树脂基复合材料高温老化后低速冲击行为

李过; 孙耀宁; 王国建

doi:10.13568/j.cnki.651094.651316.2020.04.29.0003

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树脂基复合材料高温老化后低速冲击行为

工程技术 | 更新时间：2026-01-21

- 树脂基复合材料高温老化后低速冲击行为
- 树脂基复合材料高温老化后低速冲击行为
- 新疆大学学报（自然科学版中英文） 2021年38卷第4期页码：499-506
- 作者机构：
  
  新疆大学机械工程学院
- 作者简介：
- 基金信息：
  
  国家自然科学基金(51465055)
- DOI：10.13568/j.cnki.651094.651316.2020.04.29.0003
  中图分类号： TB332;TQ327.1
- 纸质出版：2021
- 稿件说明：
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[1]李过,孙耀宁,王国建.树脂基复合材料高温老化后低速冲击行为[J].新疆大学学报(自然科学版)(中英文),2021,38(04):499-506.
[1]李过,孙耀宁,王国建.树脂基复合材料高温老化后低速冲击行为[J].新疆大学学报(自然科学版)(中英文),2021,38(04):499-506. DOI： 10.13568/j.cnki.651094.651316.2020.04.29.0003.

DOI：10.13568/j.cnki.651094.651316.2020.04.29.0003.

摘要

为探究玻璃纤维增强环氧乙烯基酯树脂基复合材料(GF/EVE)在120℃高温环境下不同老化时间后的低速冲击特性

采用人工加速老化试验和低速冲击试验

基于扫描电镜(SEM)、红外测试(FTIR)和XPS表征手段研究了GF/EVE复合材料的老化机制.研究发现:树脂基体发生了热氧老化降解;高温老化造成树脂分子链的断裂

树脂交联密度降低

导致树脂初始分解温度下降;其次随老化时间增加试样冲击凹坑深度逐渐增大;同时测得了不同老化时间下不同冲击能量的冲击载荷-时间曲线

发现GF/EVE试样所承受的最大冲击载荷随老化时间的增加而下降

并且随着冲击能量的增大

同等老化条件下试样所承受的最大冲击载荷增大.

Abstract

To explore the low velocity impact characteristics of glass fiber-reinforced epoxy vinyl ester resin matrix composites(GF/EVE) after aging at 120 ℃high temperature for different times

artificial accelerated aging test and low velocity impact test were used based on scanning electron microscope(SEM)

Infrared testing(FTIR)and XPS characterization methods to study the aging mechanism of GF/EVE composites. The study found that the resin matrix has undergone thermal oxygen aging degradation; high temperature aging causes the breakage of the resin molecular chain

and the resin crosslinking density decreases

resulting in a decrease in the initial decomposition temperature of the resin; secondly

as the aging time increases

the depth of the sample impact pit gradually increases; the impact load-time curves of different impact energies were measured under different aging times. It was found that the maximum impact load experienced by the GF/EVE sample decreased with the increase of the aging time

and as the impact energy increased

the test under the same aging conditions the maximum impact load on the sample increases.

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