挤压力对GO-CF混杂增强复合材料形状记忆性能的影响  

Effect of extrusion pressure on shape memory properties ofGO-CF hybrid reinforced composites

作　　者：郑武强 王浩 马玉钦 韩玉朋 虢海银 Zheng Wu-qiang;Wang Hao;Ma Yu-qin;Han Yu-peng;Guo Hai-yin(Mechanical and Electrical Engineering Department,Henan Vocational College of Water Conservancy and Environment,Henan Zhengzhou 450008,China;School of Construction Machinery,Chang′an University,Shaanxi Xi′an 710064,China;School of Mechano-Electronic Engineering,Xidian University,Shaanxi Xi′an 710126,China)

机构地区：[1]河南水利与环境职业学院机电工程系,河南郑州450008 [2]长安大学工程机械学院,陕西西安710064 [3]西安电子科技大学机电工程学院,陕西西安710126

出　　处：《炭素技术》2024年第4期35-42,共8页Carbon Techniques

基　　金：河南省高等学校重点科研项目计划支持(23A460033);河南省重点研发与推广专项(科技攻关)支持项目(222102230099);河南省职业教育教学改革研究与实践项目(豫教[2023]03173);陕西省自然科学基础研究计划面上项目(2023JC-QN-0083);教育部产学合作协同育人项目(220506298133407)。

摘　　要：探究不同挤压力对GO-CF混杂增强复合材料形状记忆性能的影响,采用真空浸渗热压成型工艺,分别在0.3~0.9 MPa挤压力下制备了7组形状记忆复合材料,并对其浸渗规律、形状变形区微观机理、固定率、回复率、回复力及回复时间进行分析。实验结果表明:随着挤压力的增加,固定率、回复率和最大回复力呈现出先增加后减小的趋势,而回复时间则呈先减小后增加的趋势。在0.7 MPa的挤压力下,GO-CF混杂增强复合材料具备理想的浸渗效果,且具备良好的形状记忆性能,固定率为99.68%,回复率为99.31%,最大回复力为7.5 N。过小或过大的挤压力会导致浸渗效果不佳、基体团聚、基体与纤维的结合性能下降。To explore the influence of different extrusion pressures on the shape memory properties of GO-CF hybrid reinforced com⁃posites,7 groups of shape memory composites were prepared under extrusion pressures of 0.3~0.9 MPa by vacuum infiltration and hot pressing processes,and their infiltration rules,shape deformation zone microscopic mechanism,fixation rate,recovery rate,recovery force and recovery time were analyzed.The experimental results show that with the increase of extrusion pressure,the fixed rate,recovery rate and maximum recovery force increase first and then decrease,while the recovery time decreases first and then increases.Under extrusion pressure of 0.7 MPa,GO-CF hybrid reinforced composite has ideal infiltration effect,and has good shape memory per⁃formance with the fixed rate of 99.68%,the recovery rate of 99.31%,and the maximum recovery force of 7.5 N.Too small or too large extrusion pressure will lead to poor infiltration effect,matrix agglomeration,and matrix and fiber bonding properties decline.

关 键 词：挤压力 炭纤维复合材料 氧化石墨烯 形状记忆 微观组织 

分 类 号：TB332[一般工业技术—材料科学与工程]