Embed Size (px)
Citation preview
Laminated Strong Eco-Material for Building Contruction Made of Cellulose-Strengthened Wood
Cellunews
The �nal workshop of the CELLUWOOD project was held on 4th SEPTEMBER, 2014 at the Catalan Institute of Wood in Lleida, Spain. During the workshop comprehensive outcomes of the CELLUWOOD project were presented and the future exploitation of the project results was discussed. The project outcomes were presented to the industry stakeholders and the research community representatives. Some positive feedbacks on project developed products and technology were obtained by the external workshop participants who emphasised the high commercial and further research potentials for some of the project outcomes. The useful contacts were established with potential resin manufacture with an interest for further commercial exploitation of the CELLUWOOD technology in particular lignin-based gluing system.
C E L L U W O O D F I N A L W O R K S H O P
ISSUE at glanceCELLUWOOD �nal workshop
Project outcomes
CELLUWOOD future
02/14
CelluWood
BioresinsECO beams and columns
CELLUWOOD CONSORTIUM
www.cellluwood.com
SEPTEMBER 2014
Cellunews
P R O J E C T O U T C O M E S
02/14 page 2
Lignin-based gluing system
The project results can be classi�ed in two groups:
www.celluwood.comCelluWood
Project outcomes - summary
After three years of strong commitment from all project partners and intensive development and testing work, many important outcomes have been achieved.The more natural based adhesion systems were developed, tested and applied in eco-beam and eco-column lamination process. In particular, good results were achieved with eco-beams. Eco-beams fabricated with the modi�ed PF resin showed better mechanical properties than commercially available Melamine Urea Formaldehyde (MUF) resin beams.
Another novelty concept which was developed and tested was the inorganic core material (ICM). It is envisaged that once the interface between the ICM and enclose lumber is improved, the ICM composite columns can potentially be commercialised to use wood residues and reduce raw material costs for the column production.
New adhesive, bonding and structural components:
lignin-based gluing system;
nanocellulose epoxy and casein resins for eco-beams;
inorganic core material for eco-columns.
Structural construction products:
eco-beams and eco-columns.
The best project results were achieved in producing lignin-based gluing system consisting of lignin-modi�ed PF resin and a suitable hardener to promote polymer setting.
The �nal outcome was glue with a “greener” character capable of setting in cold pressing in order to be used as binder for glulam building materials in small and medium sized companies. This adhesive is of phenol–formaldehyde type resin where 50% of phenol has been replaced by lignin. This new lignin-based gluing system can be e�ectively used in the production of glulam beams and columns with a performance even better then with conventional gluing systems.
The low emission lignin modi�ed PF resin is easy to apply and cheap to buy.
Eco-beams fabricated with the modi�ed PF resin showed better mechanical properties than commercially available MUF (melamine- urea-formaldehyde) beams and are suitable for outdoor constructions.
The developed gluing system based on lignin-PF resin presents a clear environmental improvement regarding commercial ones: 74% vs MUF and 86% vs PU (measured with Ecoindicator 99 method). Besides this environmental advantage, it has lower cost and shows better technical performances.
BIORESINS
Cellunews
Nanocellulose reinforced adhesives have been another novelty concept developed within the project. Two types of glue were proposed and tested: nanocellulose reinforced epoxy and nanocellulose reinforced casein glues. The potential of nanocellulose is that it achieves strong and reliable bonds derived from the very high surface area of the nano-particles relative to their size.
It has been proven that low addition of nano- cellulose could signi�cantly increase the bonding performance of both adhesives.
Nanocellulose reinforced resins have the potential to replace current used MUF and epoxy resins, and provide much e�cient and high strength resin systems for laminated timber industries.
However, it must be noted that current early stage of nanocellulose development, the cost of the nanocellulose is still high, although a lower dosage of the nanocellulose epoxy could be used for the same bonding outcomes, which could o�set the costs.
02/14 page 3
Nanocellulose epoxy resin and casein resin for eco-beams
www.celluwood.com
Ultimate outcomes of the CELLUWOOD project are the eco-beams and eco-columns.
The production process involved used of “greener” binding systems based on more natural raw materials. The processing technologies have been tailored with the application of the bioresin systems. This could be done with the conventional production facilities and gluing lines in the companies. In particular, good results were showing the eco beams which were using the lignin-based gluing system. These beams showed good mechanical properties in some cases better than conventional beams. They are also suitable for outdoor use.
An important aspect of the use of project developed gluing systems is that they do not need any extra investment in production lines.
CelluWood
Inorganic core material for eco columnsIn addition to the di�erent gluing systems the project also developed and tested the Inorganic Core Material (ICM) for eco-columns. It is a novelty idea of using wood residues from timber beam and column production as core material for the eco-columns.
The key component for ICM is a modi�ed sawdust and gypsum mixture formulation. It is envisaged that once the interface between the ICM and enclose lumber is improved, the ICM composite columns can potentially be commercialised to use wood residues and reduce raw material costs for the column production. ICM represent a versatile product, cheaper than solid timber.
Structural construction products: Eco-beams and eco-columns
Cellunews 02/14 page 4
PROJECT CONSORTIUM
InWood Developments Ltd (UK)Tecnifusta Enginyeria SL (Spain)CBD d.o.o. - Contemporary Building Design (Slovenia)Chimar Hellas S.A. (Greece)Research and Development Association for the Wood, Furniture and Packaging industries AIDIMA (Spain)Brunel University (UK)InnovaWood asbl (Belgium)
CONTACT
Mr. Edward StenhouseProject [email protected]. Dr. Mizi Fan Project Management [email protected]
"This publication has been produced with the assistance of the European Union. The contents of this publication are the sole responsibility of project consortium and can in no way be taken to re�ect the views of the European Union”
The resin products developed within CELLUWOOD project can potentially replace existing MUF and epoxy resin application. Therefore the promotion of the technology will target resin manufacturers, laminated timber industry and related sectors. The promotion of the technology to resin and glulam manufacturers worldwide could be envisaged in collaboration with lignin and nanocellulose producers.
The novel ICM concept using a gypsum and sawdust mixture as core material for columns can �nd its place in the wood construction market, in particular in the wall building and column manufacturing sector.
Further commercialisation of the eco-beams and eco-columns can be of interest to small businesses of craftsmen (woodworkers, refurnishing workers, restorers, repairers) and SMEs clusters, as these products provide an opportunity to expand and complete their product o�er.
C E L L U W O O D F U T U R E
Future actions
Project partners will continue to work on post-project exploitation of the results. This will include: - promotion of the technology to resin and glulam manufacturers,
- collaboration with lignin and nanocellulose producers,
- post-project results dissemination to professionals sector (architects woodworkers, refurnishing workers, restorers, repairers) and SMEs clusters.
Also for architects and design studios the eco products are of interest in the sense that they can directly be implemented and included in product portfolios for commercial activities (e.g. promotion of eco-friendly designed building). Finally, the increasing DIY sector is a targeted customer of the new developed eco-products.
MSc. Miguel Ángel AbiánProject Coordination and Management at AIDIMA [email protected]
InnovaWoodProject Web and [email protected]
