Nano(FGP/h-BN)/IFR/EP复合材料固化过程动力学及热性能对比

The Curing Kinetics and Thermal Performance Comparison of Nano(FGP/h-BN)IFR/EP Composites

将石墨(FGP)、氮化硼(h-BN)两种材料同时进行微波剥离,制备出Nano-FGP/h-BN复合物,再将其与环氧树脂/膨胀阻燃(EP/IFR)复合材料进行协效阻燃,制备出阻燃型EP复合材料。前期研究表明二元Nano-FGP/h-BN体系对EP复合材料的阻燃性能有所提升,为深入探究二元Nano-FGP/h-BN体系对EP复合材料的影响,研究了二元Nano-FGP/h-BN体系对EP复合材料的固化动力学以及热性能的影响。结果表明,添加了2%二元Nano-FGP/h-BN后,与EP/IFR复合材料相比活化能小幅度提升,室温下的储能模量提高了42%。

In this work,graphite(FGP)and boron nitride(h-BN)were peeled by microwave at the same time to prepare Nano-FGP/h-BN.The flame retardant EP composites were prepared by synergistic flame retardant of Nano-FGP/h-BN and EP/IFR composites.In the early stage of this work,it was concluded that the flame retardant properties of EP composites were improved by binary Nano-FGP/h-BN system.To further study the EP composites on this basis,the curing kinetics and curing kinetics of EP composites by binary Nano-FGP/h-BN system were studied.Scanning electron microscope was used to observe the cross-section morphology of EP composites.And the results show that the binary Nano-FGP/h-BN has toughening effect on EP and its composites.Comparing with EP/IFR composites,the storage modulus at room temperature increases by 42%after adding binary Nano-FGP/h-BN by using dynamic thermal analyzer.The results show that the activation energy of EP composite containing Nano-FGP/h-BN increases slightly.