在聚合物/化纳米板复合材料中的共价结合接口,提高了机械和热性能
Ankur Chaurasia1, Kaushlendra Kumar2, S P Harsha2
1Mechanical Engineering Department, School of Technology Pandit Deendayal Energy University, 382007, India. ankur.chaurasia@sot.pdpu.ac.in.
Physical chemistry chemical physics : PCCP
|November 14, 2023
概括
提高纳米复合材料的性能,这项研究化学修饰六角化 (BN) 纳米片. 共价键显著提高了BN增强聚乙烯的机械强度和热性能.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
- 纳米技术纳米技术
背景情况:
- 差散和弱的界面粘附性限制了六边形化 (BN) 纳米板增强聚合物纳米复合材料的性能.
- 在纳米填充剂-矩阵接口的有效负载转移对于增强材料性能至关重要.
研究的目的:
- 通过增强BN纳米板和聚合物基质之间的接口来提高高密度聚乙烯 (HDPE) 纳米复合材料的机械和热性能.
- 研究化学功能化和共价键对BN/HDPE纳米复合材料分散和特性的影响.
主要方法:
- 使用西兰基 (3-aminopropyl) tri-ethoxy西兰基的BN纳米片的化学修饰.
- 三种纳米复合材料类型的制造:非结合接口 (p-BN/PE,s-BN/PE) 和共聚结合接口 (PE-g-BN).
- 使用泽塔电位分析进行表征,以评估分散,并测试机械和热性质.
主要成果:
- 用西兰功能化的BN纳米板在聚合物基质中表现出稳定的悬浮和均的分散.
- 与未结合接口相比,具有共聚结合接口的纳米复合材料在拉伸和屈曲强度上显示出超过100%的改善.
- 聚乙烯在结合接口样本中的状结构有助于增强机械强度.
结论:
- 联界面粘合是一种高度有效的策略,用于改善BN/HDPE纳米复合材料的机械性能.
- 接口粘合的类型,BN含量和工作温度显著影响纳米复合材料的导热性.
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