研究目的
Investigating the locally controllable surface foaming of polymers induced by multilayer graphene via near-infrared pulsed laser.
研究成果
The study successfully demonstrated a simple and efficient method for locally controllable surface foaming of polymers using a near-infrared pulsed laser induced by multilayer graphene. The optimal foaming performance was achieved with only 0.05 wt % MLG, producing uniform cells with closed-cell structures. The research provides insights into the mechanism of polymer laser foaming and its potential applications in creating 3D patterns on polymer surfaces.
研究不足
The study is limited to the use of polypropylene and multilayer graphene, and the foaming performance may vary with other polymers or graphene types. The laser parameters need precise control to avoid overmelting and ensure uniform foaming.
1：Experimental Design and Method Selection:
The study utilized a near-infrared pulsed laser scanning system for inducing surface foaming on polymers mixed with multilayer graphene (MLG). The laser parameters were controlled to achieve optimal foaming performance.
2：Sample Selection and Data Sources:
Polypropylene (PP) was mixed with MLG at different weight ratios (0.05, 0.1, and 0.2 wt %) and prepared into plates using a twin-screw extruder and injection molding machine.
3：05, 1, and 2 wt %) and prepared into plates using a twin-screw extruder and injection molding machine.
List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: Equipment included a twin-screw extruder, injection molding machine, NIR pulsed laser scanning system (MK-GQ10B, λ = 1064 nm), SEM, XPS, ATR-FTIR, Raman spectrometer, and 3D depth of field microscope. Materials included PP, MLG, ethanol, and other chemicals.
4：Experimental Procedures and Operational Workflow:
The laser foaming experiments were conducted with varying laser power, pulse frequency, and scanning speed. The foaming performance was evaluated based on the appearance and structure of the foamed patterns.
5：Data Analysis Methods:
The foaming performance was analyzed using SEM, XPS, ATR-FTIR, Raman spectroscopy, and 3D microscopy to study the cell structures, carbonization, and oxidation effects.
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