含有微填充剂的碳纤维增强烯酸复合材料的动态冲击性能
Ibraheem A Abdulganiyu1, Oluwasegun E Adesola1, Ikechukwuka N A Oguocha1
1Department of Mechanical Engineering, University of Saskatchewan, Saskatoon, SK S7N 5A9, Canada.
Polymers
|July 29, 2023
概括
在碳纤维增强的复合材料中添加碳化碳微填充剂显著提高了动态冲击性能,在具体的填充度下观察到最佳改善,具体取决于树脂类型和冲击能量. 合体二氧化没有显示任何益处.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物复合材料 聚合物复合材料
- 机械工程 机械工程
背景情况:
- 碳纤维增强聚合物 (CFRP) 越来越多地使用纳米和微填充剂进行修改,以提高静态机械性能而不会增加重量.
- 对于含有这些填充剂的CFRP的高应变速率变形行为,人们的理解有限.
研究的目的:
- 研究用微填充剂修改的碳纤维增强复合材料 (CFRPC) 的动态冲击性能.
- 在动态冲击条件下,评估碳化 (SiC) 和化微填充剂对CFRPCs的影响.
主要方法:
- 使用二维织造的碳纤维,两种性复合树脂 (HRJ-15881,SP-6877) 和不同数量 (0.0-2.0重量%) 的SiC或合体二氧化制造CFRPC.
- 动态冲击测试使用分裂-霍普金森压力棒 (SHPB) 在15公斤米/秒和28公斤米/秒的动量.
- 使用光学立体显微镜和扫描电子显微镜 (SEM) 进行损伤分析.
主要成果:
- 在SiC微填料中,HRJ-15881复合材料的冲击性能在15公斤米/秒时提高了高达1.5%的重量%,SP-6877复合材料的冲击性能提高了高达0.5%的重量.
- 在28公斤米/秒时,冲击性能改善,SiC在两种树脂中高达0.5%的重量.
- 在测试的动量时,合物二氧化并没有增强任何树脂的动态冲击特性.
- 由SiC引起的改善归因于增强的结晶性;损伤模式因冲击动量和填充物负载而变化.
结论:
- 碳化微填充器可以有效地提高CFRPC的动态冲击性能,最佳度取决于树脂基质和冲击能量.
- C微填料的晶体结构在提高抗冲击性方面发挥着至关重要的作用.
- 合体二氧化对于增强这些CFRPC的动态冲击性能是无效的.
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