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Food grade bearing grease for hydraulic engineering as well as preparation method and application thereof

A bearing lubrication and hydraulic engineering technology, applied in the field of food-grade grease, can solve the problems of no food-grade grease literature and patent reports, and achieve the effect of good anti-wear extreme pressure, less oil splash and prolonging bearing life.

Inactive Publication Date: 2018-02-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Through literature and patent inquiries, there are no literature and patent reports on food-grade grease used in water conservancy engineering bearings at home and abroad.

Method used

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  • Food grade bearing grease for hydraulic engineering as well as preparation method and application thereof
  • Food grade bearing grease for hydraulic engineering as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0034] Base oil: 87%;

[0035] Thickener: 13%;

[0036] Sulfonate: 5% (additional);

[0037] The base oil is a food-grade synthetic oil, and the kinematic viscosity of the base oil at 100°C is 10 mm 2 / s and 40mm 2 / s; the thickener is composed of stearic acid, benzoic acid, and aluminum isopropoxide, and its molar ratio is 1:1.2:1.3; the organoaluminum is aluminum isopropoxide; the rust inhibitor is sulfonic acid calcium.

[0038] 150 grams of stearic acid, 77 grams of benzoic acid, and 140 grams of aluminum isopropoxide are added to 2000 grams of food-grade synthetic oil (ν 100 =10), heat to 80°C, react for 1 hour, continue to heat to 100°C, add 37 grams of tap water, keep the temperature constant for 1 hour, continue to heat up the material to 210°C, keep the temperature for 10 minutes, add 500g food-grade synthetic oil (ν 100 =40), when temperature dropped below 140 DEG C, add 143 grams of calcium sulfonate, carry out aftertreatment after stirring to obtain finished p...

example 2

[0041] Base oil: 94%;

[0042] Thickener: 6%;

[0043] Imidazoline: 0.5% (additional);

[0044] Phosphate amine salt: 0.5% (additional);

[0045] Triphenylthiophosphate: 0.5% (additional);

[0046] Calcium carbonate: 5% (additional);

[0047] The base oil is a food-grade synthetic oil, and the kinematic viscosity of the base oil at 100°C is 10 mm 2 / s and 60mm 2 / s; the thickening agent is composed of lauryl hydroxystearic acid, p-toluic acid, and aluminum isopropoxide, and its molar ratio is 1:1:1; the organoaluminum is aluminum isopropoxide; the The antirust agent is imidazoline; the extreme pressure antiwear agent is phosphate ester amine salt, triphenyl thiophosphate, calcium carbonate.

[0048] 150 grams of lauryl hydroxystearic acid, 68 grams of p-toluic acid, and 102 grams of aluminum isopropoxide are added to 3509 grams of food-grade synthetic oil (ν 100 =10), heated to 60°C, reacted for 1.5 hours, continued to heat to 120°C, added 18 grams of tap water, kept at...

example 3

[0051] Base oil: 85%;

[0052] Thickener: 15%;

[0053] Phosphate amine salt: 0.1% (additional);

[0054] Triphenylthiophosphate: 0.1% (additional);

[0055] Calcium carbonate: 10% (additional);

[0056] Calcium sulfonate: 10% (additional);

[0057] The base oil is a food-grade synthetic oil, and the kinematic viscosity of the base oil at 100°C is 10 mm 2 / s and 40mm 2 / s; the thickener is composed of palmitic acid, benzoic acid, and aluminum isopropoxide, and its molar ratio is 1:1.7:1.1; the organoaluminum is aluminum isopropoxide; the rust inhibitor is sulfonic acid Calcium; the extreme pressure antiwear agent is phosphate ester amine salt, triphenylthiophosphate, calcium carbonate.

[0058] 150 grams of palmitic acid, 109 grams of benzoic acid, and 119 grams of aluminum isopropoxide are added to 2035 grams of food-grade synthetic oil (ν 100 =10), heated to 100°C, reacted for 2 hours, continued to heat to 140°C, added 11 grams of tap water, kept at a constant temperat...

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Abstract

The invention provides food grade bearing grease for hydraulic engineering as well as a preparation method and application thereof. The grease composition comprises food grade base oil, a thickening agent and an additive composition. The grease composition comprises the following components in percentage in weight: 84-94% of base oil, 6-16% of the thickening agent, 0.5-10% of an additional antirust agent and 0.1-10% of an additional anti-wear reagent at extreme pressure. The thickening agent is composed of reactants of C16-C20 long-chain fatty acids, aromatic acid and organic aluminum and meets the food grade requirement. The molar ratio of the three raw materials is 1 to 1-1.7 to 1-1.3. The organic aluminum comprises aluminum isopropoxide or triisopropanol trioxide. The bearing grease disclosed by the invention is excellent in anti-wear and extreme pressure property, and the service life of the bearing is prolonged; the water resistance is excellent, the high / low-temperature performance is excellent, and the operating temperature ranges from 40 DEG C below zero to 80 DEG C. The bearing grease disclosed by the invention can meet the lubricating requirements of hydraulic engineeringbearings, and the safety and hygiene requirements in the drinking water industry are met.

Description

technical field [0001] The invention relates to food-grade lubricating grease, more precisely food-grade lubricating grease applied to hydraulic engineering bearings and a preparation method thereof. The preparation process is simple, no pollution to water bodies, excellent water resistance, extreme pressure and anti-wear properties, High and low temperature resistance, rust resistance. Background technique [0002] Water conservancy projects are generally built against rivers or along rivers. This feature determines that their development activities have a more direct impact on the local water environment, especially during the construction period. At present, the lubricating grease used on the bearings of water conservancy engineering machinery is industrial grade, which contains heavy metals and carcinogens. The bearing will be in contact with water during the working process, and the excess grease attached to the bearing will enter the water, causing local and downstrea...

Claims

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Application Information

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IPC IPC(8): C10M169/00C10N30/06C10N30/08C10N30/12C10N40/02C10N10/04C10N10/06C10N20/02
CPCC10M169/00C10M2201/062C10M2207/021C10M2207/1265C10M2207/1285C10M2207/1415C10M2215/224C10M2219/044C10M2223/043C10M2223/047C10N2010/04C10N2020/02C10N2030/06C10N2030/08C10N2030/12C10N2030/26C10N2030/62C10N2040/02C10N2010/06
Inventor 张广辽徐琳张小阳方超群赵文峰耿红磊包锐王志民
Owner CHINA PETROLEUM & CHEM CORP
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