Publikacje

Abstract:

The method for increasing the shearing strength of adhesive joints in plastics was
investigated. This method uses laser micropatterning of different construction materials to extend
adhesive surfaces. In investigations, Polyethylene Terephthalate (PET) was used. TruMicro 5325c
ultra-short pulse (picosecond pulse) laser and the SCANLAB GALVO scanning head applied in
the research enable ablative removal of the material without the heat-affected zone (HAZ) in the
rest of it. Ultra-short laser pulses (such as picosecond pulses) remove material without melting the
rest of it. The presented method significantly increases the shearing strength of the formed joints
in investigated materials made from plastics, which was proved in the results of laboratory tests.
The laser device parameters used, which are described in this article, have not produced cracks in
the microtreated materials. The research shows that bondings between elements with the
appropriately machined microstructure are characterized by a severalfold increase in the strength
of joints in relation to materials devoid of the microstructure. In addition, this study addresses
practical solutions to the adhesive method used for joining of the polymers used for tests. This
study could be helpful for each application where we have to connect these types of polymers.

POWRÓT

Strona główna > Publikacje

Surface Laser Micropatterning of Polyethylene Terephthalate (PET) to Increase the Shearing Strength of Adhesive Joints