期刊
ACS APPLIED POLYMER MATERIALS
卷 1, 期 10, 页码 2713-2722出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsapm.9b00668
关键词
benzoxazine; norbornene; phthalonitrile; polybenzoxazine; thermoset; flame retardancy
资金
- National Natural Science Foundation of China (NSFC) [51603093]
- Natural Science Foundation of Jiangsu Province [BK 20160515]
( )Phthalonitrile polymers exhibit many attractive advantages including high thermal and mechanical properties, low water absorptivity, and excellent flame retardancy. However, the poor processability requiring high temperature polymerization for long duration seriously impedes their further applications. In this work, a benzoxazine monomer bearing both norbornene and phthalonitrile functionalities (oHPNI-apn) has been synthesized, and its chemical structure has been confirmed by NMR, FT-IR, and elemental analysis. In addition, the polymerization behavior of oHPNI-apn has been systematically studied using DSC, in situ FT-IR and solid-state C-13 NMR analysis. The phthalonitrile in this developed thermosetting system can be thermally induced polymerized at a relatively lower temperature with no added catalysts, which indicates the existence of self-catalyzed effect during the terpolymerization of oHPNI-apn. Moreover, oHPNI-apn-based thermoset is found to possess excellent thermal stability and outstanding flame retardancy, with extremely high T-g temperature (419 degrees C), very high char yield value (68%, at 800 degrees C in N-2), and extraordinarily low heat release capacity (25.1 J/(g K)) in the absence of any added antiflammable additives.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据