电泳烘烤对EP/CF及EP/CF/GF复合材料力学性能的影响  

Effect of electrophoretic baking on mechanical properties of EP/CF and EP/CF/GF composites

作　　者：崔晓凤 方梅 杜松林 张娜[1] 黄明[1] 高国利 许经纬 CUI Xiaofeng;FANG Mei;DU Songlin;ZHANG Na;HUANG Ming;GAO Guoli;XU Jingwei(Key Laboratory of Material Molding Process and Molding of Ministry of Education-National Engineering Research Center for Rubber Plastic Mould Technology,Zhengzhou University,Zhengzhou 450002,China;Shenzhen Silver Basis Technology Co,Ltd,Shenzhen 518108,China;Changzhou Hongfa Zongheng New Material Technology Co,Ltd,Changzhou 213135,China)

机构地区：[1]郑州大学材料成型及模具技术教育部重点实验室-橡塑模具国家工程研究中心,郑州450002 [2]深圳市银宝山新科技股份有限公司,广东深圳518108 [3]常州宏发纵横新材料科技有限公司,江苏常州213135

出　　处：《中国塑料》2024年第3期1-6,共6页China Plastics

基　　金：深圳市科技计划资助(CJGJZD20210408092602006);河南省重大科技专项(221100240400)。

摘　　要：采用真空辅助树脂传递模塑(VARTM)工艺制备了不同铺层方式的碳纤维增强聚合物基复合材料(CFRP):环氧树脂/碳纤维(EP/CF)和环氧树脂/碳纤维/玻璃纤维毡(EP/CF/GF)复合材料,重点研究了不同铺层纤维体系的CFRP渗透率以及电泳烘烤前后的力学性能变化,探究了其失效机理。结果表明,[±45°]铺层方式有利于体系中树脂的浸润,且加入GF能够明显提高体系的渗透率;电泳烘烤后,CF[0/90°]、CF[±45°]和CF/GF[±45°]的拉伸强度分别下降了15.65%、12.05%和6.77%,模量分别下降了9.08%、16.39%和10.04%,而CF/GF[0/90°]的拉伸强度和模量则分别提高了7.74%和6.95%;在弯曲性能方面,电泳烘烤后CF[0/90°]、CF/GF[0/90°]、CF[±45°]和CF/GF[±45°]的弯曲强度分别下降了7.62%、8.23%、15.89%和48.39%,模量分别降低了9.23%、3.69%、17.85%和34.38%;而电泳烘烤对4种材料的压缩性能影响较小;电泳后,CF[0/90°]和CF[±45°]的储能模量、损耗模量均有一定幅度提高,CF/GF[0/90°]和CF/GF[±45°]的储能模量、损耗模量均有下降。A series of CFRP with different laminating modes was prepared through VARTM,which included the EP/CF and EP/CF/GF composites.Their mechanical properties before and after electrophoretic baking were compared,and their failure mechanism was explored.The results indicated that the[±45°]laminating method and the addition of GF mat increased the permeability of the composite system significantly.After electrophoretic baking,the tensile strength of the CF[0/90°],CF[±45°],and CF/GF[±45°]composites decreased by 15.65%,12.05%,and 6.77%,respec⁃tively,and their modulus decreased by 9.08%,16.39%,and 10.04%,respectively.The tensile strength and modu⁃lus of the CF/GF[0/90°]composite increased by 7.74%and 6.95%,respectively.According to the flexural perfor⁃mance after electrophoretic baking,the flexural strength of the CF[0/90°],CF/GF[0/90°],CF[±45°],and CF/GF[±45°]composites decreased by 7.62%,8.23%,15.89%,and 48.39%,respectively,and their modulus de⁃creased by 9.23%,3.69%,17.85%,and 34.38%,respectively.There was little effect of electrophoretic baking on the compression performance of these four composite systems.After electrophoretic baking,the energy storage modulus and loss modulus of the CF[0/90°]and CF[±45°]composites increased,whereas the CF/GF[0/90°]and CF/GF[±45°]composites showed a decrease in these two moduli.

关 键 词：碳纤维增强聚合物 真空辅助树脂传递模塑 渗透率 电泳烘烤 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]