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Preparation of graphene/graphite-like phase carbon nitride composite material and application of composite material as solid lubricant

A graphene, graphene sheet technology, applied in lubricating compositions, additives, petroleum industry and other directions, can solve problems such as no lubricating friction practice, achieve good synergistic effect, high batch stability, simple and feasible preparation method Effect

Inactive Publication Date: 2018-11-13
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently, for graphene / g-C 3 N 4 The research and application of composite materials are still mostly concentrated in the fields of photocatalysis or biosensors, and there is no practice in the field of lubrication and friction.

Method used

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  • Preparation of graphene/graphite-like phase carbon nitride composite material and application of composite material as solid lubricant
  • Preparation of graphene/graphite-like phase carbon nitride composite material and application of composite material as solid lubricant
  • Preparation of graphene/graphite-like phase carbon nitride composite material and application of composite material as solid lubricant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Weigh a certain amount of melamine into the crucible (filling degree 50%); cover the crucible and put it into the muffle furnace, heat up to 600°C at a rate of 3°C / min, keep it warm and calcine for 2 hours; The sample is naturally cooled to room temperature, and the product gC is collected 3 N 4 powder;

[0028] (2) Change g-C 3 N 4 The powder is put into a high-energy ball mill (filling degree 40%), and g-C is reduced by high-energy ball milling method (dry grinding method) 3 N 4 Powder grinding and refining; grinding speed is 260 rpm, grinding time is 90 minutes;

[0029] (3) Refine graphene and g-C 3 N 4 Mix according to the mass ratio of 1:3, and put it into a high-energy ball mill (filling degree 40%), and grind by the high-energy ball milling method (dry milling method) at a grinding speed of 260 rpm and a grinding time of 90 minutes to obtain graphene / g-C 3 N 4 Composite powder.

[0030] According to the foregoing method, the graphene / g-C obtained in this example 3 ...

Embodiment 2

[0032] (1) Weigh a certain amount of melamine into the crucible (filling degree 30%); cover the crucible and put it into the muffle furnace, heat up to 550°C at a rate of 3°C / min, keep it warm and calcine for 4 hours; The sample is naturally cooled to room temperature, and the product gC is collected 3 N 4 powder;

[0033] (2) Change g-C 3 N 4 The powder is put into a high-energy ball mill (filling degree 40%), and g-C is reduced by high-energy ball milling method (dry grinding method) 3 N 4 Powder grinding and refinement; grinding speed is 200 revolutions / min, grinding time is 180 minutes;

[0034] (3) Refine graphene and g-C 3 N 4 Mix at a mass ratio of 1:1 and put it in a high-energy ball mill (filling degree 40%), and grind by high-energy ball milling (dry milling) at a grinding speed of 200 rpm and a grinding time of 180 minutes to obtain graphene / g-C 3 N 4 Composite powder.

[0035] According to the foregoing method, the graphene / g-C obtained in this example 3 N 4 Tribological ...

Embodiment 3

[0037] (1) Weigh a certain amount of melamine into the crucible (filling degree 50%); cover the crucible and put it into the muffle furnace, heat up to 650°C at a rate of 5°C / min, keep warm and calcine for 1.5 hours; The sample is naturally cooled to room temperature, and the product gC is collected 3 N 4 powder;

[0038] (2) Change g-C 3 N 4 The powder is put into a high-energy ball mill (filling degree 30%), and g-C is reduced by high-energy ball milling method (dry grinding method) 3 N 4 Powder grinding and refinement; grinding speed is 300 revolutions / min, grinding time is 60 minutes;

[0039] (3) Refine graphene and g-C 3 N 4 Mix according to the mass ratio of 1:5 and put it in a high-energy ball mill (filling degree 30%), and grind by high-energy ball milling (dry milling method) at a grinding speed of 300 revolutions / minute and grinding time for 60 minutes to obtain graphene / g-C 3 N 4 Composite powder.

[0040] According to the foregoing method, the graphene / g-C obtained in th...

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Abstract

The invention discloses graphene / g-C3N4 composite powder which is obtained through high energy ball milling method milling after the graphene and the g-C3N4 fine powder are mixed according to the massratio of (1:1)-(1:5) and then placed into a high energy ball milling machine. The graphene / g-C3N4 composite powder comprises two phases of the graphene and the g-C3N4, the graphene is in a sheet structure, the g-C3N4 nano-particles are uniformly distributed on the graphene sheet layer, and an obvious heterostructure exists between the graphene and the g-C3N4. Because the obvious heterostructure exists between the graphene and the g-C3N4, the excellent synergistic effect among the components is developed, so that the graphene / g-C3N4 composite powder has low friction coefficient, super long friction durability and excellent lubrication and friction performance, and the graphene / g-C3N4 composite powder has a large application prospect and value in the aspects of lubricant additives, solid lubrication coatings, polymer self-lubricating materials and the like as the new solid lubricant.

Description

Technical field [0001] The invention relates to a graphene / graphite-like carbon nitride (g-C 3 N 4 ) The preparation of composite materials, as a solid lubricant material, is used in lubricating oil additives, solid lubricating coatings, polymer self-lubricating materials, etc. It has the characteristics of low friction coefficient and long wear-resistant life. It belongs to the field of composite materials and solid Lubrication field. Background technique [0002] Mechanical moving parts will face friction and wear problems. Lubricating materials are the most effective means to reduce friction, reduce or avoid wear, improve work efficiency, and extend equipment life. With the development of modern industry and high technology, traditional solids represented by molybdenum disulfide, graphite, and polytetrafluoroethylene under severe service conditions such as heavy loads, high and low temperatures, high and low speeds, special environments, and long operating life Lubricants can...

Claims

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Application Information

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IPC IPC(8): C10M125/00C10N50/08C10N30/06
CPCC10M125/00C10N2030/06C10N2050/08
Inventor 李红轩靳治良刘端端吉利陈磊万宏启周惠娣陈建敏
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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