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Composite ester type nano refrigerating machine oil and preparation method thereof

A technology of refrigerating machine oil and double ester type, which is applied in the petroleum industry, base materials, lubricating compositions, etc. It can solve the problems of poor compatibility, poor viscosity-temperature performance, etc., and achieve excellent lubricating performance, good stability, and compatibility good effect

Active Publication Date: 2022-03-29
盘锦北方沥青股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, synthetic ester-type refrigerating machine oils have the problems of poor viscosity-temperature performance, and the intermiscibility with refrigerants significantly deteriorates with the increase of viscosity. As a kind of ester lubricating oil, complex esters have high viscosity and high viscosity-temperature properties. Excellent performance characteristics, can be used as a viscosity modifier

Method used

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  • Composite ester type nano refrigerating machine oil and preparation method thereof
  • Composite ester type nano refrigerating machine oil and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A kind of preparation method of complex ester type nanometer refrigerating machine oil, concrete steps are as follows:

[0038] (1) 530.6g diethylene glycol, 438.4g adipic acid, 4.4g nano-zinc oxide and 153.4g toluene are mixed to carry out the first step esterification;

[0039] (2) Then add 865.2g isooctanoic acid, carry out the second step esterification reaction, obtain reaction product;

[0040] (3) Finally, the reaction product is refined to obtain the double ester type nano-refrigeration machine oil.

[0041] In step (1), the first step of the esterification reaction is carried out under the protection of high-purity nitrogen, and the nitrogen flow rate is 20mL / min.

[0042] In the step (1), the process condition of the first step esterification reaction is: 130° C. for 150 minutes of stirring reaction.

[0043] In the step (2), the process condition of the second step esterification reaction is: 190° C. stirring for 100 minutes.

[0044] In step (3), the spec...

Embodiment 2

[0046] A kind of preparation method of complex ester type nanometer refrigerating machine oil, concrete steps are as follows:

[0047] (1) 636.7g of diethylene glycol, 438.4g of adipic acid, 6.5g of nano-alumina and 197.2g of petroleum ether were mixed for the first step of esterification;

[0048] (2) Then add 1297.8g isooctanoic acid, carry out the second step esterification reaction, obtain reaction product;

[0049] (3) Finally, the reaction product is refined to obtain the double ester type nano-refrigeration machine oil.

[0050] In step (1), the esterification reaction in the first step is carried out under the protection of high-purity nitrogen, and the nitrogen flow rate is 80mL / min.

[0051] In step (1), the process condition of the first step esterification reaction is: 180° C. for 170 minutes of stirring reaction.

[0052] In step (2), the process condition of the second step esterification reaction is: 230° C. for 120 minutes of stirring reaction.

[0053] In s...

Embodiment 3

[0055] A kind of preparation method of complex ester type nanometer refrigerating machine oil, concrete steps are as follows:

[0056] (1) 600g of diethylene glycol, 438.4g of adipic acid, 5.5g of metal oxide nanomaterials and 180g of xylene were mixed for the first step of esterification;

[0057] (2) Then add 1000g isooctanoic acid, carry out the second step esterification reaction, obtain reaction product;

[0058] (3) Finally, the reaction product is refined to obtain the double ester type nano-refrigeration machine oil.

[0059] In step (1), the metal oxide nanomaterial is prepared by the following method:

[0060] (A) First ultrasonically disperse 0.003g graphene oxide in 20g deionized water, then add 10g0.04mol / L manganese nitrate solution, 3g0.008mol / L cerium nitrate solution, continue ultrasonic dispersion evenly, and then slowly Add 28% ammonia solution dropwise until pH = 10, add 0.15g sodium borohydride, stir and react at 85°C for 3 hours, centrifuge to collect t...

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Abstract

The invention discloses complex ester type nano refrigerating machine oil and a preparation method thereof. The preparation method comprises the following steps: firstly, mixing diethylene glycol, binary acid, a metal oxide nano material and a water carrying agent, and carrying out first-step esterification reaction; then adding monobasic fatty acid with the carbon chain length of 5-12, and carrying out second-step esterification reaction to obtain a reaction product; and finally, refining the reaction product. The product is excellent in lubricating property, good in stability and good in intermiscibility with refrigerants.

Description

technical field [0001] The invention relates to a complex ester type nano-refrigeration machine oil and a preparation method thereof, in particular to. The invention belongs to the technical field of industrial lubricating oil. Background technique [0002] Refrigeration oil is a special lubricating oil for refrigeration compressors, which plays the role of lubrication, sealing and cooling. In addition to excellent lubricating performance, viscosity-temperature performance, oxidation stability and chemical stability, high-quality refrigeration oil should also have good compatibility with refrigerants. With the replacement of refrigerants, the development of the corresponding refrigeration oil not only affects the working efficiency and life of the compressor, but also is crucial to reducing energy consumption. [0003] HFCs refrigerant refrigeration oils are roughly divided into two types: synthetic esters and polyethers. These two types of base oils have their own strengt...

Claims

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Application Information

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IPC IPC(8): C10M105/44C10M169/04C10M177/00C10N30/06C10N40/30
CPCC10M105/44C10M169/04C10M177/00C10M2201/062C10M2201/041C10M2201/14C10M2207/3025C10N2030/06C10N2040/30Y02P20/10
Inventor 崔建军陈小雪赵明泽董天亮李荒高健瑜刘英
Owner 盘锦北方沥青股份有限公司
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