CN111004667A - Novel high-temperature-resistant hydrocarbon lubricating grease and preparation method thereof - Google Patents
Novel high-temperature-resistant hydrocarbon lubricating grease and preparation method thereof Download PDFInfo
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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
- C10M169/048—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution, non-macromolecular and macromolecular compounds
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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
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/10—Petroleum or coal fractions, e.g. tars, solvents, bitumen
- C10M2203/106—Naphthenic fractions
- C10M2203/1065—Naphthenic fractions used as base material
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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
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/024—Propene
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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
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/18—Natural waxes, e.g. ceresin, ozocerite, bees wax, carnauba; Degras
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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
- C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
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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
- C10M2207/10—Carboxylix acids; Neutral salts 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
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
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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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Abstract
The invention discloses novel high-temperature-resistant hydrocarbon lubricating grease and a preparation method thereof, and belongs to the technical field of lubricating grease production. The lubricating grease comprises the following components in percentage by mass: 40-60% of base oil, 30-45% of microcrystalline wax, 1-5% of high molecular weight crystalline polypropylene, 3-7% of antirust agent and 0.2-1% of antioxidant. The preparation process comprises the following steps: firstly, dissolving high molecular weight crystalline polypropylene in low viscosity base oil in advance to prepare high molecular weight crystalline polypropylene glue solution; and dissolving the obtained glue solution with base oil, adding microcrystalline wax, and finally adding all additives to obtain the lubricating grease. By adopting the technical scheme of the invention, the dropping point of the hydrocarbon-based lubricating grease can be effectively improved, so that the use requirement of the hydrocarbon-based lubricating grease at high temperature can be effectively met, and the obtained hydrocarbon-based lubricating grease has excellent damp-heat resistance, antirust performance, colloid stability and oxidation stability.
Description
Technical Field
The invention belongs to the technical field of lubricating grease production, and particularly relates to novel high-temperature-resistant hydrocarbon lubricating grease and a preparation method thereof.
Background
The hydrocarbon grease is a paste grease which is prepared by dispersing paraffin wax or microcrystalline wax (ceresin) and cerate in base oil as thickening agents, is insoluble in water, does not generate emulsification when meeting water, and has good plasticity and good colloid stability. Wherein, the paraffin consists of n-alkane with 19-35 carbon atoms, the molecular weight is 300-500, the paraffin has larger flaky crystals, and the paraffin is easy to break or even crush after being subjected to high brittleness and stress; the microcrystalline wax has higher carbon number, contains cycloparaffin as main component, has fine white or yellow needle crystal structure, and has small hardness, high flexibility, easy deformation and less cracking. Therefore, most of the prior hydrocarbon-based greases are homogeneous structural systems obtained by using microcrystalline wax or a mixture thereof as a main thickener, and are in the form of ointment. In order to further improve certain properties of hydrocarbon-based greases, additives are also commonly added thereto, for example, petroleum sulfonates are added to significantly improve wet heat and rust resistance of the oil film; the addition of oxidized petroleum soap can improve the adhesion and rust resistance of the oil film, thereby obtaining the grease with better performance.
The hydrocarbon grease is mainly used for the rust prevention treatment of metal surfaces, and is prepared by only adding paraffin wax into base oil at first, but the high-temperature stability is relatively poor, and the dropping point is generally not more than 60 ℃. Later on, quench production and the use of microcrystalline wax to thicken base oils were developed, with drop points above 70 ℃. In order to further increase the dropping point, researchers have found that the dropping point of the hydrocarbon-based grease can be increased by adding a high molecular weight polymer, for example, by adding low molecular weight atactic polypropylene thereto, the dropping point can be increased to more than 80 ℃, but the high temperature stability improvement effect on the grease still needs to be further improved. Meanwhile, the existing low molecular weight atactic polypropylene is a byproduct generated by producing isotactic polypropylene by a traditional process, and has the problems of insufficient raw material sources, large addition amount and high cost.
For example, chinese patent application No.: 201510207027.2, filing date: in 2015, 28 days 04 and 28, the invention is named as: a hydrocarbon grease and a preparation method thereof. The hydrocarbon grease of the application consists of the following components in parts by weight: 56-80% of base oil, 6-13% of microcrystalline wax, 6-12% of thickening agent, 0.2-0.5% of p-dioctyl diphenylamine and 1-5% of barium petroleum sulfonate, wherein the base oil has a kinematic viscosity of 120-350 mm at 40 DEG C2The mineral oil is characterized in that the thickening agent is atactic polypropylene or amorphous poly α olefin, and the melting point of the microcrystalline wax is 70-85 ℃.
As another example, chinese patent application No.: 201210581258.6, filing date: 12/28/2012, the name of invention creation is: the hydrocarbon grease for protecting the surface of a steel wire rope comprises the following components in percentage by weight: base oil: 52.0-78.0%; microcrystalline wax: 10.0-35.0%; thickening agent: 8.0-30.0%; alkyl diphenylamine: 0.25-0.6%; barium petroleum sulfonate: 1.5-3.0%; lanolin calcium soap: 1.5-3.0%; the sum of the weight percentages is 100 percent; the base oil is base oil with the kinematic viscosity of 10.0-40.0 mm2/s at 100 ℃, and the thickening agent is APP or APAO; the drop melting point of the microcrystalline wax is 65-85 ℃.
In both of the above applications, the high temperature stability of the conventional hydrocarbon-based grease can be improved to some extent by adding a certain amount of low molecular weight atactic polypropylene, but in order to better satisfy the use requirements of the grease under high temperature conditions, the high temperature stability of the grease needs to be further improved.
Disclosure of Invention
1. Problems to be solved
The invention aims to overcome the defects that the existing hydrocarbon-based lubricating grease is generally low in dropping point and difficult to meet the use requirement at high temperature, so that the use range of the hydrocarbon-based lubricating grease is limited, and provides novel high-temperature-resistant hydrocarbon-based lubricating grease and a preparation method thereof. The technical scheme of the invention can effectively solve the problems, and the hydrocarbon-based lubricating grease has excellent damp-heat resistance, antirust performance, colloid stability and oxidation stability.
2. Technical scheme
In order to solve the problems, the technical scheme adopted by the invention is as follows:
the invention relates to novel high-temperature-resistant hydrocarbon lubricating grease which comprises the following components in percentage by mass:
further, the base oil is a high-viscosity naphthenic base oil having a kinematic viscosity of 400-600mm at 40 ℃2/s。
Further, the melting point of the microcrystalline wax is 60-80 ℃.
Further, the high molecular weight crystalline polypropylene has a molecular weight of 10 to 20 ten thousand.
Further, the rust inhibitor employs any one of barium petroleum sulfonate, calcium lanolin soap, calcium sulfonate and carboxylate.
Furthermore, the antioxidant adopts sterically hindered phenol or organic amine.
The preparation method of the hydrocarbon grease comprises the following specific processes: firstly, dissolving high molecular weight crystalline polypropylene in low viscosity base oil in advance to prepare high molecular weight crystalline polypropylene glue solution; and dissolving the obtained glue solution with base oil, adding microcrystalline wax, and finally adding all additives to obtain the lubricating grease.
Furthermore, when preparing the high molecular weight crystalline polypropylene glue solution, adding the high molecular weight crystalline polypropylene into the low viscosity base oil at the temperature of 150-.
Furthermore, the addition mass percentage of the high molecular weight crystalline polypropylene and the low viscosity base oil is 5-15 percent and 85-95 percent respectively, and the kinematic viscosity of the low viscosity base oil at 40 ℃ is 20-40mm2/s。
Further, after preparing the polypropylene glue solution, firstly adding all the base oil into the reaction kettle, simultaneously adding all the polypropylene glue solution, heating to 170-.
3. Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
(1) the novel high-temperature-resistant hydrocarbon lubricating grease disclosed by the invention comprises base oil, microcrystalline wax, high-molecular-weight crystalline polypropylene, an antirust agent and an antioxidant, wherein the selection and the proportion of main components of the hydrocarbon lubricating grease are optimally designed, and the synergistic effect among the components is utilized, so that on one hand, the dropping point of the hydrocarbon lubricating grease can be effectively improved, the lubricating grease has better high-temperature stability, and the use requirement under the high-temperature condition can be met; on the other hand, the colloidal stability of the lubricating grease can be effectively improved, the lubricating grease is relatively stable in the long-term use process, and the phenomenon of oil product precipitation is not easy to occur, so that the lubricating grease can be better exerted, and the environmental pollution is avoided. Meanwhile, due to the addition of the antirust agent and the antioxidant, the lubricating grease disclosed by the invention has good corrosion and rust prevention performances, and the service life of the lubricating grease is further prolonged.
(2) The novel high-temperature-resistant alkyl lubricating grease disclosed by the invention is specifically used for further improving the dropping point of the lubricating grease by compounding the high-molecular-weight crystalline polypropylene and the high-viscosity naphthenic base oil, and compared with the conventional low-molecular-weight random polypropylene, the dropping point of the novel high-temperature-resistant alkyl lubricating grease is remarkably improved and can reach more than 120 ℃; meanwhile, the high molecular weight crystalline polypropylene has good compatibility and strong binding capacity when being compounded with microcrystalline wax, so that a stable glue solution system can be formed, an oil product is not easy to separate out in the using process, and the using effect of the high molecular weight crystalline polypropylene is further ensured.
(3) According to the preparation method of the novel high-temperature-resistant hydrocarbon lubricating grease, the high-temperature performance and the colloid stability of the hydrocarbon lubricating grease are further improved by selecting the types of the main components of the hydrocarbon lubricating grease and optimally designing the adding proportion of the components, particularly adding high-molecular-weight crystalline polypropylene, so that the hydrocarbon lubricating grease can be effectively used under the high-temperature condition, and the performance is stable in the using process. Meanwhile, the hydrocarbon-based lubricating grease is supplemented with an antirust agent and an antioxidant, so that the hydrocarbon-based lubricating grease has better damp-heat resistance, antirust performance, oxidation stability and the like, and the preparation process is simple to operate, the raw materials are cheap and easy to obtain, and the production cost is favorably reduced.
(4) According to the preparation method of the novel high-temperature-resistant hydrocarbon lubricating grease, the dissolving process of the high-molecular-weight polypropylene is optimized through a large number of experiments, and finally the high-molecular-weight polypropylene is completely dissolved in the low-viscosity base oil to prepare the glue solution and then is added into the high-viscosity naphthenic base oil in proportion through proper process operation treatment, so that the problems that the high-molecular-weight polypropylene is difficult to dissolve in oil products and the oil products are easy to oxidize and deteriorate are effectively solved.
Drawings
FIG. 1 shows the results of performance tests of the hydrocarbon-based grease obtained in example 1.
Detailed Description
The invention relates to novel high-temperature-resistant hydrocarbon lubricating grease which comprises the following components in percentage by mass: 40-60% of base oil, 30-45% of microcrystalline wax, 1-5% of high molecular weight crystalline polypropylene, 3-7% of antirust agent and 0.2-1% of antioxidant. Wherein the base oil adopts high-viscosity naphthenic base oil, and the kinematic viscosity of the naphthenic base oil at 40 ℃ is 400-600mm2S; the melting point of the microcrystalline wax is 60-80 ℃; the molecular weight of the high molecular weight crystalline polypropylene is 10-20 ten thousand; the antirust agent adopts any one of barium petroleum sulfonate, lanolin calcium soap, calcium sulfonate and carboxylate; the antioxidant adopts sterically hindered phenol or organic amine.
Aiming at the problems that the existing hydrocarbon-based lubricating grease has relatively low dropping point and poor high-temperature performance and is difficult to meet the use requirement at high temperature, the dropping point of the lubricating grease is generally increased by adding low-molecular-weight atactic polypropylene into the hydrocarbon-based lubricating grease in the prior art. However, the high temperature performance of the hydrocarbon-based lubricating grease obtained by adding the low molecular weight atactic polypropylene is not good enough, and the dropping point is required to be high enough to meet the use requirement of the hydrocarbon-based lubricating grease under the high temperature condition, the addition amount of the low molecular weight atactic polypropylene is usually large, the balance among the thickening agent, the base oil and the additive in the whole formula is influenced, the use performance of the hydrocarbon-based lubricating grease is limited, and the cost of the hydrocarbon-based lubricating grease is relatively high. According to the invention, through the addition of the high molecular weight crystalline polypropylene, the synergistic effect among the components is utilized, and particularly through the compounding among the high molecular weight crystalline polypropylene, the microcrystalline wax and the high-viscosity naphthenic base oil, on one hand, the dropping point of the hydrocarbon lubricating grease can be improved, so that the hydrocarbon lubricating grease has good high-temperature stability, and the use requirement under the high-temperature condition can be effectively met; on the other hand, the hydrocarbon-based lubricating grease can effectively improve the colloid stability, the damp-heat resistance, the antirust performance and the oxidation stability of the hydrocarbon-based lubricating grease, has better stability in the long-term use process, requires less additive, and has cheap and easily-obtained raw materials, thereby being beneficial to further reducing the production cost. Meanwhile, the high molecular weight crystalline polypropylene has sufficient sources, and the dropping point of the hydrocarbon-based lubricating grease can be further improved by a small addition amount, so that the problem that the dropping point of the hydrocarbon-based lubricating grease can be improved only by a large addition amount of the low molecular weight random polypropylene is solved, the condition of insufficient raw material sources does not exist, and the production cost is favorably reduced.
The invention relates to a preparation method of novel high-temperature-resistant hydrocarbon lubricating grease, which comprises the following specific processes: firstly, mixing high molecular weight crystalline polypropylene and low viscosity base oil by mass percent of 5-15 percent and 85-95 percent respectively, heating to 150-180 ℃ for dissolution to prepare glue solution, wherein the mass percent concentration of the obtained glue solution is 5-15 percent, and heating to 190-200 ℃ for heat preservation for 5-10 hours; and then adding all the base oil into a reaction kettle, simultaneously adding all the polypropylene glue solution, heating to 170-180 ℃, keeping the temperature for 1-3h, stopping heating after the polypropylene is completely dissolved, adding all the microcrystalline wax, slowly cooling to 130-150 ℃, adding the antirust agent and the antioxidant, and continuously cooling to form grease.
It should be noted that, because the high molecular weight polypropylene has high crystallinity and large molecular weight, and has relatively poor compatibility with the base oil, it is difficult to dissolve in the base oil during production, thereby limiting its application in the grease. In the process of research, the inventor finds that the dissolving amount of the high molecular weight polypropylene in the base oil can be increased by increasing the dissolving temperature, but the higher dissolving temperature is easy to cause oxidative deterioration of oil products. Aiming at the problem that the high molecular weight polypropylene is difficult to dissolve, the applicant finally carries out proper process operation treatment through a large amount of experimental research, namely, the high molecular weight polypropylene is firstly dissolved in low-viscosity base oil in advance to prepare high-concentration glue solution, and the high-concentration glue solution is added into lubricating grease base oil in proportion in production, so that the problem that the high molecular weight polypropylene is soluble in high-viscosity naphthenic base oil can be effectively solved. Meanwhile, when the obtained high molecular weight polypropylene glue solution is compounded with microcrystalline wax, the high molecular weight polypropylene glue solution and the microcrystalline wax have good compatibility and strong binding capacity, so that a stable glue solution system can be formed, the phenomenon of oil product precipitation is not easy to occur in the using process, the function of lubricating grease is favorably exerted better, and the environmental pollution is avoided. In addition, the specific preparation process of the glue solution, particularly the viscosity of the used low-viscosity base oil and the mass ratio of the low-viscosity base oil to the high-molecular-weight crystalline polypropylene are crucial to ensure the solubility of the obtained glue solution in the base oil for the lubricating grease, and the inventor optimizes and designs the viscosity of the low-viscosity base oil, the mass ratio of the low-viscosity base oil to the high-molecular-weight crystalline polypropylene and the specific preparation process of the glue solution through a large number of experiments, particularly, the kinematic viscosity of the low-viscosity base oil at 40 ℃ is 20-40mm2And/s, the adding mass percentages of the high molecular weight crystalline polypropylene and the low viscosity base oil are respectively 5-15% and 85-95%, so that the solubility of the high molecular weight crystalline polypropylene in the base oil can be effectively ensured, the high-temperature stability of the obtained lubricating grease can be ensured, and the performance of the lubricating grease can be better improved by adding the high molecular weight crystalline polypropylene into the lubricating grease.
The invention is further described with reference to specific examples.
Example 1
Firstly, high molecular weight crystalline polypropylene with the molecular weight of 10 ten thousand and low viscosity base oil (the kinematic viscosity at 40 ℃ is 20 mm)2/s) respectively mixing 5% and 85% by mass, heating to 165 ℃ for dissolution to prepare a glue solution, heating to 190 ℃ for heat preservation for 5 hours; then 40% of a high viscosity naphthenic base oil (kinematic viscosity at 40 ℃ C. of 400 mm)2And/s) adding the mixture into a reaction kettle, simultaneously adding all polypropylene glue solution, heating to 170 ℃, keeping the temperature for 1h, stopping heating after polypropylene is completely dissolved, adding 30% microcrystalline wax (the melting point is 60 ℃), slowly cooling to 130 ℃, adding 3% barium petroleum sulfonate and 0.2% hindered phenol, and continuously cooling to form grease.
The dropping point, penetration, steel mesh oil separation, oxidation stability and corrosion resistance of the obtained hydrocarbon-based grease were tested, and the test method and test results are shown in fig. 1. As can be seen from FIG. 1, the dropping point of the hydrocarbon-based grease obtained in this example is 120 ℃ (specifically 126 ℃) or higher, and the grease has good colloid stability, oxidation stability and corrosion resistance.
Example 2
Firstly, high molecular weight crystalline polypropylene with the molecular weight of 15 ten thousand and low viscosity base oil (the kinematic viscosity at 40 ℃ is 25 mm)2/s) respectively mixing 10% and 85% by mass, heating to 150 ℃ for dissolution to prepare a glue solution, heating to 195 ℃ for heat preservation for 6 hours; then 40% of a high viscosity naphthenic base oil (kinematic viscosity at 40 ℃ C. of 500 mm)2And/s) adding the mixture into a reaction kettle, simultaneously adding all polypropylene glue solution, heating to 175 ℃, keeping the temperature for 1.5h, stopping heating after polypropylene is completely dissolved, adding 35% of microcrystalline wax (the melting point is 65 ℃), slowly cooling to 135 ℃, adding 4% of lanolin calcium soap and 0.5% of sterically hindered phenol, and continuously cooling to form fat.
The dropping point, penetration, steel mesh oil separation, oxidation stability and corrosion resistance of the obtained hydrocarbon-based grease were tested by the same test method as in example 1, and the test results were substantially the same as in example 1.
Example 3
Firstly, high molecular weight crystalline polypropylene with the molecular weight of 20 ten thousand and low viscosity base oil (the kinematic viscosity at 40 ℃ is 30 mm)2/s) respectively mixing 15% and 95% by mass, heating to 175 ℃ for dissolution to prepare a glue solution, heating to 200 ℃ for heat preservation for 10 hours; then 45% of a high viscosity naphthenic base oil (kinematic viscosity at 40 ℃ of 550 mm) is added2And/s) adding the mixture into a reaction kettle, simultaneously adding all polypropylene glue solution, heating to 175 ℃, keeping the temperature for 3 hours, stopping heating after polypropylene is completely dissolved, adding 40% microcrystalline wax (the melting point is 70 ℃), slowly cooling to 140 ℃, adding 5% calcium sulfonate and 0.8% organic amine, and continuously cooling to form grease.
The dropping point, penetration, steel mesh oil separation, oxidation stability and corrosion resistance of the obtained hydrocarbon-based lubricating grease were tested by the same test method as in example 1, and the test results were slightly better than those of example 1.
Example 4
Firstly, high molecular weight crystalline polypropylene with the molecular weight of 18 ten thousand and low viscosity base oil (the kinematic viscosity at 40 ℃ is 40 mm)2/s) respectively mixing 15% and 90% by mass, heating to 180 ℃ for dissolution to prepare a glue solution, heating to 195 ℃ and keeping the temperature for 8 hours; then 50% of a high viscosity naphthenic base oil (kinematic viscosity at 40 ℃ of 600 mm) is added2And/s) adding the mixture into a reaction kettle, simultaneously adding all polypropylene glue solution, heating to 180 ℃, keeping the temperature for 2.5 hours, stopping heating after polypropylene is completely dissolved, adding 45% microcrystalline wax (the melting point is 80 ℃), slowly cooling to 150 ℃, adding 7% carboxylate and 1% hindered phenol, and continuously cooling to form grease.
The dropping point, penetration, steel mesh oil separation, oxidation stability and corrosion resistance of the obtained hydrocarbon-based grease were tested by the same test method as in example 1, and the test results were slightly inferior to those in example 1.
Claims (10)
1. A novel high-temperature-resistant hydrocarbon lubricating grease is characterized in that: the composite material comprises the following components in percentage by mass:
2. the novel high temperature resistant hydrocarbon-based grease of claim 1, wherein: the base oil adopts high-viscosity naphthenic base oil, and the kinematic viscosity of the naphthenic base oil at 40 ℃ is 400-600mm2/s。
3. The novel high temperature resistant hydrocarbon-based grease of claim 1, wherein: the melting point of the microcrystalline wax is 60-80 ℃.
4. The novel high temperature resistant hydrocarbon-based grease of claim 1, wherein: the molecular weight of the high molecular weight crystalline polypropylene is 10-20 ten thousand.
5. A new high temperature resistant hydrocarbon based grease according to any one of claims 1-4 wherein: the antirust agent adopts any one of barium petroleum sulfonate, lanolin calcium soap, calcium sulfonate and carboxylate.
6. A new high temperature resistant hydrocarbon based grease according to any one of claims 1-4 wherein: the antioxidant adopts sterically hindered phenol or organic amine.
7. A process for the preparation of a hydrocarbon-based grease according to any one of claims 1 to 6, wherein: firstly, dissolving high molecular weight crystalline polypropylene in low viscosity base oil in advance to prepare high molecular weight crystalline polypropylene glue solution; and dissolving the obtained glue solution with base oil, adding microcrystalline wax, and finally adding all additives to obtain the lubricating grease.
8. The method of preparing a hydrocarbon-based grease according to claim 7, wherein: when preparing the high molecular weight crystalline polypropylene glue solution, adding the high molecular weight crystalline polypropylene into the low viscosity base oil at the temperature of 150-.
9. The method of preparing a hydrocarbon-based grease according to claim 8, wherein: the addition mass percentages of the high molecular weight crystalline polypropylene and the low viscosity base oil are respectively 5-15% and 85-95%, and the kinematic viscosity of the low viscosity base oil at 40 ℃ is 20-40mm2/s。
10. Process for the preparation of a hydrocarbon-based grease according to any one of claims 7-9, characterized in that: after preparing the polypropylene glue solution, firstly adding all the base oil into a reaction kettle, simultaneously adding all the polypropylene glue solution, heating to 170-180 ℃, keeping the temperature for 1-3h, stopping heating after polypropylene is completely dissolved, then adding all the microcrystalline wax, slowly cooling to 130-150 ℃, then adding the antirust agent and the antioxidant, and continuously cooling to form grease.
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| CN113321937A (en) * | 2021-05-31 | 2021-08-31 | 张忆霄 | Composition of directly coated solid carrier material |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5049289A (en) * | 1989-10-10 | 1991-09-17 | Jacobs Norman L | Graphite-containing lubricant composition |
| CN103320205A (en) * | 2013-06-21 | 2013-09-25 | 天津市津冠润滑脂有限公司 | Composition of lubricating grease for protecting bridge cable anchor system |
| CN104250575A (en) * | 2013-06-25 | 2014-12-31 | 中国石油天然气股份有限公司 | Steel wire rope grease composition with excellent performance and preparation method thereof |
| CN104789304A (en) * | 2015-04-28 | 2015-07-22 | 天津市金海利油脂有限公司 | Hydrocarbon-base lubricating grease and preparation method thereof |
| WO2019189234A1 (en) * | 2018-03-30 | 2019-10-03 | 出光興産株式会社 | Grease composition, mechanism component, and production method for grease composition |
-
2019
- 2019-12-05 CN CN201911230685.8A patent/CN111004667A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5049289A (en) * | 1989-10-10 | 1991-09-17 | Jacobs Norman L | Graphite-containing lubricant composition |
| CN103320205A (en) * | 2013-06-21 | 2013-09-25 | 天津市津冠润滑脂有限公司 | Composition of lubricating grease for protecting bridge cable anchor system |
| CN104250575A (en) * | 2013-06-25 | 2014-12-31 | 中国石油天然气股份有限公司 | Steel wire rope grease composition with excellent performance and preparation method thereof |
| CN104789304A (en) * | 2015-04-28 | 2015-07-22 | 天津市金海利油脂有限公司 | Hydrocarbon-base lubricating grease and preparation method thereof |
| WO2019189234A1 (en) * | 2018-03-30 | 2019-10-03 | 出光興産株式会社 | Grease composition, mechanism component, and production method for grease composition |
Non-Patent Citations (1)
| Title |
|---|
| 罗胜河: "《塑料材料手册》", 31 March 1988 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113321937A (en) * | 2021-05-31 | 2021-08-31 | 张忆霄 | Composition of directly coated solid carrier material |
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Application publication date: 20200414 |