中国塑料 ›› 2024, Vol. 38 ›› Issue (3): 1-6.DOI: 10.19491/j.issn.1001-9278.2024.03.001

• 材料与性能 •    下一篇

电泳烘烤对EP/CF及EP/CF/GF复合材料力学性能的影响

崔晓凤1, 方梅1, 杜松林1, 张娜1(), 黄明1, 高国利2, 许经纬3   

  1. 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
  • 收稿日期:2023-08-09 出版日期:2024-03-26 发布日期:2024-03-28
  • 通讯作者: 张娜,高级实验师,研究领域:纤维增强复合材料的制备与应用,zhangna163163@163.com
    E-mail:zhangna163163@163.com
  • 基金资助:
    深圳市科技计划资助(CJGJZD20210408092602006);河南省重大科技专项(221100240400)

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

CUI Xiaofeng1, FANG Mei1, DU Songlin1, ZHANG Na1(), HUANG Ming1, GAO Guoli2, XU Jingwei3   

  1. 1.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
    2.Shenzhen Silver Basis Technology Co,Ltd,Shenzhen 518108,China
    3.Changzhou Hongfa Zongheng New Material Technology Co,Ltd,Changzhou 213135,China
  • Received:2023-08-09 Online:2024-03-26 Published:2024-03-28
  • Contact: ZHANG Na E-mail:zhangna163163@163.com

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。

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

Abstract:

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 %, respectively, and their modulus decreased by 9.08 %, 16.39 %, and 10.04 %, respectively. The tensile strength and modulus of the CF/GF[0/90 °] composite increased by 7.74 % and 6.95 %, respectively. According to the flexural performance 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 decreased 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.

Key words: carbon fiber reinforced plastic, vacuum?assisted resin transfer molding, permeability, electrophoretic baking

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