兼容剂是否提高了碳纤维增强复合材料的性能?
Prashant Gangwani1,2, Mitjan Kalin1, Nazanin Emami2
1Laboratory for Tribology and Interface Nanotechnology, University of Ljubljana, 1000 Ljubljana, Slovenia.
Polymers
|January 17, 2024
概括
兼容剂改善了硫化聚烯 (PPS) 混合物,但在超高分子量聚乙烯 (UHMWPE) 复合材料中无效. 以环氧基的Joncryl是提高PPS材料机械性能的唯一有效选择.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
背景情况:
- 兼容剂对于改善聚合物混合物和复合材料的性能至关重要.
- 溶剂制造工艺为材料合成提供了独特的优势.
研究的目的:
- 为了评估通过溶剂加工生产的UHMWPE和PPS-PTFE系统中以马氏无水化物 (MAH) 接种的聚乙烯和以环氧基相容剂 (Joncryl) 的有效性.
- 确定兼容剂对机械性能的影响,了解它们的功能机制.
主要方法:
- 使用溶剂制造工艺制备超高分子量聚乙烯 (UHMWPE) 和硫化聚烯加聚四乙烯 (PPS-PTFE) 复合材料.
- 作为兼容剂,将持有者移植的线性低密度聚乙烯 (LLDPE) 和高密度聚乙烯 (HDPE) 以及以环氧基为基础的Joncryl纳入.
- 评估机械性能 (冲击强度,硬度) 和使用热和化学分析进行表征.
主要成果:
- 基于环氧的Joncryl增强了PPS-PTFE混合物和纤维增强PPS的机械性能,充当链延长器并改善了纤维矩阵接口.
- 基于MAH的兼容剂显示出有限的效用,在UHMWPE组合物中观察到的效果是微不足道的或有害的,特别是当加强时.
- 兼容剂在UHMWPE组合物中是不活跃的,这可能是由于与溶剂工艺的不兼容性和聚合物集成不良.
结论:
- 兼容剂的有效性高度依赖于聚合物矩阵和成分复杂性.
- 基于环氧的Joncryl是基于PPS的材料的有希望的兼容剂,但其在UHMWPE中的应用需要进一步调查.
- 与制造方法和聚合物矩阵的不兼容性问题限制了某些兼容剂的更广泛适用性.
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