Basalt fibre (BF)/acrylonitrile–butadiene rubber (NBR) composites with various BF contents and orientations were prepared, and the curing, physical and mechanical properties and wear performance under block-on-ring abrasion conditions were evaluated. The results showed that the curing time was not obviously affected by the BFs. The addition of BFs increased the hardness but had negative influence on the tensile/tear strength of the NBR composites, especially when the BFs were oriented perpendicular to the tensile/tear direction with a high content, which should be due to the weak connection between the BFs and the rubber matrix. The coefficient of friction (COF) of the composites decreased significantly when BFs were added, whereas the content (3–30 phr) and the orientation of the fibres did not mainly affect the COF. Both parallel- and perpendicular-oriented BFs were effective at improving the wear resistance of the composites, and the former showed a better effect. With the BF content increase, the wear rate initially decreased and then remained basically stable. The COF and wear rate of the composites decreased by 27% and 35% when 12 phr BFs were added in a parallel direction. The excessive BFs, especially the perpendicularly-oriented BFs, led to fracture of the worn surface due to the abrasive grain wear caused by the crushed fibres.

中文翻译：

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纤维含量和取向对玄武岩纤维/丙烯腈-丁二烯橡胶复合材料磨损性能的影响

制备了具有不同BF含量和取向的玄武岩纤维（BF）/丙烯腈-丁二烯橡胶（NBR）复合材料，并评估了在环对块磨损条件下的固化，物理和机械性能以及耐磨性能。结果表明，BFs对固化时间没有明显影响。BF的添加增加了硬度，但对NBR复合材料的拉伸/撕裂强度产生了负面影响，特别是当BFs垂直于拉伸/撕裂方向以高含量定向时，这应归因于两者之间的连接较弱。高炉和橡胶基质。添加高炉时，复合材料的摩擦系数（COF）显着降低，而纤维的含量（3–30 phr）和纤维的取向并没有主要影响COF。平行和垂直取向的高炉都有效地改善了复合材料的耐磨性，前者表现出更好的效果。随着高铁含量的增加，磨损率开始下降，然后基本保持稳定。当在平行方向上添加12 phr BF时，复合材料的COF和磨损率分别降低了27％和35％。过量的高炉渣，特别是垂直取向的高炉渣，由于破碎的纤维引起的磨粒磨损而导致磨损表面破裂。当在平行方向上添加12 phr BF时，复合材料的COF和磨损率分别降低了27％和35％。过量的高炉渣，特别是垂直取向的高炉渣，由于破碎的纤维引起的磨粒磨损而导致磨损表面破裂。当在平行方向上添加12 phr BF时，复合材料的COF和磨损率分别降低了27％和35％。过量的高炉渣，特别是垂直取向的高炉渣，由于破碎的纤维引起的磨粒磨损而导致磨损表面破裂。