Mechanical evaluation of laminates based on phenol-formaldehyde resins modified with sodium lignosulfonate

TAVERNA M; OLLEARO R; NICOLAU V; ESTENOZ D; MORAN JUAN; FRONTINI P; MEIRA G

Dallas

Congreso; 247th ACS National Meeting; 2014

American Chemical Society

Reducing consumption of phenol and/or formaldehyde for the synthesis of phenolic resins, has been the subject of numerous research papers, due to economic and environmental implications associated with the use of these raw materials. In this work base resole type phenolic resins were synthetized (traditional and modified by partial replacement of phenol with 10% w/w sodium lignosulfonate) for the production of decorative laminates. The work involved: i) the characterization and reactivation of lignosulfonate ii) the industrial synthesis of resole iii) industrial impregnation of Kraft paper with the produced resins iv) obtaining laboratory and industrial laminates, and v) measuring final and mechanical properties such as tensile strength (ASTM D3039-00), the 3-point bending (ASTM D790-03) and impact (ASTM D5628-96). Modified laminates exhibited statistically comparable mechanical properties to those of traditional laminates.