Synthesis and evaluation of new coatings based on chemically modified rosin and PMMA for steel substrates

编号 020035104

推送时间 20220711

研究领域 林产化工 

年份 2022 

类型 期刊 

语种 英语

标题 Synthesis and evaluation of new coatings based on chemically modified rosin and PMMA for steel substrates

来源期刊 Materials Letters

期 第351期

发表时间 20220406

关键词 Glycerol ester;  Rosin;  Coatings;  Wear rate;  Friction coefficient; 

摘要 Rosin derivatives used as coatings on a variety of substrates provide electrical insulation and corrosion protection. This paper explores the feasibility of using two chemically modified rosins, which are the glycerol rosin ester (GRE) and GRE-poly(methyl methacrylate) (GRE-PMMA) used as stainless steel coatings to reduce friction and wear rate. The chemical structures of GRE and GRE-PMMA are investigated via FTIR to evaluate frictions and wear characteristics of coated stainless steel-substrates; these are tested on a ball-on-disc tribometer, followed by a careful observation of the obtained surface using an optical microscope. The FTIR results reveal structural differences among rosin, GRE, and PMMA; which relates to the suppression of -COOH groups and the appearance of new -OH and -COOR groups. The GRE and GRE-PMMA coatings on the substrate, reduce the friction coefficient by 49% and 46% (before coating 0.59 and after coating 0.30 and 0.32) and wear rate by 29% and 26% (before coating 6.8 and after coating 4.8 and 5.0) respectively. These findings suggest that GRE and GRE-PMMA are effective coatings as protective agents for stainless-steel substrates due to the attractive forces between the organic molecule and the metal surface.

服务人员 尚玮姣

服务院士 宋湛谦

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