Evaluación del desempeño mecánico de laminados producidos a partir de resinas base de fenol-formaldehído modificadas con lignosulfonato de sodio

TAVERNA M; OLLEARO R; MORAN J; FRONTINI P; NICOLAU V; ESTENOZ D

Iguazú

Congreso; 13er Congreso Internacional en Ciencia y Tecnología de Metalurgia y Materiales & Simposio Internacional sobre materiales lignocelulósicos; 2013

Sociedad Argentina de Materiales

The reduction of phenol and/or formaldehyde consumption during phenolic resin synthesis is of great technological and academic interest because of its economic and environmental implications. In this work, the addition of sodium lignosulfonate as partial replacement of phenol in the resol phenolic base resins for decorative laminates production is experimentally studied. The work involved: i) the characterization and reactivation of lignosulfonate, ii) the industrial synthesis of traditional and modified resoles by replacement of 10% of phenol, iii) the industrial impregnation of Kraft-type papers with the produced resins, iv) the production of laminates at laboratory and industrial level, and v) the measurement of their final properties. Tensile, bending and impact strength were evaluated. Modified laminates exhibited mechanical properties statistically comparable with those of traditional laminates. Industrial tests were carried out at Centro S.A, San Francisco, Córdoba.