异丙氧基官能化聚芳酰胺高温热处理高效制备聚对苯撑苯并双噁唑

doi:10.3969/j.issn.1000-1093.2019.09.016

兵工学报 ›› 2019, Vol. 40 ›› Issue (9): 1911-1917.doi: 10.3969/j.issn.1000-1093.2019.09.016

异丙氧基官能化聚芳酰胺高温热处理高效制备聚对苯撑苯并双噁唑

陈凤贵^1,2，高镱萌²，桂佳欣¹，吕利平¹

（1.长江师范学院化学化工学院重庆市无机特种功能材料重点实验室，重庆 408100；2.中国科学院重庆绿色智能技术研究院，重庆 400714）

收稿日期:2018-11-19 修回日期:2018-11-19 上线日期:2019-10-31
作者简介:陈凤贵（1983—），男，副教授，博士。 E-mail: fgchen@yznu.cn
基金资助:
国家自然科学基金项目（51303206）；重庆市教育委员会科技项目（KJ1601209）；重庆市技术创新与应用示范项目（cstc2018jscx-msyb1317）

Preparation of Poly(p-phenylene Benzobisoxazole) by High Temperature Thermal Treatment of Isopropoxy FunctionalizedAromatic Polyamides

CHEN Fenggui^1,2， GAO Yimeng², GUI Jiaxin¹, L Liping¹

(1.Chongqing Key Laboratory of Inorganic Special Functional Materials,College of Chemistry and Chemical Engineering, Yangtze Normal University, Chongqing 408100, China; 2.Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China)

Received:2018-11-19 Revised:2018-11-19 Online:2019-10-31

摘要/Abstract

摘要： 针对高性能纤维聚对苯撑苯并双噁唑（PBO）现有制备方法单体合成困难、聚合工艺复杂及纺丝难度大等问题，采用高温热处理方法制备PBO. 合成4,6-二异丙氧基-1,3-二氨基苯作为单体，将其与对苯二甲酰氯缩聚制得PBO前驱体-异丙氧基官能化聚芳酰胺；该前驱体通过静电纺丝制成纳米纤维薄膜，并在350 ℃与氩气气氛等条件下，通过热处理成功实现了前驱体主链的分子内环化、制得目标PBO，制备出的PBO具有高达562 ℃的热降解温度。该方法摆脱了对传统易氧化4,6-二氨基-间苯二酚单体的依赖，显著降低了聚合和成型难度，丰富了PBO的制备方法学。

关键词: 高性能纤维, 聚芳酰胺, 热处理, 前驱体, 聚对苯撑苯并双噁唑

Abstract: 4,6-diamino-1,3-dihydroxy-benzene (DAR) used as monomer for the synthesis of high-performance poly (p-phenylene benzobisoxazole) (PBO) is easily oxidized and difficultly synthesized by traditional method, and the polymerization process is complicated and the spinning operation is also difficult. A novel method was developed to synthesize PBO by high temperature thermal treatment of isopropoxy functionalized aromatic polyamide, which was prepared by polycondensation of 4,6-diisopropoxy-1,3-diamine-benzene and terephthalic chloride. And the obtained PBO exhibits excellent thermal degradation temperature up to 562 ℃. The proposed method is used to avoid DAR by replacement of the more stable monomer as 4,6-diisopropoxy-1,3-diamine-benzene, greatly simplify the polymerization process for the improved solubility of monomer and polymer, and easily spin the obtained PBO precursor into nanofibers. Key

Key words: high-performancefiber, aromaticpolyimide, thermaltreatment, precursor, poly(p-phenylenebenzobisoxazole)

中图分类号:

O633.5

陈凤贵，高镱萌，桂佳欣，吕利平. 异丙氧基官能化聚芳酰胺高温热处理高效制备聚对苯撑苯并双噁唑[J]. 兵工学报, 2019, 40(9): 1911-1917.

CHEN Fenggui， GAO Yimeng, GUI Jiaxin, L Liping. Preparation of Poly(p-phenylene Benzobisoxazole) by High Temperature Thermal Treatment of Isopropoxy FunctionalizedAromatic Polyamides[J]. Acta Armamentarii, 2019, 40(9): 1911-1917.

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第40卷第9期
2019 年9月兵工学报ACTA
ARMAMENTARIIVol.40No.9Sep. 2019

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异丙氧基官能化聚芳酰胺高温热处理高效制备聚对苯撑苯并双噁唑

Preparation of Poly(p-phenylene Benzobisoxazole) by High Temperature Thermal Treatment of Isopropoxy FunctionalizedAromatic Polyamides

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