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Polyurethane elastomer and preparation method thereof

A polyurethane elastomer and system technology, applied in the polymer field, can solve the problem of TPU elastomer not being easy to bond, and achieve the effect of eliminating the pretreatment process, overcoming product application problems, and expanding application occasions and scope.

Active Publication Date: 2019-03-29
厦门誉匠复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a TPU elastomer with high bonding performance and a preparation method thereof in order to overcome the problem that the existing TPU elastomer is not easy to bond

Method used

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  • Polyurethane elastomer and preparation method thereof
  • Polyurethane elastomer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] This embodiment is used to illustrate the TPU elastomer provided by the present invention and its preparation method.

[0037] Take each raw material by weight, specifically as follows:

[0038] Pure MDI: 40±5 parts by weight;

[0039] N-(2-aminoethyl)-3-aminopropyltrimethoxysilane: 10±5 parts by weight;

[0040] Polytetrahydrofuran ether glycol, number average molecular weight 2000: 10±5 parts by weight;

[0041] Polytetrahydrofuran ether glycol, number average molecular weight 1000: 30±5 parts by weight;

[0042] 1,4-butanediol: 10±1 parts by weight;

[0043] Organic bismuth catalyst (model is 8118): 0.5 parts by weight;

[0044] Organozinc catalyst: 1.0 parts by weight;

[0045] Silicone defoamer: 0.3 parts by weight;

[0046] Anti-yellowing agent (bis(1,2,2,6,6-pentamethyl-4-piperidinyl) sebacate light stabilizer): 0.5 parts by weight;

[0047] Among them, the molar ratio of MDI to N-(2-aminoethyl)-3-aminopropyltrimethoxysilane is 6:1, the hydroxyl group in p...

Embodiment 2

[0056] This embodiment is used to illustrate the TPU elastomer provided by the present invention and its preparation method.

[0057] Take each raw material by weight, specifically as follows:

[0058] Pure MDI: 45±5 parts by weight;

[0059] 3-ureapropyltrimethoxysilane: 15 ± 5 parts by weight;

[0060] Polycaprolactone diol, number average molecular weight 2000: 28±5 parts by weight;

[0061] 1,4-butanediol: 12±1 parts by weight;

[0062] Organic bismuth catalyst (model is 8330R): 0.3 parts by weight;

[0063] Organozinc catalyst: 0.7 parts by weight;

[0064] Silicone defoamer: 0.3 parts by weight;

[0065] Anti-yellowing agent (tetrakis [β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid] pentaerythritol ester antioxidant): 0.5 parts by weight;

[0066] Wherein, the molar ratio of MDI and 3-ureapropyltrimethoxysilane is 8:1, and the total content of the hydroxyl group in the polycaprolactone diol and the hydroxyl group in 1,4-butanediol is the same as that in MDI. ...

Embodiment 3

[0075] This embodiment is used to illustrate the TPU elastomer provided by the present invention and its preparation method.

[0076] Take each raw material by weight, specifically as follows:

[0077] IPDI: 35±5 parts by weight;

[0078] N-(2-aminoethyl)-3-aminopropylmethyldimethoxysilane: 15±5 parts by weight;

[0079] Polycaprolactone diol, number average molecular weight 1000: 40±5 parts by weight;

[0080] 1,4-butanediol: 10±1 parts by weight;

[0081] Organic bismuth catalyst (model is 8108): 0.5 parts by weight;

[0082] Organozinc catalyst: 1.0 parts by weight;

[0083] Silicone defoamer: 0.3 parts by weight;

[0084] Anti-yellowing agent (2-(2'-hydroxy-3',5'-di-tert-butylphenyl)-5-chlorobenzotriazole ultraviolet absorber): 0.5 parts by weight;

[0085] Among them, the molar ratio of IPDI to N-(2-aminoethyl)-3-aminopropylmethyldimethoxysilane is 9:1, and the hydroxyl group in polycaprolactone diol and 1,4-butyl The molar ratio of the total hydroxyl group content...

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Abstract

The invention belongs to the field of a polymer, and concretely relates to a polyurethane elastomer and a preparation method thereof. The preparation method of the polyurethane elastomer comprises thefollowing steps: (1) mixing diisocyanate with a silane coupling agent and performing a condensation reaction to obtain a condensation reaction product, wherein the silane coupling agent has two aminogroups, and a molar ratio of diisocyanate to the silane coupling agent is (5 to 10): 1; and (2) performing a polycondensation reaction of the condensation reaction product and polyol and a chain extender to obtain a product containing the polyurethane elastomer. The polyurethane elastomer produced by the method has high bonding properties.

Description

technical field [0001] The invention belongs to the field of polymers, and in particular relates to a polyurethane elastomer and a preparation method thereof. Background technique [0002] Polyurethane TPU elastomers can be processed into products of different structures and shapes through extrusion, injection molding, calendering, casting, blow molding and other production processes. However, the products processed by traditional TPU elastomers are not easy to bond, and if the TPU material is bonded to other materials, it is necessary to pre-treat the surface of the TPU material with an organic treatment agent. corrosion. In addition, these organic treatment agents contain a large amount of solvents, which are easy to volatilize into the atmosphere during use and cause environmental pollution. Furthermore, some TPU profiles that cannot be treated with a treatment agent cannot be firmly bonded with other materials, thereby limiting the application of TPU profiles. Conten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/42C08G18/32C08G18/38
CPCC08G18/3893C08G18/4277C08G18/4808C08G18/4854C08G18/664C08G18/6651C08G18/6674C08G18/6685
Inventor 卢良伟童华德兰永盛饶文川
Owner 厦门誉匠复合材料有限公司