Page 59 - 《摩擦学学报》2021年第1期

第 41 卷 第 1 期 摩 擦 学 学 报 Vol 41 No 1
2021 年 1 月 Tribology Jan, 2021

DOI: 10.16078/j.tribology.2020039

水介质中丁腈橡胶溶胀机理及其对

磨粒磨损行为影响

2
1*
1
宋淑媛 , 王世杰 , 聂 瑞 , 李云龙 3
(1. 沈阳工业大学 机械工程学院，辽宁 沈阳 110870;
2. 南京航空航天大学 航空学院，江苏 南京 210016;
3. 汕头大学 工学院，广东 汕头 515063)

摘 要: 研究首先对不同丙烯腈质量分数的丁腈橡胶（18%、26%和41%，即N18、N26和N41）进行浸泡试验分析基于
溶胀时间的静态溶胀行为. 然后进一步对溶胀前后的丁腈橡胶样品进行圆型及角型磨粒单向滑动磨粒磨损试验. 为
了揭示丁腈橡胶的溶胀机理及溶胀对不同粒型作用下磨粒磨损行为的影响，对试样进行质量、硬度、交联链比重
（NMR）和表面形貌（SEM）测试. 结果表明：丁腈橡胶溶胀度随时间的增加而增加，并于240 h后趋于平衡，溶胀影响
下老化的主要原因为交联链破坏和物质溶解.丁腈橡胶硬度随溶胀时间的增加而降低. 溶胀后摩擦系数和磨损量增
加，同粒径下磨粒磨损程度角型大于圆型，角型磨损受溶胀影响程度更大，其最大溶胀后磨损增量为圆型磨粒的
1.56倍. 圆型和角型磨粒分别以滚动和滑动的方式进入摩擦副，形成压入坑和嵌入坑两种不同的表面形貌，溶胀后
橡胶组织疏松软化导致表面凹坑加深. 丁腈橡胶溶胀及其对磨粒磨损的影响程度随丙烯腈含量的增加而减小.
关键词: 丁腈橡胶; 水; 溶胀; 老化; 磨粒磨损
中图分类号: TH117.1; TB324; TQ333.7 文献标志码: A 文章编号: 1004-0595(2021)01–0056–09

Swelling Mechanism and its Effect on Abrasive Wear
Behavior of Nitrile Rubber in Water Medium

1 1* 2 3
SONG Shuyuan , WANG Shijie , NIE Rui , LI Yunlong

(1. School of Mechanical Engineering, Shenyang University of Technology, Liaoning Shenyang 110870, China
2. College of Aerospace Engineering, Nanjing University of Aeronautics and
Astronautics, Jiangsu Nanjing 210016, China
3. College of Engineering, Shantou University, Guangdong Shantou 515063, China)
Abstract: In this study, time-based static swelling behavior was first investigated via immersion experiments of nitrile
rubber with different acrylonitrile weight percentages (18%, 26% and 41%, i.e. N18, N26, and N41) respectively. Then
the unidirectional sliding abrasive wear tests with different particle shapes of the NBR samples before and after swelling
tests were further conducted. In order to reveal the swelling mechanisms and its effect on the abrasive wear, the
weighting method, hardness tests, nuclear magnetic resonance and scanning electron microscopy were conducted and
analyzed accordingly. The results showed that the swelling degree increased with the immersion time and the main
influence on aging was crosslink chain destruction and substance dissolution, which led to the decrease of the nitrile

Received 11 March 2020, revised 27 May 2020, accepted 9 June 2020, available online 28 January 2021.
*Corresponding author. E-mail:wang_shijie65@163.com,Tel:+86-13998816333.
The project was supported by the National Natural Science Foundation of China(51903148), the Natural Scientific Fund Guidance
Plan Project of Liaoning Province, China (20180550640) and the Start-Up Fund of Scientific Research of Shantou University,
China(NTF19008).
国家自然科学基金（51903148），辽宁省自然科学基金指导计划项目(20180550640)和汕头大学科学研究启动基金（NTF19008）
资助.