环境自适应聚合物自润滑复合材料的蓄能机理和摩擦学行为研究

项目名称： 环境自适应聚合物自润滑复合材料的蓄能机理和摩擦学行为研究

项目编号： No.51305431

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 机械、仪表工业

项目作者： 张新瑞

作者单位： 中国科学院兰州化学物理研究所

项目金额： 25万元

中文摘要： 随着我国航空、航天、海洋工程事业的迅速发展，对运动部件的可靠性及寿命提出了更高的要求,运动机构涉及的聚合物密封材料的蓄能补偿性和摩擦学性能是制约其高可靠性及长寿命的关键因素之一。聚合物密封材料的环境自适应性、摩擦学行为、机械性能和蓄能自补偿性能之间的相关研究比较少，材料在多环境因素耦合下摩擦过程中的能量转换机理也缺乏探讨。本项目拟以形状记忆聚氨酯密封材料为研究对象，针对其在服役过程中，环境可靠性差，高磨损，低蓄能、密封失效的问题，重点研究聚氨酯材料结构组分对其蓄能性的影响、蓄能性与其摩擦磨损特性之间的关系，以及多环境因素耦合对密封界面自补偿性和摩擦磨损性能的影响机理。本项目的研究成果将为解决制约高可靠、长寿命聚合物密封材料设计的技术难题提供理论指导，拓展形状记忆聚合物摩擦副在密封系统上的应用，具有重要的理论和现实意义。

中文关键词： 形状记忆聚合物；自适应；自润滑；蓄能机理；摩擦学行为

英文摘要： With the rapid development of Chinese aviation, space industry and ocean engineering, higher reliability and life about the moving parts involved in the servomechamism are required，and the Energy storage and tribological behavior of dynamic seals institutions has been one of important factors that limit its reliability and life. However, there are few studies describing the correlation of self-adaption, friction and wear, mechanical properties and energy storage mechanism of polymer sealing composites. There was still a lack of research on the energy conversion in the friction process under more environmental factors. This project takes shape memory polyurethane composites as the research subject and makes investigation of the increase in abrasion and decline in sealing reliability and life in the course of service, and inspects the influence of the structure of polyurethane on the energy storage ability and relation between the energy storage ability and the friction and wear behavior with emphasis, and explore the influence mechanism of many couple environmental factors on the self compensation of seal inteface and the tribological behavior.The study offers the theoretical proof of the key technique of restricting high reliability and long life of polymer sealing composites, and expands the use of shape memory

英文关键词： shape memory polymer composite；self-adaption；self-lubrication；energy storage mechanism；tribological behavior