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High-strength temperature-resistant thermoplastic polyurethane elastomer blended modifier and preparation thereof

A thermoplastic polyurethane blending and modification technology, which is applied in the field of thermoplastic polyurethane elastomer blending modification, can solve the problems of thermoplastic polyurethane elastomers that have not yet been seen, and achieve excellent comprehensive performance, heat resistance, and tensile strength. Improved effect

Inactive Publication Date: 2010-11-10
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, there are no related patents and research reports on improving the heat resistance of thermoplastic polyurethane elastomers with long carbon chain nylon as the dispersed phase and adding reaction compatibilizers

Method used

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Examples

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Embodiment 1

Embodiment 2

Embodiment 3

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Abstract

The invention pertains to the field of polymer processing, in particular relates to a method for preparing a high heat-resistant thermoplastic polyurethane elastomer blending modifier with a melt blending method. The blending modifier comprises the following components by weight portions: 60-95 portions of thermoplastic polyurethane elastomer, 1-35 portions of long carbon chain nylon, and 0.5-5 portions of reactive compatibilizer. The blending modifier is pelletized by a twin screw extruder. Compared with the pure polyurethane elastomer, the tensile strength of the blending modifier is improved by 30-50% and the heat resistance thereof is markedly enhanced.

Description

High-strength and heat-resistant thermoplastic polyurethane elastomer blend modification and preparation method thereof technical field The invention belongs to the field of polymer processing, and specifically prepares a high-strength and heat-resistant thermoplastic polyurethane elastomer blend modification by adopting a melt blending method. Background technique Thermoplastic polyurethane elastomer (TPU) is a linear block copolymer composed of soft and hard segments. Thermoplastic polyurethane elastomer has both the flexibility of rubber and the rigidity of plastic. It has high strength, high elongation and high elasticity, excellent tear resistance, wear resistance and low temperature resistance, so it has many high-performance applications. Make mechanical parts, tubing and films, as well as fibers, adhesives and coatings, and more. However, thermoplastic polyurethane elastomer has poor heat resistance. Once its working temperature exceeds 80°C, many of its excellent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/04B29C47/40B29B9/12C08L77/00B29C48/40
CPCB29C48/40
Inventor 李万利刘进立周勇赵莹王笃金
Owner INST OF CHEM CHINESE ACAD OF SCI