A high-temperature adsorption type lubricant composition for a fan and a preparation method thereof

Abstract

The present invention discloses a high-temperature adsorption type lubricant composition for a fan and a preparation method thereof, relating to the technical field of lubricants. The lubricant composition of the present invention comprises the following raw materials in parts by weight: 60-75 parts of base oil, 3-6 parts of anti-wear agent, 0.1-0.5 part of anti-aging agent, 0.5-5 parts of dispersant, 0.01-1 part of antioxidant, and 0.1-5 parts of active additive. The grease composition prepared in this application has the advantages of high dropping point, low oil separation amount, and small change in micro-cone penetration of the grease after 6 months of storage, and good storage stability.

Description

Technical Field

[0001] The present invention relates to the technical field of lubricants, and particularly relates to a high-temperature adsorption type lubricant composition for a fan and a preparation method thereof. Background Art

[0002] The electric fan motor uses an oil-impregnated bearing. Lubricating oil is added outside the steel sheet retaining ring that presses the bearing outside the bearing. There is usually a ring of wool fabric here for oil absorption and then for use by the bearing. For general lubricating oil, due to the heat generated during the operation of the electric fan bearing, when the temperature rises, the viscosity of the lubricating oil becomes smaller, the adsorption force decreases, and it is easy to cause the loss of the lubricating oil, thereby affecting the lubrication and increasing the noise.

[0003] The composition disclosed in the present invention has developed a high-temperature adsorption type lubricant according to the lubrication requirements of household electric fans, which has good lubricity, a moderate binding force with wool fabric, strong high-temperature adsorption, good slow-release performance, and a long service life. Summary of the Invention

[0004] The purpose of the present invention is to provide a high-temperature adsorption type lubricant composition for a fan and a preparation method thereof, and solve the following technical problems:

[0005] Existing lubricants have a reduced viscosity and adsorption force in a high-temperature environment generated during mechanical operation, which easily leads to the loss of the lubricant.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] A high-temperature adsorption type lubricant composition for a fan, the lubricant composition comprising the following raw materials in weight percentages: 60 - 75 parts of base oil, 3 - 6 parts of anti-wear agent, 0.1 - 0.5 part of anti-aging agent, 0.5 - 5 parts of dispersant, 0.01 - 1 part of antioxidant, 0.1 - 5 parts of active additive.

[0008] As a further solution of the present invention: the base oil is any one of food-grade white oil or polyalphaolefin, and the kinematic viscosity of the food-grade white oil at 40°C is 30 - 70 cst; the kinematic viscosity of the polyalphaolefin at 100°C is 6 - 40 cst.

[0009] As a further solution of the present invention: the anti-wear agent is any one of zinc dialkyldithiophosphate and molybdenum dialkyldithiophosphate.

[0010] As a further solution of the present invention: the anti-aging agent is any one of phenyl B-naphthylamine, butyloctyldiphenylamine, dinonyldiphenylamine, and N-phenyl-a-naphthylamine.

[0011] As a further solution of the present invention: the dispersant is any one of ethanol or acetone.

[0012] As a further aspect of the present invention: the antioxidant is any one of diphenylamine, diisooctyl diphenylamine, and phenyl-α-naphthylamine.

[0013] As a further aspect of the present invention: the preparation method of the active additive comprises the following steps:

[0014] A1: Add dopamine hydrochloride and deionized water into a reaction kettle, adjust the pH to 7-8, add bentonite, disperse evenly, heat up to 80-90 °C, keep warm for 6-9 h, wash and dry to obtain Component 1;

[0015] A2: Add Component 1, potassium bicarbonate, and glycerol into a reactor, disperse evenly, heat up to 160-180 °C, wash and dry to obtain Component 2;

[0016] A3: In a nitrogen atmosphere, add Component 2 and N,N-dimethylpropylenediamine into a reactor, heat up to 130-140 °C, keep warm for 6-9 h, carry out vacuum distillation, wash and dry to obtain Component 3;

[0017] A4: Add Component 3, chloroethanol, deionized water, and isopropanol into a reaction flask, mix evenly, heat up to 70-80 °C, keep warm for 3-6 h, filter, wash and dry to obtain the active additive.

[0018] As a further aspect of the present invention: in A1, the mass ratio of dopamine hydrochloride, deionized water, and bentonite is 5-10:500-2000:100.

[0019] As a further aspect of the present invention: in A2, the mass ratio of Component 1, potassium bicarbonate, and glycerol is 10:2-5:200-400.

[0020] As a further aspect of the present invention: in A3, the mass ratio of Component 2 and N,N-dimethylpropylenediamine is 10:2-5.

[0021] As a further aspect of the present invention: in A4, the mass ratio of Component 3, chloroethanol, deionized water, and isopropanol is 10:3-5:50-100:25-50.

[0022] A preparation method of a high-temperature adsorption type lubricant composition for a fan, comprising the following steps:

[0023] Add the base oil accounting for one-third to one-half of the total base oil into a reaction kettle, heat up to 85-90 °C, add an antioxidant and an active additive, keep warm for 0.3-1 h; add the remaining base oil, control the temperature at 50-60 °C, add an antiwear agent, an antioxidant, and a dispersant, and disperse evenly to obtain the lubricant composition.

[0024] The beneficial effects of the present invention:

[0025] This application uses bentonite as a raw material. First, it is modified and polymerized on the surface using dopamine hydrochloride, and then carboxylated on the surface using potassium bicarbonate to obtain Component Two. The carboxylic acid groups grafted on the surface of Component Two react with N,N-dimethylpropylenediamine to obtain Component Three, and a quaternization reaction is carried out with chloroethanol to obtain an active additive. The additive prepared in this application is added to the lubricant composition, effectively improving the high-temperature resistance of the lubricant and increasing the adsorption performance of the lubricant on the substrate surface. The active additive prepared in this application endows the lubricant with good colloidal stability and mechanical stability. Specific Embodiments

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0027] Example 1

[0028] The preparation method of the active additive includes the following steps:

[0029] A1: Add 5 g of dopamine hydrochloride and 500 mL of deionized water to the reaction kettle, adjust the pH to 7 with 0.1 mol / L sodium hydroxide aqueous solution, add 100 g of bentonite, disperse evenly, heat up to 80 - 90 °C, keep warm for 6 - 9 h, wash and dry to obtain Component One; [[ID=1']]

[0030] A2: Add 50 g of Component One, 10 g of potassium bicarbonate, and 1000 g of glycerol to the reactor, disperse evenly, heat up to 160 °C, wash and dry to obtain Component Two;

[0031] A3: In a nitrogen atmosphere, add 50 g of Component Two and 10 g of N,N-dimethylpropylenediamine to the reactor, heat up to 130 °C, keep warm for 6 h, carry out vacuum distillation, wash and dry to obtain Component Three;

[0032] A4: Add 50 g of Component Three, 15 g of chloroethanol, 250 mL of deionized water, and 125 g of isopropanol to the reaction flask, mix evenly, heat up to 70 °C, keep warm for 3 h, filter, wash and dry to obtain the active additive.

[0033] Example 2

[0034] The preparation method of the active additive includes the following steps:

[0035] A1: Add 8 g of dopamine hydrochloride and 1000 mL of deionized water into a reaction kettle, adjust the pH to 7 with 0.1 mol / L sodium hydroxide aqueous solution, add 100 g of bentonite, disperse evenly, heat up to 85 °C, keep warm for 6 h, wash and dry to obtain Component 1;

[0036] A2: Add 50 g of Component 1, 20 g of potassium bicarbonate and 1500 g of glycerol into a reactor, disperse evenly, heat up to 170 °C, wash and dry to obtain Component 2;

[0037] A3: In a nitrogen atmosphere, add 50 g of Component 2 and 20 g of N,N-dimethylpropylenediamine into a reactor, heat up to 135 °C, keep warm for 6 h, carry out vacuum distillation, wash and dry to obtain Component 3;

[0038] A4: Add 50 g of Component 3, 20 g of chloroethanol, 400 mL of deionized water and 200 g of isopropanol into a reaction flask, mix evenly, heat up to 75 °C, keep warm for 3 h, filter, wash and dry to obtain the active additive.

[0039] Example 3

[0040] The preparation method of the active additive comprises the following steps:

[0041] A1: Add 10 g of dopamine hydrochloride and 2000 mL of deionized water into a reaction kettle, adjust the pH to 8 with 0.1 mol / L sodium hydroxide aqueous solution, add 100 g of bentonite, disperse evenly, heat up to 90 °C, keep warm for 9 h, wash and dry to obtain Component 1;

[0042] A2: Add 50 g of Component 1, 25 g of potassium bicarbonate and 2000 g of glycerol into a reactor, disperse evenly, heat up to 160 - 180 °C, wash and dry to obtain Component 2;

[0043] A3: In a nitrogen atmosphere, add 50 g of Component 2 and 25 g of N,N-dimethylpropylenediamine into a reactor, heat up to 140 °C, keep warm for 9 h, carry out vacuum distillation, wash and dry to obtain Component 3;

[0044] A4: Add 50 g of Component 3, 25 g of chloroethanol, 500 mL of deionized water and 250 g of isopropanol into a reaction flask, mix evenly, heat up to 80 °C, keep warm for 6 h, filter, wash and dry to obtain the active additive.

[0045] Example 4

[0046] The preparation method of a high-temperature adsorption type lubricant composition for a fan comprises the following steps:

[0047] S1: Weigh 60 g of polyalphaolefin, 5 g of zinc dialkyldithiophosphate, 0.5 g of phenyl B-naphthylamine, 1 g of ethanol, 0.5 g of diphenylamine, and 5 g of the active additive prepared in Example 1; the kinematic viscosity of the polyalphaolefin at 100 °C is 35 cst;

[0048] S2: Add 30 g of base oil to the reaction kettle, heat up to 85 °C, add diphenylamine and the active additive, and keep the temperature for 1 h; add 30 g of base oil, control the temperature at 50 °C, add zinc dialkyldithiophosphate, phenyl B-naphthylamine, and ethanol, and disperse evenly to obtain the lubricant composition.

[0049] Example 5

[0050] A preparation method of a high-temperature adsorption type lubricant composition for a fan, comprising the following steps:

[0051] S1: Weigh 60 g of polyalphaolefin, 5 g of zinc dialkyldithiophosphate, 0.5 g of phenyl B-naphthylamine, 1 g of ethanol, 0.5 g of diphenylamine, and 5 g of the active additive prepared in Example 2; the kinematic viscosity of the polyalphaolefin at 100 °C is 35 cst;

[0052] S2: Add 30 g of base oil to the reaction kettle, heat up to 85 °C, add diphenylamine and the active additive, and keep the temperature for 1 h; add 30 g of base oil, control the temperature at 50 °C, add zinc dialkyldithiophosphate, phenyl B-naphthylamine, and ethanol, and disperse evenly to obtain the lubricant composition.

[0053] Example 6

[0054] A preparation method of a high-temperature adsorption type lubricant composition for a fan, comprising the following steps:

[0055] S1: Weigh 60 g of polyalphaolefin, 5 g of zinc dialkyldithiophosphate, 0.5 g of phenyl B-naphthylamine, 1 g of ethanol, 0.5 g of diphenylamine, and 5 g of the active additive prepared in Example 3; the kinematic viscosity of the polyalphaolefin at 100 °C is 35 cst;

[0056] S2: Add 30 g of base oil to the reaction kettle, heat up to 85 °C, add diphenylamine and the active additive, and keep the temperature for 1 h; add 30 g of base oil, control the temperature at 50 °C, add zinc dialkyldithiophosphate, phenyl B-naphthylamine, and ethanol, and disperse evenly to obtain the lubricant composition.

[0057] Comparative Example 1

[0058] The preparation method of the active additive comprises the following steps:

[0059] Add 5 g of dopamine hydrochloride and 500 mL of deionized water to a reaction kettle, adjust the pH to 7 with 0.1 mol / L sodium hydroxide aqueous solution, add 100 g of bentonite, disperse evenly, heat up to 80 - 90 °C, keep warm for 6 - 9 h, wash and dry to obtain the active additive.

[0060] Comparative Example 2

[0061] The preparation method of the active additive comprises the following steps:

[0062] A1: Add 5 g of dopamine hydrochloride and 500 mL of deionized water to a reaction kettle, adjust the pH to 7 with 0.1 mol / L sodium hydroxide aqueous solution, add 100 g of bentonite, disperse evenly, heat up to 80 - 90 °C, keep warm for 6 - 9 h, wash and dry to obtain Component 1;

[0063] A2: Add 50 g of Component 1, 10 g of potassium bicarbonate, and 1000 g of glycerol to a reactor, disperse evenly, heat up to 160 °C, wash and dry to obtain the active additive.

[0064] Comparative Example 3

[0065] The preparation method of the active additive comprises the following steps:

[0066] A1: Add 5 g of dopamine hydrochloride and 500 mL of deionized water to a reaction kettle, adjust the pH to 7 with 0.1 mol / L sodium hydroxide aqueous solution, add 100 g of bentonite, disperse evenly, heat up to 80 - 90 °C, keep warm for 6 - 9 h, wash and dry to obtain Component 1;

[0067] A2: Add 50 g of Component 1, 10 g of potassium bicarbonate, and 1000 g of glycerol to a reactor, disperse evenly, heat up to 160 °C, wash and dry to obtain Component 2;

[0068] A3: In a nitrogen atmosphere, add 50 g of Component 2 and 10 g of N,N - dimethylpropylenediamine to a reactor, heat up to 130 °C, keep warm for 6 h, carry out vacuum distillation, wash and dry to obtain the active additive.

[0069] Comparative Example 4

[0070] Compared with Example 4, in this comparative example, only the active additive added in Example 4 is replaced with the active additive prepared in Comparative Example 1 in equal amount, and the other components and preparation methods are exactly the same as those in Example 4.

[0071] Comparative Example 5

[0072] Compared with Example 4, in this comparative example, only the active additive added in Example 4 is replaced with the active additive prepared in Comparative Example 2 in equal amount, and the other components and preparation methods are exactly the same as those in Example 4.

[0073] Comparative Example 6

[0074] Compared with Example 4, in this comparative example, only the active additive added in Example 4 was replaced with the active additive prepared in Comparative Example 3 in equal amounts, and the other components and preparation methods were exactly the same as those in Example 4.

[0075] Comparative Example 7

[0076] Compared with Example 4, in this comparative example, only the active additive added in Example 4 was replaced with bentonite in equal amounts, and the other components and preparation methods were exactly the same as those in Example 4.

[0077] Performance Detection

[0078] (1) Dropping point: Tested according to GB / T3498-1991, and the test data are shown in Table 1. This index can predict the service life of the lubricant in a high-temperature environment;

[0079] (2) Penetration: Tested according to GB / T269-1991, and the test data are shown in Table 1. This index can evaluate the hardness and softness of the lubricant;

[0080] (3) Steel wire mesh oil separation: Tested according to SH / T03241992, and the test data are shown in Table 1. This index can qualitatively evaluate the oil separation tendency of the lubricant at the use temperature.

[0081] Table 1: Statistical table of performance detection data of Examples 4-6 and Comparative Examples 4-7

[0082]

[0083]

[0084] As can be seen from Table 1, the grease composition prepared in this application has the advantages of high dropping point, low oil separation amount, and small change in micro-penetration of the grease after 6 months of storage, and good storage stability.

[0085] The above has described in detail an embodiment of the present invention, but the content described is only a preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the present invention application should still fall within the scope covered by the patent of the present invention.

Claims

1. A high-temperature adsorption type lubricant composition for a fan, characterized in that, The lubricant composition comprises raw materials in the following parts by weight: 60 - 75 parts of base oil, 3 - 6 parts of anti-wear agent, 0.1 - 0.5 part of anti-aging agent, 0.5 - 5 parts of dispersant, 0.01 - 1 part of antioxidant, and 0.1 - 5 parts of active additive; The preparation method of the active additive comprises the following steps: A1: Add dopamine hydrochloride and deionized water into a reaction kettle, adjust the pH to 7 - 8, add bentonite, disperse evenly, heat up to 80 - 90 °C, keep warm for 6 - 9 h, wash and dry to obtain Component One; A2: Add Component One, potassium bicarbonate, and glycerol into a reactor, disperse evenly, heat up to 160 - 180 °C, wash and dry to obtain Component Two; A3: In a nitrogen atmosphere, add Component Two and N,N-dimethylpropylenediamine into a reactor, heat up to 130 - 140 °C, keep warm for 6 - 9 h, carry out vacuum distillation, wash and dry to obtain Component Three; A4: Add Component Three, chloroethanol, deionized water, and isopropanol into a reaction flask, mix evenly, heat up to 70 - 80 °C, keep warm for 3 - 6 h, filter, wash and dry to obtain the active additive.

2. The high-temperature adsorption type lubricant composition for a fan according to claim 1, characterized in that The base oil is any one of food-grade white oil or polyalphaolefin. The kinematic viscosity of the food-grade white oil at 40 °C is 30 - 70 cst; the kinematic viscosity of the polyalphaolefin at 100 °C is 6 - 40 cst.

3. The high-temperature adsorption type lubricant composition for a fan according to claim 1, characterized in that In A1, the mass ratio of dopamine hydrochloride, deionized water, and bentonite is 5 - 10:500 - 2000:

100.

4. The high-temperature adsorption type lubricant composition for a fan according to claim 1, characterized in that, In A2, the mass ratio of Component One, potassium bicarbonate, and glycerol is 10:2 - 5:200 - 400.

5. The high-temperature adsorption type lubricant composition for a fan according to claim 1, wherein In A3, the mass ratio of Component Two and N,N-dimethylpropylenediamine is 10:2 - 5.

6. The high-temperature adsorption type lubricant composition for a fan according to claim 1, wherein In A4, the mass ratio of Component Three, chloroethanol, deionized water, and isopropanol is 10:3 - 5:50 - 100:25 - 50.

7. A method for preparing a high-temperature adsorption type lubricant composition for a fan according to any one of claims 1-6, characterized in that, Comprises the following steps: Add one-third to one-half of the total amount of the base oil into a reaction kettle, heat up to 85 - 90 °C, add the antioxidant and the active additive, keep warm for 0.3 - 1 h; add the remaining base oil, control the temperature at 50 - 60 °C, add the anti-wear agent, anti-aging agent, and dispersant, disperse evenly to obtain the lubricant composition.

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