摘要
用N,N’-二-(4,6-二氯-[1,3,5]-三嗪)-己二胺(TCTHDM)对氧化石墨烯(GO)进行改性,制得改性氧化石墨烯(T-GO),以4,4’-二氨基二苯醚(ODA)和均苯四甲酸酐(PMDA)为单体,加入改性氧化石墨烯T-GO,通过原位聚合法制得T-GO/聚酰亚胺(PI)复合材料。对产物的形貌、结构和性能进行了表征和测试。结果表明,T-G0的引入提高了PI的力学性能、热稳定性和介电性能,降低了吸水率。当T-GO质量分数为1.5%时,复合材料拉伸强度达126.9 MPa,比P I提高了55.7%;吸水率由3.65%降至0.92%,起始分解温度(5%质量分解率)比PI提高了5.8℃;当T-G0质量分数为2.0%时,介电常数(0.1 MHz)比PI提高了83.1%。
The modified Graphene Oxide(T-GO)was synthesized with Graphene Oxide(GO)and N,N’-b is-(4,6-dichloro-1,3,5-triazin-yl)-Hexanediamine(TCTHDM),then the composites of T-GO/PI was prepared with 4,4'-Diaminodiphenyl Ether(ODA),Pyromellitic Anhydride(PMDA)and T-GO through in-situ Polymerization.The morphology,structure and properties of relative products were characterized and tested.The results showed that the introduction of T-GO improves the mechanical properties,thermal stability,dielectric properties of PI,decreases the water absorbency of PI.Tensile strength of the composites is 126.9 MPa,55.7% which is higher than PI,water absorbency is decreased from 3.65% to 0.92%,initial decomposition temperature(mass decomposition rate is 5%)of the composites is 5.8 ℃ which is higher than PI when mass fraction of T-GO is 1.5%.Dielectric constant(0.1 MHz)of the composites is 83.1% which is higher than PI when mass fraction of T-GO is 2.0%.
作者
宋军旺
郭睿
SONG Jun-wang;GUO Rui(School of Chemical Engineering,Shaanxi Energy Institute,Xianyang 712000,China;Key Laboratory of Auxiliary Chemistry and Technology in Light Industiy,Ministry of Education,Shaanxi University of Science and Technology,Xi'an 710021,China)
基金
2017年陕西重点研发计划项目(项目编号:2017GY-185)。
