CN114075799A - Heat-resistant compressed paper, preparation method thereof and battery module - Google Patents
Heat-resistant compressed paper, preparation method thereof and battery module Download PDFInfo
- Publication number
- CN114075799A CN114075799A CN202110804610.7A CN202110804610A CN114075799A CN 114075799 A CN114075799 A CN 114075799A CN 202110804610 A CN202110804610 A CN 202110804610A CN 114075799 A CN114075799 A CN 114075799A
- Authority
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- Prior art keywords
- aerogel
- heat
- paper
- resistant
- fiber
- Prior art date
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- Granted
Links
- 238000002360 preparation method Methods 0.000 title abstract description 17
- 239000004964 aerogel Substances 0.000 claims abstract description 159
- 239000012784 inorganic fiber Substances 0.000 claims abstract description 47
- 230000006835 compression Effects 0.000 claims abstract description 38
- 238000007906 compression Methods 0.000 claims abstract description 38
- 239000011230 binding agent Substances 0.000 claims abstract description 24
- 239000000945 filler Substances 0.000 claims abstract description 24
- 239000000835 fiber Substances 0.000 claims description 72
- 239000002002 slurry Substances 0.000 claims description 62
- 239000000203 mixture Substances 0.000 claims description 51
- 239000000843 powder Substances 0.000 claims description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 41
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 38
- 238000003756 stirring Methods 0.000 claims description 30
- 239000000919 ceramic Substances 0.000 claims description 28
- 239000003795 chemical substances by application Substances 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 26
- 239000002270 dispersing agent Substances 0.000 claims description 22
- 239000002245 particle Substances 0.000 claims description 22
- 239000000080 wetting agent Substances 0.000 claims description 22
- 230000004048 modification Effects 0.000 claims description 19
- 238000012986 modification Methods 0.000 claims description 19
- 239000012744 reinforcing agent Substances 0.000 claims description 19
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 17
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 17
- 239000003063 flame retardant Substances 0.000 claims description 15
- 238000000227 grinding Methods 0.000 claims description 15
- 229920000570 polyether Polymers 0.000 claims description 15
- 239000002518 antifoaming agent Substances 0.000 claims description 14
- 239000010453 quartz Substances 0.000 claims description 14
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 13
- 239000008394 flocculating agent Substances 0.000 claims description 13
- -1 amine salts Chemical class 0.000 claims description 12
- 239000002904 solvent Substances 0.000 claims description 12
- 238000004537 pulping Methods 0.000 claims description 11
- 239000003365 glass fiber Substances 0.000 claims description 9
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 8
- 125000002091 cationic group Chemical group 0.000 claims description 7
- 229920001296 polysiloxane Polymers 0.000 claims description 7
- 239000004698 Polyethylene Substances 0.000 claims description 5
- 229920000573 polyethylene Polymers 0.000 claims description 5
- 230000002209 hydrophobic effect Effects 0.000 claims description 4
- 239000005995 Aluminium silicate Substances 0.000 claims description 3
- 235000012211 aluminium silicate Nutrition 0.000 claims description 3
- 239000000440 bentonite Substances 0.000 claims description 3
- 229910000278 bentonite Inorganic materials 0.000 claims description 3
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 3
- 150000007942 carboxylates Chemical class 0.000 claims description 3
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 3
- 150000003871 sulfonates Chemical class 0.000 claims description 3
- 150000003467 sulfuric acid derivatives Chemical class 0.000 claims description 3
- 239000002202 Polyethylene glycol Substances 0.000 claims description 2
- 239000004743 Polypropylene Substances 0.000 claims description 2
- 239000004793 Polystyrene Substances 0.000 claims description 2
- 125000000129 anionic group Chemical group 0.000 claims description 2
- 239000012752 auxiliary agent Substances 0.000 claims description 2
- 229920001223 polyethylene glycol Polymers 0.000 claims description 2
- 229920005862 polyol Polymers 0.000 claims description 2
- 150000003077 polyols Chemical class 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 229920002223 polystyrene Polymers 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 229920002401 polyacrylamide Polymers 0.000 description 24
- 239000002994 raw material Substances 0.000 description 15
- 239000004816 latex Substances 0.000 description 14
- 229920000126 latex Polymers 0.000 description 14
- 229920003023 plastic Polymers 0.000 description 12
- 239000004033 plastic Substances 0.000 description 12
- 239000004721 Polyphenylene oxide Substances 0.000 description 11
- 238000001035 drying Methods 0.000 description 10
- 229920000742 Cotton Polymers 0.000 description 9
- 239000013530 defoamer Substances 0.000 description 9
- 239000000377 silicon dioxide Substances 0.000 description 9
- 239000007787 solid Substances 0.000 description 9
- 108010010803 Gelatin Proteins 0.000 description 7
- 238000010009 beating Methods 0.000 description 7
- 229910052681 coesite Inorganic materials 0.000 description 7
- 229910052906 cristobalite Inorganic materials 0.000 description 7
- 229920000159 gelatin Polymers 0.000 description 7
- 239000008273 gelatin Substances 0.000 description 7
- 235000019322 gelatine Nutrition 0.000 description 7
- 235000011852 gelatine desserts Nutrition 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000005096 rolling process Methods 0.000 description 7
- 238000007493 shaping process Methods 0.000 description 7
- 229910052682 stishovite Inorganic materials 0.000 description 7
- 229910052905 tridymite Inorganic materials 0.000 description 7
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 6
- 239000005350 fused silica glass Substances 0.000 description 6
- 239000006072 paste Substances 0.000 description 6
- 239000004576 sand Substances 0.000 description 6
- 238000005303 weighing Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 4
- 239000004952 Polyamide Substances 0.000 description 4
- 239000003623 enhancer Substances 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229920002647 polyamide Polymers 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 229920002472 Starch Polymers 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 239000008107 starch Substances 0.000 description 3
- 235000019698 starch Nutrition 0.000 description 3
- 239000012258 stirred mixture Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- BTRWELPXUDWAGW-UHFFFAOYSA-N 2,4,7,9-tetramethyldecane-4,7-diol Chemical compound CC(C)CC(C)(O)CCC(C)(O)CC(C)C BTRWELPXUDWAGW-UHFFFAOYSA-N 0.000 description 2
- 239000004967 Metal oxide aerogel Substances 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- 239000004965 Silica aerogel Substances 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 230000004075 alteration Effects 0.000 description 2
- 238000012512 characterization method Methods 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- NOLXQSVNNIIHMV-UHFFFAOYSA-L disodium;2,2-diethyl-3-hexyl-3-sulfobutanedioate Chemical compound [Na+].[Na+].CCCCCCC(C([O-])=O)(S(O)(=O)=O)C(CC)(CC)C([O-])=O NOLXQSVNNIIHMV-UHFFFAOYSA-L 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 229920001817 Agar Polymers 0.000 description 1
- 235000002568 Capsicum frutescens Nutrition 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- 229920000084 Gum arabic Polymers 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 229920000881 Modified starch Polymers 0.000 description 1
- 239000004368 Modified starch Substances 0.000 description 1
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 1
- 241000978776 Senegalia senegal Species 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 239000000205 acacia gum Substances 0.000 description 1
- 235000010489 acacia gum Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 239000008272 agar Substances 0.000 description 1
- 235000010419 agar Nutrition 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- GZCGUPFRVQAUEE-SLPGGIOYSA-N aldehydo-D-glucose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O GZCGUPFRVQAUEE-SLPGGIOYSA-N 0.000 description 1
- 239000001164 aluminium sulphate Substances 0.000 description 1
- 235000011128 aluminium sulphate Nutrition 0.000 description 1
- 229910000410 antimony oxide Inorganic materials 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000357 carcinogen Toxicity 0.000 description 1
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- BUACSMWVFUNQET-UHFFFAOYSA-H dialuminum;trisulfate;hydrate Chemical compound O.[Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O BUACSMWVFUNQET-UHFFFAOYSA-H 0.000 description 1
- 150000002009 diols Chemical class 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 150000002191 fatty alcohols Chemical class 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000017 hydrogel Substances 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910000000 metal hydroxide Inorganic materials 0.000 description 1
- 150000004692 metal hydroxides Chemical class 0.000 description 1
- 235000019426 modified starch Nutrition 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical compound [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 239000013055 pulp slurry Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 239000011115 styrene butadiene Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 238000000352 supercritical drying Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F13/00—Making discontinuous sheets of paper, pulpboard or cardboard, or of wet web, for fibreboard production
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/36—Inorganic fibres or flakes
- D21H13/38—Inorganic fibres or flakes siliceous
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/68—Water-insoluble compounds, e.g. fillers, pigments siliceous, e.g. clays
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/69—Water-insoluble compounds, e.g. fillers, pigments modified, e.g. by association with other compositions prior to incorporation in the pulp or paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/71—Mixtures of material ; Pulp or paper comprising several different materials not incorporated by special processes
- D21H17/74—Mixtures of material ; Pulp or paper comprising several different materials not incorporated by special processes of organic and inorganic material
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/06—Paper forming aids
- D21H21/08—Dispersing agents for fibres
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/658—Means for temperature control structurally associated with the cells by thermal insulation or shielding
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Paper (AREA)
Abstract
The invention provides heat-resistant compressed paper, a preparation method thereof and a battery module. The heat-resistant compressed paper comprises 1-40 wt% of aerogel, 25-80 wt% of inorganic fiber, 1-50 wt% of filler and 2-20 wt% of organic binder. The heat-resistant compression paper according to the present invention has high compression properties or resilience at a small thickness, low thermal conductivity, and has the advantage of easy formation.
Description
Technical Field
The invention belongs to the field of materials, and particularly relates to heat-resistant compressed paper, a preparation method thereof and a battery module comprising the heat-resistant compressed paper.
Background
The ceramic fiber paper is made from ceramic fiber as raw material by wet paper-making process including pulping, deslagging, pulp mixing, paper making, drying, reeling, rewinding and cutting, packaging and other procedures, and has the advantages of flexibility, easy reeling, easy cutting, low heat conductivity coefficient and the like, so that the ceramic fiber paper is widely applied in the field of industry and daily necessities. Although the ceramic fiber paper has a low thermal conductivity (the thermal conductivity at normal temperature is 0.035W/m.K), the common ceramic fiber paper is difficult to satisfy the use conditions in the application fields with higher requirements for heat insulation.
The aerogel powder has abundant nano-pores, so that the aerogel powder has super heat insulation performance, such as SiO at normal temperature and pressure2Total thermal conductivity of aerogel powder<0.015W/m.K, total thermal conductivity of bulk<0.013W/m.K, a thermal stability up to 600 ℃, and super hydrophobicity when used below 300 ℃. Generally, pure aerogel materials have the problem of being lightweight and brittle, and are difficult to apply directly as insulation products in industry. The surface of common commercial aerogel powder has a hydrophobic structure, and the common commercial aerogel powder floats on the surface when placed in an aqueous matrix, so that the common aerogel powder cannot be dispersed in ceramic fiber aqueous slurry, and cannot be directly used as a raw material in a wet forming process of ceramic fiber paper.
In the market, an impregnation method is generally adopted, an aerogel sol precursor is impregnated into ceramic fiber felt/paper, and after gelation and aging, a supercritical drying process is finally used to obtain a fiber felt/paper product; or preparing wet fiber paper blank, then applying the aerogel emulsion into the fiber paper by a surface sizing method and drying. The fiber-aerogel paper prepared by the method has heat resistance and compression performance which cannot meet the application field with high requirements, and the aerosol is easy to fall off from the surface of the fiber to influence the product performance.
Disclosure of Invention
The object of the present invention is to provide a heat-resistant compression paper which provides good compression properties or resilience and thermal conductivity and has easy formability by including hydrophilic-modified aerogel and inorganic fibers.
According to one aspect of the present invention, there is provided heat-resistant compressed paper comprising the following composition based on the total weight of the heat-resistant compressed paper: 1-40 wt% of aerogel, 25-80 wt% of inorganic fiber, 1-50 wt% of filler and 2-20 wt% of organic binder. Wherein the inorganic fiber is selected from one or more of ceramic fiber, glass fiber and alumina fiber.
Preferably, the heat-resistant compressed paper has a thickness of 0.5 to 20 mm.
Preferably, the composition is configured to have a deformation ratio of 40% -70% at a pressure of 2MPa, as determined according to ASTM C165-2012.
Preferably, the composition of the heat-resistant compressed paper comprises: 1-40 wt% aerogel; 25-60 wt% inorganic fiber; 20-50 wt% of a filler; and 2-15 wt% of an organic binder.
Preferably, the composition is configured to have a deformation ratio of 35% -60% at a pressure of 1MPa, as determined according to ASTM C165-2012.
Preferably, the composition of the heat-resistant compressed paper comprises: 1-40 wt% of aerogel, 25-70 wt% of inorganic fiber and 10-40 wt% of filler; and 2-15 wt% of an organic binder.
Preferably, the composition is configured to have a compression set of 2% -10% as determined according to ASTM D3574-2017.
Preferably, the composition of the heat-resistant compressed paper comprises: 1-8 wt% of aerogel, 25-80 wt% of inorganic fiber, 1-20 wt% of filler and 5-20 wt% of organic binder.
Preferably, the composition is configured to have a deformation ratio of 60% -80% at a pressure of 350kPa, determined according to ASTM C165-2012.
Preferably, the composition of the heat-resistant compressed paper comprises: 1-10 wt% of aerogel, 25-80 wt% of inorganic fiber, 1-20 wt% of filler and 2-20 wt% of organic binder.
Preferably, the weight ratio of inorganic fibers to aerogel is at least 1.5: 1.
Preferably, the weight ratio of inorganic fibers to aerogel is at least 2.0: 1.
Preferably, the filler is selected from the group consisting of quartz powder, alumina powder, kaolin, white mud and bentonite.
Preferably, one or more of the following components are further included based on the total weight of the heat-resistant compressed paper: 0.3-2% of wet strength agent, 0.02-0.9% of defoaming agent, 0-3% of flame retardant, 0.5-2.5% of film forming agent, 4.5-15% of organic binder, 0.45-2% of reinforcing agent and 0.02-1% of flocculating agent.
According to another aspect of the present invention, there is provided a method of preparing heat-resistant compressed paper, comprising:
carrying out hydrophilic modification on the hydrophobic aerogel by using a wetting agent and a dispersing agent to obtain hydrophilic modified aerogel;
pulping inorganic fibers in a first solvent to obtain inorganic fiber pulp;
adding the hydrophilic modified aerogel into the inorganic fiber slurry to obtain inorganic fiber-aerogel slurry;
forming the inorganic fiber-aerogel slurry into heat-resistant compressed paper.
Preferably, the hydrophilic modification step comprises:
adding the wetting agent and the dispersing agent into a second solvent, and carrying out first stirring to obtain a first mixture;
adding aerogel powder into the first mixture, and carrying out second stirring to obtain a second mixture;
and grinding the second mixture to obtain the hydrophilic modified aerogel slurry.
Preferably, the wetting agent comprises one or more of a cationic wetting agent and a non-ionic wetting agent, preferably selected from the group consisting of carboxylates, sulfates, sulfonates, silicone polyethers, and polyols (e.g., glycols);
the dispersant comprises one or more of anionic dispersant and nonionic dispersant, preferably selected from the group consisting of amine salt, and organic polymer dispersant (such as polyethylene, polypropylene, polystyrene or other polymer modified homo-or co-polymerized oligomer, polyethylene glycol, polyvinyl alcohol, etc.); and is
The first solvent and the second solvent are independently water.
Preferably, the weight percentage of the aerogel is 1.9-9.1%, the weight percentage of the wetting agent is 0.2-3.8%, and the weight percentage of the dispersing agent is 0.2-1.9%, based on the total weight of the raw materials of the hydrophilic modification step.
Preferably, the average particle size of the aerogel is 30 to 70 μm.
Preferably, the method further comprises:
an additive selected from the group consisting of fillers, organic binders, and optionally one or more selected from the group consisting of wet strength agents, defoamers, film formers, reinforcing agents, flame retardants, and flocculants is added to the ceramic fiber slurry.
According to yet another aspect of the present invention, there is provided a fibrous paper having both thermal insulation properties and compression performance requirements. The fiber paper can be used as a battery core required by the fireproof performance of batteries in the electric automobile industry or a heat-insulating compression material of a battery module.
The heat-resistant compressed paper according to the present invention can be formed in one step by a conventional wet papermaking process by uniformly dispersing aerogel in inorganic fiber slurry, and has improved resilience, hardness and compression properties while having low thermal conductivity.
Detailed Description
Technical features, objects and advantages of the present invention will be more clearly understood and appreciated by those skilled in the art. It should be understood that the following detailed description is merely exemplary, and the technical solution of the present invention is not limited to the specific embodiments listed below.
Heat-resistant compressed paper
The invention provides heat-resistant compressed paper which comprises aerogel, inorganic fiber, filler and organic binder.
(I) aerogels
Aerogels useful in the present invention can be silica aerogels and/or non-silica metal oxide aerogels. Wherein the non-silica metal oxide aerogel can be one or more of alumina aerogel, zirconia aerogel, titania aerogel and vanadia aerogel.
Preferably, the present invention employs silica aerogel. SiO 22Aerogel powder is a common aerogel material in the market, has an average particle size of usually 100-1000 μm, and has complete hydrophobicity.
Thus, the invention uses aerogel powders, preferably SiO, having a surface which has been hydrophilically treated2The aerogel powder enables the surface of the aerogel to have hydrophilicity and hydrophobicity simultaneously. Therefore, aerogel powder having hydrophilicity and hydrophobicity can form uniform slurry with inorganic fibers such as ceramic fibers in the process of preparing slurry for heat-resistant compression paper. In the slurry for heat-resistant compressed paper, the average particle diameter of the hydrophilic-modified aerogel particles is 30 to 70 μm. The aerogel surface, which has hydrophilicity and hydrophobicity, is again converted to complete hydrophobicity during drying in the wet-forming step of the heat-resistant compressed paper.
The content of the aerogel may be 1 to 40% by weight, preferably 5 to 35% by weight, more preferably 8 to 30% by weight, for example, 12%, 15%, 18%, 20%, 25%, 28% by weight, based on the total mass of the heat-resistant compressed paper.
(II) inorganic fiber
The inorganic fiber of the present invention may be selected from inorganic fibers having excellent heat resistance, for example, one or more of ceramic fibers, glass fibers and alumina fibers may be selected, and ceramic fibers are preferred. The present invention can use ceramic fiber with excellent heat resistance, such as ceramic fiber with diameter of 2-3 μm, preferably low biological durable degradable super cotton fiber produced by Morgan company, and the main chemical component comprises SiO2CaO, MgO and the like, the classification temperature is 1200-1300 ℃, and the NOTE Q standard of 1272/2008 specified by European Union does not belong to any carcinogen classification, and has good classificationAnd (4) safety.
The content of the inorganic fiber may be 25 to 80 wt%, preferably 30 to 75 wt%, more preferably 35 to 70 wt%, for example, may be 67 wt%, 60 wt%, 56 wt%, 53 wt%, 48 wt%, 42 wt%, 37 wt%, based on the total mass of the heat-resistant compressed paper.
Preferably, the total content of aerogel and inorganic fibers may be 40-80%, preferably 45-70%, such as 56%, 63%, 67%, etc. Preferably, the mass ratio of inorganic fibers to aerogel can be 1 (0.1-0.7), such as 1:0.3, 1:0.5, and the like.
(III) Filler
Fillers useful in the present invention include one or more of quartz powder, alumina powder, kaolin, white mud, and bentonite, preferably quartz powder. In inorganic fiber slurries, the addition of fillers (e.g., quartz powder) can increase the density, stiffness, and strength of the fibrous paper.
The content of the filler may be 1 to 50 wt%, preferably 5 to 46 wt%, more preferably 8 to 37 wt%, for example, may be 14 wt%, 19 wt%, 24 wt%, 29 wt%, 32 wt%, based on the total mass of the heat-resistant compressed paper.
(IV) organic Binder
The organic binder which can be used in the present invention may include one or more of a styrene-butadiene polymer, polyacrylate, polyvinyl acetate, polyurethane, and ethylene-vinyl acetate copolymer, and preferably has a glass transition temperature of-10 to 10 ℃.
The resilience and flexibility of the fiber paper can be changed by selecting different types of organic binders and changing the addition amount of the organic binders.
The content of the organic binder may be 2 to 20 wt%, preferably 5 to 17 wt%, more preferably 6 to 14 wt%, for example, may be 9 wt%, 11 wt%, 13 wt%, based on the total mass of the heat-resistant compressed paper.
In the fiber paper of the present invention, the aerogel is subjected to surface hydrophilic treatment so that aerogel particles can be uniformly dispersed in the inorganic fiber slurry. But the aerogel powder has the characteristics of low density and large specific surface area; the addition of the aerogel powder has adverse effect on the action of the organic binder, and reduces the bonding strength between the organic binder and the inorganic fiber, so that the fiber paper obtained by wet forming has low density, low strength and poor flexibility. Therefore, in the preparation of fiber pulp slurry, some additives are usually additionally used to compensate the adverse effect of aerogel powder.
The filler (such as quartz powder) has high density, hard texture and good dispersion performance in an aqueous matrix, and the filler added into the fiber paper pulp can effectively improve the density of the fiber paper, enhance the hardness and strength of the fiber paper and improve the compression performance of the fiber paper. The addition amount of the filler can be adjusted according to the performance requirement of practical application, and the density of the fiber paper can meet the conventional requirement by adding a small amount of filler; the addition of a large amount of the additive can effectively improve the density of the fiber paper, so that the fiber paper has high hardness and compression performance, and the requirement of special application occasions with high requirement on the compression performance of the fiber paper is met. For example, certain applications require products with less thickness deformation under greater stress, and require stiffer fiber paper to meet the requirements.
(V) other auxiliaries
According to particular embodiments, the heat resistant compressed paper of the present invention may further include one or more of a wet strength agent, a defoamer, a film former, a reinforcing agent, a flocculant.
According to a particular embodiment, the above-mentioned wet strength agent may comprise one or more of a polyamide epichlorohydrin resin (PAE), a polyamine resin (PA), a urea-formaldehyde resin and a melamine-formaldehyde resin, preferably a polyamide epichlorohydrin resin (PAE).
The content of wet strength agent may be 0.3 to 2 wt.%, preferably 0.4 to 1.7 wt.%, for example 0.5 wt.%, 0.8 wt.%, 1.0 wt.%, 1.3 wt.%, or 1.5 wt.%, based on the total mass of the heat-resistant compressed paper.
The antifoaming agent used in the present invention may include one or more of polyether-based antifoaming agent, silicone-based antifoaming agent, polyether-modified silicon-based antifoaming agent, and condensate of fatty alcohol with ethylene oxide or propylene oxide, preferably polyether-modified silicon-based antifoaming agent.
The content of the defoaming agent may be 0.02 to 0.9 wt%, preferably 0.04 to 0.7 wt%, for example 0.06 to 0.5 wt%, or 0.09 to 0.3 wt%, and further for example 0.15 wt%, based on the total mass of the heat-resistant compressed paper.
The film forming agent used in the present invention may include one or more of gelatin, gum arabic, agar, starch, and polyvinyl alcohol, preferably polyvinyl alcohol. The addition of the film forming agent in the fiber paper can help to improve the flexibility of the fiber paper. For example, the polyvinyl alcohol film forming agent has the characteristic of easy film forming, has good adhesive strength and tensile strength, and the toughness of the fiber paper can be effectively increased by increasing the using amount of the film forming agent.
The content of the film-forming agent may be 0.5 to 2.5 wt%, preferably 0.8 to 2.1 wt%, for example 1.0 wt%, 1.4 wt%, 1.7 wt%, 1.9 wt%, based on the total mass of the heat-resistant compressed paper.
The reinforcing agent used in the present invention may comprise one or more of modified starch, polyacrylamide and polyethylene, preferably polyacrylamide. By adding the reinforcing agent, the strength and the compression performance of the fiber paper can be improved. The content of the reinforcing agent may be 0.45 to 2% by weight, preferably 0.6 to 1.8% by weight, for example 1.2% by weight, 1.6% by weight, based on the total mass of the heat-resistant compression paper.
The flocculating agent employed in the present invention may comprise polyacrylamide and/or aluminium sulphate. The content of the flocculating agent may be 0.02 to 1 wt%, preferably 0.06 to 0.09 wt%, for example 0.07 wt%, 0.08 wt%, based on the total mass of the heat-resistant compressed paper.
In the application requiring the flame retardance of the fiber paper, the flame retardant can be added into the fiber paper pulp so as to meet the application field with the flame retardance requirement. The flame retardant may comprise one or more of a phosphorus based flame retardant, a boride flame retardant, an antimony oxide based flame retardant, a metal hydroxide flame retardant. The content of the flame retardant may be 0.02 to 1 wt%, preferably 0.06 to 0.09 wt%, for example 0.07 wt%, 0.08 wt%, based on the total mass of the heat-resistant compression paper.
The heat-resistant compressed paper according to the present invention generally has a thickness of 0.5 to 20 mm.
According to an embodiment, the composition of the heat resistant compression paper may be configured to have a deformation ratio of 40% -70% at a pressure of 2MPa, as determined according to ASTM C165-2012.
According to another embodiment, the composition of the heat resistant compression paper may be configured to have a deformation ratio of 35% to 60% at a pressure of 1MPa, as determined according to ASTM C165-2012.
According to yet another embodiment, the composition of the heat resistant compression paper may be configured to have a compression set of 2% to 10% as determined according to ASTM D3574-2017.
According to yet another embodiment, the composition of the heat resistant compression paper may be configured to have a deformation ratio of 60% -80% at a pressure of 350kPa, determined according to ASTM C165-2012.
The heat-resistant compressed paper according to the present invention has a thermal conductivity of 0.03 to 0.06W/m.K at 300 ℃ as measured according to ASTM C177.
According to an embodiment, the composition of the heat resistant compression paper may be configured to have a deformation ratio of 15 to 25% at a pressure of 14kPa, determined according to ASTM C165-2012.
Second, preparation method of heat-resistant compressed paper
The present invention also provides a method of preparing heat-resistant compressed paper, comprising: the method comprises the steps of aerogel hydrophilic modification, pulping and wet forming.
(I) hydrophilic modification of aerogels
Specifically, the aerogel hydrophilic modification step comprises the following steps:
adding a wetting agent and a dispersing agent into a solvent, and stirring to obtain a first mixture;
adding aerogel powder into the first mixture, and carrying out second stirring to obtain a second mixture;
and grinding the second mixture to obtain the hydrophilic modified aerogel slurry.
Wetting agents useful in the above-described methods of the present invention include one or more of carboxylates, sulfate salts, sulfonates, and silicone polyethers. The wetting agent modifies the hydrophobic structure on the surface of the aerogel powder, so that the surface of the aerogel powder has a hydrophilic structure, and the aerogel powder is favorably dispersed in an aqueous matrix. The dispersants of the present invention may include amine salts and/or silicone polyethers. The above solvent may be water.
The surface of the aerogel subjected to hydrophilic modification has hydrophilicity, and meanwhile, partial hydrophobicity is also reserved. The degree of hydrophilic modification of the aerogel surface is measured by the following procedure: the wetted aerogel can be uniformly dispersed in water without floating on the water surface under agitation, or left to stand for 5 minutes without delamination.
Excessive manifestation of hydrophilic treatment: the aerogel powder settled after standing for 30 s.
Based on the total weight of the hydrophilic treatment feed liquid, the weight percentage of the aerogel is 1.9-9.1%, the weight percentage of the wetting agent is 0.2-3.8%, and the weight percentage of the dispersing agent is 0.2-1.9%.
The hydrogel particles in the hydrophilically modified aerogel slurry have an average particle size of 30 to 70 μm.
(II) preparation of pulp for heat-resistant compressed paper
Pulping inorganic fibers in a solvent to obtain inorganic fiber pulp; and adding the hydrophilic modified aerogel into the inorganic fiber slurry to obtain the inorganic fiber-aerogel composition. Wherein the amount of the inorganic fiber in the inorganic fiber slurry is 0.1-1% of the weight of the solvent. The pulping time can be 5-6 min. The inorganic fibers herein are as defined above.
The addition of the auxiliary agent to the inorganic fiber slurry in the pulping step may be made according to the performance requirements of the heat-resistant compressed paper. For example, fillers, wet strength agents, defoamers, hydrophilically modified aerogels, film formers, organic binders, reinforcing agents and flocculants can be added to the inorganic fiber slurry as performance requirements dictate, preferably with stirring one by one, in sequence.
In particular, film formers generally require premature dissolution by heating, for example to a temperature of 80-90 ℃. Alternatively, the flocculant may be dissolved in advance.
(III) Wet Molding
The wet forming step may be carried out by a conventional papermaking forming process, and may include, for example:
pouring the inorganic fiber-aerogel composition into a paper sheet former, stirring to uniformly disperse the slurry and eliminate bubbles on the surface of the slurry;
dehydrating the forming pool, vacuumizing after water flowing, and removing water absorbed in the wet paper blank;
taking down the forming net, taking the wet paper blank off the forming net, and performing rolling shaping;
and (5) drying.
The components used in the preparation and their proportions are as defined above.
According to the invention, the surface of the aerogel powder is treated to make the aerogel powder have a hydrophilic structure, and the composite material of inorganic fibers and aerogel, namely heat-resistant compression paper, is formed by a fiber paper wet forming process, and has the characteristics of high compression performance, flexibility and resilience, low heat conductivity coefficient and easiness in forming.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments.
The methods used in the following examples are conventional methods unless otherwise specified, and the reagents used are commercially available reagents unless otherwise specified.
Examples
Example 1
Hydrophilic modification of aerogels
40g (0.47%) of acetylenic diol wetting agent A and 40g (0.47%) of polyethylene dispersant B were placed in 8L of water and stirred for 10 minutes using a mechanical stirrer; 400g (4.72%) of SiO with a particle size of 0.1-0.7 mm is taken2Adding aerogel powder IC 3110 into the mixture, and stirring for 10 minutes at 2000r/min by a high-speed stirrer; transferring the dispersed slurry into a charging barrel of a sand mill, and grinding for 45 minutes at a rotating speed of 3000 r/min; grinding the SiO2Pouring the aerogel slurry into a plastic bucket; and standing the slurry for one night, and taking out the upper-layer paste in the plastic barrel to obtain the hydrophilic modified aerogel paste. According to the method of a laser particle sizer, the average particle size of aerogel particles in the aerogel paste is measured to be 40-60 micrometers.
(II) preparation of ordinary aerogel fiber paper
Weighing 20g (12.60%) of fused silica powder, 0.5g (0.31%) of PAE wet strength agent, 0.05g (0.03%) of polyether modified silicon defoamer, 2g (1.26%) of Colorado 5-88 polyvinyl alcohol, 15g (9.45%) of acrylate latex, 1g (0.63%) of polyacrylamide enhancer (Takara Chinen Kogyo technology), 0.2g (0.13%) of polyacrylamide with a molecular weight of about 1500-2000 ten thousand cations, and 20g (12.60%) of hydrophilically modified aerogel paste (calculated by solid content). Wherein, the polyvinyl alcohol and the polyacrylamide need to be heated and dissolved by water in advance;
putting 10L of water into a pulping machine, putting 100g (62.99%) of Morgan super cotton fiber into the water, and pulping for 15min to obtain ceramic fiber slurry;
putting the ceramic fiber slurry into a container, stirring by using a stirrer at the speed of 60r/min, sequentially adding quartz powder, a wet strength agent, a defoaming agent, a hydrophilic modified aerogel paste, polyvinyl alcohol, latex, a reinforcing agent and a flocculating agent, stirring for 2min after adding each raw material, and then adding the next raw material to finally obtain a ceramic fiber-aerogel composition;
pouring the stirred ceramic fiber-aerogel composition into a paper sheet former, stirring for 2min to uniformly disperse the slurry and eliminate bubbles on the surface of the slurry; dehydrating the forming pool, vacuumizing after water flowing, and removing water absorbed in the wet paper blank; taking down the forming net, taking the wet paper blank off the forming net, and performing rolling shaping; and (5) putting the paper into a microwave drying oven to dry for 15 minutes to obtain the aerogel fiber paper.
Example 2
Hydrophilic modification of aerogels
96g (1.13%) of a silicone polyether wetting agent A and 40g (0.47%) of a sodium diethylhexyl sulfosuccinate dispersant B were placed in 8L of water and stirred for 10 minutes using a mechanical stirrer; 350g (4.12%) of SiO with a particle size of 0.1-0.7 mm2Aerogel powder (Guizhou Wujiang electromechanical products) is added into the mixture, and stirred for 40 minutes at 2000r/min by a high-speed stirrer; transferring the dispersed slurry into a charging barrel of a sand mill, and grinding for 10 minutes at a rotating speed of 3000 r/min; grinding the SiO2Pouring the aerogel slurry into a plastic bucket; and standing the slurry for one night, and taking out the upper-layer paste in the plastic barrel to obtain the hydrophilic modified aerogel paste. According to the method of a laser particle sizer, the average particle size of aerogel particles in the aerogel paste is measured to be 35-50 microns。
(II) preparation of ordinary aerogel fiber paper
Weighing 10g (6.55%) of fused silica powder, 0.5g (0.33%) of PAE wet strength agent, 0.05g (0.03%) of polyether modified silicon defoamer, 1g (0.65%) of gelatin, 15g (9.82%) of acrylate latex, 1g (0.65%) of polyacrylamide enhancer (Takara Chili Engineers technology), 0.15g (0.1%) of cationic polyacrylamide having a molecular weight of about 1500-2000 ten thousand, and 25g (16.37%) of hydrophilically modified aerogel paste (calculated as solid content). Wherein, the gelatin and the polyacrylamide need to be heated and dissolved by water in advance;
putting 10L of water into a pulping machine, putting 100g (65.49%) of Morgan super cotton fiber into the water, and pulping for 15min to obtain ceramic fiber slurry;
putting the ceramic fiber slurry into a container, stirring by using a stirrer at the speed of 60r/min, sequentially adding quartz powder, a wet strength agent, a defoaming agent, a hydrophilic modified aerogel paste, gelatin, latex, a reinforcing agent and a flocculating agent, stirring for 2min after adding each raw material, and then adding the next raw material to finally obtain a ceramic fiber-aerogel composition;
pouring the stirred ceramic fiber-aerogel composition into a paper sheet former, stirring for 2min to uniformly disperse the slurry and eliminate bubbles on the surface of the slurry; dehydrating the forming pool, vacuumizing after water flowing, and removing water absorbed in the wet paper blank; taking down the forming net, taking the wet paper blank off the forming net, and performing rolling shaping; and (5) putting the paper into a microwave drying oven to dry for 15 minutes to obtain the aerogel fiber paper.
Example 3 preparation of aerogel fiber hardboard
Hydrophilic modification of aerogels
40g (0.47%) of thioether wetting agent A and 40g of polyethylene dispersant B were placed in 8L of water and stirred for 10 minutes using a mechanical stirrer; taking 400g of SiO with the grain diameter of 0.1-0.7 mm2Adding aerogel powder IC 3110 into the mixture, and stirring for 10 minutes at 2000r/min by a high-speed stirrer; transferring the dispersed slurry into a charging barrel of a sand mill, and grinding for 45 minutes at a rotating speed of 3000 r/min; grinding the SiO2Pouring aerogel slurryIn a plastic bucket; standing the slurry overnight, and taking out the upper layer paste in the plastic barrel.
(II) preparation of aerogel fiber hard paper
Weighing 40g (24.88%) of 300 mesh fused silica powder, 0.5g (0.31%) of PAE wet strength agent, 0.05g (0.03%) of polyether modified silicon defoamer, 2g (1.24%) of Colorado 5-88 polyvinyl alcohol, 15g (9.33%) of acrylate latex, 1g (0.62%) of polyacrylamide reinforcing agent, 0.2g (0.12%) of cationic polyacrylamide having a molecular weight of about 1500-2000 ten thousand, and 2g (1.24%) of aerogel paste (calculated as solid content); polyvinyl alcohol and polyacrylamide need to be heated and dissolved in advance.
Adding 10L water into a beater, adding 100g (62.99%, water solid content about 1.0%) of Morgan super cotton fiber into water, and beating for 60 min; after the beating is finished, putting the fiber slurry into a container, stirring by using a stirrer, sequentially adding quartz powder, a wet strength agent, a defoaming agent, an aerogel paste, polyvinyl alcohol, latex, a reinforcing agent and a flocculating agent at the speed of 60r/min, stirring for 2min after adding each raw material, and then adding the next raw material;
pouring the stirred mixture into a paper sheet former, and stirring for 2min to uniformly disperse the slurry and eliminate bubbles on the surface of the slurry; dehydrating the forming pool, vacuumizing after water flowing, and removing water absorbed in the wet paper blank; taking down the forming net, taking the wet paper blank off the forming net, and performing rolling shaping; and (5) putting the paper into a microwave drying oven to dry for 15 minutes to obtain the aerogel fiber paper.
Example 4 preparation of aerogel fiber elastic paper
Hydrophilic modification of aerogels
40g (0.47%) of 2,4,7, 9-tetramethyl-4, 7-decanediol wetting agent A and 40g (0.47%) of ethoxylated alcohol dispersant B were placed in 8L of water and stirred for 10 minutes using a mechanical stirrer; 400g (4.72%) of SiO with a particle size of 0.1-0.7 mm is taken2Adding aerogel powder IC 3110 into the mixture, and stirring for 10 minutes at 2000r/min by a high-speed stirrer; transferring the dispersed slurry into a charging barrel of a sand mill, and grinding for 45 minutes at a rotating speed of 3000 r/min; grinding the SiO2Pouring the aerogel slurry into a plastic bucket; mixing the slurryStanding overnight, and taking out the upper layer paste in the plastic barrel.
(II) preparation of aerogel fiber elastic paper
Weighing 2g (1.52%) of fused silica powder, 0.5g (0.38%) of PAE wet strength agent, 0.05g (0.04%) of polyether modified silicon defoamer, 1g (0.76%) of Colorado 5-88 polyvinyl alcohol, 20g (15.19%) of acrylate latex, 1g (0.76%) of polyacrylamide reinforcing agent, 0.1g (0.08%) of cationic polyacrylamide with a molecular weight of about 1500-2000 ten thousand, 5g (3.80%) of aerogel paste (calculated according to solid content) and 2g of phosphorus flame retardant; polyvinyl alcohol and polyacrylamide need to be heated and dissolved in advance.
Putting 10L of water into a beater, putting 100g (75.96%) of Morgan super cotton fiber into the water, and beating for 15 min; after the beating is finished, putting the fiber slurry into a container, stirring by using a stirrer, sequentially adding quartz powder, a wet strength agent, a defoaming agent, a flame retardant, an aerogel paste, polyvinyl alcohol, latex, a reinforcing agent and a flocculating agent at the speed of 60r/min, stirring for 2min after adding one raw material every time, and then adding the next raw material;
pouring the stirred mixture into a paper sheet former, and stirring for 2min to uniformly disperse the slurry and eliminate bubbles on the surface of the slurry; dehydrating the forming pool, vacuumizing after water flowing, and removing water absorbed in the wet paper blank; taking down the forming net, taking the wet paper blank off the forming net, and performing rolling shaping; and (5) putting the paper into a microwave drying oven to dry for 15 minutes to obtain the aerogel fiber paper.
Example 5 preparation of aerogel fiberglass elastic paper
Hydrophilic modification of aerogels
40g (0.47%) of 2,4,7, 9-tetramethyl-4, 7-decanediol wetting agent A and 40g (0.47%) of ethoxylated alcohol dispersant B were placed in 8L of water and stirred for 10 minutes using a mechanical stirrer; 400g (4.72%) of SiO with a particle size of 0.1-0.7 mm is taken2Adding aerogel powder IC 3110 into the mixture, and stirring for 10 minutes at 2000r/min by a high-speed stirrer; transferring the dispersed slurry into a charging barrel of a sand mill, and grinding for 45 minutes at a rotating speed of 3000 r/min; grinding the SiO2Pouring the aerogel slurry into a plastic bucket; the slurry was allowed to stand overnight,and taking out the upper layer paste in the plastic barrel.
(II) preparation of aerogel fiber elastic paper
Weighing 2g (1.52%) of fused silica powder, 0.5g (0.38%) of PAE wet strength agent, 0.05g (0.04%) of polyether modified silicon defoamer, 1g (0.76%) of Colorado 5-88 polyvinyl alcohol, 20g (15.19%) of acrylate latex, 1g (0.76%) of polyacrylamide reinforcing agent, 0.1g (0.08%) of cationic polyacrylamide with a molecular weight of about 1500-2000 ten thousand, 5g (3.80%) of aerogel paste (calculated according to solid content) and 2g of phosphorus flame retardant; polyvinyl alcohol and polyacrylamide need to be heated and dissolved in advance.
Putting 10L of water into a beater, putting 100g (75.96%) of glass fiber into the water, and beating for 15 min; after the beating is finished, putting the fiber slurry into a container, stirring by using a stirrer, sequentially adding quartz powder, a wet strength agent, a defoaming agent, a flame retardant, an aerogel paste, polyvinyl alcohol, latex, a reinforcing agent and a flocculating agent at the speed of 60r/min, stirring for 2min after adding one raw material every time, and then adding the next raw material;
pouring the stirred mixture into a paper sheet former, and stirring for 2min to uniformly disperse the slurry and eliminate bubbles on the surface of the slurry; dehydrating the forming pool, vacuumizing after water flowing, and removing water absorbed in the wet paper blank; taking down the forming net, taking the wet paper blank off the forming net, and performing rolling shaping; and (5) putting the glass fiber paper into a microwave drying oven to be dried for 15 minutes to obtain the aerogel glass fiber paper.
Example 6
Hydrophilic modification of aerogels
96g (1.13%) of a silicone polyether wetting agent A and 40g (0.47%) of a sodium diethylhexyl sulfosuccinate dispersant B were placed in 8L of water and stirred for 10 minutes using a mechanical stirrer; 350g (4.12%) of SiO with a particle size of 0.1-0.7 mm2Aerogel powder (Guizhou Wujiang electromechanical products) is added into the mixture, and stirred for 40 minutes at 2000r/min by a high-speed stirrer; transferring the dispersed slurry into a charging barrel of a sand mill, and grinding for 10 minutes at a rotating speed of 3000 r/min; grinding the SiO2Pouring the aerogel slurry into a plastic bucket; standing the slurry overnight, taking out the upper layer paste in the plastic barrel,a hydrophilically modified aerogel paste is obtained. According to the method of a laser particle sizer, the average particle size of aerogel particles in the aerogel paste is 35-50 microns.
(II) preparation of aerogel ceramic fiber and glass fiber mixed paper
Weighing 10g (6.55%) of fused quartz powder, 0.5g (0.33%) of PAE wet strength agent, 0.05g (0.03%) of polyether modified silicon defoamer, 1g (0.65%) of gelatin, 15g (9.82%) of acrylate latex, 1g (0.65%) of polyacrylamide reinforcing agent (Taian Chi Engineers technology), 0.15g (0.1%) of cationic polyacrylamide with the molecular weight of about 1500-2000 ten thousand and 25g (16.37%) of hydrophilic modified aerogel paste (calculated according to solid content), wherein the gelatin and the polyacrylamide need to be heated and dissolved by water in advance;
putting 10L of water into a beater, respectively putting 50g (32.75%) of Morgan super cotton fiber and 50g (32.75%) of glass fiber cotton into the water, and beating for 15min to obtain fiber slurry;
putting the fiber slurry into a container, stirring by using a stirrer at the speed of 60r/min, sequentially adding quartz powder, a wet strength agent, a defoaming agent, a hydrophilic modified aerogel paste, gelatin, latex, a reinforcing agent and a flocculating agent, stirring for 2min after adding each raw material, and then adding the next raw material to finally obtain the ceramic fiber-aerogel composition;
pouring the stirred ceramic fiber-aerogel composition into a paper sheet former, stirring for 2min to uniformly disperse the slurry and eliminate bubbles on the surface of the slurry; dehydrating the forming pool, vacuumizing after water flowing, and removing water absorbed in the wet paper blank; taking down the forming net, taking the wet paper blank off the forming net, and performing rolling shaping; and (5) putting the paper into a microwave drying oven to dry for 15 minutes to obtain the aerogel mixed fiber paper.
Example 7
Aerogel fiber paper was prepared in the same manner as in example 3, except that the following composition was used:
morgan super cotton fiber: 120g (44.21%); SiO 22Aerogel paste: 17g (aerogel paste solids content 18%) (1.13%); polyurethane latex: 26g (9.58%); modification ofPolyacrylamide enhancer (qineng chemical science and technology, tai an city): 4g (1.47%); quartz powder: 100g (36.84%); starch: 2.2g (0.81%); polyacrylamide: 0.12g (0.04%); polyamide epichlorohydrin: 2g (0.74%); polyether modified silicon defoamer: 0.12g (0.04%).
Example 8
Aerogel fiber paper was prepared in the same manner as in example 3, except that the following composition was used:
morgan super cotton fiber: 120g (34.17%); SiO 22Aerogel paste: 22g (aerogel paste solids content 18%) (1.13%); polyurethane latex: 42g (11.96%); polyacrylamide enhancer (qineng chemical science and technology, tai an city): 2.4g (0.68%); quartz powder: 160g (45.56%); starch: 3g (0.85%); polyacrylamide: 0.14g (0.04%); polyamide epichlorohydrin: 1.5g (0.43%); polyether modified silicon defoamer: 0.14g (0.04%).
Performance testing
The samples prepared in the above examples and comparative examples were tested for their performance by the following specific test methods:
1. characterization of compression Properties of aerogel hardstock
The test is characterized by the sample deformation rate mu (%) under 1MPa and 2MPa, the compression performance test standard is according to ASTM C165-2012, the sample size is 150x150mm, the sample thickness is more than 25mm (by stacking multiple fiber paper samples), the compression rate is 2mm/s, and the test takes 50N initial pressure as the starting point position.
2. Characterization method of aerogel soft paper (elastic paper): rebound resilience C (%) and compression Property μ (%)
Rebound resilience test the samples were compressed to 50% of the original thickness (by stacking multiple layers of fibrous paper samples), placed at 70 ℃ for 22 hours, removed to allow pressure relief, placed for 30 minutes, tested for thickness and the compression set value calculated according to standard ASTM D3574-2017, sample size 80x80mm, sample thickness greater than 25 mm.
Compression set value of aerogel soft paper: can reach 2% < C < 10%.
Compression performance test standard according to ASTM C165-2012, sample size 150x150mm, sample thickness greater than 25mm (by stacking multiple plies of fibrous paper sample), compression rate of 2mm/s, sample applied 350KPa pressure, deformation rate of test sample: mu is more than 60 percent and less than or equal to 80 percent.
Aerogel fiber paper samples prepared according to the examples were tested as described above and the results are shown in table 1 below.
TABLE 1
The foregoing is only a preferred embodiment of the present invention. It will be appreciated that various modifications, combinations, alterations, and substitutions of the details and features of the invention may be made by those skilled in the art without departing from the spirit and nature of the invention. Such modifications, combinations, alterations and substitutions are also to be understood as being included within the scope of the invention as claimed.
Claims (21)
1. Heat-resistant compressed paper characterized by comprising the following composition, based on the total weight of the heat-resistant compressed paper:
1-40 wt% aerogel;
25-80 wt% inorganic fiber;
1-50 wt% of a filler; and
2-20 wt% of an organic binder;
wherein the inorganic fiber is selected from one or more of ceramic fiber, glass fiber and alumina fiber.
2. The heat-resistant compressed paper according to claim 1, having a thickness of 0.5 to 20 mm.
3. The heat resistant compression paper of claim 1 or 2, wherein the composition is configured to have a deformation ratio of 40-70% at a pressure of 2MPa, as determined according to ASTM C165-2012.
4. The heat-resistant compressed paper according to claim 3, wherein the composition of the heat-resistant compressed paper comprises:
1-40 wt% aerogel;
25-60 wt% inorganic fiber;
20-50 wt% of a filler; and
2-15 wt% of an organic binder.
5. The heat resistant compression paper of claim 1 or 2, wherein the composition is configured to have a deformation ratio of 35-60% at a pressure of 1MPa, as determined according to ASTM C165-2012.
6. The heat-resistant compressed paper according to claim 5, wherein the composition of the heat-resistant compressed paper comprises:
1-40 wt% aerogel;
25-70 wt% inorganic fiber;
10-40 wt% of a filler; and
2-15 wt% of an organic binder.
7. The heat resistant compression paper of claim 1 or 2, wherein the composition is configured to have a compression set of 2% -10% as determined according to ASTM D3574-2017.
8. The heat-resistant compressed paper according to claim 7, wherein the composition of the heat-resistant compressed paper comprises:
1-8 wt% aerogel;
25-80 wt% inorganic fiber;
1-20 wt% of a filler; and
5-20 wt% of organic binder.
9. The heat resistant compression paper of claim 1 or 2, wherein the composition is configured to have a deformation ratio of 60-80% at a pressure of 350kPa determined according to ASTM C165-2012.
10. The heat-resistant compressed paper according to claim 9, wherein the composition of the heat-resistant compressed paper comprises:
1-10 wt% aerogel;
25-80 wt% inorganic fiber;
1-20 wt% of a filler; and
2-20 wt% of an organic binder.
11. The heat resistant compressed paper according to claim 1 or 2, wherein the weight ratio of inorganic fibers to aerogel is at least 1.5: 1.
12. The heat resistant compressed paper according to claim 1 or 2, wherein the weight ratio of inorganic fibers to aerogel is at least 2.0: 1.
13. The heat-resistant compression paper as set forth in claim 1 or 2, the filler being selected from the group consisting of quartz powder, alumina powder, kaolin, white mud and bentonite.
14. The heat-resistant compressed paper according to claim 1 or 2, further comprising one or more of the following components based on the total weight of the heat-resistant compressed paper: 0.3-2% of wet strength agent, 0.02-0.9% of defoaming agent, 0-3% of flame retardant, 0.5-2.5% of film forming agent, 4.5-15% of organic binder, 0.45-2% of reinforcing agent and 0.02-1% of flocculating agent.
15. A method of making heat-resistant compressed paper, comprising:
carrying out hydrophilic modification on the hydrophobic aerogel by using a wetting agent and a dispersing agent to obtain hydrophilic modified aerogel;
pulping inorganic fibers in a first solvent to obtain inorganic fiber pulp;
adding the hydrophilic modified aerogel into the inorganic fiber slurry to obtain inorganic fiber-aerogel slurry;
forming the inorganic fiber-aerogel slurry into heat-resistant compressed paper;
wherein the inorganic fiber is selected from one or more of ceramic fiber, glass fiber and alumina fiber.
16. The method of claim 15, the step of hydrophilically modifying comprising:
adding the wetting agent and the dispersing agent into a second solvent, and carrying out first stirring to obtain a first mixture;
adding aerogel powder into the first mixture, and carrying out second stirring to obtain a second mixture;
and grinding the second mixture to obtain the hydrophilic modified aerogel slurry.
17. The method of claim 15, wherein the wetting agent comprises one or more of a cationic wetting agent and a non-ionic wetting agent, preferably selected from the group consisting of carboxylates, sulfates, sulfonates, silicone polyethers, and polyols;
the dispersant comprises one or more of an anionic dispersant and a non-ionic dispersant, preferably selected from the group consisting of amine salts, polyethylene, polypropylene, polystyrene, polyethylene glycol and polyvinyl alcohol; and is
The first solvent and the second solvent are independently water.
18. The method of claim 15, wherein the weight percent of the aerogel is 1.9-9.1%, the weight percent of the wetting agent is 0.2-3.8%, and the weight percent of the dispersing agent is 0.2-1.9%, based on the total weight of the hydrophilic modification step feedstock.
19. The method of claim 16, wherein the aerogel has an average particle size of 30-70 μ ι η.
20. The method of claim 15, further comprising:
an auxiliary agent selected from the group consisting of fillers, organic binders, and optionally one or more selected from the group consisting of wet strength agents, defoamers, film formers, reinforcing agents, flame retardants, and flocculants is added to the inorganic fiber slurry.
21. A battery module comprising the heat-resistant compressed paper according to any one of claims 1 to 14.
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| CN202110804610.7A CN114075799B (en) | 2021-07-16 | 2021-07-16 | Heat-resistant compressed paper, preparation method thereof and battery module |
| GBGB2113974.6A GB202113974D0 (en) | 2021-07-16 | 2021-09-30 | A heat resistant compressible paper and preparation method thereof, and battery module |
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| CN115583829A (en) * | 2022-10-26 | 2023-01-10 | 中化学华陆新材料有限公司 | Low-thermal-conductivity-coefficient fiber composite aerogel wet-process felt and preparation method thereof |
| EP4446000A1 (en) * | 2023-04-12 | 2024-10-16 | Samsung SDI Co., Ltd. | Aerogel composition for battery insulation sheet, manufacturing method thereof, and manufacturing method for a battery insulation sheet |
| EP4461776A1 (en) * | 2023-05-08 | 2024-11-13 | Samsung SDI Co., Ltd. | Aerogel composition for battery insulation sheet, manufacturing method thereof, battery insulation sheet formed using the same, and battery module comprising the same |
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| GB202113974D0 (en) | 2021-11-17 |
| CN114075799B (en) | 2023-07-07 |
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