High-fluidity and high-wear-resistance thermoplastic polyurethane and preparation method thereof

A thermoplastic polyurethane, high wear resistance technology, used in the field of polyurethane materials, can solve the problems of imperfect appearance, insufficient gloss, poor wear resistance, etc., and achieve the effects of high elongation at break, high hardness and excellent comprehensive performance.

Active Publication Date: 2021-08-13
DONGGUAN JIXIN POLYMER SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disclosed polyurethane material has low viscosity, can enhance the fluidity of raw materials in the mold, reduce the lack of material, pores, and air bubbles on the surface of polyurethane products, make it beautiful in appearance, and solve the problem that the surface of existing polyurethane products is not glossy enough and the appearance is not enough perfect question
But its disclosed polyurethane material has poor abrasion resistance

Method used

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  • High-fluidity and high-wear-resistance thermoplastic polyurethane and preparation method thereof
  • High-fluidity and high-wear-resistance thermoplastic polyurethane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] This embodiment provides a thermoplastic polyurethane with high fluidity and high wear resistance, and the thermoplastic polyurethane includes component A and component B;

[0054] The raw materials for the preparation of the component A include the following components in parts by weight: 30 parts of diisocyanate (toluene diisocyanate), 55 parts of polycaprolactone polyol (purchased from Hunan Juren Chemical New Material Co., Ltd., weight average molecular weight 530g / mol, brand name is 2055), 12 parts of hydroxyl-terminated polybutadiene acrylonitrile (purchased from Zibo Qilong Chemical Co., Ltd.), 7 parts of amine chain extender (3,5-diamine-4-chlorobenzene isobutyl formate) and 0.03 part of catalyst (dibutyltin dilaurate);

[0055] The raw materials for the preparation of component B include the following components in parts by weight: 4 parts of nano silicon dioxide, 6 parts of carboxymethyl cellulose (purchased from Weiyi Chemical (Suzhou) Co., Ltd., the brand is...

Embodiment 2

[0061] This embodiment provides a thermoplastic polyurethane with high fluidity and high wear resistance, and the thermoplastic polyurethane includes component A and component B;

[0062] The raw materials for the preparation of component A include the following components in parts by weight: 20 parts of diisocyanate (toluene diisocyanate), 50 parts of polycaprolactone polyol (purchased from Hunan Juren Chemical New Material Co., Ltd., weight average molecular weight 400g / mol, the grade is 2044), 15 parts of hydroxyl-terminated polybutadiene acrylonitrile (purchased from Zibo Qilong Chemical Co., Ltd.), 5 parts of amine chain extender (ethylenediamine) and 0.01 part of catalyst (dilaurel dibutyltin acid);

[0063] The raw materials for the preparation of component B include the following components in parts by weight: 3 parts of nano silicon dioxide, 4 parts of carboxymethyl cellulose (purchased from Weiyi Chemical (Suzhou) Co., Ltd., the brand is BH2000, and the viscosity is ...

Embodiment 3

[0069] This embodiment provides a thermoplastic polyurethane with high fluidity and high wear resistance, and the thermoplastic polyurethane includes component A and component B;

[0070] The raw materials for the preparation of the component A include the following components in parts by weight: 40 parts of diisocyanate (toluene diisocyanate), 60 parts of polycaprolactone polyol (purchased from Hunan Juren Chemical New Material Co., Ltd., weight average molecular weight 1000g / mol, the grade is 2102), 10 parts of hydroxyl-terminated polybutadiene acrylonitrile (purchased from Zibo Qilong Chemical Co., Ltd.), 10 parts of amine chain extender (ethylenediamine) and 0.05 part of catalyst (dilaurel dibutyltin acid);

[0071] The raw materials for the preparation of component B include the following components in parts by weight: 5 parts of nano silicon dioxide, 8 parts of carboxymethyl cellulose (purchased from Weiyi Chemical (Suzhou) Co., Ltd., the brand is BH2000, and the viscosi...

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Abstract

The invention relates to high-fluidity and high-wear-resistance thermoplastic polyurethane and a preparation method thereof. The thermoplastic polyurethane comprises a component A and a component B, the component A is prepared from the following raw materials in parts by weight: 20 to 40 parts of diisocyanate, 50 to 60 parts of polycaprolactone polyol, 10 to 15 parts of hydroxyl-terminated polybutadiene acrylonitrile, 5 to 10 parts of amine chain extender and 0.01 to 0.05 part of catalyst; the component B is prepared from the following raw materials in parts by weight: 3 to 5 parts of nano silicon dioxide, 4 to 8 parts of carboxymethyl cellulose, 3 to 5 parts of hydroxyl-terminated polysiloxane and 5 to 10 parts of auxiliaries. The thermoplastic polyurethane disclosed by the invention not only has good flowability and wear resistance, but also has relatively high hardness, relatively high elongation at break and excellent comprehensive performance, and the tensile strength is in a relatively high range.

Description

technical field [0001] The invention relates to the technical field of polyurethane materials, in particular to a thermoplastic polyurethane with high fluidity and high wear resistance, a preparation method and application thereof. Background technique [0002] Thermoplastic polyurethane elastomer (TPU) is a linear block copolymer composed of oligomer polyol soft segment and diisocyanate-chain extender hard segment. TPU plays an increasingly important role in modern production and life . [0003] CN103819892A discloses a long aramid fiber-reinforced wear-resistant TPU composite material and a preparation method thereof. The disclosed TPU composite material is calculated by mass parts, 30-75 parts of thermoplastic polyurethane elastomer, 20-60 parts of high-performance long aramid fiber parts, compatibilizer 3-8 parts, anti-wear agent 0.4-1.5 parts, flow modifier 0.4-1.5 parts, chain extender 0.2-0.5 parts, heat stabilizer 0.4-0.6 parts, UV absorber 0.4-0.6 parts share. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/12C08G18/40C08G18/42C08G18/61C08G18/69C08G18/32C08L75/06C08K7/26C08L1/28
CPCC08G18/12C08G18/4009C08G18/4277C08G18/698C08G18/61C08L75/06C08L2207/04C08K2201/011C08G18/3808C08G18/3228C08L1/286C08K7/26
Inventor 何建雄
Owner DONGGUAN JIXIN POLYMER SCI & TECH
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