Panels composed by particleboards and PU foam core from castor oil for thermal insulation and sound absorption

• Grant number: 11/21075-3
• Support Opportunities: Scholarships in Brazil - Doctorate
• Effective date (Start): March 01, 2012
• Effective date (End): August 31, 2014
• Field of knowledge: Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
• Principal Investigator: Francisco Antonio Rocco Lahr
• Grantee: Marília da Silva Bertolini
• Host Institution: Escola de Engenharia de São Carlos (EESC). Universidade de São Paulo (USP). São Carlos , SP, Brazil

Abstract

Nowadays, issues related to thermal and acoustic performance are of prime importance, in terms, respectively, the power saving due to reduced need for heating and cooling the indoor environment and the adoption of measures to control noise, caused by the development of contemporary human activity. The advent of composite materials enabled the use of residues from processes and the development of renewable source material increasingly contributes to the emergence of products with lower environmental impact. In this context falls within the proposed work, aiming at the production of composite panels, whose outer layers are composed by particleboards obtained from the Pinus sp residues treated with CCB and granulated of tires rubber, and whose core is made polyurethane foam based on castor oil. Will be adopted two particleboard configurations, two proportions of residues (wood and rubber tire) in particleboard producing and two densities of PU foam castor. Particleboards will be evaluated according to Brazilian Code NBR 14810-3 (2006) to check their physical and mechanical properties, morphology by Scanning Electron Microscopy (SEM) and porosity, a feature very important in terms of sound absorption by the test of Mercury Intrusion Porosimetry. To analyse the thermal stability of the particleboard's components, the Thermogravimetric Analysis (TGA) will be done, to evaluate the temperature range at which this product may be exposed for use as thermal insulation. PU foam castor will be evaluated in terms of density, SEM and TGA. The insulation will be determined by the column method fractionated modified with calorimeter, reaching the intrinsic thermal properties for each panel component and from this parameter will be determinate the composition of better thermal performance. The sound absorption coefficient will be examined through measurements of reverberation time, in the reverberation chamber, according to ISO 354 (1985). It is expected obtained composite panels which combine the intrinsic characteristics of each material used, resulting in a product which in addition to the environmental appeal due disposal of residues and use of materials from biomass, may have confirmed their potential for application in civil construction. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

BERTOLINI, MARILIA DA SILVA; GALVAO DE MORAIS, CESAR AUGUSTO; CHRISTOFORO, ANDRE LUIS; BERTA, STELAMARIS ROLLA; DOS SANTOS, WILSON NUNES; ROCCO LAHR, FRANCISCO ANTONIO. Acoustic Absorption and Thermal Insulation of Wood Panels: Influence of Porosity. BIORESOURCES, v. 14, n. 2, p. 3746-3757, 2019. (11/21075-3)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

BERTOLINI, Marília da Silva. Panels from wood and tire rubber wastes associated with castor-oil-based polyurethane foam for application as thermo-acoustic compositions. 2014. Doctoral Thesis - Universidade de São Paulo (USP). Escola de Engenharia de São Carlos (EESC/SBD) São Carlos.