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 1.金属皂类金属皂类既是润滑剂,又是一种热稳定剂;内、外润滑作用兼有。常用金属皂类润滑剂及加入量是:PbSt,0.2~1.0份;ZnSt,0.15份;LiSt,0.6份;BaSt,0.2~1.0份;CaSt,0.2~1.5份。2.烃类烃类按分子质量大小可分为液体石蜡(C16~C21)、固体石蜡 (共 882 字) [阅读本文] >>