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A kind of sealing agent for HVOF to prepare Fe-based amorphous coating

An amorphous coating and sealing agent technology, applied in coatings, anti-corrosion coatings, fire-retardant coatings, etc., to achieve the effect of solving porosity and crystallization, strong insulation and adhesion

Inactive Publication Date: 2019-11-29
中国电建集团江西装备有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is, in order to solve the problem of coating porosity in the coating prepared from the existing Fe-based amorphous alloy, the present invention proposes a kind of sealing agent for HVOF to prepare Fe-based amorphous coating

Method used

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  • A kind of sealing agent for HVOF to prepare Fe-based amorphous coating
  • A kind of sealing agent for HVOF to prepare Fe-based amorphous coating
  • A kind of sealing agent for HVOF to prepare Fe-based amorphous coating

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Embodiment Construction

[0021] The specific embodiment of the present invention is as figure 1 shown.

[0022] This embodiment is achieved by adding 25 parts of nanometer Al 2 o 3 , Ultrasonic dispersion is uniform, add 10 parts of mica filler, 5 parts of dispersant (sodium polyacrylate) and 5 parts of film-forming aid, and then add an appropriate amount of anhydrous ethanol solvent to adjust the viscosity, and then put them together in a high-speed disperser, and disperse evenly After filtering, sealing and standing still, the required sealing agent is prepared.

[0023] Before sealing, the coating sample is pretreated and ultrasonically cleaned to ensure that the surface of the coating is clean and free of stains. Then, an appropriate amount of curing agent is added to the sealing agent, and the coating to be sealed is immersed in the sealing agent. After dipping for 20 minutes, make the sealing agent fully penetrate into the pores of the coating, then place the sample at room temperature to dry...

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PUM

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Abstract

The invention relates to a hole sealing agent for preparing an Fe-based amorphous coating by HVOF. The hole sealing agent is prepared from tetrafluoroethylene, absolute ethyl alcohol, nano-scale Al2O3, mica filler, a dispersing agent and a film forming aid. The preparation method comprises the following steps: (1) mixing 50 parts of polytetrafluoroethylene and the absolute ethyl alcohol according to a volume ratio of 1 to 2, adding 25 parts of the nanoscale Al2O3, and ultrasonically and uniformly dispersing; (2) in an ultrasonically-dispersed mixture, adding 10 parts of the mica filler, 5 parts of the dispersing agent and 5 parts of the film forming aid, adding an appropriate amount of an absolute ethyl alcohol solvent to adjust the viscosity; and (3) placing all materials in the previous step into a high-speed dispersing machine, uniformly dispersing, filtering, sealing, standing, and preparing the needed hole sealing agent. By adopting a hole sealing method, the porosity and crystallization problem can be effectively solved.

Description

technical field [0001] The invention relates to a sealing agent for preparing Fe-based amorphous coatings by HVOF, belonging to the technical field of application of amorphous materials. Background technique [0002] The coating made of iron-based amorphous alloy can expand the application of iron-based amorphous alloy, but the microstructure of the coating will affect the coating performance. Due to the advantages of wide application range, simple operation and low cost, the sealing treatment technology has become the most commonly used method to reduce the porosity of the coating, thereby improving the corrosion resistance of the coating. Pore ​​sealing treatment refers to the use of brushes or equipment to soak the sealing agent into the pores and fill them into the pores. While filling the pores to strengthen the interior, the surface is also smoothed, and the excess sealing agent becomes a coating. Therefore, the sealing agent must have low viscosity and good permeabil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D127/18C09D5/08C09D7/61
CPCC08K2003/2227C08K2201/011C08L2201/08C09D5/08C09D5/18C09D127/18C08L33/02C08K3/22C08K7/00
Inventor 聂贵茂钟菁王善林胡文龙鲁煌黄诚林凯明聂江林章磊黄东方
Owner 中国电建集团江西装备有限公司
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