CN118185540B - High-water-resistance polyurethane adhesive and preparation method and application thereof - Google Patents
High-water-resistance polyurethane adhesive and preparation method and application thereof Download PDFInfo
- Publication number
- CN118185540B CN118185540B CN202410375269.1A CN202410375269A CN118185540B CN 118185540 B CN118185540 B CN 118185540B CN 202410375269 A CN202410375269 A CN 202410375269A CN 118185540 B CN118185540 B CN 118185540B
- Authority
- CN
- China
- Prior art keywords
- component
- cellulose
- regenerated cellulose
- modified regenerated
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 62
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 62
- 239000004814 polyurethane Substances 0.000 title claims abstract description 62
- 239000000853 adhesive Substances 0.000 title claims abstract description 59
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000004627 regenerated cellulose Substances 0.000 claims abstract description 90
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 40
- 229920005862 polyol Polymers 0.000 claims abstract description 37
- 150000003077 polyols Chemical class 0.000 claims abstract description 36
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 34
- 239000003054 catalyst Substances 0.000 claims abstract description 30
- 239000005543 nano-size silicon particle Substances 0.000 claims abstract description 20
- 239000002981 blocking agent Substances 0.000 claims abstract description 12
- 239000004014 plasticizer Substances 0.000 claims abstract description 11
- 230000002745 absorbent Effects 0.000 claims abstract description 5
- 239000002250 absorbent Substances 0.000 claims abstract description 5
- 229920001730 Moisture cure polyurethane Polymers 0.000 claims abstract description 3
- 229920002678 cellulose Polymers 0.000 claims description 67
- 239000001913 cellulose Substances 0.000 claims description 67
- 238000003756 stirring Methods 0.000 claims description 27
- 238000001816 cooling Methods 0.000 claims description 24
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 22
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 22
- 241001330002 Bambuseae Species 0.000 claims description 22
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 22
- 239000011425 bamboo Substances 0.000 claims description 22
- 239000002808 molecular sieve Substances 0.000 claims description 22
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 22
- 238000001035 drying Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 18
- 239000000835 fiber Substances 0.000 claims description 17
- 239000012948 isocyanate Substances 0.000 claims description 13
- 150000002513 isocyanates Chemical class 0.000 claims description 13
- 239000012188 paraffin wax Substances 0.000 claims description 13
- 238000006116 polymerization reaction Methods 0.000 claims description 13
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 12
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 claims description 11
- 229910001431 copper ion Inorganic materials 0.000 claims description 11
- 239000002994 raw material Substances 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 10
- -1 aromatic polyol Chemical class 0.000 claims description 6
- 229920000742 Cotton Polymers 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 4
- 229920001131 Pulp (paper) Polymers 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- BKUSIKGSPSFQAC-RRKCRQDMSA-N 2'-deoxyinosine-5'-diphosphate Chemical compound O1[C@H](CO[P@@](O)(=O)OP(O)(O)=O)[C@@H](O)C[C@@H]1N1C(NC=NC2=O)=C2N=C1 BKUSIKGSPSFQAC-RRKCRQDMSA-N 0.000 claims description 2
- 241000609240 Ambelania acida Species 0.000 claims description 2
- 235000014676 Phragmites communis Nutrition 0.000 claims description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 2
- 229910000323 aluminium silicate Inorganic materials 0.000 claims description 2
- 150000001412 amines Chemical class 0.000 claims description 2
- 239000010905 bagasse Substances 0.000 claims description 2
- 229910052797 bismuth Inorganic materials 0.000 claims description 2
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 2
- 239000010893 paper waste Substances 0.000 claims description 2
- 229920000058 polyacrylate Polymers 0.000 claims description 2
- 229920005906 polyester polyol Polymers 0.000 claims description 2
- 229920000098 polyolefin Polymers 0.000 claims description 2
- 239000010902 straw Substances 0.000 claims description 2
- 239000011701 zinc Substances 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- UGACIEPFGXRWCH-UHFFFAOYSA-N [Si].[Ti] Chemical compound [Si].[Ti] UGACIEPFGXRWCH-UHFFFAOYSA-N 0.000 claims 1
- 230000015271 coagulation Effects 0.000 claims 1
- 238000005345 coagulation Methods 0.000 claims 1
- 238000007872 degassing Methods 0.000 claims 1
- 239000002244 precipitate Substances 0.000 claims 1
- 229910000077 silane Inorganic materials 0.000 claims 1
- 238000009849 vacuum degassing Methods 0.000 claims 1
- 230000000903 blocking effect Effects 0.000 abstract description 19
- 235000012239 silicon dioxide Nutrition 0.000 abstract description 18
- 239000006096 absorbing agent Substances 0.000 abstract description 4
- 239000000243 solution Substances 0.000 description 49
- 238000002156 mixing Methods 0.000 description 17
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 12
- 238000009924 canning Methods 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 11
- 238000007789 sealing Methods 0.000 description 11
- 230000002194 synthesizing effect Effects 0.000 description 11
- 230000000694 effects Effects 0.000 description 10
- 238000004321 preservation Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 230000004048 modification Effects 0.000 description 8
- 238000012986 modification Methods 0.000 description 8
- 238000007792 addition Methods 0.000 description 7
- 239000007787 solid Substances 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 6
- 229910021529 ammonia Inorganic materials 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 238000001914 filtration Methods 0.000 description 6
- 239000008103 glucose Substances 0.000 description 6
- 238000009775 high-speed stirring Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 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 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 2
- 239000004359 castor oil Substances 0.000 description 2
- 235000019438 castor oil Nutrition 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- KXDHJXZQYSOELW-UHFFFAOYSA-N Carbamic acid Chemical group NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004970 Chain extender Substances 0.000 description 1
- 229920002121 Hydroxyl-terminated polybutadiene Polymers 0.000 description 1
- QORUGOXNWQUALA-UHFFFAOYSA-N N=C=O.N=C=O.N=C=O.C1=CC=C(C(C2=CC=CC=C2)C2=CC=CC=C2)C=C1 Chemical compound N=C=O.N=C=O.N=C=O.C1=CC=C(C(C2=CC=CC=C2)C2=CC=CC=C2)C=C1 QORUGOXNWQUALA-UHFFFAOYSA-N 0.000 description 1
- 235000019482 Palm oil Nutrition 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 125000002791 glucosyl group Chemical group C1([C@H](O)[C@@H](O)[C@H](O)[C@H](O1)CO)* 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000002540 palm oil Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F19/00—Integrated devices, or assemblies of multiple devices, comprising at least one photovoltaic cell covered by group H10F10/00, e.g. photovoltaic modules
- H10F19/80—Encapsulations or containers for integrated devices, or assemblies of multiple devices, having photovoltaic cells
- H10F19/85—Protective back sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The application relates to the field of polyurethane adhesive preparation, in particular to a high water resistance polyurethane adhesive, a preparation method and application thereof, wherein the Gao Zushui polyurethane adhesive comprises a component A and a component B; the component A comprises 30-50% of polyol, 20-40% of plasticizer, 1-5% of silane coupling agent, 5-15% of water-blocking agent and 5-10% of water-absorbing agent according to mass percentage; wherein the water blocking agent comprises nano silicon dioxide and modified regenerated cellulose; the component B comprises polyurethane prepolymer and a catalyst, wherein the catalyst accounts for 0.5-1% of the total mass of the component B. The application adopts the silane coupling agent with water blocking effect and the water absorbent to combine, and the modified regenerated cellulose and the gas phase nano silicon dioxide fill the gaps in the molecule, thereby preparing the polyurethane adhesive with high water blocking effect.
Description
Technical Field
The invention relates to the field of polyurethane adhesive preparation, in particular to a high-water-resistance polyurethane adhesive, and a preparation method and application thereof.
Background
The polyurethane adhesive is used as an adhesive containing carbamate groups (-NHCOO-) or isocyanate groups (-NCO) in molecular chains, has the characteristics of good activity, low pollution or no pollution, incombustibility, excellent impact resistance and the like, and can be used as an adhesive in the fields of chemical materials and the like. However, in the practical application process, the polyurethane adhesive is inevitably used in an outdoor environment, especially in overcast and rainy weather, rainwater can permeate the polyurethane adhesive to enter an object to be bonded, so that the service performance of the object is affected. Therefore, the conventional polyurethane adhesive needs to be modified to improve the water resistance and the adhesive capability of polyurethane.
In recent years, polyurethane adhesives have become a hot spot for research in the adhesive field because of their excellent chemical stability, viscoelasticity and excellent impact resistance.
For example: chinese patent literature with publication number of CN116554823A and publication day of 2023, 8 and 8, named "a waterproof polyurethane adhesive and preparation method thereof" discloses a preparation method of the waterproof polyurethane adhesive. In the technical scheme disclosed in the patent document, fluorine is introduced, so that the hydrolysis resistance of polyurethane molecular chains can be improved, an intermediate structure is introduced to endow polyurethane with excellent flame retardant property, and a benzene ring structure of triphenylmethane triisocyanate is introduced to endow polyurethane with carbon forming property, so that the intermediate is cooperated, and the flame retardant effect is improved.
However, it should be noted that the technical solution disclosed in this patent document can achieve water resistance, fluorine is a hydrophilic element, and cannot achieve a waterproof effect, and in addition, has problems such as poor mechanical properties and weak adhesion, and cannot be applied to an outdoor environment.
Also for example: the main components of the high water-resistant polyurethane waterproof paint disclosed in the Chinese patent literature with the publication number of CN202210084152 and the publication date of 2022 and the publication date of 04 and 29 are solid asphalt, silane-terminated polybutadiene, hydroxyl-terminated polybutadiene, polyol chain extender, liquid filler, catalyst, zinc stearate, hypercalcium powder and shi song powder, and the waterproof paint has good water resistance, but has poor adhesive force, is likely to have the risk of coating falling off in the use process and cannot be suitable for the direction of an adhesive.
Based on the above, there is a lack of an effective method in the prior art to improve the water-blocking property and the bonding strength, so that the modification treatment of the conventional polyurethane adhesive is needed to improve the water-blocking property and the bonding capability of the polyurethane.
Disclosure of Invention
The invention aims to overcome the defects of weak water blocking performance and weak binding force of the polyurethane adhesive in the prior art, and provides a high water blocking polyurethane adhesive, a preparation method and application thereof, and aims to overcome the defects.
In order to achieve the aim of the invention, the invention is realized by the following technical scheme:
in a first aspect, the present invention provides a high water blocking polyurethane adhesive comprising a component a and a component B;
the component A comprises 30-50% of polyol, 20-40% of plasticizer, 1-5% of silane coupling agent, 5-15% of water-blocking agent and 5-10% of water-absorbing agent according to mass percentage;
Wherein the water blocking agent comprises nano silicon dioxide and modified regenerated cellulose;
The regenerated cellulose comprises a cellulose main chain, wherein the cellulose main chain comprises hydroxyl groups and silane chain segments chemically grafted to the cellulose main chain, and the cellulose main chain also comprises copper ions coordinated with the hydroxyl groups;
the component B comprises polyurethane prepolymer and a catalyst, wherein the catalyst accounts for 0.5-1% of the total mass of the component B.
The high water-blocking polyurethane adhesive consists of the component A and the component B, and only needs to be fully mixed in the use process, so that environmental conditions are not needed to be considered, and a good water-blocking effect can be achieved after the high water-blocking polyurethane adhesive is cured.
In the component A, the silane coupling agent and the water blocking agent have good water blocking effect. The silane coupling agent can improve the surface hydrophilicity of the polyurethane structural adhesive, so that the polyurethane structural adhesive has good hydrophobicity, and the addition of the silane coupling agent can greatly improve the bonding stability between polyurethane and a substrate, so that the bonding strength is improved from the side face.
In addition, the water blocking agent comprises nano silicon dioxide and modified regenerated cellulose, and the nano silicon dioxide has extremely small particle size, so that micropores and gaps in the adhesive can be filled, the compactness of the colloid is effectively improved, and the possibility of water passing is reduced. Meanwhile, the nano silicon dioxide has larger specific surface area and surface activity, can be fully contacted and combined with other adhesive components, and enhances the overall consistency and water resistance of the adhesive.
In addition, cellulose contains a large number of hydroxyl groups in its molecular structure, and the presence of these hydroxyl groups makes conventional cellulose generally have good hydrophilicity. According to the application, through targeted modification of the cellulose structure and chemical grafting of a certain amount of silane chain segments on the cellulose main chain, the hydrophilic performance of cellulose is changed, and the penetration speed of moisture in the adhesive is reduced. And a part of hydroxyl groups reserved on the cellulose main chain can participate in the synthesis of polyurethane, so that the crosslinking density of the polyurethane adhesive after curing can be greatly improved, and the adhesive property of the adhesive is improved. Therefore, the polyurethane adhesive has better mechanical property, stronger tensile strength and high hardness at the same time of firmer and more reliable adhesive. In addition, the addition of the silane chain segment in the modified regenerated cellulose can enhance the thermal stability of the adhesive, so that the adhesive can still maintain good adhesive property in a high-temperature environment, which is important for the high-temperature environment required by the solar cell.
In addition, the inventor also found that the water-blocking performance of the cellulose can be improved to a certain extent after a certain amount of copper ions are coordinated on the cellulose main chain. One explanation is that bonding may occur between the copper ions and hydroxyl or other reactive groups of cellulose, resulting in the copper ions being bound to the cellulose into a complex structure. The composite structure can form a layer of protective film on the surface, so that the surface hydrophilicity of cellulose is reduced, and meanwhile, the penetration of water molecules is reduced, thereby improving the water blocking performance of the modified regenerated cellulose. When the copper ions are thoroughly washed, the cellulose does not contain copper ions or a complex thereof, and the modified structure and characteristics of the cellulose surface may be changed, resulting in a decrease in water blocking performance. This suggests that the specific interaction between copper ions and the modified regenerated cellulose plays an important role in the water blocking properties of the modified regenerated cellulose.
Besides the water blocking agent, the application fully utilizes the water absorption of the molecular sieve, which can absorb the water vapor entering the cured polyurethane and prevent the water vapor from further entering the deep layer of the polyurethane, thereby further improving the water blocking performance of the polyurethane adhesive.
Finally, the resin selected by the application has good cohesiveness, can be firmly adhered to the solar cell backboard, has stronger adhesion after solidification, and can be even applied to more places and fields.
Preferably, the addition amount of the modified regenerated cellulose is not more than 5% of the total mass of the A component and not more than 50% of the total mass of the nano silica.
In the present application, the inventors found that the addition amount of the modified regenerated cellulose has a significant effect on the performance of the overall polyurethane. When the addition amount of the modified regenerated cellulose in the component A is too high, the modified regenerated cellulose is difficult to uniformly disperse in the component A, so that a part of the modified regenerated cellulose is agglomerated, and the agglomerated regenerated cellulose still contains a large amount of hydrophilic hydroxyl groups after the polyurethane is solidified because the hydroxyl groups in the molecule of the agglomerated regenerated cellulose are not completely consumed, so that water vapor can easily enter the polyurethane, and the water blocking performance of the polyurethane is reduced.
In addition, too high an addition amount of the modified regenerated cellulose may cause a great increase in viscosity of the a component, resulting in problems of difficulty in mixing and non-uniformity in mixing in the subsequent mixing process with the B component, thereby reducing the overall performance of the polyurethane after final curing.
Preferably, the method for preparing the modified regenerated cellulose comprises the following steps:
(S.1) dissolving a cellulose raw material in a cuprammonium solution to obtain a cellulose solution;
(S.2) adding a silane coupling agent into the cellulose solution, and stirring for reaction to obtain a modified regenerated cellulose solution;
And (S.3) dropwise adding the modified regenerated cellulose solution into a coagulating bath under the stirring condition, so that the modified regenerated cellulose is solidified and separated out, and drying the separated modified regenerated cellulose to obtain the modified regenerated cellulose.
In the preparation process of the modified regenerated cellulose, the cellulose raw material is firstly complexed with the cuprammonium ion, so that the hydrogen bond connected with each other in the cellulose can be broken, the cellulose can be dissolved in cuprammonium solution, and the hydroxyl groups which are originally connected together through the hydrogen bond are completely exposed, so that the silane coupling agent is ensured to fully contact with the cellulose for reaction, the grafting uniformity of the silane coupling agent on a cellulose main chain is ensured, and the modification effect and the quality of a finished product are improved.
Preferably, the cellulose raw material is any one or a combination of a plurality of reed fiber, bamboo cellulose, broadleaf pulp, needle pulp, bleached chemimechanical wood pulp, bleached chemical straw pulp, bleached chemical bagasse pulp, cotton pulp and white waste paper elution ink pulp.
Preferably, the cellulose raw material has a polymerization degree of 500 to 1000.
The inventors of the present application found that the degree of polymerization of the cellulose raw material has an important influence on the water blocking effect of the water blocking agent. The degree of polymerization of cellulose in this range indicates that the molecular chain of cellulose is relatively long and contains a large number of glucose units. The longer molecular chain structure is beneficial to the cellulose to react with other substances, such as copper ions or silane coupling agents, so as to realize the modification process of the cellulose. The polymerization degree of the cellulose raw material is 500-1000, which shows that the molecular chain length is moderate, and the cellulose raw material can provide proper molecular structure and reactivity in the modification process, thereby being beneficial to the realization of the interaction between cellulose and other components and the modification effect.
Preferably, the polyol is one or more of polyester polyol, aromatic polyol, polyolefin polyol, polyacrylate polyol, castor oil, modified castor oil, palm oil and soybean oil with molecular weight of 1000-2000 and functionality of 2-3.
Preferably, the water absorbing agent comprises one or more of aluminosilicate molecular sieve, titanium silicalite molecular sieve, ZSM-35 molecular sieve, ZSM-5 molecular sieve, CR-500 molecular sieve.
Preferably, the plasticizer comprises a mixture of one or more of paraffin wax, asphalt, plasticizer DOP and plasticizer DIDP;
The catalyst comprises one or a mixture of more of amine catalysts, organic zinc catalysts, organic bismuth catalysts and titanate catalysts;
The silane coupling agent is one or more of KH-560, KH-550, KH-570, KH-590, KH-902, KH-792, A-151, A-187, A-174, A-1891, A-1100 and A-1120.
In a second aspect, the present invention also provides a process for preparing the Gao Zushui polyurethane adhesive, the process comprising the steps of:
(1) Mixing and defoaming 30-50% of polyol, 20-40% of plasticizer, 1-5% of silane coupling agent, 5-15% of water-blocking agent and 5-10% of water-absorbing agent according to mass percent to obtain a component A;
(2) Dehydrating 60-70% of isocyanate according to mass percent, reacting with 30-40% of polyol for 2-3 h, adding a catalyst accounting for 0.5-1% of the total mass of the component B, continuously reacting for 30-60min, and cooling to obtain the component B;
(3) Mixing the component A and the component B according to the proportion of 100: and (3) mixing the components in a proportion of 10-30 by vacuum defoaming to obtain the Gao Zushui polyurethane adhesive.
In a third aspect, the invention also provides an application of Gao Zushui polyurethane adhesive in solar cell back panel adhesion.
Therefore, compared with the prior art, the invention has the following beneficial effects:
(1) The polyurethane adhesive with high water blocking effect is prepared by combining a silane coupling agent with water blocking effect and a water absorbent, and filling the intramolecular gaps with modified regenerated cellulose and gas-phase nano silicon dioxide. In the use process, the operation is simple, and the paint is nontoxic and pollution-free;
(2) The polyurethane adhesive has good adhesion capability, can be firmly adhered to a solar cell backboard, has stronger adhesion force after solidification, and is even applied to more places and fields;
(3) In addition, the polyurethane adhesive has better mechanical property, stronger tensile strength and high hardness.
Detailed Description
The invention is further described below in connection with specific embodiments. Those of ordinary skill in the art will be able to implement the invention based on these descriptions. In addition, the embodiments of the present invention referred to in the following description are typically only some, but not all, embodiments of the present invention. Therefore, all other embodiments, which can be made by one of ordinary skill in the art without undue burden, are intended to be within the scope of the present invention, based on the embodiments of the present invention.
[ Preparation of modified regenerated cellulose ]
Modified regenerated cellulose a: the method comprises the steps of selecting bamboo fiber with the polymerization degree of 700, dissolving the bamboo fiber in a cuprammonium solution (wherein the cuprammonium solution contains 2.5wt% of copper, 8.5wt% of ammonia and 0.7wt% of glucose), preparing a cellulose solution with the solid content of 8wt% of bamboo cellulose, then adding a silane coupling agent KH-560 with the mass of 20wt% of the bamboo fiber into the cellulose solution, stirring and reacting for 3 hours at 50 ℃ under the stirring condition to obtain a modified regenerated cellulose solution, dropwise adding the modified regenerated cellulose solution into a 90% ethanol solution under the high-speed stirring condition of 5000rpm, solidifying and separating out the modified regenerated cellulose, filtering, drying the separated modified regenerated cellulose at 80 ℃, and obtaining the modified regenerated cellulose A.
Modified regenerated cellulose B: and (3) dissolving cotton pulp with the polymerization degree of 500 in a cuprammonium solution (wherein the copper content in the cuprammonium solution is 3wt%, the ammonia content is 7.5wt%, and the glucose content is 0.4 wt%) to prepare a cellulose solution with the cotton pulp solid content of 6.8wt%, then adding a silane coupling agent KH-550 with the cotton pulp mass of 20wt% into the cellulose solution, stirring and reacting for 3 hours at 50 ℃ under stirring conditions to obtain a modified regenerated cellulose solution, dropwise adding the modified regenerated cellulose solution into a 90% ethanol solution under high-speed stirring conditions of 5000rpm, solidifying and separating out the modified regenerated cellulose, filtering, and drying the separated modified regenerated cellulose at 80 ℃ to obtain the modified regenerated cellulose B.
Modified regenerated cellulose C: the method comprises the steps of selecting bamboo fiber with the polymerization degree of 1000, dissolving the bamboo fiber in a cuprammonium solution (wherein the cuprammonium solution contains 4.3wt% of copper, 7.9wt% of ammonia and 0.55wt% of glucose), preparing a cellulose solution with the solid content of 7.8wt% of bamboo cellulose, then adding a silane coupling agent KH-550 with the mass of 25wt% of the bamboo fiber into the cellulose solution, stirring and reacting for 3 hours at 50 ℃ under stirring conditions to obtain a modified regenerated cellulose solution, dropwise adding the modified regenerated cellulose solution into a 90% ethanol solution under high-speed stirring conditions of 5000rpm, solidifying and separating out the modified regenerated cellulose, filtering, and drying the separated modified regenerated cellulose at 80 ℃ to obtain the modified regenerated cellulose C.
Modified regenerated cellulose D: the method comprises the steps of selecting bamboo fiber with the polymerization degree of 300, dissolving the bamboo fiber in a cuprammonium solution (wherein the cuprammonium solution contains 2.2wt% of copper, 7.5wt% of ammonia and 0.25wt% of glucose), preparing a cellulose solution with the solid content of 6.4wt% of bamboo cellulose, then adding a silane coupling agent KH-550 with the mass of 20wt% of the bamboo fiber into the cellulose solution, stirring and reacting for 3 hours at 50 ℃ under stirring conditions to obtain a modified regenerated cellulose solution, dropwise adding the modified regenerated cellulose solution into a 90% ethanol solution under high-speed stirring conditions of 5000rpm, solidifying and separating out the modified regenerated cellulose, filtering, and drying the separated modified regenerated cellulose at 80 ℃ to obtain the modified regenerated cellulose D.
Modified regenerated cellulose E: the method comprises the steps of selecting bamboo fiber with the polymerization degree of 1500, dissolving the bamboo fiber in a cuprammonium solution (wherein the cuprammonium solution contains 2.8wt% of copper, 8.5wt% of ammonia and 0.3wt% of glucose), preparing a cellulose solution with the solid content of 6.9wt% of bamboo cellulose, then adding a silane coupling agent KH-550 with the mass of 20wt% of the bamboo fiber into the cellulose solution, stirring and reacting for 3 hours at 50 ℃ under stirring conditions to obtain a modified regenerated cellulose solution, dropwise adding the modified regenerated cellulose solution into a 90% ethanol solution under high-speed stirring conditions of 5000rpm, solidifying and separating out the modified regenerated cellulose, filtering, and drying the separated modified regenerated cellulose at 80 ℃ to obtain the modified regenerated cellulose E.
Modified regenerated cellulose F: the method comprises the steps of selecting bamboo fiber with the polymerization degree of 700, dissolving the bamboo fiber in a cuprammonium solution (wherein the copper content in the cuprammonium solution is 2.5wt%, the ammonia content is 8.5wt%, and the glucose content is 0.7 wt%) to prepare a cellulose solution with the solid content of 8wt% of bamboo cellulose, then adding a silane coupling agent KH-560 with the mass of 20wt% of the bamboo fiber into the cellulose solution, stirring and reacting for 3 hours at 50 ℃ under stirring conditions to obtain a modified regenerated cellulose solution, dropwise adding the modified regenerated cellulose solution into a 90% ethanol solution under high-speed stirring conditions of 5000rpm to solidify and separate out the modified regenerated cellulose, filtering, transferring the separated modified regenerated cellulose into a 5% hydrochloric acid aqueous solution, washing to remove residual cuprammonium complex, and drying at 80 ℃ after washing with clear water to obtain the modified regenerated cellulose F.
Example 1
The component A is prepared by the following steps: 40 parts of polyol DDL-1000, 36 parts of paraffin wax, 4 parts of silane coupling agent, 5 parts of modified regenerated cellulose A, 6 parts of nano silicon dioxide and 9 parts of ZSM-35 molecular sieve are mixed, and defoamed by a vacuum stirring deaerator to obtain a component A.
And synthesizing a prepolymer component B, namely dehydrating 60 parts of isocyanate liquefied MDI at 120 ℃ for 2 hours, cooling, adding 39.5 parts of polyol DDL-1000 for reacting for 2 hours, finally adding 0.5 part of catalyst for reacting for 30 minutes, vacuum defoaming for 10 minutes, cooling to room temperature, canning and sealing for preservation.
Step S3: mixing the component A and the component B according to the proportion of 100:20, and observing the surface drying time and the curing time.
Example 2
The component A is prepared by the following steps: 40 parts of polyol DDL-1000, 36 parts of paraffin wax, 4 parts of silane coupling agent, 5 parts of modified regenerated cellulose B, 6 parts of nano silicon dioxide and 9 parts of ZSM-35 molecular sieve are mixed, and defoamed by a vacuum stirring deaerator to obtain a component A.
And synthesizing a prepolymer component B, namely dehydrating 60 parts of isocyanate liquefied MDI at 120 ℃ for 2 hours, cooling, adding 39.5 parts of polyol DDL-1000 for reacting for 2 hours, finally adding 0.5 part of catalyst for reacting for 30 minutes, vacuum defoaming for 10 minutes, cooling to room temperature, canning and sealing for preservation.
Step S3: mixing the component A and the component B according to the proportion of 100:20, and observing the surface drying time and the curing time.
Example 3
The component A is prepared by the following steps: 40 parts of polyol DDL-1000, 36 parts of paraffin wax, 4 parts of silane coupling agent, 5 parts of modified regenerated cellulose C, 6 parts of nano silicon dioxide and 9 parts of ZSM-35 molecular sieve are mixed, and defoamed by a vacuum stirring deaerator to obtain a component A.
And synthesizing a prepolymer component B, namely dehydrating 60 parts of isocyanate liquefied MDI at 120 ℃ for 2 hours, cooling, adding 39.5 parts of polyol DDL-1000 for reacting for 2 hours, finally adding 0.5 part of catalyst for reacting for 30 minutes, vacuum defoaming for 10 minutes, cooling to room temperature, canning and sealing for preservation.
Step S3: mixing the component A and the component B according to the proportion of 100:20, and observing the surface drying time and the curing time.
Example 4
The component A is prepared by the following steps: 30 parts of polyol EP280, 40 parts of paraffin wax, 5 parts of silane coupling agent, 3 parts of modified regenerated cellulose A, 12 parts of nano silicon dioxide and 10 parts of ZSM-35 molecular sieve are mixed, and defoamed by a vacuum stirring deaerator to obtain a component A.
And synthesizing a prepolymer component B, namely dehydrating 70 parts of isocyanate liquefied MDI at 120 ℃ for 3 hours, cooling, adding 29 parts of polyol EP280 for reaction for 2 hours, finally adding 1 part of catalyst for reaction for 60 minutes, vacuum defoaming for 10 minutes, cooling to room temperature, canning and sealing for storage.
Step S3: mixing the component A and the component B according to the proportion of 100:10, and observing the surface drying time and the curing time.
Example 5
The component A is prepared by the following steps: 50 parts of polyol EP280, 20 parts of paraffin wax, 5 parts of silane coupling agent, 5 parts of modified regenerated cellulose A,10 parts of nano silicon dioxide and 10 parts of ZSM-35 molecular sieve are mixed, and defoamed by a vacuum stirring deaerator to obtain a component A.
And synthesizing a prepolymer component B, namely dehydrating 70 parts of isocyanate liquefied MDI-2020 at 120 ℃ for 3 hours, cooling, adding 29 parts of polyol EP280 for 2 hours, adding 1 part of catalyst, reacting for 60 minutes, vacuum defoaming for 10 minutes, cooling to room temperature, canning and sealing for storage.
Step S3: mixing the component A and the component B according to the proportion of 100:10, and observing the surface drying time and the curing time.
Example 6
The component A is prepared by the following steps: 50 parts of polyol EP280, 39 parts of paraffin wax, 1 part of silane coupling agent, 2 parts of modified regenerated cellulose A, 3 parts of nano silicon dioxide and 5 parts of ZSM-35 molecular sieve are mixed, and defoamed by a vacuum stirring deaerator to obtain a component A.
And synthesizing a prepolymer component B, namely liquefying isocyanate to MDI-2020 by 70 parts, dehydrating for 3 hours at 120 ℃, cooling, adding polyol DDL-1000 by 29 parts for reacting for 2 hours, adding catalyst by 1 part, reacting for 60 minutes, vacuum defoaming for 10 minutes, cooling to room temperature, canning and sealing for preservation.
Step S3: mixing the component A and the component B according to the proportion of 100:10, and observing the surface drying time and the curing time.
Comparative example 1
The component A is prepared by the following steps: 40 parts of polyol DDL-1000, 36 parts of paraffin wax, 4 parts of silane coupling agent, 5 parts of modified regenerated cellulose D, 6 parts of nano silicon dioxide and 9 parts of ZSM-35 molecular sieve are mixed, and defoamed by a vacuum stirring deaerator to obtain a component A.
And synthesizing a prepolymer component B, namely dehydrating 60 parts of isocyanate liquefied MDI at 120 ℃ for 2 hours, cooling, adding 39.5 parts of polyol DDL-1000 for reacting for 2 hours, finally adding 0.5 part of catalyst for reacting for 30 minutes, vacuum defoaming for 10 minutes, cooling to room temperature, canning and sealing for preservation.
Step S3: mixing the component A and the component B according to the proportion of 100:20, and observing the surface drying time and the curing time.
Comparative example 2
The component A is prepared by the following steps: 40 parts of polyol DDL-1000, 36 parts of paraffin wax, 4 parts of silane coupling agent, 5 parts of modified regenerated cellulose E, 6 parts of nano silicon dioxide and 9 parts of ZSM-35 molecular sieve are mixed, and defoamed by a vacuum stirring deaerator to obtain a component A.
And synthesizing a prepolymer component B, namely dehydrating 60 parts of isocyanate liquefied MDI at 120 ℃ for 2 hours, cooling, adding 39.5 parts of polyol DDL-1000 for reacting for 2 hours, finally adding 0.5 part of catalyst for reacting for 30 minutes, vacuum defoaming for 10 minutes, cooling to room temperature, canning and sealing for preservation.
Step S3: mixing the component A and the component B according to the proportion of 100:20, and observing the surface drying time and the curing time.
Comparative example 3
The component A is prepared by the following steps: 40 parts of polyol DDL-1000, 36 parts of paraffin wax, 4 parts of silane coupling agent, 5 parts of modified regenerated cellulose F, 6 parts of nano silicon dioxide and 9 parts of ZSM-35 molecular sieve are mixed, and defoamed by a vacuum stirring deaerator to obtain a component A.
And synthesizing a prepolymer component B, namely dehydrating 60 parts of isocyanate liquefied MDI at 120 ℃ for 2 hours, cooling, adding 39.5 parts of polyol DDL-1000 for reacting for 2 hours, finally adding 0.5 part of catalyst for reacting for 30 minutes, vacuum defoaming for 10 minutes, cooling to room temperature, canning and sealing for preservation.
Step S3: mixing the component A and the component B according to the proportion of 100:20, and observing the surface drying time and the curing time.
Comparative example 4
The component A is prepared by the following steps: 40 parts of polyol DDL-1000, 36 parts of paraffin wax, 4 parts of silane coupling agent, 10 parts of modified regenerated cellulose A, 5 parts of nano silicon dioxide and 9 parts of ZSM-35 molecular sieve are mixed, and defoamed by a vacuum stirring deaerator to obtain a component A.
And synthesizing a prepolymer component B, namely dehydrating 60 parts of isocyanate liquefied MDI at 120 ℃ for 2 hours, cooling, adding 39.5 parts of polyol DDL-1000 for reacting for 2 hours, finally adding 0.5 part of catalyst for reacting for 30 minutes, vacuum defoaming for 10 minutes, cooling to room temperature, canning and sealing for preservation.
Step S3: mixing the component A and the component B according to the proportion of 100:20, and observing the surface drying time and the curing time.
Comparative example 5
The component A is prepared by the following steps: 40 parts of polyol DDL-1000, 36 parts of paraffin wax, 4 parts of silane coupling agent, 5 parts of nano silicon dioxide and 9 parts of ZSM-35 molecular sieve are mixed, and defoamed by a vacuum stirring deaerator to obtain a component A.
And synthesizing a prepolymer component B, namely dehydrating 60 parts of isocyanate liquefied MDI at 120 ℃ for 2 hours, cooling, adding 39.5 parts of polyol DDL-1000 for reacting for 2 hours, finally adding 0.5 part of catalyst for reacting for 30 minutes, vacuum defoaming for 10 minutes, cooling to room temperature, canning and sealing for preservation.
Step S3: mixing the component A and the component B according to the proportion of 100:20, and observing the surface drying time and the curing time.
The high water blocking polyurethane adhesives prepared in examples 1 to 6 and comparative examples 1 to 5 were tested and the test results are shown in table 1 below.
TABLE 1
As can be seen from the comparison of examples 1 to 6 and comparative examples 1 to 5, the high water-blocking polyurethane adhesive of the present invention has excellent water-blocking performance and also has good aging resistance.
Comparing examples 1-3 with comparative examples 1-2, we have found that the molecular weight of the modified regenerated cellulose has a certain effect on the polyurethane adhesive properties. When the degree of polymerization of cellulose is low, it causes a decrease in the tensile strength of the polyurethane adhesive after curing. When the polymerization degree of cellulose is high, the coupling effect of the cellulose and other substances in the modification process can be influenced, so that the water blocking performance of the cellulose is also reduced to a certain extent.
Comparing example 1 with comparative example 3, we found that the mechanical properties of the polyurethane adhesive were not significantly changed after the copper ions in the modified regenerated cellulose were removed, however, the water blocking properties were somewhat reduced, indicating that the specific interaction between the copper ions and the modified regenerated cellulose had a certain effect on the water blocking properties of the modified regenerated cellulose.
Comparing example 1 with comparative example 4, it was found that when the modified regenerated cellulose is added excessively, it is difficult to uniformly disperse the modified regenerated cellulose in the a-component, and a part of the modified regenerated cellulose is agglomerated, and the agglomerated regenerated cellulose still contains a large amount of hydrophilic hydroxyl groups after curing because the hydroxyl groups in the molecule are not completely consumed, so that water vapor can easily enter the polyurethane, thereby reducing the water blocking property.
Comparing example 1 with comparative example 5, we found that the overall performance of the polyurethane adhesive was significantly reduced when the yeast was not added with the modified regenerated cellulose.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions, without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410375269.1A CN118185540B (en) | 2024-03-29 | 2024-03-29 | High-water-resistance polyurethane adhesive and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410375269.1A CN118185540B (en) | 2024-03-29 | 2024-03-29 | High-water-resistance polyurethane adhesive and preparation method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN118185540A CN118185540A (en) | 2024-06-14 |
| CN118185540B true CN118185540B (en) | 2024-11-08 |
Family
ID=91397903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410375269.1A Active CN118185540B (en) | 2024-03-29 | 2024-03-29 | High-water-resistance polyurethane adhesive and preparation method and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118185540B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113773782A (en) * | 2021-11-01 | 2021-12-10 | 电子科技大学 | Preparation of a high temperature resistant and hydrolysis resistant polyurethane potting compound |
| CN114933882A (en) * | 2022-06-14 | 2022-08-23 | 广东菊兰新型材料科技有限公司 | Durable sealant with ultrahigh elongation, high adhesion and high toughness and preparation method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006006656A1 (en) * | 2005-08-26 | 2007-03-01 | Degussa Ag | Silane-containing binder for composites |
| JP5885028B2 (en) * | 2012-03-23 | 2016-03-15 | Dic株式会社 | Moisture curable polyurethane hot melt composition |
| KR101871139B1 (en) * | 2018-01-04 | 2018-07-20 | 박철원 | Polyurethane structural adhesive composition and process for producing the same |
-
2024
- 2024-03-29 CN CN202410375269.1A patent/CN118185540B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113773782A (en) * | 2021-11-01 | 2021-12-10 | 电子科技大学 | Preparation of a high temperature resistant and hydrolysis resistant polyurethane potting compound |
| CN114933882A (en) * | 2022-06-14 | 2022-08-23 | 广东菊兰新型材料科技有限公司 | Durable sealant with ultrahigh elongation, high adhesion and high toughness and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN118185540A (en) | 2024-06-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Bledzki et al. | Properties and modification methods for vegetable fibers for natural fiber composites | |
| CN112322254A (en) | Biomass aldehyde-free adhesive and preparation and application methods thereof | |
| CN106189475B (en) | A kind of nano wearproof coated filler and preparation method thereof | |
| CN105111724A (en) | High-water-permeability TPU (thermoplastic polyurethane) film and preparation method thereof | |
| CN118061628B (en) | High-wear-resistance plastic floor and preparation method thereof | |
| CN110437551B (en) | Self-repairing environment-friendly rubber material and preparation method thereof | |
| CN117488565A (en) | A high-viscosity waterproof graphene composite waterproof membrane and its preparation method | |
| CN111423727A (en) | Elastic silicon cotton structure body and preparation method thereof | |
| CN118185540B (en) | High-water-resistance polyurethane adhesive and preparation method and application thereof | |
| CN116623472B (en) | Antibacterial negative-oxygen type decorative paper and preparation method thereof | |
| CN109504130B (en) | Preparation of nano calcium carbonate for silane-terminated polyurethane sealant | |
| JP2021155491A5 (en) | ||
| CN115584237A (en) | A kind of biomass wood adhesive and its preparation method and application | |
| CN111675959B (en) | Preparation method of exposed polyurethane waterproof coating | |
| KR101856501B1 (en) | Fibrillated cellulose filament preparation method thereof | |
| CN115477914A (en) | Moisture-proof adhesive and preparation method thereof | |
| CN116948132A (en) | A modified basalt fiber/polyurethane vibration and noise reduction material with excellent comprehensive properties and its preparation method | |
| CN113881386B (en) | Composite hot melt adhesive and composite board using same | |
| CN112961638A (en) | Fast-curing high-strength bi-component MS glue and preparation method thereof | |
| CN108587483A (en) | A kind of shuttlecock antibacterial adhesive and preparation method thereof | |
| CN114574142A (en) | Moisture-proof high-strength sliding plate binder | |
| CN118493978B (en) | A waterproof and breathable polyester fiber fabric and its production process | |
| CN118599456B (en) | Environmentally friendly urea-formaldehyde resin glue and preparation method thereof | |
| CN118906583B (en) | Low-resistant Wen Huamu plywood for cryogenic liquid storage cabin and preparation method thereof | |
| CN118876515A (en) | A thin down-lined PUR bonded composite fabric and its processing technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |