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In-situ pyrolysis synthesis of multi-element (F, N, S) co-doped porous carbon nanospheres as lubricating additives with improved tribological behaviors
Carbon ( IF 10.5 ) Pub Date : 2023-12-13 , DOI: 10.1016/j.carbon.2023.118724
Yixin Wang , Sha Liu , Yuhong Cui , Wei Bai , Shujuan Liu , Qian Ye , Feng Zhou , Weimin Liu
Carbon ( IF 10.5 ) Pub Date : 2023-12-13 , DOI: 10.1016/j.carbon.2023.118724
Yixin Wang , Sha Liu , Yuhong Cui , Wei Bai , Shujuan Liu , Qian Ye , Feng Zhou , Weimin Liu
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Herein, hyper-crosslinked polystyrene nanospheres (HPSs) were synthesized via emulsion polymerization and Friedel-Crafts reaction utilizing styrene as the primary raw material. The multielement (F, N, S) co-doped carbon nanospheres with enriching microporous structures were synthesized using ionic liquid ([EMIM]NTf) assisted carbonization of HPSs under 400 °C. The fabricated carbon nanospheres exhibit excellent dispersion stability as well as remarkable anti-friction and anti-wear properties. In comparison to pure 500SN, the friction coefficient of the multielement (F, N, S) co-doped carbon nanospheres is reduced to 0.108, resulting in 81.9 % reduction in wear volume. Furthermore, the friction coefficient shows minimal fluctuation under different frequency and temperature conditions, which is significantly lower by 21.4 % and 31.6 % respectively compared to 500SN, while exhibiting an improved carrying capacity of up to 550 N. Through Raman spectroscopy, XPS, as well as FIB-TEM analysis, the result revealed that tribochemical reactions occur between the active elements within the nanospheres and the friction pairs leading to the formation of the composite protective film (40–70 nm) composed mainly of the deposition film and the frictional chemical protective film, achieving superior frictional performance.
中文翻译:
原位热解合成多元素(F、N、S)共掺杂多孔碳纳米球作为润滑添加剂,改善摩擦学行为
本文以苯乙烯为主要原料,通过乳液聚合和傅克反应合成了超交联聚苯乙烯纳米球(HPS)。采用离子液体([EMIM]NTf)辅助 HPS 在 400 °C 下碳化,合成了具有丰富微孔结构的多元素(F、N、S)共掺杂碳纳米球。制备的碳纳米球表现出优异的分散稳定性以及显着的减摩和抗磨性能。与纯500SN相比,多元素(F、N、S)共掺杂碳纳米球的摩擦系数降低至0.108,磨损量减少81.9%。此外,在不同频率和温度条件下,摩擦系数波动最小,与 500SN 相比分别显着降低 21.4% 和 31.6%,同时表现出高达 550 N 的改进承载能力。 FIB-TEM分析结果表明,纳米球内的活性元素与摩擦副之间发生摩擦化学反应,形成主要由沉积膜和摩擦化学保护层组成的复合保护膜(40-70 nm)薄膜,实现优异的摩擦性能。
更新日期:2023-12-13
中文翻译:
![](https://scdn.x-mol.com/jcss/images/paperTranslation.png)
原位热解合成多元素(F、N、S)共掺杂多孔碳纳米球作为润滑添加剂,改善摩擦学行为
本文以苯乙烯为主要原料,通过乳液聚合和傅克反应合成了超交联聚苯乙烯纳米球(HPS)。采用离子液体([EMIM]NTf)辅助 HPS 在 400 °C 下碳化,合成了具有丰富微孔结构的多元素(F、N、S)共掺杂碳纳米球。制备的碳纳米球表现出优异的分散稳定性以及显着的减摩和抗磨性能。与纯500SN相比,多元素(F、N、S)共掺杂碳纳米球的摩擦系数降低至0.108,磨损量减少81.9%。此外,在不同频率和温度条件下,摩擦系数波动最小,与 500SN 相比分别显着降低 21.4% 和 31.6%,同时表现出高达 550 N 的改进承载能力。 FIB-TEM分析结果表明,纳米球内的活性元素与摩擦副之间发生摩擦化学反应,形成主要由沉积膜和摩擦化学保护层组成的复合保护膜(40-70 nm)薄膜,实现优异的摩擦性能。