Journal
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
Volume 252, Issue -, Pages 813-820Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jmatprotec.2017.10.051
Keywords
Laser materials processing; Polymers; Fiber lasers; Infrared and far-infrared lasers
Funding
- Natural Sciences and Engineering Research Council of Canada (NSERC) [IRCPJ469414-13]
- Canada Foundation for Innovation (CFI) [5180]
- Fonds de recherche du Quebec-Nature et technologies (FRQNT) [144616]
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In this experimental study, we investigate polymer ablation with a novel fiber laser source emitting at 3.44 mu m, a wavelength resonant with the C-H bond fundamental stretching frequency of widespread polymer materials. The wavelength of the laser and the heating regime in the material are found to play key roles in the ablation process of polymers. We compare the results from two series of experiments performed, with both the 3.44 mu m fiber laser and a CO2 laser at 10.6 mu m, on three common polymers: poly(methyl methacrylate), polypropylene and polyethylene. The ablation thresholds, its efficiency as well as the morphology of laser-induced grooves are evaluated experimentally. Polymer processing with mid-IR fiber lasers could be applied to a wide variety of compositions and has a strong potential for applications.
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