Refrigerating machine oil composition

A technology for refrigerating machine oil and composition, applied in the direction of lubricating composition, petroleum industry, etc., can solve problems such as damage to the integrity and efficiency of the refrigeration system, influence on the air tightness of the compressor, and acceleration of oil deterioration.

Inactive Publication Date: 2015-02-11
WUHAN UN LUBRICANT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Refrigeration compressors run at high temperature and high pressure for a long time, and the deterioration of oil is accelerated. For example, carbon deposits at the exhaust valve of the compressor due to oxidation affect the airtightness of the compressor, and acidic subst

Method used

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  • Refrigerating machine oil composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The components and contents of the refrigerating machine oil composition described in Example 1 are as follows: an alkylnaphthalene mixture containing C6~C7 substituted alkyl is selected, wherein the viscosity of the alkylnaphthalene mixture at 40°C is 5.0~9.0mm 2 / s, the addition amount is 59.0wt%, and then add the alkylnaphthalene mixture of C8~C9 substituted alkyl, wherein the viscosity of the alkylnaphthalene mixture at 40°C is 22~26mm 2 / s, the addition amount is 38.44wt%, antiwear agent tricresyl phosphate 4wt%, antioxidant 2,6-di-tert-butyl p-cresol 0.5wt%, oily agent oleic acid amide 0.05wt%, corrosion inhibitor ( 2~mercaptobenzothiadiazole) 0.01wt%, antifoaming agent (simethicone) 10PPM, the viscosity of the refrigerating machine oil composition at 40°C is 10.2mm 2 / s.

Embodiment 2

[0027] The components and contents of the refrigerating machine oil composition described in Example 2 are as follows: an alkylnaphthalene mixture containing a C8-C9 substituted alkyl group is selected, wherein the viscosity of the alkylnaphthalene mixture at 40°C is 22-26 mm 2 / s, the addition amount is 99.5wt%, anti-wear agent triphenyl phosphate 0.25wt%, antioxidant 2,6-di-tert-butyl-p-cresol 0.1wt%, butyl-octyldiphenylamine 0.1wt%, Oily agent butyl stearate 0.05wt%, the viscosity of the refrigerating machine oil composition at 40°C is 21.5mm 2 / s.

Embodiment 3

[0028] The components and contents of the refrigerating machine oil composition described in Example 3 are as follows: an alkylnaphthalene mixture containing C10-C12 substituted alkyl is selected, wherein the viscosity of the alkylnaphthalene mixture at 40°C is 28-35mm 2 / s, the addition amount is 80wt%, anti-wear agent tricresyl phosphate 8wt%, triphenyl thiophosphate 2wt%, antioxidant 2,6-di-tert-butyl p-cresol 1.5wt%, oily agent methyl oleate 7.95wt% ester, 0.05wt% oleic acid amide, 0.05wt% corrosion inhibitor (2-mercaptobenzothiadiazole), 100PPM antifoaming agent (simethicone), and the viscosity of the refrigerating machine oil composition at 40°C is 33.4mm 2 / s.

[0029] Each refrigerating machine oil combination in the embodiment also added 0.01% corrosion inhibitor (2-mercaptobenzothiadiazole) and 10PPM antifoaming agent (simethicone).

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Abstract

The invention describes a refrigerating machine oil composition. The refrigerating machine oil composition is applicable to lubrication of a refrigerating compression system using a hydrocarbon working medium refrigerant. The refrigerating machine oil composition consists of 80-99.5wt% of alkyl naphthalene base oil and 0.5-20wt% of additives used for improving the property of an oil product. The refrigerating machine oil composition has a kinematic viscosity of 2-100mm<2>/s at 40 DEG C. The refrigerating machine oil composition has excellent high-temperature stability and oxidization resistance, has good compatibility with a refrigerant at a low temperature, is outstanding in abrasion resistance and can be used stably in a refrigerating system for a long time under a high-temperature and high-pressure condition.

Description

technical field [0001] The invention belongs to the field of refrigerating machine oil and provides a refrigerating machine oil composition with excellent thermal stability, which is mainly used for the lubrication of compressors using hydrocarbon refrigerants such as R600a and R290. Background technique [0002] The working principle of the compression refrigeration system is to use the refrigerant to vaporize and volatilize, absorb the heat of the surrounding medium, reduce the temperature for cooling, and then compress the refrigerant through the compressor, liquefy the condenser to dissipate heat, and then re-gasify, and so on. . The compressor is the key to this kind of refrigeration system. The refrigeration oil plays the roles of lubrication, heat dissipation, sealing and anticorrosion in the compressor, which has a significant impact on the efficiency of the refrigeration system and the life of the compressor. It is very important for compression refrigeration syste...

Claims

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Application Information

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IPC IPC(8): C10M169/04C10N40/30
Inventor 赵建平
Owner WUHAN UN LUBRICANT TECH
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