无机富勒烯类二硫化钨作为PAO6润滑油添加剂摩擦学性能的研究

doi:10.19964/j.issn.1006-4990.2021-0204

摘要/Abstract

摘要：

以旋转化学气相沉积法合成无机富勒烯类二硫化钨（IF-WS₂）,利用X射线衍射仪、扫描电镜和透射电镜等手段对IF-WS₂进行表征;通过超声处理将表面活性剂span80和IF-WS₂均匀分散于基础油PAO6中,研究了添加量、温度、载荷等因素对IF-WS₂/PAO6减摩抗磨性能的影响;探究了IF-WS₂颗粒在PAO6中的分散性和稳定性以及IF-WS₂对PAO6抗氧化性的影响。结果表明：合成的IF-WS₂为不规则的笼状空心结构,平均粒径为100~200 nm;在载荷为392 N、IF-WS₂最佳添加量为0.25%（质量分数,下同）、测试温度为75 ℃时,IF-WS₂/PAO6的平均摩擦系数降低15.3%;测试温度为100 ℃时,平均摩擦系数降低约27%,磨痕直径减小了43.4%。在不同载荷、测试温度为100 ℃时,平均摩擦系数随着载荷的增加出现先降低后升高的趋势,磨痕直径不断增加。分散性和稳定性测试表明,span80有效改善了IF-WS₂颗粒在PAO6中的分散性,静置192 h后IF-WS₂添加量为0.25%的IF-WS₂/PAO6的分散稳定性最好。此外,氧化安定性测试显示加入IF-WS₂颗粒使 PAO6的抗氧化能力下降了31%。

关键词: IF-WS₂, 润滑油添加剂, 减摩抗磨, 分散性

Abstract:

Inorganic fullerene-like tungsten disulfide（IF-WS₂） particles were synthesized by rotating chemical vapor depo-sition,and characterized with X-ray diffractometer（XRD）,scanning electron microscope（SEM） and transmission electron microscope（TEM）.Surfactants span80 and IF-WS₂ were uniformly dispersed in PAO6 oil with vigorous ultrasonic treatment. The effect of addition content,temperature and loading on the antifriction and anti-wear properties of IF-WS₂/PAO6 were studied.Moreover,the dispersion and stability of IF-WS₂ particles in PAO6 and the effect of IF-WS₂ on the oxidation resis-tance of PAO6 were investigated.The results demonstrated that the synthesized IF-WS₂ was an irregular hollow cage structure with average size of around 100~200 nm.Under the load of 392 N,optimal addition amount of IF-WS₂ of 0.25%,and test temperature of 75 ℃,the average friction coefficient of IF-WS₂/PAO6 decreased by 15.3%.When the test temperature was 100 ℃,the average friction coefficient decreased by about 27%,and the wear scar diameter decreased by 43.4%.Under different load and test temperature of 100 ℃,the average friction coefficient decreased firstly and then increased with the increase of load,and the wear scar diameter increased continuously.Dispersion and stability tests showed that span80 effectively improved the dispersion of IF-WS₂ particles in PAO6,and the dispersion stability of 0.25% IF-WS₂/PAO6 was the best after stewing for 192 h.Additionally,the oxidation stability test proved that adding IF-WS₂ particles reduced the antioxidant capacity of PAO6 by 31%.

Key words: IF-WS₂, lubricating oil additive, antifriction and anti-wear, dispersibility

中图分类号:

TQ136.13

陈文婷,刘光胜,陈晓蓉,李真,曾敏丽,王南南. 无机富勒烯类二硫化钨作为PAO6润滑油添加剂摩擦学性能的研究[J]. 无机盐工业, 2022, 54(1): 45-50.

CHEN Wenting,LIU Guangsheng,CHEN Xiaorong,LI Zhen,ZENG Minli,WANG Nannan. Study on tribological properties of inorganic fullerene-like tungsten disulfide as lubricant additive of PAO6[J]. Inorganic Chemicals Industry, 2022, 54(1): 45-50.

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