發(fā)布時(shí)間：2018-12-13 08:22

【摘要】：以丁腈橡膠改性酚醛樹(shù)脂為基體,芳綸纖維、玻璃纖維為增強(qiáng)纖維,選用不同類型的納米顆粒作為填料設(shè)計(jì)摩擦材料組分配比,并通過(guò)熱壓燒結(jié)制備摩擦材料。通過(guò)摩擦磨損試驗(yàn)機(jī)測(cè)試其在干摩擦條件下的摩擦學(xué)性能,并用掃描電鏡(SEM)對(duì)材料的磨損形貌進(jìn)行觀察分析,以研究不同類型的納米顆粒對(duì)摩擦材料性能的影響。研究表明:在干摩擦條件下,經(jīng)過(guò)納米顆粒改性的摩擦材料摩擦系數(shù)、硬度比未改性的材料有不同程度的提高,同時(shí)磨損率有很大程度的降低;納米顆粒改性的摩擦材料摩擦系數(shù)、磨損率變化趨勢(shì)具有一致性,均隨著實(shí)驗(yàn)載荷、滑動(dòng)速度的增大而逐漸減小;納米顆粒改性后的摩擦材料磨損機(jī)理表現(xiàn)為疲勞磨損與磨粒磨損并存,而未改性的材料磨損機(jī)理主要表現(xiàn)為疲勞磨損。
[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.
【作者單位】： 太原理工大學(xué)機(jī)械工程學(xué)院;山西省礦山流體控制工程實(shí)驗(yàn)室;
【基金】：山西省重點(diǎn)研發(fā)計(jì)劃項(xiàng)目(201603D121001-1)
【分類號(hào)】：TB303
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本文編號(hào)：2376232