以碳纤维和铜纤维为原料制备了3维4层深交联机织物,将酚醛树脂和其他填料组成树脂体系,并与深交联机织物进行复合成型,制成3维深交联摩擦材料。通过改变织物纬向的铜纤维含量及位置得到4种深交联机织物摩擦材料,探究不同位置和含量的铜纤维对摩擦材料氧化机理的影响。结果表明:当铜纤维在预制体层向分布不同时,发现氧化质量损失率表现为3-Q=3-S<3-Z=3-B,可见铜纤维会在摩擦材料的表层和中间层产生明显的差异;铜纤维在摩擦材料两个表面可以很有效地将高温从摩擦材料中辐射出去,对摩擦材料起到保护作用,可以有效阻止高温情况下空气对摩擦材料的破坏;温度升高过程中碳纤维不断氧化致使其变成非石墨碳,质量逐步减小。
Three-dimensional four-layer deep crosslinked fabric was prepared by using carbon and copper fiber as raw materials.The resin system was composed of phenolic resin and other filler materials and compounded with deep crosslinked fabric to form 3-D deep cross-linked friction material.The effects of different position and content of copper fiber on the oxidation mechanism of material were investigated by changing the content and location of copper fiber in the weft direction of fabric.The results showed:when the distribution of copper fiber in the preform layer was different,found that the oxidation weight loss was 3-Q=3-S <3-Z=3-B,copper fiber in the friction material surface and the middle layer there were significant differences.Copper fiber in the friction surface of two materials can be very effective from the high temperature radiation from the friction material.The friction material played a protective effect,can effectively prevent the case of high temperature air friction material damage.During the process of increasing the temperature,the carbon fiber was continuously oxidized to become non-graphite carbon,and the quality was gradually reduced.
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基金资助
江苏高校优势学科建设工程(PAPD);江苏省自然科学基金-青年基金(BK20160157);中央高校基本科研业务费专项资金(JUSRP41501);江苏省研究生培养创新工程(KYLX15-1182);江苏省产学研联合创新资金-前瞻性联合研究项目(BY2015019-33)
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