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含有改性SiO的聚氨弹性体的增强机械和介电性能₂

Miaomiao Qian¹, Xinru Wang¹, LiYang Yao¹

¹College of Chemistry, Jilin University, Changchun 130012, China.

|December 2, 2024

概括

改性纳米颗粒可以增强聚氨.

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:

聚氨 (PU) 是一种多功能聚合物,在各种领域都有应用.
提高PU的介电性质和机械特性对于先进的应用至关重要.
现有的修改PU的方法往往涉及复杂的过程或损害某些特性.

研究的目的:

开发一种新的,简单的方法来提高介电常数和降低聚氨的弹性模量.
为了研究将改性纳米颗粒 (NSiO2) 纳入聚氨矩阵的效果.
为了提高聚氨的机电灵敏度和电分解强度.

主要方法:

合成的改性纳米粒子 (NSiO2).
使用简单的方法将NSiO2纳入聚氨矩阵中.
描述了由此产生的PU/NSiO2复合材料的结构,介电,机械和电性能.

主要成果:

纳入NSiO2破坏了PU中的键,增加了链极化性和介电常数.
添加NSiO2通过破坏PU硬域来降低弹性模量.
在10^3 Hz的电机学灵敏度上获得了60%的增强.
证明了强大的电分解强度,PU/NSiO2-3达到145.12 MV/m (1.6倍于纯PU).

结论:

改性纳米颗粒的整合提供了一种有效的策略,可以同时提高聚氨的介电常数和电分解强度.
开发的PU/NSiO2复合材料表现出改进的机电性能和优越的电绝缘性能.
这种方法为设计用于苛刻应用的先进聚氨材料提供了新的途径.

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