| 摘要 |
PURPOSE:To suppress thermal decomposition of polyolester based refrigerating machine oil. CONSTITUTION:Polyolester based oil 18 having compatibility with 1,1,1,2- tetrafluoroethane as a refrigerant is used. The polyester based oil contains additives of 0.05wt.% 2,6-di-3-butyl-p-cresol, 0.1wt.% heptylamine and 0.3wt.% tricresyl phosphate. These additives suppress corrosion of roller and vane of sliding members by thermal decomposition of polyolester based oil and prevent wear of the roller and vane. |
