聚合物的西兰合剂处理对砂可加工性,强度和界面显微特性的影响
Chengyan Hou1, Haibo Zhang1,2
1School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China.
Materials (Basel, Switzerland)
|December 9, 2023
概括
像KH550和KH171这样的Silane合剂改变了聚合物的湿透性,提高了砂的性能. 通过优化界面过渡区 (ITZ),KH550修改显著提高了砂的强度,并减少了孔隙性.
科学领域:
- 材料科学 材料科学 材料科学
- 土木工程 土木工程是指土木工程.
- 表面化学 表面化学
背景情况:
- 聚合物表面特性显著影响水泥复合材料的性能.
- 控制聚合物湿度对于优化界面过渡区 (ITZ) 至关重要.
- 西兰合剂提供了一种修改聚合表面特征的方法.
研究的目的:
- 调查连剂 (KH550和KH171) 对聚合物表面湿透性的影响.
- 阐明聚合物表面特性与砂接口特征之间的关系.
- 揭示改性聚合物接口增强砂宏观性质的机制.
主要方法:
- 使用3-aminopropyltriethoxysilane (KH550) 和vinyltrimethoxysilane (KH171) 的聚合物的表面修饰.
- 通过FT-IR,XPS,接触角测量和吸水试验来表征聚合物表面特性.
- 使用MIP,SEM,BSE和纳米痕测试对接口特性进行评估,然后进行砂性能测试.
主要成果:
- 西兰基的修改显著改变了聚合物表面的湿透性,KH171产生了比KH550.0更高的接触角.
- 改性聚合物表现出降低的水友性,导致吸水率降低,改善了砂可加工性.
- 修改KH550的结果是压力强度增加了10%,毛孔性减少了11.6%,ITZ弹性模量增加了42.3%.
结论:
- 西兰合剂有效控制聚合物表面的湿透性,减少水友性.
- 优化聚合物-水泥矩阵接口,通过修改化物是提高砂机械性能的关键.
- 由于有利的ITZ特性,KH550修改提供了对砂强度和耐久性的卓越改进.
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