Thermoplastic polyurethane elastomer composition, and preparation method and application thereof

A technology of thermoplastic polyurethane and elastomer, applied in the field of thermoplastic polyurethane elastomer, can solve the problems of complex and difficult production process, high processing temperature and difficult operation, high price and cost, and achieve the effects of reducing wear, improving heat resistance and increasing strength
CN109721701AActive Publication Date: 2019-05-07WANHUA CHEM GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
WANHUA CHEM GRP CO LTD
Publication Date
2019-05-07

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Abstract

The invention relates to a thermoplastic polyurethane elastomer (TPU) composition and a preparation method thereof. The TPU composition has very excellent compression strength, compression permanent deformation, wear resistance and fatigue resistance. The TPU composition mainly comprises the following raw materials: (1) 33-72 parts by mass of polyhydric alcohol, (2) 3-20 parts by mass of a chain extender, and (3) 18-56 parts of diisocyanate. The TPU composition can be prepared by a one-step method. The TPU provided by the invention is suitable for high-pressure hydraulic sealing elements, high-performance elevator rollers, escalator rollers, lifting door rollers and the like.
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Description

technical field

[0001] The invention relates to the technical field of thermoplastic polyurethane elastomers. It specifically relates to a thermoplastic polyurethane elastomer with high compressive strength, low compression set, excellent wear resistance and fatigue resistance, and its preparation method and application. Background technique

[0002] Thermoplastic polyurethane elastomer (TPU) is a multi-block polymer containing soft segments and hard segments. The soft segment is provided by polyol chains, and the hard segment is provided by isocyanate and chain extender chain unit. This feature endows TPU with excellent elasticity, high mechanical strength, low compression set, wear resistance and fatigue resistance, etc., so it is important and widely used in the industrial field.

[0003] At present, the main goal of improving the compressive strength of TPU and reducing the compression set performance is to increase the physical or chemical crosslinking point. The speci...

Claims

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