摘要
为改善聚合物材料的火灾安全性,利用二硫化钼(MoS_(2))的独特性能,结合纳米复合、催化成炭等设计思路,采用共沉淀法制备CeMnO_(x)-MoS_(2)和CeFeO_(x)-MoS_(2)双金属氧化物-MoS_(2)纳米杂化物,并将其分别应用到2种典型聚合物(聚氨酯和环氧树脂)中。结果表明:2种杂化物均匀分散在聚合物基体中,可有效延缓聚合物材料的热降解速率、提高残炭率,复合材料燃烧时释放的可燃性气体以及CO等毒性气体和烟密度明显降低,火灾安全性能明显提高。
In order to improve fire safety of polymer materials,considering unique properties of molybdenum disulfide(MoS_(2)),and based on nanocomposite and catalytic carbonization technology,CeMnO_(x)-MoS_(2) and CeFeO_(x)-MoS_(2) nanohybrids were synthesized by co-precipitation method and then incorporated into two typical polymer matrices(Thermoplastic polyurethane and Epoxy resin).The results indicate that the two kinds of nanohybrids are uniformly distributed in polymer matrix,which effectively delays thermal degradation of polymer materials and increases char residues at high temperature.Moreover,the addition of nanohybrids leads to the decreases of flammable gas,CO and smoke density during combustion of polymer composites,indicating significant improvement of fire safety performance.
作者
周克清
翟丹阳
印恋
桂宙
ZHOU Keqing;ZHAI Danyang;YIN Lian;GUI Zhou(Faculty of Engineering,China University of Geosciences(Wuhan),Wuhan Hubei 430074,China;State Key Laboratory of Fire Science,University of Science and Technology of China,Hefei Anhui 230026,China)
出处
《中国安全科学学报》
CAS
CSCD
北大核心
2022年第1期102-109,共8页
China Safety Science Journal
基金
国家自然科学基金资助(22005277,52074247)
安徽省自然科学基金资助(2008085ME180)
广州市科技计划项目(201806010113)
火灾科学国家重点实验室开放课题(HZ2020-KF10)。
