Device and method for laser cleaning and surface modification composite processing of carbon fiber composite materials
A composite material and laser cleaning technology, applied in cleaning methods and tools, laser welding equipment, metal processing equipment, etc., can solve problems such as laser cleaning of unseen carbon fibers, shorten operating time, improve processing efficiency, and facilitate bonding Effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0057] The carbon fiber / epoxy resin composite material is selected as the material 7 to be treated, which is composed of T300 carbon fiber and epoxy resin 6 by hot pressing. Two adjacent layers of carbon fibers 10 are vertically stacked and arranged, and the adjacent two layers of carbon fibers are bonded and covered by epoxy resin layers, such as image 3 shown. Place the material 7 to be cleaned with the existing epoxy resin 6 on the three-dimensional mobile platform 8, and control the three-dimensional mobile platform control panel 9 through the computer 1, so that the material to be cleaned 7 is located at the focal length of the focusing lens 5, and the pulse beam converges on the three-dimensional mobile platform to be cleaned. The upper surface of material 7. By scanning the vibrating mirror 4, the direction of the laser beam is adjusted to be perpendicular to the cleaning surface of the material 7 to be cleaned. The spot diameter of the laser light is D=50 μm, the re...
Embodiment 2
[0060] The preparation of the material is the same as in Example 1, the laser power is adjusted to 8W, and the SEM image of the material 7 to be cleaned after laser cleaning is as follows Image 6 shown. The resin is cleaned, the carbon fiber is slightly broken, and the spot area on the carbon fiber has a concave-convex shape, which is conducive to the "locking" effect between the substances during bonding, and increases the surface roughness to a certain extent, which is more conducive to the glue of the material catch. That is, after 8W laser cleaning, the epoxy resin cannot be cleaned, and it also has a modification effect on the surface of the carbon fiber.
Embodiment 3
[0062] The material preparation is the same as in Example 1, and the laser power is adjusted to 16W. SEM images after laser cleaning Figure 7 shown. At this time, it is in the stage of laser cleaning and composite modification. The laser power quickly gasifies and decomposes the resin, and most of the energy acts on the carbon fiber. Under the influence of heat accumulation and thermal stress, the top layer of carbon fiber breaks, and the heat absorbed by the carbon fiber is transferred to the space between the carbon fibers. The melting and boiling point of the resin is lower than that of carbon fiber, and the absorbed energy makes it ablate and decompose, so that the gap between carbon fibers increases significantly, which is more conducive to the penetration and hooking of the adhesive during bonding.
PUM
| Property | Measurement | Unit |
|---|---|---|
| laser power | aaaaa | aaaaa |
| diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More