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纳米封闭释放通过更好的交互和纠,使聚合物接种的纳米粒子组件更加坚固

Arman Moussavi¹, Zhenghao Wu², Subhadeep Pal¹

¹Department of Civil and Environmental Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3109, United States.

|April 8, 2025

概括

聚合物移植纳米粒子 (PGNs) 增强机械性能,但可以降低性. 稀疏接种通过减少封闭来提高性,使强壮的纳米复合材料能够实现更好的粒子间相互作用和能量消耗.

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:

在无矩阵纳米复合材料中的聚合物移植纳米粒子 (PGNs) 提供了增强的机械性能.
高纳米粒子负载往往增加了刚性,但降低了聚合物的性.

研究的目的:

研究植入链长度,植入密度和纳米颗粒大小对玻璃式PGN系统在高张力率下机械性能的影响.
了解PGN中控制性的机制.

主要方法:

使用粗粒度的分子动力学模拟.
分析的重点是PGN结构与机械反应之间的关系.

主要成果:

的模量通常随着无机体积分数的增加而增加,但在高接种密度下显示出由于硬体阻碍的偏差.
稀疏接种的PGN由于降低了纳米限制而表现出优越的性,促进了聚合物刷间数字化和PGN间纠.
应变硬化和增强的性是由有效的PGN相互纠驱动的.

结论:

PGN结构显著影响机械性能,特别是性.
在稀疏移植的PGN中减少纳米封闭是实现高性的关键.
脱和链裂是主要的断裂机制,有助于PGN的能量消耗和性.

关键词:

扬格的模块是这样的:纠纠纠纠纠纳米封闭是指纳米封闭.聚合物植入的纳米粒子.性性性性

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