Your search resulted in 141 documents. Displaying 25 entries per page.
Laboratory evaluation of anti-sapstain formulations
1989 - IRG/WP 3510
Four formulations were tested for their efficacy in controlling molds and sapstaining fungi on wood according to the Standard-II of Japan Wood Preserving Association (JWPA). Relative efficacy was compared on the basis of visual rating of the fungal growth on the treated and untreated wood surfaces when the wood specimens were exposed to each monoculture of 5 test fungi at 26±2°C and 70-80% for 4...
K Tsunoda
Toxic wood preserving chemicals in the environment: Kenya - a cause for concern
1998 - IRG/WP 98-50101-17
The uncontrolled release of wood preserving chemicals into the environment, in most African countries, is discussed. Kenya has some 25 wood preservation plants, 23 of which use formulations of Copper- Chrome-Arsenate (CCA). The bulk of treated timbers consists of poles and posts used in ground contact. Poor fixation of CCA elements are associated with the species used, Eucalyptus saligna and Acaci...
R Venkatasamy
Qualitative and quantitative assessment of chemicals used for wood durability improvement by Near Infrared Spectroscopy
2006 - IRG/WP 06-20349
The Near infrared spectroscopy (NIRS) could be a suitable technique to assess chemicals used for wood durability improvement in the forest products industry. NIRS methodology can be used to obtain results more quickly, less costly and without damaging the wood. In this study, wood samples selected from heartwood and sapwood of Maritime Pine (Pinus pinaster) were prepared to assess the artificial d...
S Zahri, F Charrier, H Baillères, B Charrier
Laboratory test of blue stain control by chemicals
2007 - IRG/WP 07-30430
8 chemicals and some mixtures against Botryodiplodia theobromae Pat., Fusarium verticillioides(Sacc.)Nirenberg, Trichoderma harzianum Rifai, Trichoderma viride Pers., and Penicillium purpurogenum Stoll were conducted in laboratory by inhibition zone in the paper. The results were shown that: CBZ and benomyl as well as copper oxine alone are much high efficacy for inhibiting most of the 5 fungi tha...
Zhijuan Wang, Zehui Jiang, Mingliang Jiang, Chungen Piao
Preservative treatment of strips of Bambusa balcooa by soaking process using Borax-Boric acid
2008 - IRG/WP 08-30478
Bamboo strips made from Borak bamboo (Bambusa balcooa) were treated with 10% borax-boric acid aqueous solution by soaking process. The moisture contents of the bamboo strips were 12%, 20% and 30%. The strips were soaked for one, two, three, four and five days. The penetration of the
solution was investigated by colour test after soaking and drying. Full penetration was observed after three days ...
K Akhter, M W Sheikh, M M Rahman, T A Chowdhury, M H Chowdhury
Biological Performance of Boron-based Chemicals Treated Wood Composites
2009 - IRG/WP 09-40464
In this study, the biological performance of wood-based composites panels treated with boron containing chemicals against to a fungus was determined. Boric acid, borax, zinc borate and agricultural borate (Tarım-bor™), developed and patented by National Boron Research Institute, were mixed with wood chips or fibers and then particleboard, medium strand board and middle density fiberboar...
Ü C Yıldız, H Kalaycıoğlu, S Yıldız, A Temiz, E Tomak Dizman, A Çavdar Dönmez
The Effects of Some Fire Retardant Chemicals on the Decay Resistance of Medium Density Fiberboard (MDF)
2010 - IRG/WP 10-30536
The objective of this study was to determine the decay resistance of Medium Density Fiberboard (MDF) treated with 5% and 10% concentration of various fire retardant (FR) chemicals. Experimental panels were produced using by melamine-urea-formaldehyde (MUF) resins having 10%, 15% and 20% of melamine content. MDF specimens were subjected to decay resistance test performed according to modified EN 11...
D Ustaömer, M Usta, Ü C Yildiz, S Yildiz, E D Tomak
Design, synthesis, characterisation and effectiveness of ‘Locked-in-Boron’ chemicals for H3.2 level of wood protection
2011 - IRG/WP 11-30577
Boratrane molecules with five-membered and six-membered molecular ring systems, and with various ring substituents were synthesised, characterised and formulated for wood treatment for accelerated laboratory bioassays using wood decay fungi as test organisms. Six-membered ring boratranes showed lower efficacy in laboratory assays than five-membered ring boratranes. One alkyl-substituted boratran...
R Franich, H Kroese, S Gallagher, S Hill, B Kelly, G Billett, R Meder, W Rae
Fire performance of the wood treated with retardant
2012 - IRG/WP 12-40591
To prepare the eco-friendly fire retardant wood, Japanese red pine (Pinus Densiflora), hemlock (Tsuga Heterophylla), and radiate pine (Pinus Radiata) were treated with inorganic chemicals, such as sodium silicate, ammonium phosphate, and ammonium boric acid. Different combination and concentration of those chemicals were injected by pressure treatment methods. The electron-beam treatment was used ...
Jong In Kim, Mi-ran kang, Sang bum Park, Dong won Son
Using Commercial Water Repellent Chemicals on Wood Protection
2014 - IRG/WP 14-30656
Lately, researchers have been looking for process and products that use environmental friendly technologies in wood protection. These sorts of innovations on wood protection should be carried out for wood evaluated at outdoor conditions. Using water repelling chemicals is one of those innovations which improve wood durability and dimensional stability by decreasing content of moisture.
In this ...
G Köse, A Temiz, S Demirel, O E Özkan
State of the art of industrial wood protection in Portugal
2016 - IRG/WP 16-30703
This work intended to give a perspective of industrial wood protection in Portugal. A survey was made of the companies treating wood mainly for use classes 3 and 4 such as autoclave treatments with biocides and wood modification procedures. Currently there are 23 companies with 33 production plants with an autoclave installed for wood preservation by impregnation. There are also two companies prod...
L Nunes, J Carmo, J Vicente, B Esteves
Decay Resistance of MDF Manufactured with Huntite- Hydromagnesite and Zinc borate
2017 - IRG/WP 17-30710
The objective of this study was to evaluate the effectiveness of some mineral based fire retardants on decay resistance of Medium density fiberboard (MDF). Two mineral based chemicals containing (Huntite/Hydromagnesite) and zinc borate (ZB) were used at two different concentrations for panel manufacturing. Decay test of samples was performed according to EN 113 standard method. At the end of the t...
U E Başer, D Ustaömer, Ö Özgenç
Response of Terminalia mantaly H. Perrier wood to beetles tunneling in Southern Nigeria
2018 - IRG/WP 18-10918
Terminalia mantaly (TM), is extremely susceptible to beetles attack, as evidenced by the many scars and/or tunnels on nearly all the trees in the Southern Nigeria. However, information on the responses of wood to insects tunnelling is poorly known for tropical species. To examine the response of TM stem wood to beetles tunnelling in the University of Port Harcourt, we scheduled field observational...
G A Adedeji, U Zakka, A A Aiyeloja, A I Ochuba
Tree bark as a renewable source of wood protection materials for building applications (BarkBuild)
2023 - IRG/WP 23-30792
The BarkBuild project aims to address climate change mitigation by developing new, sustainable, and long-lasting wood building materials with low environmental impact. The project focuses on developing bark-based wood protection and building formulations that demonstrate technical performance, safety, and sustainability in both outdoor and indoor applications. The research objectives of the projec...
A Treu, M Sipponen
Exploring bio-based chemicals in the residual stream from the thermal wood modification process
2024 - IRG/WP 24-30799
Numerous chemical-free processes have emerged in the wood processing industry to enhance the durability and optimize the service life of wooden elements exposed to exterior conditions. One such method, the hygrothermolytic modification process, patented as FirmoLin®, represents an industrial treatment for thermal modification of wood. This involves subjecting solid wood to a pressurized unsaturat...
R Herrera, W Willems, W Pajerski, A Selmanović, A Sandak
Influence of the substitution of phenol with lignin cleavage products in phenol-formaldehyde impregnation resins for wood modification on the fungal decay resistance and impregnation depth
2024 - IRG/WP 24-30805
The impregnation modification of wood with phenol-formaldehyde (PF) resins increases the woods dimensional stability and resistance against fungal decay. However, to decrease the usage of non-renewable resources, the substitution of phenol has been a topic of scientific interest. Lignin is a currently underutilized resource with a chemical structure that contains phenolic units. For adhesive appli...
J Karthäuser, L Tarentino, A Treu, H Militz, G Alfredsen