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Preparation of phthalocyanine lanthanum-modified graphene composite extreme pressure antiwear agent and lubricating grease with antiwear agent

An extreme pressure anti-wear agent, graphene technology, applied in lubricating compositions, additives, petroleum industry and other directions, can solve the problem that lubricating grease is difficult to meet the requirements of construction machinery, and achieve good extreme pressure and anti-wear performance, low friction coefficient , The effect of improving wear resistance

Inactive Publication Date: 2018-07-06
SHANDONG YUANGEN PETROLEUM CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the lubricating grease commonly used in the market is difficult to meet the above requirements of construction machinery

Method used

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  • Preparation of phthalocyanine lanthanum-modified graphene composite extreme pressure antiwear agent and lubricating grease with antiwear agent
  • Preparation of phthalocyanine lanthanum-modified graphene composite extreme pressure antiwear agent and lubricating grease with antiwear agent
  • Preparation of phthalocyanine lanthanum-modified graphene composite extreme pressure antiwear agent and lubricating grease with antiwear agent

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Effect test

Embodiment 1

[0015] Embodiment 1 (graphene composite extreme pressure antiwear agent modified by lanthanum cyanine)

[0016] The invention provides a preparation method of a graphene composite extreme pressure antiwear agent modified by lanthanum phthalocyanine, which specifically comprises the following steps: firstly, the preparation of carboxylated graphene oxide, taking 100 milliliters of 1 mg / ml graphene oxide and uniformly dispersing Add 6.66ml of hydrobromic acid, stir vigorously at room temperature for 12 hours, then add 2g of oxalic acid, continue the reaction for 4 hours, wash with deionized water until neutral, and then use DMF to make 1mg / ml carboxylation oxidation Graphene dispersion, continuous ultrasonic dispersion for 24 hours; then prepare the graphene composite modified by lanthanum phthalocyanine, get 20 milliliters of the DMF homogeneous dispersion of 1mg / ml carboxylated graphene oxide prepared above, 70mg tetraaminolanthanum phthalocyanine, 0.0366 g of EDC, 0.0233 g of...

Embodiment 2

[0018] The present invention utilizes the lanthanum phthalocyanine modified graphene composite extrusion antiwear agent prepared in Example 1 to provide a grease containing the antiwear agent, specifically including 9-13.5 parts of lauryl hydroxystearic acid, 3 -4.5 parts of sebacic acid, 2.6-3.9 parts of lithium hydroxide, 0.5-1 part of tackifier, 0.5-1 part of antioxidant additive, 1-3 parts of graphene composite pole modified by lanthanum phthalocyanine Pressure and anti-wear agent, 1-3 parts of metal deactivator, 0.1-0.3 parts of multifunctional agent, 50-68 parts of base oil, 15-25 parts of thickener calcium sulfonate, using the above ingredients, first Add base oil into the reaction kettle, then add lauryl hydroxystearic acid, sebacic acid, and lithium hydroxide into the reaction kettle in sequence to heat and stir, stir for 2-3 hours, and the heating temperature is 60-80°C; then Add the mixed liquid heated and stirred by the reaction kettle to the quenching mixer for co...

Embodiment 3

[0020] 11.4 parts of lauryl hydroxystearic acid, 4 parts of sebacic acid, 3 parts of lithium hydroxide, 0.8 parts of tackifier, 0.6 parts of antioxidant additive, 2 parts of extreme pressure and antiwear agent of graphene composite modified by lanthanum phthalocyanine, 1.2 parts of metal deactivator, 0.2 parts of multifunctional agent, 57.3 parts of base oil, 20 parts of thickener calcium sulfonate.

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Abstract

The invention belongs to the field of lubricating grease special for engineering machinery, and particularly relates to preparation of a phthalocyanine lanthanum-modified graphene composite extreme pressure antiwear agent and the lubricating grease with the antiwear agent. The preparation comprises the following steps: carrying out a reaction between graphene oxide and hydrobromic acid, adding oxalic acid, adjusting the mixture to be neutral, preparing carboxylated graphene oxide dispersion liquid at a concentration of 1 mg / ml by using DMF, heating the carboxylated graphene oxide dispersion liquid in vacuum at 90 DEG C together with lanthanum tetramine phthalocyanine, EDC (dichloroethane) and DMAP (dimethylaminopyridine), after the reaction, adding hydrazine hydrate for reaction, cooling the mixture to obtain a black solid which is the phthalocyanine lanthanum-modified graphene composite extreme pressure antiwear agent, and then preparing the lubricating grease from the phthalocyaninelanthanum-modified graphene compound extreme pressure antiwear agent. The lubricating grease has a relatively low friction coefficient and high extreme pressure antiwear property; after the product isput into production, the high-quality lubricating grease can be provided for production of the lubricating grease special for domestic engineering machinery.

Description

technical field [0001] The invention belongs to the field of special lubricating grease for engineering machinery, and in particular relates to the preparation of a graphene composite extreme pressure antiwear agent modified by lanthanum phthalocyanine and the lubricating grease containing the antiwear agent. Background technique [0002] The role of construction machinery in highway construction and maintenance cannot be replaced by manpower. How to improve the efficiency of machinery and prolong the economic life of machinery is a common topic for equipment managers and operators. However, the working environment of construction machinery is mostly harsh, the frequency of use is high, and the friction between parts is frequent and the wear is serious. No matter in the working environment or the change of workload, the construction machinery grease is quite different from the general equipment grease. At present, the lubricating grease commonly used in the market is diffic...

Claims

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Application Information

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IPC IPC(8): C10M125/02C10M169/00C10N30/06C10N30/12C10N50/10
CPCC10M125/02C10M169/00C10M2201/14C10M2207/126C10M2207/127C10M2219/0445C10N2030/06C10N2030/12C10N2050/10C10N2010/02C10N2010/04
Inventor 徐金玲袁俊洲何茂伟纪祥娟乔良
Owner SHANDONG YUANGEN PETROLEUM CHEM
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