Resumo

SEDANO-MENDOZA, Miriam; AVILA-CALDERON, Luz Elena Alfonsina  e  JARDON-MADRIGAL, Guillermo. Technical analysis of three commercial adhesives for the furniture industry. Ing. invest. y tecnol. [online]. 2021, vol.22, n.4, e1878.  Epub 31-Jan-2022. ISSN 2594-0732.  https://doi.org/10.22201/fi.25940732e.2021.22.4.029.

The aim of this work was to found out the mechanical strength of three commercial adhesives (Comex brand, Resistol 850 and Resistol 950 brand) usually used in traditional furniture industries located in the eastern region of the state of Michoacán. The experimental model was adjusted as much as possible to what was done in most of the companies visited. The mechanical strength test was made according to the ASTM D-5751 standard and three pressing times were measured (according to furniture companies performance). The physicochemical properties of the comercial adhesives were determined: solid content, viscosity, pH and density. Both the mechanical strength and the physicochemical properties adhesives results were compared to obtain their correlation. For the three pressing times, the highest values of the mechanical strenght were presented by the Resistol 850 adhesive and the lowest values by Comex adhesive. It was found, with a 95 % reliability (P> 0.05), the variances of the populations of mechanical strength in the three types of adhesive are different by at least one value for the pressing times of 6 and 8 h. The results of the physicochemical tests (pH, density and solids) showed that just the Resistol 850 adhesive was within the ranges reported, while the viscosity values were within the ranges reported for the three adhesives. For the three adhesives studied, a correlation of 0.9695 between the solid content and the mechanics strength was found.

Palavras-chave : Wood adhesives; mechanical strength; pressing; physicochemical properties; furniture industry.

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