pH敏感性微孔膜摩擦性能及PNIPAM缓释调节研究  

Effect of pH on the Friction Performance of PHP and PHPB Microporous Membrane and the Modulation of PNIPAM Slow Release

作　　者：王文煊 Wang Wenxuan(Jiangxi Key Laboratory of Materials Surface Engineering,Jiangxi Science&Technology Normal University,Nanchang 330000,China)

机构地区：[1]江西科技师范大学江西省材料表面工程重点实验室,江西南昌330000

出　　处：《广东化工》2024年第9期11-13,30,共4页Guangdong Chemical Industry

基　　金：国家自然科学基金项目(51865015)。

摘　　要：针对水基润滑中润滑薄膜易因水分挥发而失效,本文制备了两种微孔膜即PVA-HPC-PNIPAM和PVA-HPC-PNIPAMNa_(2)B_(4)O_(7),在该膜中通过外部条件调节润滑剂PNIPAM的缓释,从而使润滑长期有效。采用傅里叶变换红外光谱(FT-IR)分析微孔膜中的官能团;采用高速往复摩擦磨损试验仪考察了两种微孔膜在不同p H值介质中的摩擦磨损性能;紫外分光光度法定量分析PNIPAM缓释量。结果表明,不同的pH值对于微孔膜的摩擦性能影响甚微,对膜的磨损量的影响较大,同时p H值可对PNIPAM的缓释进行调节,达到长时间润滑的效果。For the lubrication film in water-based lubrication is prone to failure due to water evaporation,two microporous membranes,namely,PVA-HPC-PNIPAM and PVA-HPC-PNIPAM-Na_(2)B_(4)O_(7),were prepared in which the retardation of lubricant PNIPAM was regulated by external conditions to make the lubrication effective for a long period of time.Fourier transform infrared spectroscopy(FT-IR)was used to analyze the functional groups in the microporous membranes;the friction and wear performance of the two microporous membranes in different pH media was investigated by a high-speed reciprocating friction and wear tester;and the amount of PNIPAM retardation was quantitatively analyzed by ultraviolet spectrophotometry.The results show that different pH values have little effect on the friction performance of the microporous membranes,but have a greater effect on the wear amount of the membranes,and at the same time,the pH value can regulate the slow release of PNIPAM,so as to achieve a long-time lubrication effect.

关 键 词：敏感性水凝胶 润滑剂缓释 摩擦磨损 

分 类 号：TQ[化学工程]