阅读说明：本技术 一种空压机冷却液组合物及其制备方法 (Air compressor cooling liquid composition and preparation method thereof ) 是由 耿伟 于 2020-12-11 设计创作，主要内容包括：本发明属于空压机冷却液技术领域,本发明提供了一种空压机冷却液组合物及其制备方法。本发明为了提高空压机油的热安定性、高温抗氧化性能及抗水解性能,将5-30％多元醇酯基础油；70-93％聚α-烯烃(PAO)基础油；0.5-0.8％胺类抗氧剂；0.25-0.5％酚类抗氧剂；0.4-0.6％氨基甲酸酯；0.05-0.1％铁缓蚀剂；0.05-0.1％铜缓蚀剂；10-20ppm消泡剂；10-30ppm破乳剂混合,制备得到空压机冷却液,本发明解决了空压机冷却液存在高温抗氧化性能及抗水解性能等问题,具有广泛的市场前景。(The invention belongs to the technical field of air compressor cooling liquid, and provides an air compressor cooling liquid composition and a preparation method thereof. In order to improve the heat stability, high-temperature oxidation resistance and hydrolysis resistance of the air compressor oil, 5-30% of polyol ester base oil is added; 70-93% Polyalphaolefin (PAO) base oil; 0.5-0.8% of amine antioxidant; 0.25-0.5% of phenolic antioxidant; 0.4-0.6% of carbamate; 0.05-0.1% of an iron corrosion inhibitor; 0.05-0.1% of copper corrosion inhibitor; 10-20ppm defoamer; the air compressor cooling liquid is prepared by mixing 10-30ppm of demulsifiers, the problems of high-temperature oxidation resistance, hydrolysis resistance and the like of the air compressor cooling liquid are solved, and the air compressor cooling liquid has wide market prospect.)

1. The air compressor cooling liquid composition is characterized in that: the air compressor cooling liquid comprises the following components in percentage by weight: 5-30% of polyol ester base oil; 70-93% Polyalphaolefin (PAO) base oil; 0.5-0.8% of amine antioxidant; 0.25-0.5% of phenolic antioxidant; 0.4-0.6% of carbamate; 0.05-0.1% of an iron corrosion inhibitor; 0.05-0.1% of copper corrosion inhibitor; 10-20ppm defoaming agent and 10-30ppm demulsifier.

2. The air compressor coolant composition as claimed in claim 1, wherein: the amine antioxidant is one or a mixture of dialkyl diphenylamine, 4' -diisooctyl diphenylamine, dioctyl diphenylamine, dinonyl diphenylamine and butyl octyl diphenylamine.

3. The air compressor coolant composition as claimed in claim 1, wherein: the phenolic antioxidant is selected from one or a mixture of 2, 6-di-tert-butyl-p-cresol, 4' -methylene-bis (2, 6-di-tert-butylphenol) and L115 antioxidant.

4. The air compressor coolant composition as claimed in claim 1, wherein: the iron corrosion inhibitor is selected from imidazoline derivatives.

5. The air compressor coolant composition as claimed in claim 1, wherein: the copper corrosion inhibitor is one or a mixture of more of benzotriazole or thiadiazole derivatives.

6. The air compressor coolant composition as claimed in claim 1, wherein: the defoaming agent is selected from organosilicon or non-silicon defoaming agents.

7. The air compressor coolant composition as claimed in claim 1, wherein: the demulsifier is selected from oil-soluble demulsifiers.

8. The preparation method of the air compressor coolant composition according to any one of claims 1 to 7, characterized by comprising the following steps: adding polyol ester base oil, poly alpha-olefin (PAO) base oil, amine antioxidant, phenol antioxidant, carbamate, iron corrosion inhibitor and copper corrosion inhibitor into a reaction kettle, heating to 40-60 ℃, stirring at the speed of 1000-2000 r/min for 10-20 min, ultrasonically mixing at 20-50 KHz for 10-20 min, adding defoamer and demulsifier into the reaction kettle, heating to 35-45 ℃, stirring at the speed of 1000-2000 r/min for 10-20 min, ultrasonically mixing at 20-50 KHz for 3-5 min, and mixing to obtain air compressor cooling liquid.

Technical Field

The invention belongs to the technical field of air compressor cooling liquid, and provides an air compressor cooling liquid composition and a preparation method thereof.

Background

The coolant is used as a coolant for quickly removing heat and cooling the engine, so that the engine is effectively protected, and the problem caused by overheating is avoided. For this purpose, suitable coolants must have a suitable viscosity at the operating temperature and, for different engine applications, the coolant composition often differs considerably. Wherein the air compressor machine can produce a large amount of heats when work, and suitable temperature then can guarantee that the air compressor machine is in a very suitable operating temperature. When the temperature of the air compressor is too high, the efficiency of the air compressor is reduced, and even parts are broken down. Therefore, the air compressor needs to be cooled to ensure a proper operating temperature. Cooling fluid is typically added to the cooling system to assist in cooling.

The air compressor machine coolant liquid needs the effect that reaches to have: and (3) freezing prevention: under the condition of over-low temperature, the air compressor system is ensured not to be frozen, and the freezing temperature of the common antifreeze is generally between-20 ℃ and-45 ℃; and (3) boiling prevention: the anti-freezing liquid can not boil too early under the condition of high temperature, generally the boiling point of the common anti-freezing liquid is 104-108 ℃, and the boiling point is higher when the anti-freezing liquid is added into a cooling system and generates pressure; and (3) corrosion prevention: the anti-freezing solution can reduce corrosion to the cooling system, thereby reducing the water leakage problem caused by corrosion of the cooling system. Rust prevention: the high-quality anti-freezing solution can avoid the situation that a cooling system rusts, and if the cooling system rusts, the accelerated wear and the reduction of the heat conduction efficiency can be caused; in general, the antifreeze solution is not changed for a long time, and the functions of corrosion prevention, rust prevention and the like in the antifreeze solution are reduced, so that the cooling system is in failure and even rusty. The antifreeze is therefore generally replaced every 1.5 to 2 years.

At present, the domestic air compressor cooling liquid has poor thermal stability and high-temperature oxidation resistance, the kinematic viscosity and acid value of oil products are greatly increased, and the phenomenon of locking of a compressor head caused by poor lubrication is caused, so that equipment cannot normally work.

Therefore, how to improve the thermal stability, high temperature oxidation resistance and hydrolysis resistance of the air compressor oil becomes a technical problem to be solved urgently by those skilled in the art.

Disclosure of Invention

In view of the above problems, the present invention is directed to an air compressor coolant composition and a method for preparing the same,

the invention provides an air compressor cooling liquid composition which is prepared from the following raw materials in percentage by weight:

5-30% of polyol ester base oil; 70-93% Polyalphaolefin (PAO) base oil; 0.5-0.8% of amine antioxidant; 0.25-0.5% of phenolic antioxidant; 0.4-0.6% of carbamate; 0.05-0.1% of an iron corrosion inhibitor; 0.05-0.1% of copper corrosion inhibitor; 10-20ppm defoamer; 10-30ppm demulsifier.

Further, the polyol ester base oil is available from Priolube 3970 of Poa, UK, Pricelo chemical Co., Ltd, PrEco 3009 of Shanghai, or a mixture of both; can remove sludge, increase the sensitivity of the additive, and solve the problems of the sealing property of rubber and the like.

Further, the poly alpha-olefin (PAO) base oil is one or a mixture of PAO-4, PAO-6, PAO-8, PAO-65, PAO-100 and PAO-150 base oil.

Preferably, the PAO-150 and the PAO-6 are mixed according to the mass ratio of 2-3: 7-8; the mixed base oil obtained by mixing the PAO with specific types and quality can obtain excellent viscosity index, can provide protection effect at wider environmental temperature, and has stable viscosity fluctuation in the whole life cycle, thereby having excellent oxidation resistance and longer service cycle.

Further, the amine antioxidant is selected from one or a mixture of dialkyl diphenylamine, 4' -diisooctyl diphenylamine, dioctyl diphenylamine, dinonyl diphenylamine and butyl octyl diphenylamine; the amine antioxidant can play a role in improving the aging resistance of oil products and prolonging the oil change period.

Further, the phenolic antioxidant is selected from one or a mixture of 2, 6-di-tert-butyl-p-cresol, 4' -methylenebis (2, 6-di-tert-butylphenol) and IRGANOX L115 (BASF, Germany) antioxidant; the phenol antioxidant can improve the aging resistance of the oil product and inhibit the generation of sludge.

Preferably, the amine antioxidant is preferably a mixture of butyl octyl diphenylamine and dialkyl diphenylamine in a mass ratio of 1: 1-2, the phenol antioxidant is preferably IRGANOX L115, and the amine antioxidant and the phenol antioxidant are preferably mixed in a mass ratio of 1.8-2.2: 1, so that the effects of improving thermal stability and high-temperature oxidation resistance can be achieved.

The influence of the types and the addition amounts of the antioxidants on the air compressor cooling liquid is different, the antioxidant obtained by mixing the antioxidant disclosed by the invention not only enables the oxidation stability of the air compressor cooling liquid to be obviously improved, but also has a better antioxidant effect even at high temperature, and the initial oxidation problem of the air compressor cooling liquid can be obviously improved after the mixed antioxidant is cooperated with polyalpha-olefin (PAO) base oil, and the synergistic effect is mainly benefited from different antioxidant mechanisms among compound antioxidants.

Wherein, the addition of the carbamate can play the roles of antioxidation, extreme pressure, ashless and antiwear.

Further, the iron corrosion inhibitor is selected from imidazoline derivatives, such as BXH-102 (environmental protection science and technology Co., Ltd., North Hubei)

Further, the copper corrosion inhibitor is selected from one or more of benzotriazole or thiadiazole derivatives.

Further, the defoamer is selected from silicone or non-silicone defoamers. Such as dimethicone, ethyl and tolyl silicones, polydimethyl siloxane, XST-E200 non-silicone defoamers, and the like.

Further, the demulsifier is selected from oil-soluble demulsifiers, such as one of BXG-403 (environmental protection technologies, Inc. of North Hubei), T1001, DL32, and the like.

According to the weight percentage, adding polyol ester base oil, poly alpha-olefin (PAO) base oil, amine antioxidant, phenol antioxidant, carbamate, iron corrosion inhibitor and copper corrosion inhibitor into a reaction kettle, heating to 40-60 ℃, stirring at the speed of 1000-2000 r/min for 10-20 min, ultrasonically mixing at 20-50 KHz for 10-20 min, adding defoaming agent and demulsifier into the reaction kettle, heating to 35-45 ℃, stirring at the speed of 1000-2000 r/min for 10-20 min, ultrasonically mixing at 20-50 KHz for 3-5 min, and mixing to obtain the air compressor cooling liquid.

Compared with the prior art, the invention has the beneficial effects that:

the base oil and the antioxidant are compounded, wherein the base oil is compounded according to the antioxidant mechanism of the antioxidant, and the base oil and the antioxidant have a synergistic effect, so that the prepared air compressor cooling liquid has the performances of high oxidation stability, good low-temperature fluidity, strong prevention of formation of dirt and oil dirt, extremely high hydrolytic stability and the like, and the service cycle and the use effect of the air compressor cooling liquid are obviously improved.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments.

Example 1

20% polyol ester base oil (PriEco 3009);

78.46% Polyalphaolefin (PAO) base oil (mixed by PAO-150 and PAO-6 in a mass ratio of 2: 8);

0.6 percent of amine antioxidant (the mass ratio of butyl octyl diphenylamine to dialkyl diphenylamine is 1: 1);

0.3% phenolic antioxidant (L115);

0.5% carbamate;

0.08% iron corrosion inhibitor (BXH-102);

0.055% of copper corrosion inhibitor (benzotriazole);

20ppm antifoam (dimethicone);

30ppm demulsifier (DL 32).

Taking polyol ester base oil, poly alpha-olefin (PAO) base oil, amine antioxidant, phenol antioxidant, carbamate, iron corrosion inhibitor and copper corrosion inhibitor, adding the polyol ester base oil, the PAO base oil, the amine antioxidant, the phenol antioxidant, the carbamate, the iron corrosion inhibitor and the copper corrosion inhibitor into a reaction kettle, heating the mixture to 40 ℃, stirring the mixture for 15min at the speed of 1000r/min, ultrasonically mixing the mixture for 15min at 30KHz, adding a defoaming agent and a demulsifying agent into the reaction kettle, heating the mixture to 40 ℃, stirring the mixture for 15min at the speed of 1500r/min, ultrasonically mixing the mixture for 5min at 40KHz, and mixing the mixture to obtain the air compressor cooling.

Example 2

18% polyol ester base oil (Priolube 3970);

80.31% Polyalphaolefin (PAO) base oil (mixed by PAO-150 and PAO-6 in a mass ratio of 3: 7);

0.7 percent of amine antioxidant (the mass ratio of butyl octyl diphenylamine to dialkyl diphenylamine is 1: 2);

0.25% phenolic antioxidant (L115);

0.6% carbamate;

0.07% iron corrosion inhibitor (BXH-102);

0.067% copper corrosion inhibitor (benzotriazole);

15ppm antifoam (tolyl silicone oil);

15ppm demulsifier (BXG-403)

Taking polyol ester base oil, poly alpha-olefin (PAO) base oil, amine antioxidant, phenol antioxidant, carbamate, iron corrosion inhibitor and copper corrosion inhibitor, adding the polyol ester base oil, the PAO base oil, the amine antioxidant, the phenol antioxidant, the carbamate, the iron corrosion inhibitor and the copper corrosion inhibitor into a reaction kettle, heating the mixture to 60 ℃, stirring the mixture for 10min at the speed of 1500r/min, ultrasonically mixing the mixture for 20min at 50KHz, adding a defoaming agent and a demulsifying agent into the reaction kettle, heating the mixture to 45 ℃, stirring the mixture for 20min at the speed of 2000r/min, ultrasonically mixing the mixture for 5min at 50KHz, and mixing the mixture to obtain the air compressor cooling.

Example 3

25% polyol ester base oil (PriEco 3009);

73.54% Polyalphaolefin (PAO) base oil (mixed by PAO-150 and PAO-6 in a mass ratio of 2: 8);

0.6 percent of amine antioxidant (the mass ratio of butyl octyl diphenylamine to dialkyl diphenylamine is 1: 2);

0.3% phenolic antioxidant (L115);

0.4% carbamate;

0.056% iron corrosion inhibitor (BXH-102);

0.1% copper corrosion inhibitor (benzotriazole);

10ppm antifoam;

30ppm demulsifier (BXG-403)

Taking polyol ester base oil, poly alpha-olefin (PAO) base oil, amine antioxidant, phenol antioxidant, carbamate, iron corrosion inhibitor and copper corrosion inhibitor, adding the polyol ester base oil, the PAO base oil, the amine antioxidant, the phenol antioxidant, the carbamate, the iron corrosion inhibitor and the copper corrosion inhibitor into a reaction kettle, heating the mixture to 40 ℃, stirring the mixture for 10min at the speed of 2000r/min, then ultrasonically mixing the mixture for 10min at 30KHz, then adding a defoaming agent and a demulsifying agent into the reaction kettle, heating the mixture to 35 ℃, stirring the mixture for 20min at the speed of 1000r/min, then ultrasonically mixing the mixture for 3min at 30KHz, and mixing the mixture to obtain the.

Comparative example 1

Comparative example 1 is different from example 1 in that: the Polyalphaolefin (PAO) base oil was PAO-4, and the other operations were the same as in example 1.

Comparative example 2

Comparative example 2 differs from example 1 in that: the same procedures as in example 1 were repeated except that 2, 6-di-t-butyl-p-cresol was used instead of L115 in terms of its equivalent mass.

Comparative example 3

Comparative example 3 differs from example 1 in that: the same procedure as in example 1 was repeated except that the dialkyldiphenylamine and the like were replaced by butyloctyldiphenylamine.

The performance of the air compressor cooling liquid prepared in examples 1 to 3 and comparative examples 1 to 3 was tested, and the details are shown in table 1.

TABLE 1

As can be seen from table 1, the air compressor coolants prepared in examples 1 to 3 were significantly superior to those obtained in comparative examples 1 to 3.

The above is merely an illustration of the preferred embodiments of the invention, and the scope of the invention is not limited thereto, and any modifications made by those skilled in the art within the scope of the claims of the invention fall within the scope of the invention.