Synergistic effect of intumescent flame retardant system consisting of hexophenoxy cyclotriphosphazene and ammonium polyphosphate on methyl ethyl silicone rubber

被引：25

作者：

Qi, Jiajia ^{[1
]}

Wen, Qingzhen ^{[1
]}

Zhu, Jinhua ^{[1
]}

机构：

[1] Naval Univ Engn, Dept Basic, Wuhan 430033, Hubei, Peoples R China

来源：

MATERIALS LETTERS | 2019年 / 249卷

关键词：

Flame retardant; Hexophenoxy cyclotriphosphazene; Ammonium polyphosphate; Silicon rubber; Thermal analysis; Polymers; PHOSPHORUS;

D O I：

10.1016/j.matlet.2019.04.053

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In order to improve the flame retardancy of methyl ethyl silicone rubber (VMQ), the synergistic effect of an intumescent flame retardant (IFR) system consisting of hexophenoxy cyclotriphosphazene (HPCP) and ammonium polyphosphate (APP) was investigated. The results showed that with a total loading of 30 wt% IFR, the flame-retarded VMQ composite got the highest limiting oxygen index (LOI) of 30.6% and UL-94V-0 rating at mass ratio of HPCP and APP of 1:1. Meanwhile, the flame retardancy index (14.88) indicated that the synergistic effect of the system was excellent. Then digital photographs, SEM images and FTIR spectra of residue chars obtained from the CC test demonstrated the flame retarding mechanism in the condensed phase. In addition, mechanisms were also discussed based on TG and Py-GCMS results. (C) 2019 Elsevier B.V. All rights reserved.

引用

页码：62 / 65

页数：4

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