Analysis of interactions between the chemistry of wood and adhesives and their effect on cohesive and adhesive bondings
The main objective of this research project is to provide missing basic knowledge of the interactions between wood components and adhesives for the gluing of important domestic wood species.
|
|
|
A combination of ATR-FTIR spectroscopy and rheology is used for the analysis of cohesive bondings. In this way, information about the chemical reaction and the curing behavior of wood-adhesive combinations shall be gained. In addition, thermal analyses (DSC) as well as investigations by pyrolysis GC/MS will be performed. For evaluating adhesive bonding, the surface polarity of the wood and the adhesion energy (contact angle measurement, AFM) will be determined, and strength tests as well as microscopic examinations will be performed. Adhesion is a key technology in many areas, including the sector "wood in the construction industry" or "industrial wood construction". Improved knowledge of the permanent bonding of different wood species can result in higher process and product safety and thus promote the use of the raw material wood. In addition, bonding of different wood species as an alternative to spruce will allow for the development of new products with improved performance or durability, therefore increasing competition with other materials, and thus resulting in an increase in the competitiveness of wood.
|
Duration
|
February 2017 – July 2020
|
People
|
Özparpucu, Merve; Windeisen, Elisabeth; Richter, Klaus
|
Funding
|
Federal Ministry for Economic Affairs and Energy
|
|
|
Development of materials and manufacturing processes for door blanks, designed as combined fire and sound insulation doors
small-scale test furnace according to DIN EN 4102-8
|
The aim of the research project is the development of a manufacturing process for door blanks which combine fire and sound insulation doors in collaboration with the company Moralt AG at Wood Research Munich. Moralt is developing the fire-retardant blank with inner acoustic insulation layers without addition of fire protection additives. Wood Research Munich is in charge of developing a blank with 90 minutes fire resistance by impregnation or treatment of the wood components with suitable fire protection additives. The ongoing research has shown that the laminated core can be impregnated very well with various fire protection additives, leading to a significant reduction in charring rates. Further improvement of fire behavior should be achieved by the use of foaming flame retardants, building an “isolating” protective layer.
|
Duration
|
July 2014 - December 2016
|
People
|
Böck, Andreas
|
Funding
|
Zentrales Innovationsprogramm Mittelstand (ZIM) der AiF Projekt GmbH, Projektträger des Bundesministeriums für Wirtschaft und Energie (BMWi)
|
|
|
Increase in yield and quality of beech veneers for fabrication of veneer plywood
|
For the beech plywood fabrication in Germany to be competitive, yield and quality of rotary cut beech veneer is of crucial importance as well as labour costs, as it has a significant impact on the economic efficiency of the production process. This research project was aimed at developing technological procedures to considerably increase the veneer yield and ensure an improvement in veneer quality. By using digital image analysis and dry-pressing procedures it has been successfully demonstrated that this technical approach increases veneer yield. The results indicate it is possible to improve the quality of rotary cut beech veneer for the fabrication of beech plywood and show their potential for industrial application.
|
Duration
|
February 2013 - July 2015
|
People
|
Hendrick Buddenberg
|
Funding
|
Bundesministerium für Wirtschaft über Arbeitsgemeinschaft industrieller Forschungsvereinigungen (AiF)
|
|
|
|
|
Development of a fully- automated filling system for blow-in insulating materials, designed to reduce material settlement, using a uniform density distribution
|
The problem with using loose insulating materials is their settlement behavior throughout the use phase, which usually lasts several decades.However, standardised tests for the long-term behavior of insulating materials (ISO CD 18393, DIN EN 14064 etc.) leave considerable room for the performance of settlement tests. The objective of the project, performed in collaboration with the company x-floc, was the development of a fully-automated filling system for blow-in insulating materials. This included a test for settlement, simulating the long-term behavior of insulating materials in a short-term-test. At Wood Research Munich, an optimized vibration test bench was developed and built, which can simulate vibrations of all practice-relevant frequencies. The long-term behavior of loose insulating materials could be simulated well in relaxation tests.
|
Test for settlement with a cellulose insulating material
|
|
Duration
|
October 2011 - September 2013
|
People
|
Böck, Andreas
|
Funding
|
Zentrales Innovationsprogramm Mittelstand (ZIM) der AiF Projekt GmbH, Projektträger des Bundesministeriums für Wirtschaft und Energie (BMWi)
|
|
|
Development of non-combustible light-weight sandwich panels based on thin fire protection boards with fibre reinforcement and mineral highly-filled papers for hollow structures
Prototype of the light-weight fire protection board
|
As part of an AiF research project, Wood Research Munich and PTS (Papiertechnische Stiftung) jointly developed a light-weight composite board that complies with Material Class A2 (non-combustible) according to German Classification and whose weight of approx. 300 kg/m3 is only a quarter of that compared to common fire protection boards. The surface layers of the panel-shaped composite consist of thin, mineral based, natural fibre reinforced fire protection panels. The honeycomb core consists of mineral highly-filled, non-combustible papers. At Wood Research Munich, thin fire protection panels for top layers were developed; at PTS, papers for middle layers were developed. This new lightweight construction material, as well as cutting down on weight, reduces costs on raw material and energy giving it a high marketing potential. On October 15, 2013, Wood Research Munich in association with PTS received the Design + Technology Gold Award for the development of these prototypes in the category Material at the exhibition Materialica, which takes place annually in Munich.
|
Duration
|
June 2011 - June 2013
|
People
|
Hendrick Buddenberg
|
Funding
|
Bundesministerium für Wirtschaft über Arbeitsgemeinschaft industrieller Forschungsvereinigungen (AiF)
|
|
|