邻苯二甲腈
固化(化学)
邻苯二甲酸锌
热稳定性
材料科学
高分子化学
傅里叶变换红外光谱
聚合物
苯并环丁烯
化学
化学工程
酞菁
复合材料
有机化学
纳米技术
工程类
作者
Dianqiu Jia,Jianxin Rong,Minjie Wu,Xinggang Chen,Xiaoyan Yu,Qingxin Zhang
标识
DOI:10.1002/slct.202302860
摘要
Abstract A novel phthalazine‐based phthalonitrile resin was prepared by two different curing procedures. The phthalonitrile monomer, namely, 4,4′‐(((phthalazine‐1,4‐diylbis(oxy))bis(3,1‐phenylene))bis(oxy))diphthalonitrile (PDOP), was synthesized from the reaction of 1, 4‐dichloropthalazine, resorcinol, and 4‐nitrophthalonitrile. Its curing behavior and curing kinetics with 4‐(4‐aminophenoxy)phthalonitrile (APPH) were investigated by Differential Scanning Calorimetric (DSC). Isoconversional method based on Starink was applied to analyze the curing process of PDOP/APPH. The PDOP monomer exhibits a low melting point (89 °C) and a wide processing window (146 °C). The PDOP polymer mainly forms triazine, isoindoline, and phthalocyanine structure, as revealed by Fourier Transform Infrared (FTIR) spectroscopy, and its properties improved with the increase of post‐curing temperature and curing time. After post‐curing at 350 °C, the polymer has high storage modulus (3313 MPa), high glass‐transition temperature (380 °C), and outstanding thermal stability and thermal oxidation stability.
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