ENGINE OIL VISCOSITY INDEX IMPROVER BEHAVIOUR AT EXTENDED SHEAR STABILITY TEST
[摘要] Multigrade engine oils among numerous additives, always contain also viscosity index improvers. These additives are special types of polymers, which in small concentration significantly improve engine oils rheological properties,...
[发布日期] [发布机构]
[效力级别] [学科分类] 海洋学与技术
[关键词] viscosity improvers;polyalkylmetacryilate VI improver (PAMA);multigrade motor oil;shear stability;viewpoint of increasing requirement [时效性]
