研究目的
Investigating the mechanism of paint removal using pulsed laser technology, including the analysis of chemical and physical changes on the paint surface and the formation of new compounds.
研究成果
The pulsed laser paint removal process involves complex physical and chemical changes, including bond cleavage and rearrangement, leading to the formation of new organic and complex compounds. The mechanism is primarily a chemical bond breaking combustion method, with additional effects from plasma impact. The study provides a theoretical basis for the industrial application of laser paint removal technology.
研究不足
The study focuses on a specific type of paint and substrate, and the results may not be directly applicable to other materials. The complexity of the laser paint removal mechanism may require further investigation to fully understand all involved processes.
1：Experimental Design and Method Selection:
A finite element model was created using COMSOL Multiphysics software to analyze the temperature field during the cleaning process. Laser paint removal behavior was investigated using a fiber laser.
2：Sample Selection and Data Sources:
The base material used was LY12 aluminum alloy with a polyacrylate resin base paint layer. Samples were analyzed before and after laser cleaning.
3：List of Experimental Equipment and Materials:
Fiber laser, Fourier transform infrared spectroscopy (FT-IR, Nicolet 5700), X-ray photoelectron spectroscopy (XPS, ESCALAB 250xi), and scanning electron microscopy (SEM).
4：Experimental Procedures and Operational Workflow:
The paint layer was scanned once with the laser to remove the paint layer. The surface was then analyzed using FT-IR, XPS, and SEM.
5：Data Analysis Methods:
Changes in functional groups and chemical valence were analyzed using FT-IR and XPS. Particle morphology and surface morphology were analyzed using SEM.
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