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通过硅氧烷改性的环氧树脂具有较高的断裂韧性。本研究考察了钢球在环氧树脂面上滑动,以及环氧树脂栓在玻璃盘或钢盘上滑动这样两种摩擦方式下的摩擦磨损性能,並对磨损面的形态作了比较。试验结果表明,试件结构对硅氧烷改性剂之效应有很大的影响。作者认为,这是由于随作用在聚合物上的摩擦学应力不同和聚合物机械性能不同而有不同的磨损机理的结果。硅氧烷改性剂的效应在钢球—环氧树脂盘结构中是比较明显的,磨损率对固化时析出的弹性体颗粒大小及其间隔极为敏感。
Silicone-modified epoxies have higher fracture toughness. In this study, the friction and wear properties of the steel balls sliding on the epoxy surface and the two frictional modes of the epoxy plug sliding on the glass or steel disk were investigated. The morphology of the worn surface was compared. The experimental results show that the structure of the sample has a great effect on the effect of the silicone modifier. The authors believe that this is the result of a different mechanism of wear due to different tribological stresses acting on the polymer and different mechanical properties of the polymer. The effect of the silicone modifier is evident in the steel ball-epoxy disk structure, which is very sensitive to the size and spacing of elastomeric particles precipitated during curing.