聚苯乙烯复合微球的制备及其润滑性能

Preparation and Lubricating Properties of Polystyrene Composite Microspheres.

作者信息

Zeng Wen, Huang Weiqing, Guo Bing, Sun Yang, Shen Hangyan

机构信息

College of Materials and Chemistry, China Jiliang University, Hangzhou 310018, China.

Hangzhou Huaguang Advanced Welding Materials Co., Hangzhou 311112, China.

出版信息

Materials (Basel). 2023 Apr 13;16(8):3071. doi: 10.3390/ma16083071.

DOI:10.3390/ma16083071

PMID:37109906

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10145035/

Abstract

In order to improve the lubrication performance of polystyrene microspheres (PS) as solid lubricant in drilling fluids, elastic graphite-polystyrene composite microspheres (EGR/PS), montmorillonite-elastic graphite-polystyrene composite microspheres (OMMT/EGR/PS), and polytetrafluoroethylene-polystyrene composite microspheres (PTFE/PS) were prepared by suspension polymerization. OMMT/EGR/PS has a rough surface, while the surfaces of the other three composite microspheres are smooth. Among the four kinds of composite microspheres, the largest particle is OMMT/EGR/PS, and the average size is about 400 μm. The smallest particle is PTFE/PS, and the average size is about 49 μm. Compared with pure water, the friction coefficient of PS, EGR/PS, OMMT/EGR/PS and PTFE/PS reduced by 25%, 28%, 48%, and 62%, respectively. The wear tracks of EGR/PS, OMMT/EGR/PS and PTFE/PS are narrower and smoother than those of pure water. When the content of PTFE is 4.0 wt%, the friction coefficient and wear volume of PTFE/PS are 0.213 and 2.45 × 10 mm-74% and 92.4% lower than that of pure water, respectively.

摘要

为了提高作为钻井液中固体润滑剂的聚苯乙烯微球（PS）的润滑性能，通过悬浮聚合制备了弹性石墨-聚苯乙烯复合微球（EGR/PS）、蒙脱石-弹性石墨-聚苯乙烯复合微球（OMMT/EGR/PS）和聚四氟乙烯-聚苯乙烯复合微球（PTFE/PS）。OMMT/EGR/PS表面粗糙，而其他三种复合微球表面光滑。在这四种复合微球中，最大的颗粒是OMMT/EGR/PS，平均尺寸约为400μm。最小的颗粒是PTFE/PS，平均尺寸约为49μm。与纯水相比，PS、EGR/PS、OMMT/EGR/PS和PTFE/PS的摩擦系数分别降低了25%、28%、48%和62%。EGR/PS、OMMT/EGR/PS和PTFE/PS的磨损轨迹比纯水的更窄更光滑。当聚四氟乙烯含量为4.0 wt%时，PTFE/PS的摩擦系数和磨损体积分别比纯水低74%和92.4%（此处原文磨损体积单位表述有误，推测应为mm³），分别为0.213和2.45×10 mm³ 。