resumo
This work discusses the optimization of different synthesis parameters for a low emitting urea-formaldehyde (UF) resin. Industrially, this resin was synthesized using the alkaline-acid process (alkaline methylolation and acidic condensation) at different values of pH, temperature (T) and final viscosity and characterized according to different analytical methods. Particleboards (PBs) were produced using different pressing times and characterized according to the standard tests. A statistical analysis (ANOVA) was performed, and the main conclusion is that small changes on the synthesis of resins parameters do not affect the performance of PBs.
palavras-chave
ADHESIVES; CRYSTALLINITY; SEPARATION; EMISSION; BOARD; TIME
categoria
Materials Science; Polymer Science
autores
Goncalves, C; Pereira, J; Paiva, NT; Ferra, JM; Martins, J; Magalhaes, F; Barros-Timmons, A; Carvalho, L
nossos autores
Ana Margarida Madeira Viegas de Barros Timmons
Professor associadoagradecimentos
The author thanks ENGIQ - Doctoral Programme in Refining, Petrochemical and Chemical Engineering (PDERPQ); FCT and EuroResinas - Industrias Quimicas for the PhD grant PD/BDE/174352/2016. This work was financially supported by: Project POCI-01-0145-FEDER-006939 (Laboratory for Process Engineering, Environment, Biotechnology and Energy - UID/EQU/00511/2013) funded by the European Regional Development Fund (ERDF), through COMPETE2020 - Programa Operacional Competitividade e Internacionalizacao (POCI) and by national funds, through FCT - Fundacao para a Ciencia e a Tecnologia; the 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 and 2GAR project under PT2020 (3489).