材料科学
阻燃剂
可燃性
硅橡胶
复合材料
烧焦
制作
多孔性
天然橡胶
硅酮
表面改性
化学工程
热解
医学
替代医学
病理
工程类
作者
Haiyang Chen,Yang Li,Peng-Huan Wang,Zhang‐Hao Qu,Yue Qin,Ling Yang,Jiayun Li,Lei Gong,Li Zhao,Guodong Zhang,Jiefeng Gao,Long‐Cheng Tang
标识
DOI:10.1016/j.compositesa.2023.107907
摘要
Silicone rubber foam (SiRF) is a promising porous material that is widely applied in various fields. However, its intrinsic flammability nature remains a significant challenge. One of the simplest and most economical solutions is to incorporate high content flame-retardant fillers. Unfortunately, such approach is limited by several drawbacks, including poor filler dispersion, difficulty in processing and negative effect on mechanical flexibility. Herein, we report a green and facile strategy for surface-assembling ultralow content of MXene sheets bonded onto the pore surface of SiRF via the effective foaming reaction process. The as-prepared MSiRF-0.2 composite at 0.2 wt% MXene exhibited lightweight characteristic, wide-temperature mechanical flexibility, UL94-V0 grade, limited oxygen index of >27%, and exceptional smoke suppression (reduction by 88.24%). Furthermore, flame-retardant mechanism was discussed based on the char structure observation. This study provides a novel approach for fabricating mechanically flexible and flame-retardant SiRF via in-situ reactive assembly of low content MXene sheets.
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