CIESC Journal ›› 2023, Vol. 74 ›› Issue (2): 871-882.DOI: 10.11949/0438-1157.20221229

• Material science and engineering, nanotechnology • Previous Articles     Next Articles

Study on curing phthalonitrile resin with novel poly(phthalazinone ether nitrile)

Yue HU1,2(), Shoujun MA1, Xigao JIAN1, Zhihuan WENG1()   

  1. 1.State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials Oriented Chemical Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China
    2.Shanxi Xinhua Chemical Defense Equipment Research Institute Co. , Ltd. , Taiyuan 030000, Shanxi, China
  • Received:2022-09-09 Revised:2022-12-06 Online:2023-03-21 Published:2023-02-05
  • Contact: Zhihuan WENG

新型聚芳醚腈固化邻苯二甲腈树脂的研究

胡月1,2(), 马守骏1, 蹇锡高1, 翁志焕1()   

  1. 1.大连理工大学化工学院,精细化工国家重点实验室,智能材料化工前沿科学中心,辽宁 大连 116024
    2.山西新华防化装备研究院有限公司,山西 太原 030000
  • 通讯作者: 翁志焕
  • 作者简介:胡月(1993—),女,硕士研究生,645912857@qq.com
  • 基金资助:
    国家自然科学基金项目(51673033);中央高校基本科研业务费专项资金(DUT20TD114)

Abstract:

A amino-terminated poly(phthalazinone ether nitrile) (A-PPEN) was prepared by a two-step one-pot method. It had better thermal stability than the commonly used aromatic diamine curing agent 4,4'- diaminodiphenylsulfoxide (DDS). The curing process of A-PPEN for resorcinole-based phthalonitrile resin precursor (DPPH) was studied by differential scanning calorimetry (DSC). The results showed that the curing system had the characteristics of autocatalytic curing, and the feeding ratio of A-PPEN would affect the curing activity of the system. In addition, the rheological properties and thermal stability of the curing system were studied. The results showed that the resin had a maximum 5% mass loss temperature (Td5%) of 552.9℃, a char yield (Cy800) of 78.6% at 800℃, and a minimum viscosity of 0.06 Pa·s. The resin had excellent thermal stability and a wide processing temperature window.

Key words: poly(phthalazinone ether nitrile), phthalonitrile, high-temperature resistant, kinetics, polymers, chemical processes

摘要:

通过两步一锅法制备了氨基封端的新型杂萘联苯聚芳醚腈(A-PPEN),其具有比常用的芳香二胺固化剂4,4′-二氨基二苯砜(DDS)更为优异的热稳定性。采用差示扫描量热法(DSC)研究了A-PPEN对间苯二酚基邻苯二甲腈树脂前体(DPPH)的固化过程,结果显示该固化体系具有自催化固化的特征,A-PPEN的投料比会影响体系的固化活性。另外研究了该固化体系的流变特性和热稳定性,结果表明树脂的5%热失重温度(Td5%)最高可达552.9℃,800℃时残炭率(Cy800)为78.6%,最低黏度可至0.06 Pa·s,具有优异的热稳定性和较宽的加工温度窗口。

关键词: 聚芳醚腈, 邻苯二甲腈, 耐高温, 动力学, 聚合物, 化学过程

CLC Number: