Endre søk
Begrens søket
1 - 19 of 19
RefereraExporteraLink til resultatlisten
Permanent link
Referera
Referensformat
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Treff pr side
  • 5
  • 10
  • 20
  • 50
  • 100
  • 250
Sortering
  • Standard (Relevans)
  • Forfatter A-Ø
  • Forfatter Ø-A
  • Tittel A-Ø
  • Tittel Ø-A
  • Type publikasjon A-Ø
  • Type publikasjon Ø-A
  • Eldste først
  • Nyeste først
  • Skapad (Eldste først)
  • Skapad (Nyeste først)
  • Senast uppdaterad (Eldste først)
  • Senast uppdaterad (Nyeste først)
  • Disputationsdatum (tidligste først)
  • Disputationsdatum (siste først)
  • Standard (Relevans)
  • Forfatter A-Ø
  • Forfatter Ø-A
  • Tittel A-Ø
  • Tittel Ø-A
  • Type publikasjon A-Ø
  • Type publikasjon Ø-A
  • Eldste først
  • Nyeste først
  • Skapad (Eldste først)
  • Skapad (Nyeste først)
  • Senast uppdaterad (Eldste først)
  • Senast uppdaterad (Nyeste først)
  • Disputationsdatum (tidligste først)
  • Disputationsdatum (siste først)
Merk
Maxantalet träffar du kan exportera från sökgränssnittet är 250. Vid större uttag använd dig av utsökningar.
  • 1.
    Báder, Mátyás
    et al.
    University of Sopron, Sopron, Hungary.
    Bak, Miklós
    University of Sopron, Sopron, Hungary.
    Németh, Róbert
    University of Sopron, Sopron, Hungary.
    Rademacher, Peter
    Mendel University in Brno, Brno, Czech Republic.
    Rousek, Radim
    Mendel University in Brno, Brno, Czech Republic.
    Horníček, Stanislav
    Mendel University in Brno, Brno, Czech Republic.
    Dömény, Jakub
    Mendel University in Brno, Brno, Czech Republic.
    Klímek, Petr
    Mendel University in Brno, Brno, Czech Republic.
    Kudela, Jozef
    Technical University in Zvolen, Zvolen, Slovakia.
    Sandberg, Dick
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.
    Neyses, Benedikt
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.
    Kutnar, Andreja
    University of Primorska, Koper, Slovenia; InnoRenew CoE, Izola, Slovenia.
    Wimmer, Rupert
    University of Natural Resources and Life Sciences, Vienna, Austria; Renewable Materials, Tulln an der Donau, Austria.
    Pfriem, Alexander
    Eberswalde University for Sustainable Development, Eberswalde, Germany.
    Wood densification processing for newly engineered materials2018Inngår i: Proceedings of the 5th International Conference on Processing Technologies for the Forest and Bio-based Products Industries (PTF BPI 2018), Freising/Münich, September 20-21 / [ed] M. C. Barbu; A. Petutschnigg; E. M. Tudor, Kuchl, 2018, s. 255-263Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Wood is a renewable, bio-based material with a mixture of different properties and qualities, used in numerous applications. Beside many species with high wood qualities several species suffer due to a number of disadvantages, where low hardness and abrasive resistance are characteristic for low-density species. This paper presents examples of on-going European research projects and industrial processes mostly related to wood densification methods. Wood densification is a classical thermohydro-mechanical (THM) wood treatment process, through which density is increased by mechanical compression of wood perpendicular to the grain, by impregnation of cell lumens or cell walls with solutions or melted substances (resins, waxes), or by a combination of both. The purpose is to produce newly designed and engineered materials and products with new property profiles, which would potentially find new markets. In general, the THM processes consist of three stages: plasticization of the wood cells, followed by the actualcompression, and finally solidification of the compressed wood in order to prevent elastic spring-back and the moisture-induced set-recovery. The wood densification process refers but is not limited to solid wood and might apply to whole wood pieces, or to local areas within given pieces only. Another THM method is the mechanical compression of wood parallel to the grain, which leads to a product with high flexibility. A European wood research network, represented by the authors of this contribution, has extended experience in many wood modification processes, as demonstrated through ongoing researches and case studies in this paper

  • 2.
    Rademacher, Peter
    et al.
    University of West Hungary, Hungary.
    Bader, Matyas
    University of West Hungary, Hungary.
    Nemeth, Robert
    University of West Hungary, Hungary.
    Rousek, Radim
    Mendel University in Brno, Department of Wood Science, Czech Republic.
    Paril, Petr
    Mendel University in Brno, Department of Wood Science, Czech Republic.
    Baar, Jan
    Mendel University in Brno, Department of Wood Science, Czech Republic.
    Hornicek, Stanislav
    Mendel University in Brno, Department of Wood Science, Czech Republic.
    Dejmal, Ales
    Mendel University in Brno, Department of Wood Science, Czech Republic.
    Dömeny, Jakub
    Mendel University in Brno, Department of Wood Science, Czech Republic.
    Kúdela, Jozef
    Technical University in Zvolen, Department of Wood Science, Slovakia.
    Kutnar, Andreja
    University of Primorska, Slovenia.
    Neyses, Benedikt
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.
    Sandberg, Dick
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.
    European co-operation in wood research From native wood to engineered materials: Part 2: densification modification in product development2017Inngår i: Pro Ligno, ISSN 1841-4737, E-ISSN 2069-7430, Vol. 13, nr 4, s. 351-360Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Wood  is  a  renewable,  biological  material  used  in  numerous  applications  and  it  is  growing  in  importance  due  to  sustainable  development  efforts.  Wood  also  suffers  from  a  number  of  disadvantages,  were low hardness and abrasive resistance are characteristic for low-density species.  This paper presents state of the art on different wood densification processes as one emerging process technology for increased use  of  low-density  species.  The  presentation  is  based  on  work  by  different  European  research  groups  in  wood  science,  collaborating  in  the  field  mainly  through  different  COST  Actions.  The  main  principles  for  processes are discussed, such as bulk and surface densification, as well as methods for reducing the shape memory  effect  of  densified  wood.  The  main  challenges  for  the  future  are  in  the  field  of  finding  fast  and  environmental  friendly  method  for  elimination  of  the  set-recovery  and  scaling  up  to  profitable  industrial  applications.  To  provide  a  better  understanding  with  this  regard,  some  relevant  applications  of  densified  wood are presented.

  • 3.
    Neyses, Benedeikt
    et al.
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.
    Sandberg, Dick
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.
    Ionic liquid pre-treatment to reduce the elastic spring-back and set-recovery of surface densified Scots pine.2017Inngår i: COST Action FP1407 3rd Conference: Wood modification research & applications / [ed] Tondi, G, Posavčevič, M, Kutnar, A, Wimmer, R,, Kuchl, Austria, 2017, s. 32-33Konferansepaper (Fagfellevurdert)
  • 4.
    Neyses, Benedikt
    et al.
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.
    Rautkari, Lauri
    Department of Bioproducts and Biosystems, Aalto University.
    Yamamoto, Akio
    Department of Bioproducts and Biosystems, Aalto University.
    Sandberg, Dick
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.
    Pre-treatment with sodium silicate, sodium hydroxide, ionic liquids or methacrylate resin to reduce the set-recovery and increase the hardness of surface-densified Scots pine2017Inngår i: iForest : Biogeosciences and Forestry, ISSN 1971-7458, E-ISSN 1971-7458, Vol. 10, nr 5, s. 857-864Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The hardness of the outer regions of solid wood can be improved by surface densification, and this opens up new fields of application for low-density species. So far, surface densification relies on time- and energy-consuming batch processes, and this means that the potential advantages over more expensive hardwood species or non-renewable materials are reduced. Using fossil-based plastics or applying wood densification processes with a high energy consumption has adverse effects on the environment. In a previous study, it was shown that the surface of wood can be densified by a continuous high-speed process, adopting a roller pressing approach. The desired density profiles could be obtained at process speeds of up to 80 m min-1, but an equally simple and fast method to eliminate the moisture-induced set-recovery of the densified wood cells is still required. For this reason, the goal of the present study was to evaluate the effect on the set-recovery and hardness of surface-densified Scots pine after a fast pre-treatment with solutions of sodium silicate, sodium hydroxide, methacrylate resin, and ionic liquids. The Scots pine specimens were pre-treated by applying the chemical treatment and impregnation agents to the wood surface with a paper towel, before the specimens were densified. For each type of treatment, 15 specimens were densified in a hot press. The set-recovery was measured after two wet-dry cycles, and 30 Brinell hardness measurements were carried out on each group of specimens. In general, the effect of the treatments on the set-recovery was rather low. Ionic liquid solutions appear to work as a strong plasticiser and the treatment led to a reduction in set-recovery by 25%. The treatments with sodium silicate, ionic liquids and methacrylate resin led to a greater hardness than in untreated and densified specimens. Further experiments are needed to improve the depth of penetration of the treatment solutions into the wood surface, as this was identified as one of the main causes of the rather weak effects.

  • 5.
    Neyses, Benedikt
    et al.
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.
    Sandberg, Dick
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.
    A new method to select wood species suitable for surface densification2016Inngår i: BIOCOMP 2016: The 13th Pacific Rim Bio-Based Composites Symposium : Bio-based composites for a sustainable future., Concepción: University of Concepción , 2016, s. 96-, artikkel-id PT04Konferansepaper (Fagfellevurdert)
  • 6.
    Neyses, Benedikt
    et al.
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.
    Sandberg, Dick
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.
    Application of a new method to select the most suitable wood species for surface densification2016Inngår i: New Horizons for the Forest Products Industry: 70th Forest Products Society International Convention, June 26-29, Portland, Oregon, USA, Madison: Forest Products Society, 2016Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Surface densification improves many properties of solid wood, and opens up new applications for low-density species e.g. flooring or wooden structures, and adds value to these species. Research into the surface densification of wood has been focused mainly on Scots pine, Norway spruce, aspen and poplar. In order to propagate the use of surface densification techniques, it is necessary to find more wood species that have a particularly high potential for an increase in value through such a treatment.The purpose of this study was to select wood species which are suitable for surface densification and for use in a specific product, by applying a systematic and quantifiable selection method. The method that was presented in detail in an earlier work, is designed around a workflow consisting of multiple stages, takes into account weighted selection criteria and provides a quantified ranking of the most suitable species.The results suggest that several species such as alder, basswood, cedar, and obeche that have not previously been considered for surface densification may be suitable candidates. Aspen, poplar and pine were confirmed as suitable, being among the top species in the ranking.

  • 7.
    Neyses, Benedikt
    et al.
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknologi.
    Hagman, Olle
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknologi.
    Nilsson, Annika
    Swerea Mefos.
    Sandberg, Dick
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknologi.
    Sundqvist, Bror
    SP.
    Continuous Wood Surface Densification: Chemical Treatments to Reduce the Set-Recovery2016Inngår i: BIOCOMP 2016: The 13th Pacific Rim Bio-Based Composites Symposium - Bio-based composites for a sustainable future, Concepción: University of Concepción , 2016, s. 66-77Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The hardness of the outer surface of solid wood can be improved by densification, and this opens up new fields of application for low-density species. So far, surface densification is carried out in time- and energy-consuming batch processes, and this means that potential advantages over more expensive hardwood species or non- renewable materials are lost. One of the crucial problems in all densification processes is to reduce the moisture-induced set-recovery of the densified wood cells. In a previous study, a new high-speed continuous surface densification process was introduced, where the surface of solid Scots pine boards could be densified at speeds of up to 80 m/min by a roller pressing technique. The aim of the present study was to integrate the roller pressing technique with different pre- and post-treatment methods to reduce the set- recovery. An aqueous solution of sodium hydroxide was used as a pre-treatment agent to activate the wood surface prior to densification, and a methacrylate ester monomer solution was used as an impregnation agent, both before and after densification. After densification and impregnation, the methacrylate monomers are polymerized by curing in an oven at 100°C in order to stabilize the compressed wood cells. The results show that the different treatments had no significant effect on the set-recovery, probably due to insufficient penetration into the wood material. Future work will focus on improving the treatment process and integrating all process steps into a fully continuous and automatic process. 

  • 8.
    Neyses, Benedikt
    et al.
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.
    Hagman, Olle
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.
    Sandberg, Dick
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.
    Nilsson, Annika
    Swerea MEFOS AB.
    Development of a continuous wood surface densification process: the roller pressing technique2016Inngår i: Proceedings of the 59th International Convention of Society of Wood Science and Technology.: Forest Resource and Products: Moving Toward a Sustainable Future. / [ed] Susan LeVan-Green, Monona, WI: Society of Wood Science and Technology , 2016, s. 17-24Konferansepaper (Fagfellevurdert)
  • 9.
    Couceiro, José
    et al.
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.
    Neyses, Benedikt
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.
    Sandberg, Dick
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.
    In-situ moisture content and density measurements in surface densified wood using dual X-ray absorptiometry in medical CT-scanning2016Inngår i: BIOCOMP 2016: The 13th Pacific Rim Bio-Based Composites Symposium, Bio-based composites for a sustainable future., Concepción: University of Concepción , 2016, Vol. 2, s. 92-, artikkel-id NA01Konferansepaper (Fagfellevurdert)
  • 10.
    Neyses, Benedikt
    et al.
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.
    Rautkari, Lauri
    Aalto University, Department of Forest Products Technology.
    Yamamoto, Akio
    Aalto University, Department of Forest Products Technology.
    Sandberg, Dick
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.
    Reduction of the set-recovery of surface-densified Scots pine by pre-treatment with sodium silicate or sodium hydroxide2016Inngår i: Innovative production technologies and increased wood products recycling and reuse / [ed] Kutnar A., Schwarzkopf M., Burnard M., Sebera V. & Troppová E., Brno: Mendel University in Brno , 2016, s. 57-58Konferansepaper (Fagfellevurdert)
  • 11.
    Neyses, Benedikt
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknologi.
    Surface-Densified Wood: From Laboratory-Scale Research Towards a Competitive Product2016Licentiatavhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    For many decades, humans have been consuming more resources than the world has to offer in the long run. Increasing the use of renewable materials, such as wood, is essential if we are to achieve a sustainable use of the resources available to us. Densification of wood in general, and surface densification in particular, has the potential to improve the properties of widely available low-density wood species, opening up new fields of application, and fostering the use of wood products in general.

    The objective of this thesis is to put past research within the field of surface densification of solid wood and advancements within the present project into a context, and to suggest a path towards a performance-driven and cost-effective type of product. A prevalent research gap has been identified and this thesis summarizes how this gap can be filled by already conducted and future studies. Important aspects that need be handled in order to fulfill the overall vision of the large-scale commercialization of surface-densified wood products are considered.

    Past studies were successful in gaining a good understanding of different approaches to the densification of solid wood, such as using a hot press or a friction welding machine. Problems, such as the moisture-induced recovery of the densified wood cells could be solved from a technological perspective. However, those studies did not take into account industrial implementation. Existing methods are time- and/or energy-consuming. The use of roller-pressing equipment showed promising results, but also highlighted certain limitations. Solid wooden boards have been successfully surface-densified at speeds of up to 80 m/min. However, problems arose regarding the plasticization and stabilization of the densified wood cells, indicating that a continuous belt-press approach might be more viable with regard to the objective of industrial implementation.

    In parallel, a structured method to identify the most suitable wood species for surface densification has been presented, with the aim of propagating the use of surface-densified wood products and widening their fields of application. This method has confirmed the suitability of previously used wood species, and has also suggested alternatives not considered thus far.

    Previous studies into the surface densification of wood have provided a rather sound understanding of the densification process and have provided a useful foundation for the current project. The work done, thus far, has shown the viability of a continuous densification process and has indicated a sensible path towards the widespread establishment of surface-densified wood products on the market. 

  • 12.
    Neyses, Benedikt
    et al.
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.
    Sandberg, Dick
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.
    A new methodology to select hardwood species for wooden products2015Inngår i: Wood Material Science & Engineering, ISSN 1748-0272, E-ISSN 1748-0280, Vol. 10, nr 4, s. 344-352Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In general, only a few wooden species are used or even considered for any given wooden product, even though hundreds of alternative wood species are available. In many cases, the reason for this is tradition rather than availability, technical or aesthetic considerations and it can result in endangered species being used to an unnecessarily high degree. The purpose of this study was to develop a structured, quantifiable, and easy-to-use methodology to identify suitable hardwood species for a specific product. The methodology combines processes based on quality function deployment and multivariate data analysis in a three-step workflow, and takes different criteria into consideration. To verify the methodology, it was applied to an example product: an electric guitar. It was shown that the methodology was easy to use and provided useful and quantifiable results. Expansion of the underlying wood species data-set will be necessary to improve the performance in the future.

  • 13.
    Neyses, Benedikt
    et al.
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.
    Sandberg, Dick
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.
    Hagman, Olle
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.
    Wålinder, Magnus
    KTH Byggnadsmateriallära.
    Development of a continuous wood surface densification process with a reduced environmental impact2015Inngår i: Proceedings of the 1st COST Action FP1407 Conference, Life Cycle Assessment, EPDs and Modified Wood. Kutnar A, Burnard M, Schwarzkopf M, Simmons A (Eds.), Koper, Slovenia, August 25-26: Life Cycle Assessment, EPDs and Modified Wood, Koper, Slovenia, August 25-26 / [ed] A. Kutnar; M. Burnard; M. Schwarzkopf; A. Simmons, Koper, Slovenia: University of Primorska, Scence and Research Centre of Koper , 2015, s. 30-31Konferansepaper (Fagfellevurdert)
  • 14.
    Neyses, Benedikt
    et al.
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.
    Sandberg, Dick
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.
    Development of a contiuous wood surface densification process.2015Inngår i: Proceedings of the 11th Annual Meeting of the Wood Science and Engineering. / [ed] Waldemar Perdoch; Magdalena Broda, Poznan: Poznan University of Life Sciences , 2015, s. 202-Konferansepaper (Annet vitenskapelig)
  • 15.
    Neyses, Benedikt
    et al.
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.
    Sandberg, Dick
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.
    Development of a new wood-based modular furniture system: evaluation of suitable materials for connectors2015Inngår i: Pro Ligno, ISSN 1841-4737, E-ISSN 2069-7430, Vol. 11, nr 4, s. 595-602Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Concepts for modular furniture systems are of growing interest from the perspective of bothproducers and customers, and they are now entering the area of mass customization. Modularity andstandard interfaces eliminate the interdependency of the components of a product, and allow themanufacturer and customer to change components without affecting the product architecture. In thiscontext, the connectors between components of the modular furniture systems are essential for thesystems. The objective of this study was to evaluate the suitability of different wood-based materialsfor the connectors of the modular furniture system, the focus being on the strength properties.13different types of wood-based material were tested in three-point bending tests, and the modulus ofelasticity (MOE) and the modulus of rupture (MOR) were determined. The tested materialsincorporated wood modifications such as compression, heat treatment and impregnation, as well asdifferent types of adhesives. It could be concluded that birch plywood bonded with soybean glue, andsolid cumaru wood are the most suitable types of wood-based material for the modular furnituresystem. Compressed plywood generally exhibited better strength properties than ordinary plywood,and the type of adhesive had no significant influence on either MOE or MOR. Self-bonding plywoodhad a high MOE, but a comparably low MOR. Solid cumaru wood exhibited both a high MOE and ahigh MOR. Materials which had reasonable strength properties and a comparably low environmentalimpact were considered suitable for the connectors of the modular furniture system, which meant thatnon-formaldehyde-emitting adhesives were favoured.

  • 16.
    Neyses, Benedikt
    et al.
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.
    Sandberg, Dick
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.
    Development of a wood based modular furniture system2015Inngår i: The XXVIIth International Conference Research for Furniture Industry: 17-18 September 2015 Ankara, Turkey : proceedings / [ed] Hamza Çinar; Cevdet Söğütlü; Nihat Döngel; Özgür Imirzi, Ankara: Gazi University , 2015, s. 8-17Konferansepaper (Fagfellevurdert)
  • 17.
    Neyses, Benedikt
    et al.
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.
    Hagman, Olle
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.
    Identifying suitable wood species for wooden products with multivariate data analysis2015Inngår i: Holztechnologie, ISSN 0018-3881, Vol. 56, nr 2, s. 33-36Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In many cases only few wood species are used or even considered for any given wooden product, even though there are hundreds of wood species available. The objective of this project was the development of a time efficient and structured method to identify the most suitable wood species for wooden products, based on a set of required material properties. This goal was achieved by applying multivariate data analysis. The method was based on a dataset consisting of commercially available wood species represented by many different properties. The scores and loadings of the multivariate data analysis method Principal Component Analysis (PCA) were used to identify the wood species with the most fitting property combinations for the product in question. Applying the method to an example case resulted in several plausible alternatives to the commonly used wood species. It is possible to apply the method to any wooden product by determining the set of required properties.

  • 18.
    Cristescu, Carmen
    et al.
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.
    Neyses, Benedikt
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.
    Sandberg, Dick
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.
    Söderström, Ove
    Kungliga tekniska högskolan, KTH, KTH Byggnadsmateriallära.
    Modeling of the temperature distribution in self-bonded beech-veneer boards during hot pressing2015Inngår i: Pro Ligno, ISSN 1841-4737, E-ISSN 2069-7430, Vol. 11, nr 4, s. 97-103Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Auto-adhesion is a phenomenon that is in general related to the manufacture of wood-basedfibreboards, e.g. to the Masonite process or similar processes based on lignocellulosic raw materials.Auto-adhesion as a mechanism for the bonding of solid wood or veneer has not met with the sameindustrial success, but interest is increasing for environmental reasons and as a result of theincreasing cost of adhesives in wood products. The temperature in the laminate is crucial for the autoadhesionprocess that will result in bonding between veneers during hot-pressing. This paper presentsa model for the temperature evolution during the hot-pressing of a porous material, which wasdeveloped and verified for a five-veneer beech laminate pressed at a temperature of 250°C and apressure of 6MPa in an open system for 280 seconds. The result shows good agreement between themodel and the experimental temperature data during the hot-pressing. It can be concluded that a goodcontrol of the temperature evolution during the manufacture of adhesive-free veneer boards is of majorimportance to reach the target properties of the product.

  • 19.
    Karlsson, Olov
    et al.
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.
    Cristescu, Carmen
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.
    Neyses, Benedikt
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.
    Sandberg, Dick
    Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Träteknik.
    Pretreatment of veneers with hydrogen peroxide for self-bonded laminated boards.2015Inngår i: Proceedings of the Eighth European Conference on Wood Modification: ECWM8 / [ed] mark Huges; Lauri Rautkari; Tuuli Uimonen; Holger Militz; Brigitte Junge, Helsinki: Aalto University, School of Chemical Engineering , 2015, s. 305-310Konferansepaper (Fagfellevurdert)
1 - 19 of 19
RefereraExporteraLink til resultatlisten
Permanent link
Referera
Referensformat
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf