NEW FLUORINATED POLYPYRROLONE WITH HIGH HEAT RESISTANCE ——SYNTHESIS AND CHARACTERIZATION

LIU Jingang; WANG Lifang; YANG Haixia; LI Yanfeng; FAN Lin; YANG Shiyong

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NEW FLUORINATED POLYPYRROLONE WITH HIGH HEAT RESISTANCE ——SYNTHESIS AND CHARACTERIZATION

Research Article | 更新时间：2021-03-19

- NEW FLUORINATED POLYPYRROLONE WITH HIGH HEAT RESISTANCE ——SYNTHESIS AND CHARACTERIZATION
- Acta Polymerica Sinica Issue 3, Pages: 394-400(2004)
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- Published：20 June 2004，
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LIU Jingang, WANG Lifang, YANG Haixia, LI Yanfeng, FAN Lin, YANG Shiyong. NEW FLUORINATED POLYPYRROLONE WITH HIGH HEAT RESISTANCE ——SYNTHESIS AND CHARACTERIZATION. [J]. Acta Polymerica Sinica (3):394-400(2004)
DOI：

LIU Jingang, WANG Lifang, YANG Haixia, LI Yanfeng, FAN Lin, YANG Shiyong. NEW FLUORINATED POLYPYRROLONE WITH HIGH HEAT RESISTANCE ——SYNTHESIS AND CHARACTERIZATION. [J]. Acta Polymerica Sinica (3):394-400(2004) DOI：

摘要

通过改进的Chichibabin反应合成了主链含有吡啶单元的新型含氟四胺单体

6-双 (3′

4′-二氨基苯基 ) 4 (3″

5″-双三氟甲苯基 )吡啶 (6FPA) .利用 6FPA与芳香族二酐单体-3

3′

4′-二苯醚四羧酸二酐 (ODPA)通过两步热环化工艺制备了新型聚吡咙 (Polypyrrolone

PPy)化合物 .对其所进行的各种性能测试结果表明

这种主链含有刚性吡啶结构、侧链带有含氟取代基的芳杂环高分子材料不仅保持了其固有的耐热性能

而且具有优良的成膜性能与耐水解性能 .例如其起始热分解温度为558℃

失重 10 %温度为 591℃

720℃时的残余重量百分数为68%

玻璃化转变温度为318℃ .PPy薄膜在10%NaOH水溶液中水解7天仍具有良好的耐热性能与柔韧性.

Abstract

A fluorinated polypyrrolone (Pry) derived from a new aromatic tetraamlne

6-bis(3’

4’- diaminophenyl)-4-[3”

5″-bis (trifluoromethylphenyl)] pyridine (6FPA)

which was synthesized by the Chiehibabin’sreaction

and the aromatic dianhydride ODPA by a two-step polyeondensation procedure was synthesized and characterized The flexible and tough films prepared by casting from the precursor solutions PAAA．followed by thermal dehydrating

showed good thermal stability with thermal decomposition temperature of 544℃

10％ weight loss temperature of 591℃

glass transition temperature of 318℃ and weight retention ratio of 68％ at 720℃．The PPy films exhibited exceflent alkaline-aqueous-repellent properties and retained most of the properties even after boiling in 10％ NaOH solutions for seven days

which made it a good candidate for protecting coating applications．

关键词

芳杂环高分子聚吡咙四胺三氟甲基耐高温

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