Ultra High MolecularWeight Poly Ethylene (UHMWPE) is a polymer with high performance features. It is typically transparent to the IR laser irradiation because of intrinsic structure. Thus, it needs of an adsorbent material, homogeneously distributed within it to generate absorbent bands in the IR regions. Silver nanoparticles, produced by laser ablation, can be added in different amount (1–6 weight %). These resulting nanocomposites have been prepared by a chemical mixing in an ultra-sonication bath. Sheets of nanocomposite plastic, prepared by a thermoforming process, were then sealed by means of a diode laser operating at 970 nm wavelength in continuum, with a maximum energy of 100 mJ and for a time of 60 seconds. Optical absorption features of the materials and the mechanical strength evaluation of the welded joints have been checked and discussed.

Laser welding of polymeric nanocomposites filled with silver nanoparticles produced by laser ablation

Scolaro, C.
Primo
Writing – Review & Editing
;
Visco, A.
Penultimo
Conceptualization
;
Torrisi, L.
Ultimo
Methodology
2020-01-01

Abstract

Ultra High MolecularWeight Poly Ethylene (UHMWPE) is a polymer with high performance features. It is typically transparent to the IR laser irradiation because of intrinsic structure. Thus, it needs of an adsorbent material, homogeneously distributed within it to generate absorbent bands in the IR regions. Silver nanoparticles, produced by laser ablation, can be added in different amount (1–6 weight %). These resulting nanocomposites have been prepared by a chemical mixing in an ultra-sonication bath. Sheets of nanocomposite plastic, prepared by a thermoforming process, were then sealed by means of a diode laser operating at 970 nm wavelength in continuum, with a maximum energy of 100 mJ and for a time of 60 seconds. Optical absorption features of the materials and the mechanical strength evaluation of the welded joints have been checked and discussed.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11570/3150942
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