Method for treating surface of carbon fiber composite material

Patent metadata

Field	Value
Publication number	US-10570265-B2
Application number	US-201816111817-A
Country	US
Kind code	B2
Filing date	Aug 24, 2018
Priority date	Aug 25, 2017
Publication date	Feb 25, 2020
Grant date	Feb 25, 2020

Abstract

The disclosure provides a method for treating a surface of a carbon fiber composite material, comprising the steps of: (1) pretreating a carbon fiber reinforced resin-based composite material; (2) spraying transparent powder to the surface of the carbon fiber reinforced resin-based composite material and curing it; (3) polishing the surface of the carbon fiber reinforced resin-based composite material after the transparent powder is cured; (4) spraying transparent powder to the surface of the carbon fiber reinforced resin-based composite material after the transparent powder thereon is cured and curing it; (5) polishing, cleaning and baking; and (6) spraying a clear lacquer to the surface of the carbon fiber reinforced resin-based composite material after the transparent powder is cured and curing it.

First claim

The invention claimed is:

1. A method for treating a surface of a carbon fiber reinforced resin-based composite material, comprising the steps of:
(1) pretreating the carbon fiber reinforced resin-based composite material, comprising:
polishing the surface of the carbon fiber reinforced resin-based composite material with 800-mesh sandpaper,
cleaning the surface of the carbon fiber reinforced resin-based composite material with deionized water, and
baking the surface of the carbon fiber reinforced resin-based composite material at 60-90° C. for 30-50 minutes;

(2) spraying a first transparent powder on the surface of the carbon fiber reinforced resin-based composite material obtained from step (1) and curing the first transparent powder, the first transparent powder having a thickness of 40-60 microns;
(3) polishing the surface of the carbon fiber reinforced resin-based composite material after the first transparent powder is cured by using 800-mesh sandpaper,
cleaning the surface of the carbon fiber reinforced resin-based composite material after the first transparent powder is cured with deionized water, and
baking the surface of the carbon fiber reinforced resin-based composite material after the first transparent powder is cured at 60-90° C. for 30-50 minutes;
(4) spraying a second transparent powder on the surface of the carbon fiber reinforced resin-based composite material obtained from step (3) and curing the second transparent powder, the second transparent powder having a thickness of 60 to 80 microns;
(5) polishing the surface of the carbon fiber reinforced resin-based composite material after the second transparent powder is cured with 800-mesh sandpaper,
cleaning the surface of the carbon fiber reinforced resin-based composite material after the second transparent powder is cured with deionized water, and
baking the surface of the carbon fiber reinforced resin-based composite material after the second transparent powder is cured at 60-90° C. for 30-50 minutes; and
(6) spraying a clear lacquer on the surface of the carbon fiber reinforced resin-based composite material obtained from step (5) and curing the clear lacquer, the clear lacquer having a thickness of 15-20 microns.

2. The method according to claim 1 , wherein in step (1), the 800-mesh sandpaper is 800-mesh sponge sandpaper, and the baking is carried out by using infrared heating.

3. The method according to claim 1 , wherein in step (1), the surface of the carbon fiber reinforced resin-based composite material is baked at 80° C. for 40 minutes after being cleaned with the deionized water.

4. The method according to claim 1 , wherein in step (2), the first transparent powder is acrylic transparent powder.

5. The method according to claim 1 , wherein in step (3), the surface of the carbon fiber reinforced resin-based composite material is baked at 80° C. for 40 minutes after being cleaned with the deionized water.

6. The method according to claim 1 , wherein in step (3), the 800-mesh sandpaper is 800-mesh sponge sandpaper, and the baking is carried out by using infrared heating.

7. The method according to claim 1 , wherein in step (4), the second transparent powder is acrylic transparent powder.

8. The method according to claim 1 , wherein in step (5), the 800-mesh sandpaper is 800-mesh sponge sandpaper, and the baking is carried out by using infrared heating.

9. The method according to claim 1 , wherein in step (6), the clear lacquer is acrylic clear lacquer.

Assignees

• Citic Dicastal Co Ltd

Inventors

• Cao Jianqiang
• Xiao Ling
• A Lateng
• Zhang Wei
• Zhang Donghui
• Xie Gaowei
• Ling Kai
• Zhang Yanping

Classifications

• B05D1/12

  Applying particulate materials (B05D1/06, B05D1/10 take precedence) · CPC title

• C08J2433/04

  esters · CPC title

• B05D3/0254

  After-treatment · CPC title

• C08J2300/00

  Characterised by the use of unspecified polymers · CPC title

• B05D2201/02

  Polymeric substrate · CPC title