CN113430032A - High-power heavy hammer cylinder lubricating grease composition and preparation method thereof - Google Patents
High-power heavy hammer cylinder lubricating grease composition and preparation method thereof Download PDFInfo
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- CN113430032A CN113430032A CN202110636922.1A CN202110636922A CN113430032A CN 113430032 A CN113430032 A CN 113430032A CN 202110636922 A CN202110636922 A CN 202110636922A CN 113430032 A CN113430032 A CN 113430032A
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- 239000004519 grease Substances 0.000 title claims abstract description 64
- 239000000203 mixture Substances 0.000 title claims abstract description 58
- 230000001050 lubricating effect Effects 0.000 title claims abstract description 49
- 238000002360 preparation method Methods 0.000 title abstract description 15
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 claims abstract description 75
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000002199 base oil Substances 0.000 claims abstract description 35
- 239000002253 acid Substances 0.000 claims abstract description 23
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 20
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 20
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 20
- 239000002562 thickening agent Substances 0.000 claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims description 31
- 239000003795 chemical substances by application Substances 0.000 claims description 22
- 239000003921 oil Substances 0.000 claims description 21
- 235000019198 oils Nutrition 0.000 claims description 21
- 239000003513 alkali Substances 0.000 claims description 15
- 239000003963 antioxidant agent Substances 0.000 claims description 14
- 230000003078 antioxidant effect Effects 0.000 claims description 14
- 238000010791 quenching Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 10
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 claims description 8
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 7
- 230000000630 rising effect Effects 0.000 claims description 7
- 229910052725 zinc Inorganic materials 0.000 claims description 7
- 239000011701 zinc Substances 0.000 claims description 7
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 5
- 235000012343 cottonseed oil Nutrition 0.000 claims description 5
- 239000002385 cottonseed oil Substances 0.000 claims description 5
- 229910052750 molybdenum Inorganic materials 0.000 claims description 5
- 239000011733 molybdenum Substances 0.000 claims description 5
- 238000003541 multi-stage reaction Methods 0.000 claims description 5
- 229920013639 polyalphaolefin Polymers 0.000 claims description 5
- 238000007127 saponification reaction Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 239000002480 mineral oil Substances 0.000 claims description 4
- 235000010446 mineral oil Nutrition 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005536 corrosion prevention Methods 0.000 abstract description 3
- 239000010687 lubricating oil Substances 0.000 abstract description 3
- 230000003647 oxidation Effects 0.000 abstract description 3
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- 230000000171 quenching effect Effects 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 238000007872 degassing Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 3
- DKVNPHBNOWQYFE-UHFFFAOYSA-N carbamodithioic acid Chemical compound NC(S)=S DKVNPHBNOWQYFE-UHFFFAOYSA-N 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000012990 dithiocarbamate Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000344 soap Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- BDJRBEYXGGNYIS-UHFFFAOYSA-N nonanedioic acid Chemical compound OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000000341 volatile oil Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- C10M2201/06—Metal compounds
- C10M2201/062—Oxides; Hydroxides; Carbonates or bicarbonates
-
- 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
- C10M2205/022—Ethene
-
- 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
- C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
- C10M2207/127—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids polycarboxylic
-
- 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
- C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
- C10M2207/128—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids containing hydroxy groups; Ethers thereof
-
- 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
- C10M2219/02—Sulfur-containing compounds obtained by sulfurisation with sulfur or sulfur-containing compounds
-
- 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
- C10M2219/06—Thio-acids; Thiocyanates; Derivatives thereof
-
- 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
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/04—Phosphate esters
- C10M2223/041—Triaryl phosphates
-
- 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
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/04—Phosphate esters
- C10M2223/042—Metal salts thereof
-
- 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
- C10M2227/00—Organic non-macromolecular compounds containing atoms of elements not provided for in groups C10M2203/00, C10M2207/00, C10M2211/00, C10M2215/00, C10M2219/00 or C10M2223/00 as ingredients in lubricant compositions
- C10M2227/06—Organic compounds derived from inorganic acids or metal salts
- C10M2227/066—Organic compounds derived from inorganic acids or metal salts derived from Mo or W
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/12—Inhibition of corrosion, e.g. anti-rust agents or anti-corrosives
Abstract
The invention relates to the field of lubricating oil compositions, in particular to a high-power heavy hammer cylinder lubricating grease composition and a preparation method thereof. The lubricating grease composition comprises base oil and a thickening agent; the thickening agent is prepared from calcium hydroxide, lithium hydroxide, dodecahydroxystearic acid and sebacic acid; wherein the mass ratio of the calcium hydroxide to the lithium hydroxide is 1: 7-9; the mass ratio of the sebacic acid to the dodecahydroxystearic acid is 1: 2-4. The lubricating grease composition has good wear resistance, high and low temperature performance, good oxidation resistance, good wear resistance, good corrosion prevention and protection effects and the like, can keep excellent comprehensive performance at the temperature of-15-200 ℃, and can better meet the lubricating working condition of a high-power heavy hammer cylinder.
Description
Technical Field
The invention relates to the field of lubricating oil compositions, in particular to a high-power heavy hammer cylinder lubricating grease composition and a preparation method thereof.
Background
The electric hammer is an electric rotary hammer drill with a safety clutch and a pneumatic hammering mechanism. The drill bit is impacted by compressed gas by utilizing the principle of piston motion so as to open holes on hard materials such as concrete, bricks, stones and the like. The impact motion is formed by the rotation motion of a motor and the driving of an eccentric connecting rod mechanism through a gear, so that the air compression piston reciprocates in the cylinder sleeve. When the electric hammer operates, the lubricating grease is added, so that the aging abrasion of the sealing rubber ring of the electric hammer cylinder can be reduced, the protective performance is improved, the life cycle of the electric hammer can be prolonged, and unnecessary loss is reduced. Meanwhile, other electric tools (such as electric picks and the like) with similar working condition characteristics also have the requirement.
When the high-power heavy hammer cylinder operates, the high-power heavy hammer cylinder often has the working condition characteristics of large vibration, high temperature, easy oil leakage, high-frequency sliding friction and the like in the cylinder, so that the condition of lubrication failure is easy to occur when the existing lubricating grease is applied in the high-power heavy hammer cylinder, and the service life of the high-power heavy hammer cylinder is adversely affected.
Therefore, there is a need to develop a grease with excellent comprehensive performance to balance the contradiction between high temperature, high vibration, easy oil leakage and long service life when the cylinder operates, so as to solve the problems of the prior art.
Disclosure of Invention
In order to solve the technical problems, the invention firstly researches the reason that the lubricating grease is easy to cause lubrication failure in a high-power heavy hammer cylinder, and finds that the reasons are mainly caused by poor adhesion and insufficient wear resistance of the lubricating grease at high temperature. Based on the discovery, the invention further optimizes and obtains the high-power heavy hammer cylinder lubricating grease composition and the preparation method thereof.
Specifically, the invention firstly provides a high-power heavy hammer cylinder lubricating grease composition which comprises base oil and a thickening agent;
the base oil is prepared from the following components in a mass ratio of 8-10: 1 a mixture of a mineral oil and a polyalphaolefin synthetic oil having a viscosity of 200-300mm at 40 DEG C2S; the thickening agent is prepared from calcium hydroxide, lithium hydroxide, dodecahydroxystearic acid and sebacic acid; wherein the mass ratio of the calcium hydroxide to the lithium hydroxide is 1: 7-9; the mass ratio of the sebacic acid to the dodecahydroxystearic acid is 1: 2-4;
based on the total mass of the lubricating grease composition, the mass percentage of the thickening agent is 13% -15%.
The invention discovers that after the base oil and the thickening agent are compounded in the above way, the high-temperature resistance of the lubricating grease can be obviously improved, the performance loss of the lubricating grease in the high-temperature operation environment of the high-power heavy hammer cylinder can be avoided, and the lubricating effect can be further ensured.
In a preferred embodiment, the mass ratio of the calcium hydroxide to the lithium hydroxide is 1: 7.69; the mass ratio of the sebacic acid to the dodecahydroxystearic acid is 1: 3.
preferably, when the mineral oil is a mixture of 500SN (feil), 120BS (metallocene) and HVI900 (metallocene) in a mass ratio of (5-7): 1 (1.5-2.5):1 and the polyalphaolefin synthetic oil is feil PAO65 (metallocene), it is more advantageous to balance the fluidity and adhesion of the grease.
In a preferred embodiment, the base oil is a mixture of 500SN (Mobil), 120BS (Molen), HVI900 (Molen) and Mobil PAO65 (metallocene) in a mass ratio of 6:2:1: 1.
Furthermore, the invention optimizes the selection and the dosage of other components in the lubricating grease composition, so that other general properties of the composition, such as good oxidation resistance, good abrasion resistance, corrosion prevention and protection effects, and the like, are further improved, and the lubricating condition of a high-power heavy hammer cylinder can be better met.
Preferably, the lubricating grease composition further comprises 1.0-3.0% of antioxidant based on the total mass of the lubricating grease composition, wherein the antioxidant is GA-034. The GA-034 is an antioxidant product of New Tianjin Lianlong Material GmbH.
Preferably, it further comprises 1.0% to 3.0% of zinc dialkyldithiophosphate, based on the total mass of the grease composition.
Preferably, the lubricating grease composition further comprises 1.0-3.0% of an antiwear agent based on the total mass of the lubricating grease composition, wherein the antiwear agent is prepared from the following components in percentage by mass (1-3): (1-3): 1 (TCP), oil soluble molybdenum dialkyldithiocarbamate and sulfurized cottonseed oil (T405).
Preferably, it further comprises 1.0% to 3.0% of an extreme pressure agent which is an aminothioester (T323), based on the total mass of the grease composition.
Preferably, the lubricating grease composition further comprises 8.0-10.0% of a viscosity index improver, based on the total mass of the lubricating grease composition, wherein the viscosity index improver is JINEX 6130. The JINEX6130 is a viscosity index improver product of Jinzhou essential oil additives Co.
In a preferred embodiment, the high-power heavy hammer cylinder lubricating grease composition comprises the following components in percentage by mass:
the above preferred embodiments can be combined by the person skilled in the art according to common knowledge to obtain a preferred embodiment of the high power weight cylinder grease composition of the present invention.
The invention further provides a preparation method of the high-power heavy hammer cylinder lubricating grease composition, which comprises the following steps:
mixing 35-45% of base oil with dodecahydroxystearic acid and sebacic acid, heating to 80-85 ℃ to dissolve acid in the base oil, adding alkali liquor containing calcium hydroxide and 30-40% (preferably one third) of lithium hydroxide, and performing saponification reaction at 98-102 ℃ for 60-70 minutes;
then dropwise adding a solution containing the lithium hydroxide with the rest formula amount into the reaction system, wherein the alkali dropping time is 90-150 minutes; after the alkali dropping is finished, heating to 130-140 ℃, and carrying out constant-temperature composite reaction for 30-40 minutes;
after the constant temperature is over, adding 7.5-8.5% of base oil serving as temperature rising oil into the reaction system, raising the reaction temperature to 205-215 ℃, and keeping the temperature for 2-5 minutes;
then adding 20-25% of base oil as quench oil into the reaction system, reducing the reaction temperature to 175-185 ℃, and carrying out constant temperature treatment for 15-20 minutes;
finally, the reaction temperature is reduced to be below 100 ℃, and the base oil with the rest formula amount is added to adjust the consistency of the lubricating grease.
By the above preparation method, a more uniform soap fiber structure can be obtained while the fluidity and adhesiveness of the grease are better balanced.
Preferably, the preparation method further comprises:
adding the viscosity index improver when the temperature of the reaction system is 100-120 ℃, and adding the antioxidant, the zinc dialkyl dithiophosphate, the antiwear agent and the extreme pressure agent when the temperature of the reaction system is reduced to be below 60 ℃.
In specific implementation, the preparation method further comprises the steps of homogenizing, filtering and degassing the mixed raw materials to obtain the finished grease, and specific operations and parameters of the preparation method can be set by a person skilled in the art according to common knowledge, so that good effects can be obtained in the invention, and the preparation method is not further limited herein.
The above-described preferred embodiments can be combined by the person skilled in the art in accordance with common general knowledge to obtain preferred embodiments of the preparation method of the present invention.
Based on the technical scheme, the invention has the following beneficial effects:
the invention uses a unique composite metal soap-based high-temperature thickening agent type, so that the lubricating grease has outstanding high-temperature resistance and can well meet the high-temperature use requirement of 140-180 ℃ of the electric hammer cylinder.
The invention obtains uniform soap fiber structure through reasonable formula and proper process conditions, effectively balances the fluidity and the adhesiveness of the lubricating grease, and has good wear resistance and high and low temperature performance.
The balanced additive system in the invention ensures that the prepared lubricating grease has the characteristics of good oxidation resistance, good abrasion resistance, good corrosion prevention and protection effects and the like, can keep excellent comprehensive performance at the temperature of-15-200 ℃, and can better meet the lubricating working condition of a heavy hammer cylinder with high power.
Detailed Description
The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
GA-034, referred to in the following examples, is an antioxidant product from New Tianjin Lianlong materials Ltd, and JINEX6130 is a viscosity index improver product from refined lubricating oil additives Ltd, Jinzhou.
The examples do not show the specific techniques or conditions, according to the technical or conditions described in the literature in the field, or according to the product specifications. The reagents or instruments used are conventional products available from regular distributors, not indicated by the manufacturer.
Example 1
The embodiment firstly provides a high-power heavy hammer cylinder lubricating grease composition, and the formula is as follows:
wherein the thickening agent is prepared from calcium hydroxide, lithium hydroxide, dodecahydroxystearic acid and sebacic acid; the mass ratio of the calcium hydroxide to the lithium hydroxide is 1: 7.69; the mass ratio of the sebacic acid to the dodecahydroxystearic acid is 1: 3. the antioxidant is as follows: GA-034. The antiwear agent comprises the following components in percentage by weight: 1.0% tricresyl phosphate (TCP), 0.5% cottonseed oil sulfide (T405), 1.0% molybdenum dialkyl dithiocarbamate, oil soluble. The extreme pressure agent is aminothioester (T323). The viscosity index improver is JINEX6130 in weight percent. The base oil is a mixture of 500SN (Mobil), 120BS (Mobil), HVI900 (Mobil) and Mobil PAO65 (metallocene) in a mass ratio of 6:2:1: 1.
The embodiment further provides a preparation method of the high-power heavy hammer cylinder lubricating grease composition, which comprises the following steps:
adding 40% of base oil with the formula amount into a reaction kettle, adding dodecahydroxystearic acid and sebacic acid, heating to 85 ℃, and completely dissolving acid in the base oil; then, dissolving calcium hydroxide and one third of formula amount of lithium hydroxide by using water, adding the dissolved alkali liquor into a reaction kettle, and starting saponification reaction for 70 minutes at the reaction temperature of 100 ℃; continuously dissolving the remaining two thirds of the formula amount of lithium hydroxide by using water, and dripping alkali into the reaction kettle for 110 minutes; after the alkali dropping is finished, heating to 135 ℃, and carrying out constant-temperature composite reaction for 35 minutes; after the constant temperature is finished, adding 8.0 percent of base oil with the formula amount as temperature rising oil, rising the temperature of the reaction kettle to 210 ℃, and keeping the temperature for 3 minutes; then, 23% of the formulated amount of base oil was added as a quenching oil, and quenching was started, and the temperature after quenching was 182 ℃ and the temperature after quenching was kept constant for 18 minutes. Finally, pouring the mixture into a kettle to cool, cooling to below 100 ℃, and adjusting the consistency of the lubricating grease by using the residual base oil; and adding the viscosity index improver when the temperature is reduced to 105 ℃, adding the antioxidant, the zinc dialkyl dithiophosphate, the antiwear agent and the extreme pressure agent when the temperature is reduced to below 60 ℃, homogenizing, filtering and degassing to obtain the finished lubricating grease.
Example 2
The embodiment firstly provides a high-power heavy hammer cylinder lubricating grease composition, and the formula is as follows:
wherein the thickening agent is prepared from calcium hydroxide, lithium hydroxide, dodecahydroxystearic acid and sebacic acid; the mass ratio of the calcium hydroxide to the lithium hydroxide is 1: 7.69; the mass ratio of the sebacic acid to the dodecahydroxystearic acid is 1: 3. the antioxidant is as follows: GA-034. The antiwear agent comprises the following components in percentage by weight: 1.0% tricresyl phosphate (TCP), 0.5% cottonseed oil sulfide (T405), 1.5% molybdenum dialkyl dithiocarbamate, oil soluble. The extreme pressure agent is aminothioester (T323). The viscosity index improver is JINEX6130 in weight percent. The base oil is a mixture of 500SN (Mobil), 120BS (Mobil), HVI900 (Mobil) and Mobil PAO65 (metallocene) in a mass ratio of 6:2:1: 1.
The embodiment further provides a preparation method of the high-power heavy hammer cylinder lubricating grease composition, which comprises the following steps:
adding 45% of base oil with the formula amount into a reaction kettle, adding dodecahydroxystearic acid and sebacic acid, heating to 85 ℃, and completely dissolving acid in the base oil; then, dissolving calcium hydroxide and one third of formula amount of lithium hydroxide by using water, adding the dissolved alkali liquor into a reaction kettle, and starting saponification reaction for 70 minutes at the reaction temperature of 102 ℃; continuously dissolving the remaining two thirds of the formula amount of lithium hydroxide by using water, and dripping alkali into the reaction kettle for 150 minutes; after the alkali dropping is finished, heating to 140 ℃, and carrying out constant-temperature composite reaction for 40 minutes; after the constant temperature is finished, adding 8.5 percent of base oil with the formula amount as temperature rising oil, rising the temperature of the reaction kettle to 210 ℃, and keeping the temperature for 5 minutes; then, 25% of the formulated amount of base oil was added as a quenching oil, and quenching was started at 185 ℃ after quenching and then kept at constant temperature for 20 minutes after quenching. Finally, pouring the mixture into a kettle to cool, cooling to below 100 ℃, and adjusting the consistency of the lubricating grease by using the residual base oil; and adding the viscosity index improver when the temperature is reduced to 120 ℃, adding the antioxidant, the zinc dialkyl dithiophosphate, the antiwear agent and the extreme pressure agent when the temperature is reduced to below 60 ℃, homogenizing, filtering and degassing to obtain the finished lubricating grease.
Example 3
The embodiment firstly provides a high-power heavy hammer cylinder lubricating grease composition, and the formula is as follows:
wherein the thickening agent is prepared from calcium hydroxide, lithium hydroxide, dodecahydroxystearic acid and sebacic acid; the mass ratio of the calcium hydroxide to the lithium hydroxide is 1: 7.69; the mass ratio of the sebacic acid to the dodecahydroxystearic acid is 1: 3. the antioxidant is as follows: GA-034. The antiwear agent comprises the following components in percentage by weight: 0.25% tricresyl phosphate (TCP), 0.5% cottonseed oil sulfide (T405), 0.25% molybdenum dialkyl dithiocarbamate, oil soluble. The extreme pressure agent is aminothioester (T323). The viscosity index improver is JINEX6130 in weight percent. The base oil is a mixture of 500SN (Mobil), 120BS (Mobil), HVI900 (Mobil) and Mobil PAO65 (metallocene) in a mass ratio of 6:2:1: 1.
The embodiment further provides a preparation method of the high-power heavy hammer cylinder lubricating grease composition, which comprises the following steps:
adding 35% of base oil according to the formula amount into a reaction kettle, adding dodecahydroxystearic acid and sebacic acid, heating to 80 ℃, and completely dissolving acid in the base oil; then, dissolving calcium hydroxide and one third of formula amount of lithium hydroxide by using water, adding the dissolved alkali liquor into a reaction kettle, and starting saponification reaction for 60 minutes at the reaction temperature of 98 ℃; continuously dissolving the remaining two thirds of the formula amount of lithium hydroxide by using water, and dripping alkali into the reaction kettle for 90 minutes; after the alkali dropping is finished, heating to 130 ℃, and carrying out constant-temperature composite reaction for 30 minutes; after the constant temperature is finished, 7.5 percent of base oil with the formula amount is added as temperature rising oil, the reaction kettle is raised to 210 ℃, and the temperature is kept for 2 minutes; then, 20% of the formulated amount of base oil was added as a quenching oil, and quenching was started, after which the temperature was 175 ℃ and the temperature was maintained for 15 minutes. Finally, pouring the mixture into a kettle to cool, cooling to below 100 ℃, and adjusting the consistency of the lubricating grease by using the residual base oil; and adding the viscosity index improver when the temperature is reduced to 100 ℃, adding the antioxidant, the zinc dialkyl dithiophosphate, the antiwear agent and the extreme pressure agent when the temperature is reduced to below 60 ℃, homogenizing, filtering and degassing to obtain the finished lubricating grease.
Comparative example 1
This comparative example differs from example 1 in that the sebacic acid used in the thickener was replaced by an equal amount of azelaic acid.
Comparative example 2
The present comparative example differs from example 1 in that, in the case where the total mass of calcium hydroxide and lithium hydroxide is the same, the mass ratio of calcium hydroxide to lithium hydroxide is changed to 1: 6.
test examples
In the test example, the physical and chemical properties of the grease composition products obtained in the examples and the comparative examples were tested.
The test methods are as follows in table 1:
TABLE 1
The test results are given in table 2 below:
TABLE 2
Although the invention has been described in detail hereinabove with respect to a general description and specific embodiments thereof, it will be apparent to those skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (10)
1. The high-power heavy hammer cylinder lubricating grease composition is characterized by comprising base oil and a thickening agent;
the base oil is prepared from the following components in a mass ratio of 8-10: 1 a mixture of a mineral oil and a polyalphaolefin synthetic oil having a viscosity of 200-300mm at 40 DEG C2S; the thickening agent is prepared from calcium hydroxide, lithium hydroxide, dodecahydroxystearic acid and sebacic acid; wherein the mass ratio of the calcium hydroxide to the lithium hydroxide is 1: 7-9; the mass ratio of the sebacic acid to the dodecahydroxystearic acid is 1: 2-4;
based on the total mass of the lubricating grease composition, the mass percentage of the thickening agent is 13% -15%.
2. The high power heavy hammer cylinder grease composition according to claim 1, wherein the mineral oil is a mixture of 500SN, 120BS and HVI900 in a mass ratio of (5-7): (1.5-2.5):1, and the polyalphaolefin synthetic oil is Mobil PAO 65.
3. The high power heavy hammer cylinder grease composition according to claim 1 or 2, further comprising 1.0-3.0% of an antioxidant based on the total mass of the grease composition, wherein the antioxidant is GA-034.
4. The high power heavy hammer cylinder grease composition according to any one of claims 1 to 3, further comprising 1.0% to 3.0% of zinc dialkyldithiophosphate, based on the total mass of the grease composition.
5. The high-power heavy hammer cylinder lubricating grease composition according to any one of claims 1 to 4, further comprising 1.0% to 3.0% of an antiwear agent based on the total mass of the lubricating grease composition, wherein the antiwear agent is prepared from the following components in a mass ratio of (1-3): (1-3): 1, a mixture of tricresyl phosphate, oil soluble molybdenum dialkyldithiocarbamate and sulfurized cottonseed oil.
6. The high power heavy hammer cylinder grease composition according to any one of claims 1 to 5, further comprising 1.0% to 3.0% of an extreme pressure agent, which is an aminothioester, based on the total mass of the grease composition.
7. The high power heavy hammer cylinder grease composition according to any one of claims 1 to 6, further comprising 8.0% to 10.0% of a viscosity index improver, based on the total mass of the grease composition, said viscosity index improver being JINEX 6130.
8. The high power heavy hammer cylinder grease composition according to any one of claims 1 to 7, characterized by consisting of the following components in mass percent:
9. the method for preparing a high power heavy hammer cylinder grease composition according to any one of claims 1 to 8, comprising:
mixing 35-45% of base oil, dodecahydroxystearic acid and sebacic acid, heating to 80-85 ℃ to melt acid in the base oil, adding alkali liquor containing calcium hydroxide and 30-40% of lithium hydroxide, and performing saponification reaction at 98-102 ℃ for 60-70 minutes;
then dropwise adding a solution containing the lithium hydroxide with the rest formula amount into the reaction system, wherein the alkali dropping time is 90-150 minutes; after the alkali dropping is finished, heating to 130-140 ℃, and carrying out constant-temperature composite reaction for 30-40 minutes;
after the constant temperature is over, adding 7.5-8.5% of base oil serving as temperature rising oil into the reaction system, raising the reaction temperature to 205-215 ℃, and keeping the temperature for 2-5 minutes;
then adding 20-25% of base oil as quench oil into the reaction system, reducing the reaction temperature to 175-185 ℃, and carrying out constant temperature treatment for 15-20 minutes;
finally, the reaction temperature is reduced to be below 100 ℃, and the base oil with the rest formula amount is added to adjust the consistency of the lubricating grease.
10. The method for preparing according to claim 9, characterized in that it comprises:
adding the viscosity index improver when the temperature of the reaction system is 100-120 ℃, and adding the antioxidant, the zinc dialkyl dithiophosphate, the antiwear agent and the extreme pressure agent when the temperature of the reaction system is reduced to be below 60 ℃.
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