A kind of preparation method of polyamide 6 thermoplastic elastomer resin

A thermoplastic elastomer and polyamide technology, which is applied in the field of a preparation method of a polyamide 6 thermoplastic elastomer resin, can solve the problems of undiscovered synthesis process route, high purity requirements of reaction raw materials, complicated solvent removal process, etc., and achieves toughness. High, good noise reduction, good elasticity

Active Publication Date: 2017-01-18
沧州旭阳化工有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this type of process, the hydrolysis ring-opening method often involves expensive metal tetraalkyl oxide catalysts, and the reaction time is long, generally exceeding 10 hours; in addition, it is necessary to accurately control the feeding of polyamide hard segments and polyether soft segments It is more difficult to control the reaction than
The anionic polymerization method often comes into contact with toxic isocyanate or phosgene substances, and also 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.
[0007] U.S. Patent No. 4,238,528 discloses a polyamide elastomer synthesized by an esterified soft segment prepared from diacid and diol and an amide hard segment prepared from 4,4-diphenyltetraane diisocyanate and diacid. The diacid is an aliphatic diacid, and its hard segment is a semi-aromatic amide rather than an aliphatic amide, and the reaction is all carried out under a polar solvent. The removal process of the solvent in the later stage is quite complicated, and the reaction time is quite long, exceeding 20 hours above
[0008] At present, in the research of polyamide thermoplastic elastomers, there is no relevant report on the one-step synthesis process route using polyamide 6 as the hard segment

Method used

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  • A kind of preparation method of polyamide 6 thermoplastic elastomer resin
  • A kind of preparation method of polyamide 6 thermoplastic elastomer resin
  • A kind of preparation method of polyamide 6 thermoplastic elastomer resin

Examples

Experimental program
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Effect test

Embodiment 1

[0038] Add 10g of polyethylene glycol with a number average molecular weight of 1000, 90g of caprolactam, 3g of deionized water, 2g of phosphoric acid, and 10g of adipic acid into the reactor, heat up to 200°C under nitrogen protection, and react for 1 hour under mechanical stirring at 100rpm ; Then at 260°C, vacuumize to 20Pa and continue mechanical stirring at 100rpm for 3 hours, then extract with boiling water and dry.

Embodiment 2

[0040] Add 20g of polyethylene glycol with a number average molecular weight of 2000, 80g of caprolactam, 3g of deionized water, 3g of sulfuric acid, and 1g of adipic acid into the reactor, heat up to 240°C under nitrogen protection, and react for 1.5 hours under mechanical stirring at 800rpm ; Then at 260°C, vacuumize to 40Pa and continue mechanical stirring at 800rpm for 2.5 hours, then extract with boiling water and dry.

Embodiment 3

[0042] Add 30g of polytetrahydrofuran with a number average molecular weight of 4000, 70g of caprolactam, 2g of deionized water, 3g of aminocaproic acid, and 5g of adipic acid into the reactor. Under the protection of nitrogen, heat up to 220°C and react for 0.5 hours under mechanical stirring at 300rpm ; Then at 250°C, vacuumize to 80Pa and continue mechanical stirring at 300rpm for 2 hours, then extract with boiling water and dry.

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Abstract

The invention relates to a preparation method of a block copolymer thermoplastic elastomer resin containing a hard section composed of polyamide 6 and a soft section composed of polyether by a hydrolysis ring-opening one-step process, and a polyamide 6 thermoplastic elastomer resin prepared by the method. The method has the advantages of simple technique, easy feeding, controllable reaction, low raw material cost and high production efficiency. The obtained polyamide 6 elastomer resin has the advantages of higher molecular weight, favorable elasticity, high transparency, adjustable Shore hardness, high wear resistance, favorable silencing effect and small damping decrement.

Description

technical field [0001] The invention relates to a preparation method of polyamide 6 thermoplastic elastomer resin, in particular to a preparation method of low-cost polyamide 6 thermoplastic elastomer resin containing polyether block, specifically a hydrolysis ring-opening method A method for synthesizing a block copolymer thermoplastic elastomer resin containing a hard segment composed of polyamide 6 and a soft segment composed of polyether in one step, and the polyamide 6 thermoplastic elastomer resin obtained by the method. Background technique [0002] Polyamide thermoplastic elastomer, also known as TPAE, is an important variety of thermoplastic elastomer in polymer materials. This type of product combines the excellent mechanical properties, good high temperature resistance, excellent wear resistance and chemical corrosion resistance of polyamide engineering plastics, as well as the low temperature impact resistance, softness, ductility and resilience of ordinary elast...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G69/44C08L77/12
Inventor 张英伟姜立忠赵振伦陈亚宁冯清正
Owner 沧州旭阳化工有限公司
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