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-com

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0022] Example one:

[0023] A biodegradable and flame-retardant special grease for main bearings. The weight percentages of its components are as follows: 40.0% methyl oleate, 44.0% polyethylene glycol ether, 6.0% dodecylhydroxystearic acid, hydrogenated castor oil 0.5%, lithium hydroxide 1.5%, diphenylamine 0.3%, barium dinonylnaphthalenesulfonate 1.0%, thiadiazole derivative 1.0%, molybdenum dialkyldithiophosphate 2.0%, ammonium thiophosphate 1.0% %, 0.2% zinc dialkyl dithiophosphate, 2.5% melamine cyanurate.

[0024] Among them, methyl oleate and polyethylene glycol ether are used as diluents; dodecylhydroxystearic acid and hydrogenated castor oil are used as thickeners; lithium hydroxide is used as saponification agent; diphenylamine is used as antioxidant; dinonyl naphthalene sulfonate Barium acid as anti-corrosion agent; Thiadiazole derivatives as metal deactivator; Dialkyl dithiophosphoric molybdenum as oily agent; Phosphoric acid amine salt as antiwear agent; Dialkyl disu...

Example Embodiment

[0029] Embodiment two:

[0030] A biodegradable and flame-retardant special grease for main bearings. The weight percentages of its components are as follows: methyl oleate 42.2%, polyethylene glycol ether 45.0%, dodecylhydroxystearic acid 5.5%, hydrogenated castor oil 1.0%, lithium hydroxide 1.0%, diphenylamine 0.2%, barium dinonylnaphthalenesulfonate 0.5%, thiadiazole derivative 0.8%, dialkyldithiophosphoric acid molybdenum 1.0%, thiophosphate amine salt 0.7 %, 0.1% of zinc dialkyl dithiophosphate, and 2.0% of melamine cyanurate.

[0031] The present invention also provides a method for preparing the biodegradable and flame-retardant special grease for main bearings, which includes the following steps:

[0032] S1): Start stirring, put 40% of each of methyl oleate and polyglycol ether, start the heating device at 90°C for 10 minutes, put dodecylhydroxystearic acid, hydrogenated castor oil, and lithium hydroxide into the reactor , 120 ℃ saponification reaction 1.5h. Then the temp...

Example Embodiment

[0035] Example three:

[0036] A biodegradable and flame-retardant special grease for main bearings. The weight percentages of its components are as follows: methyl oleate 44.0%, polyglycol ether 42.0%, dodecanoic acid 5.0%, hydrogenated castor oil 0.6%, lithium hydroxide 1.7%, diphenylamine 0.1%, barium dinonylnaphthalenesulfonate 1.5%, thiadiazole derivative 0.5%, molybdenum dialkyldithiophosphate 0.8%, ammonium thiophosphate 0.5% %, 0.3% zinc dialkyl dithiophosphate, 3.0% melamine cyanurate.

[0037] The present invention also provides a method for preparing the biodegradable and flame-retardant special grease for main bearings, which includes the following steps:

[0038] S1): Start stirring, put 40% of each of methyl oleate and polyglycol ether into it, start the heating device at 100°C for 10 minutes, put dodecylhydroxystearic acid, hydrogenated castor oil, and lithium hydroxide into the reactor , 130 ℃ saponification reaction 1.5h. Then the temperature was raised to 190°C, ...

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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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