A kind of refrigerating machine oil composition for refrigerating compressor

A technology for refrigeration compressors and refrigerating machine oils, which is applied in lubricating compositions and the petroleum industry, etc. It can solve the problems of compressor damage, safety, water absorption resistance, and poor electrical insulation, and achieve excellent electrical insulation. The effect of water absorption and good abrasion resistance

Active Publication Date: 2017-06-16
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a kind of refrigerating machine oil composition for refrigerating compressor, described refrigerating machine oil composition is to use polyalkane glycol ether containing polytetrahydrofuran segment as lubricating oil , aiming to solve the problem that the existing refrigerating machine oil composition containing polyalkane glycol ether lubricating oil is easy to cause compressor damage and use safety due to poor water absorption resistance and electrical insulation

Method used

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  • A kind of refrigerating machine oil composition for refrigerating compressor
  • A kind of refrigerating machine oil composition for refrigerating compressor

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preparation example Construction

[0026] The preparation method of the polyalkane glycol ether is as follows: at 0°C and atmospheric pressure, add dichloroethane solvent into a round bottom flask with a stirring device and a condenser, then add tetrahydrofuran, propylene oxide And the primary alcohol and boron trifluoride diethyl ether catalyst containing tetrahydrofuran propylene oxide, the temperature is raised to 40-60 ° C for 4-24 hours, and the system is allowed to stand at room temperature after the reaction, the catalyst is separated and removed, and the unreacted raw materials and solvent are distilled off. After the product is purified, the known end-capping technology is used for post-capping treatment to obtain a polyether compound containing polytetrahydrofuran chain segments. The preparation method of the polyalkane glycol ether is well known to those skilled in the art and will not be repeated here.

[0027] In the present invention, the number average molecular weight (Mn) of the polyalkane glyc...

Embodiment 1-3

[0040] The preparation of embodiment 1-3 polyalkane glycol ether:

Embodiment 1

[0041] Example 1: At 0°C and atmospheric pressure, add 205.8g of ethylene dichloride as a solvent to a round bottom flask with a stirring device and a condenser, then add 36g of tetrahydrofuran, 175g of propylene oxide, and tetrahydrofuran of propylene oxide 6% primary alcohol and 0.18% boron trifluoride ether catalyst in total moles.

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Abstract

The invention discloses a refrigerating machine oil composition for a refrigeration compressor. The composition comprises lubricating oil and a refrigerant, wherein the lubricating oil is polyalkane glycol ether containing polytetrahydrofuran chain segment; the structural formula of the polyalkane glycol ether is R<1>O-[CH2(CH3)CHO]m-(CH2CH2CH2CH2O)n-R<2>, wherein R<1> and R<2> represent hydrogen atom, C1-C18 alkyl group or C2-C18 acyl group respectively; the R<1> and R<2> do not represent hydrogen atom at the same time; m and n are both an integer greater than or equal to 1; and m / (m+n) is 0.5-0.99. The lubricating oil has moderate compatibility with hydrofluorocarbon and natural refrigerants such as carbon dioxide, hydrocarbons and the like; and extremely low water absorption and excellent electrical insulating property of the lubricating oil can be maintained while keeping proper viscosity and good abrasion resistance.

Description

technical field [0001] The invention relates to a refrigerating machine oil composition used in a refrigerating compressor, in particular to a refrigerating machine oil composition using a polyalkane glycol ether containing a polytetrahydrofuran segment as lubricating oil for a refrigerating compressor. Background technique [0002] Due to environmental problems such as the destruction of the ozone layer and the global warming effect, in recent years, many countries have been researching a new generation of refrigerants to replace chlorofluorocarbon or hydrochlorofluorocarbon refrigerants. The environmental friendliness of a refrigerant is generally characterized by a standard called "ozone depletion potential (ODP)" and a standard called "global warming potential (GWP)". Hydrofluorocarbon refrigerants (HFC) are refrigerants developed after chlorofluorocarbons and hydrochlorofluorocarbons to replace chlorofluorocarbons and hydrochlorofluorocarbons that destroy the ozone laye...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C10M107/30C10N40/30
Inventor杨忠学张玲孙蓉杨瑞杰刘强赵涛郭慧子
OwnerSHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI