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PA6 type polyamide thermoplastic elastomer preparation method

A thermoplastic elastomer and polyamide technology, which is applied in the field of preparation of PA6 type polyamide thermoplastic elastomer, can solve the problems of high purity requirements of reaction raw materials, low polymer molecular weight, general product performance, etc., and achieves easy control and easy reaction. , the effect of excellent performance

Active Publication Date: 2015-09-16
HUNAN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the anion polymerization method has the disadvantages that the reaction is not easy to control, the purity of the reaction raw materials is high, the molecular weight of the polymer is not high, and the product performance is general.

Method used

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  • PA6 type polyamide thermoplastic elastomer preparation method
  • PA6 type polyamide thermoplastic elastomer preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Add 1000g caprolactam, 117g polyetheramine D2000, 53g water in the polymerization kettle, 2 Under protection, 230℃, vacuum degree 4000pa, reaction for 16h. After boiling water extraction and vacuum drying, PA6 thermoplastic elastomer is obtained. The tensile strength is 47Mpa, the elongation at break is 260%, and the Shore hardness is 65D.

[0019]

Embodiment 2

[0021] Add 1000g caprolactam, 117g polyetheramine D2000, 53g water in the polymerization kettle, 2 Under protection, 250℃, vacuum degree 4000pa, reaction for 12h, vacuum 4h, boiling water extraction, vacuum drying, then PA6 thermoplastic elastomer can be obtained. The tensile strength is 52Mpa, the elongation at break is 360%, and the Shore hardness is 70D.

[0022]

Embodiment 3

[0024] Add 1000g caprolactam, 461.5 polyetheramine D2000, 76.9g water into the polymerization kettle, 2 Under protection, 230℃, vacuum degree 4000pa, reaction for 16h. After boiling water extraction and vacuum drying, PA6 thermoplastic elastomer is obtained. The tensile strength is 27Mpa, the elongation at break is 560%, and the Shore hardness is 35D.

[0025]

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Abstract

The present invention discloses a PA6 type polyamide thermoplastic elastomer material preparation method, wherein polyether amines with different molecular weights and different functionalities and caprolactam are subjected to copolymerization under the effect of a ring-opening agent to obtain a polyether amine and PA6 block copolymer, and the polymer is subjected to boiling water extraction and drying to obtain the final product. The PA6 type polyamide thermoplastic elastomer of the present invention has characteristics of good compression permanent, excellent mechanical property and wide application. The present invention further provides a preparation method of the PA6 type polyamide thermoplastic elastomer, wherein the method has characteristics of simple process, low energy consumption, high efficiency, easy operation and easy repeating.

Description

Technical field [0001] The present invention relates to a preparation method of PA6 type polyamide thermoplastic elastomer; specifically, it is a method of copolymerizing two-terminal amino polyether and caprolactam under the action of a ring opener to produce PA6 series polyamide thermoplastic elastomer. Background technique [0002] Thermoplastic elastomer (TPE) is a kind of plasticized and shaped polymer material that has rubber elasticity at room temperature and can flow at high temperature. Its polymer chain segment is composed of plastic segment (hard segment) and rubber segment (flexible soft segment) composition. The plastic section is reversible. It forms a physical "cross-linking point" at room temperature, which plays a role of restraining and reinforcing the macromolecular components. At high temperatures, the binding force is lost and becomes plastic; the rubber section is highly capable of free rotation. Elastic chain segments provide material elastic properties. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/40
Inventor 易春旺李杰彭舒敏黄映珊苏胜培王曦
Owner HUNAN NORMAL UNIVERSITY
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