短切碳纤维增强环氧树脂形状记忆复合材料的制备与性能研究  

Preparation and Performance of Short Carbon Fiber Reinforced Shape Memory Epoxy Composites

作　　者：罗发祥 魏要强 武南 宋世彬 邵一川 LUO Faxiang;WEI Yaoqiang;WU Nan;SONG Shibin;SHAO Yichuan(Metal Rubber Engineering Research Center,School of Mechanical Engineering and Automation,Fuzhou University,Fuzhou 350108;Aerospace Research Institute of Materials&Processing Technology,Beijing 100076)

机构地区：[1]福州大学机械工程及自动化学院金属橡胶工程研究中心,福州350108 [2]航天材料及工艺研究所,北京100076

出　　处：《宇航材料工艺》2023年第3期60-67,共8页Aerospace Materials & Technology

基　　金：国家自然科学基金青年科学基金项目(12002088)。

摘　　要：为实现形状驱动能耗与复合材料力学性能的最佳配合,本文在热致环氧形状记忆聚合物基体中提高增韧剂新戊二醇二缩水醚(NGDE)含量来降低其玻璃化转变温度,同时添加短切碳纤维(SCF)来抵消由增韧剂引起的刚度降低负面效果。通过实验研究了不同NGDE、SCF含量对复合材料形状记忆转变温度、形状记忆性能和力学性能的影响。结果表明,增加NGDE含量可将环氧聚合物基体的形状记忆转变温度从90℃降至43℃,其储能模量和弯曲模量也随之降低。在11wt%NGDE上添加SCF后,复合材料的玻璃态储能模量、橡胶态储能模量、弯曲模量最高可提高至原始试样的1.9倍、7倍和2.4倍。In order to achieve the optimum combination of the energy cost for shape recovery and the mechanical performance of composite materials.In this paper,the content of toughening agent Neopentyl Glycol Diglycidyl Ether(NGDE)is increased in the thermotropic epoxy shape memory polymer matrix to reduce its glass transition temperature,and Short Carbon Fiber(SCF)is added to compensate the stiffness reduction caused by toughening agents.The effects of different contents of NGDE and SCF on the shape memory transition temperature,shape memory properties and mechanical performance of the composites were investigated.The results show that increasing the NGDE content can reduce the shape memory transition temperature of the epoxy polymer matrix from 90℃to 43℃,and the storage modulus and flexural modulus are synchronously decreased.By adding SCF in the 11%wt NGDE containing sample,the glassy storage modulus,rubbery storage modulus,and flexural modulus of the composites can be increased to 1.9 times,7 times,and 2.4 times of the original ones.

关 键 词：环氧形状记忆复合材料 短切碳纤维 形状记忆转变温度 储能模量 弯曲模量 

分 类 号：TB332[一般工业技术—材料科学与工程]