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使用硬碳微填充剂增强低密度聚乙烯的tribological特性

Samuel Solomon¹, Rachel Hall², Jibao He³

¹Department of Chemical and Biomolecular Engineering, Tulane University, 6823 St. Charles Ave., New Orleans, LA 70118, USA.

Materials (Basel, Switzerland)

|April 13, 2024

概括

这项研究通过添加碳球 (CSs) 来增强低密度聚乙烯 (LDPE),显著提高其机械强度,减少摩擦和磨损. 优化的LDPE/CS复合材料显示了潜在的新应用的显著性能增长.

科学领域:

材料科学材料科学材料科学
聚合物工程聚合物工程
部落学 (tribology) 是一个学科.

背景情况:

低密度聚乙烯 (LDPE) 仅限于包装,因为其机械和 tribological 性能差.
提高LDPE的性能对于扩大其应用范围至关重要.
碳球 (CSs) 提供了加强聚合物矩阵的潜力.

研究的目的:

为了提高LDPE的机械强度,摩擦特性和耐磨性.
研究碳球集成对LDPE特性的影响.
为了评估在不同条件下LDPE/CS复合材料的tribological性能.

主要方法:

制造的LDPE/CS复合材料具有不同的CS度 (0.5-8重量%).
使用SEM,拉曼光谱,XRD和机械测试分析了微结构,热和机械性能.
在不同的表面粗,负载和速度条件下评估了tribological性能.

主要成果:

在没有显著的微观结构变化的情况下,CS成功地集成到LDPE矩阵中.
热稳定性和结晶性分别增加了4%和7%.
硬度和Young的模量提高了高达4%和24%.
通过添加CS,摩擦和磨损显著减少,8%的复合材料显示了75%的摩擦和78%的磨损减少.
表面粗度通过最大限度地减少接触面积和粘合力,对减少摩擦产生重大影响.

结论:

集成碳球有效地增强了LDPE的机械和tribological特性.
在需要提高强度和耐磨性的应用中,LDPE/CS复合材料具有显著的潜力.
优化的复合材料配方可以大幅减少摩擦和磨损,扩大LDPE的实用性超出包装范围.

关键词:

粘附性粘附性粘附性粘附性的结点的结点变形变形的情况干燥摩擦干燥摩擦分子间相互作用的分子间相互作用.聚合物复合物的复合物.实际接触区域是真实的接触区域.剪切力是一种剪切力.剪切压力的压力.表面的粗度表面的粗度

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