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采用填充聚合法制备了相变颗粒改性聚酰胺复合材料.在摩擦速率为6~24 m/s条件下的测试结果表明:相比纯聚酰胺,所得聚酰胺复合材料具有明显更低的摩擦系数和磨损率,并且对摩擦速率呈现一定的自适应性.当复合材料中相变颗粒含量较少时(质量分数5%),复合材料对摩擦速率的自适应能力较弱,而当复合材料中相变颗粒含量较多时(质量分数10%),复合材料的自适应能力较强.纯聚酰胺的磨损模式为严重的黏着磨损;5%相变颗粒改性聚酰胺复合材料呈现典型的磨粒磨损和轻微的黏着磨损,而10%相变颗粒改性聚酰胺复合材料以轻微的磨粒磨损和轻微的疲劳磨损共存.
The phase-change particle-modified polyamide composites were prepared by a filler polymerization method.The results of the tests at a frictional rate of 6-24 m / s showed that the polyamide composites had significantly lower friction than pure polyamides Coefficient and wear rate, and exhibit some self-adaptability to the friction velocity.When the content of phase-change particles in the composite is low (5%), the self-adaptability of the composite to the friction velocity is weak, When the content of phase change particles is larger (mass fraction 10%), the self-adaptability of the composites is stronger.The wear mode of pure polyamide is severe adhesive wear, and the 5% phase-change particle modified polyamide composite exhibits typical wear Particle wear and slight adhesive wear, while 10% phase-change particle-modified polyamide composites coexist with slight abrasive wear and slight fatigue wear.