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| 滑动速度和正压力对三种PTFE自润滑材料摩擦系数的影响 | |
| 引用本文： | 杨学宾,晋欣桥,杜志敏,崔天生,杨绍侃.滑动速度和正压力对三种PTFE自润滑材料摩擦系数的影响[J].内燃机工程,2010,31(2). |
| 作者姓名： | 杨学宾 晋欣桥 杜志敏 崔天生 杨绍侃 |
| 作者单位： | 1. 嘉兴学院,建筑环境与设备工程系,嘉兴,314001;西安交通大学,能源与动力工程学院,西安,710049 2. 嘉兴学院,建筑环境与设备工程系,嘉兴,314001 3. 上海交通大学,机械与动力工程学院,上海,200240 |
| 摘 要： | 在环-块式摩擦试验机上,试验研究了3种PTFE自润滑材料的摩擦系数随滑动速度和正压力的变化趋势。试环采用45~#不锈钢,自润滑试块分别采用普通填充PTFE、30%碳纤维增强PTFE和C/C+PTFE 3种自润滑材料制成。滑动速度和正压力的变化对摩擦系数的影响因材料的不同而不同。普通填充PTFE和30%碳纤维增强PTFE的摩擦系数在某一速度范围内出现最小值。正压力大于19.6 N时,C/C+PTFE的摩擦系数低于30%碳纤维增强PTFE,并且最小可达0.20以下。当正压力接近50 N时,C/C+PTFE的摩擦系数几乎不受滑动速度的影响。在高压高速的条件下,C/C+PTFE是比较理想的自润滑密封材料。 |
| 关 键 词： | 内燃机 摩擦系数 PTFE复合材料 自润滑 滑动速度 正压力 |
Effects of Sliding Velocity and Positive Pressure on Friction Coefficient of Three Materials Containing PTFE Self-Lubricating Composites |
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| YANG Xue-bin,JIN Xin-qiao,DU Zhi-min,CUI Tian-sheng,YANG Shao-kan.Effects of Sliding Velocity and Positive Pressure on Friction Coefficient of Three Materials Containing PTFE Self-Lubricating Composites[J].Chinese Internal Combustion Engine Engineering,2010,31(2). | |
| Authors: | YANG Xue-bin JIN Xin-qiao DU Zhi-min CUI Tian-sheng YANG Shao-kan |
| Affiliation: | 1/a>;3;1.Department of Building Environment and Facility Engineering/a>;Jiaxing University/a>;Jiaxing 314001/a>;China/a>;2.School of Mechanical Engineering/a>;Shanghai Jiaotong University/a>;Shanghai 200240/a>;3.School of Energy and Power Engineering/a>;Xi'an Jiaotong University/a>;Xi'an 710049/a>;China |
| Abstract: | The friction coefficient of three materials containing PTFE self-lubricating composites was tested on a block-on-ring type tribometer,and the effects of sliding velocity and positive pressure on friction coefficient were investigated.The rotating ring was made of 45~# steel and the blocks were respectively made in material filled with common polytetrafluroethylene(PTFE),PTFE enhanced by 30 wt.%carbon fiber (30 wt.%CF + PTFE),and carbon-carbon composites plus PTFE(C/C+PTFE).The results indicate that the slid... |
| Keywords: | IC engine friction coefficient PTFE composites self-lubricating sliding velocity positive pressure |
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