Krzyzak Aneta, Kosicka Ewelina, Szczepaniak Robert
Faculty of Aeronautics, Military University of Aviation, 08-521 Deblin, Poland.
Faculty of Mechanical Engineering, Lublin University of Technology, 20-618 Lublin, Poland.
Materials (Basel). 2020 Dec 16;13(24):5735. doi: 10.3390/ma13245735.
The subject of the research is a polymer composite with a matrix base of epoxy resin L285 cured with H285 hardener, and a physical modifier of friction in the form of alundum. The article presents an analysis of findings of tribological examinations. The authors evaluated the influence of the modifier properties in the form of alundum, i.e., mass share and grain size, on the abrasive wear of a composite, defined as loss of weight as well as on roughness parameters and selected mechanical properties. The tribological examinations have been extended by measurements of hardness and density of the prepared composites. The obtained results of tribological examinations showed an increase in the average value of weight loss in relation to the loss of sample weight loss between the cycles. The influence of both the grain size and the mass percentage share of alundum upon the increase in the longitudinal modulus of elasticity was also observed. On the basis of the obtained results, it was found that alundum of grain sizes equal to F220 and F240 exerted the best influence on the reduction of abrasive wear of the tested samples. In the case of F220, it was 14.04% of the average value of the weight loss between the cycles for all percentage shares of the used grains.
该研究的对象是一种聚合物复合材料，其基体为用H285固化剂固化的环氧树脂L285，摩擦物理改性剂为刚玉。本文对摩擦学试验结果进行了分析。作者评估了刚玉形式的改性剂性能（即质量份额和粒度）对复合材料磨料磨损的影响，磨料磨损定义为重量损失，以及对粗糙度参数和选定机械性能的影响。通过测量制备复合材料的硬度和密度，扩展了摩擦学试验。摩擦学试验获得的结果表明，相对于循环之间样品重量损失的损失，重量损失的平均值有所增加。还观察到刚玉的粒度和质量百分比份额对纵向弹性模量增加的影响。根据获得的结果，发现粒度等于F220和F240的刚玉对测试样品磨料磨损的降低影响最佳。在F220的情况下，对于所用颗粒的所有百分比份额，它是循环之间重量损失平均值的14.04%。
