CN110607197A - Antirust lubricating oil - Google Patents
Antirust lubricating oil Download PDFInfo
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- CN110607197A CN110607197A CN201910783612.5A CN201910783612A CN110607197A CN 110607197 A CN110607197 A CN 110607197A CN 201910783612 A CN201910783612 A CN 201910783612A CN 110607197 A CN110607197 A CN 110607197A
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/18—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof
- C01B33/187—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by acidic treatment of silicates
- C01B33/193—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by acidic treatment of silicates of aqueous solutions of silicates
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M125/00—Lubricating compositions characterised by the additive being an inorganic material
- C10M125/26—Compounds containing silicon or boron, e.g. silica, sand
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
- C10M169/045—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution and non-macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/085—Phosphorus oxides, acids or salts
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/10—Compounds containing silicon
- C10M2201/105—Silica
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/02—Hydroxy compounds
- C10M2207/021—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/022—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms containing at least two hydroxy groups
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/121—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms
- C10M2207/124—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms containing hydroxy groups; Ethers thereof
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
- C10M2219/044—Sulfonic acids, Derivatives thereof, e.g. neutral salts
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Lubricants (AREA)
Abstract
The invention discloses antirust lubricating oil which comprises 52-56 parts of base oil, 7-8 parts of sulfonic acid, 5-13 parts of trimethylolpropane, 3.5-4.5 parts of potassium hydrogen phosphate, 5-7 parts of ammonium dodecylbenzene sulfonate, 6.5-7.5 parts of sodium citrate, 0.1-0.3 part of viscosity regulator and 5-9 parts of amorphous silicon dioxide antirust filler. The invention adds amorphous silicon dioxide antirust filler into lubricating oil. The added amorphous silica antirust filler has good affinity, can be well fused with other components of lubricating oil, and is uniformly dispersed in the lubricating oil, so that a stable and compact antirust protective film is formed. The lubricating oil is uniformly coated on a metal product, so that a compact and stable protective layer is formed on the surface of the metal product, and the corrosion of the metal product body due to the exposure of the metal product body in the air is prevented.
Description
Technical Field
The invention relates to lubricating oil, in particular to antirust lubricating oil.
Background
The lubricating oil is a liquid or semisolid lubricating agent used on various types of automobiles and mechanical equipment to reduce friction and protect machines and workpieces, and mainly plays roles in lubrication, cooling, rust prevention, cleaning, sealing, buffering and the like. The existing lubricating oil generally forms an oil film on the surface of a machine part, so that the oil film is prevented from being directly contacted with water and acid gas, and the aim of rust prevention is fulfilled. Along with the increasing awareness of energy conservation, environmental protection, low cost and the like, metal rust prevention is more and more important, and further, the requirement of people on the rust prevention performance of lubricating oil is higher and higher.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention has the following objects: the anti-rust lubricating oil has good anti-rust performance and can effectively prevent metal products from rusting.
The purpose of the invention is realized by adopting the following technical scheme:
an antirust lubricating oil comprises 52-56 parts of base oil, 7-8 parts of sulfonic acid, 5-13 parts of trimethylolpropane, 3.5-4.5 parts of potassium hydrogen phosphate, 5-7 parts of ammonium dodecylbenzene sulfonate, 6.5-7.5 parts of sodium citrate, 0.1-0.3 part of viscosity regulator and 5-9 parts of amorphous silica antirust filler.
Further, 54 parts of base oil, 7.5 parts of sulfonic acid, 9 parts of trimethylolpropane, 4 parts of potassium hydrogenphosphate, 6 parts of ammonium dodecylbenzenesulfonate, 7 parts of sodium citrate, 0.2 part of viscosity modifier and 8 parts of amorphous silica rust-inhibiting filler were included.
Further, the preparation method of the amorphous silica antirust filler comprises the following steps:
1) preparing materials: preparing a water glass solution with the silicon dioxide content of 5-25 wt%, and preparing a sulfuric acid solution with the concentration of 10-50 wt%;
2) synthesizing: adding a sulfuric acid solution into the reaction kettle, and adding a water glass solution to adjust the pH value of the system to 1-4; standing for 30-120 minutes after uniform stirring, wherein the reaction temperature is 30-60 ℃; after standing, adjusting the pH value of the mixed solution to 6-8, simultaneously heating to 70-100 ℃, and keeping for 10-120 minutes;
3) adjusting the pH value of the system to 2-4, and keeping for 20 minutes;
4) filtering and washing the reaction product, adding alcohol amine or micromolecular alcohol after filtering and washing, and then carrying out spray drying and crushing.
Further, the preparation method of the amorphous silica antirust filler comprises the following steps:
1) preparing materials: preparing a water glass solution with the silicon dioxide content of 20 wt%, and preparing a sulfuric acid solution with the concentration of 30 wt%;
2) synthesizing: adding a sulfuric acid solution into the reaction kettle, and then adding a water glass solution to adjust the pH value of the system to 1.5; the time for adding the water glass solution is 30 minutes; standing for 90 minutes after uniform stirring, wherein the reaction temperature is 50 ℃; after standing, adjusting the pH value of the mixed solution to 8, simultaneously heating to 90 ℃, and keeping for 30 minutes;
3) adjusting the pH value of the system to 3.5, and keeping for 20 minutes;
4) filtering and washing the reaction product, adding alcohol amine or micromolecular alcohol after filtering and washing, and then carrying out spray drying and crushing.
Further, in step 4), the reaction product is filtered and washed to a conductivity of < 50. mu.S/cm.
Further, the outlet temperature of spray drying is 110-150 ℃, and the amorphous silicon dioxide antirust filler is crushed to 2-4 mu m.
Further, comprising: in the step 4), filtering and washing, and then adding alcohol amine; wherein, the alcohol amine is one or two of ethanolamine or 6-amino-1-hexanol.
Further, in the step 4), the weight ratio of the silicon dioxide to the alcohol amine is 100: (1-5).
Further, in the step 4), small molecular alcohol is added after filtration and washing; wherein the small molecular alcohol is one or more than two of small molecular polyols.
Further, in the step 4), the weight ratio of the silicon dioxide to the small molecular alcohol is 100: (1-5).
Compared with the prior art, the invention has the beneficial effects that:
the invention adds amorphous silicon dioxide antirust filler into lubricating oil. The added amorphous silica antirust filler has good affinity, can be well fused with other components of lubricating oil, and is uniformly dispersed in the lubricating oil, so that a stable and compact antirust protective film is formed. The lubricating oil is uniformly coated on a metal product, so that a compact and stable protective layer is formed on the surface of the metal product, and the corrosion of the metal product body due to the exposure of the metal product body in the air is prevented.
Detailed Description
The present invention is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment. The materials used in this example are all commercially available.
Comparative example 1:
an antirust lubricating oil comprises 54 parts of base oil, 7.5 parts of sulfonic acid, 9 parts of trimethylolpropane, 4 parts of potassium hydrogen phosphate, 6 parts of ammonium dodecylbenzene sulfonate, 7 parts of sodium citrate, 0.2 part of viscosity regulator and 8 parts of amorphous silica antirust filler.
Among them, the amorphous silica rust inhibitive filler of comparative example 1 was prepared by the following method:
5000 grams of 10 weight percent sulfuric acid solution is added into the reaction kettle, and then 25 weight percent water glass solution is added to adjust the pH value of the system to 1.5; the time for adding the water glass solution is 120 minutes; standing for 30 minutes after uniform stirring, wherein the reaction temperature is 30 ℃; after standing, adjusting the pH value of the mixed solution to 6 by using a 10% sodium hydroxide solution, simultaneously heating to 100 ℃, and keeping the temperature for 120 minutes; adjusting the pH value of the system to 2 by using a 10% sulfuric acid solution, and keeping the pH value for 20 minutes; the reaction product is filtered and washed until the conductivity is less than 50 mu S/cm, the temperature of a spray drying outlet is 150 ℃, and the reaction product is crushed to 2 mu m.
The physicochemical properties are shown in table 1:
TABLE 1
| Index of serial number | Oil absorption value g/g | Pore volume ml/g | Square meter with specific surface area per gram |
| Comparative examples 1 to 1 | 1.12 | 1.28 | 482 |
| Comparative examples 1 to 2 | 1.09 | 1.27 | 468 |
| Comparative examples 1 to 3 | 1.14 | 1.26 | 487 |
| Comparative examples 1 to 4 | 1.07 | 1.19 | 466 |
| Comparative examples 1 to 5 | 1.15 | 1.30 | 458 |
Example 1:
an antirust lubricating oil comprises 54 parts of base oil, 7.5 parts of sulfonic acid, 9 parts of trimethylolpropane, 4 parts of potassium hydrogen phosphate, 6 parts of ammonium dodecylbenzene sulfonate, 7 parts of sodium citrate, 0.2 part of viscosity regulator and 8 parts of amorphous silica antirust filler.
Among them, the amorphous silica rust inhibitive filler in example 1 was prepared by the following method:
5000 grams of 30 weight percent sulfuric acid solution is added into the reaction kettle, and then 20 weight percent water glass solution is added to adjust the pH value of the system to 1.5; the time for adding the water glass solution is 30 minutes; standing for 90 minutes after uniform stirring, wherein the reaction temperature is 50 ℃; after standing, adjusting the pH value of the mixed solution to 8 by using a 10% sodium hydroxide solution, simultaneously heating to 90 ℃, and keeping for 30 minutes; adjusting the pH value of the system to 3.5 by using a 10% sulfuric acid solution, and keeping the pH value for 20 minutes; the reaction product was filtered and washed to a conductivity of < 50. mu.S/cm, 6-amino-1-hexanol was added to a silica content of 3% by weight before spray-drying, the spray-drying exit temperature was 110 ℃ and the reaction product was pulverized to 3 μm. The physicochemical properties are shown in Table 2:
TABLE 2
| Index of serial number | Oil absorption value g/g | Pore volume ml/g | Square meter with specific surface area per gram |
| Examples 1 to 1 | 0.73 | 0.71 | 687 |
| Examples 1 to 2 | 0.65 | 0.74 | 681 |
| Examples 1 to 3 | 0.72 | 0.72 | 679 |
| Examples 1 to 4 | 0.68 | 0.69 | 684 |
| Examples 1 to 5 | 0.69 | 0.75 | 678 |
Example 2:
an antirust lubricating oil comprises 54 parts of base oil, 7.5 parts of sulfonic acid, 9 parts of trimethylolpropane, 4 parts of potassium hydrogen phosphate, 6 parts of ammonium dodecylbenzene sulfonate, 7 parts of sodium citrate, 0.2 part of viscosity regulator and 8 parts of amorphous silica antirust filler.
Among them, the amorphous silica rust inhibitive filler in example 2 was prepared by the following method:
5000 grams of 30 weight percent sulfuric acid solution is added into the reaction kettle, and then 20 weight percent water glass solution is added to adjust the pH value of the system to 1.5; the time for adding the water glass solution is 60 minutes; standing for 90 minutes after uniform stirring, wherein the reaction temperature is 50 ℃; after standing, adjusting the pH value of the mixed solution to 8 by using a 10% sodium hydroxide solution, simultaneously heating to 90 ℃, and keeping for 30 minutes; adjusting the pH value of the system to 3.5 by using a 10% sulfuric acid solution, and keeping the pH value for 20 minutes; filtering and washing the reaction product until the conductivity is less than 50 mu S/cm, adding ethanolamine with the weight ratio of 3 percent of silicon dioxide before spray drying, and crushing the mixture to 3 mu m at the outlet temperature of the spray drying of 110 ℃. The physicochemical properties are shown in Table 3:
TABLE 3
| Index of serial number | Oil absorption value g/g | Pore volume ml/g | Square meter with specific surface area per gram |
| Example 2-1 | 0.81 | 0.82 | 673 |
| Examples 2 to 2 | 0.82 | 0.81 | 669 |
| Examples 2 to 3 | 0.81 | 0.79 | 678 |
| Examples 2 to 4 | 0.88 | 0.85 | 680 |
| Examples 2 to 5 | 0.83 | 0.82 | 682 |
Example 3:
an antirust lubricating oil comprises 54 parts of base oil, 7.5 parts of sulfonic acid, 9 parts of trimethylolpropane, 4 parts of potassium hydrogen phosphate, 6 parts of ammonium dodecylbenzene sulfonate, 7 parts of sodium citrate, 0.2 part of viscosity regulator and 8 parts of amorphous silica antirust filler.
Among them, the amorphous silica rust inhibitive filler in example 3 was prepared by the following method:
5000 grams of 30 weight percent sulfuric acid solution is added into the reaction kettle, and then 20 weight percent water glass solution is added to adjust the pH value of the system to 1.5; the time for adding the water glass solution is 30 minutes; standing for 90 minutes after uniform stirring, wherein the reaction temperature is 50 ℃; after standing, adjusting the pH value of the mixed solution to 8 by using a 10% sodium hydroxide solution, simultaneously heating to 90 ℃, and keeping for 30 minutes; adjusting the pH value of the system to 3.5 by using a 10% sulfuric acid solution, and keeping the pH value for 20 minutes; filtering and washing the reaction product until the conductivity is less than 50 mu S/cm, adding 1, 6-hexanediol with the weight ratio of silicon dioxide of 3 percent before spray drying, and crushing the mixture to 3 mu m at the outlet temperature of the spray drying of 110 ℃. The physicochemical properties are shown in table 4:
TABLE 4
| Index of serial number | Oil absorption value g/g | Pore volume ml/g | Square meter with specific surface area per gram |
| Example 3-1 | 0.83 | 0.81 | 652 |
| Examples 3 to 2 | 0.80 | 0.84 | 659 |
| Examples 3 to 3 | 0.79 | 0.82 | 655 |
| Examples 3 to 4 | 0.88 | 0.89 | 663 |
| Examples 3 to 5 | 0.85 | 0.85 | 658 |
Example 4:
an antirust lubricating oil comprises 54 parts of base oil, 7.5 parts of sulfonic acid, 9 parts of trimethylolpropane, 4 parts of potassium hydrogen phosphate, 6 parts of ammonium dodecylbenzene sulfonate, 7 parts of sodium citrate, 0.2 part of viscosity regulator and 8 parts of amorphous silica antirust filler.
Among them, the amorphous silica rust inhibitive filler in example 4 was prepared by the following method:
a preparation method of an amorphous silica antirust filler comprises the following steps:
5000 grams of 30 weight percent sulfuric acid solution is added into the reaction kettle, and then 20 weight percent water glass solution is added to adjust the pH value of the system to 1.5; the time for adding the water glass solution is 60 minutes; standing for 90 minutes after uniform stirring, wherein the reaction temperature is 50 ℃; after standing, adjusting the pH value of the mixed solution to 8 by using a 10% sodium hydroxide solution, simultaneously heating to 90 ℃, and keeping for 30 minutes; adjusting the pH value of the system to 3.5 by using a 10% sulfuric acid solution, and keeping the pH value for 20 minutes; filtering and washing the reaction product until the conductivity is less than 50 mu S/cm, adding pentaerythritol with the weight ratio of 3 percent of silicon dioxide before spray drying, and crushing the mixture to 3 mu m at the outlet temperature of 110 ℃ of the spray drying. The physicochemical properties are shown in table 5:
TABLE 5
Example 5:
an antirust lubricating oil comprises 54 parts of base oil, 7.5 parts of sulfonic acid, 9 parts of trimethylolpropane, 4 parts of potassium hydrogen phosphate, 6 parts of ammonium dodecylbenzene sulfonate, 7 parts of sodium citrate, 0.2 part of viscosity regulator and 8 parts of amorphous silica antirust filler.
Among them, the amorphous silica rust inhibitive filler in example 5 was prepared by the following method:
5000 grams of 10 weight percent sulfuric acid solution is added into a reaction kettle, and then 20 weight percent water glass solution is added to adjust the pH value of the system to be 1; the time for adding the water glass solution is 60 minutes; standing for 90 minutes after uniform stirring, wherein the reaction temperature is 40 ℃; after standing, adjusting the pH value of the mixed solution to 8 by using a 10% sodium hydroxide solution, simultaneously heating to 90 ℃, and keeping for 60 minutes; adjusting the pH value of the system to 3 by using a 10% sulfuric acid solution, and keeping the pH value for 20 minutes; filtering and washing the reaction product until the conductivity is less than 50 mu S/cm, adding glycerol with the weight ratio of silicon dioxide of 3 percent before spray drying, and crushing the mixture to 3 mu m at the outlet temperature of the spray drying of 110 ℃. The physicochemical properties are shown in table 6:
TABLE 6
| Index of serial number | Oil absorption value g/g | Pore volume ml/g | Square meter with specific surface area per gram |
| Example 5-1 | 0.70 | 0.81 | 721 |
| Examples 5 and 2 | 0.68 | 0.76 | 713 |
| Examples 5 to 3 | 0.63 | 0.78 | 730 |
| Examples 5 to 4 | 0.60 | 0.75 | 722 |
| Examples 5 to 5 | 0.73 | 0.71 | 740 |
Comparative example 2:
an antirust lubricating oil comprises 54 parts of base oil, 7.5 parts of sulfonic acid, 9 parts of trimethylolpropane, 4 parts of potassium hydrogen phosphate, 6 parts of ammonium dodecylbenzene sulfonate, 7 parts of sodium citrate, 0.2 part of viscosity regulator and 8 parts of zinc tripolyphosphate (115).
Comparative example 3:
an antirust lubricating oil comprises 54 parts of base oil, 7.5 parts of sulfonic acid, 9 parts of trimethylolpropane, 4 parts of potassium hydrogen phosphate, 6 parts of ammonium dodecylbenzene sulfonate, 7 parts of sodium citrate, 0.2 part of viscosity regulator and 8 parts of modified calcium phosphomolybdate (467 s).
Performance testing and Effect evaluation
The performance of the rust inhibitive lubricating oils obtained in examples 1 to 5 and those obtained in comparative examples 1 to 3 were examined as shown in Table 7 below:
TABLE 7 antirust lubricant performance test recording table
The BRT ball corrosion test specifically operates as follows: in the whole 18-hour bench test process, the metal ball protected by the lubricating oil is continuously contacted with the acidic liquid and the air, and after the test is finished, the intensity of the reflecting surface of the metal ball is measured to obtain a gray test value for determining the corrosion area, so that the anti-corrosion capability of the lubricating oil is evaluated. The injection speed of the acetic acid/hydrobromic acid/hydrochloric acid/deionized water solution is 0.19ml/h, the air flow is 40ml/min, and the oil temperature is 48 ℃.
As can be seen from table 7, the rust-preventive lubricating oil containing the amorphous silica rust-preventive filler prepared in examples 1 to 5 of the present invention has a better viscosity than the amorphous silica to which the alcohol amine or the small-molecular polyol is not added, and can form a stable and dense rust-preventive protective film on a metal product, thereby improving the rust-preventive ability of the lubricating oil. The rust inhibitive lubricating oils containing amorphous silica rust inhibitive fillers prepared in examples 1 to 5 of the present invention also had significantly better rust inhibitive ability than the zinc phosphate type rust inhibitive fillers, compared with comparative example 2 and comparative example 3.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (10)
1. An antirust lubricating oil, which is characterized in that: comprises 52 to 56 parts of base oil, 7 to 8 parts of sulfonic acid, 5 to 13 parts of trimethylolpropane, 3.5 to 4.5 parts of potassium hydrogen phosphate, 5 to 7 parts of ammonium dodecylbenzene sulfonate, 6.5 to 7.5 parts of sodium citrate, 0.1 to 0.3 part of viscosity regulator and 5 to 9 parts of amorphous silicon dioxide antirust filler.
2. The rust inhibitive lubricating oil according to claim 1, characterized in that: the antirust filler comprises 54 parts of base oil, 7.5 parts of sulfonic acid, 9 parts of trimethylolpropane, 4 parts of potassium hydrogen phosphate, 6 parts of ammonium dodecylbenzene sulfonate, 7 parts of sodium citrate, 0.2 part of viscosity regulator and 8 parts of amorphous silicon dioxide antirust filler.
3. The rust inhibitive lubricating oil according to claim 1, characterized in that: the preparation method of the amorphous silica antirust filler comprises the following steps:
1) preparing materials: preparing a water glass solution with the silicon dioxide content of 5-25 wt%, and preparing a sulfuric acid solution with the concentration of 10-50 wt%;
2) synthesizing: adding a sulfuric acid solution into the reaction kettle, and adding a water glass solution to adjust the pH value of the system to 1-4; standing for 30-120 minutes after uniform stirring, wherein the reaction temperature is 30-60 ℃; after standing, adjusting the pH value of the mixed solution to 6-8, simultaneously heating to 70-100 ℃, and keeping for 10-120 minutes;
3) adjusting the pH value of the system to 2-4, and keeping for 20 minutes;
4) filtering and washing the reaction product, adding alcohol amine or micromolecular alcohol after filtering and washing, and then carrying out spray drying and crushing.
4. The rust inhibitive lubricating oil according to claim 3, characterized in that: the preparation method of the amorphous silica antirust filler comprises the following steps:
1) preparing materials: preparing a water glass solution with the silicon dioxide content of 20 wt%, and preparing a sulfuric acid solution with the concentration of 30 wt%;
2) synthesizing: adding a sulfuric acid solution into the reaction kettle, and then adding a water glass solution to adjust the pH value of the system to 1.5; the time for adding the water glass solution is 30 minutes; standing for 90 minutes after uniform stirring, wherein the reaction temperature is 50 ℃; after standing, adjusting the pH value of the mixed solution to 8, simultaneously heating to 90 ℃, and keeping for 30 minutes;
3) adjusting the pH value of the system to 3.5, and keeping for 20 minutes;
4) filtering and washing the reaction product, adding alcohol amine or micromolecular alcohol after filtering and washing, and then carrying out spray drying and crushing.
5. The rust inhibitive lubricating oil according to claim 3, characterized in that: in the step 4), the reaction product is filtered and washed until the conductivity is less than 50 mu S/cm.
6. The rust inhibitive lubricating oil according to claim 3, characterized in that: and the outlet temperature of spray drying is 110-150 ℃, and the amorphous silicon dioxide antirust filler is crushed to 2-4 mu m.
7. The rust inhibitive lubricating oil according to claim 3, characterized in that: the method comprises the following steps: in the step 4), filtering and washing, and then adding alcohol amine; wherein, the alcohol amine is one or two of ethanolamine or 6-amino-1-hexanol.
8. The rust inhibitive lubricating oil according to claim 7, characterized in that: in the step 4), the weight ratio of the silicon dioxide to the alcohol amine is 100: (1-5).
9. The rust inhibitive lubricating oil according to claim 3, characterized in that: in the step 4), adding small molecular alcohol after filtering and washing; wherein the small molecular alcohol is one or more than two of small molecular polyols.
10. The rust inhibitive lubricating oil according to claim 9, characterized in that: in the step 4), the weight ratio of the silicon dioxide to the small molecular alcohol is 100: (1-5).
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| CN109735153A (en) * | 2019-01-08 | 2019-05-10 | 广州凌玮科技股份有限公司 | A kind of preparation method of calcium ion-exchanged silica rust resisting pigment |
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Application publication date: 20191224 |