CN116855214A - Polyurethane hot melt adhesive for outdoor sport functional fabric and preparation method thereof - Google Patents
Polyurethane hot melt adhesive for outdoor sport functional fabric and preparation method thereof Download PDFInfo
- Publication number
- CN116855214A CN116855214A CN202310832087.8A CN202310832087A CN116855214A CN 116855214 A CN116855214 A CN 116855214A CN 202310832087 A CN202310832087 A CN 202310832087A CN 116855214 A CN116855214 A CN 116855214A
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- CN
- China
- Prior art keywords
- hot melt
- melt adhesive
- polyol
- polyurethane hot
- polyester polyol
- 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.)
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- 239000004814 polyurethane Substances 0.000 title claims abstract description 104
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 104
- 239000004831 Hot glue Substances 0.000 title claims abstract description 88
- 239000004744 fabric Substances 0.000 title claims abstract description 66
- 238000002360 preparation method Methods 0.000 title abstract description 13
- 238000004519 manufacturing process Methods 0.000 title description 4
- 229920005862 polyol Polymers 0.000 claims abstract description 73
- 150000003077 polyols Chemical class 0.000 claims abstract description 72
- 229920005906 polyester polyol Polymers 0.000 claims abstract description 69
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 32
- 229920000570 polyether Polymers 0.000 claims abstract description 32
- 125000005442 diisocyanate group Chemical group 0.000 claims abstract description 25
- 239000004417 polycarbonate Substances 0.000 claims abstract description 14
- 229920000515 polycarbonate Polymers 0.000 claims abstract description 14
- 239000004970 Chain extender Substances 0.000 claims abstract description 13
- 239000003054 catalyst Substances 0.000 claims abstract description 12
- 239000002318 adhesion promoter Substances 0.000 claims abstract description 11
- 239000003381 stabilizer Substances 0.000 claims abstract description 11
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 9
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 9
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 36
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 21
- 238000006243 chemical reaction Methods 0.000 claims description 19
- 239000000203 mixture Substances 0.000 claims description 16
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 14
- 239000000376 reactant Substances 0.000 claims description 12
- 238000004321 preservation Methods 0.000 claims description 11
- 239000003822 epoxy resin Substances 0.000 claims description 9
- 229920000647 polyepoxide Polymers 0.000 claims description 9
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 8
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 8
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 claims description 6
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 6
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 6
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 5
- -1 polyhexamethylene carbonate Polymers 0.000 claims description 5
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 4
- 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 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 4
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 claims description 4
- GECNIOWBEXHZNM-UHFFFAOYSA-N hexyl hydrogen carbonate Chemical compound CCCCCCOC(O)=O GECNIOWBEXHZNM-UHFFFAOYSA-N 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 229920001451 polypropylene glycol Polymers 0.000 claims description 4
- 230000035484 reaction time Effects 0.000 claims description 4
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- KMBMQZQZBOLJHN-UHFFFAOYSA-N 2-methyloxirane;oxolane Chemical compound CC1CO1.C1CCOC1 KMBMQZQZBOLJHN-UHFFFAOYSA-N 0.000 claims description 2
- 239000005711 Benzoic acid Substances 0.000 claims description 2
- DPUOLQHDNGRHBS-UHFFFAOYSA-N Brassidinsaeure Natural products CCCCCCCCC=CCCCCCCCCCCCC(O)=O DPUOLQHDNGRHBS-UHFFFAOYSA-N 0.000 claims description 2
- URXZXNYJPAJJOQ-UHFFFAOYSA-N Erucic acid Natural products CCCCCCC=CCCCCCCCCCCCC(O)=O URXZXNYJPAJJOQ-UHFFFAOYSA-N 0.000 claims description 2
- 239000005057 Hexamethylene diisocyanate Substances 0.000 claims description 2
- 239000005058 Isophorone diisocyanate Substances 0.000 claims description 2
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 claims description 2
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 2
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 2
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 claims description 2
- 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 2
- 235000010233 benzoic acid Nutrition 0.000 claims description 2
- HIFVAOIJYDXIJG-UHFFFAOYSA-N benzylbenzene;isocyanic acid Chemical class N=C=O.N=C=O.C=1C=CC=CC=1CC1=CC=CC=C1 HIFVAOIJYDXIJG-UHFFFAOYSA-N 0.000 claims description 2
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 2
- DPUOLQHDNGRHBS-KTKRTIGZSA-N erucic acid Chemical compound CCCCCCCC\C=C/CCCCCCCCCCCC(O)=O DPUOLQHDNGRHBS-KTKRTIGZSA-N 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 claims description 2
- ACCCMOQWYVYDOT-UHFFFAOYSA-N hexane-1,1-diol Chemical compound CCCCCC(O)O ACCCMOQWYVYDOT-UHFFFAOYSA-N 0.000 claims description 2
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 claims description 2
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 claims description 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 2
- 229920000909 polytetrahydrofuran Polymers 0.000 claims description 2
- 239000004180 red 2G Substances 0.000 claims description 2
- 230000009467 reduction Effects 0.000 claims description 2
- 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 2
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 claims description 2
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 claims description 2
- VPKDCDLSJZCGKE-UHFFFAOYSA-N carbodiimide group Chemical group N=C=N VPKDCDLSJZCGKE-UHFFFAOYSA-N 0.000 claims 1
- 230000000052 comparative effect Effects 0.000 description 23
- 239000011248 coating agent Substances 0.000 description 18
- 238000000576 coating method Methods 0.000 description 18
- 230000001070 adhesive effect Effects 0.000 description 16
- 239000000853 adhesive Substances 0.000 description 11
- 239000004433 Thermoplastic polyurethane Substances 0.000 description 7
- 239000002131 composite material Substances 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- MTEZSDOQASFMDI-UHFFFAOYSA-N 1-trimethoxysilylpropan-1-ol Chemical compound CCC(O)[Si](OC)(OC)OC MTEZSDOQASFMDI-UHFFFAOYSA-N 0.000 description 2
- 229920002334 Spandex Polymers 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000007719 peel strength test Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000004759 spandex Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001718 carbodiimides Chemical class 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000009982 effect on human Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229940113116 polyethylene glycol 1000 Drugs 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000012942 water-based acrylic adhesive Substances 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
-
- 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
- C08G18/44—Polycarbonates
-
- 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
- C08G18/4825—Polyethers containing two hydroxy groups
-
- 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
- C08G18/4833—Polyethers containing oxyethylene units
-
- 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
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6603—Compounds of groups C08G18/42, C08G18/48, or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6607—Compounds of groups C08G18/42, C08G18/48, or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
Abstract
The application relates to the field of hot melt adhesives, and discloses a polyurethane hot melt adhesive for outdoor sport functional fabric and a preparation method thereof; the polyurethane hot melt adhesive is prepared from the following raw materials in parts by weight: 12-51 parts of polyester polyol, 20-40 parts of polyether polyol, 1-3 parts of chain extender, 10-30 parts of special polyol, 20-40 parts of diisocyanate, 1-4 parts of adhesion promoter, 0.5-2 parts of silane coupling agent, 0.1-1 part of antioxidant, 0.1-1 part of stabilizer and 0.1-0.5 part of catalyst; the polyester polyol is crystalline polyester polyol and amorphous polyester polyol, and the special polyol is high molecular type polycarbonate polyol; the application also discloses a preparation method of the polyurethane hot melt adhesive, and the prepared polyurethane hot melt adhesive has stable performance, and has good adhesion stability and weather resistance when being used for the outdoor sport functional fabric, so that the prepared outdoor sport functional fabric is not easy to deglue.
Description
Technical Field
The application relates to the field of hot melt adhesives, in particular to a polyurethane hot melt adhesive for outdoor sport functional fabric and a preparation method thereof.
Background
The outdoor sport functional fabric is generally used for manufacturing mountaineering wear, skiing wear, outdoor jacket and other clothes, is used in exploration and severe environments and has a protection effect on human bodies, and the functional fabric is generally formed by bonding and laminating one or more layers of textile materials and other functional materials, has the functions of stiffness, building resistance, warmth retention, ventilation, wind resistance, moisture permeability and the like, and also has the characteristics of radiation resistance, washing resistance, wear resistance and the like.
The functional fabric is generally adhered by using an adhesive in the adhering process, the conventional adhesive comprises a water-based acrylic adhesive, an oily polyurethane adhesive and a reactive polyurethane hot melt adhesive, and compared with other adhesives, the reactive polyurethane hot melt adhesive has better environmental protection and less environmental pollution, however, after the conventionally used reactive polyurethane hot melt adhesive is used for a period of time, the outdoor sport functional fabric prepared by adhering the reactive polyurethane hot melt adhesive is easy to be degummed between fabric layers of the functional fabric, so that the service life of the functional fabric is reduced.
Disclosure of Invention
The application provides a polyurethane hot melt adhesive for an outdoor sport functional fabric and a preparation method thereof, aiming at solving the problem that degumming easily occurs between fabric layers of the functional fabric prepared by the polyurethane hot melt adhesive which is conventionally used and reducing the service life of the functional fabric.
In a first aspect, the application provides a polyurethane hot melt adhesive for outdoor sport functional fabric, which adopts the following technical scheme:
a polyurethane hot melt adhesive for outdoor sport functional fabric is prepared from the following raw materials in parts by weight:
12-51 parts of polyester polyol
20-40 parts of polyether polyol
1-3 parts of chain extender
10-30 parts of special polyol
20-40 parts of diisocyanate
1-4 parts of adhesion promoter
Silane coupling agent 0.5-2 parts
0.1-1 part of antioxidant
0.1 to 1 part of stabilizer
0.1-0.5 part of catalyst;
wherein the polyester polyol consists of crystalline polyester polyol and amorphous polyester polyol, and the special polyol is high molecular type polycarbonate polyol.
Through adopting above-mentioned technical scheme, when the polyurethane hot melt adhesive of making was used for outdoor exercises functional fabric, had better adhesive strength, had better weatherability and anti-attenuation's effect simultaneously, the outdoor exercises functional fabric of making used for a long time is difficult for coming unstuck, and the durability is good.
According to the technical scheme, polyester polyol, polyether polyol and special polyol are used as polyurethane soft segments, diisocyanate and chain extender are used as polyurethane hard segments, wherein the polyester polyol is selected as a combination of crystalline polyester polyol and amorphous polyester polyol, the prepared polyurethane hot melt adhesive has good opening time, melt viscosity and bonding strength, the molecular chain segment of the polyether polyol contains ether bonds, the cohesive energy is low and is easy to rotate, the polyether polyol, the polyester polyol and the diisocyanate are used for reaction, the mechanical properties of the prepared polyurethane hot melt adhesive are good, the weather resistance and the flexibility are good, and the high molecular polycarbonate polyol is used as the special polyol and is introduced into a reaction system to produce a synergistic effect with the polyester polyol and the polyether polyol, so that the prepared polyurethane hot melt adhesive has good weather resistance and attenuation resistance while having good bonding strength.
The NCO% of the polyurethane hot melt adhesive prepared by the application is 3.5-4.2%, the opening time is 95-160min, the viscosity is 10500-11500 mPa.S/100 ℃, the polyurethane hot melt adhesive is suitable for the lamination of outdoor sport functional fabrics, and the prepared functional fabrics have good bonding strength and weather resistance.
Preferably, the ratio of the amount of the crystalline polyester polyol to the amorphous polyester polyol is 1 (0.8-1).
By adopting the technical scheme, the crystalline polyester polyol and the amorphous polyol with a better proportion are used as the polyester polyol and react with diisocyanate, so that the prepared polyurethane hot melt adhesive has better bonding strength and viscosity, and also has better opening time, is suitable for the adhesive production of the sport functional fabric, and can shorten the opening time and reduce the bonding stability when the content of the crystalline polyester polyol is more, and can reduce the bonding property to the fabric when the content of the amorphous polyester polyol is more.
Preferably, the average weight average molecular weight of the crystalline polyester polyol is 1000 to 3500, and the average weight average molecular weight of the amorphous polyester polyol is 2000 to 5500.
By adopting the technical scheme, the polyurethane hot melt adhesive prepared from the crystalline polyester polyol and the amorphous polyester polyol with the preferable average weight average molecular weight has better adhesiveness and viscosity.
Preferably, the high molecular type polycarbonate polyol is one or a combination of polyhexamethylene carbonate glycol, poly-1, 6-hexyl carbonate glycol, poly-1, 4-butanediol-1, 6-hexanediol carbonate glycol and poly-cyclohexanedimethanol-1, 6-hexanediol carbonate glycol, and the average weight average molecular weight of the high molecular type polycarbonate polyol is 5000-10000.
By adopting the technical scheme, the intermolecular force of the polymer type polycarbonate polyol is larger, and the polymer type polycarbonate polyol with better average weight average molecular weight can better cooperate with the crystalline polyester polyol, the amorphous polyester polyol and the polyether polyol and react with diisocyanate, so that the adhesive property and the ageing resistance of the prepared polyurethane hot melt adhesive are improved.
Preferably, the polyether polyol is one or more of polyoxyethylene glycol, polyoxypropylene glycol, polytetrahydrofuran ether glycol and tetrahydrofuran-propylene oxide copolyglycol, and the average weight average molecular weight of the polyether polyol is 400-4000.
By adopting the technical scheme, the introduction of the polyether polyol with better average weight average molecular weight can be cooperated with polyester polyol and special polyol to stably react with diisocyanate, and the prepared polyurethane hot melt adhesive has better adhesiveness and better weather resistance.
Preferably, the chain extender is one or a combination of ethylene glycol, propylene glycol, 1, 4-butanediol, hexanediol, trimethylolpropane, neopentyl glycol, diethylene glycol and triethylene glycol.
By adopting the technical scheme, the chain extender can improve the polymerization degree of the molecular chain segments of the polyurethane hot melt adhesive, and the adhesive strength of the prepared polyurethane hot melt adhesive is improved.
Preferably, the diisocyanate is one or more of toluene diisocyanate, diphenylmethane diisocyanate, hydrogenated diphenylmethane diisocyanate, isophorone diisocyanate, hexamethylene diisocyanate, and carbodiimide-based diphenylmethyl diisocyanate.
By adopting the technical scheme, the diisocyanate provides isocyanate groups to react with polyol hydroxyl groups, and the prepared polyurethane hot melt adhesive has better adhesiveness.
Preferably, the adhesion promoter is one of epoxy resin E-44, epoxy resin E-51 and epoxy resin E-128, the stabilizer is one or more of phosphoric acid, erucic acid, benzoic acid and citric acid, the catalyst is one or more of dibutyl tin dilaurate, stannous octoate, triethylene diamine, triethanolamine and dimorpholine diethyl ether, and the antioxidant is one or a combination of antioxidant 1010 and antioxidant 168.
By adopting the technical scheme, the epoxy resin is used as the adhesion promoter, so that the prepared polyurethane hot melt adhesive has good viscosity and good bonding stability, the catalyst can further improve the reaction efficiency, the antioxidant can further improve the weather resistance of the prepared polyurethane hot melt adhesive, and the stabilizer can improve the viscosity stability of the prepared polyurethane hot melt adhesive.
In a second aspect, the application provides a preparation method of polyurethane hot melt adhesive for outdoor sport functional fabric, which adopts the following technical scheme:
a preparation method of polyurethane hot melt adhesive for outdoor sport functional fabric comprises the following steps:
s1, adding polyester polyol, polyether polyol, special polyol and a chain extender into reaction equipment, and carrying out melt mixing and stirring to obtain a first mixture;
s2, adding an adhesion promoter, a stabilizer and an antioxidant into the first mixture, uniformly stirring, and vacuumizing and dehydrating to obtain a second mixture;
s3, cooling the second mixture, adding diisocyanate subjected to heat preservation treatment, vacuumizing and heating for reaction to obtain a polyurethane reactant;
and S4, cooling the polyurethane reactant, adding a catalyst and a silane coupling agent into the polyurethane reactant, uniformly stirring, and then performing vacuum defoaming to obtain the polyurethane hot melt adhesive.
By adopting the technical scheme, polyester polyol, polyether polyol, special polyol and chain extender are firstly melted uniformly, the mixing uniformity of various polyols is improved, diisocyanate subjected to heat preservation treatment is added for reaction, the heat preservation treatment is used for improving the reactivity of the diisocyanate, so that the diisocyanate and the active hydroxyl groups of the polyols are fully reacted, and finally, a catalyst and a silane coupling agent are added to prepare the polyurethane hot melt adhesive with stable system, good adhesiveness and weather resistance.
Preferably, the melting temperature in the step S1 is 100-120 ℃; the vacuum degree of the vacuumizing in the step S2 is-0.08 to-0.1 MPa, and the time is 0.5 to 3 hours; the temperature reduction temperature in the step S3 is 60-80 ℃, the heat preservation condition of diisocyanate is nitrogen protection, the heat preservation temperature is 45-55 ℃, the heat preservation time is 30-60min, the vacuum degree of vacuumizing is minus 0.08 to minus 0.1MPa, the reaction time is 0.5-3h, and the reaction temperature is 100-120 ℃; the vacuum degree of the vacuum defoamation in the step S4 is 1-300Pa, and the temperature is 100-120 ℃.
Through adopting above-mentioned technical scheme, under the better melting temperature, make above-mentioned polyol can carry out the melting evenly, later under better vacuum degree and temperature, make the system carry out the reaction steadily, and then make the stable, polyurethane hot melt adhesive that has better cohesiveness and weatherability of system.
In summary, the application has the following beneficial effects:
1. the polyurethane hot melt adhesive for the outdoor sport functional fabric provided by the application has the advantages that the crystalline polyester polyol, the amorphous polyester polyol, the polyether polyol and the high molecular polycarbonate polyol are used as soft segments of polyurethane, the chain extender and the diisocyanate are used as hard segments of polyurethane, the full reaction is carried out, and the adhesion promoter, the silane coupling agent, the antioxidant, the stabilizer and the catalyst are introduced into a polyurethane system, so that the prepared polyurethane hot melt adhesive has good adhesive property and weather resistance, and has good adhesive property, difficult aging and good anti-attenuation property when applied to the outdoor sport functional fabric.
2. The average weight average molecular weight of the crystalline polyester polyol, the amorphous polyester polyol, the polyether polyol and the high molecular type polycarbonate polyol is controlled in a better range, so that the hydroxyl groups of the polyol and diisocyanate are fully reacted, and further the polyurethane hot melt adhesive with better opening time, viscosity, adhesive property and weather resistance is prepared.
3. According to the preparation method disclosed by the application, the diisocyanate is subjected to heat preservation, so that the diisocyanate and the polyol system are subjected to full and stable reaction, and the polyurethane hot melt adhesive with stable system and excellent performance is prepared.
Detailed Description
The present application will be described in further detail with reference to examples.
The following are specifications and parameters of some of the raw materials of the present application, which are commercially available in the examples and preparations of the present application:
1. XCP-1000H, XCP-2000PM, XCP-1000PM: xuan chemical;
2. dynal 7362, dynal 7381, dynal 7140, dynal 7130, dynal 7361: win the creation.
Examples
Example 1
Example 1 discloses a polyurethane hot melt adhesive for outdoor sport functional fabric, which is prepared by the following steps:
s1, adding 7.5kg of XCP-1000H with average weight average molecular weight of 1000 as crystalline polyester polyol, 4.5kg of Dynal 7140 with average weight average molecular weight of 5500 as amorphous polyester polyol, 20kg of polyoxypropylene glycol with average weight average molecular weight of 4000 as polyether polyol, 10kg of poly-1, 6-hexyl carbonate glycol with average weight average molecular weight of 5000 as special polyol and 1kg of 1, 4-butanediol as chain extender into a reaction kettle, carrying out melt mixing and stirring at 100 ℃, and obtaining a first mixture after uniform stirring;
s2, adding 1kg of epoxy resin E-44 serving as an adhesion promoter, 0.1kg of phosphoric acid serving as a stabilizer and 0.1kg of antioxidant 1010 into the first mixture, uniformly stirring, vacuumizing for dehydration, wherein the vacuumizing vacuum degree is-0.08 MPa, and the vacuumizing time is 0.5h, so as to prepare a second mixture;
s3, cooling the second mixture to 60 ℃, adding 20kg of diphenylmethane diisocyanate which is preserved for 30min under the protection of nitrogen at 45 ℃ to serve as diisocyanate, and controlling the reaction temperature to be 100 ℃ and the reaction time to be 0.5h under the condition that the vacuum degree is minus 0.08MPa to prepare a polyurethane reactant;
s4, cooling the polyurethane reactant to 60 ℃, adding 0.1kg of dimorpholine diethyl ether serving as a catalyst and 0.5kg of gamma-glycidol ether oxypropyl trimethoxy silane serving as a silane coupling agent into the polyurethane reactant, stirring uniformly, and then carrying out vacuum defoaming, wherein the vacuum degree of the vacuum defoaming is 1Pa, and the temperature is 100 ℃ to prepare the polyurethane hot melt adhesive.
Examples 2 to 3
Examples 2-3 disclose a polyurethane hot melt adhesive for outdoor sport functional fabrics, which is different from example 1 in the amount of raw materials and reaction conditions, see in particular table 1 below.
TABLE 1 raw materials amounts and reaction conditions Table for examples 1-3
Example 4
Example 4 discloses a polyurethane hot melt adhesive for outdoor sport functional fabric, which is different from example 3 in the ratio of crystalline polyester polyol to amorphous polyester polyol, the amount of crystalline polyester polyol used in example 4 is 28.33kg, the amount of amorphous polyester polyol used is 22.67kg, and the other is the same as example 3.
Example 5
Example 5 discloses a polyurethane hot melt adhesive for outdoor sport functional fabric, which is different from example 3 in the ratio of crystalline polyester polyol to amorphous polyester polyol, the amount of crystalline polyester polyol used in example 5 is 25.5kg, the amount of amorphous polyester polyol used is 25.5kg, and the other is the same as example 3.
Example 6
Example 6 discloses a polyurethane hot melt adhesive for outdoor sport functional fabric, which is different from example 3 in the kind and molecular weight of crystalline polyester polyol, and in example 6, the crystalline polyester polyol is Dynal 7361, the average weight average molecular weight is 8500, and otherwise is the same as example 3.
Example 7
Example 7 discloses a polyurethane hot melt adhesive for outdoor sport functional fabric, which is different from example 3 in the kind and molecular weight of amorphous polyester polyol, XCP-1000PM, and 1000 in average weight average molecular weight, otherwise the same as example 3.
Example 8
Example 8 discloses a polyurethane hot melt adhesive for outdoor sport functional fabric, which is different from example 3 in that the average weight average molecular weight of the special polyol is different, and the average weight average molecular weight of the special polyol in example 8 is 2000, otherwise the same as example 3.
Example 9
Example 9 discloses a polyurethane hot melt adhesive for outdoor sport functional fabric, which is different from example 1 in that the molecular weight of polyether polyol is different, and the average weight average molecular weight of polyether polyol in example 9 is 5000, otherwise the same as example 1.
Example 10
Example 10 discloses a polyurethane hot melt adhesive for outdoor sport functional fabric, which is different from example 1 in the preparation method, and the preparation method in example 10 is as follows:
s1, adding 7.5kg of XCP-1000H with average weight average molecular weight of 1000 as crystalline polyester polyol, 4.5kg of Dynal 7140 with average weight average molecular weight of 5500 as amorphous polyester polyol, 20kg of polyoxypropylene glycol with average weight average molecular weight of 4000 as polyether polyol, 10kg of poly-1, 6-hexyl carbonate glycol with average weight average molecular weight of 5000 as special polyol and 1kg of 1, 4-butanediol as chain extender into a reaction kettle, carrying out melt mixing and stirring at 100 ℃, and obtaining a first mixture after uniform stirring;
s2, adding 1kg of epoxy resin E-44 serving as an adhesion promoter, 0.1kg of phosphoric acid serving as a stabilizer and 0.1kg of antioxidant 1010 into the first mixture, uniformly stirring, vacuumizing for dehydration, wherein the vacuumizing vacuum degree is-0.08 MPa, and the vacuumizing time is 0.5h, so as to prepare a second mixture;
s3, cooling the second mixture to 60 ℃, adding 20kg of diphenylmethane diisocyanate as diisocyanate, and controlling the reaction temperature to 100 ℃ and the reaction time to 0.5h under the condition of the vacuum degree of-0.08 MPa to prepare a polyurethane reactant;
s4, cooling the polyurethane reactant to 60 ℃, adding 0.1kg of dimorpholine diethyl ether serving as a catalyst and 0.5kg of gamma-glycidol ether oxypropyl trimethoxy silane serving as a silane coupling agent into the polyurethane reactant, stirring uniformly, then carrying out vacuum defoaming, wherein the vacuum degree of the vacuum defoaming is 1Pa, the temperature is 100 ℃, and detecting the NCO% content and the viscosity of the prepared polyurethane hot melt adhesive after the defoaming is finished.
Comparative example
Comparative example 1
Comparative example 1 discloses a polyurethane hot melt adhesive for outdoor sport functional fabric, which is different from example 3 in that an amorphous polyester polyol is replaced with a crystalline polyester polyol in equal amount, and the other is the same as example 3.
Comparative example 2
Comparative example 2 discloses a polyurethane hot melt adhesive for outdoor sport functional fabric, which is different from example 3 in that the crystalline polyester polyol is replaced with the amorphous polyester polyol in equal amount, and the other is the same as example 3.
Comparative example 3
Comparative example 3 discloses a polyurethane hot melt adhesive for outdoor sport functional fabric, which is different from example 3 in the kind of special polyol, the special polyol in comparative example 3 is a polyadipic polyester polyol, the average weight average molecular weight is 10000, and the other is the same as example 3.
Comparative example 4
Comparative example 4 discloses a polyurethane hot melt adhesive for outdoor sport functional fabric, which is different from example 3 in the kind of special polyol, the special polyol in comparative example 3 is a nonionic polyol, the nonionic polyol is polyethylene glycol 1000, and the other is the same as example 3.
Comparative example 5
Comparative example 5 discloses a polyurethane hot melt adhesive for outdoor sport functional fabric, which is different from example 3 in that the special polyol is replaced with the polyether polyol used in example 3 in equal amount, and otherwise is the same as example 3.
Performance test
The polyurethane hot melt adhesives prepared in examples 1 to 10 and comparative examples 1 to 5 of the present application were subjected to the following performance tests:
1. peel strength test:
preparing a functional fabric:
(1) Coating polyurethane hot melt adhesive on a polyether TPU film with the specification of 0.06mm, wherein the coating temperature of the polyurethane hot melt adhesive is 100-120 ℃, the coating speed is 2.4m/min, and the coating adhesive amount is 25-35 g/m 2 The coating temperature in the test according to the application was chosen to be 117℃and the coating gel quantity 29g/m 2 Preparing a rubberized polyether TPU film;
(2) Bonding 75D 200T spring spinning and gluing polyether TPU film, rolling, curing at normal temperature (25+/-1 ℃) for 24 hours, and curing to obtain the functional fabric;
the peel strength test was performed with reference to the test method in GB/T2792, the results were tested and recorded, and the test data are shown in Table 2 below.
TABLE 2 Peel Strength data sheet for polyurethane Hot melt adhesives of examples 1-10 and comparative examples 1-5
As can be seen from the combination of examples 1 to 5 and examples 6 to 7, example 9 and comparative examples 1 to 2 and Table 2, the adhesion of the polyurethane hot melt adhesive obtained by reacting the crystalline polyester polyol and the amorphous polyester polyol having the preferred proportions and the weight average molecular weight with the diisocyanate was good, the peel strength could reach 22N/25mm, the molecular weights of the crystalline polyester polyol and the amorphous polyester polyol were changed in examples 6 to 7, respectively, the adhesion of the polyurethane hot melt adhesive obtained was decreased, the molecular weight of the polyether polyol was changed in example 9, the adhesion of the polyurethane hot melt adhesive obtained was decreased by adding one of the polyester polyols alone in comparative examples 1 and comparative example 2, and the peel strength was decreased.
As can be seen from the combination of examples 1 to 3 and 8 and comparative examples 3 to 5 and Table 2, the adhesiveness of the polyurethane hot melt adhesive obtained by compounding the polymer type polycarbonate polyol of the present application with the above polyol is improved, while the adhesiveness of the polyurethane hot melt adhesive obtained by lowering the molecular weight of the polymer type polycarbonate polyol in example 8 is lowered, while the adhesiveness of the polyurethane hot melt adhesive obtained by using other special polyols in comparative examples 3 to 4 is lowered, the adhesiveness of the polyurethane hot melt adhesive obtained by not adding the special polyol in comparative example 5 is lowered, and the peel strength is significantly lowered.
As can be seen from the combination of examples 1-3 and example 10 and Table 3, the polyurethane hot melt adhesive prepared by the preparation steps of the present application has good adhesion and high peel strength.
2. Weather resistance test
Preparing a composite fabric:
(1) Coating polyurethane hot melt adhesive on a polyether TPU film with the thickness of 0.06mm, wherein the coating temperature of the polyurethane hot melt adhesive is 100-120 ℃, and the coating adhesive amount is 15-30 g/m 2 The coating temperature in the test of the application was selected to be 120 ℃, the coating speed was 2.4m/min, and the coating gel amount was 25g/m 2 Preparing a rubberized polyether TPU film;
(2) Laminating 30D rib spandex elastic fabric and a rubberized polyether TPU film, rolling, curing at normal temperature (25+/-1 ℃) for 24 hours, and curing to obtain a first fabric;
(3) Continuously coating one side of the first facing corresponding to the polyether TPU film with polyurethane hot melt adhesive, wherein the coating temperature of the polyurethane hot melt adhesive is 100-120 ℃, and the coating adhesive amount is 15-30 g/m 2 The coating temperature in the test of the application was selected to be 120 ℃, the coating speed was 2.4m/min, and the coating gel amount was 25g/m 2 Preparing a rubberized first fabric;
(4) Attaching 50D rib spandex elastic fabric and the rubberized first fabric, rolling, curing at normal temperature (25+/-1 ℃) for 24 hours, and curing to obtain the composite fabric;
referring to the test method in GB/T32368-2015, the composite fabric prepared above was subjected to a double 85 weather resistance test, the peel strength of the composite fabric before the test was denoted as F1, the peel strength of the composite fabric after one week of the test was denoted as F2, the change rate of the peel strength before and after the test was denoted as decay rate (unit:%), the decay rate= (F1-F2)/F1, the decay rates of the peel strengths of the composite fabric before and after the test in the radial and weft directions were recorded, respectively, and the test results were recorded, with the test data being shown in Table 3 below.
TABLE 3 data sheet of peel strength decay rate of polyurethane hot melt adhesives of examples 1 to 10 and comparative examples 1 to 5
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As can be seen from the combination of examples 1 to 5 and examples 6 to 7, example 9 and comparative examples 1 to 2 and the combination of Table 3, the polyurethane hot melt adhesive of the present application, which uses the crystalline polyester polyol and the amorphous polyester polyol having the preferred proportions and the average weight average molecular weight and the polyether polyol having the preferred molecular weight, has good weather resistance, low attenuation rate of adhesive force and stable adhesive property.
As can be seen from the combination of examples 1-3 and 8 and the comparison of examples 3-4 and the combination of Table 3, the high molecular type polycarbonate polyol is introduced as a special polyol in the application, and the prepared polyurethane hot melt adhesive has good weather resistance and good attenuation resistance.
The present embodiment is only for explanation of the present application and is not to be construed as limiting the present application, and modifications to the present embodiment, which may not creatively contribute to the present application as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present application.
Claims (10)
1. The polyurethane hot melt adhesive for the outdoor sport functional fabric is characterized by being prepared from the following raw materials in parts by weight:
12-51 parts of polyester polyol
20-40 parts of polyether polyol
1-3 parts of chain extender
10-30 parts of special polyol
20-40 parts of diisocyanate
1-4 parts of adhesion promoter
Silane coupling agent 0.5-2 parts
0.1-1 part of antioxidant
0.1 to 1 part of stabilizer
0.1-0.5 part of catalyst;
wherein the polyester polyol consists of crystalline polyester polyol and amorphous polyester polyol, and the special polyol is high molecular polycarbonate polyol.
2. The polyurethane hot melt adhesive for outdoor sport functional fabric according to claim 1, wherein the ratio of the amount of the crystalline polyester polyol to the amorphous polyester polyol is 1 (0.8-1).
3. The polyurethane hot melt adhesive for outdoor sport functional fabric according to claim 1 or 2, wherein the average weight average molecular weight of the crystalline polyester polyol is 1000 to 3500 and the average weight average molecular weight of the amorphous polyester polyol is 2000 to 5500.
4. The polyurethane hot melt adhesive for outdoor sport functional fabric according to claim 1, wherein the high molecular weight polycarbonate polyol is one or a combination of polyhexamethylene carbonate glycol, poly-1, 6-hexyl carbonate glycol, poly-1, 4-butanediol-1, 6-hexanediol carbonate glycol and poly-cyclohexanedimethanol-1, 6-hexanediol carbonate glycol, and has an average weight average molecular weight of 5000-10000.
5. The polyurethane hot melt adhesive for outdoor sport functional fabric according to claim 1, wherein the polyether polyol is one or more of polyethylene oxide glycol, polypropylene oxide glycol, polytetrahydrofuran ether glycol and tetrahydrofuran-propylene oxide copolyol, and the average weight average molecular weight of the polyether polyol is 400-4000.
6. The polyurethane hot melt adhesive for outdoor sport functional fabric according to claim 1, wherein the chain extender is one or a combination of ethylene glycol, propylene glycol, 1, 4-butanediol, hexanediol, trimethylolpropane, neopentyl glycol, diethylene glycol and triethylene glycol.
7. The polyurethane hot melt adhesive for outdoor sport functional fabric according to claim 1, wherein the diisocyanate is one or more of toluene diisocyanate, diphenylmethane diisocyanate, hydrogenated diphenylmethane diisocyanate, isophorone diisocyanate, hexamethylene diisocyanate and carbodiimide group diphenyl methyl diisocyanate.
8. The polyurethane hot melt adhesive for outdoor sport functional fabric according to claim 1, wherein the adhesion promoter is one of epoxy resin E-44, epoxy resin E-51, epoxy resin E-128, the stabilizer is one or more of phosphoric acid, erucic acid, benzoic acid, and citric acid, the catalyst is one or more of dibutyltin dilaurate, stannous octoate, triethylenediamine, triethanolamine, and dimorpholine diethyl ether, and the antioxidant is one or a combination of antioxidant 1010 and antioxidant 168.
9. A method for preparing the polyurethane hot melt adhesive for the outdoor sport functional fabric according to any one of claims 1 to 8, comprising the steps of:
s1, adding polyester polyol, polyether polyol, special polyol and a chain extender into reaction equipment, and carrying out melt mixing and stirring to obtain a first mixture;
s2, adding an adhesion promoter, a stabilizer and an antioxidant into the first mixture, uniformly stirring, and vacuumizing and dehydrating to obtain a second mixture;
s3, cooling the second mixture, adding diisocyanate subjected to heat preservation treatment, vacuumizing and heating for reaction to obtain a polyurethane reactant;
and S4, cooling the polyurethane reactant, adding a catalyst and a silane coupling agent into the polyurethane reactant, uniformly stirring, and then performing vacuum defoaming to obtain the polyurethane hot melt adhesive.
10. The method for preparing the polyurethane hot melt adhesive for the outdoor sport functional fabric according to claim 9, wherein the melting temperature in the step S1 is 100-120 ℃; the vacuum degree of the vacuumizing in the step S2 is-0.08 to-0.1 MPa, and the time is 0.5 to 3 hours; the temperature reduction temperature in the step S3 is 60-80 ℃, the heat preservation condition of diisocyanate is nitrogen protection, the heat preservation temperature is 45-55 ℃, the heat preservation time is 30-60min, the vacuum degree of vacuumizing is minus 0.08 to minus 0.1MPa, the reaction time is 0.5-3h, and the reaction temperature is 100-120 ℃; the vacuum degree of the vacuum defoamation in the step S4 is 1-300Pa, and the temperature is 100-120 ℃.
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