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Información tecnológica

On-line version ISSN 0718-0764


BUITRAGO, Oscar Y; DELGADO, Arnoldo E  and  RODRIGUEZ, Pedro J. Analysis of Bonded Joints Made with (Wood Plastic Composite Sheet) / (Ecological Adhesive) / (Wood Plastic Composite Sheet). Inf. tecnol. [online]. 2017, vol.28, n.2, pp.59-66. ISSN 0718-0764.

An experimental study was performed to measure the resistance to adhesive peel strength of two sheets of similar composition bonded with adhesive. The sheets were made from polyethylene with 32% Telinne monspessulana flour and 5.2% maleated polyethylene. Two types of eco-friendly adhesives were used: aqueous dispersion polyurethane and hot melt ethylene vinyl acetate base. The substrates or surfaces to be bonded from each sheet previously were subjected to mechanical abrasion. Subsequently the surface was treated with vinyl tri (2 -methoxyethoxy) silane, acrylic and diisocyanate primers. The resistance to the separation of both substrates also named as adhesive force of the joint, was determined with the test 180° T-peel adhesión. Chemical treatments increased the peeling strength in the bonded joints with polyurethane water-based, however higher values were obtained by joining the substrates with hot melt adhesive without chemical treatment. The addition of maleate in the wood plastic composite did not improve the efficiency of chemical treatments.

Keywords : wood plastic composite; joint adhesive; low density polyethylene; peel adhesión; primer, adhesive.

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