低温耐磨高承载复合材料座的研制与性能

Preparation and Properties of Wear Resistant Composite Material Seat under Low Temperature and Load

首先进行了低温耐磨材料选型,在超高分子量聚乙烯、聚四氟乙烯、碳纤维增强耐磨材料、玻璃纤维增强耐磨材料等四种耐磨材料中,通过性能对比优选聚四氟乙烯作为耐磨材料,其次运用模压一体化成型方法将耐磨材料与耐低温复合材料复合研制了一种耐低温承载耐磨复合材料座。最后对产品进行各种性能测试,低温下摩擦性能以及力学性能优异,性能测试结果满足技术要求。产品界面强度优异,经过10000次低温承载疲劳试验后,耐磨层与复合材料的抗拉载荷大于7 kN;产品模拟实际工况通过了10000次低温承载摩擦疲劳试验,且试验后质量、尺寸稳定,耐磨层与复合材料粘接牢固。

Firstly,the selection of wear resistant materials were took,polytetrafluoroethylene(PTFE)was selected as optimal wear resistant material by performance comparison from the four types of materials of ultra high molecular weight polyethylene,PTFE,carbon fiber reinforced wear resistant material and glass fiber reinforced wear resistant material.Secondly,a kind of low temperature bearing wear resistant composite seat was developed by combining wear resistant material with low temperature resistant composite material through compression molding.Lastly,the performancs of the product was tested,which show excellent performance of wear resistant and mechnical properties under low temperature and load,all performance tests meet the technical requirements.The product shows excellent interface strength,and the tensile load between wear resistant layer and composite material is higher than 7 kN after 10000 cycles of the low temperature load fatigue test.Futhermore,the product passes 10000 cycles of the low temperature bearing friction fatigue test,which simulates actual working condition,after the test,the quality and size of pruduct are stable,and the wear-resistant layer is firmly bonded with the composite material.