用修改蒙莫里隆石增强的EPDM纳米复合材料的特性
Zhanxu Li1, Zilong Chen1, Weichong Sun1
1State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China.
Polymers
|August 29, 2024
概括
研究人员开发了一种新方法,使用改性蒙莫里隆石 (MMT) 制造高性能乙烯二烯单体 (EPDM) 复合材料. 这种方法显著提高了EPDM的抗拉强度,为先进材料应用提供了具有成本效益的解决方案.
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
- 纳米技术 纳米技术
背景情况:
- 乙烯二烯单体 (EPDM) 是一种非极性,和弹性体,在经济上实现高性能方面存在局限性.
- 开发具有成本效益的填充剂和制备方法对于提高EPDM复合材料性能至关重要.
研究的目的:
- 提出一种有效和通用的方法来修改蒙莫里隆石 (MMT) 和制备高性能EPDM纳米复合材料.
- 克服填充剂聚合的挑战,并改善EPDM的机械性能.
主要方法:
- 用聚多巴胺 (PDA) 修改MMT的表面,以创建DMMT.
- 凝混合DMMT与固体EPDM. 凝混合DMMT与固体EPDM.
- 引入一种西兰合剂 (乙烯基trimethoxysilane) 在EPDM和DMMT之间形成共价键.
主要成果:
- 通过使用XRD,XPS,FTIR和TGA成功合成和表征DMMT.
- 与未经修改MMT的EPDM相比,EPDM/DMMT纳米复合材料的填充剂聚合显著减少.
- EPDM/DMMT复合材料的抗拉强度达到6.5 MPa,使用10 phr DMMT,比纯EPDM增加200%.
结论:
- 拟议的PDA修改MMT和随后的凝复合与西兰处理是生产高性能EPDM纳米复合材料的有效策略.
- 这种方法为经济增强EPDM机械性能提供了一条途径,解决了当前复合材料技术的局限性.
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