摘要
碳纳米管复合橡胶轮胎是一种应用前景非常广阔的新型高性能轮胎,然而碳纳米管复合橡胶轮胎磨损颗粒物(TWPs)安全性隐患为这类轮胎的广泛应用带来了极大的不确定性.采用自行设计的摩擦磨损试验机,研究了碳管含量、负载、滚动速度和滑移率对碳纳米管复合橡胶磨损颗粒物性态的影响,分析了这些因素与磨损颗粒物性态及橡胶磨损机理的关系.结果表明:碳纳米管能够显著增强橡胶耐磨性能并降低胎面温度,增加碳纳米管含量可以有效抑制磨损颗粒物特别是微小颗粒物(≤3μm)数量.碳纳米管可以使复合橡胶硬度增加,使微小磨损颗粒物的增长速率高于未添加CNTs的橡胶.力-化学效应导致的胎面热氧化发黏现象会使磨屑更易团聚粘附在胎面,从而减少微小磨损颗粒物排放.负载变化主要影响胎面磨损形态,速度和滑移率变化主要影响胎面附着的颗粒物数量和状态.研究结果可以为防控碳纳米管复合橡胶因磨损而导致的次生危害提供科学参考.
Rubber-carbon nanotubes(CNTs)composites,with its good anti-wear ability,good thermal conductivity,and high tear resistance ability,has great potential for future applications in tire industry.However,due to the uncertainty of the toxicity of the CNTs,there are raising eyebrows on the safety of this kind of tire material,especially the secondary hazard such as released particles induced by the tire wear.Therefore,it is significant to investigate the related topics to the rubber-CNTs material and its derivative.This paper conducted experiments on the rubber-CNTs composites to explore the relationship among the parameters closely related to tire wear(CNTs content,load,velocity,and slip ratio),TWPs(tire wear particles)features(quantity and size)and surface wear mechanism from the perspective of tribology.The test tires made by styrene butadiene rubber(SBR)compositing with content variation of CNTs as reinforcing fillers were prepared.Then,utilizing the selfdeveloped abrasion tester,the influence of the mentioned parameters on the TWPs were studied.Furthermore,the morphology of the worn composites tread was explored to build the relationship among the wear mechanism,TWPs’features,and the mentioned parameters.Handheld laser particle counter CLJ-3016H and non-contact infrared thermometers Fluke 59 Pro were employed to measure the particle quantity and tread temperature,respectively.The tribological performance of SBR without CNTs was also investigated as comparison.As the CNTs’content increased,the anti-wear ability of the SBR-CNTs composites was improved greatly and the quantity of TWPs showed a considerable decrease.The quantity of TWPs varied wildly without and with reinforcement of 1%CNTs.The TWPs quantity with a particle size of 3μm decreased by 50%,and the quantity of TWPs with particle sizes of 5 and 10μm decreased by 79%and 68%respectively,indicating that CNTs effectively reduced the fine wear particles generation.However,the tire tread temperature was independent on the content of CNTs.The abrasive wear w
作者
裴家庆
黄海波
李超
黄飞洪
许一伟
华李成
PEI Jiaqing;HUANG Haibo;LI Chao;HUANG Feihong;XU Yiwei;HUA Licheng(School of Mechanical Engineering and Mechanics,Ningbo University,Zhejiang Ningbo 315211,China)
出处
《摩擦学学报》
EI
CAS
CSCD
北大核心
2022年第4期742-750,共9页
Tribology
基金
国家自然科学基金项目(51975300)资助。
关键词
橡胶
碳纳米管
磨损颗粒物
粒径
磨损形貌
rubber
carbon nanotube
wear particles
particle size
wear morphology
