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用纳米 Si O2 填充 PA1 0 1 0制备了尼龙复合材料 ,并用 MM- 2 0 0磨损试验机对尼龙复合材料与 45钢在干摩擦条件下的摩擦磨损实验进行了实验 .研究表明 ,纳米 Si O2 填充 PA1 0 1 0大幅度提高了尼龙复合材料的耐磨性 ,降低了摩擦系数 .纳米 Si O2 填充量在 1 0 %左右时 ,尼龙复合材料达到最低摩擦系数 0 .32和最低磨损量 0 .2 mg,磨损量比纯 PA1 0 1 0降低了 60多倍 ,摩擦系数降低了 1倍 .对纳米 Si O2 填充尼龙的磨损机理研究发现 ,纳米 Si O2 填充尼龙复合材料的磨损机理受滑动速度和接触载荷影响比较大 .当摩擦副 PV值小于 60 Nm/ s时 ,尼龙复合材料的磨损机理主要是切削和粘着磨损 .当摩擦副 PV值大于 60 Nm/ s时 ,磨损机理转变为疲劳剥层或熔融流变 ,导致磨损量急剧增长 .
Nylon Si O2 filled with PA1 0 10 nylon composites were prepared and the friction and wear tests of nylon composites and 45 steel under dry tribological conditions were carried out with a MM-200 abrasion tester.The results show that nano-Si O2 PA1 0 1 0 filled nylon composite material to improve the wear resistance and reduce the friction coefficient.When the nano-Si O2 filling amount is about 10%, the nylon composite material achieves the minimum friction coefficient of 0.32 and the minimum wear amount of 0. 2 mg, the abrasion loss was reduced more than 60 times and the friction coefficient was reduced by a factor of 1. Compared with pure PA1 0 1 0, the friction coefficient decreased by 1. The study on the wear mechanism of nano-Si O2 filled nylon found that the wear mechanism of nano-Si O2 filled nylon composites was affected by the sliding speed and When the PV value of the friction pair is less than 60 Nm / s, the wear mechanism of the nylon composite is mainly cutting and adhesive wear.When the PV value of the friction pair is greater than 60 Nm / s, the wear mechanism changes to fatigue peel Or melt rheology, resulting in a dramatic increase in wear.