Graphene modified laser absorption layer coating and coating method thereof

A graphene modification and laser absorption technology, which is applied in the field of surface treatment of parts, can solve problems such as low efficiency, poor quality uniformity, and poor coating quality of laser absorption layers, so as to reduce damage rate and improve laser burn resistance Erosion ability, the effect of improving the utilization rate of laser energy

Active Publication Date: 2021-07-09
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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Problems solved by technology

[0003] The purpose of the invention is: to propose a graphene-modified laser absorbing layer coating and its coating method, which can solve the difficult problems of poor coating quality, low efficiency, and poor quality uniformity of the laser

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  • Graphene modified laser absorption layer coating and coating method thereof
  • Graphene modified laser absorption layer coating and coating method thereof
  • Graphene modified laser absorption layer coating and coating method thereof

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[0036] Example 1

[0037] A graphene modified laser absorbing layer coating, which is mainly composed of a polyurethane resin, a black excipient, a functional aid, and deionized water. Among them, polyurethane resins (50%), black excipients (20%), functional auxiliaries (10%), and deionized water (20%), all of which are mass percent; the polyurethane resin is aqueous emulsion, and the solid content is 10% (quality). Percentage); black excipients are carbon black comprising graphene powder, graphene content is 1.0% (mass percent); functional aid is sodium stearate.

[0038] The step of coating the coating of the graphene modified laser absorbing layer coating is as follows:

[0039] (1) Part surface cleaning: use alcohol ultrasound cleaning, clean the surface of the part to be laser impact;

[0040] (2) Preparation of the coating: The graphene powder is added to deionized water to form a graphene slurry, and then the carbon black is uniformly dispersed in the graphe slurry, and the...

Example Embodiment

[0043] Example 2

[0044] The content of the polyurethane resin, black excipient, functional auxiliaries, and deionized water is X, Y, Z and R, respectively, wherein X = 70%, y = 15%, Z = 10%, R = 5% , All of the quality percentage. Further, the polyurethane resin is aqueous emulsion, the solid content is 60% (mass percent); the black excipient is an iron-based graphite pulverized iron black and graphene content is 5.0% (mass percent);

[0045] The step of coating the coating of the graphene modified laser absorbing layer coating is as follows:

[0046] (1) Part surface cleaning: Wipe the way to wipe the gauze, clean the surface of the part to be laser impact;

[0047] (2) Preparation of the coating: Add a water-based graphene slurry to deion water to form a graphene slurry, and then the iron oxide black is uniform in the grapse smear, and then the mixed slurry is added to the aqueous polyurethane resin emulsion. High speed dispersion is uniform, then sodium oleate is added, and t...

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Abstract

The invention belongs to the technical field of part surface treatment, and relates to a graphene modified laser absorption layer coating and a coating method thereof. The coating is mainly composed of polyurethane resin, a black auxiliary material, a functional auxiliary agent and deionized water. After graphene modification, higher amplitude and deeper surface residual compressive stress distribution are generated on the surface of the part. The laser absorption layer coating is coated on the surface of a part in a high-pressure gas driven spraying mode, a coating with uniform thickness is obtained on the surface of a complex part after drying, the binding force between the coating and the part is good, and the coating can be removed through manual stripping after laser shock is completed. The method has the advantages of being high in coating efficiency, good in quality reliability, high in removal efficiency and the like, and machining and mass production of complex parts are facilitated.

Description

technical field [0001] The invention belongs to the technical field of parts surface treatment, and relates to a graphene-modified laser absorbing layer coating and a coating method thereof. Background technique [0002] Laser shock strengthening is an advanced surface strengthening technology, which uses the mechanical effect of high-energy plasma shock waves induced by lasers to generate plastic deformation layers and residual compressive stress layers on the surface of parts, thereby improving the fatigue performance of parts. Laser pulses are not directly irradiated on the surface of the part, but indirectly irradiated on the laser absorbing layer on the surface of the part. The absorbing layer has high laser energy absorption rate, heat insulation and excellent comprehensive mechanical properties. At present, the commonly used laser absorbing layer is black tape or aluminum foil, which is manually pasted on the surface of the part. This method has the advantages of sim...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D7/61B05D1/02B05D7/24
CPCC09D175/04C09D7/61B05D7/24B05D1/02B05D2503/00B05D2301/00C08K2003/2275C08K3/042C08K3/04C08K3/22
Inventor 罗学昆杨瑞王欣王强马世成许春玲宇波于洋
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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