PAPER making! FROM THE PUBLISHERS OF PAPER TECHNOLOGY INTERNATIONAL ® FROM THE PUBLISHERS OF PAPER T Volume 9, Number 1, 2023
Ecofriendly panels for building with eucalyptus sawdust and vegetal polyurethane resin: A mechanical evaluation JUVENIL NUNES DE OLIVEIRA JÚNIOR 1 , FELIPE PERISS´E DUARTE LOPES 1 , NOAN TONINI SIMONASSI 1 , HENRY ALONSO COLORADO LOPERA 2 , SERGIO NEVES MONTEIRO 1 & CARLOS MAURÍCIO FONTES VIEIRA 1 The use of natural fibers in composite materials has become an alternative to use synthetic ones. With the increase in consumption and the generation of waste, it becomes interesting to search for alternatives friendly to environment. The objective of this work was to evaluate the mechanical properties of composites manufactured using residues: from the wood industry (eucalyptus sawdust), from red ceramic (chamotte), and a vegetable based resin (castor oil-based polyurethane resin) as a matrix. The composites were manufactured in volumetric fractions of 70, 75, 80 and 85 of eucalyptus sawdust; and 0%, 5% and 10% of chamotte, totaling 12 formulations. Scanning electron microscopy (SEM) analyzes were performed on the eucalyptus sawdust used and on the composites produced with and without chamotte. The results indicates that both for the modulus of elasticity and modulus of rupture, the increase in the volumetric fraction of chamotte incorporated at composites causes an increase of properties in all compositions studied. In perpendicular tensile testing, it obtained values between 1.910 and 3.449 MPa. In the izod impact testing, values between 47.61 and 115.44 J/m were obtained. It was observed on SEM images that with the incorporation of chamotte on composites there was a great reduction in the amount of bubbles and voids presented at polymeric matrix and in some compositions have increased also the mechanical properties. Thus bringing a new option for use and adding value to this residue from the ceramic industry, producing an ecofriendly composite panel. Contact information: 1 State University of the North of Rio de Janeiro Darcy Ribeiro – UENF, Advanced Materials Laboratory, Av Alberto Lamego, 2000, CEP 28013-602 Campos dos Goytacazes, RJ, Brazil 2 CCComposites, Engineering school, Universidad de Antioquia (UdeA), Medellín, Colombia Case Studies in Construction Materials 18 (2023) e01839 https://doi.org/10.1016/j.cscm.2023.e01839 Creative Commons Attribution 4.0 International License
The Paper Industry Technical Association (PITA) is an independent organisation which operates for the general benefit of its members – both individual and corporate – dedicated to promoting and improving the technical and scientific knowledge of those working in the UK pulp and paper industry. Formed in 1960, it serves the Industry, both manufacturers and suppliers, by providing a forum for members to meet and network; it organises visits, conferences and training seminars that cover all aspects of papermaking science. It also publishes the prestigious journal Paper Technology International ® and the PITA Annual Review , both sent free to members, and a range of other technical publications which include conference proceedings and the acclaimed Essential Guide to Aqueous Coating .
Article 7 – Wood Panel
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