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Elastomer modified phenolic resin‐based composites with reduced scale friction: Influence of calcined petroleum coke on tribological and thermo‐mechanical behavior
Polymer Engineering and Science ( IF 3.2 ) Pub Date : 2020-04-14 , DOI: 10.1002/pen.25392
Prosenjit Ghosh 1 , Shib Shankar Banerjee 2 , Dipak Khastgir 1
Affiliation  

The present investigation deals with the effect of the concentration of calcined petroleum coke (CPC) on the dry sliding wear characteristics of elastomer modified phenolic resin‐based friction composites. Other ingredients common in brake formulations like fiber, filler, and solid lubricant were excluded in the present formulations to understand the exclusive effect of the CPC concentration on the frictional, mechanical, and thermal properties of these composites. The composites were fabricated by hot mixing followed by compression molding, and subsequent post‐curing. The coefficient of friction (COF) and the specific wear rate of these composites sliding against a cast‐iron disc were measured and analyzed. The change in surface topography of these composites before and after sliding operation was investigated by scanning electron microscopy. An effort was made to correlate the surface morphology of these composites before and after sliding with friction and wear behavior. The investigation reveals that CPC inclusion improved the anti‐wear behavior as it formed a uniform transfer layer over the rubbing surfaces. In case of optimum CPC loaded (200 phr) composite, the average COF and thermal conductivity values were found to be 0.15 and 0.61 W/m‐K, respectively, as compared to 0.12 and 0.25 W/m‐K for the base composite (without any CPC).

中文翻译:

降低尺度摩擦的弹性体改性酚醛树脂基复合材料:煅烧石油焦对摩擦学和热机械行为的影响

本研究探讨了煅烧石油焦(CPC)的浓度对弹性体改性酚醛树脂基摩擦复合材料的干滑磨损特性的影响。制动配方中常见的其他成分(如纤维,填料和固体润滑剂)未包括在本配方中,以了解CPC浓度对这些复合材料的摩擦,机械和热性能的排他性影响。复合材料是通过热混合,压缩成型和随后的后固化制成的。测量并分析了这些复合材料在铸铁圆盘上滑动时的摩擦系数(COF)和比磨损率。通过扫描电子显微镜研究了这些复合材料在滑动操作之前和之后的表面形貌变化。努力使这些复合材料在滑动前后的表面形态与摩擦和磨损行为相关联。调查表明,CPC夹杂物改善了耐磨性,因为它在摩擦表面上形成了均匀的转移层。在最佳CPC负载(200 phr)复合材料的情况下,发现基础复合材料的平均COF和热导率值分别为0.15和0.61 W / m‐K,而基础复合材料的平均COF和导热系数分别为0.12和0.25 W / m‐K(没有任何每次点击费用)。
更新日期:2020-04-14
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