南京大学学报（自然科学版）2024，Vol.60Issue(2)：345-355,11.DOI:10.13232/j.cnki.jnju.2024.02.015
基体配比对VIHPS制备GO-CF/EP复合材料微观组织与形状记忆性能的影响
Effect of matrix ratio on microstructure and shape memory properties of GO-CF/EP composites prepared by VIHPS
摘要
Abstract
Due to their benefits including light weight and strong designability,carbon fiberhybrid reinforced composites have been used in numerous industries including the automotive,marine,and aerospace sectors.According to the ratio formula of epoxy resin and curing agent,the optimal ratio of graphene-carbon fiber hybrid reinforced resin matrix(GO-CF/EP)composite was calculated as 1:5,and six ratios of 1∶2～1∶7 were prepared by vacuum infiltration hot pressing process(VIHPS).Combined with shape memory performance test and microscopic morphology observation,it was possible to achieve the ideal ratio of curing agent to epoxy resin.The experimental findings demonstrate that the degree of cross-linking in the system has a major influence on the characteristics of GO-CF/EP composites.The higher the degree of cross-linking,the better the shape memory performance and the ideal microstructure of the composites.When the matrix ratio is 1:5,the microstructure of the GO-CF/EP composite system is uniform and dense,the cross-linking degree is the highest,the shape fixation rate is the highest(95.90％),the shape recovery rate was the largest 95.40％.Shape recovery time was the shortest,80.30 s;the shape recovery force is the largest,9.48 N.When the matrix ratio is 1∶2 or 1∶7,the curing agent is excessive or insufficient,the cross-linking degree is small,and there are a large number of matrix accumulation region in the microstructure.The shape memory performance decreased,and the shape fixation rate and recovery rate decreased correspondingly,which were 82.99％,81.66％,81.91％and 78.75％,respectively.The shape recovery force is only 5.20 N and 5.50 N,respectively.关键词
石墨烯-碳纤维混杂增强树脂基复合材料/交联度/真空浸渗热压成型工艺/基体配比/形状记忆性能Key words
graphene-carbon fiber hybrid reinforced resin matrix composite/crosslinking degree/vacuum infiltration hot pressing process/matrix ratio/shape memory performance分类
化学引用本文复制引用
马玉钦,吕晋书,阮鸥,徐津,任斌,王刚锋,庞利沙..基体配比对VIHPS制备GO-CF/EP复合材料微观组织与形状记忆性能的影响[J].南京大学学报（自然科学版）,2024,60(2):345-355,11.基金项目
公共大数据国家重点实验室开放基金(PBD2022-019),长安大学中央高校基本科研业务费专项资金(300102253105),陕西省自然科学基础研究计划(2022JM-265),教育部产学合作协同育人项目(220506298133407),河南省教育厅2023年度高等学校重点科研项目(23A460033),陕西省"十四五"教育科学规划2022年度课题(SGH22Y1274) （PBD2022-019）
