超高分子量聚乙烯/硅酸钙纳米复合材料：力学性能与摩擦学性能

UHMWPE/CaSiO Nanocomposite: Mechanical and Tribological Properties.

作者信息

Danilova Sakhayana N, Yarusova Sofia B, Kulchin Yuri N, Zhevtun Ivan G, Buravlev Igor Yu, Okhlopkova Aitalina A, Gordienko Pavel S, Subbotin Evgeniy P

机构信息

North-Eastern Federal University, 677000 Yakutsk, Russia.

Institute of Chemistry, Far Eastern Branch, Russian Academy of Sciences, 690022 Vladivostok, Russia.

出版信息

Polymers (Basel). 2021 Feb 14;13(4):570. doi: 10.3390/polym13040570.

This paper studied the effect of additives of 0.5-20 wt.% synthetic CaSiO wollastonite on the thermodynamic, mechanical, and tribological characteristics and structure of polymer composite materials (PCM) based on ultra-high-molecular weight polyethylene (UHMWPE). Using thermogravimetric analysis, X-ray fluorescence, scanning electron microscope, and laser light diffraction methods, it was shown that autoclave synthesis in the multicomponent system CaSO·2HO-SiO·nHO-KOH-HO allows one to obtain neeindle-shaped nanosized CaSiO particles. It was shown that synthetic wollastonite is an effective filler of UHMWPE, which can significantly increase the deformation-strength and tribological characteristics of PCM. The active participation of wollastonite in tribochemical reactions occurring during friction of PCM by infrared spectroscopy was detected: new peaks related to oxygen-containing functional groups (hydroxyl and carbonyl) appeared. The developed UHMWPE/CaSiO materials have high wear resistance and can be used as triboengineering materials.

本文研究了添加0.5-20 wt.% 合成硅酸钙硅灰石对基于超高分子量聚乙烯（UHMWPE）的聚合物复合材料（PCM）的热力学、力学和摩擦学特性及结构的影响。通过热重分析、X射线荧光分析、扫描电子显微镜和激光衍射法表明，在多组分体系CaSO·2H₂O-SiO₂·nH₂O-KOH-H₂O中进行高压釜合成可得到针状纳米尺寸的硅酸钙颗粒。结果表明，合成硅灰石是UHMWPE的有效填料，可显著提高PCM的变形强度和摩擦学特性。通过红外光谱检测到硅灰石在PCM摩擦过程中发生的摩擦化学反应中起到了积极作用：出现了与含氧官能团（羟基和羰基）相关的新峰。所开发的UHMWPE/CaSiO材料具有高耐磨性，可用作摩擦工程材料。