Biodegradable flame-retardant lubricating grease special for main bearings and preparation method of biodegradable flame-retardant lubricating grease

A biodegradable, main bearing technology, applied in the direction of lubricating compositions, petroleum industry, base materials, etc., can solve the problems of pollution, non-combustibility, safety and fire prevention requirements, non-biodegradable, etc., to achieve less dosage, superior resistance Oxidation, good anti-oxidation effect

Pending Publication Date: 2020-08-11
广饶科力达石化科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the main bearing lubricating grease used in the domestic market is all produced from mineral oil, non-biodegradable, non-combustible and cannot meet the safety and fire prevention requirements, and 180 kg of mineral oil can pollute 45 square kilometers of groundwater

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A biodegradable and flame-retardant special lubricating grease for main bearings, the weight percentage of each component is as follows: methyl oleate 40.0%, polyethylene glycol ether 44.0%, lauryl hydroxystearic acid 6.0%, hydrogenated castor oil 0.5%, Lithium Hydroxide 1.5%, Diphenylamine 0.3%, Dinonylnaphthalene Barium Sulfonate 1.0%, Thiadiazole Derivatives 1.0%, Dialkyl Molybdenum Dithiophosphate 2.0%, Ammonium Thiophosphate 1.0 %, zinc dialkyldithiophosphate 0.2%, melamine cyanurate 2.5%.

[0024] Among them, methyl oleate and polyethylene glycol ether are used as diluents; lauryl hydroxystearic acid and hydrogenated castor oil are used as thickeners; lithium hydroxide is used as saponification agent; diphenylamine is used as antioxidant; barium acid as an anti-corrosion agent; thiadiazole derivatives as a metal deactivator; dialkyl molybdenum dithiophosphate as an oily agent; Zinc phosphate is used as anti-corrosion, cleaning and dispersing agent; melamine cyanu...

Embodiment 2

[0030] A biodegradable and flame-retardant special lubricating grease for main bearings, the weight percentage of each component is as follows: methyl oleate 42.2%, polyethylene glycol ether 45.0%, lauryl hydroxystearic acid 5.5%, hydrogenated castor oil 1.0%, Lithium Hydroxide 1.0%, Diphenylamine 0.2%, Dinonylnaphthalene Barium Sulfonate 0.5%, Thiadiazole Derivatives 0.8%, Dialkyl Molybdenum Dithiophosphate 1.0%, Ammonium Thiophosphate 0.7% %, zinc dialkyldithiophosphate 0.1%, melamine cyanurate 2.0%.

[0031] The present invention also provides a preparation method of a biodegradable flame-retardant main bearing special lubricating grease, comprising the following steps:

[0032] S1): Start stirring, add 40% of methyl oleate and polyethylene glycol ether, start the heating device at 90°C for 10 minutes, put lauryl hydroxystearic acid, hydrogenated castor oil, lithium hydroxide, into the reaction kettle , 120 ° C saponification reaction 1.5h. Afterwards, the temperature was...

Embodiment 3

[0036] A biodegradable and flame-retardant special lubricating grease for main bearings, the weight percentage of each component is as follows: methyl oleate 44.0%, polyethylene glycol ether 42.0%, lauryl hydroxystearic acid 5.0%, hydrogenated castor oil 0.6%, lithium hydroxide 1.7%, diphenylamine 0.1%, dinonyl naphthalene sulfonate barium 1.5%, thiadiazole derivatives 0.5%, dialkyl molybdenum dithiophosphate 0.8%, thiophosphate ammonium salt 0.5% %, zinc dialkyl dithiophosphate 0.3%, melamine cyanurate 3.0%.

[0037] The present invention also provides a preparation method of a biodegradable flame-retardant main bearing special lubricating grease, comprising the following steps:

[0038] S1): Start stirring, add 40% of methyl oleate and polyethylene glycol ether, start the heating device at 100°C for 10 minutes, put lauryl hydroxystearic acid, hydrogenated castor oil, lithium hydroxide, into the reaction kettle , 130 ° C saponification reaction 1.5h. After that, the tempera...

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PUM

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Abstract

The invention discloses a biodegradable flame-retardant lubricating grease special for main bearings. The biodegradable flame-retardant lubricating grease comprises, by weight percentage: 40.0-44.0% of methyl oleate, 42.0-45.0% of polyethylene glycol ether, 5.0-6.0% of 12-hydroxystearic acid, 0.5-1.0% of hydrogenated castor oil, 1.0-1.7% of lithium hydroxide, 0.1-0.3% of diphenylamine, 0.5-1.5% ofbarium dinonyl naphthalene sulfonate, 0.5-1.0% of a thiadiazole derivative, 0.8-2.0% of molybdenum oxide dialkyl dithiophosphate, 0.5 to 1.0% of ammonium phosphorothioate, 0.1-0.3% of zinc dialkyl dithiophosphate and 2.0-3.0% of melamine cyanurate. The lubricating grease has good extreme pressure wear resistance, water spraying resistance, mechanical stability, oxidation and corrosion resistance,biodegradability and combustion resistance, the requirement of a shield tunneling machine for safe production, lubrication and operation of a main shaft during underground tunneling of cities, riversand lakes is met, and accidents are avoided.

Description

technical field [0001] The invention relates to the technical field of lubricating materials for equipment, in particular to a biodegradable flame-retardant special lubricating grease for main bearings and a preparation method thereof. Background technique [0002] The development level of shield technology reflects the advanced level of a country's mechanized industry. At present, developed countries in the world have widely adopted fully mechanized construction technology for underground tunnels. The key to the application of shield technology is the use of shield machines. The most important construction machine for excavating tunnels by the shield method is the shield machine. [0003] The special grease for the main bearing is also responsible for the extreme pressure resistance, anti-wear, anti-oxidation, anti-corrosion, and high and low temperature lubrication needs of the main bearing during operation. Mission not to burn. [0004] At present, the main bearing lubr...

Claims

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Application Information

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IPC IPC(8): C10M111/04C10M169/00C10N50/10C10N40/02C10N30/06C10N30/10C10N30/12
CPCC10M111/04C10M169/00C10M2207/1265C10M2207/1285C10M2207/2815C10M2209/1045C10M2209/1085C10M2215/064C10M2215/222C10M2219/044C10M2219/106C10M2223/045C10M2223/065
Inventor 孙柏杨
Owner 广饶科力达石化科技有限公司
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