Eco-Friendly Core–Shell Hollow C@SiO2@C Nanolubricating Additives for Friction Reduction and Antiwear
收藏中国科学院兰州化学物理研究所科学数据中心2025-12-12 更新2026-01-10 收录
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资源简介：
Conventional industrial friction modifiers mostly contain S and P elements in the
liquid phase to satisfy the long-term stable operation of the lubricant. However,
their corrosive property causes distress to the life of the equipment. To tackle this
challenge, we selected poly(methyl methacrylate) (PMMA) and ethyl cellulose as
the carbon sources to design and prepare nanocomposites of carbon-coated silica
and hollow carbon spheres (C@SiO2@C) with homogeneous morphology.
Tribological tests have confirmed the excellent antifriction and antiwear properties
of PAO10 lubrication systems with 4.0 wt% C@SiO2@C particles, reducing the
coefficient of friction (CoF) and wear volume by 45.8% and 75.6%, respectively. The
spherical structure of C@SiO2@C nanocomposites ensures high load-bearing
capacity of the lubrication system, while the carbon deposition film after extrusion
and crushing prevents direct contact between the tribopair. Meanwhile, the heat in
the friction process prompts the additives to react with the tribopair of the tribochemical film and carbon deposition film to further achieve excellent friction
reduction and antiwear performance. It is believed that such multilayer-coated
core–shell nanocomposites can be widely used in industry
提供机构：
中国科学院兰州化学物理研究所科学数据中心
创建时间：
2025-12-12
