A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Liquefied wood as a partial substitute of melamine-urea-formaldehyde and urea-formaldehyde resins
Maritime pine (Pinus pinaster) sawdust was used to produce liquefied wood by the polyhydric method with acid catalysis. The process was optimized to produce the highest amount of liquefied wood. Wood liquefied at 160ºC for 90 min was used in the adhesion tests. The bond strength of veneer glued with urea-formaldehyde and melamine-urea-formaldehyde resins and several mixtures of liquefied wood with urea- formaldehyde and melamine-urea-formaldehyde wasevaluated by automated bonding evaluation system. With the increase in liquefied wood content the bond strength decreased. Nevertheless for 20% liquefied wood the reduction of internal bond strength is relatively small and still within the minimum standards required. When 70% of liquefied wood is employed there is a significant decrease in bond strength. In conclusion it is possible to use a small amount of maritime pine sawdust liquefied wood as a partial substitute of urea-formaldehyde and melamine-urea-formaldehyde resins in the particleboard production, thus decreasing the formaldehyde content. ; info:eu-repo/semantics/publishedVersion
Liquefied wood as a partial substitute of melamine-urea-formaldehyde and urea-formaldehyde resins
Maritime pine (Pinus pinaster) sawdust was used to produce liquefied wood by the polyhydric method with acid catalysis. The process was optimized to produce the highest amount of liquefied wood. Wood liquefied at 160ºC for 90 min was used in the adhesion tests. The bond strength of veneer glued with urea-formaldehyde and melamine-urea-formaldehyde resins and several mixtures of liquefied wood with urea- formaldehyde and melamine-urea-formaldehyde wasevaluated by automated bonding evaluation system. With the increase in liquefied wood content the bond strength decreased. Nevertheless for 20% liquefied wood the reduction of internal bond strength is relatively small and still within the minimum standards required. When 70% of liquefied wood is employed there is a significant decrease in bond strength. In conclusion it is possible to use a small amount of maritime pine sawdust liquefied wood as a partial substitute of urea-formaldehyde and melamine-urea-formaldehyde resins in the particleboard production, thus decreasing the formaldehyde content. ; info:eu-repo/semantics/publishedVersion
Liquefied wood as a partial substitute of melamine-urea-formaldehyde and urea-formaldehyde resins
Esteves, Bruno (author) / Martins, João (author) / Martins, Jorge (author) / Cruz-Lopes, Luísa (author) / Vicente, José (author) / Domingos, Idalina (author)
2017-02-02
doi:10.4067/S0718-221X2015005000026
Article (Journal)
Electronic Resource
English
DDC:
690
Curing kinetics study of melamine–urea–formaldehyde resin/liquefied wood
| British Library Online Contents | 2013
| British Library Online Contents | 2009
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| Springer Verlag | 1990