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A kind of high damping thermoplastic polyurethane elastomer composition and preparation method thereof

A thermoplastic polyurethane and elastomer technology, applied in the field of high damping thermoplastic polyurethane elastomer composition and preparation thereof, can solve the problems of powder pollution, high cost, complicated manufacture of modified graphene, etc., and achieves easy operation, wide temperature range, The effect of good adhesion

Active Publication Date: 2021-12-10
WANHUA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is powder pollution in the preparation process of the above method, and the manufacture of modified graphene is complicated and expensive.

Method used

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  • A kind of high damping thermoplastic polyurethane elastomer composition and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 70 parts of styrene-isobutylene copolymer and 30 parts of polyester thermoplastic polyurethane elastomer (purchased from Wanhua Chemical Group Co., Ltd., brand WHT-1172) with a hardness of 72D were mixed uniformly on a high-speed mixer, and the The mixture is melt-blended and extruded on an extruder with an extrusion temperature of 200-230° C. to obtain a high-damping thermoplastic polyurethane elastomer composition. Among them, the number-average molecular weight of the styrene-isobutylene copolymer is 100,000, and the styrene content is 15 wt%.

Embodiment 2

[0032] 60 parts of styrene-vinyl acetate copolymer and 40 parts of polyester thermoplastic polyurethane elastomer (purchased from Wanhua Chemical Group Co., Ltd., brand WHT-1164) with a hardness of 64D were mixed uniformly on a high-speed mixer, and The mixture is melt blended and extruded on an extruder with an extrusion temperature of 200-225°C to obtain a high-damping thermoplastic polyurethane elastomer composition. Among them, the number-average molecular weight of the styrene-vinyl acetate copolymer is 300,000, and the styrene content is 30 wt%.

Embodiment 3

[0034] 40 parts of styrene-acrylate copolymer and 60 parts of polyester thermoplastic polyurethane elastomer (purchased from Wanhua Chemical Group Co., Ltd., brand WHT-1185) with a hardness of 85A were mixed uniformly on a high-speed mixer, and The mixture is melted, blended and extruded on an extruder with an extrusion temperature of 165-190° C. to obtain a high-damping thermoplastic polyurethane elastomer composition. Among them, the number-average molecular weight of the styrene-acrylate copolymer is 50,000, and the styrene content is 50 wt%.

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Abstract

The invention relates to a high-damping thermoplastic polyurethane elastomer composition and a preparation method thereof, which is characterized in that the composition comprises: 30-70 parts by weight of thermoplastic polyurethane elastomer and 70-30 parts by weight of vinyl aromatic copolymer. The thermoplastic polyurethane elastomer composition of the present invention has high damping and wide temperature range under a wide range of external forced motion frequencies; good processing performance; excellent formability; good adhesion with other polymers; and preparation The process is simple and easy to operate. The composition can be widely used in vibration and noise reduction in the fields of vehicles, industrial machinery, construction and civil engineering, household appliances, precision instruments and military equipment.

Description

technical field [0001] The invention belongs to the field of thermoplastic elastomer composite materials, in particular to a high-damping thermoplastic polyurethane elastomer composition and a preparation method thereof. Background technique [0002] With the development of industry, people's life has become more and more convenient, and the requirements for material properties in various industries have become more and more stringent. However, meaningless mechanical vibration and noise are flooding all aspects of people's lives. Therefore, it is necessary to explore a kind of material with excellent comprehensive performance and It can play the role of shock absorption and noise reduction. [0003] Thermoplastic polyurethane elastomer (TPU), as a polymer material with excellent performance, is widely used in automobile industry, machinery industry, medical industry, transportation, sporting goods and other industries. [0004] TPU is a thermoplastic elastomer that can be m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/22C08L75/06C08L31/04C08L25/14C08L75/08C08L47/00
Inventor 张元珂付小亮黄岐善
Owner WANHUA CHEM GRP CO LTD