abstract
The properties of agglomerated cork panels bound with melamine-urea-formaldehyde (MUF) and polyurethane (PU) resins were investigated. Tensile strength, Young's modulus, elongation at break, mandrel flexibility, and resistance to boiling water were evaluated. The resins' wettability on the cork surface was also evaluated. The results showed that resin's nature and content influenced significantly the physical-mechanical properties of the agglomerated cork panels. At the same resin content, panels bound with MUF resin presented considerably higher stiffness and tensile strength when compared to panels bound with PU. On the other hand, PU resin lends resilience and water resistance to the panels, and is the only binder that can be used when panel flexibility is desired.
keywords
POLYMER COMPOSITES; MORPHOLOGY; BEHAVIOR; SUBERIN
subject category
Engineering; Materials Science
authors
Antunes, A; Pereira, J; Paiva, N; Ferra, J; Martins, J; Carvalho, L; Barros-Timmons, A; Magalhaes, FD
our authors
Ana Isabel Filipe Antunes
PhD Student
Ana Margarida Madeira Viegas de Barros Timmons
Associate Professoracknowledgements
This work was financially supported by: EuroResinas -Industrias Quimicas S.A.; Project 2GAR (SI I&DT -Projects in co-promotion) in the scope of Portugal 2020, co-funded by FEDER (Fundo Europeu de Desenvolvimento Regional) under the framework of POCI (Programa Operacional Competitividade e Internacionalizacao); Base Funding UIDB/00511/2020 (Laboratory for Process Engineering, Environment, Biotechnology and Energy -LEPABE) funded by FEDER funds through COMPETE2020 -Programa Operacional Competitividade e Internacionalizacao (POCI) -and by national funds through FCT -Fundacao para a Ciencia e a Tecnologia; and Project CICECO-Aveiro Institute of Materials, POCI-01-0145-FEDER-007679 (FCT Ref. UID/CTM/50011/2013), financed by national funds through the FCT/MEC and when appropriate co-financed by FEDER under the PT2020 Partnership Agreement. Ana Antunes wishes to thank FCT for PhD grant PD/BDE/113544/2015 and to ENGIQ -Doctoral Programme in Refining, Petrochemical and Chemical Engineering (PDERPQ).