摘要
聚合物互穿网络(IPNs),结构可调且设计性强,是制备具有阻尼减振效果兼具海水润滑特性复合材料的一种有效选择.本研究中设计合成了一系列组成成分不同的基于聚四氢呋喃二元醇(PTMG)-聚氨酯(PU)/聚甲基丙烯酸甲酯(PMMA)的互穿网络结构(IPNs),并系统研究了PU/PMMA IPNs在海水润滑条件下的摩擦学性能及其阻尼性能.结果表明:随着PU含量的增加,其摩擦系数和磨损率均显著降低,当PU与PMMA的组成比例为60/40时,复合材料的摩擦系数降低至0.15,质量磨损率0.10%;同时材料的阻尼因子从0.77降至0.24,有效阻尼温域从40℃降至25℃,阻尼性能呈下降趋势.
Because of its adjustable and designable structure,interpenetrating polymer networks（IPNs）,were a good choice as lubricating materials with excellent damping properties.A series of poly（tetramethylene glycol）（PTMG）-based polyurethane（PU）/polymethyl methacrylate（PMMA） IPNs were prepared.The tribological behaviour and damping properties of the IPN composites were studied systematically in terms of composition.Results reveal that the tribological properties of PU/PMMA composites under seawater lubrication were improved as PU content increased.When the PU content was 60%,the friction coefficient was as low as 0.15 and the mass loss was 0.10%.The damping properties were decreased with increasing PU content.For PU content from 30% to 70%,the loss factor decreased from 0.77 to 0.24,and the damping temperature range decreased from 40 ℃ to 25 ℃.
出处
《摩擦学学报》
EI
CAS
CSCD
北大核心
2018年第1期1-7,共7页
Tribology
基金
国家自然科学基金项目(51303189
U1630128)
国家重点研发计划(2016YFF0101000)资助~~
关键词
互穿网络聚合物
摩擦学性能
阻尼性能
interpenetrating polymer works
tribological properties
damping properties
