Processing technology for preparing fire-resistant hydraulic fluid by using oil for electric power

Abstract

The invention discloses a processing technology for preparing fire-resistant hydraulic fluid by using oil for electric power, and relates to the technical field of fire-resistant hydraulic fluid. According to the processing technology for preparing the fire-resistant hydraulic fluid by using the oil for electric power, nano copper powder is added, so that the nano copper powder is gradually deposited on the surface of a friction pair under the action of friction acting force in the friction process, deep furrows formed by friction on two friction surfaces are filled, and the self-repairing effect on the friction surfaces is achieved; due to the low melting point and good ductility of the nano copper powder, heat generated in the friction process melts the nano copper powder, a layer of smooth and compact protective film is spread on the friction surfaces, the friction factor is effectively reduced, the stability of the low friction factor is achieved, meanwhile, the protective film enables the two friction surfaces to form two separated surfaces, and therefore the friction coefficient is effectively reduced. The wear resistance is obviously improved.

Description

Technical Field

[0001] The invention relates to the technical field of fire-resistant hydraulic fluid, in particular to a processing technology for preparing fire-resistant hydraulic fluid by utilizing power oil. Background Art

[0002] The Chinese patent with publication number CN102010782A discloses a fire-resistant hydraulic fluid composition and a preparation method thereof, wherein the composition comprises the following raw materials in percentage by weight: 30-40% of distilled water, 30-40% of ethylene glycol, 10-20% of thickener, and 5-25% of pH stabilizer; the thickener is selected from any one or a mixture of any several of polyethers; the pH stabilizer is a non-single-component alkaline mixed regulator, comprising fatty acid ammonium and benzotriazole, and its pH value is 9.0-10.0. The fire-resistant hydraulic fluid composition provided by the present invention has excellent fire resistance, cold resistance, wear resistance, rust resistance and foam resistance, a wide range of applicable temperature, good anti-corrosion performance, extremely long service life, no toxic side effects on the human body, and no pollution to the atmosphere, environment and water sources. However, the friction resistance and flame retardancy of the flame retardant hydraulic fluid prepared by the above-mentioned prior art solutions need to be further improved; therefore, the present invention provides a processing technology for preparing flame retardant hydraulic fluid using power oil to solve the above-mentioned problems. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a processing technology for preparing a flame-resistant hydraulic fluid using electric power oil, which solves the problems mentioned in the above background technology.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a processing technology for preparing fire-resistant hydraulic fluid using power oil, specifically comprising the following preparation steps:

[0005] Step 1: Add polyether and deionized water to ethylene glycol at a temperature of 25 to 40° C., and stir evenly at a speed of 100 to 150 r / min;

[0006] Step 2: Add antioxidant, anti-wear extreme pressure agent, antiseptic bactericide, anti-foaming additive and pH stabilizer, and mix well;

[0007] Step 3: Pour in nano copper powder and stir evenly to obtain flame resistant hydraulic fluid;

[0008] The weight proportions of each component added are: 35-55 parts of ethylene glycol, 5-15 parts of polyether, 35-50 parts of deionized water, 1.6-2.8 parts of antioxidant, 3-4.5 parts of anti-wear extreme pressure agent, 1.5-3 parts of antiseptic and fungicide, 0.04-0.1 parts of anti-foaming additive, 0.5-3 parts of pH stabilizer, and 0.8-1.6 parts of nano copper powder;

[0009] The antiseptic and bactericidal agent is a complex of 1,3,5-tris(2-hydroxyethyl)-hexahydro-triazine and 3-iodo-2-propynylbutylcarbamate; the anti-foaming additive is selected from one or more of emulsified silicone oil and phosphate ester; and the pH stabilizer is selected from one or more of monoethanolamine, diethanolamine, triethanolamine, isopropanolamine and diglycolamine.

[0010] Preferably, the preservative and bactericidal agent is a complex of 1,3,5-tris(2-hydroxyethyl)-hexahydro-triazine and 3-iodo-2-propynylbutylcarbamate; the anti-foaming additive is selected from one or more of emulsified silicone oil and phosphate ester; the pH stabilizer is selected from one or more of monoethanolamine, diethanolamine, triethanolamine, isopropanolamine and diglycolamine.

[0011] Preferably, the preparation method of the nano copper powder is:

[0012] S1. Add ethylene glycol to the anhydrous copper sulfate solution and stir until completely dissolved;

[0013] S2, add polyvinyl pyrrolidone, raise the temperature to 30-35°C, and stir at a speed of 120-150 r / min for 25-35 min;

[0014] S3, pour sodium hydroxide into sodium borohydride, adjust its pH to 10.5-11, and then slowly add it dropwise to the solution of S2;

[0015] S4, after all the dropwise addition is completed, react for 25 to 30 minutes;

[0016] S5. After washing with distilled water for 3 to 5 times, soaking in distilled water for 40 to 50 minutes, taking out, drying, grinding and sieving in sequence, nano copper powder is obtained.

[0017] Preferably, the weight proportions of the components added to the nano copper powder are: 4.2-5.8 parts of anhydrous copper sulfate solution, 2.5-4.5 parts of ethylene glycol, 0.8-1.5 parts of polyvinyl pyrrolidone, 1.2-2.5 parts of sodium borohydride, and 0.6-1.8 parts of sodium hydroxide.

[0018] Preferably, in S3, the mass fraction of sodium hydroxide is 20% to 30%.

[0019] Preferably, the antioxidant is composed of diphenylamine and monophenol, and the mass ratio of diphenylamine to monophenol is 0.8:(0.5-0.8).

[0020] Preferably, the anti-wear extreme pressure agent is composed of a phosphorus-containing agent and a sulfur-phosphorus agent, and the mass ratio of the phosphorus-containing agent to the sulfur-phosphorus agent is 2.6:(0.05-0.08).

[0021] Preferably, the phosphorus-containing agent is selected from any one of phosphate ester, alkyl phosphite and acidic phosphate ester.

[0022] Preferably, the preparation method of the thiophosphorus agent is as follows: in a reactor equipped with an agitator and a condensing device, 4.5 to 8 parts of dialkyl dithiophosphoric acid, 1.5 to 3 parts of cyanuric chloride, 4.5 to 8 parts of anhydrous potassium carbonate and 4.5 to 8 parts of tetrahydrofuran are added, the temperature is raised to 60 to 85° C., and the thiophosphorus agent is obtained after reflux reaction for 8 to 12 hours.

[0023] Beneficial Effects

[0024] The present invention provides a processing technology for preparing fire-resistant hydraulic fluid using power oil. Compared with the prior art, it has the following beneficial effects:

[0025] (1) The processing technology for preparing flame-resistant hydraulic fluid using electric oil, through the addition of nano copper powder, enables the nano copper powder to gradually deposit on the surface of the friction pair under the action of friction force during the friction process, filling the deep furrows formed by the friction between the two friction surfaces, thereby achieving the self-repairing effect on the friction surface; and due to the low melting point and good ductility of the nano copper powder, the heat generated during the friction process causes the nano copper powder to melt and spread on the friction surface to form a smooth and dense protective film, effectively reducing the friction factor and achieving the stability of the low friction factor. At the same time, the protective film allows the two friction surfaces to form two separated surfaces, significantly improving their wear resistance.

[0026] (2) The process of preparing fire-resistant hydraulic fluid using power oil can effectively prevent the propagation of oxidation chain reaction by capturing free radicals through alkyl diphenylamine, while monophenol can interrupt the free radical chain reaction in the oxidation process by providing hydrogen atoms. The simultaneous use of the two can effectively enhance the antioxidant properties of the fire-resistant hydraulic fluid, extend the service life of the hydraulic fluid, maintain the chemical stability of the hydraulic fluid, reduce harmful products such as acidic substances and sludge generated by oxidation, and ensure that the fire-resistant properties of the fire-resistant hydraulic fluid are not affected.

[0027] (3) The processing technology for preparing fire-resistant hydraulic fluid using power oil, through the synergistic effect of phosphorus-containing agent and sulfur-phosphorus agent, makes the presence of sulfur element help to better protect the metal surface under high temperature and complex working conditions, and provides better conditions for the phosphorus-containing agent to play its fire-resistant effect. The phosphorus-containing agent forms a protective film during the combustion process, and the sulfur-phosphorus agent, in addition to forming a protective film, can also inhibit the occurrence of combustion reactions. The synergistic effect effectively improves the fire-resistant performance of the fire-resistant hydraulic fluid, allowing it to be used under more severe conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The SEM image of nano copper powder provided for the processing technology of preparing fire-resistant hydraulic fluid using power oil of the present invention. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Example 1

[0031] A process for preparing a fire-resistant hydraulic fluid using electric power oil, specifically comprising the following preparation steps:

[0032] Step 1: Add 5 g of polyether and 35 g of deionized water to 35 g of ethylene glycol at 25°C, and stir at a speed of 100 r / min;

[0033] Step 2: Add 1.6 g of antioxidant, 3 g of anti-wear extreme pressure agent, 1.5 g of 1,3,5-tris(2-hydroxyethyl)-hexahydro-triazine and 3-iodo-2-propynylbutylcarbamate complex in a mass ratio of 0.6:0.5, 0.04 g of emulsified silicone oil and 0.5 g of monoethanolamine, and mix well;

[0034] The antioxidant is a compound of diphenylamine and monophenol in a mass ratio of 0.8:0.5, and the anti-wear extreme pressure agent is a compound of phosphate ester and sulfur phosphorus agent in a mass ratio of 2.6:0.05.

[0035] The preparation method of the sulfur-phosphorus agent is as follows: in a reactor equipped with a stirrer and a condensing device, 4.5 g of dialkyl dithiophosphoric acid, 1.5 g of cyanuric chloride, 4.5 g of anhydrous potassium carbonate and 4.5 g of tetrahydrofuran are added, the temperature is raised to 60° C., refluxed for 8 hours and then purified to obtain the sulfur-phosphorus agent;

[0036] Step 3, preparation of nano copper powder: add 2.5g of ethylene glycol to 4.2g of anhydrous copper sulfate solution, stir until completely dissolved; add 0.8g of polyvinyl pyrrolidone, heat to 30°C, stir at a speed of 120r / min for 25min to obtain solution 1; pour 0.6 and 20% sodium hydroxide by mass into 1.2g of sodium borohydride, adjust its pH to 10.5, and slowly add it dropwise to solution 1; after all the additions are completed, react for 25min; wash with distilled water 3 times, soak in distilled water for 40min, then take out and dry, grind and sieve in turn to obtain nano copper powder;

[0037] Step 3: Pour in 0.8 g of nano copper powder and stir evenly to obtain the flame-resistant hydraulic fluid.

[0038] Example 2

[0039] A processing technology for preparing a fire-resistant hydraulic fluid using electric power oil specifically comprises the following preparation steps:

[0040] Step 1: Add 10 g of polyether and 45 g of deionized water to 45 g of ethylene glycol at 30°C, and stir at a speed of 130 r / min;

[0041] Step 2: Add 2.2 g of antioxidant, 3.8 g of anti-wear extreme pressure agent, 2.5 g of 1,3,5-tris(2-hydroxyethyl)-hexahydro-triazine and 3-iodo-2-propynylbutylcarbamate complex in a mass ratio of 0.6:0.7, 0.06 g of phosphate and 2 g of diethanolamine, and mix well;

[0042] The antioxidant is a compound of diphenylamine and monophenol in a mass ratio of 0.8:0.6, and the anti-wear extreme pressure agent is a compound of alkyl phosphite and sulfur phosphorus agent in a mass ratio of 2.6:0.06.

[0043] The preparation method of the sulfur-phosphorus agent is as follows: in a reactor equipped with a stirrer and a condensing device, 5.5 g of dialkyl dithiophosphoric acid, 2.5 g of cyanuric chloride, 5.5 g of anhydrous potassium carbonate and 6 g of tetrahydrofuran are added, the temperature is raised to 70° C., refluxed for 10 hours and then purified to obtain the sulfur-phosphorus agent;

[0044] Step 3, preparation of nano copper powder: add 3.5g of ethylene glycol to 5g of anhydrous copper sulfate solution, stir until completely dissolved; add 1.2g of polyvinyl pyrrolidone, heat to 32°C, stir at a speed of 130r / min for 30min to obtain solution 1; pour 1.2 and 25% sodium hydroxide by mass into 1.6g of sodium borohydride, adjust its pH to 10.8, and slowly add it dropwise to solution 1; after all the dropwise addition is completed, react for 28min; wash with distilled water 4 times, soak in distilled water for 45min, then take out and dry, grind and sieve in turn to obtain nano copper powder;

[0045] Step 3: Pour in 1.2 g of nano copper powder and stir evenly to obtain the flame-resistant hydraulic fluid.

[0046] Example 3

[0047] A processing technology for preparing a fire-resistant hydraulic fluid using electric power oil specifically comprises the following preparation steps:

[0048] Step 1: Add 15 g of polyether and 50 g of deionized water to 55 g of ethylene glycol at 40°C, and stir at a speed of 150 r / min;

[0049] Step 2: Add 2.8 g of antioxidant, 4.5 g of anti-wear extreme pressure agent, 3 g of 1,3,5-tris(2-hydroxyethyl)-hexahydro-triazine and 3-iodo-2-propynylbutylcarbamate complex in a mass ratio of 0.6:0.9, 0.1 g of emulsified silicone oil and 3 g of triethanolamine, and mix well;

[0050] The antioxidant is a compound of diphenylamine and monophenol in a mass ratio of 0.8:0.8, and the anti-wear extreme pressure agent is a compound of acidic phosphate and sulfur phosphorus agent in a mass ratio of 2.6:0.08.

[0051] The preparation method of the sulfur-phosphorus agent is as follows: in a reactor equipped with a stirrer and a condensing device, 8g of dialkyl dithiophosphoric acid, 3g of cyanuric chloride, 8g of anhydrous potassium carbonate and 8g of tetrahydrofuran are added, the temperature is raised to 85°C, refluxed for 12h and then purified to obtain the sulfur-phosphorus agent;

[0052] Step 3, preparation of nano copper powder: add 4.5g of ethylene glycol to 5.8g of anhydrous copper sulfate solution, stir until completely dissolved; add 1.5g of polyvinyl pyrrolidone, heat to 35°C, stir at a speed of 150r / min for 35min to obtain solution 1; pour 1.8 and 30% sodium hydroxide by mass into 2.5g of sodium borohydride, adjust its pH to 11, and slowly add it dropwise to solution 1; after all the dropwise addition is completed, react for 30min; wash with distilled water 5 times, soak in distilled water for 50min, then take out and dry, grind and sieve in turn to obtain nano copper powder;

[0053] Step 3: Pour in 1.6 g of nano copper powder and stir evenly to obtain the flame-resistant hydraulic fluid.

[0054] Comparative Example 1

[0055] Compared with Example 1, the antioxidant in Example 1 is replaced by diphenylamine.

[0056] Comparative Example 2

[0057] Compared with Example 1, the anti-wear extreme pressure agent in Example 1 is replaced by phosphate ester.

[0058] Comparative Example 3

[0059] Compared with Example 1, no nano copper powder is added.

[0060] Friction performance test: MMW-1 universal friction and wear testing machine was used to measure the friction coefficient and wear spot diameter parameters according to the requirements of GB / T21449 at 1200r / min, 294N, 30min, and room temperature in accordance with the operating procedures of SH / T0189; the results are shown in Table 1.

[0061] Flame retardant performance test: Flash point (open) is tested according to GB / T3536; Manifold fire test (704°C) is tested according to NB / SH / TO567; the results are shown in Table 1.

[0062] Table 1

[0063]

[0064] Antioxidant performance test: The test was carried out in accordance with GB / T7304, and the oxidation performance was determined by the acid value increase; the results are shown in Table 2.

[0065] Table 2

[0066]

[0067]

[0068] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0069] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0070] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A process for preparing a fire-resistant hydraulic fluid using electric power oil, characterized in that: The specific preparation steps include: Step 1: Add polyether and deionized water to ethylene glycol at a temperature of 25 to 40° C., and stir evenly at a speed of 100 to 150 r / min; Step 2: Add antioxidant, anti-wear extreme pressure agent, antiseptic bactericide, anti-foaming additive and pH stabilizer, and mix well; Step 3: Pour in nano copper powder and stir evenly to obtain flame resistant hydraulic fluid; Among them, the weight proportions of each component added are: 35-55 parts of ethylene glycol, 5-15 parts of polyether, 35-50 parts of deionized water, 1.6-2.8 parts of antioxidant, 3-4.5 parts of anti-wear extreme pressure agent, 1.5-3 parts of preservative and bactericidal agent, 0.04-0.1 parts of anti-foaming additive, 0.5-3 parts of pH stabilizer, and 0.8-1.6 parts of nano copper powder.

2. A process for preparing a fire-resistant hydraulic fluid using electric power oil according to claim 1, characterized in that: The antiseptic and bactericidal agent is a complex of 1,3,5-tris(2-hydroxyethyl)-hexahydro-triazine and 3-iodo-2-propynylbutylcarbamate, and the mass ratio thereof is 0.6:(0.5-0.9); the anti-foaming additive is selected from one or more of emulsified silicone oil and phosphate ester; the pH stabilizer is selected from one or more of monoethanolamine, diethanolamine, triethanolamine, isopropanolamine and diglycolamine.

3. The process for preparing a fire-resistant hydraulic fluid using electric power oil according to claim 1, characterized in that: The preparation method of the nano copper powder is: S1. Add ethylene glycol to the anhydrous copper sulfate solution and stir until completely dissolved; S2, add polyvinyl pyrrolidone, raise the temperature to 30-35°C, and stir at a speed of 120-150 r / min for 25-35 min; S3, pour sodium hydroxide into sodium borohydride, adjust its pH to 10.5-11, and then slowly add it dropwise to the solution of S2; S4, after all the dropwise addition is completed, react for 25 to 30 minutes; S5. After washing with distilled water for 3 to 5 times, soaking in distilled water for 40 to 50 minutes, taking out, drying, grinding and sieving in sequence, nano copper powder is obtained.

4. The process for preparing a fire-resistant hydraulic fluid using electric power oil according to claim 3, characterized in that: The weight proportions of the components added in the nano copper powder are: 4.2-5.8 parts of anhydrous copper sulfate solution, 2.5-4.5 parts of ethylene glycol, 0.8-1.5 parts of polyvinyl pyrrolidone, 1.2-2.5 parts of sodium borohydride, and 0.6-1.8 parts of sodium hydroxide.

5. The process for preparing fire-resistant hydraulic fluid using power oil according to claim 3, characterized in that: In the S3, the mass fraction of sodium hydroxide is 20% to 30%.

6. The process for preparing a fire-resistant hydraulic fluid using electric power oil according to claim 1, characterized in that: The antioxidant is composed of diphenylamine and monophenol, and the mass ratio of diphenylamine to monophenol is 0.8:(0.5-0.8).

7. The process for preparing a fire-resistant hydraulic fluid using electric power oil according to claim 1, characterized in that: The anti-wear extreme pressure agent is composed of a phosphorus-containing agent and a sulfur-phosphorus agent, and the mass ratio of the phosphorus-containing agent to the sulfur-phosphorus agent is 2.6:(0.05-0.08).

8. The process for preparing fire-resistant hydraulic fluid using power oil according to claim 7, characterized in that: The phosphorus-containing agent is selected from any one of phosphate ester, alkyl phosphite and acidic phosphate ester.

9. The process for preparing fire-resistant hydraulic fluid using power oil according to claim 7, characterized in that: The preparation method of the thiophosphorus agent is as follows: in a reactor equipped with a stirrer and a condensing device, 4.5 to 8 parts of dialkyl dithiophosphoric acid, 1.5 to 3 parts of cyanuric chloride, 4.5 to 8 parts of anhydrous potassium carbonate and 4.5 to 8 parts of tetrahydrofuran are added, the temperature is raised to 60 to 85° C., reflux reaction is carried out for 8 to 12 hours, and then purification is carried out to obtain the thiophosphorus agent.

Images