分散剂对基础油中纳米二硫化钼颗粒分散与润滑性能的影响研究
发布时间：2018-12-18 10:08
【摘要】：采用激光粒度分析仪和纳米摩擦试验机分别考察了6种分散剂对基础油中纳米二硫化钼(MoS_2)颗粒的分散稳定性和油品的减摩性能,并采用红外光谱(FTIR)分析了分散剂与MoS_2纳米颗粒的接枝作用机理.试验结果表明,氨丙基三甲氧基硅烷(ATS)和山梨醇油酸酯(SPAN 80)分散剂因含有极性较强的官能团,与MoS_2接枝后能够形成牢固的化学键,不仅表现出突出的分散稳定效果,而且能大幅降低纳米MoS_2基础油的摩擦系数,而其他4种分散剂中的官能团极性较弱,与MoS_2纳米颗粒的化学键合作用较弱,容易在摩擦外力作用下破坏,导致油品的摩擦系数增加.
[Abstract]:The dispersion stability and antifriction properties of six dispersants to nano-molybdenum disulfide (MoS_2) particles in base oil were investigated by laser particle size analyzer and nano-friction tester, respectively. The grafting mechanism of dispersant and MoS_2 nanoparticles was analyzed by IR (FTIR). The results showed that the dispersants of aminopropyl trimethoxysilane (ATS) and sorbitol oleate (SPAN 80) could form a strong chemical bond after grafting with MoS_2 because of the existence of strong polar functional groups. It not only showed outstanding dispersion and stabilization effect, but also significantly reduced the friction coefficient of nanometer MoS_2 base oil, while the polarity of functional groups in the other four dispersants was weaker, and the coordination with the chemical bond of MoS_2 nanoparticles was weaker. It is easy to destroy under the action of friction force, resulting in the increase of friction coefficient of oil.
【作者单位】： 空军勤务学院学员一大队;空军勤务学院航空油料物资系;
【基金】：国家自然科学基金(51575525) 江苏省自然科学基金(BK20141123) 清华大学摩擦学国家重点实验室开放基金(SKLTKF14B10)资助
【分类号】：TE626.9
[Abstract]:The dispersion stability and antifriction properties of six dispersants to nano-molybdenum disulfide (MoS_2) particles in base oil were investigated by laser particle size analyzer and nano-friction tester, respectively. The grafting mechanism of dispersant and MoS_2 nanoparticles was analyzed by IR (FTIR). The results showed that the dispersants of aminopropyl trimethoxysilane (ATS) and sorbitol oleate (SPAN 80) could form a strong chemical bond after grafting with MoS_2 because of the existence of strong polar functional groups. It not only showed outstanding dispersion and stabilization effect, but also significantly reduced the friction coefficient of nanometer MoS_2 base oil, while the polarity of functional groups in the other four dispersants was weaker, and the coordination with the chemical bond of MoS_2 nanoparticles was weaker. It is easy to destroy under the action of friction force, resulting in the increase of friction coefficient of oil.
【作者单位】： 空军勤务学院学员一大队;空军勤务学院航空油料物资系;
【基金】：国家自然科学基金(51575525) 江苏省自然科学基金(BK20141123) 清华大学摩擦学国家重点实验室开放基金(SKLTKF14B10)资助
【分类号】：TE626.9
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