Amino-functionalized carbon nanotubes/polyphosphazene hybrids for improving the fire safety and mechanical properties of epoxy  

作　　者：Mutian Zhou Desen Zeng Shuilai Qiu Xia Zhou Liang Cheng Zhoumei Xu Weiyi Xing Yuan Hu 

机构地区：[1]State Key Laboratory of Fire Science,University of Science and Technology of Chin1,96 Jinzhai Road,Hefei,Anhui,230026,China [2]Innovation Center,Midea Residential Air Conditioner Division,Midea Group,China

出　　处：《Progress in Natural Science:Materials International》2022年第2期179-189,共11页自然科学进展·国际材料（英文版）

基　　金：Youth Innovation Promotion Association CAS(2019448);Fundamental Research Funds for the Central Universities(WK2480000007,WK2320000047,and WK2320000043);Excellent Young Scientist Training Program of USTC(KY2320000018);National Natural Science Foundation of China,51973203.

摘　　要：To expand further modern industrial applications of epoxy resin(EP),the urgent problems of flammability and poor mechanical properties have to be solved.Therefore,amino-functionalized carbon nanotubes(AFP@CNTs)was designed and successfully synthesized to enhance the comprehensive properties,including fire safety and mechanical properties.Especially,the flame retardant mechanism,the combustion and pyrolysis process of EP/AFP@CNTs were investigated as well.With the addition of 1.5 wt%AFP@CNTs,the peak heat release rate(PHRR)and total heat release(THR)of EP were reduced by 27.6%and 29.0%,respectively,which may due to the cooperative effect between the phosphorus-nitrogen synergistic flame retardant of polyphosphazene and the cohesive phase flame retardant of carbon nanotubes.In addition,the mechanical performance of EP/AFP@CNTs composites were also investigated.The results showed that the impact strength,tensile strength and the storage modulus effectively increased by 65.0%,29.0%and 13.2%,respectively.Meanwhile,the change of the combustion and pyrolysis process of EP/AFP@CNTs may be attributed to the catalytic effect of the amino-functionalized polyphosphazene,which could participate in the formation of epoxy thermal curing crosslinking network and catalyze the degradation process of epoxy resin.

关 键 词：composites FUNCTIONAL CARBON 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]