高模量阻尼复合材料的制备及性能研究∗

摘要

通过一种带功能基团的多嵌段聚合物 PB-MA-b-PGMA-b-PDMS-b-PGMA-b-PBMA[1](自制)与环氧树脂(TDE-85)在固化剂间苯二胺的作用下固化形成大分子聚合物,同时分别使用 Al2 O3和碳纤维(400)进行补强,进行不同配比对比实验,制备一种高模量阻尼复合材料,并研究了它的性能.多嵌段聚合物、环氧树脂与碳纤维补强剂之间的宏观相容性较好,尤其是加入碳纤维粉后,体系中3种组分协同作用,材料表现良好的阻尼性能,tanδ＞0．3的温域约为50℃(70~120℃),且最大值达到1．2.还可以通过调节配方来获得不同性能的阻尼材料.制备的阻尼材料具有良好的热学性能,分解温度达到250℃.%With a functional group multiblock polymers through PBMA-b-PGMA-b-PDMS-b-PGMA-b-PBMA [1](self-made)and epoxy resin (TDE-85)in the curing agent curing two between benzene amine formed under the action of high molecular polymer.At the same time,using Al2 O3 and carbon fiber (400)strengthen it,make different ratio of contrast experiments,the preparation of a high modulus and damping of composite materials, and study its properties.Multiblock polymer,epoxy resin and carbon fiber between reinforcing agent macro good compatibility,especially with carbon fiber powder,three component synergy system,the material behaves good damping performance.The temperature range of tanδ>0.3 is about 50 ℃(70-120 ℃),and the maximum value reached 1.2.We also can be adjusted by the formula to obtain the damping materials with different properties. The damping material we prepared has good thermal properties,decomposition temperature reached 250 ℃.