单回路保护阀密封圈表界面黏附特性

中国机械工程

单回路保护阀密封圈表界面黏附特性

倪敬1,2;史雨1,2;蒙臻1,2;黄浩锋1

1. 杭州电子科技大学机械工程学院，杭州，310018
2. 杭州电子科技大学船港机械装备与技术省重点实验室，杭州，310018

出版日期:2019-12-25 发布日期:2019-12-27
基金资助:
国家自然科学基金资助项目（51775153）;
浙江省属高校基本科研业务费专项资金资助项目(GK199900299012-005)

Interface Adhesion Characteristics of Sealing Ring on Single Loop Protective Valves

NI Jing1,2;SHI Yu1,2;MENG Zhen1,2;HUANG Haofeng1

1.School of Mechanical and Engineering, Hangzhou Dianzi University, Hangzhou,310018
2.Key Laboratory of Mechanical Equipment and Technology for Marine Machinery, Hangzhou Dianzi University, Hangzhou,310018

Online:2019-12-25 Published:2019-12-27

摘要/Abstract

摘要： 针对单回路保护阀密封圈（硫化于阀芯上）在阀芯开启过程中体现的复杂表界面黏附特性，搭建了具体黏附力检测试验台，研究了密封圈和金属端面(阀套)在不同预压力、不同预压时间和不同分离速度时分离过程的表界面黏附力变化规律。结果表明:两表界面的分离速度对黏附力峰值的影响最为显著，预压力的影响最小；当分离速度由0.25 mm/s增至2 mm/s时，黏附力峰值最大增幅为404.7%；预压力由80 N增至120 N时，黏附力峰值最大增幅仅8.5%。根据密封圈和金属端面表界面黏附及脱离过程的高速显微镜观察结果分析，产生这一结果原因在于：两表界面在分离过程中受密封圈自身黏弹性性质影响，其真实接触面积呈时域非线性特性。

关键词: 单回路保护阀, 橡胶密封圈, 接触表界面, 黏附力, 非线性特性

Abstract: In view of the complex surface adhesion characteristics of the single loop protective valve sealing ring (vulcanized on the spool) in the processes of opening the spool, a specific adhesion testing bench was built to study the variation laws of surface adhesion forces between the sealing ring and the metal face（valve sleeve）in the processes of separation at different preloading forces, different preloading time and different separation speeds. The results show that the separation speed has the most significant effect on the peak adhesion forces and and the influence of preloading forces is the smallest. When the separation speed increases from 0.25 mm/s to 2 mm/s, the peak adhesion forces increase by 4047%. When the preloading forces increase from 80 N to 120 N, the maximum increase of the adhesive force peaks is only 8.5%. According to the analysis of the high-speed microscope observation results of the adhesion and detachment processes of the interfaces between the sealing ring and the valve sleeve table, the reasons are as follows: the interface of the two tables is affected by the viscoelastic properties of the sealing ring itself in the separation processes, and the real contact area presents a time domain nonlinear characteristics.

Key words: single loop protection valve, rubber seal ring, contact table interface, adhesion, nonlinear characteristic

中图分类号:

TP242

倪敬1,2;史雨1,2;蒙臻1,2;黄浩锋1. 单回路保护阀密封圈表界面黏附特性[J]. 中国机械工程.

NI Jing1,2;SHI Yu1,2;MENG Zhen1,2;HUANG Haofeng1. Interface Adhesion Characteristics of Sealing Ring on Single Loop Protective Valves[J]. China Mechanical Engineering.

参考文献

[1]BAEK D, HEMTHAVY P, SAITO S, et al. Evaluation of Energy Dissipation Involving Adhesion Hysteresis in Spherical Contact between a Glass Lens and a PDMS Block[J]. Applied Adhesion Science, 2017, 5:1-11.
[2]WILLIAMSON D M, HAMILTON N R, JARDINE A P. Rate Dependent Interfacial Properties Using the JKR Experimental Technique[C]∥Proceedings of the 2016 Annual Conference on Experimental and Applied Mechanics. Cham,2016:49-54.
[3]约翰逊.接触力学[M].北京：高等教育出版社, 1992.
JOHNSON.Contact Mechanics[M].Beijing：Higher Education Press, 1992.
[4]JOHNSON K L, KENDALL K, ROBERTS A D. Surface Energy and the Contact of Elastic Solids[J]. Proceedings of the Royal Society of London, 1971, 324(1558):301-313.
[5]DERJAGUIN B V, MULLER V M, TOPOROV Y P. Effect of Contact Deformations on the Adhesion of Particles[J].Journal of Colloid & Interface Science, 1975, 53(2):314-326.
[6]TABOR D. Surface Forces and Surface Interactions[J]. Journal of Colloid & Interface Science, 1977, 58(1):2-13.
[7]MAUGIS D. Adhesion of Spheres: The JKR-DMT Transition Using a Dugdale Model[J]. Journal of Colloid & Interface Science, 1992, 150(1):243-269.
[8]吴健, 董吉义, 王友. 硅橡胶圆柱表面与光滑表面接触特性研究[J].橡胶工业,2018, 65(6):626-630.
WU Jian, DONG Jiyi, WANG Youshan. Study on the Contact Characteristics between Silicone Rubber Cylinder Surface and Smooth Surface[J]. Rubber Industry, 2018, 65(6): 626-630.
[9]刘静, 段芳莉. 原子尺度摩擦行为的分子动力学模拟[J].固体力学学报, 2014, 35(2):167-172.
LIU Jing, DUAN Fangli. Molecular Dynamics Simulation of Atomic Scale Friction Behavior[J].Chinese Journal of Solid Mechanics, 2014, 35(2): 167-172.
[10]SMITTHIPONG W, NARDIN M, SCHULTZ J, et al. Adhesion and Self-adhesion of Immiscible Rubber Blends[J].International Journal of Adhesion & Adhesives, 2009, 29(3):253-258.
[11]LUDEMA K C, TABOR D. The Friction and Visco-elastic Properties of Polymeric Solids[J]. Wear, 1966, 9(5):329-348.
[12]黄健萌, 陈晶晶, 李凝. 两种不同形状压头与单晶铜基体间接触力和摩擦力的纳观分析[J]. 摩擦学学报, 2015, 35(3):308-314.
HUANG Jianmeng, CHEN Jingjing, LI Ning. Nanoscopic Analysis of Contact Force and Friction between Two Different Shape Indenters and Single Crystal Copper Substrate[J]. Tribology, 2015, 35(3):308-314.
[13]MOLDENHAUER P, NEPP R, KRGER M. Dynamic Systems with Rubber Contacts in Technical Applications[J]. Plastics Rubber & Composites, 2011, 40(4):169-174.
[14]BRIGGS G A D, BRISCOE B J. Surface Roughness and the Friction and Adhesion of Elastomers[J]. Wear, 1979, 57(2):269-280.
[15]张昊, 吴连伟, 郭东杰,等. 多组份硅橡胶基末端膨大二级结构粘附性能研究[J]. 摩擦学学报, 2011, 31(3):295-303.
Zhang Hao,Wu Lianwei, Guo Dongjie,et al. Adhesion Properties of Multi-component Silicone Rubber-based End-expanded Secondary Structure[J]. Tribology, 2011, 31(3): 295-303.