纳米颗粒增强摩擦材料摩擦学性能研究
发布时间：2018-12-13 08:22
【摘要】：以丁腈橡胶改性酚醛树脂为基体,芳纶纤维、玻璃纤维为增强纤维,选用不同类型的纳米颗粒作为填料设计摩擦材料组分配比,并通过热压烧结制备摩擦材料。通过摩擦磨损试验机测试其在干摩擦条件下的摩擦学性能,并用扫描电镜(SEM)对材料的磨损形貌进行观察分析,以研究不同类型的纳米颗粒对摩擦材料性能的影响。研究表明:在干摩擦条件下,经过纳米颗粒改性的摩擦材料摩擦系数、硬度比未改性的材料有不同程度的提高,同时磨损率有很大程度的降低;纳米颗粒改性的摩擦材料摩擦系数、磨损率变化趋势具有一致性,均随着实验载荷、滑动速度的增大而逐渐减小;纳米颗粒改性后的摩擦材料磨损机理表现为疲劳磨损与磨粒磨损并存,而未改性的材料磨损机理主要表现为疲劳磨损。
[Abstract]:The friction materials were prepared by hot pressing sintering with acrylic rubber modified phenolic resin as matrix, aramid fiber and glass fiber as reinforced fibers, different types of nano-particles as fillers to design the distribution ratio of friction materials. The tribological properties of the materials under dry friction were tested by a friction and wear tester. The wear morphology of the materials was observed and analyzed by scanning electron microscope (SEM) in order to study the effect of different types of nanoparticles on the properties of friction materials. The results show that the friction coefficient of the friction material modified by nano-particles under dry friction condition can improve the hardness and decrease the wear rate of the unmodified material to some extent. The friction coefficient and wear rate of the friction materials modified by nano-particles have the same trend and decrease gradually with the increase of the experimental load and the sliding speed. The wear mechanism of the friction materials modified by nano-particles is the coexistence of fatigue wear and abrasive wear, while the wear mechanism of unmodified materials is mainly fatigue wear.
【作者单位】： 太原理工大学机械工程学院;山西省矿山流体控制工程实验室;
【基金】：山西省重点研发计划项目(201603D121001-1)
【分类号】：TB303
，
本文编号：2376232
[Abstract]:The friction materials were prepared by hot pressing sintering with acrylic rubber modified phenolic resin as matrix, aramid fiber and glass fiber as reinforced fibers, different types of nano-particles as fillers to design the distribution ratio of friction materials. The tribological properties of the materials under dry friction were tested by a friction and wear tester. The wear morphology of the materials was observed and analyzed by scanning electron microscope (SEM) in order to study the effect of different types of nanoparticles on the properties of friction materials. The results show that the friction coefficient of the friction material modified by nano-particles under dry friction condition can improve the hardness and decrease the wear rate of the unmodified material to some extent. The friction coefficient and wear rate of the friction materials modified by nano-particles have the same trend and decrease gradually with the increase of the experimental load and the sliding speed. The wear mechanism of the friction materials modified by nano-particles is the coexistence of fatigue wear and abrasive wear, while the wear mechanism of unmodified materials is mainly fatigue wear.
【作者单位】： 太原理工大学机械工程学院;山西省矿山流体控制工程实验室;
【基金】：山西省重点研发计划项目(201603D121001-1)
【分类号】：TB303
，
本文编号：2376232
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