肖氏硬度计
材料科学
复合材料
弹性模量
泄漏(经济)
天然橡胶
聚四氟乙烯
模数
弹性体
润滑
经济
宏观经济学
作者
Bingqing Wang,Xiaoxuan Li,Xudong Peng,Yuntang Li,Xiang Li,Yuan Chen,Jie Jin
出处
期刊:Lubricants
[MDPI AG]
日期:2023-08-31
卷期号:11 (9): 367-367
被引量:1
标识
DOI:10.3390/lubricants11090367
摘要
The influence of NBR Shore hardness and PTFE elastic modulus on the sealing characteristics of step rod seals is analyzed in this paper based on the developed mixed elastohydrodynamic lubrication (EHL) model. The optimized selection studies of NBR Shore hardness and PTFE elastic modulus under different operating conditions are carried out based on the principle of minimizing net leakage and friction power loss. Results show that the Shore hardness of the NBR O-ring and, in particular, the elastic modulus of the PTFE ring has a significant effect on the sealing characteristics. Although the high values of these parameters result in high friction forces, they are beneficial for leakage control. To achieve both low leakage and low friction, it is recommended that high hardness and low modulus are selected for moderate-low pressure or high speed conditions, but low hardness and high modulus are selected for high pressure or low speed conditions.
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