CN115181489A - Sound-absorbing coating and preparation method and application thereof - Google Patents
Sound-absorbing coating and preparation method and application thereof Download PDFInfo
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- CN115181489A CN115181489A CN202210920396.6A CN202210920396A CN115181489A CN 115181489 A CN115181489 A CN 115181489A CN 202210920396 A CN202210920396 A CN 202210920396A CN 115181489 A CN115181489 A CN 115181489A
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- absorbing coating
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- polyurethane
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- 238000000576 coating method Methods 0.000 title claims abstract description 106
- 239000011248 coating agent Substances 0.000 title claims abstract description 104
- 238000002360 preparation method Methods 0.000 title abstract description 70
- 239000004814 polyurethane Substances 0.000 claims abstract description 85
- 229920002635 polyurethane Polymers 0.000 claims abstract description 85
- 239000000839 emulsion Substances 0.000 claims abstract description 63
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 29
- 239000004964 aerogel Substances 0.000 claims abstract description 24
- 238000002156 mixing Methods 0.000 claims abstract description 18
- 239000004965 Silica aerogel Substances 0.000 claims description 42
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 38
- 238000010521 absorption reaction Methods 0.000 claims description 37
- 229910021389 graphene Inorganic materials 0.000 claims description 25
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 23
- 239000000945 filler Substances 0.000 claims description 23
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 20
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 20
- 239000002270 dispersing agent Substances 0.000 claims description 19
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- 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 14
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- -1 polydimethylsiloxane Polymers 0.000 claims description 12
- 239000002904 solvent Substances 0.000 claims description 12
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 10
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- 239000004408 titanium dioxide Substances 0.000 claims description 8
- 239000005058 Isophorone diisocyanate Substances 0.000 claims description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 7
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 claims description 7
- 239000000049 pigment Substances 0.000 claims description 7
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- 239000012071 phase Substances 0.000 claims description 4
- 229920001296 polysiloxane Polymers 0.000 claims description 4
- 239000005057 Hexamethylene diisocyanate Substances 0.000 claims description 3
- 239000011258 core-shell material Substances 0.000 claims description 3
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 claims description 3
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 claims description 2
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 2
- KXBFLNPZHXDQLV-UHFFFAOYSA-N [cyclohexyl(diisocyanato)methyl]cyclohexane Chemical compound C1CCCCC1C(N=C=O)(N=C=O)C1CCCCC1 KXBFLNPZHXDQLV-UHFFFAOYSA-N 0.000 claims description 2
- 229920001400 block copolymer Polymers 0.000 claims description 2
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 2
- 150000002191 fatty alcohols Chemical class 0.000 claims description 2
- AYLRODJJLADBOB-QMMMGPOBSA-N methyl (2s)-2,6-diisocyanatohexanoate Chemical compound COC(=O)[C@@H](N=C=O)CCCCN=C=O AYLRODJJLADBOB-QMMMGPOBSA-N 0.000 claims description 2
- 239000010445 mica Substances 0.000 claims description 2
- 229910052618 mica group Inorganic materials 0.000 claims description 2
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 2
- 229920000058 polyacrylate Polymers 0.000 claims description 2
- 229920000767 polyaniline Polymers 0.000 claims description 2
- 229920005646 polycarboxylate Polymers 0.000 claims description 2
- 229920000570 polyether Polymers 0.000 claims description 2
- 229920002503 polyoxyethylene-polyoxypropylene Polymers 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 230000000087 stabilizing effect Effects 0.000 claims description 2
- 239000000454 talc Substances 0.000 claims description 2
- 229910052623 talc Inorganic materials 0.000 claims description 2
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 claims description 2
- 239000011787 zinc oxide Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 2
- 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 abstract description 21
- 230000000694 effects Effects 0.000 abstract description 21
- 239000003063 flame retardant Substances 0.000 abstract description 21
- 230000000844 anti-bacterial effect Effects 0.000 abstract description 19
- 239000003242 anti bacterial agent Substances 0.000 abstract description 7
- 230000000052 comparative effect Effects 0.000 description 27
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 11
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 9
- 235000012239 silicon dioxide Nutrition 0.000 description 8
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- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 239000011521 glass Substances 0.000 description 4
- DCKVNWZUADLDEH-UHFFFAOYSA-N sec-butyl acetate Chemical compound CCC(C)OC(C)=O DCKVNWZUADLDEH-UHFFFAOYSA-N 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- 239000012752 auxiliary agent Substances 0.000 description 3
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- 230000007613 environmental effect Effects 0.000 description 3
- 229910021645 metal ion Inorganic materials 0.000 description 3
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- 230000009965 odorless effect Effects 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 238000002791 soaking Methods 0.000 description 3
- 229920005789 ACRONAL® acrylic binder Polymers 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 230000000172 allergic effect Effects 0.000 description 2
- 208000010668 atopic eczema Diseases 0.000 description 2
- 239000003899 bactericide agent Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
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- 238000001291 vacuum drying Methods 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 241000276489 Merlangius merlangus Species 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 230000000843 anti-fungal effect Effects 0.000 description 1
- 230000000845 anti-microbial effect Effects 0.000 description 1
- 239000004599 antimicrobial Substances 0.000 description 1
- 208000006673 asthma Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000001963 growth medium Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000002085 irritant Substances 0.000 description 1
- 231100000021 irritant Toxicity 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
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- 238000005259 measurement Methods 0.000 description 1
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- 239000005416 organic matter Substances 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 150000003856 quaternary ammonium compounds Chemical class 0.000 description 1
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- 229910052709 silver Inorganic materials 0.000 description 1
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- 238000003911 water pollution Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Plant Pathology (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention provides a sound-absorbing coating and a preparation method and application thereof. The sound-absorbing coating comprises, by weight, 10-25 parts of hybrid emulsion and 20-40 parts of polyurethane graphene-silicon dioxide aerogel. The preparation method of the sound-absorbing coating comprises the following steps: and mixing the hybrid emulsion with the polyurethane graphene-silicon dioxide aerogel to obtain the sound-absorbing coating. According to the sound-absorbing coating provided by the invention, the hybrid emulsion with a specific content and the polyurethane graphene-silicon dioxide aerogel are compounded, so that the sound-absorbing coating has excellent sound-absorbing and noise-reducing functions, good antibacterial and mildewproof effects and high flame retardant grade, an antibacterial agent and a flame retardant are not required to be additionally added, the environment is protected, the preparation process is simple, and the cost is low.
Description
Technical Field
The invention belongs to the technical field of coatings, and particularly relates to a sound-absorbing coating as well as a preparation method and application thereof.
Background
With the rapid development of the economy of China and the rapid improvement of the living standard of people, the environmental protection consciousness of the whole society is enhanced. New technologies and new materials that are environmentally friendly are receiving more and more attention. In many fields, healthier and more environmentally friendly materials are eliminating the backward technology of high pollution and high energy consumption. The social concern about noise pollution is a clear example, which is considered to be second only to the third largest public nuisance of atmospheric pollution and water pollution. Many enterprises grasp the trend and rapidly put into the application research of noise abatement. The traditional sound absorption method is to coat sound absorption cotton, sound absorption boards and other materials, and the method strengthens the sound absorption effect of the structure on the basis of not changing the decoration effect, but the decoration has high cost and is particularly easy to damage. The sound-absorbing coating is low in cost, easy to process and widely concerned. And theaters, meeting places, shopping malls, houses, villas, hotels and the like are the most suitable sound-absorbing coatings for places with strong decoration and needing sound absorption.
The existing sound-absorbing coating is mostly made of acrylic emulsion as a film-forming substance, but the surface of the coating film is possibly invaded by harmful microorganisms such as bacteria, mould and the like, so that the coating film is discolored, pulverized and shed, and the sound-absorbing coating is easy to pulverize and shed due to large surface area and poor smoothness; in addition, if harmful microorganisms exist on the surface of the coating film, various diseases can be infected after the coating film is contacted with a human body, and the health of the human body is threatened; in the prior art, the antibacterial agent commonly contains metal ions such as silver ions and copper ions, but the metal ions are easily released into the environment to threaten aquatic organisms, and a coating film is easy to discolor and has high cost by using the copper ions; another class of antimicrobial agents are quaternary ammonium compounds, but quaternary ammonium salts can remain on the surface of the coating film and are prone to produce lung irritants and cause asthma and other respiratory problems when in contact with the human body.
For example, CN113736321A discloses a sound absorbing coating and a preparation method thereof. The sound-absorbing coating comprises emulsion, titanium dioxide, fibers, filler, a flame retardant, cellulose, an auxiliary agent and water; the sound-absorbing coating is compounded by emulsion, filler, fiber and other components, so that the sound-absorbing coating has the effects of sound absorption, heat preservation and fire prevention. Although the aluminum hydroxide flame retardant is added into the sound-absorbing coating, the flame retardant effect is still to be further improved; and the sound-absorbing coating is a water-based emulsion coating, and has poor antibacterial and mildew-proof properties.
For example, CN105838164A discloses an aqueous nano antibacterial sound-absorbing coating, which comprises acrylic resin emulsion, aqueous nano silver antibacterial agent, titanium dioxide, filler, expanded perlite, auxiliary agent and water. The sound-absorbing coating has the special effects of resisting bacteria, inhibiting mould and purifying organic matters and peculiar smell in air. However, the sound absorption effect of the sound absorbing coating is to be further improved, and metal ions are easily released into the environment to threaten aquatic organisms.
Therefore, the development of a healthy and environment-friendly coating with good sound absorption effect, high antibacterial and mildewproof grade and high flame retardant grade is an urgent problem to be solved in the field.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the sound-absorbing coating and the preparation method and application thereof, and the sound-absorbing coating is prepared by compounding the hybrid emulsion with a specific content and the polyurethane graphene-silicon dioxide aerogel, so that the sound-absorbing coating has excellent sound-absorbing and noise-reducing functions, good antibacterial and mildewproof effects and high flame retardant grade, does not need to be additionally added with an antibacterial agent and a flame retardant, and is environment-friendly.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides a sound absorption coating, which comprises, by weight, 10-25 parts of a hybrid emulsion and 20-40 parts of a polyurethane graphene-silica aerogel.
According to the sound-absorbing coating, the polyurethane graphene-silicon dioxide aerogel is introduced into the sound-absorbing coating, so that the microporous structure in the sound-absorbing coating is greatly increased, the coating has super-strong sound-absorbing capacity, and gaps and cavities in the coating are further increased by combining the hybrid emulsion with the polyurethane graphene-silicon dioxide aerogel; the sound waves shuttle between the micro-holes and the bubbles, and the vibration of the sound waves causes friction between the sound waves and the hole walls, so that part of sound energy is converted into heat energy to be consumed, and the sound absorption effect of the sound absorption coating is greatly improved.
Preferably, the sound absorbing coating includes 10 to 25 parts by weight of the hybrid emulsion, for example, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, 20 parts, 21 parts, 22 parts, 23 parts, 24 parts, etc.
Preferably, the sound absorption coating comprises 20 to 40 parts by weight of polyurethane graphene-silica aerogel, for example, 21 parts, 22 parts, 23 parts, 24 parts, 25 parts, 26 parts, 27 parts, 28 parts, 29 parts, 30 parts, 31 parts, 32 parts, 33 parts, 34 parts, 35 parts, 36 parts, 37 parts, 38 parts, 39 parts and the like.
According to the invention, the hybrid emulsion and the polyurethane graphene-silicon dioxide aerogel are compounded in a specific content, so that the sound absorption performance of the sound absorption coating is better; the content of the hybrid emulsion or the polyurethane graphene-silica aerogel is too much or too little, and the sound absorption effect is deteriorated.
Preferably, the hybrid emulsion comprises an organic-inorganic hybrid emulsion.
Preferably, the organic-inorganic hybrid emulsion is a hybrid emulsion having a microporous structure.
Preferably, the organic-inorganic hybrid emulsion has a pH value of 11 to 12.
Preferably, the organic-inorganic hybrid emulsion has a core-shell structure with an inorganic phase as a core and an organic phase as a shell.
Preferably, the inorganic phase material in the organic-inorganic hybrid emulsion includes at least one of silica, titanium dioxide, zinc oxide, or calcium carbonate.
Preferably, the organic phase material in the organic-inorganic hybrid emulsion comprises at least one of polyurethane, polyacrylate, polyaniline or polydimethylsiloxane.
According to the invention, the organic-inorganic hybrid emulsion with a core-shell structure and a microporous structure is selected, the inorganic core is taken as a net structure, and an organic matter chain segment with a large surface molecule is added, so that the emulsion is rich in a plurality of micropores, meanwhile, the sound-absorbing coating has a higher pH value due to the strong alkalinity of inorganic matters, protein cells of microorganisms can be denatured under the high-alkaline condition, finally, viruses and bacteria can not survive, and the antibacterial and mildewproof performance of the sound-absorbing coating is improved. Meanwhile, the micropore structure increases the gaps of the coating, and the gaps and the cavities can absorb shock energy and block the transmission of sound waves, so that the sound absorption effect of the sound absorption coating is further increased.
In the invention, the alkalinity of the organic-inorganic hybrid emulsion is not too strong, namely the pH value is not too high, when the pH value is more than 12, the emulsion belongs to dangerous chemicals, and in addition, the emulsion has very high pH value and is easy to react with an auxiliary agent containing ammonia to play a side effect.
Preferably, the raw materials of the polyurethane graphene-silica aerogel comprise polyurethane graphene and a silicon source.
Preferably, the mass ratio of the polyurethane graphene to the silicon source is (0.5 to 2.5): 1, and may be, for example, 0.6.
In the invention, the mass ratio of the polyurethane graphene to the silicon source is in a specific range, so that the sound absorption effect of the sound absorption coating is better.
In the present invention, the silicon source includes, but is not limited to, tetraethoxysilane.
Preferably, the raw materials of the polyurethane graphene comprise polyisocyanate and hydroxylated graphene.
Preferably, the mass ratio of the polyisocyanate to the hydroxylated graphene is (1 to 3): 1, and can be, for example, 1.1.
Preferably, the polyisocyanate includes at least one of isophorone diisocyanate, toluene diisocyanate, diphenylmethane diisocyanate, dicyclohexylmethane diisocyanate, hexamethylene diisocyanate, or lysine diisocyanate.
In the invention, the polyurethane graphene-silica aerogel is prepared by adopting the following method, wherein the method comprises the following steps:
(1) Reacting polyisocyanate with hydroxylated graphene to obtain polyurethane graphene;
(2) Taking a silicon source as a precursor, and carrying out hydrolytic condensation to obtain silicon dioxide gel; and (2) subsequently, reacting the silicon dioxide gel with the polyurethane graphene obtained in the step (1), and drying to obtain the polyurethane graphene-silicon dioxide aerogel.
Preferably, the reaction of step (1) is carried out in the presence of a catalyst.
Preferably, the catalyst comprises triethylamine or potassium hydroxide.
Preferably, the reaction temperature in step (1) is 75 to 85 ℃, for example 76 ℃, 78 ℃, 80 ℃, 82 ℃, 84 ℃ and the like.
Preferably, the reaction time in step (1) is 3 to 5 hours, for example, 3.5 hours, 4 hours, 4.5 hours.
Preferably, the reaction in step (1) further comprises a step of heat preservation.
Preferably, the time for the heat preservation is 20 to 40min, for example, 25min, 30min, 35min and the like can be used.
Preferably, the specific steps of obtaining the silica gel in the step (2) comprise: dissolving ethyl orthosilicate by using acid to obtain a silicic acid solution; and adding alkali into the silicic acid solution, stirring, and standing to obtain the silicon dioxide gel.
Preferably, the acid dissolves tetraethoxysilane to maintain a pH of 1 to 2.
Preferably, an alkali is added to the silicic acid solution to adjust the pH to 5 to 6.
Preferably, the stirring time is 40 to 80 seconds, for example, 50 seconds, 60 seconds, 70 seconds, and the like.
Preferably, the step of standing aging and solvent replacement is further included after the silica gel is obtained.
Preferably, the aging time is 22 to 26 hours, for example, 23 hours, 24 hours, 25 hours and the like.
Preferably, the solvent displacement comprises soaking the aged gel in butyl ester.
Preferably, the soaking time is 22-26 h, for example, 23h, 24h, 25h and the like.
In the invention, the butyl ester solvent is replaced every 6 to 8 hours in the solvent replacement process.
The reaction temperature in the step (2) is preferably 75 to 85 ℃, and may be 76 ℃, 78 ℃, 80 ℃, 82 ℃, 84 ℃ or the like, for example.
Preferably, the reaction time in step (2) is 3 to 5 hours, for example, 3.5 hours, 4 hours, 4.5 hours.
Preferably, the reaction in step (2) further comprises a step of heat preservation.
Preferably, in the step (2), the time for the heat preservation is 20 to 40min, for example, 25min, 30min, 35min and the like can be provided.
Preferably, the drying in step (2) includes room temperature drying and vacuum drying.
Preferably, the room temperature drying time is 22 to 26 hours, for example, 23 hours, 24 hours, 25 hours and the like.
Preferably, the vacuum drying time is 22 to 26 hours, and for example, 23 hours, 24 hours, 25 hours and the like can be set.
Preferably, the sound absorbing coating further comprises 0.1 to 0.5 parts by weight of cellulose, for example, 0.1 part, 0.2 part, 0.3 part, 0.4 part, etc.
Preferably, the cellulose comprises hydroxyethyl cellulose.
Preferably, the sound absorbing coating further includes 15 to 25 parts by weight of a first filler, for example, 16 parts, 18 parts, 20 parts, 22 parts, 24 parts, etc.
Preferably, the first filler comprises at least one of kaolin, heavy calcium, talc or mica powder.
Preferably, the first filler comprises a combination of kaolin and heavy calcium.
Preferably, the mass ratio of kaolin to coarse whiting in the first filler is 1 (1.5 to 4.5), and may be, for example, 1.
In the invention, the first filler is a combination of kaolin and heavy calcium carbonate, and the kaolin and the heavy calcium carbonate have good coating appearance in a specific ratio.
Preferably, the sound absorbing coating further comprises 0.4 to 1 part of dispersant by weight, and can be 0.5 part, 0.6 part, 0.7 part, 0.8 part, 0.9 part and the like.
Preferably, the dispersant comprises a modified polyacrylic dispersant and/or a modified polycarboxylate dispersant.
Preferably, the sound absorbing coating further comprises 0.1 to 0.5 parts by weight of a wetting agent, for example, 0.1 part, 0.2 part, 0.3 part, 0.4 part, etc.
Preferably, the wetting agent comprises at least one of polyoxyethylene alkylphenol ether, polyoxyethylene fatty alcohol ether, polyoxyethylene-polyoxypropylene block copolymer.
Preferably, the sound-absorbing coating material further comprises 0.1 to 0.5 parts by weight of a defoaming agent, and may be, for example, 0.1 part, 0.2 part, 0.3 part, 0.4 part or the like.
Preferably, the defoamer comprises a polysiloxane and/or a polyether modified polysiloxane.
Preferably, the sound absorbing coating further comprises 0.05 to 2 parts by weight of a thickener, which may be, for example, 0.1 part, 0.2 part, 0.4 part, 0.6 part, 0.8 part, 1 part, 1.2 parts, 1.4 parts, 1.6 parts, 1.8 parts, etc.
Preferably, the sound absorption coating further comprises 5 to 20 parts by weight of pigment and filler, such as 6 parts, 8 parts, 10 parts, 12 parts, 14 parts, 16 parts, 18 parts and the like.
Preferably, the pigment filler comprises titanium dioxide.
Preferably, the sound absorbing coating material has a solid content of 65 to 95%, and may be, for example, 66%, 68%, 70%, 75%, 80%, 85%, 90%, 92%, 94%, or the like.
In a second aspect, the present invention provides a method for preparing the sound-absorbing coating according to the first aspect, the method comprising:
and mixing the hybrid emulsion with the polyurethane graphene-silicon dioxide aerogel to obtain the sound-absorbing coating.
Preferably, the mixed material further comprises at least one of cellulose, a first filler, a dispersant, a wetting agent, a defoamer, a thickener or a pigment filler.
Preferably, the mixing is carried out in a solvent.
Preferably, the solvent comprises water.
Preferably, the preparation method of the sound-absorbing coating comprises the following steps:
(1) Mixing a solvent with optional cellulose, a dispersing agent, a wetting agent or a defoaming agent to obtain a dispersion liquid;
(2) Mixing the dispersion liquid obtained in the step (1) with optional pigment and filler and/or first filler to obtain a stable liquid;
(3) Mixing the stabilizing solution obtained in the step (2) with a hybrid emulsion, polyurethane graphene-silicon dioxide gel and an optional defoaming agent to obtain a primary product solution;
(4) And (3) mixing the primary liquid obtained in the step (3) with an optional thickener and/or a solvent to obtain the sound-absorbing coating.
Preferably, the mixing time in step (2) is 20-40 min, such as 25min, 30min, 35min, etc.
In a third aspect, the present invention provides a use of the sound absorbing coating according to the first aspect for sound absorption and noise reduction.
The recitation of numerical ranges herein includes not only the above-recited values, but also any values between any of the above-recited numerical ranges not recited, and for brevity and clarity, is not intended to be exhaustive of the specific values encompassed within the range.
Compared with the prior art, the invention has the following beneficial effects:
according to the sound-absorbing coating provided by the invention, the hybrid emulsion with a specific content and the polyurethane graphene-silicon dioxide aerogel are compounded, so that the sound-absorbing coating has excellent sound-absorbing and noise-reducing functions, good antibacterial and mildewproof effects and high flame retardant grade, does not need to be additionally added with an antibacterial agent and a flame retardant, and is safer and lasting; the method has the advantages of no need of in-tank bactericide to create a non-allergic living environment, low cost, simple preparation process, contribution to large-scale production and environmental friendliness.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments. It should be understood by those skilled in the art that the examples are only for the understanding of the present invention and should not be construed as the specific limitation of the present invention.
In the present invention, all the materials used in the preparation examples, examples and comparative examples are as follows, unless otherwise specified:
organic-inorganic hybrid emulsion: of basf
EDGE 7073
Organic-inorganic hybrid emulsion (without microporous structure): pasteur Acronal PLUS7602
Cellulose: letian B30K
Dispersing agent: french Gaotai chemical ECODIS P30
Wetting agent: AH-100 of Blackberk
Defoaming agent: BYK0245, byk Chemicals, germany
Titanium dioxide: 699 rutile titanium dioxide of python
Thickening agent: malhund of Dow chemical Co TM ASE-60
Hydroxylated graphene: nanjing Jicang nanotechnology Co., ltd, JCG-1-3-OH
Ordinary odorless emulsion: bardifu RS-8120 emulsion
Hollow glass beads: hebei Heiyi mining Co., ltd YL-253
Preparation example 1
A polyurethane graphene-silicon dioxide aerogel comprises the following raw materials, by weight, 6.1 parts of polyurethane graphene and 3.76 parts of ethyl orthosilicate; the raw materials of the polyurethane graphene comprise 4 parts of isophorone diisocyanate and 2 parts of hydroxylated graphene.
A preparation method of the polyurethane graphene-silicon dioxide aerogel specifically comprises the following steps:
(1) Adding isophorone diisocyanate, hydroxylated graphene and 0.1 part of triethylamine into a reaction kettle, heating to 80 ℃, reacting for 4 hours, and keeping the temperature for 30min to obtain polyurethane graphene;
(2) Diluting ethyl orthosilicate serving as a precursor by using deionized water according to a volume ratio of 3; then adding 1mol/L ammonia water solution, adjusting the pH value of the silicic acid solution to 5-6, stirring for 1min, pouring into a mold, standing at room temperature to convert the silicic acid solution into gel, standing and aging for 24h, taking out, transferring into butyl ester solution, soaking for 24h, and replacing the butyl ester solution every 8 h; and (2) adding the polyurethane graphene obtained in the step (1), adding 0.1 part of triethylamine, heating to 80 ℃, reacting for 4 hours, preserving heat for 30min, placing at room temperature, drying for 24 hours, and then drying in 50% vacuum for 24 hours to obtain the polyurethane graphene-silicon dioxide aerogel.
Preparation example 2
A polyurethane graphene-silicon dioxide aerogel is prepared from the following raw materials, by weight, 5 parts of polyurethane graphene and 4.86 parts of ethyl orthosilicate; the raw materials of the polyurethane graphene comprise 3.6 parts of isophorone diisocyanate and 2.4 parts of hydroxylated graphene.
The preparation method of the polyurethane graphene-silicon dioxide aerogel comprises the specific steps of the preparation method 1.
Preparation example 3
A polyurethane graphene-silicon dioxide aerogel comprises the following raw materials, by weight, 6.8 parts of polyurethane graphene and 3.06 parts of ethyl orthosilicate; the raw materials of the polyurethane graphene comprise 4.5 parts of hexamethylene diisocyanate and 1.5 parts of hydroxylated graphene.
The preparation method of the polyurethane graphene-silicon dioxide aerogel is the same as that of preparation example 1 in specific steps.
Preparation example 4
A polyurethane graphene-silica aerogel is different from preparation example 1 only in that the total amount of the polyurethane graphene and tetraethoxysilane is unchanged, the mass ratio of the polyurethane graphene to tetraethoxysilane is 0.4.
Preparation example 5
A polyurethane graphene-silica aerogel is different from preparation example 1 only in that the total amount of the polyurethane graphene and tetraethoxysilane is unchanged, the mass ratio of the polyurethane graphene to tetraethoxysilane is 3.
Preparation example 6
A polyurethane graphene-silica aerogel is different from preparation example 1 only in that the total amount of isophorone diisocyanate and hydroxylated graphene is unchanged, the mass ratio is 4.
Preparation example 7
A polyurethane graphene-silica aerogel is different from preparation example 1 only in that the total amount of isophorone diisocyanate and hydroxylated graphene is unchanged, the mass ratio is 0.8.
Preparation example 8
A graphene-silica aerogel, which is different from preparation example 1 only in that in the preparation method, step (1) is not performed, polyurethane graphene is replaced by graphene hydroxide in step (2), and other raw materials, use amounts and parameters are the same as those in preparation example 1.
Preparation example 9
A polyurethane-silica aerogel, which is different from preparation example 1 only in that, in the preparation method, hydroxylated graphene is replaced with organosiloxane diol (xingda 209) in step (1), and other raw materials, amounts and parameters are the same as those of preparation example 1.
Preparation example 10
A silica aerogel is different from preparation example 1 only in that in the preparation method, step (1) is not performed, polyurethane graphene obtained in step (1) is not added in step (2) for reaction, and drying is performed to obtain the silica aerogel, and other raw materials, using amounts and parameters are the same as those in preparation example 1.
Example 1
This example provides a sound-absorbing coating comprising, by weight, 20 parts of an organic-inorganic hybrid emulsion, 30 parts of a polyurethane graphene-silica aerogel (preparation example 1), 0.2 part of hydroxyethyl cellulose ether, 5 parts of calcined kaolin, 15 parts of ground calcium carbonate, 10 parts of rutile titanium dioxide, 0.2 part of a dispersant, 0.2 part of a wetting agent, 0.2 part of a defoamer, 0.5 part of a thickener, and water; the solid content of the sound-absorbing coating is 81.3%.
The embodiment provides a preparation method of the sound-absorbing coating, which comprises the following specific steps:
(1) Mixing hydroxyethyl cellulose ether, a dispersing agent, a wetting agent and a defoaming agent with water, and uniformly stirring to obtain a dispersion liquid;
(2) Stirring the dispersion liquid obtained in the step (1), rutile type titanium dioxide, calcined kaolin and heavy calcium carbonate at a high speed for 30min to obtain a stable liquid;
(3) Mixing the stable liquid obtained in the step (2) with organic-inorganic hybrid emulsion, polyurethane graphene-silicon dioxide aerogel and a defoaming agent under a stirring state, and uniformly stirring to obtain a primary product liquid;
(4) And (4) mixing the primary product liquid obtained in the step (3) with a thickening agent and water, adjusting the viscosity, and uniformly stirring to obtain the sound-absorbing coating.
Example 2
The embodiment provides a sound absorption coating, which comprises, by weight, 20 parts of an organic-inorganic hybrid emulsion, 20 parts of a polyurethane graphene-silica aerogel (preparation example 2), 0.2 part of hydroxyethyl cellulose ether, 5 parts of calcined kaolin, 15 parts of ground calcium carbonate, 10 parts of rutile titanium dioxide, 0.2 part of a dispersing agent, 0.2 part of a wetting agent, 0.2 part of an antifoaming agent, 0.5 part of a thickening agent, and water; the solid content of the sound-absorbing coating was 71.3%.
This example provides a method for preparing the sound-absorbing coating, which includes the same steps as in example 1.
Example 3
The embodiment provides a sound absorption coating, which comprises, by weight, 20 parts of an organic-inorganic hybrid emulsion, 40 parts of a polyurethane graphene-silica aerogel (preparation example 3), 0.2 part of hydroxyethyl cellulose ether, 5 parts of calcined kaolin, 15 parts of ground calcium carbonate, 10 parts of rutile titanium dioxide, 0.2 part of a dispersing agent, 0.2 part of a wetting agent, 0.2 part of an antifoaming agent, 0.5 part of a thickening agent, and water; the solid content of the sound-absorbing coating was 91.3%.
This example provides a method for preparing the sound-absorbing coating, which includes the same steps as in example 1.
Example 4
This example provides a sound-absorbing coating, which includes, by weight, 20 parts of an organic-inorganic hybrid emulsion, 35 parts of a polyurethane graphene-silica aerogel (preparation example 1), 0.2 part of hydroxyethyl cellulose ether, 5 parts of calcined kaolin, 15 parts of ground calcium carbonate, 10 parts of rutile titanium dioxide, 0.2 part of a dispersant, 0.2 part of a wetting agent, 0.2 part of a defoaming agent, 0.5 part of a thickener, and water; the solid content of the sound-absorbing coating is 86.3%.
The embodiment provides a preparation method of the sound-absorbing coating, and the specific steps are the same as those of the embodiment 1.
Example 5
The embodiment provides a sound absorption coating, which comprises, by weight, 15 parts of an organic-inorganic hybrid emulsion, 38 parts of a polyurethane graphene-silica aerogel (preparation example 1), 0.2 part of hydroxyethyl cellulose ether, 5 parts of calcined kaolin, 10 parts of ground calcium carbonate, 15 parts of rutile titanium dioxide, 0.2 part of a dispersing agent, 0.2 part of a wetting agent, 0.2 part of an antifoaming agent, 0.5 part of a thickening agent, and water; the solid content of the sound-absorbing coating was 84.3%.
The embodiment provides a preparation method of the sound-absorbing coating, and the specific steps are the same as those of the embodiment 1.
Example 6
This example provides an acoustic absorption coating, which is different from example 1 only in that the polyurethane graphene-silica aerogel is the polyurethane graphene-silica aerogel provided in preparation example 4, and the other components, the amounts and the preparation method are the same as those of example 1.
Example 7
This example provides an acoustic absorption coating, which is different from example 1 only in that the polyurethane graphene-silica aerogel is the polyurethane graphene-silica aerogel provided in preparation example 5, and the other components, the amounts and the preparation method are the same as those of example 1.
Example 8
This example provides an acoustic absorption coating, which is different from example 1 only in that the polyurethane graphene-silica aerogel is the polyurethane graphene-silica aerogel provided in preparation example 6, and the other components, the amounts and the preparation method are the same as those of example 1.
Example 9
This example provides an acoustic paint, which is different from example 1 only in that the polyurethane graphene-silica aerogel is the polyurethane graphene-silica aerogel provided in preparation example 7, and the other components, the amounts and the preparation method are the same as those of example 1.
Example 10
This example provides an acoustical paint, which differs from example 1 only in that the organic-inorganic hybrid emulsion is replaced with a general odorless emulsion, and the other components, amounts, and preparation methods are the same as example 1.
Example 11
This example provides a sound-absorbing paint, which is different from example 1 only in that the organic-inorganic hybrid emulsion is replaced with an organic-inorganic hybrid emulsion having no microporous structure (basf Acronal PLUS 7602), and the other components, amounts and preparation method are the same as example 1.
Comparative example 1
This comparative example provides an acoustic paint, which is different from example 1 only in that the polyurethane graphene-silica aerogel is replaced with the graphene-silica aerogel provided in preparation example 8, and the other components, the amounts and the preparation method are the same as those of example 1.
Comparative example 2
This comparative example provides an acoustic paint, which is different from example 1 only in that the polyurethane graphene-silica aerogel is replaced with the polyurethane graphene provided in preparation example 1, and the other components, the amounts and the preparation method are the same as those of example 1.
Comparative example 3
The present comparative example provides an acoustic paint, which is different from example 1 only in that the polyurethane graphene-silica aerogel is replaced with the polyurethane-silica aerogel provided in preparation example 9, and the other components, the amounts and the preparation method are the same as those of example 1.
Comparative example 4
The present comparative example provides an acoustic paint, which is different from example 1 only in that the polyurethane graphene-silica aerogel is replaced with the silica aerogel provided in preparation example 10, and the other components, the amounts and the preparation method are the same as those of example 1.
Comparative example 5
The present comparative example provides an acoustic paint, which is different from example 1 only in that the polyurethane graphene-silica aerogel is replaced with hollow glass beads, and the other components, the amounts and the preparation method are the same as those of example 1.
Comparative example 6
This comparative example provides an acoustic paint, which is different from example 1 only in that the acoustic paint includes 5 parts of organic-inorganic hybrid emulsion, 45 parts of polyurethane graphene-silica aerogel, and the other components, amounts and preparation methods are the same as example 1.
Comparative example 7
This comparative example provides an acoustic paint, which is different from example 1 only in that the acoustic paint includes 35 parts of organic-inorganic hybrid emulsion, 15 parts of polyurethane graphene-silica aerogel, and the other components, amounts and preparation methods are the same as example 1.
Comparative example 8
This comparative example provides an acoustic paint, which is different from example 1 only in that the acoustic paint includes 50 parts of an organic-inorganic hybrid emulsion, does not include a polyurethane graphene-silica aerogel, and has the same other components, amounts, and preparation methods as example 1.
Performance testing
(1) And (3) antibacterial property: the test standard is HG/T3950-2007;
wherein, I stage: the antibacterial rate is more than or equal to 99 percent, and the grade II: the antibacterial rate is more than or equal to 90% and less than 99%, and the antibacterial rate is III: the antibacterial rate is less than 90 percent;
(2) Mildew resistance: the test standard is GB/T1741-2007;
wherein, the 0 level: about 50 times of the culture medium has no obvious mold growth;
level 1: mildew cannot be seen or is difficult to see by the naked eyes, but the mildew can be obviously seen under a magnifying glass;
and 2, stage: the mold growth can be seen by naked eyes, and the coverage area on the surface of the sample is 10-30%;
and 3, level: the mold growth can be seen by naked eyes, and the coverage area on the surface of the sample is 30-60%;
4, level: mildew is obviously seen by naked eyes, and the coverage area on the surface of the sample is more than 60 percent;
(3) Flame retardant rating: the test standard is GB 8624-2012;
(4) Sound absorption and noise reduction performance: the test standard is GB/T20247-2006 Acoustic reverberation chamber sound absorption measurement;
wherein, the larger the sound absorption coefficient is, the better the sound absorption and noise reduction performance is.
The specific test results are shown in table 1:
TABLE 1
| Antimicrobial grade | Mildew resistance rating | Flame retardant rating | Coefficient of sound absorption | |
| Example 1 | Class I | Grade 0 | A1 | 0.62 |
| Example 2 | Class I | Level 0 | A1 | 0.57 |
| Example 3 | Class I | Level 0 | A1 | 0.75 |
| Example 4 | Class I | Level 0 | A1 | 0.69 |
| Example 5 | Class II | Grade 0 | A1 | 0.63 |
| Example 6 | Class I | Level 0 | A2 | 0.5 |
| Example 7 | Class I | Grade 0 | A2 | 0.45 |
| Example 8 | Class I | Level 0 | A2 | 0.48 |
| Example 9 | Class I | Level 0 | A2 | 0.45 |
| Example 10 | Class III | Stage 2 | A2 | 0.43 |
| Example 11 | Class III | Stage 2 | A1 | 0.44 |
| Comparative example 1 | Class I | Level 0 | A2 | 0.40 |
| Comparative example 2 | Class I | Level 0 | B1 | 0.38 |
| Comparative example 3 | Class I | Level 0 | B1 | 0.4 |
| Comparative example 4 | Class I | Level 0 | B1 | 0.41 |
| Comparative example 5 | Class I | Grade 0 | B1 | 0.36 |
| Comparative example 6 | Class III | Stage 2 | A1 | 0.51 |
| Comparative example 7 | Class I | Level 0 | A2 | 0.46 |
| Comparative example 8 | Class I | Level 0 | B2 | 0.35 |
The sound-absorbing coating provided by the invention has the advantages that the hybrid emulsion with a specific content and the polyurethane graphene-silicon dioxide aerogel are compounded, so that the sound-absorbing coating has excellent sound-absorbing and noise-reducing functions, good antibacterial and mildewproof effects and high flame-retardant grade, and is environment-friendly without additionally adding an antibacterial agent and a flame retardant. From the examples 1 to 5, it can be seen that the sound-absorbing coating has an antibacterial grade of II or above, a mildew-proof grade of 0, an antibacterial rate of not less than 90%, and no obvious mildew growth; the flame retardant grade is high, reaches A1 grade, the sound absorption coefficient is 0.57-0.75, and the sound absorption and noise reduction function is excellent.
As can be seen from comparison between example 1 and examples 6 to 9, when the raw materials of the polyurethane graphene-silica aerogel are not in a specific ratio, the flame retardant grade of the sound-absorbing coating is reduced and the sound-absorbing effect is poor; as can be seen from comparison of example 1 with examples 10 and 11, the organic-inorganic hybrid emulsion is replaced with a normal odorless emulsion or has no microporous structure, and the sound-absorbing coating has poor antibacterial and antifungal effects, reduced flame retardant rating, and poor sound-absorbing effect; as can be seen from comparison between example 1 and comparative examples 1 to 5, the polyurethane graphene-silica aerogel is replaced by other aerogels or glass beads, the sound absorption effect of the sound absorption coating is poor, and the flame retardant grade is low; as can be seen from the comparison between example 1 and comparative examples 6 to 8, when the organic-inorganic hybrid emulsion and the polyurethane graphene-silica aerogel are not in a specific content or the polyurethane graphene-silica aerogel is absent, the flame retardant grade of the sound-absorbing coating is reduced and the sound-absorbing effect is poor.
In conclusion, the sound-absorbing coating provided by the invention is compounded with the polyurethane graphene-silicon dioxide aerogel through the hybrid emulsion with specific types and contents, so that the sound-absorbing coating has excellent sound-absorbing and noise-reducing functions, good antibacterial and mildewproof effects and high flame-retardant grade, does not need to be additionally added with an antibacterial agent and a flame retardant, and is safer and durable; the method has the advantages of no need of in-tank bactericide to create a non-allergic living environment, low cost, simple preparation process, contribution to large-scale production and environmental friendliness.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The sound-absorbing coating is characterized by comprising, by weight, 10-25 parts of hybrid emulsion and 20-40 parts of polyurethane graphene-silicon dioxide aerogel.
2. The sound absorbing coating of claim 1, wherein the hybrid emulsion comprises an organic-inorganic hybrid emulsion;
preferably, the organic-inorganic hybrid emulsion includes a hybrid emulsion having a microporous structure;
preferably, the pH value of the organic-inorganic hybrid emulsion is 11-12;
preferably, the organic-inorganic hybrid emulsion has a core-shell structure with an inorganic phase as a core and an organic phase as a shell;
preferably, the inorganic phase material in the organic-inorganic hybrid emulsion comprises at least one of silica, titanium dioxide, zinc oxide or calcium carbonate;
preferably, the organic phase material in the organic-inorganic hybrid emulsion comprises at least one of polyurethane, polyacrylate, polyaniline or polydimethylsiloxane.
3. The sound-absorbing coating material according to claim 1 or 2, wherein the raw materials of the polyurethane graphene-silica aerogel comprise polyurethane graphene and a silicon source;
preferably, the mass ratio of the polyurethane graphene to the silicon source is (0.5-2.5): 1;
preferably, the raw materials of the polyurethane graphene comprise polyisocyanate and hydroxylated graphene;
preferably, the mass ratio of the polyisocyanate to the hydroxylated graphene is (1-3): 1;
preferably, the polyisocyanate includes at least one of isophorone diisocyanate, toluene diisocyanate, diphenylmethane diisocyanate, dicyclohexylmethane diisocyanate, hexamethylene diisocyanate, or lysine diisocyanate.
4. The sound-absorbing paint according to any one of claims 1 to 3, further comprising 0.1 to 0.5 parts by weight of cellulose;
preferably, the cellulose comprises hydroxyethyl cellulose;
preferably, the sound-absorbing coating further includes 15 to 25 parts by weight of a first filler;
preferably, the first filler comprises at least one of kaolin, heavy calcium, talc or mica powder;
preferably, the first filler comprises a combination of kaolin and heavy calcium;
preferably, the mass ratio of the kaolin to the heavy calcium in the first filler is 1 (1.5-4.5).
5. The sound-absorbing coating material according to any one of claims 1 to 4, further comprising 0.4 to 1 part by weight of a dispersant;
preferably, the dispersant comprises a modified polyacrylic dispersant and/or a modified polycarboxylate dispersant;
preferably, the sound-absorbing coating further comprises 0.1-0.5 part of wetting agent by weight;
preferably, the wetting agent comprises at least one of polyoxyethylene alkylphenol ether, polyoxyethylene fatty alcohol ether, polyoxyethylene-polyoxypropylene block copolymer;
preferably, the sound-absorbing coating further comprises 0.1-0.5 part by weight of a defoaming agent;
preferably, the defoamer comprises a polysiloxane and/or a polyether modified polysiloxane.
6. The sound-absorbing coating material according to any one of claims 1 to 5, further comprising 0.05 to 2 parts by weight of a thickener;
preferably, the sound-absorbing coating further comprises 5 to 20 parts by weight of pigment and filler;
preferably, the pigment filler comprises titanium dioxide;
preferably, the sound-absorbing coating material has a solid content of 65 to 95%.
7. A method for preparing the sound-absorbing paint according to any one of claims 1 to 6, comprising:
and mixing the hybrid emulsion with the polyurethane graphene-silicon dioxide aerogel to obtain the sound-absorbing coating.
8. The method of claim 7, wherein the mixed material further comprises at least one of cellulose, a first filler, a dispersant, a wetting agent, a defoamer, a thickener, or a pigment-filler;
preferably, the mixing is carried out in a solvent;
preferably, the solvent comprises water.
9. The method of manufacturing according to claim 8, wherein the method of manufacturing the sound-absorbing paint includes:
(1) Mixing a solvent with optional cellulose, a dispersing agent, a wetting agent or a defoaming agent to obtain a dispersion liquid;
(2) Mixing the dispersion liquid obtained in the step (1) with optional pigment and/or filler to obtain a stable liquid;
(3) Mixing the stabilizing solution obtained in the step (2) with a hybrid emulsion, polyurethane graphene-silicon dioxide aerogel and an optional defoaming agent to obtain a primary product solution;
(4) Mixing the primary liquid obtained in the step (3) with an optional thickener and/or a solvent to obtain the sound-absorbing coating;
preferably, the mixing time of the step (2) is 20-40 min.
10. Use of a sound absorbing coating according to any one of claims 1 to 6 for sound absorption and noise reduction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210920396.6A CN115181489B (en) | 2022-08-02 | 2022-08-02 | Sound-absorbing coating and preparation method and application thereof |
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| CN116554741A (en) * | 2023-05-25 | 2023-08-08 | 广东嘉宝莉科技材料有限公司 | Emulsion paint capable of being rolled and coated once and preparation method thereof |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1369511A (en) * | 2001-02-12 | 2002-09-18 | 上海绿纳化工材料技术有限公司 | Process for preparing hybridized substance with core-shell structre from organic high-molecular material and nano inorganic material |
| CN102964956A (en) * | 2012-12-20 | 2013-03-13 | 上海滋普环保科技有限公司 | Environment-friendly antimicrobial odorless latex paint |
| CN103980771A (en) * | 2014-06-10 | 2014-08-13 | 马鞍山创宁新材料科技有限公司 | Nano modified water-base multifunctional sound-absorbing paint and preparation method thereof |
| CN105838164A (en) * | 2016-05-19 | 2016-08-10 | 惠州市彩田化工实业有限公司 | Aqueous nano-antibacterial sound absorption coating and preparation method thereof |
| CN106280578A (en) * | 2016-07-11 | 2017-01-04 | 国家纳米科学中心 | A kind of limbic function functionalized graphene, its preparation method and for preparing the purposes of anticorrosive paint |
| CN106590400A (en) * | 2016-11-10 | 2017-04-26 | 广东科迪新材料科技有限公司 | Graphene-modified waterborne conductive coating and preparation method thereof |
| WO2019027337A1 (en) * | 2017-08-04 | 2019-02-07 | Instytut Niskich Temperatur I Badan Strukturalnych Pan Im.W.Trzebiatowskiego | Stable graphene-silica composites and the method for manufacturing thereof |
| US20190153145A1 (en) * | 2015-10-27 | 2019-05-23 | Jinan Shengquan Group Share Holding Co., Ltd. | Composite polyurethane foam comprising graphene, processes for preraring the same use thereof |
| CN109912837A (en) * | 2019-03-18 | 2019-06-21 | 华南理工大学 | A kind of hydrophobic graphene aerogel coating flame retardant rigid polyurethane foam and preparation method thereof |
| CN110745835A (en) * | 2019-11-29 | 2020-02-04 | 福建六树网络科技有限公司 | Preparation method of silicon dioxide/graphene composite aerogel and composite aerogel obtained by preparation method |
| CN110833799A (en) * | 2019-11-04 | 2020-02-25 | 江苏一夫新材料产业技术研究院有限公司 | Graphene-elemental silicon composite aerogel and preparation method thereof |
| CN112457732A (en) * | 2020-11-17 | 2021-03-09 | 国佳新材湖北环保凝胶产业园有限公司 | Aerogel sound-absorbing noise-reducing heat-insulating coating and preparation method thereof |
| CN113122077A (en) * | 2021-04-30 | 2021-07-16 | 炫杰复合材料（上海）有限公司 | Sound-absorbing fireproof coating and preparation method thereof |
| CN113201170A (en) * | 2021-05-12 | 2021-08-03 | 慕思健康睡眠股份有限公司 | Graphene polyurethane composite sponge material with good anti-fouling performance and application thereof |
| CN113637110A (en) * | 2021-08-12 | 2021-11-12 | 河北三棵树涂料有限公司 | Hybrid emulsion, water-based inorganic coating prepared from hybrid emulsion and preparation method of water-based inorganic coating |
-
2022
- 2022-08-02 CN CN202210920396.6A patent/CN115181489B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1369511A (en) * | 2001-02-12 | 2002-09-18 | 上海绿纳化工材料技术有限公司 | Process for preparing hybridized substance with core-shell structre from organic high-molecular material and nano inorganic material |
| CN102964956A (en) * | 2012-12-20 | 2013-03-13 | 上海滋普环保科技有限公司 | Environment-friendly antimicrobial odorless latex paint |
| CN103980771A (en) * | 2014-06-10 | 2014-08-13 | 马鞍山创宁新材料科技有限公司 | Nano modified water-base multifunctional sound-absorbing paint and preparation method thereof |
| US20190153145A1 (en) * | 2015-10-27 | 2019-05-23 | Jinan Shengquan Group Share Holding Co., Ltd. | Composite polyurethane foam comprising graphene, processes for preraring the same use thereof |
| CN105838164A (en) * | 2016-05-19 | 2016-08-10 | 惠州市彩田化工实业有限公司 | Aqueous nano-antibacterial sound absorption coating and preparation method thereof |
| CN106280578A (en) * | 2016-07-11 | 2017-01-04 | 国家纳米科学中心 | A kind of limbic function functionalized graphene, its preparation method and for preparing the purposes of anticorrosive paint |
| CN106590400A (en) * | 2016-11-10 | 2017-04-26 | 广东科迪新材料科技有限公司 | Graphene-modified waterborne conductive coating and preparation method thereof |
| WO2019027337A1 (en) * | 2017-08-04 | 2019-02-07 | Instytut Niskich Temperatur I Badan Strukturalnych Pan Im.W.Trzebiatowskiego | Stable graphene-silica composites and the method for manufacturing thereof |
| CN109912837A (en) * | 2019-03-18 | 2019-06-21 | 华南理工大学 | A kind of hydrophobic graphene aerogel coating flame retardant rigid polyurethane foam and preparation method thereof |
| CN110833799A (en) * | 2019-11-04 | 2020-02-25 | 江苏一夫新材料产业技术研究院有限公司 | Graphene-elemental silicon composite aerogel and preparation method thereof |
| CN110745835A (en) * | 2019-11-29 | 2020-02-04 | 福建六树网络科技有限公司 | Preparation method of silicon dioxide/graphene composite aerogel and composite aerogel obtained by preparation method |
| CN112457732A (en) * | 2020-11-17 | 2021-03-09 | 国佳新材湖北环保凝胶产业园有限公司 | Aerogel sound-absorbing noise-reducing heat-insulating coating and preparation method thereof |
| CN113122077A (en) * | 2021-04-30 | 2021-07-16 | 炫杰复合材料（上海）有限公司 | Sound-absorbing fireproof coating and preparation method thereof |
| CN113201170A (en) * | 2021-05-12 | 2021-08-03 | 慕思健康睡眠股份有限公司 | Graphene polyurethane composite sponge material with good anti-fouling performance and application thereof |
| CN113637110A (en) * | 2021-08-12 | 2021-11-12 | 河北三棵树涂料有限公司 | Hybrid emulsion, water-based inorganic coating prepared from hybrid emulsion and preparation method of water-based inorganic coating |
Non-Patent Citations (2)
| Title |
|---|
| 李雯雯等: "氧化石墨烯复合气凝胶吸附油类污染应用的基础研究", vol. 41, no. 06, pages 1869 - 1879 * |
| 田骏;叶丹丹;罗梅杰;: "二氧化硅气凝胶/聚氨酯隔热材料的研究", no. 03, pages 96 - 100 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116554741A (en) * | 2023-05-25 | 2023-08-08 | 广东嘉宝莉科技材料有限公司 | Emulsion paint capable of being rolled and coated once and preparation method thereof |
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