摘要
以采油单螺杆泵定子常用材料氢化丁腈橡胶(HNBR)为研究对象,改性纳米氧化铝(Al2O3)为填充剂,实验研究了填充不同粒径氧化铝对橡胶材料的交联密度、耐原油溶胀性能和摩擦磨损性能的影响,并分析了Al2O3对HNBR材料的补强机理。结果表明,填充纳米氧化铝的HNBR材料的交联密度、耐原油溶胀性能均有所提高,且交联密度和耐原油溶胀性能随Al2O3粒径的减小而提高;摩擦磨损试验结果表明,填充纳米氧化铝后,HNBR材料的摩擦系数和体积磨损率降低,且摩擦系数和体积磨损率随着填充Al2O3粒径的减小而减小,即填充10 nm Al2O3的HNBR材料耐磨性较好。纳米氧化铝补强HNBR机理是填充Al2O3后形成了以Al2O3为交联点的交联网络以及Al2O3表面的不饱和基团自聚后形成的大分子链与HNBR分子链互穿缠绕形成类似互穿聚合物的网络结构。
The modified nano-aluminium oxide(Al2O3) with various particle sizes was used as filler of hydrogenated nitrile rubber(HNBR), which is commonly used for single screw pump stator. The effects of the modified Al2O3 with different particle sizes on the cross-linking density, resistance to crude oil swelling of rubber materials, and friction and wear properties were studied. In addition, the reinforcement mechanism of Al2O3 with different particle sizes was analyzed. The results show that the cross-linking density and swelling resistance of HNBR filled with Al2O3 are improved, and the cross-linking density and performance of crude oil swelling resistance increase with the decrease of Al2O3 particle size. The friction and wear test results show that after Al2O3 with different particle sizes was filled into HNBR, the friction coefficient of and volume wear rate of the HNBR/Al2O3 composites decrease, and then decrease with the decrease of particle sizes of filled Al2O3. The HNBR/Al2O3 composite filled with 10 nm Al2O3 has the good wear resistance. The mechanism of Al2O3 reinforcing HNBR is due to that crosslinked networks with Al2O3 as cross-linking point are formed, and that the network structure similar to interpenetrating polymer is formed owing to the macromolecular chains formed by the self-polymerization of the unsaturated groups on the surface of Al2O3 and the HNBR molecular chains interpenetrated.
作者
刘增辉
谈金祝
高小荃
Zenghui Liu;Jinzhu Tan;Xiaoquan Gao(School of Mechanical and Power Engineering,Nanjing Tech University,Nanjing 211816,China;Chengde Petroleum College,Chengde,0670009 China)
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2020年第2期60-67,73,共9页
Polymer Materials Science & Engineering
基金
江苏省“六大人才高峰”资助项目(2013ZBZZ019)
江苏省高等学校大学生实践创新训练计划(201810291168X).
关键词
单螺杆泵
氢化丁腈橡胶
纳米氧化铝
粒径
摩擦磨损
补强机理
single screw pump
hydrogenated nitrile rubber
nano-aluminium oxide
particle size
friction and wear
reinforcement mechanism
