CN114231239A - Single-component reactive polyurethane hot melt adhesive for solar backboard and preparation method thereof - Google Patents
Single-component reactive polyurethane hot melt adhesive for solar backboard and preparation method thereof Download PDFInfo
- Publication number
- CN114231239A CN114231239A CN202111661411.1A CN202111661411A CN114231239A CN 114231239 A CN114231239 A CN 114231239A CN 202111661411 A CN202111661411 A CN 202111661411A CN 114231239 A CN114231239 A CN 114231239A
- Authority
- CN
- China
- Prior art keywords
- parts
- hot melt
- melt adhesive
- polyurethane hot
- mpa
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- 239000004831 Hot glue Substances 0.000 title claims abstract description 64
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 62
- 239000004814 polyurethane Substances 0.000 title claims abstract description 62
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 150000002009 diols Chemical class 0.000 claims abstract description 50
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000012948 isocyanate Substances 0.000 claims abstract description 20
- 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 abstract description 19
- 229920001610 polycaprolactone Polymers 0.000 claims abstract description 19
- 239000004632 polycaprolactone Substances 0.000 claims abstract description 19
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 18
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 18
- 229920000728 polyester Polymers 0.000 claims abstract description 18
- 229920000570 polyether Polymers 0.000 claims abstract description 18
- 239000001361 adipic acid Substances 0.000 claims abstract description 16
- 235000011037 adipic acid Nutrition 0.000 claims abstract description 16
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 16
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 16
- KXBFLNPZHXDQLV-UHFFFAOYSA-N [cyclohexyl(diisocyanato)methyl]cyclohexane Chemical compound C1CCCCC1C(N=C=O)(N=C=O)C1CCCCC1 KXBFLNPZHXDQLV-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000002318 adhesion promoter Substances 0.000 claims abstract description 13
- 239000003054 catalyst Substances 0.000 claims abstract description 13
- 239000003381 stabilizer Substances 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims description 44
- 238000006757 chemical reactions by type Methods 0.000 claims description 43
- 238000003756 stirring Methods 0.000 claims description 40
- 239000002250 absorbent Substances 0.000 claims description 20
- 230000002745 absorbent Effects 0.000 claims description 20
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 16
- 229920000909 polytetrahydrofuran Polymers 0.000 claims description 13
- 239000002253 acid Substances 0.000 claims description 11
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 11
- -1 poly adipic acid-neopentyl glycol ester diol Chemical class 0.000 claims description 10
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 8
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 8
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 8
- WOXXJEVNDJOOLV-UHFFFAOYSA-N ethenyl-tris(2-methoxyethoxy)silane Chemical compound COCCO[Si](OCCOC)(OCCOC)C=C WOXXJEVNDJOOLV-UHFFFAOYSA-N 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 8
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 claims description 6
- FBUKVWPVBMHYJY-UHFFFAOYSA-N nonanoic acid Chemical compound CCCCCCCCC(O)=O FBUKVWPVBMHYJY-UHFFFAOYSA-N 0.000 claims description 6
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 claims description 6
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 4
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 3
- QSRJVOOOWGXUDY-UHFFFAOYSA-N 2-[2-[2-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propanoyloxy]ethoxy]ethoxy]ethyl 3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C)=CC(CCC(=O)OCCOCCOCCOC(=O)CCC=2C=C(C(O)=C(C)C=2)C(C)(C)C)=C1 QSRJVOOOWGXUDY-UHFFFAOYSA-N 0.000 claims description 3
- XDLMVUHYZWKMMD-UHFFFAOYSA-N 3-trimethoxysilylpropyl 2-methylprop-2-enoate Chemical compound CO[Si](OC)(OC)CCCOC(=O)C(C)=C XDLMVUHYZWKMMD-UHFFFAOYSA-N 0.000 claims description 3
- 239000005711 Benzoic acid Substances 0.000 claims description 3
- KWYHDKDOAIKMQN-UHFFFAOYSA-N N,N,N',N'-tetramethylethylenediamine Chemical compound CN(C)CCN(C)C KWYHDKDOAIKMQN-UHFFFAOYSA-N 0.000 claims description 3
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 3
- 235000010233 benzoic acid Nutrition 0.000 claims description 3
- PASDCCFISLVPSO-UHFFFAOYSA-N benzoyl chloride Chemical compound ClC(=O)C1=CC=CC=C1 PASDCCFISLVPSO-UHFFFAOYSA-N 0.000 claims description 3
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 3
- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 claims description 3
- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical compound [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 claims description 3
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- ZMSQJSMSLXVTKN-UHFFFAOYSA-N 4-[2-(2-morpholin-4-ylethoxy)ethyl]morpholine Chemical compound C1COCCN1CCOCCN1CCOCC1 ZMSQJSMSLXVTKN-UHFFFAOYSA-N 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 21
- 230000008569 process Effects 0.000 abstract description 18
- 238000004383 yellowing Methods 0.000 abstract description 13
- 230000036541 health Effects 0.000 abstract description 8
- 230000007062 hydrolysis Effects 0.000 abstract description 8
- 238000006460 hydrolysis reaction Methods 0.000 abstract description 8
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 9
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 238000004806 packaging method and process Methods 0.000 description 6
- 238000009461 vacuum packaging Methods 0.000 description 6
- 230000032683 aging Effects 0.000 description 5
- 239000002131 composite material Substances 0.000 description 5
- 238000001514 detection method Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 description 4
- 239000005020 polyethylene terephthalate Substances 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- 239000005643 Pelargonic acid Substances 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 229920006267 polyester film Polymers 0.000 description 2
- 239000012855 volatile organic compound Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920005906 polyester polyol Polymers 0.000 description 1
- 229920003225 polyurethane elastomer Polymers 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
- C08G18/12—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
- C08G18/4018—Mixtures of compounds of group C08G18/42 with compounds of group C08G18/48
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4236—Polycondensates having carboxylic or carbonic ester groups in the main chain containing only aliphatic groups
- C08G18/4238—Polycondensates having carboxylic or carbonic ester groups in the main chain containing only aliphatic groups derived from dicarboxylic acids and dialcohols
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4266—Polycondensates having carboxylic or carbonic ester groups in the main chain prepared from hydroxycarboxylic acids and/or lactones
- C08G18/4269—Lactones
- C08G18/4277—Caprolactone and/or substituted caprolactone
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4854—Polyethers containing oxyalkylene groups having four carbon atoms in the alkylene group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/721—Two or more polyisocyanates not provided for in one single group C08G18/73 - C08G18/80
- C08G18/724—Combination of aromatic polyisocyanates with (cyclo)aliphatic polyisocyanates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/75—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
- C08G18/758—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing two or more cycloaliphatic rings
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
- C08G18/7671—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
-
- 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
Abstract
The invention discloses a single-component reactive polyurethane hot melt adhesive for a solar backboard and a preparation method thereof, wherein the hot melt adhesive is mainly prepared from the following raw materials in parts by weight: 10-35 parts of isocyanate, 25-65 parts of polycaprolactone diol, 10-40 parts of polyether diol, 5-25 parts of adipic acid polyester diol, 0.1-5 parts of ultraviolet absorber, 0.05-0.5 part of antioxidant, 0.01-0.1 part of stabilizer, 0.01-0.5 part of catalyst and 0.1-5 parts of adhesion promoter; wherein, the isocyanate adopts diphenylmethane-4, 4-diisocyanate and dicyclohexylmethane diisocyanate. The invention has high transparency, good yellowing resistance, weather resistance, hydrolysis resistance and bonding strength, can better meet the requirements of the solar cell back plate, has simple process in the bonding process and reduces the harm to the environment and the health of human bodies.
Description
Technical Field
The invention relates to the field of reactive polyurethane hot melt adhesives, in particular to a single-component reactive polyurethane hot melt adhesive for a solar backboard and a preparation method thereof.
Background
With the improvement of environmental protection requirements, the application of various clean energy sources is more and more extensive. Solar energy is an important clean energy source. The solar back plate is positioned on the back of the solar cell, plays a role in protecting and supporting the cell piece, and is required to have reliable insulativity, water resistance and aging resistance. The composite solar cell back plate is prepared by adhering fluorine-containing films to the inner side and the outer side of a middle layer of PET (polyethylene terephthalate) polyester film through an adhesive. The traditional composite solar cell backboard composite process is to coat double-component solvent cold glue composite glue on one surface of a film material, the process of the composite production process is complicated, the solvent is volatilized in a large amount in the drying process, the process is not friendly to the atmospheric environment and is very unfavorable to the body health of workers, the organic solvent is volatile, flammable and explosive, serious hidden danger is brought to safety production, and the drying process is high in energy consumption, low in efficiency, large in occupied area and high in production cost. In addition, since the transparent solar cell back sheet can improve the power generation efficiency of the solar cell, the adhesive for lamination preferably has high transparency and good weather resistance and yellowing resistance.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The invention aims to provide a single-component reaction type polyurethane hot melt adhesive for a solar backboard and a preparation method thereof, and aims to solve the technical problems in the prior art. The invention has high transparency, good yellowing resistance, weather resistance, hydrolysis resistance and bonding strength, can better meet the requirements of the solar cell back plate, has simple process and high working efficiency in the bonding process, and reduces the harm to the environment and the health of human bodies.
The purpose of the invention is realized by the following technical scheme:
a single-component reaction type polyurethane hot melt adhesive for a solar backboard is mainly prepared from the following raw materials in parts by weight: 10-35 parts of isocyanate, 25-65 parts of polycaprolactone diol, 10-40 parts of polyether diol, 5-25 parts of adipic acid polyester diol, 0.1-5 parts of ultraviolet absorber, 0.05-0.5 part of antioxidant, 0.01-0.1 part of stabilizer, 0.01-0.5 part of catalyst and 0.1-5 parts of adhesion promoter; wherein, the isocyanate adopts diphenylmethane-4, 4-diisocyanate and dicyclohexylmethane diisocyanate.
Preferably, the polyether glycol is polytetramethylene ether glycol, and the relative molecular weight is 1000-5000.
Preferably, the hydroxyl value of the polycaprolactone diol is 20-80 mgKOH/g, and the acid value is 0.1-2 mgKOH/g.
Preferably, the adipic acid polyester diol is poly adipic acid-neopentyl glycol ester diol, the hydroxyl value is 20-80 mgKOH/g, and the acid value is 0.1-2 mgKOH/g.
Preferably, the ultraviolet absorbent is at least one of ultraviolet absorbent UV-327, ultraviolet absorbent UV-531 and ultraviolet absorbent UV-1130.
Preferably, the antioxidant is at least one of antioxidant 1076, antioxidant 1035, antioxidant 245 and antioxidant 1010.
Preferably, the stabilizer is at least one of phosphoric acid, benzoyl chloride, benzoic acid and pelargonic acid.
Preferably, the catalyst is at least one of dibutyltin dilaurate, stannous octoate, tetramethylethylenediamine, triethylenediamine and dimorpholinodiethyl ether.
Preferably, the adhesion promoter is at least one of vinyl tri (2-methoxyethoxy) silane, 3-methacryloxypropyl trimethoxysilane, 3-aminopropyltriethoxysilane, and 3-glycidoxypropyltrimethoxysilane.
A preparation method of a single-component reaction type polyurethane hot melt adhesive for a solar backboard is used for preparing the single-component reaction type polyurethane hot melt adhesive for the solar backboard, and comprises the following steps:
step 1, weighing the following raw materials in parts by weight: 10-35 parts of isocyanate, 25-65 parts of polycaprolactone diol, 10-40 parts of polyether diol, 5-25 parts of adipic acid polyester diol, 0.1-5 parts of ultraviolet absorber, 0.05-0.5 part of antioxidant, 0.01-0.1 part of stabilizer, 0.01-0.5 part of catalyst and 0.1-5 parts of adhesion promoter; wherein, the isocyanate adopts diphenylmethane-4, 4-diisocyanate and dicyclohexylmethane diisocyanate;
step 2, adding the polycaprolactone diol, the polyether diol, the adipic acid polyester diol, the ultraviolet absorbent, the antioxidant and the stabilizer into a reaction kettle, controlling the reaction temperature to be between 100 and 140 ℃, keeping the pressure to be between-0.085 and-0.095 MPa, and stirring and dehydrating for 1 to 4 hours;
step 3, stopping heating, adding the dicyclohexylmethane diisocyanate into the reaction kettle when the temperature in the reaction kettle is reduced to 90-100 ℃, stirring and reacting for 1-2 hours at the temperature of 90-100 ℃, and keeping the vacuum degree at-0.06 MPa to-0.095 MPa;
step 4, adding the diphenylmethane-4, 4-diisocyanate into the reaction kettle, stirring and reacting for 1-2 hours at the temperature of 90-100 ℃, and keeping the vacuum degree between-0.06 MPa and-0.095 MPa;
step 5, simultaneously adding the adhesion promoter and the catalyst into the reaction kettle, stirring and reacting for 30-50 minutes at 90-100 ℃, and keeping the vacuum degree at-0.08 MPa to-0.095 MPa;
and step 6, closing stirring, defoaming for 10-20 min, filtering and discharging to obtain the single-component reaction type polyurethane hot melt adhesive for the solar backboard.
Compared with the prior art, the raw material matching system adopted by the invention has good compatibility, and simultaneously two isocyanates of diphenylmethane-4, 4-diisocyanate and dicyclohexylmethane diisocyanate are adopted to be matched for use, so that the benzene ring content in the system is reduced, and in addition, the special polyether diol and the special polyester diol are adopted to be matched for use according to a specific proportion, so that the prepared single-component reaction type polyurethane hot melt adhesive not only has high transparency and good yellowing resistance, weather resistance, hydrolysis resistance and bonding strength, can better meet the requirements of solar cell back plates, but also has a curing effect, simple process in the bonding process, high working efficiency and reduced harm to the environment and the health of human bodies.
Detailed Description
The technical scheme in the embodiment of the invention is clearly and completely described below; it is to be understood that the described embodiments are merely exemplary of the invention, and are not intended to limit the invention to the particular forms disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The terms that may be used herein are first described as follows:
the terms "comprising," "including," "containing," "having," or other similar terms of meaning should be construed as non-exclusive inclusions. For example: including a feature (e.g., material, component, ingredient, carrier, formulation, material, dimension, part, component, mechanism, device, process, procedure, method, reaction condition, processing condition, parameter, algorithm, signal, data, product, or article of manufacture), is to be construed as including not only the particular feature explicitly listed but also other features not explicitly listed as such which are known in the art.
The term "consisting of … …" is meant to exclude any technical feature elements not explicitly listed. If used in a claim, the term shall render the claim closed except for the inclusion of the technical features that are expressly listed except for the conventional impurities associated therewith. If the term occurs in only one clause of the claims, it is defined only to the elements explicitly recited in that clause, and elements recited in other clauses are not excluded from the overall claims.
The term "parts by weight" is intended to indicate the relationship of mass proportions between the various components, for example: if the X component is described as X parts by weight and the Y component is described as Y parts by weight, the mass ratio of the X component to the Y component is represented as X: Y; 1 part by weight may represent any mass, for example: 1 part by weight may be expressed as 1kg or 3.1415926 kg. The sum of the parts by weight of all components is not necessarily 100 parts and may be greater than 100 parts, less than 100 parts or equal to 100 parts. Parts, ratios and percentages described herein are by mass unless otherwise indicated.
When concentrations, temperatures, pressures, dimensions, or other parameters are expressed as ranges of values, the ranges are to be understood as specifically disclosing all ranges formed from any pair of upper, lower, and preferred values within the range, regardless of whether ranges are explicitly recited; for example, if a numerical range of "2 ~ 8" is recited, then the numerical range should be interpreted to include ranges of "2 ~ 7", "2 ~ 6", "5 ~ 7", "3 ~ 4 and 6 ~ 7", "3 ~ 5 and 7", "2 and 5 ~ 7", and the like. Unless otherwise indicated, the numerical ranges recited herein include both the endpoints thereof and all integers and fractions within the numerical range.
The single-component reactive polyurethane hot melt adhesive for the solar back panel and the preparation method thereof provided by the invention are described in detail below. Details which are not described in detail in the embodiments of the invention belong to the prior art which is known to the person skilled in the art. Those not specifically mentioned in the examples of the present invention were carried out according to the conventional conditions in the art or conditions suggested by the manufacturer. The reagents or instruments used in the examples of the present invention are not specified by manufacturers, and are all conventional products available by commercial purchase.
The invention provides a single-component reaction type polyurethane hot melt adhesive for a solar backboard, which is mainly prepared from the following raw materials in parts by weight: 10-35 parts of isocyanate, 25-65 parts of polycaprolactone diol, 10-40 parts of polyether diol, 5-25 parts of adipic acid polyester diol, 0.1-5 parts of ultraviolet absorber, 0.05-0.5 part of antioxidant, 0.01-0.1 part of stabilizer, 0.01-0.5 part of catalyst and 0.1-5 parts of adhesion promoter; the isocyanate adopts diphenylmethane-4, 4-diisocyanate and dicyclohexylmethane diisocyanate.
Specifically, the single-component reaction type polyurethane hot melt adhesive for the solar back panel can comprise the following embodiments:
(1) the polyether glycol is polytetramethylene ether glycol, and the relative molecular weight of the polyether glycol is 1000-5000.
(2) The hydroxyl value of the polycaprolactone diol is 20-80 mgKOH/g, and the acid value is 0.1-2 mgKOH/g.
(3) The adipic acid polyester diol is poly adipic acid-neopentyl glycol ester diol, the hydroxyl value is 20-80 mgKOH/g, and the acid value is 0.1-2 mgKOH/g.
(4) The ultraviolet absorbent is at least one of ultraviolet absorbent UV-327, ultraviolet absorbent UV-531 and ultraviolet absorbent UV-1130.
(5) The antioxidant is at least one of antioxidant 1076, antioxidant 1035, antioxidant 245 and antioxidant 1010.
(6) The stabilizer is at least one of phosphoric acid, benzoyl chloride, benzoic acid and pelargonic acid.
(7) The catalyst is at least one of dibutyltin dilaurate, stannous octoate, tetramethylethylenediamine, triethylenediamine and dimorpholinyl diethyl ether.
(8) The adhesion promoter is at least one of vinyl tri (2-methoxyethoxy) silane, 3-methacryloxypropyl trimethoxy silane, 3-aminopropyl triethoxy silane and 3-glycidoxypropyl trimethoxy silane.
Further, the invention also provides a preparation method of the single-component reaction type polyurethane hot melt adhesive for the solar back panel, which is used for preparing the single-component reaction type polyurethane hot melt adhesive for the solar back panel and comprises the following steps:
step 1, weighing the following raw materials in parts by weight: 10-35 parts of isocyanate, 25-65 parts of polycaprolactone diol, 10-40 parts of polyether diol, 5-25 parts of adipic acid polyester diol, 0.1-5 parts of ultraviolet absorber, 0.05-0.5 part of antioxidant, 0.01-0.1 part of stabilizer, 0.01-0.5 part of catalyst and 0.1-5 parts of adhesion promoter; wherein, the isocyanate adopts diphenylmethane-4, 4-diisocyanate and dicyclohexylmethane diisocyanate.
And 2, adding the polycaprolactone diol, the polyether diol, the adipic acid polyester diol, the ultraviolet absorbent, the antioxidant and the stabilizer into a reaction kettle, controlling the reaction temperature to be between 100 and 140 ℃, keeping the pressure to be between-0.085 and-0.095 MPa, and stirring and dehydrating for 1 to 4 hours.
And 3, stopping heating, adding the dicyclohexylmethane diisocyanate into the reaction kettle when the temperature in the reaction kettle is reduced to 90-100 ℃, stirring and reacting for 1-2 hours at the temperature of 90-100 ℃, and keeping the vacuum degree between-0.06 MPa and-0.095 MPa.
And 4, adding the diphenylmethane-4, 4-diisocyanate into the reaction kettle, stirring and reacting for 1-2 hours at the temperature of 90-100 ℃, and keeping the vacuum degree between-0.06 MPa and-0.095 MPa.
And 5, simultaneously adding the adhesion promoter and the catalyst into the reaction kettle, stirring and reacting for 30-50 minutes at 90-100 ℃, and keeping the vacuum degree at-0.08 MPa to-0.095 MPa.
And step 6, closing stirring, defoaming for 10-20 min, filtering, discharging, and carrying out vacuum packaging or nitrogen packaging to obtain the single-component reactive polyurethane hot melt adhesive for the solar backboard.
Compared with the prior art, the single-component reaction type polyurethane hot melt adhesive for the solar backboard and the preparation method thereof provided by the invention at least have the following advantages:
(1) the raw materials in the raw material formula have good system compatibility, so that the prepared single-component reaction type polyurethane hot melt adhesive for the solar backboard has high transparency, and can better meet the use requirement of the solar battery backboard.
(2) The inventor finds that: the isocyanate simply uses aliphatic isocyanate or alicyclic isocyanate to prepare the single-component reaction type polyurethane hot melt adhesive, so that the prepared single-component reaction type polyurethane hot melt adhesive has the problems of slow curing, poor curing and lower strength after curing, and the isocyanate simply uses diphenylmethane-4, 4-diisocyanate to prepare the single-component reaction type polyurethane hot melt adhesive, contains a large number of benzene ring structures, so that the prepared single-component reaction type polyurethane hot melt adhesive has poor later-stage yellowing resistance, and the invention simultaneously adopts the matching use of the diphenylmethane-4, 4-diisocyanate and dicyclohexylmethane diisocyanate to reduce the benzene ring content in the system, so that the prepared single-component reaction type polyurethane hot melt adhesive has good yellowing resistance and good bonding strength, meanwhile, the prepared single-component reactive polyurethane hot melt adhesive can be ensured to be normally cured, and a good curing effect can be achieved, so that the requirement of the solar cell back plate can be better met.
(3) In the preparation process, the isocyanate is added step by step (namely, dicyclohexylmethane diisocyanate is added firstly to react for 1-2 hours, and diphenylmethane-4, 4-diisocyanate is added to react for 1-2 hours), so that the cohesive force of the prepared single-component reaction type polyurethane hot melt adhesive can be enhanced, the initial adhesion and the adhesion of the prepared single-component reaction type polyurethane hot melt adhesive can be increased, and the adhesion requirement of a solar cell backboard can be better met.
(4) The polyether diol selected by the invention is polytetramethylene ether glycol (PTMG), the molecular arrangement of the polytetramethylene ether glycol is compact, the density is high, and unsaturated bonds are not contained, so that the polyether diol has aging resistance; the ether bonds of the polytetramethylene ether glycol are straight chain alkyl with 4 carbon atoms, the alkyl with even number of carbon atoms are mutually closely arranged, the attraction among molecules is large, so the polyurethane elastomer (PTMG type elastomer) synthesized by PTMG has higher modulus and strength; therefore, the single-component reaction type polyurethane hot melt adhesive is prepared by adopting the polytetramethylene ether glycol, so that the adhesive layer body of the cured single-component reaction type polyurethane hot melt adhesive has higher modulus and strength, and has excellent hydrolysis resistance, wear resistance, mildew resistance, oil resistance and aging resistance, and particularly has outstanding hydrolysis resistance. Meanwhile, the polyester diol adopted by the invention is mainly polycaprolactone diol and secondarily matched with the adipic acid polyester diol for use, the polycaprolactone diol has the characteristics of low chroma and narrow high-purity molecular weight distribution, and the polyurethane hot melt adhesive prepared from the polycaprolactone diol has better temperature resistance and hydrolysis resistance than the adipic acid polyester polyol; according to the invention, the special polyether diol and the special polyester diol are matched according to a specific proportion, so that the prepared single-component reactive polyurethane hot melt adhesive has good weather resistance, and can meet the requirements of solar cell back plates; particularly, when polytetramethylene ether glycol with the relative molecular weight of 1000-5000 and polycaprolactone diol with the hydroxyl value of 20-80 mgKOH/g and the acid value of 0.1-2 mgKOH/g and adipic acid polyester diol with the hydroxyl value of 20-80 mgKOH/g and the acid value of 0.1-2 mgKOH/g are matched according to a specific proportion for use, the prepared one-component reactive polyurethane hot melt adhesive has more excellent weather resistance.
(5) The single-component reaction type polyurethane hot melt adhesive for the solar backboard, which is prepared by the invention, has a simple process in the bonding process, can improve the working efficiency and quality control, and reduces the harm to the environment and the health of human bodies.
(6) The invention relates to a single-component reaction type polyurethane hot melt adhesive which has the advantages of no solvent, low VOC (volatile organic compound) and the like, and the gluing process of the single-component reaction type polyurethane hot melt adhesive is simple in process and easy to operate, a large amount of solvent is not volatilized in the drying process, the adhesive is friendly to the atmospheric environment, the adverse effect on the body health of workers is avoided, the energy consumption is low, the efficiency is high, the occupied area is small, the production cost is low, no potential safety hazard is caused, and the problem that the organic solvent type hot melt adhesive can bring serious potential safety hazard to safety production is effectively solved.
In conclusion, the embodiment of the invention has high transparency, good yellowing resistance, weather resistance, hydrolysis resistance and bonding strength, can better meet the requirements of the solar cell back plate, has simple process and high working efficiency in the bonding process, and reduces the harm to the environment and the health of human bodies.
In order to more clearly show the technical scheme and the technical effects provided by the invention, the following detailed description of the single-component reactive polyurethane hot melt adhesive for the solar back panel and the preparation method thereof provided by the embodiment of the invention are provided by specific embodiments.
The starting materials used in the following examples are first described as follows:
PTMG-1000: polytetramethylene ether glycol having a molecular weight of 1000;
PTMG-2000: polytetramethylene ether glycol having a molecular weight of 2000;
NPG-3000: poly adipic acid-neopentyl glycol ester diol with molecular weight of 3000, hydroxyl value of 37.4mgKOH/g, acid value of 0.1 mgKOH/g;
PCL-2000: polycaprolactone dihydric alcohol with molecular weight of 2000, with hydroxyl value of 56.1mgKOH/g and acid value of 0.1 mgKOH/g;
PCL-3000: polycaprolactone diol with molecular weight of 3000 has hydroxyl value of 37.4mgKOH/g and acid value of 0.1 mgKOH/g;
HMDI: dicyclohexylmethane diisocyanate;
MDI-100: diphenylmethane diisocyanate.
Example 1
The preparation method of the single-component reaction type polyurethane hot melt adhesive for the solar backboard comprises the following steps:
step A1, adding 10 kg of PTMG-1000, 20 kg of PTMG-2000, 0.2 kg of ultraviolet absorbent UV-327, 0.1 kg of antioxidant 1010, 22 kg of NPG-3000, 32 kg of PCL-3000 and 0.02 kg of phosphoric acid into a reaction kettle, reacting at the temperature of 100-140 ℃, keeping the pressure between-0.085 MPa and-0.095 MPa, and stirring and dehydrating for 2 hours.
And A2, stopping heating, adding 8 kg of HMDI into the reaction kettle when the temperature in the reaction kettle is reduced to 90-100 ℃, stirring and reacting for 2 hours at the temperature of 90-100 ℃, and keeping the vacuum degree between-0.06 MPa and-0.095 MPa.
And A3, adding 7.5 kg of diphenylmethane-4, 4-diisocyanate into the reaction kettle, stirring and reacting for 1 hour at the temperature of 90-100 ℃, and keeping the vacuum degree between-0.06 MPa and-0.095 MPa.
And A4, simultaneously adding 0.4 kg of vinyl tri (2-methoxyethoxy) silane and 0.1 kg of dimorpholinyl diethyl ether into the reaction kettle, stirring and reacting for 30-50 minutes at the temperature of 90-100 ℃, and keeping the vacuum degree at-0.08 MPa to-0.095 MPa.
And A5, closing stirring, defoaming for 10-20 min, filtering, discharging, and carrying out vacuum packaging or nitrogen packaging to obtain the single-component reaction type polyurethane hot melt adhesive for the solar backboard.
Example 2
The preparation method of the single-component reaction type polyurethane hot melt adhesive for the solar backboard comprises the following steps:
and step B1, adding 10 kg of PTMG-1000, 10 kg of PTMG-2000, 0.2 kg of ultraviolet absorbent UV-327, 0.1 kg of antioxidant 1010, 10 kg of NPG-3000, 42 kg of PCL-3000, 12 kg of PCL-2000 and 0.02 kg of phosphoric acid into a reaction kettle, reacting at the temperature of 100-140 ℃, keeping the pressure between-0.085 MPa and-0.095 MPa, and stirring and dehydrating for 2 hours.
And B2, stopping heating, adding 8 kg of HMDI into the reaction kettle when the temperature in the reaction kettle is reduced to 90-100 ℃, stirring and reacting for 2 hours at the temperature of 90-100 ℃, and keeping the vacuum degree between-0.06 MPa and-0.095 MPa.
And step B3, adding 7.5 kg of diphenylmethane-4, 4-diisocyanate into the reaction kettle, stirring and reacting for 1 hour at the temperature of 90-100 ℃, and keeping the vacuum degree between-0.06 MPa and-0.095 MPa.
And step B4, simultaneously adding 0.4 kg of vinyl tri (2-methoxyethoxy) silane and 0.1 kg of dimorpholinyl diethyl ether into the reaction kettle, stirring and reacting for 30-50 minutes at the temperature of 90-100 ℃, and keeping the vacuum degree at-0.08 MPa to-0.095 MPa.
And step B5, closing stirring, defoaming for 10-20 min, filtering, discharging, and carrying out vacuum packaging or nitrogen packaging to obtain the single-component reaction type polyurethane hot melt adhesive for the solar backboard.
Comparative example 1
The preparation method of the single-component reaction type polyurethane hot melt adhesive comprises the following steps:
step a1, adding 10 kg of PTMG-1000, 20 kg of PTMG-2000, 0.2 kg of ultraviolet absorbent UV-327, 0.1 kg of antioxidant 1010, 22 kg of NPG-3000, 32 kg of PCL-3000 and 0.02 kg of phosphoric acid into a reaction kettle, reacting at the temperature of 100-140 ℃, keeping the pressure between-0.085 MPa and-0.095 MPa, and stirring and dehydrating for 2 hours.
And a2, stopping heating, adding 8 kg of MDI-100 into the reaction kettle when the temperature in the reaction kettle is reduced to 90-100 ℃, stirring and reacting for 2 hours at the temperature of 90-100 ℃, and keeping the vacuum degree between-0.06 MPa and-0.095 MPa.
Step a3, adding 7.5 kg of diphenylmethane-4, 4-diisocyanate into the reaction kettle, stirring and reacting for 1 hour at the temperature of 90-100 ℃, and keeping the vacuum degree between-0.06 MPa and-0.095 MPa.
Step a4, simultaneously adding 0.4 kg of vinyl tri (2-methoxyethoxy) silane and 0.1 kg of dimorpholinyl diethyl ether into the reaction kettle, stirring and reacting for 30-50 minutes at the temperature of 90-100 ℃, and keeping the vacuum degree at-0.08 MPa to-0.095 MPa.
And a5, turning off stirring, defoaming for 10-20 min, filtering, discharging, and carrying out vacuum packaging or nitrogen packaging to obtain the single-component reaction type polyurethane hot melt adhesive.
Comparative example 2
The preparation method of the single-component reaction type polyurethane hot melt adhesive comprises the following steps:
step b1, adding 10 kg of PTMG-1000, 20 kg of PTMG-2000, 0.2 kg of ultraviolet absorbent UV-327, 0.1 kg of antioxidant 1010, 22 kg of NPG-3000, 32 kg of PCL-3000 and 0.02 kg of phosphoric acid into a reaction kettle, reacting at the temperature of 100-140 ℃, keeping the pressure between-0.085 MPa and-0.095 MPa, and stirring and dehydrating for 2 hours.
And b2, stopping heating, adding 8 kg of HMDI into the reaction kettle when the temperature in the reaction kettle is reduced to 90-100 ℃, stirring and reacting for 2 hours at the temperature of 90-100 ℃, and keeping the vacuum degree between-0.06 MPa and-0.095 MPa.
And b3, adding 7.5 kg of HMDI into the reaction kettle, stirring and reacting for 1 hour at the temperature of between 90 and 100 ℃, and keeping the vacuum degree between-0.06 MPa and-0.095 MPa.
And b4, simultaneously adding 0.4 kg of vinyl tri (2-methoxyethoxy) silane and 0.1 kg of dimorpholinyl diethyl ether into the reaction kettle, stirring and reacting for 30-50 minutes at the temperature of 90-100 ℃, and keeping the vacuum degree at-0.08 MPa to-0.095 MPa.
And b5, turning off stirring, defoaming for 10-20 min, filtering, discharging, and carrying out vacuum packaging or nitrogen packaging to obtain the single-component reactive polyurethane hot melt adhesive.
Comparative example 3
The preparation method of the single-component reaction type polyurethane hot melt adhesive comprises the following steps:
and step c1, adding 10 kg of PTMG-1000, 20 kg of PTMG-2000, 0.2 kg of ultraviolet absorbent UV-327, 0.1 kg of antioxidant 1010, 22 kg of NPG-3000, 32 kg of poly adipic acid-hexanediol ester diol with the molecular weight of 3000 and 0.02 kg of phosphoric acid into a reaction kettle, reacting at the temperature of 100-140 ℃, keeping the pressure of-0.085-0.095 MPa, and stirring and dehydrating for 2 hours.
And c2, stopping heating, adding 8 kg of HMDI into the reaction kettle when the temperature in the reaction kettle is reduced to 90-100 ℃, stirring and reacting for 2 hours at the temperature of 90-100 ℃, and keeping the vacuum degree between-0.06 MPa and-0.095 MPa.
And c3, adding 7.5 kg of diphenylmethane-4, 4-diisocyanate into the reaction kettle, stirring and reacting for 1 hour at the temperature of between 90 and 100 ℃, and keeping the vacuum degree between-0.06 MPa and-0.095 MPa.
And c4, simultaneously adding 0.4 kg of vinyl tri (2-methoxyethoxy) silane and 0.1 kg of dimorpholinyl diethyl ether into the reaction kettle, stirring and reacting for 30-50 minutes at the temperature of 90-100 ℃, and keeping the vacuum degree at-0.08 MPa to-0.095 MPa.
And c5, turning off stirring, defoaming for 10-20 min, filtering, discharging, and carrying out vacuum packaging or nitrogen packaging to obtain the single-component reactive polyurethane hot melt adhesive.
Performance detection
The following performance tests were performed on the single-component reaction type polyurethane hot melt adhesives for solar back sheets prepared in example 1 and example 2 of the present invention and the single-component reaction type polyurethane hot melt adhesives prepared in comparative example 1, comparative example 2, and comparative example 3, respectively:
the method comprises the following steps of (1) treating the surface of a base material to reach a dyne value higher than 50 before bonding by adopting a transparent PET (polyethylene terephthalate) polyester film with the thickness of 200 micrometers and a transparent PVDF (polyvinylidene fluoride) film with the thickness of 20 micrometers, compounding the single-component reaction type polyurethane hot melt adhesive for the solar back panel prepared in the embodiment 1 and the embodiment 2 of the invention and the single-component reaction type polyurethane hot melt adhesive prepared in the proportion 1, the proportion 2 and the proportion 3 with the two base materials respectively, curing for 72 hours at room temperature (RT: 23 +/-1 ℃ and RH: 50 +/-10%) in an environment with the gluing amount of 8-10 g/square meter to obtain cured samples corresponding to the embodiment and the proportion; and then, the following performance detection is carried out by referring to GB/T36802-2018 adhesive for laminating solar photovoltaic back panels:
(1) and (3) detecting the peeling strength: detection environment, RT: 23. + -.1 ℃ RH: 50 percent; the peeling speed was 100 mm/min.
(2) Detecting the light transmittance: the light transmittance was measured using a light transmittance tester.
(3) And (3) detecting weather resistance: and (3) performing a damp-heat aging test, namely aging the cured sample for 1000h at the temperature of 85 ℃ and the humidity of 85%, placing the aged sample in an environment (RT: 23 +/-1 ℃, RH: 50%) for 24h, and detecting the peeling strength at the peeling speed of 100 mm/min.
(4) And (3) detecting yellowing resistance: UV aged 30KWH/m2。
The detection results of the above performance detection are shown in table 1 below:
TABLE 1
As can be seen from table 1 above: the embodiment 1 and the embodiment 2 have high transparency and have good yellowing resistance, good weather resistance and good bonding strength, while the comparative example 1, the comparative example 2 and the comparative example 3 have poor yellowing resistance, unqualified weather resistance or unqualified bonding strength and cannot have good yellowing resistance, good weather resistance and good bonding strength, which shows that the embodiment of the invention has high transparency and good yellowing resistance, good weather resistance and good bonding strength, and can better meet the requirements of the solar cell back panel.
In conclusion, the embodiment of the invention has high transparency, good yellowing resistance, weather resistance, hydrolysis resistance and bonding strength, can better meet the requirements of the solar cell back plate, has simple process and high working efficiency in the bonding process, and reduces the harm to the environment and the health of human bodies.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims. The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Claims (10)
1. The single-component reaction type polyurethane hot melt adhesive for the solar backboard is characterized by mainly comprising the following raw materials in parts by weight: 10-35 parts of isocyanate, 25-65 parts of polycaprolactone diol, 10-40 parts of polyether diol, 5-25 parts of adipic acid polyester diol, 0.1-5 parts of ultraviolet absorber, 0.05-0.5 part of antioxidant, 0.01-0.1 part of stabilizer, 0.01-0.5 part of catalyst and 0.1-5 parts of adhesion promoter;
wherein, the isocyanate adopts diphenylmethane-4, 4-diisocyanate and dicyclohexylmethane diisocyanate.
2. The single-component reaction type polyurethane hot melt adhesive for the solar back plate as claimed in claim 1, wherein the polyether glycol is polytetramethylene ether glycol and has a relative molecular weight of 1000-5000.
3. The single-component reaction type polyurethane hot melt adhesive for the solar back plate as claimed in claim 1 or 2, wherein the hydroxyl value of the polycaprolactone diol is 20-80 mgKOH/g, and the acid values are 0.1-2 mgKOH/g.
4. The single-component reactive polyurethane hot melt adhesive for the solar back sheet according to claim 1 or 2, wherein the adipic acid polyester diol is poly adipic acid-neopentyl glycol ester diol, the hydroxyl value is 20-80 mgKOH/g, and the acid values are all 0.1-2 mgKOH/g.
5. The single-component reaction type polyurethane hot melt adhesive for the solar back panel according to claim 1 or 2, wherein the ultraviolet absorbent is at least one of ultraviolet absorbent UV-327, ultraviolet absorbent UV-531 and ultraviolet absorbent UV-1130.
6. The single-component reactive polyurethane hot melt adhesive for the solar back panel according to claim 1 or 2, wherein the antioxidant is at least one of antioxidant 1076, antioxidant 1035, antioxidant 245 and antioxidant 1010.
7. The one-component reactive polyurethane hot melt adhesive for the solar back sheet according to claim 1 or 2, wherein the stabilizer is at least one of phosphoric acid, benzoyl chloride, benzoic acid and nonanoic acid.
8. The one-component reactive polyurethane hot melt adhesive for solar back sheets according to claim 1 or 2, wherein the catalyst is at least one of dibutyltin dilaurate, stannous octoate, tetramethylethylenediamine, triethylenediamine, dimorpholinodiethyl ether.
9. The single-component reactive polyurethane hot melt adhesive for solar back sheets according to claim 1 or 2, wherein the adhesion promoter is at least one of vinyltris (2-methoxyethoxy) silane, 3-methacryloxypropyltrimethoxysilane, 3-aminopropyltriethoxysilane, and 3-glycidoxypropyltrimethoxysilane.
10. A preparation method of the single-component reaction type polyurethane hot melt adhesive for the solar back panel is used for preparing the single-component reaction type polyurethane hot melt adhesive for the solar back panel, and is characterized by comprising the following steps:
step 1, weighing the following raw materials in parts by weight: 10-35 parts of isocyanate, 25-65 parts of polycaprolactone diol, 10-40 parts of polyether diol, 5-25 parts of adipic acid polyester diol, 0.1-5 parts of ultraviolet absorber, 0.05-0.5 part of antioxidant, 0.01-0.1 part of stabilizer, 0.01-0.5 part of catalyst and 0.1-5 parts of adhesion promoter; wherein, the isocyanate adopts diphenylmethane-4, 4-diisocyanate and dicyclohexylmethane diisocyanate;
step 2, adding the polycaprolactone diol, the polyether diol, the adipic acid polyester diol, the ultraviolet absorbent, the antioxidant and the stabilizer into a reaction kettle, controlling the reaction temperature to be between 100 and 140 ℃, keeping the pressure to be between-0.085 and-0.095 MPa, and stirring and dehydrating for 1 to 4 hours;
step 3, stopping heating, adding the dicyclohexylmethane diisocyanate into the reaction kettle when the temperature in the reaction kettle is reduced to 90-100 ℃, stirring and reacting for 1-2 hours at the temperature of 90-100 ℃, and keeping the vacuum degree at-0.06 MPa to-0.095 MPa;
step 4, adding the diphenylmethane-4, 4-diisocyanate into the reaction kettle, stirring and reacting for 1-2 hours at the temperature of 90-100 ℃, and keeping the vacuum degree between-0.06 MPa and-0.095 MPa;
step 5, simultaneously adding the adhesion promoter and the catalyst into the reaction kettle, stirring and reacting for 30-50 minutes at 90-100 ℃, and keeping the vacuum degree at-0.08 MPa to-0.095 MPa;
and 6, closing stirring, defoaming for 10-20 min, filtering and discharging to obtain the single-component reaction type polyurethane hot melt adhesive for the solar backboard of any one of claims 1-9.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108384501A (en) * | 2018-02-13 | 2018-08-10 | 嘉兴市建川新材料科技有限公司 | A kind of reaction type polyurethane hot melt material and preparation method for 3D printing |
| CN109852321A (en) * | 2018-12-24 | 2019-06-07 | 山东一诺威聚氨酯股份有限公司 | Solvent borne polyurethane hot melt adhesive material and preparation method thereof and application method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108384501A (en) * | 2018-02-13 | 2018-08-10 | 嘉兴市建川新材料科技有限公司 | A kind of reaction type polyurethane hot melt material and preparation method for 3D printing |
| CN109852321A (en) * | 2018-12-24 | 2019-06-07 | 山东一诺威聚氨酯股份有限公司 | Solvent borne polyurethane hot melt adhesive material and preparation method thereof and application method |
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| Title |
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| 朱万强, 西南交通大学出版社 * |
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