Refrigerant oil composition

A technology for refrigerating machine oil and composition, applied in the directions of lubricating composition, petroleum industry, etc., can solve the problems of insufficient low temperature performance, lack of naphthenic oil resources, insufficient scratch resistance, etc., and achieves low friction coefficient, good heat Chemical stability, improved scratch resistance

Inactive Publication Date: 2014-12-10
WUHAN UN LUBRICANT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the lack of existing naphthenic oil resources, overcome the low-temperature performance or insufficient scratch resistance of the refrigeration oil composition in the prior art, and provide a material with good low-temperature compatibility with hydrocarbon refrigerants Low energy consumption refrigeration machine oil composition with wide sources and excellent lubricating performance

Method used

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  • Refrigerant oil composition

Examples

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Comparison scheme
Effect test

Embodiment 1

[0038] This example is used to illustrate the refrigerating machine oil composition and its preparation method provided by the present invention.

[0039] Using hydrogenated paraffin base oil with a distillation range of 300-350°C and alkylbenzene with a distillation range of 270-330°C as the base oil, adjust the ratio of paraffin base oil to alkylbenzene to obtain 3.0-5.5mm 2 / s viscosity. Add 2% of dibutylphenyl phenyl phosphate additives, 0.5% of Additin 7110 phenol antioxidant, 0.1% of methyl oleate, 0.01% of 2-mercaptobenzothiadiazole, and 30PPM of silicon defoamer to prepare the described Refrigeration oil, its physical and chemical properties are shown in Table 1.

Embodiment 2

[0041] Using hydrogenated paraffin base oil with a distillation range of 300-350°C and alkylbenzene with a distillation range of 270-330°C as the base oil, adjust the ratio of paraffin base oil to alkylbenzene to obtain 5.0-7.0mm 2 / s viscosity. Add 3% triphenyl phosphite, 0.25% Irganox 135 phenol antioxidant, 0.25% butyl, octyl diphenylamine, 0.05% butyl oleate, 0.01 N, N-dialkylaminomethylene benzotriazole % deployed into refrigeration oil, its physical and chemical properties are shown in Table 1.

Embodiment 3

[0043] Using hydrogenated paraffin base oil with a distillation range of 300-350°C and alkylbenzene with a distillation range of 270-330°C as the base oil, adjust the ratio of paraffin base oil and alkylbenzene to obtain 6.0-7.5mm 2 / s viscosity. Add 1% tricresyl phosphate, 1% triphenyl phosphate, 0.4% Irganox 135 phenolic antioxidant, 0.1% Irganox L57 amine antioxidant, 0.01% 2-mercaptobenzothiadiazole, silicon antifoam 10PPM is formulated into refrigeration oil, and its physical and chemical properties are shown in Table 1.

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Abstract

The invention provides a refrigerant oil composition, comprising base oil and an additive. The refrigerant oil composition is suitable for lubricating a refrigeration compressor taking a hydrocarbon working medium as a refrigerant; the viscosity of the refrigerant oil composition at 40 DEG C is 2.0-7.5mm<2>/s; and the refrigerant oil composition comprises 90-99.5wt% of base oil and 0.5-10wt% of additive. The refrigerant oil composition is characterized in that the base oil is paraffinic oil and alkyl benzene oil; and the additive mainly is a phosphide functional agent. The refrigerant oil composition provided by the invention has excellent low temperature resistance and good refrigerant compatibility, and enough antiwear property and scratch protecting property, can keep stable performance for a long period of time, and does not block a capillary tube in a refrigerating cycle.

Description

technical field [0001] The invention belongs to the field of refrigerating machine oil, in particular to a refrigerating machine oil composition with low energy consumption and excellent lubricating performance. Background technique [0002] With the reduction of the ozone layer and the gradual expansion of the greenhouse effect, the refrigerants used in the refrigeration system began to change from the traditional Freon R12, R22, HFC to natural refrigerants. Since the 1990s, countries around the world Extensive research has been done on new chlorine-free refrigerants and associated refrigeration oils. The chlorine-free refrigerant tetrafluoroethane (R134a) developed by DuPont of the United States does not destroy the ozone layer, and its main performance is very close to that of R12, so it has been widely used. However, it was later found that R134a still produces a greenhouse effect, and at the same time, the refrigerant has very strict requirements on the refrigeration s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10N40/30
Inventor 赵建平
Owner WUHAN UN LUBRICANT TECH
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