Effect of carbon nanotube amount on polyethylene welding process induced by laser source |
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| Authors: | A M Visco N Campo L Torrisi and F Caridi |
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| Institution: | (1) Center for Advanced Sensor Technology and Department of Chemical and Biochemical Engineering, University of Maryland, Baltimore County, 5200 Westland blvd., Baltimore, MD 21227, USA;(2) Department of Civil and Environmental Engineering, University of Maryland, Baltimore County, 5200 Westland blvd., Baltimore, MD 21227, USA;(3) Division of Biology, Office of Science and Engineering, FDA, Silver Spring, MD 20993, USA;(4) National Cancer Institute, Bethesda, MD 20892, USA; |
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| Abstract: | This paper reports a study of the laser welding of polymeric joints composed by two polyethylene sheets, one pristine and
the other filled by carbon nanotubes. In order to know the material modifications occurring during the laser exposure and
the phenomena that seal the polymeric sheets, the physical, chemical and mechanical features of the welded area were analysed.
The mechanical resistance of the welded joint and the structural changes of the polymer were checked by mechanical shear tests,
absorption coefficient measurements, calorimetric analyses, mass quadrupole spectrometry and electron microscopy. The welding
effectiveness was investigated as a function of the filler concentration. |
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