Your search resulted in 1362 documents. Displaying 25 entries per page.
Biological resistance of acetylated particleboards exposed to white (Trametes versicolor (and brown (Coniophora puteana) rot fungi
2010 - IRG/WP 10-40534
…conducted to investigate the effect of acetylation on bioresistance of particleboard produced from acetylated wood chips of Fagus orientalis exposed to white (Trametes versicolor (and brown (Coniophora puteana) rot fungi. After 12 hours soaking in acetic anhydride, in order to achieve three level of weight gains,…
M Ghorbani kokandeh, K Doosthoseini, A N Karimi, B Mohebby, H Asghari
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…
Ü C Yıldız, H Kalaycıoğlu, S Yıldız, A Temiz, E Tomak Dizman, A Çavdar Dönmez
Preliminary investigation of biological resistance, water absorption and swelling of thermally compressed pine wood panels
2008 - IRG/WP 08-40396
…of wood. This study evaluated decay and termite resistance of thermally compressed pine wood panels at either 5 or 7 MPa and at either 120 or 150?C for one hour. The process caused increases in density and decreases in thickness of the panels; however, laboratory decay resistance tests using one brown rot…
Ö Ünsal, S N Kartal, Z Candan, R Arango, C A Clausen, F Green III
Effect of different ASAs (alkenyl succinic anhydrides) on the treatment of biological protection of wood in use class 4
2008 - IRG/WP 08-40440
…to degrade the esters in treated wood. In this work, the biological resistance was assessed for each kind of ASA.
C Vaca-Garcia, O Pignolet
Biological Protection of Composite Panel from Moulds and Decay
2007 - IRG/WP 07-10612
…products. This research aimed to explore various potential biological treatments to protect composite panels from biodegradation, and to increase durability of panels for better resistance to mould and decay infection in service.
Dian-Qing Yang, Xiang-Ming Wang, Hui Wan
The effects of chemical modification on the biological properties of alder and spruce particleboards
2007 - IRG/WP 07-40363
…Particleboard specimens were subjected to fungal decay resistance tests performed according to EN 113 standard method using the brown-rot fungus, Coniophora puteana and white-rot fungus, Trametes versicolor. Chemical modified boards demonstrated increased durability against decay fungi. Especially acetic and…
Ü C Yildiz, E Dizman, S Yildiz, A Temiz, M Aslan, E D Gezer
Biological resistance of didecyl dimethyl ammonium tetrafluoroborate (DBF)-treated wood in soil-bed and Basidiomycetes tests
2006 - IRG/WP 06-30393
This study evaluated the decay resistance of treated wood with a new quaternary ammonia compound, didecyl dimethyl ammonium tetrafluoroborate (DBF) in laboratory soil bed and Basidiomycetes tests. Treated sugi sapwood specimens with DBF at various concentration levels were first subjected…
S N Kartal, C Brischke, A O Rapp, Y Imamura
Preliminary screening of a boron based wood preservative for biological efficacy (fungicidal) in treated timber
2006 - IRG/WP 06-30396
The resistance of Pinus radiata D.Don sapwood blocks, treated with a boron based preservative, to attack by five wood destroying fungi (Fomitopsis lilacino-gilva, Coniophora olivacea, Gloeophyllum abietinum (boron resistant), Serpula lacrymans and Perenniporia…
S R Przewloka, J A Hann, P Vinden
Biological Durability of Laminated Veneer Lumber from Durable and Non-Durable Wood Species
2005 - IRG/WP 05-10567
Laminated Veneer Lumber (LVL) was laboratory manufactured using veneers from decay and non decay resistant species in order to evaluate changes in the durability as a result of the LVL manufacturing process, and to test if the mixing of decay resistant species…
P Nzokou, J Zyskowski, S Boury, D P Kamdem
Biological resistance of wood-based composites under protected, aboveground conditions
2005 - IRG/WP 05-20312
…and aspen oriented strand board=OSB) were tested for their resistance against subterranean termites and decay under protected aboveground conditions. The exposure method was previously developed for evaluating performance of sill plates (dodai) in Japanese homes. Ten replicates (10 cm square x board thickness) were…
K Tsunoda
Biological test, AAS and EPR study of copper monoethanolamine complex with quaternary ammonium compounds as a wood preservative
2003 - IRG/WP 03-30321
…good fixation of the copper to the wood and high leaching resistance. EPR results and computer simulations of the observed EPR spectra shows that in Cu-EA aqueous solution the Cu(EA)2(H2O)2 complexes exist and the main coordination plane is not destroyed in impregnating solution and in the wood. In Cu-EA-QAC-BA…
B Mazela, I Polus, S K Hoffmann, J Goslar
The Effect on Biological and Moisture Resistance of Epichlorohydrin Chemically Modified Wood
2002 - IRG/WP 02-40224
…in understanding the role of moisture in the mechanism of biological effectiveness of chemically modified wood. The solid wood had weight gains from 11% to 34%, while the fiber had weight gains from 9% to 75%. After modification, part of the specimens were water leached
for 2 weeks or extracted for 2 hours with a…
R E Ibach, B-G Lee
Biological resistances of wood-metaborate composites using the borax solution system
2001 - IRG/WP 01-30259
…then diffuse-penetrated with Zn2+, Ca2+, or Pb2+ solution. Biological resistances of the composites as well as their leachabilities were evaluated. The precipitates of three kinds of metaborates in the wood proved to be insoluble in water by the leaching test. In the decay test using a brown-rot fungus (Fomitopsis…
Liang Lin, T Furuno
The leachability, biological resistance, and mechanical properties of wood (Pinus sylvestris L.) treated with CCA and CCB preservatives
1999 - IRG/WP 99-30207
…to investigate the effects of fixation temperature on the biological performance of treated wood. The effects of preservative treatment and subsequent redrying at temperatures of 20°C and 70°C on the bending strength, MOE (modulus of elasticity), and impact bending strength of small, clear specimens treated with…
S N Kartal
Biological resistance of steam-compressed wood pretreated with boric compounds
1999 - IRG/WP 99-30190
…additionally required for the protection of wood against biological agents under hazardous service conditions. Boron pretreatment of compressed wood was targeted to a mutual benefit of increasing biological resistance of compressed wood as boron was converted to a more stable form through hydration and dehydration…
M K Yalinkilic, W Dwianto, Y Imamura, K Tsunoda, M Takahashi
Biological and physical properties of phenolic-resin treated wood before and after natural weathering
1999 - IRG/WP 99-40132
Biological and physical properties of phenolic resin-treated particleboards, which were made from fast growing tress and agrowaste as raw materials, were evaluated before and after natural weathering in tropical climate. The particles were sprayed with a…
S Yusuf, Y Sudiyani, H Kajita, Y Imamura, M Takahashi
Biological resistance of wood treated with waterbased resins and drying oils in a mini-block test
1998 - IRG/WP 98-40107
In recent years it was found that the resistance of wood against fungal degradation could be increased by impregnation with an etherificated melamine formaldehyde resin. Using this resin as a reference, a waterbased fatty acid modificated alkyd-resin and two drying-oils were assessed for their…
M Sailer, A O Rapp, R-D Peek
About the water and biological resistance of some new chemically modified wood composites
1997 - IRG/WP 97-40077
…as the dimensional instability, the susceptibility to biological attack, the anisotropy, are due to its complex structure. Research has demonstrated that the chemical modification of wood, meaning the involving of its main chemical components through their reactive alcoholic hydroxyl groups in chemical reactions…
M C Timar, M D Mihai, G Baciu
Resistance of acetylated wood to biological degradation. Evaluation of field test
1997 - IRG/WP 97-30139
…showed that acetylation has a major impact on fungal resistance of wood. The resistance of acetylated wood with an acetyl content of about 20% is in the same range as that of wood of the higher retentions of the reference preservatives. At acetylation levels above 20%, none of the samples was rated higher than…
P Larsson Brelid, R Simonson, Ö Bergman
Biological durabilityof cement-bonded particleboard
1997 - IRG/WP 97-20115
…of its many excellent properties, such as high weathering resistance, sound attenuation, and good acceptance for a range of surface treatments, CBP is widely used as a facade material in Japan. The present study is carried out to investigate the biological durability of CBP. The tested material was a standard…
Qiao Wang, M Takahashi
Melamine resins as preservatives results of biological testing
1996 - IRG/WP 96-40061
…was performed. For the relative assessment of the biological resistance against brown and white-rot fungi were used not only untreated controls of pine sapwood (Pinus sylvestris L.), but also heartwood of European larch (Larix decidua Mill.). Even at the lowest applied concentration of 7.5% resin in the…
A O Rapp, R-D Peek
A new approach to wood protection: Potential of biologically synthesised CuO and ZnO nanoparticle formulation as a wood preservative
2022 - IRG/WP 22-30758
…which are expensive and are not environmentally friendly. Biological synthesis of nanoparticles using plants, fungi, yeast, bacteria and viruses, has been accepted as an alternative approach and is referred to as green synthesis. Utilization of biologically synthesised nanoparticles is a new approach in wood…
Shiny K S, R Sundararaj, N Mamatha
Biological assessment of bio-based phase change materials in wood for construction applications
2022 - IRG/WP 22-40935
Solid wood can serve multi-functionality for energy savings in buildings. The study reveals the results of bio-deterioration and degradation of solid Scots pine wood used to incorporate single or multicomponent fatty acid mixtures as bio-based phase change mat…
S Palanti, A Temiz, G Köse Demirel, G Hekimoğlu, A Sari, M Nazari, J Gao, M Jebrane, T Schnabel, N Terziev
Physical and biological properties of albizzia waferboards modified with cross-linking agents
1995 - IRG/WP 95-40043
Chemically-modified low-density waferboards with cross-linking agents were produced using a fast-growing species of hardwood albizzia (Paraserienthes falcata Becker) as a raw materials and isocyanate resin as a glue adhesive. For the chemical modification, the…
S Yusuf, Y Imamura, M Takahashi, K Minato
The chemical analysis and biological evaluation of wood extractives as potential timber preservatives
1995 - IRG/WP 95-30090
Work involved the biological performance of water and organic solvent soluble extractives of four naturally durable wood species, namely; Matumi, Tamboti, Sneezewood and the Turpentine tree. These timber species are known to be naturally durable against termites and fungi…
P Turner, D Conradie