THE EFFECT OF PEEK STRUCTURE ON THE FLOW AND THERMAL PROPERTIES

CAO Jun-kui; HUANG Zhi-hua; WU. Zhong-wen

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THE EFFECT OF PEEK STRUCTURE ON THE FLOW AND THERMAL PROPERTIES

Research Article | 更新时间：2021-03-19

- THE EFFECT OF PEEK STRUCTURE ON THE FLOW AND THERMAL PROPERTIES
- Acta Polymerica Sinica Issue 1, Pages: 27-33(1994)
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- Published：20 February 1994，
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CAO Jun-kui, HUANG Zhi-hua, WU. Zhong-wen. THE EFFECT OF PEEK STRUCTURE ON THE FLOW AND THERMAL PROPERTIES. [J]. Acta Polymerica Sinica (1):27-33(1994)
DOI：

CAO Jun-kui, HUANG Zhi-hua, WU. Zhong-wen. THE EFFECT OF PEEK STRUCTURE ON THE FLOW AND THERMAL PROPERTIES. [J]. Acta Polymerica Sinica (1):27-33(1994) DOI：

摘要

本文用稍过量４、４’－二氯苯酮合成的聚醚醚酮（ＰＥＥＫ）样品，利用ＵＶ、ＭＩ、ＤＳＣ和ＴＧＡ等研究本氧阴离子及其相对浓度在树脂合成和加工过程中对ＰＥＥＫ分子结构和性能的影响．结果表明：苯氧阴离子端基引起支化交联反应，且随着其相对浓度增加而增加．采用过量４、４’－二氯苯酮合成ＰＥＥＫ，不仅能控制产物的分子量，而且有利于抑制支化交联反应，提高ＰＥＥＫ的流动性和热稳定性．本文还初步探讨了ＰＥＥＫ支化反应机理和支化高分子热分解机理．

Abstract

EEK has been synthesize by polycondensation of excess 4

4'-diflu oro benzo phen o ne (DFBP) with hydroqulnone in diphenyl sulfo ne. B yusing UV

TGA and DSC techniques

the effects of phenoxide groups andits relative concentration on the structure and propenies of PEEK during Synthsisand processing have been studied. The results showed that the phenoxide groupscould lead to branching and cross--linking

and this increased with its relativeconcentration. We can control the molecular weight of product by synthesizing PEEK with excess DFBP

it also helps to preventing side reactions such as branching and crosslinking

and inproving the flow and thermal properties of PEEK. We also discuss in this paper the mechanism of the branching reaction and the mechanism of the thermal degradation of branched PEEK cahin.

关键词

聚醚醚酮结构苯氧阴离子流动性能热性能

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