两种分散剂对IF-WS2纳米粒子分散性能和摩擦性能的影响

Influence on Dispersion and Friction Properties of IF-WS2 Nanoparticles by Two Dispersants

研究甲基萘和聚异丁烯丁二酰亚胺(PIBSI)两种分散剂对IF-WS 2纳米颗粒在基础油中的分散性能和摩擦性能的影响。使用722型分光光度计和四球摩擦试验机分别考察纳米WS 2润滑油在分散剂中的分散稳定性和摩擦性能,用激光粒度分析仪和红外光谱(FTIR)分析分散剂与WS 2纳米颗粒之间的作用机制。结果表明:甲基萘的分散效果和抗磨减摩效果最好,4%甲基萘分散的0.01%的纳米WS 2润滑油可以长期稳定保存,其纳米WS 2润滑油在490 N时的磨斑直径仅为0.540 mm,摩擦因数为0.11;甲基萘能够起到分散和抗磨减摩作用的原因是其对IF-WS 2纳米粒子具有一定的溶解作用。

The effect of methylnaphthalene and polyisobutylenesuccinimide(PIBSI)on the dispersing and tribological properties of low-content IF-WS 2 nanoparticles in base oils were investigated.The dispersion stability and tribological properties of nano-WS 2 lubricants in three dispersants were examined by 722 spectrophotometer and four-ball friction tester.The mechanism of dispersant and WS 2 nanoparticles was analyzed by laser particle size analyzer and infrared spectroscopy(FTIR).The results showed that methylnaphthalene possessed the optimal effect of dispersing,antiwear and friction reducing,0.01%nano WS 2 lubricant dispersed by 4%methylnaphthalene could be stably stored for a long time,and the nano-WS 2 lubricant had only 0.540 mm of wear spot diameter(WSD)of at 490 N and 0.11 of friction coefficient.Therefore,methylnaphthalene possesses the effect of dispersing,antiwear and friction reducing,which is due to the fact that IF-WS 2 nanoparticles could partly dissolve in methylnaphthalene.