富勒烯-苯乙烯-甲基丙烯酸三元共聚物的合成及其磨擦学性能  

Synthesis of Fullerene-Styrene-Methacrylic Acid Copolymer Nanoball and Its Lubrication Behavior

作　　者：江贵长[1] 官文超[1] 郑启新[2] 

机构地区：[1]华中科技大学化学系,淮南师范学院化学系淮南232001 [2]华中科技大学生命学院

出　　处：《应用化学》2003年第11期1044-1047,共4页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金资助项目 ( 2 0 0 740 12 );安徽省教育厅自然科学基金项目 ( 2 0 02kj2 90 )

摘　　要：由自由基聚合合成了 1种新型纳米级富勒烯 苯乙烯 甲基丙烯酸三元共聚物 ,易溶于碱性水、甲醇、四氢呋喃等溶剂。用FTIR、UV 2 40等进行了结构表征。TEM分析表明 ,其在水溶液中为平均粒径约 40nm的理想球形。四球机实验结果表明 ,一定浓度 (质量分数为 0 5 % )的富勒烯共聚物可有效增强抗磨能力。磨斑表面的扫描电镜分析表明 ,磨痕浅 ,磨斑小。随着富勒烯三元共聚物含量的增加 ,摩擦系数从基础液 (质量分数为 2 %的三乙醇胺水溶液和质量分数为 0 5 %的烷基酚聚氧乙烯醚磷酸锌 )的 0 2 3 3快速下降到最小值0 0 61 5 ,承载能力从基础液的 1 3 5N上升至最大值 490N。A fullerene-styrene-methacrylic acid copolymer was synthesized via radical polymerization and characlerized by FTIR, UV-Vis and GPC. The copolymer is soluble in polar solvents such as water, methanol, acetone, tetrahydrofuran. TEM observation revealed its ideal spherical shape in water with an average diameter of about 40 nm. Four-ball machine tests indicated that addition of an amount of 0.5%(mass fraction) the fullerene copolymer to base stock can effectively increase the bearing capacity(P B value) and the antiwearing ability of the base stock(2%(mass fraction) of triethanolamine and 0.5%(mass fraction) of OPZ aqueous solution). The morphology study of the worn surfaces by SEM showed that addition of the copolymer leads to reduction of wear scar size and decrease of wear depth. With the increasing of the content of the fullerene copolymer, the friction coefficient reduces rapidly from 0.233 for base stock to minimum value of 0.061 5. With the increasing of the added fullerene cop/lymer, bearing capacity increases rapidly from 135 N for base stock to maximum value of 490 N.

关 键 词：富勒烯-苯乙烯-甲基丙烯酸共聚物纳米微球 合成 磨擦学性能 

分 类 号：O635[理学—高分子化学]