Modified graphene composite namometer coating and preparation method and application thereof

A graphene composite and nano-coating technology, which is applied in coatings, polyester coatings, polyacetal coatings, etc., can solve the problems of poor anti-friction effect and poor wear resistance of resin coatings, and achieve convenient construction and improved resistance. Fastening ability, friction reduction and wear resistance improvement

Inactive Publication Date: 2019-01-04
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a modified graphene composite nano-coating and its preparation method and application, so as to overcome the defects of poor anti-friction effect and poor wear resistance of the resin coating in the prior art

Method used

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  • Modified graphene composite namometer coating and preparation method and application thereof
  • Modified graphene composite namometer coating and preparation method and application thereof
  • Modified graphene composite namometer coating and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Measure 10 mg of graphene oxide and add it to 100 mL of N,N-dimethylformamide, and ultrasonically disperse for 30 minutes to obtain a stable graphene oxide suspension. The suspension was stirred using a magnetic stirrer, and at the same time, 10 mL of hydrazine hydrate and 20 mL of KH550 were slowly added dropwise thereto. The suspension was ultrasonicated at 50° C. for 4 hours, cooled to room temperature after the reaction was completed, washed and dried to obtain modified graphene powder.

[0036] (2) Mix polyaldehyde resin and amino resin with n-butanol and xylene, add amine curing agent, and stir until dissolved. Wherein the polyaldehyde resin and the amino resin account for 3% and 7% of the total mass of the coating respectively by mass, and the mass percentage of the amine curing agent is 10%. The mass percentages of n-butanol and xylene are 30% and 40% respectively.

[0037] (3) Add dropwise 0.2% by mass (based on the total mass of the coating) dispersant t...

Embodiment 2

[0042] (1) Measure 30 mg of graphene oxide and add it to 100 mL of N,N-dimethylformamide, and ultrasonically disperse for 60 minutes to obtain a stable graphene oxide suspension. The suspension was stirred with a magnetic stirrer, and at the same time, 50 mL of octadecylamine and 10 mL of KH560 were slowly added dropwise thereto. The suspension was ultrasonicated at 70° C. for 3 h, cooled to room temperature after the reaction was completed, washed and dried to obtain modified graphene powder.

[0043] (2) Mix epoxy resin and polyurethane resin with n-butanol and isobutyl formate, add amine curing agent, and stir until dissolved. Wherein the epoxy resin and the polyurethane resin account for 20% and 10% by mass of the total mass of the coating respectively, and the mass percent of the amine curing agent is 15%. The mass percentages of n-butanol and isobutyl formate are 35% and 10%, respectively.

[0044] (3) In the step (2), add 1% by mass (based on the total mass of the coati...

Embodiment 3

[0046] (1) Measure 200 mg of graphene oxide and add it to 100 mL of N,N-dimethylformamide, and ultrasonically disperse for 100 min to obtain a stable graphene oxide suspension. The suspension was stirred using a magnetic stirrer, and at the same time, 70 mL of anhydrous ethylenediamine and 10 mL of KH560 were slowly added dropwise thereto. The suspension was ultrasonicated at 80° C. for 7 hours, cooled to room temperature after the reaction was completed, washed and dried to obtain modified graphene powder.

[0047] (2) Mix polyester resin, acrylic resin and phenolic resin with acetone and diisopropyl ether, add amine curing agent, and stir until dissolved. The mass percentages of polyester resin, acrylic resin and phenolic resin in the total coating mass are 5%, 15% and 8% respectively, and the mass percentage of amine curing agent is 12%. The mass percentages of acetone and diisopropyl ether are 20% and 30% respectively.

[0048] (3) Add 0.5% by mass (based on the total ma...

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Abstract

The invention relates to a modified graphene composite namometer coating and a preparation method and application thereof. The coating comprises film-forming resin, a curing agent, an organic solvent,a dispersing agent and nanometer lubricating filler. The preparation method comprises the steps of preparation of graphene oxide suspension liquid, preparation of modified graphene, preparation of aresin solution and preparation of the graphene composite namometer coating. The modified graphene composite namometer coating is extremely high in wear resistance, and the anti-galling capacity of a threaded connector of an oil delivery pipe is greatly improved. The preparation process is simple, the solidification speed is high, the cost is low, convenience is brought to construction, and no pollution to the environment is caused.

Description

technical field [0001] The invention belongs to the field of composite paint and its preparation and application, in particular to a modified graphene composite nano-coating and its preparation method and application. Background technique [0002] In oil extraction operations, the oil pipeline is mainly responsible for transporting crude oil from the underground oil reservoir to the surface oil storage equipment, and its quality stability and reliability are directly related to the success of the entire extraction process. The oil pipelines are mainly connected to each other through threads, and the huge torque during the make-up and break-out process will cause extremely high contact pressure on the thread surface, exceeding the yield limit of the thread material, resulting in plastic deformation, resulting in cold welding of the two thread contact surfaces Phenomenon. The relative movement of the thread contact surface will cause the cold welding part to be torn, resultin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D161/20C09D159/00C09D163/00C09D133/04C09D175/04C09D167/00C09D161/06C09D7/62C09D7/65
CPCC08K2201/011C08L2203/18C08L2205/03C08L2205/035C09D7/62C09D7/65C09D133/04C09D161/20C09D163/00C08L59/00C08L27/18C08K9/06C08K3/042C08L75/04C08L33/12C08L67/00C08L61/06C08L23/12
Inventor 白涛赵博
Owner DONGHUA UNIV
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