CN114316196B - Hydrolysis-resistant polyurethane damping material and preparation method and application thereof - Google Patents
Hydrolysis-resistant polyurethane damping material and preparation method and application thereof Download PDFInfo
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- CN114316196B CN114316196B CN202111644292.9A CN202111644292A CN114316196B CN 114316196 B CN114316196 B CN 114316196B CN 202111644292 A CN202111644292 A CN 202111644292A CN 114316196 B CN114316196 B CN 114316196B
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- 238000013016 damping Methods 0.000 title claims abstract description 98
- 239000004814 polyurethane Substances 0.000 title claims abstract description 90
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 90
- 239000000463 material Substances 0.000 title claims abstract description 88
- 238000002360 preparation method Methods 0.000 title claims abstract description 29
- 230000007062 hydrolysis Effects 0.000 title claims abstract description 23
- 238000006460 hydrolysis reaction Methods 0.000 title claims abstract description 23
- 150000002009 diols Chemical class 0.000 claims abstract description 83
- 229920000728 polyester Polymers 0.000 claims abstract description 83
- 239000002253 acid Substances 0.000 claims abstract description 76
- 239000000539 dimer Substances 0.000 claims abstract description 69
- 239000003054 catalyst Substances 0.000 claims abstract description 22
- 239000004970 Chain extender Substances 0.000 claims abstract description 17
- 125000005442 diisocyanate group Chemical group 0.000 claims abstract description 15
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 42
- 238000006243 chemical reaction Methods 0.000 claims description 30
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 claims description 16
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 14
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 claims description 10
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 10
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 8
- YPFDHNVEDLHUCE-UHFFFAOYSA-N 1,3-propanediol Substances OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 claims description 7
- QWGRWMMWNDWRQN-UHFFFAOYSA-N 2-methylpropane-1,3-diol Chemical compound OCC(C)CO QWGRWMMWNDWRQN-UHFFFAOYSA-N 0.000 claims description 7
- DNIAPMSPPWPWGF-UHFFFAOYSA-N monopropylene glycol Natural products CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 7
- 238000006068 polycondensation reaction Methods 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 claims description 6
- DPKWXRUINJHOOB-UHFFFAOYSA-N 4-(2-hydroxyethoxy)phenol Chemical compound OCCOC1=CC=C(O)C=C1 DPKWXRUINJHOOB-UHFFFAOYSA-N 0.000 claims description 5
- 235000011037 adipic acid Nutrition 0.000 claims description 5
- 239000001361 adipic acid Substances 0.000 claims description 5
- 235000019437 butane-1,3-diol Nutrition 0.000 claims description 5
- RNSLCHIAOHUARI-UHFFFAOYSA-N butane-1,4-diol;hexanedioic acid Chemical compound OCCCCO.OC(=O)CCCCC(O)=O RNSLCHIAOHUARI-UHFFFAOYSA-N 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical compound OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 claims description 5
- 229940043375 1,5-pentanediol Drugs 0.000 claims description 4
- GNBPEYCZELNJMS-UHFFFAOYSA-N 2-methylbutane-1,3-diol Chemical compound CC(O)C(C)CO GNBPEYCZELNJMS-UHFFFAOYSA-N 0.000 claims description 4
- 239000005057 Hexamethylene diisocyanate Substances 0.000 claims description 4
- ALQSHHUCVQOPAS-UHFFFAOYSA-N Pentane-1,5-diol Chemical compound OCCCCCO ALQSHHUCVQOPAS-UHFFFAOYSA-N 0.000 claims description 4
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- OEIJHBUUFURJLI-UHFFFAOYSA-N octane-1,8-diol Chemical compound OCCCCCCCCO OEIJHBUUFURJLI-UHFFFAOYSA-N 0.000 claims description 4
- 229960004063 propylene glycol Drugs 0.000 claims description 4
- 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 4
- 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
- 229910052797 bismuth Inorganic materials 0.000 claims description 3
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 3
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 3
- WPEOOEIAIFABQP-UHFFFAOYSA-N hexanedioic acid;hexane-1,6-diol Chemical compound OCCCCCCO.OC(=O)CCCCC(O)=O WPEOOEIAIFABQP-UHFFFAOYSA-N 0.000 claims description 3
- 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 3
- FKTHNVSLHLHISI-UHFFFAOYSA-N 1,2-bis(isocyanatomethyl)benzene Chemical compound O=C=NCC1=CC=CC=C1CN=C=O FKTHNVSLHLHISI-UHFFFAOYSA-N 0.000 claims description 2
- ALQLPWJFHRMHIU-UHFFFAOYSA-N 1,4-diisocyanatobenzene Chemical compound O=C=NC1=CC=C(N=C=O)C=C1 ALQLPWJFHRMHIU-UHFFFAOYSA-N 0.000 claims description 2
- SBJCUZQNHOLYMD-UHFFFAOYSA-N 1,5-Naphthalene diisocyanate Chemical compound C1=CC=C2C(N=C=O)=CC=CC2=C1N=C=O SBJCUZQNHOLYMD-UHFFFAOYSA-N 0.000 claims description 2
- YRTNMMLRBJMGJJ-UHFFFAOYSA-N 2,2-dimethylpropane-1,3-diol;hexanedioic acid Chemical compound OCC(C)(C)CO.OC(=O)CCCCC(O)=O YRTNMMLRBJMGJJ-UHFFFAOYSA-N 0.000 claims description 2
- VGHCVSPDKSEROA-UHFFFAOYSA-N 2-methyl-1,4-dioxecane-5,10-dione Chemical compound CC1COC(=O)CCCCC(=O)O1 VGHCVSPDKSEROA-UHFFFAOYSA-N 0.000 claims description 2
- 239000005058 Isophorone diisocyanate Substances 0.000 claims description 2
- 229920000562 Poly(ethylene adipate) Polymers 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
- 229920001223 polyethylene glycol Polymers 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
- ORLQHILJRHBSAY-UHFFFAOYSA-N [1-(hydroxymethyl)cyclohexyl]methanol Chemical compound OCC1(CO)CCCCC1 ORLQHILJRHBSAY-UHFFFAOYSA-N 0.000 claims 2
- DNIAPMSPPWPWGF-VKHMYHEASA-N (+)-propylene glycol Chemical compound C[C@H](O)CO DNIAPMSPPWPWGF-VKHMYHEASA-N 0.000 claims 1
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 claims 1
- 229940035437 1,3-propanediol Drugs 0.000 claims 1
- CUUNWWCQMKJKRR-UHFFFAOYSA-N 2,2-dimethylpropane-1,3-diol;hexanedioic acid;hexane-1,1-diol Chemical compound OCC(C)(C)CO.CCCCCC(O)O.OC(=O)CCCCC(O)=O CUUNWWCQMKJKRR-UHFFFAOYSA-N 0.000 claims 1
- BTSRFENVWLDIJH-UHFFFAOYSA-N butane-1,4-diol;2,2-dimethylpropane-1,3-diol;hexanedioic acid Chemical compound OCCCCO.OCC(C)(C)CO.OC(=O)CCCCC(O)=O BTSRFENVWLDIJH-UHFFFAOYSA-N 0.000 claims 1
- ADGGMTAQYKQEOZ-UHFFFAOYSA-N ethane-1,2-diol 2-methyl-1,4-dioxecane-5,10-dione Chemical compound OCCO.CC1COC(=O)CCCCC(=O)O1 ADGGMTAQYKQEOZ-UHFFFAOYSA-N 0.000 claims 1
- 229940093476 ethylene glycol Drugs 0.000 claims 1
- 229920000166 polytrimethylene carbonate Polymers 0.000 claims 1
- 235000013772 propylene glycol Nutrition 0.000 claims 1
- PAPBSGBWRJIAAV-UHFFFAOYSA-N ε-Caprolactone Chemical compound O=C1CCCCCO1 PAPBSGBWRJIAAV-UHFFFAOYSA-N 0.000 claims 1
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 4
- 239000001257 hydrogen Substances 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 4
- 239000003513 alkali Substances 0.000 abstract description 3
- 125000004185 ester group Chemical group 0.000 abstract description 3
- JOYRKODLDBILNP-UHFFFAOYSA-N urethane group Chemical group NC(=O)OCC JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 11
- 238000004821 distillation Methods 0.000 description 8
- -1 cyclohexyldimethanol Chemical compound 0.000 description 7
- 238000001816 cooling Methods 0.000 description 6
- 238000007599 discharging Methods 0.000 description 6
- 230000032683 aging Effects 0.000 description 5
- 230000018044 dehydration Effects 0.000 description 5
- 238000006297 dehydration reaction Methods 0.000 description 5
- 208000005156 Dehydration Diseases 0.000 description 4
- 230000014759 maintenance of location Effects 0.000 description 4
- 229920005906 polyester polyol Polymers 0.000 description 4
- RLJWTAURUFQFJP-UHFFFAOYSA-N propan-2-ol;titanium Chemical compound [Ti].CC(C)O.CC(C)O.CC(C)O.CC(C)O RLJWTAURUFQFJP-UHFFFAOYSA-N 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- VXUYXOFXAQZZMF-UHFFFAOYSA-N tetraisopropyl titanate Substances CC(C)O[Ti](OC(C)C)(OC(C)C)OC(C)C VXUYXOFXAQZZMF-UHFFFAOYSA-N 0.000 description 4
- 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 description 3
- 238000003756 stirring Methods 0.000 description 3
- 239000004636 vulcanized rubber Substances 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 229920002725 thermoplastic elastomer Polymers 0.000 description 2
- ZUFUSIMENKJSMG-UHFFFAOYSA-N 1-methyl-3,5-bis(methylsulfanyl)benzene Chemical compound CSC1=CC(C)=CC(SC)=C1 ZUFUSIMENKJSMG-UHFFFAOYSA-N 0.000 description 1
- IBOFVQJTBBUKMU-UHFFFAOYSA-N 4,4'-methylene-bis-(2-chloroaniline) Chemical group C1=C(Cl)C(N)=CC=C1CC1=CC=C(N)C(Cl)=C1 IBOFVQJTBBUKMU-UHFFFAOYSA-N 0.000 description 1
- 229920000616 Poly(1,4-butylene adipate) Polymers 0.000 description 1
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
- WNLRTRBMVRJNCN-UHFFFAOYSA-L adipate(2-) Chemical compound [O-]C(=O)CCCCC([O-])=O WNLRTRBMVRJNCN-UHFFFAOYSA-L 0.000 description 1
- 230000003679 aging effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- FZWBABZIGXEXES-UHFFFAOYSA-N ethane-1,2-diol;hexanedioic acid Chemical compound OCCO.OC(=O)CCCCC(O)=O FZWBABZIGXEXES-UHFFFAOYSA-N 0.000 description 1
- VLKZOEOYAKHREP-UHFFFAOYSA-N hexane Substances CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 1
- MEBJLVMIIRFIJS-UHFFFAOYSA-N hexanedioic acid;propane-1,2-diol Chemical compound CC(O)CO.OC(=O)CCCCC(O)=O MEBJLVMIIRFIJS-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 238000005191 phase separation Methods 0.000 description 1
- 229920001610 polycaprolactone Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
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Abstract
The invention provides a hydrolysis-resistant polyurethane damping material, a preparation method and application thereof, wherein the polyurethane damping material comprises a component A and a component B; the component A comprises a combination of specific parts of dimer acid polyester diol, a chain extender and a catalyst, the component B comprises a combination of specific parts of dimer acid polyester diol and diisocyanate, the dimer acid polyester diol is used as a raw material, and the dimer acid polyester diol is used as a raw material, so that the obtained polyurethane damping material has excellent thermal stability, acid and alkali resistance, hydrolysis resistance, weather resistance and good damping performance, and the polyester main chain of the prepared polyurethane contains ester groups with strong polarity and can form more hydrogen bonds with urethane groups, thereby improving intermolecular acting force and further having good mechanical properties.
Description
Technical Field
The invention belongs to the technical field of polyurethane, and particularly relates to a hydrolysis-resistant polyurethane damping material, and a preparation method and application thereof.
Background
Damping materials are widely applied to various fields such as aerospace, ships, vehicles, rail transit, shoe materials and the like, and play roles in vibration reduction, noise reduction and the like. The polyurethane material is a block polymer composed of a soft segment and a hard segment, has a large number of hydrogen bonds and micro-phase separation to a certain extent, moves molecular chains when being subjected to external acting force, converts part of kinetic energy into heat energy in molecular motion friction to dissipate, reduces amplitude and noise, and has a good damping effect. However, the conventional polyurethane at present has the common phenomena of narrow damping temperature range, low damping factor and the like. Therefore, the polyurethane structure is designed to widen the temperature range of the polyurethane damping material and improve the damping factor of the polyurethane damping material.
The method for widening the temperature range of the polyurethane damping material is commonly used at present, namely, a side group is introduced on a polyurethane soft segment structure to improve the internal friction of polyurethane molecules during movement, so that the damping performance of the polyurethane damping material is improved. CN101508762a discloses a polyester polyurethane damping material with a same-carbon dimethyl structure on a main chain and a preparation method thereof, comprising the following steps: A. the polyester diol reacts with diisocyanate after vacuum dehydration to synthesize prepolymer; B. the prepolymer is reacted or blocked and grafted with a chain extender to synthesize the polyester polyurethane damping material with the same-carbon dimethyl structure on the main chain, and the chain extender is 3,3 '-dichloro-4, 4' -diaminodiphenyl methane, 3, 5-dimethyl thiotoluene diamine, 1, 4-butanediol or trimethylolpropane, and the polyurethane damping material is vulcanized at room temperature. The neopentyl glycol type polyester polyol is used as the soft segment, so that the obtained polyester polyurethane damping material has shorter side group and poorer hydrolysis resistance, and particularly has shorter service life in a high-temperature and high-humidity environment, thereby limiting the development of the polyester polyurethane damping material in certain fields needing high-temperature and high-humidity environment.
Therefore, development of a polyurethane damping material with excellent hydrolysis resistance is a technical problem which is urgently needed to be solved in the field.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a hydrolysis-resistant polyurethane damping material, and a preparation method and application thereof, wherein the polyurethane damping material comprises a component A and a component B; the dimer acid polyester diol is selected as the preparation raw materials of the component A and the component B, so that the polyurethane damping material with excellent hydrolysis resistance, excellent weather resistance and wide damping temperature range is prepared.
To achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the present invention provides a hydrolysis-resistant polyurethane damping material comprising a component a and a component B;
the component A comprises the following components in parts by weight: 50 to 80 weight parts of dimer acid polyester dihydric alcohol, 1 to 20 weight parts of chain extender and 0.02 to 0.1 weight part of catalyst;
the component B comprises the following components in parts by weight: 30-60 parts of dimer acid polyester diol and 40-70 parts of diisocyanate.
Wherein, the dimer acid polyester diol in the A component can be 53 weight parts, 56 weight parts, 59 weight parts, 62 weight parts, 65 weight parts, 68 weight parts, 71 weight parts, 74 weight parts or 77 weight parts, etc.
The chain extender in the A component can be 2 parts by weight, 4 parts by weight, 6 parts by weight, 8 parts by weight, 10 parts by weight, 12 parts by weight, 14 parts by weight, 16 parts by weight or 18 parts by weight, and the like.
The catalyst in the A component can be 0.03 weight part, 0.04 weight part, 0.05 weight part, 0.06 weight part, 0.07 weight part, 0.08 weight part, 0.09 weight part or the like.
The dimer acid polyester diol in the B component may be 33 parts by weight, 36 parts by weight, 39 parts by weight, 42 parts by weight, 45 parts by weight, 48 parts by weight, 51 parts by weight, 54 parts by weight, 57 parts by weight or the like.
The diisocyanate in the component B may be 43 parts by weight, 46 parts by weight, 49 parts by weight, 52 parts by weight, 55 parts by weight, 58 parts by weight, 61 parts by weight, 64 parts by weight, 69 parts by weight, or the like.
The hydrolysis-resistant polyurethane damping material provided by the invention comprises a component A and a component B, wherein the component A comprises a combination of specific parts of dimer acid polyester diol, a chain extender and a catalyst, the component B comprises a combination of specific parts of dimer acid polyester diol and diisocyanate, the dimer acid polyester polyol is used as a main soft segment component, and the dimer acid polyester polyol is used as a main soft segment component, so that the obtained polyurethane damping material has excellent heat stability, acid and alkali resistance, hydrolysis resistance, weather resistance and good damping performance, and meanwhile, the polyester main chain of the prepared polyurethane contains ester groups with strong polarity and forms more hydrogen bonds with the urethane groups, so that the intermolecular acting force is improved, and the obtained polyurethane damping material also has good mechanical performance; meanwhile, the hydrolysis-resistant polyurethane damping material provided by the invention has higher loss factor and wider damping temperature range, and the damping performance can be adjusted by controlling the content of dimer acid in dimer acid polyester diol, the types and the content of soft and hard segments in polyurethane and the like.
Preferably, the mass ratio of the component A to the component B is 100 (30-450), such as 100:50, 100:80, 100:120, 100:160, 100:200, 100:240, 100:280, 100:320, 100:360 or 100:400, etc.
Preferably, the molecular weight of the dimer acid polyester diol in the a-and B-components is each independently 500 to 4000, e.g. 1000, 1500, 2000, 2500, 3000, 3500 or 4000, etc.
Preferably, the mass percentage of dimer acid in the dimer acid polyester diol in the A component and the B component is 50-80%, such as 53%, 56%, 59%, 62%, 65%, 68%, 71%, 74% or 77%, etc. independently.
Preferably, the dimer acid polyester diol in the component A and the component B are prepared by the following method, and the method comprises the following steps: and carrying out polycondensation reaction on the dimer acid, the dihydric alcohol and the catalyst to obtain the dimer acid polyester dihydric alcohol.
Preferably, the glycol comprises any one or a combination of at least two of ethylene glycol, 1, 2-propylene glycol, 1, 3-propylene glycol, 1, 4-butanediol, 1, 3-butanediol, 1, 5-pentanediol, neopentyl glycol, 1, 6-hexanediol, 1, 8-octanediol, hydroquinone hydroxyethyl ether, cyclohexyldimethanol, 2-methyl-1, 3-propanediol, or 2-methyl-1, 3-butanediol.
Preferably, the polycondensation reaction specifically includes: heating the system to 130-150 ℃ (such as 132 ℃, 134 ℃, 136 ℃, 138 ℃, 140 ℃, 142 ℃, 144 ℃, 146 ℃ or 148 ℃ and the like) for 1-2 h (such as 1.1h, 1.2h, 1.3h, 1.4h, 1.5h, 1.6h, 1.7h, 1.8h or 1.9h and the like), heating the system to 210-230 ℃ (such as 212 ℃, 214 ℃, 216 ℃, 218 ℃, 220 ℃, 222 ℃, 224 ℃, 226 ℃ or 228 ℃ and the like) for the first time, reacting for 1.5-4 h (such as 1.8h, 2.1h, 2.4h, 2.7h, 3h, 3.3h, 3.6h or 3.9h and the like), decompressing and vacuumizing, controlling the temperature of the system to 210-230 ℃ (such as 212 ℃, 214 ℃, 218 ℃, 220 ℃, 222 ℃, 224 ℃, 226 ℃ or 228 ℃ and the like), and continuing the reaction so that the hydroxyl value of the system is 28-224.4 mgKOH/g (such as 30mgKOH/g, 60mgKOH/g, 90 mgKOH/180 g, 180mgKOH/g, 120mgKOH/g and the like.
Preferably, adipic acid is also added to the polycondensation reaction.
Preferably, the chain extender comprises any one or a combination of at least two of ethylene glycol, 1, 2-propylene glycol, 1, 3-propylene glycol, 1, 4-butanediol, 1, 3-butanediol, 1, 5-pentanediol, neopentyl glycol, 1, 6-hexanediol, 1, 8-octanediol, hydroquinone hydroxyethyl ether, cyclohexyldimethanol, 2-methyl-1, 3-propanediol, or 2-methyl-1, 3-butanediol.
Preferably, the catalyst comprises any one or a combination of at least two of stannous octoate, dibutyl tin dilaurate, an organobismuth catalyst or a CUCAT series catalyst.
Preferably, the diisocyanate comprises any one or a combination of at least two of 4, 4-diphenylmethane diisocyanate, toluene diisocyanate, xylylene diisocyanate, 1, 5-naphthalene diisocyanate, p-phenylene diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, hydrogenated 4, 4-diphenylmethane diisocyanate or carbodiimide-modified diphenylmethane diisocyanate.
Preferably, other polyester diols are also added to the A component.
Preferably, the content of the other polyester diol in the polyurethane damping material is 0 to 30 parts by weight and is not equal to 0, for example, 2 parts by weight, 4 parts by weight, 6 parts by weight, 8 parts by weight, 10 parts by weight, 12 parts by weight, 14 parts by weight, 16 parts by weight, 18 parts by weight, 20 parts by weight, 22 parts by weight, 24 parts by weight, 26 parts by weight, 28 parts by weight, or the like.
Preferably, the molecular weight of the other polyester diol is 500 to 4000, such as 1000, 1500, 2000, 2500, 3000 or 3500, etc.
Preferably, the other polyester diol is a polyester oligomer comprising two hydroxyl end groups.
Preferably, the other polyester diol comprises any one or a combination of at least two of poly (1, 4-butylene adipate) diol, poly (ethylene adipate) diol, poly (propylene adipate) diol, poly (1, 6-hexane adipate) diol, poly (neopentyl glycol adipate) diol, poly (ethylene glycol adipate) diol, poly (propylene glycol adipate) diol, poly (hexamethylene glycol adipate) diol, poly (butylene glycol adipate) diol, or poly (caprolactone) diol.
In a second aspect, the present invention provides a method for preparing a polyurethane damping material, the method comprising the steps of:
(1) Reacting dimer acid polyester diol, a chain extender, a catalyst and optionally other polyester diols to obtain a component A; reacting dimer acid polyester diol with diisocyanate to obtain a component B;
(2) And mixing the component A and the component B, curing and forming to obtain the polyurethane damping material.
Preferably, the dimer acid polyester diol in the A-component, optionally other polyester diols, and in the B-component of step (1) and the polyacid polyester polyol further comprises a step of dehydration treatment prior to reaction.
Preferably, the temperature of the dehydration treatment is 80 to 90 ℃, for example, 81 ℃, 82 ℃, 83 ℃, 84 ℃, 85 ℃, 86 ℃, 87 ℃, 88 ℃, 89 ℃, or the like.
Preferably, the pressure of the dehydration treatment is-0.07 to-0.09 MPa, for example-0.072 MPa, -0.074MPa, -0.076MPa, -0.078MPa, -0.08MPa, -0.082MPa, -0.084MPa, -0.086MPa, or-0.088 MPa, etc.
Preferably, the time of the dehydration treatment is 1 to 3 hours, for example, 1.2 hours, 1.4 hours, 1.6 hours, 1.8 hours, 2 hours, 2.2 hours, 2.4 hours, 2.6 hours, 2.8 hours, or the like.
Preferably, the dimer acid polyester diol, chain extender, catalyst and optionally other polyester diol of step (1) are reacted for a reaction time of 2 to 4 hours, such as 2.2 hours, 2.4 hours, 2.6 hours, 2.8 hours, 3 hours, 3.2 hours, 3.4 hours, 3.6 hours or 3.8 hours, etc.
Preferably, the dimer acid polyester diol, chain extender, catalyst and optionally other polyester diol of step (1) are reacted at a reaction temperature of 50 to 70 ℃, e.g. 52 ℃, 54 ℃, 56 ℃, 58 ℃, 60 ℃, 62 ℃, 64 ℃, 66 ℃ or 68 ℃, etc.
Preferably, the reaction time for the reaction of the dimer acid polyester diol with the diisocyanate in step (1) is 2 to 4 hours, for example 2.2 hours, 2.4 hours, 2.6 hours, 2.8 hours, 3 hours, 3.2 hours, 3.4 hours, 3.6 hours or 3.8 hours, etc.
Preferably, the reaction temperature at which the dimer acid polyester diol and diisocyanate in step (1) are reacted is 70 to 90 ℃, for example 72 ℃, 74 ℃, 76 ℃, 78 ℃, 80 ℃, 82 ℃, 84 ℃, 86 ℃, 88 ℃, or the like.
Preferably, the step (2) further comprises a step of preheating the A component and the B component respectively before mixing.
Preferably, the preheating temperature of the A-component is 50 to 60 ℃, for example, 51 ℃, 52 ℃, 53 ℃, 54 ℃, 55 ℃, 56 ℃, 57 ℃, 58 ℃, 59 ℃, or the like.
Preferably, the preheating temperature of the B component is 60 to 70 ℃, for example 61 ℃, 62 ℃, 63 ℃, 64 ℃, 65 ℃, 66 ℃, 67 ℃, 68 ℃, 69 ℃, or the like.
Preferably, the curing and molding temperature in the step (2) is 60 to 90 ℃, for example, 63 ℃, 66 ℃, 69 ℃, 72 ℃, 75 ℃, 78 ℃, 81 ℃, 84 ℃, 87 ℃ or the like.
Preferably, the curing and molding time in the step (2) is 10-30 min, for example 12min, 14min, 16min, 18min, 20min, 22min, 24min, 26min or 28min, etc.
As a preferable technical scheme of the invention, the preparation method of the polyurethane damping material provided by the invention specifically comprises the following steps:
(1) Dehydrating dimer acid polyester diol and optional other polyester diol at 80-90 ℃ and-0.07 to-0.09 MPa for 1-3 h, and reacting with a chain extender and a catalyst at normal pressure and 50-70 ℃ for 2-4 h to obtain a component A; dehydrating dimer acid polyester diol at 80-90 ℃ and-0.07 to-0.09 MPa for 1-3 h, and reacting with diisocyanate at normal pressure and 70-90 ℃ for 2-4 h to obtain a component B;
(2) Preheating the component A and the component B, preheating the component A to 50-60 ℃, preheating the component B to 60-70 ℃, mixing the component A and the component B according to the proportion, then injecting the mixture into a mould at 60-90 ℃ for curing for 10-30 min, and demoulding to obtain the polyurethane damping material.
In a third aspect, the present invention provides the use of a polyurethane damping material according to the first aspect in the field of aerospace, marine, vehicle, rail transit or shoe materials.
Compared with the prior art, the invention has the following beneficial effects:
(1) The hydrolysis-resistant polyurethane damping material provided by the invention comprises a combination of a component A and a component B, wherein the component A comprises a combination of specific parts of dimer acid polyester diol, a chain extender and a catalyst, and the component B comprises a combination of specific parts of dimer acid polyester diol and diisocyanate, and the dimer acid polyester diol is added into the component A and the component B to serve as a soft segment component of polyurethane, so that the obtained polyurethane material has excellent thermal stability, acid and alkali resistance, hydrolysis resistance, weather resistance and good damping performance, and meanwhile, as the main chain of the polyester material contains ester groups with stronger polarity, more hydrogen bonds can be formed between the dimer acid polyester diol and the polyurethane groups, so that intermolecular acting force is improved, and the obtained polyurethane damping material also has good mechanical performance; specifically, the tensile strength of the polyurethane damping material provided by the invention is 21.3-32.8 MPa, the tensile strength after 7d treatment under the conditions of 70 ℃ and 95% R.H is 18.7-27.5 MPa, the strength retention rate after aging is as high as 87.8-93.5%, the temperature range of tan delta is more than or equal to 0.3 is wider, and the temperature range is 68.4-115.7 ℃.
(2) In addition to the advantages, the hydrolysis-resistant polyurethane damping material provided by the invention has higher loss factor and wider damping temperature range, and the damping performance of the hydrolysis-resistant polyurethane damping material can be adjusted by the content of dimer acid in dimer acid polyester diol, the types and the content of soft and hard segments in polyurethane and the like.
Drawings
FIG. 1 is a dynamic mechanical spectrum at 4Hz of the polyurethane damping materials obtained in examples 1 to 4 and comparative example 1.
Detailed Description
The technical scheme of the invention is further described by the following specific embodiments. It will be apparent to those skilled in the art that the examples are merely to aid in understanding the invention and are not to be construed as a specific limitation thereof.
Preparation example 1
A dimer acid polyester diol, its preparation method includes: 500kg of dimer acid (acid value is 190mg KOH/g), 290kg of adipic acid, 210kg of glycol and 0.05kg of tetraisopropyl titanate are added into a reaction vessel, the temperature is raised to 140 ℃, the temperature is kept for 1h, the temperature is gradually raised to 220 ℃, the distillation temperature of a distillation column branch port is controlled to be 98-102 ℃, the reaction is continued for 2h, when the distillate is not distilled, the vacuum pumping is performed under reduced pressure, the system temperature is controlled to be 220 ℃, the reaction is continued, the hydroxyl value is controlled to be 56.1mgKOH/g, the temperature is reduced, and the material is discharged, so that the dimer acid polyester diol with the molecular weight of 2000 is obtained.
Preparation example 2
A dimer acid polyester diol, its preparation method includes: 800kg of dimer acid (acid value is 190mg KOH/g), 100kg of 1, 4-butanediol, 100kg of 2-methyl-1, 3-propanediol and 0.05kg of tetraisopropyl titanate are added into a reaction vessel, the temperature is raised to 140 ℃, the temperature is kept for 2 hours, the temperature is gradually raised to 220 ℃, the distillation temperature of a distillation column branch port is controlled to be 98-102 ℃, the reaction is continued for 4 hours, vacuum pumping is performed when the distillate is not distilled, the system temperature is controlled to be 220 ℃, the reaction is continued, the hydroxyl value is controlled to be 28mgKOH/g, the temperature is reduced, and the material is discharged, so that the dimer acid polyester diol with the molecular weight of 4000 is obtained.
Preparation example 3
A dimer acid polyester diol, its preparation method includes: 500kg of dimer acid (acid value is 190mg KOH/g), 130kg of adipic acid, 170kg of 2-methyl-1, 3-propanediol, 200kg of neopentyl glycol and 0.05kg of tetraisopropyl titanate are added into a reaction vessel, the temperature is raised to 140 ℃, the temperature is kept for 1h, the temperature is gradually raised to 220 ℃, the distillation temperature of a distillation column branch port is controlled to be 98-102 ℃, the reaction is continued for 1.5h, vacuum pumping is performed when the distillate is not distilled any more, the system temperature is controlled to be 220 ℃, the reaction is continued, the hydroxyl value is controlled to be 224.4mgKOH/g, and the dimer acid polyester diol with the molecular weight of 500 is obtained after cooling and discharging.
Preparation example 4
A dimer acid polyester diol, its preparation method includes: 620kg of dimer acid (acid value is 190mg KOH/g), 50kg of adipic acid, 150kg of 1, 6-hexanediol, 180kg of cyclohexyl dimethanol and 0.05kg of tetraisopropyl titanate are added into a reaction vessel, the temperature is raised to 140 ℃, the temperature is kept for 1.5 hours, the temperature is gradually raised to 220 ℃, the distillation temperature of a distillation column branch port is controlled to be 98-102 ℃, the reaction is continued for 3 hours, vacuum pumping is performed when the distillate is not distilled any more, the system temperature is controlled to be 220 ℃, the reaction is continued, the hydroxyl value is controlled to be 112.2mgKOH/g, and the dimer acid polyester diol with the molecular weight of 1000 is obtained after cooling and discharging.
Example 1
A hydrolysis-resistant polyurethane damping material comprises a component A and a component B in a mass ratio of 50:70;
the preparation method comprises the following steps:
(1) 600kg of dimer acid polyester diol (preparation example 1) and 300kg of poly (1, 4-butanediol adipate) diol (PBA, molecular weight 1000) are added into a reaction kettle, dehydrated for 2 hours under the conditions of 80 ℃ and minus 0.07MPa, then 100kg of 1, 4-butanediol and 0.2kg of stannous octoate are added under the conditions of normal pressure and 70 ℃ to be stirred for 3 hours, and the mixture is cooled and discharged to obtain a component A; 600kg of dimer acid polyester diol (preparation example 1) is added into a reaction kettle, dehydrated for 2 hours at 80 ℃ and minus 0.07MPa, then 400kg of 4, 4-diphenylmethane diisocyanate (MDI) is added under normal pressure and 60 ℃ to be heated to 80 ℃, stirred for 2 hours, cooled and discharged, and the component B is obtained;
(2) Preheating the component A and the component B, preheating the component A to 50 ℃, preheating the component B to 60 ℃, then mixing the component A and the component B, curing for 10min in a mould at 70 ℃, and demoulding to obtain the polyurethane damping material.
Example 2
A hydrolysis-resistant polyurethane damping material comprises a component A and a component B in a mass ratio of 50:16;
the preparation method comprises the following steps:
(1) Adding 500kg of dimer acid polyester diol (preparation example 2) into a reaction kettle, dehydrating for 3 hours at 90 ℃ and minus 0.09MPa, adding 50kg of hydroquinone hydroxyethyl ether, 50kg of cyclohexyl dimethanol and 0.5kg of dibutyl tin dilaurate into the reaction kettle at normal pressure and 70 ℃ for stirring for 4 hours, cooling and discharging to obtain a component A; adding 300kg of dimer acid polyester diol (preparation example 2) into a reaction kettle, dehydrating for 3 hours at 90 ℃ and minus 0.09MPa, adding 700kg of Hexamethylene Diisocyanate (HDI) at normal pressure and 70 ℃, heating to 90 ℃, stirring for reacting for 4 hours, cooling and discharging to obtain a component B;
(2) Preheating the component A and the component B, preheating the component A to 60 ℃, preheating the component B to 70 ℃, then mixing the component A and the component B, curing for 30min in a mold at 90 ℃, and demolding to obtain the polyurethane damping material.
Example 3
A hydrolysis-resistant polyurethane damping material comprises a component A and a component B in a mass ratio of 50:210;
the preparation method comprises the following steps:
(1) 500kg of dimer acid polyester diol (preparation example 3) and 50kg of polyhexamethylene glycol neopentyl glycol adipate diol (molecular weight is 1000) are added into a reaction kettle, dehydrated for 1h under the conditions of 80 ℃ and minus 0.07MPa, then 30kg of ethylene glycol and 0.8kg of organic bismuth catalyst BICAT8108 are added under the conditions of normal pressure and 50 ℃ and stirred for 2h, and the materials are cooled and discharged to obtain a component A; adding 550kg of dimer acid polyester diol (preparation example 3) into a reaction kettle, dehydrating for 1h at 80 ℃ and minus 0.07MPa, adding 400kg of 4, 4-diphenylmethane diisocyanate (MDI) and 50kg of carbodiimide modified MDI (LMDI and Wanhua) at normal pressure and 50 ℃ to raise the temperature to 70 ℃, stirring and reacting for 2h, cooling and discharging to obtain a component B;
(2) Preheating the component A and the component B, preheating the component A to 55 ℃, preheating the component B to 65 ℃, then mixing the component A and the component B, curing for 20min in a mold at 80 ℃, and demolding to obtain the polyurethane damping material.
Example 4
A hydrolysis-resistant polyurethane damping material comprises a component A and a component B in a mass ratio of 50:60;
the preparation method comprises the following steps:
(1) 500kg of dimer acid polyester diol (preparation example 4), 100kg of poly (1, 4-butanediol adipate) diol (molecular weight is 2000) and 100kg of poly (1, 6-hexanediol adipate) diol (molecular weight is 2000) are added into a reaction kettle, dehydrated for 2.51 hours under the conditions of 85 ℃ and minus 0.08MPa, 50kg of 2-methyl-1, 3-propanediol, 50kg of 1, 3-butanediol and 0.5kg of organic bismuth catalyst BICAT8108 and 0.5kg of CUCAT-H are added under the conditions of normal pressure and 60 ℃ to be stirred for 3 hours, and then the component A is obtained after cooling and discharging; 450kg of dimer acid polyester diol (preparation example 4) is added into a reaction kettle, dehydrated for 2.5 hours under the conditions of 85 ℃ and minus 0.08MPa, then 300kg of isophorone diisocyanate (IPDI) and 250kg of hydrogenated 4, 4-diphenylmethane diisocyanate (HMDI) are added under the conditions of normal pressure and 60 ℃ to be heated to 90 ℃, stirred for 4 hours, cooled and discharged, and the component B is obtained;
(2) Preheating the component A and the component B, preheating the component A to 60 ℃, preheating the component B to 70 ℃, then mixing the component A and the component B, curing for 25min in a mold at 80 ℃, and demolding to obtain the polyurethane damping material.
Comparative example 1
A polyurethane damping material, which comprises a component A and a component B in a mass ratio of 50:34;
(1) 500kg of poly (1, 4-butanediol adipate) glycol (PBA, molecular weight 2000) is added into a reaction kettle, dehydrated for 2.5 hours under the conditions of 85 ℃ and minus 0.08MPa, then 30kg of 1, 4-butanediol and 0.2kg of stannous octoate are added under the conditions of normal pressure and 60 ℃ to be stirred for 3 hours, and the mixture is cooled and discharged to obtain a component A; 500kg of PBA (molecular weight is 2000) is added into a reaction kettle, dehydrated for 2.5 hours under the conditions of 85 ℃ and minus 0.08MPa, then 500kg of 4, 4-diphenylmethane diisocyanate (MDI) is added under the conditions of normal pressure and 60 ℃ and heated to 80 ℃, stirred for 2 hours for reaction, cooled and discharged, and the component B is obtained;
(2) Preheating the component A and the component B, preheating the component A to 50 ℃, preheating the component B to 60 ℃, then mixing the component A and the component B, curing for 25min in a mould at 70 ℃, and demoulding to obtain the polyurethane damping material.
Performance test:
the polyurethane damping materials obtained in examples 1-4 and comparative example 1 are tested at a frequency of 4Hz by adopting a TA Q800 dynamic thermo-mechanical analyzer, dynamic mechanical spectrograms of the polyurethane damping materials obtained in examples 1-4 and comparative example 1 at a frequency of 4Hz are shown in figure 1, and according to figure 1, it can be seen that the damping temperature ranges of the polyurethane damping materials obtained in examples 1-4, namely, the temperature range of tan delta is more than or equal to 0.3, are all higher than 68 ℃, and the damping temperature range of the polyurethane damping material obtained in comparative example 1 is only 19 ℃, so that the damping performance of the polyurethane damping material provided by the invention is better than that of the polyurethane damping material provided in comparative example.
(1) Tensile strength: according to GB/T528-2009 determination of tensile stress and strain properties of vulcanized rubber or thermoplastic rubber, the tensile stress and strain properties of the vulcanized rubber or thermoplastic rubber are measured by an INSTRON-3367 universal testing machine;
(2) Tensile strength and strength retention after aging: according to GB/T15005-1995 method for testing damp-heat aging of vulcanized rubber, the method is measured by a high-speed rail GOTECH-7005 constant temperature and humidity machine;
(3) temperature range of tan delta greater than or equal to 0.3: taking a temperature interval with tan delta more than or equal to 0.3 on a dynamic mechanical spectrogram (generally, the material has better damping effect when tan delta more than or equal to 0.3).
The polyurethane damping materials obtained in examples 1 to 4 and comparative example 1 were tested according to the above test methods, and the test results are shown in table 1:
TABLE 1
From the data in table 1, it can be seen that: the polyurethane damping material provided by the invention has excellent mechanical properties, ageing property and damping property, specifically, the tensile strength of the polyurethane damping material obtained in examples 1-4 is 21.3-32.8 MPa, the tensile strength after 7d treatment under the condition of 70 ℃ and 95% R.H is 18.7-27.5 MPa, the strength retention rate after ageing is as high as 87.8-93.5%, and the temperature range of tan delta is more than or equal to 0.3 is wider and is 68.4-115.7 ℃.
As can be seen from the comparison of examples 1 to 4 and comparative example 1, the mechanical properties and damping properties of the polyurethane damping materials obtained in examples 1 to 4 are both superior to those of comparative example 1; in particular, the damping temperature range of the polyurethane damping material obtained in example 2 is higher than that of comparative example 1 by 95.6 ℃, and after 7d of wet heat aging test under the conditions of 70 ℃ and 95% R.H, the retention rate of tensile strength of the polyurethane damping material provided in example 2 is higher than that of comparative example 1 by 47.5%.
The applicant states that the present invention is illustrated by the above examples as a hydrolysis-resistant polyurethane damping material and a method of preparing and using the same, but the present invention is not limited to, i.e., does not mean that the present invention must be practiced in dependence upon the above examples. It should be apparent to those skilled in the art that any modification of the present invention, equivalent substitution of raw materials for the product of the present invention, addition of auxiliary components, selection of specific modes, etc., falls within the scope of the present invention and the scope of disclosure.
Claims (16)
1. The hydrolysis-resistant polyurethane damping material is characterized by comprising a component A and a component B;
the component A consists of the following components in parts by weight: 50 to 80 parts by weight of dimer acid polyester dihydric alcohol, 1 to 20 parts by weight of chain extender and 0.02 to 0.1 part by weight of catalyst,
or consists of the following components: 50 to 80 parts by weight of dimer acid polyester diol, 0 to 30 parts by weight of other polyester diol which is not equal to 0, 1 to 20 parts by weight of chain extender and 0.02 to 0.1 part by weight of catalyst;
the component B consists of the following components in parts by weight: 30-60 parts by weight of dimer acid polyester diol and 40-70 parts by weight of diisocyanate;
the catalyst comprises any one or a combination of at least two of stannous octoate, dibutyl tin dilaurate or an organic bismuth catalyst;
the tensile strength of the polyurethane damping material is 21.3-32.8 MPa, and the temperature range of tan delta is more than or equal to 0.3 is 68.4-115.7 ℃.
2. The polyurethane damping material according to claim 1, wherein the mass ratio of the A component to the B component is 100 (30-450).
3. The polyurethane damping material according to claim 1, wherein the molecular weight of dimer acid polyester diol in the a-and B-components is 500 to 4000 each independently.
4. The polyurethane damping material according to claim 1, wherein the mass percentage of dimer acid in the dimer acid polyester diol in the a-component and the B-component is 50 to 80% each independently.
5. The polyurethane damping material according to claim 1, wherein the dimer acid polyester diol in the a-component and the B-component are prepared by a method comprising: and carrying out polycondensation reaction on the dimer acid, the dihydric alcohol and the catalyst to obtain the dimer acid polyester dihydric alcohol.
6. The polyurethane damping material of claim 5, wherein the glycol comprises any one or a combination of at least two of ethylene glycol, 1, 2-propanediol, 1, 3-propanediol, 1, 4-butanediol, 1, 3-butanediol, 1, 5-pentanediol, neopentyl glycol, 1, 6-hexanediol, 1, 8-octanediol, hydroquinone hydroxyethyl ether, cyclohexanedimethanol, 2-methyl-1, 3-propanediol, or 2-methyl-1, 3-butanediol.
7. The polyurethane damping material of claim 5, wherein the polycondensation reaction specifically comprises: heating the system to 130-150 ℃ for 1-2 h, heating the system to 210-230 ℃ for 1.5-4 h, decompressing and vacuumizing, controlling the temperature of the system to 210-230 ℃, and continuing the reaction to ensure that the hydroxyl value of the system is 28-224.4 mg KOH/g, thus finishing the polycondensation reaction.
8. The polyurethane damping material according to claim 5, wherein adipic acid is further added to the polycondensation reaction.
9. The polyurethane damping material of claim 1, wherein the chain extender comprises any one or a combination of at least two of ethylene glycol, 1, 2-propylene glycol, 1, 3-propylene glycol, 1, 4-butanediol, 1, 3-butanediol, 1, 5-pentanediol, neopentyl glycol, 1, 6-hexanediol, 1, 8-octanediol, hydroquinone hydroxyethyl ether, cyclohexanedimethanol, 2-methyl-1, 3-propanediol, or 2-methyl-1, 3-butanediol.
10. The polyurethane damping material according to claim 1, wherein the diisocyanate comprises any one or a combination of at least two of 4, 4-diphenylmethane diisocyanate, toluene diisocyanate, xylylene diisocyanate, 1, 5-naphthalene diisocyanate, p-phenylene diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, hydrogenated 4, 4-diphenylmethane diisocyanate, or carbodiimide-modified diphenylmethane diisocyanate.
11. The polyurethane damping material according to claim 1, wherein the molecular weight of the other polyester diol is 500 to 4000.
12. The polyurethane damping material of claim 1, wherein the other polyester diol is a polyester oligomer containing two hydroxyl end groups.
13. The polyurethane damping material of claim 1, wherein the other polyester diols comprise any one or a combination of at least two of poly (1, 4-butanediol adipate) glycol, poly (ethylene adipate) glycol, poly (propylene adipate) glycol, poly (1, 6-hexanediol adipate) glycol, poly (neopentyl glycol adipate) glycol, poly (ethylene glycol propylene adipate) glycol, poly (hexanediol neopentyl glycol adipate) glycol, poly (butylene glycol neopentyl glycol adipate) glycol, or poly (caprolactone glycol).
14. A method for preparing a polyurethane damping material according to any one of claims 1 to 12, comprising the steps of:
(1) Reacting dimer acid polyester diol, a chain extender, a catalyst and optionally other polyester diols to obtain a component A; reacting dimer acid polyester diol with diisocyanate to obtain a component B;
(2) And mixing the component A and the component B, curing and forming to obtain the polyurethane damping material.
15. The preparation method according to claim 14, characterized in that it comprises the following steps:
(1) Dehydrating dimer acid polyester diol and optional other polyester diol at 80-90 ℃ and-0.07 to-0.09 MPa for 1-3 h, and reacting with a chain extender and a catalyst at normal pressure and 50-70 ℃ for 2-4 h to obtain a component A; dehydrating dimer acid polyester diol at 80-90 ℃ and-0.07 to-0.09 MPa for 1-3 h, and reacting with diisocyanate at normal pressure and 70-90 ℃ for 2-4 h to obtain a component B;
(2) Preheating the component A and the component B, preheating the component A to 50-60 ℃, preheating the component B to 60-70 ℃, mixing the component A and the component B according to the proportion, then injecting the mixture into a mould at 60-90 ℃ for curing for 10-30 min, and demoulding to obtain the polyurethane damping material.
16. Use of a polyurethane damping material according to any one of claims 1 to 13 in the field of aerospace, marine, vehicular, rail transit or shoe materials.
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| CN103289052A (en) * | 2012-03-05 | 2013-09-11 | 旭川化学（昆山）有限公司 | High-hydrolysis-resistance polyurethane sole material and double components thereof |
| CN103483530A (en) * | 2013-09-06 | 2014-01-01 | 旭川化学（昆山）有限公司 | Polyether urethane shoe sole raw liquorbasic solution |
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| CN103289052A (en) * | 2012-03-05 | 2013-09-11 | 旭川化学（昆山）有限公司 | High-hydrolysis-resistance polyurethane sole material and double components thereof |
| CN103483530A (en) * | 2013-09-06 | 2014-01-01 | 旭川化学（昆山）有限公司 | Polyether urethane shoe sole raw liquorbasic solution |
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