文献类型：期刊文献

英文题名：Fabrication of polyphosphazene covalent triazine polymer with excellent flame retardancy and smoke suppression for epoxy resin

作者：Fang, Yunzhi[1];Miao, Junshuai[1];Yang, Xingwen[1];Zhu, Yun[1];Wang, Guiyou[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat, Shanghai 200237, Peoples R China

年份：2020

卷号：385

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20195207905269);WOS:【SCI-EXPANDED(收录号:WOS:000507465200060)】；

基金：The authors acknowledge the financial support from Shanghai Brightfield Chemicals Co. Ltd., China. The authors wish to thank Associate Prof. Dr. Yun Ding and Prof. Dr. Aiguo Hu for their kindly assistance.

语种：英文

外文关键词：Covalent triazine polymer; Phosphazene derivative; Epoxy resin; Fire safety; Smoke suppression

摘要：A kind of polyphosphazene covalent triazine polymer (PCTP) was fabricated through a facile trimerization reaction of 4-hydroxybenzonitrile substituted hexachlorocyclotriphosphazene (HCCP). The as-prepared PCTP containing phosphorus and nitrogen elements was added into epoxy resins (EP) to improve their fire resistance and smoke suppression property. As obtained from cone calorimeter test, compared with the neat EP, the values of peak heat release rate (P-HRR), total heat release (THR) and total smoke production (TSP) of EP@PCTP composites were reduced by 73%, 69% and 42%, respectively, when 8.7 phr PCTP was loaded into the EP matrix. Meanwhile, the limiting oxygen index (LOI) value was also increased greatly from 22.3% to 28.0%, and the EP composites successfully passed UL-94 V-0 rating with 6.4 phr PCTP incorporated. The results may be resulted from the more compact and higher coherence char layer of EP@PCTP composites, and PCTP could function both in condensed and gaseous phases due to the barrier effect and dilution effect during the combustion. The water resistance of the EP matrix was also enhanced effectively due to the presence of PCTP. In addition, the nearly unchanged glass transition temperature (T-g) and mechanical properties of the resultant EP@PCTP composites confirmed the excellent compatibility between PCTP and EP matrix, which endows its promising application potential in polymer materials.