Your search resulted in 3488 documents. Displaying 25 entries per page.
Treatment of Scots pine wood with oil in water and water in oil emulsion systems: Effects on boron leaching and water absorption
2010 - IRG/WP 10-30535
The aim of this study was to investigate the water absorption and water repellent efficiency of oils and oil water emulsions [oil-in-water (O/W) and water-in-oil (W/O)] and possibilities of reducing the amount of boron leaching from treated wood. Scots pine wood samples treated with waste or sunflower oil and water formulations contained 3%BA. The level of water absorption and water repellent effi...
E D Tomak, Ü C Yildiz, A Can
A Comparison of the Performance of Related Copper Based Preservatives against Soft Rot
2010 - IRG/WP 10-30540
The performance of pine and beech wood treated with either a soluble copper + quat (ACQ type D) preservative system or a particulate copper + quat system was evaluated in unsterile soil using the European standard ENV 807 soft rot decay test procedure.
In addition, to compare soft rot performance of soluble and particulate copper directly without the influence of co-biocides, beech and pine test...
M Ray, D Dickinson, K Archer
Field trials of wood preservatives in UC3 retention. Part 1. Durability results after 13 years in and above ground
2010 - IRG/WP 10-30548
In 1996 an extensive field trial program was set up in order to obtain more data on wood treated with chromium and arsenic free preservatives in Use Class 3 retention. Apart from durability in and above ground, other features were also assessed, e.g. discoloration by staining fungi, depletion of active ingredients, weathering and corrosion of fasteners in con¬tact with the treated wood. Wood spec...
M Westin, J Jermer, M-L Edlund, P Larsson Brelid, I Johansson
Studies on Effect of pH on Copper Availability in Copper-Based Preservatives
2010 - IRG/WP 10-30549
Laboratory methods have been employed to investigate the pH effect on the copper solubility of basic copper carbonate. The pH was controlled using two different approaches. One was with the adjustment of pH of the solutions by acid or base using sulfuric acid or sodium hydroxide until the solution equilibriums were obtained for each defined pH. A second approach was to control pH with buffer sol...
L Jin, P Walcheski, A F Preston
Evaluation of formulation type on the efficacy of bifenthrin as a glueline termiticide for veneer based wood products
2010 - IRG/WP 10-40486
Field trials were carried out in Australia on Coptotermes acinaciformis to evaluate the efficacy of various bifenthrin formulations. One trial tested plywood made by Zelam at their research facility in New Zealand and compared three emulsifiable concentrate formulations (EC), a suspension concentrate (SC) and an encapsulated formulation (CS). A second trial compared laminated veneer lumber (LVL)...
P Lobb, A Siraa
Extruded wood plastic composites based on ACQ and MCQ-treated wood materials
2010 - IRG/WP 10-40495
This paper deals with wood plastic composites manufactured using ACQ and MCQ-treated wood fibers recovered from a wood treatment plant. The goal was to investigate the effect of coupling treatments on the properties of manufactured wood plastic composites (WPCs) through injection molding and to manufacture co-extruded WPC with treated wood fibers. The result demonstrated sound mechanical propertie...
Qinglin Wu, Fei Yao, K Ragon, J Curole, M Voitier, T Shupe
Reconstruction and Restoration of some Zagreb’s Wooden Heritage buildings
2010 - IRG/WP 10-40498
In the last ten years, the huge amount of wooden buildings houses and objects of Zagreb’s cultural heritage were restored with fine workmanship. As the wood was one of the most used construction materials, the scientists and specialists from the Faculty of Forestry also took part in those restoration and reconstruction processes. The aim of this article is to inform and advice the restorers on t...
R Despot, M Hasan
An investigation on some physical properties of oil heat treated poplar wood
2010 - IRG/WP 10-40509
In this study some physical properties of small samples (20×20×20 cm) of poplar wood
(Populus nigra var.pyramidalis) after oil heat treatment with linseed oil was investigated. Two time levels (4.5 & 6 hours) and three temperature stages (180,200 & 220°C) were selected. The results of this study showed significant differences in effects of treatment temperature on physical properties of wood....
B Bazyar, D Parsapajouh, H Khademiesalam
Biological degradation of acetylated wood after 18 years in ground contact and 10 years in marine water
2010 - IRG/WP 10-40522
This paper addresses the resistance to biological degradation of acetylated wood.
Firstly, it presents results from an EN 252 test after 18 years’ exposure. The test is still running in Nordic NWPC test fields, Simlångsdalen in Sweden and Viikki in Finland. Results from this test were presented after 5 years’ exposure ( IRG/WP 97-30139), and showed that the resistance of acetylated wood wit...
P Larsson Brelid, M Westin
Silicon compounds as additives improving alkyd-based wood coatings performance
2010 - IRG/WP 10-40531
The reactivity of cellulose with solvent-born alkyd-based wood coatings supplemented with organosilanes was analyzed. Structural analysis of cellulose subjected to the reaction with organosilanes and following extraction with water was performed using Fourier-transform infrared spectroscopy (FTIR). The analyzed IR spectra comprise bands 1250 cm-1 typical for the SiC group and 800 cm-1 typical for ...
B Mazela, I Ratajczak, K Wichłacz-Szentner, P Hochmańska
Comparative Study of Heat Treatment of Beech Wood in Hot Water and Steam Medium
2010 - IRG/WP 10-40536
Heat treatment of wood is an effective method to improve the dimensional stability and durability against biodegradation. Heat treatments of beech wood in 2 different mediums (hot water and steam) in 180ºC were compared in physical, mechanical and anatomical properties. Mass loss in hydrothermally treated wood was higher than hygrothermally treated samples. Mechanical properties (MOR, MOE and CS)...
A Talaei, K Yaghoobi, A N Karimi
Theoretic discussion on the way and driving forces of moisture migration in wood during vacuum drying
2011 - IRG/WP 10-40538
Most of parameters in conventional drying cannot explain a lot of phenomena appeared in vacuum condition, so it is necessary to further explore the moisture migration way and driving forces in wood under vacuum condition. For the water movement channel in wood is very narrow, the characteristic of heat and mass transfer in wood is similar to that in microscale. This article applies theory of liqui...
Zhengbin He, Xueli Yao, Liqiong Chen, Songlin Yi
Increased sustainability for wood construction by recycling
2011 - IRG/WP 10-50275
Wood is the only renewable and certified industrially available construction material that has also unique opportunities as carbon storing, energy-independent and generally approved resource. However, if burning into energy is not counted, there are only few viable and competitive solutions for re-use or recycling of various wood products. The biggest challenge related to recycling of wood product...
H Heräjärvi, I Pirhonen, T Räty, P Saukkola
Sample Origin Influencing the Leachability of Wood Preservatives
2011 - IRG/WP 11-20474
The aim of this study is to see if the raw material influences fixation and leachability of wood preservatives. Moving towards more eco-friendly and –concious society, the wood industries must adjust itself to new rules and regulations. Greener solutions in wood protection are being tested and introduced, older systems are being improved, but questions still arise concerning some elements curren...
K Kängsepp. E Larnøy, P Meier
The study of fungicidal values und sorption processes of ionic liquids- potential wood preservatives on soils
2011 - IRG/WP 11-30572
In the paper, the fungicidal activity of new ionic liquids structures, N,N-dimethylalkylamines derivatives, containing a spacer built of 7 or 10 methylene groups with nitrate(V) and tetrafluoroborate anions, didecyldimethylammonium and benzalkonium nitrate(V) were presented. The research was also conducted on the sorption of cations of ammonium ionic liquids on five types of podzolic, humic alluvi...
W Przybylska, J Zabielska-Matejuk, A Stangierska, A Skrzypczak
Effectiveness of Water Based Bentonite-Borate Slurry for In-situ Remedial Protection of Historic Wooden Piles: The Eurobor Protocol, Part 2
2011 - IRG/WP 11-30574
The study of the biocide product Eurobor®, water mixture of boric acid, borax and sodium bentonite, aimed to verify previous findings regarding borates penetration from a clay-water mixture of foundation timber. The product was applied on samples from 100 year old timber foundation from the city of Göteborg. Although in ground for this long the timber was in acceptable god condition due to groun...
M. Theorin, K. Fimmerstad, K-M. Bandh
The potential of silicone-based formulations to enhance wood properties through industrial treatment for outdoor use
2011 - IRG/WP 11-30578
High hygroscopicity is one of the main weaknesses of wood as far as its susceptibility to biodegradation, and specifically to fungal decay. New wood preservation technologies are constantly entering the wood protection market, competing with traditional, biocide-based preservation. Silicones are commercially used as hydrophobic agents on stones and concrete. They belong to the restricted number of...
F Simon, F Marchal, F Pochon, M Kutnik, I Le Bayon
Effects of Heat-Treatment in Hot Water and Steam Mediums on Gas Permeability of Beech Wood
2011 - IRG/WP 11-40557
Heat-treatment, as a major method of wood modification, improving dimensional stability, and natural durability, has been studied greatly from different aspects. The effect of heat-treatment on gas permeability, as an important physical property of wood, in two different mediums of hot water and steam, as well as in two buffers of 7 and 8, is the main topic of the present study. Hydrothermal treat...
H Reza Taghiyari, A Talaei, A Karimi
Copper Migration from Micronized Copper Preservatives Treated Wood in soil contact:
2011 - IRG/WP 11-50280
Emerging formulations of preservatives made with micronized basic copper carbonates with azoles and/or quat to control copper tolerant fungi have been used to replace formulations containing soluble copper to reduce the leaching of copper and the corrosion of metal in contact with wood. This study proposes to use laboratory soil leaching test AWPA standard (E20-08) to estimate the amount of copper...
Lei Wang, D P Kamdem
The Technical Criteria on Biological Evaluation of Wood Preservatives for Use Category C4.1 in Southern China
2012 - IRG/WP 12-20481
According to the Regulations on Pesticide management of the People's Republic of China, wood preservatives belong to agrochemicals. The establishment of registration system on wood preservatives would be benefit to management of preservatives, including the market entrance and safety insurance to the human beings, livestock and the environment associated by the application of these preservati...
Xingxia Ma, Mingliang Jiang
Determination of Izod Impact Strength on Wood: A Suitable Method to Detect Fungal Decay in Protective Effectiveness-Screenings of Wood Preservatives
2012 - IRG/WP 12-20484
For testing a large number of different substances regarding fungicide properties, the reduction of the decay test duration is advantageous. In the present paper the suitability of a method for testing plastics using an impact testing machine was examined. The results clearly show that the fungal attack of European beech by the white-rot fungus Trametes versicolor leads to a decrease of izod imp...
H Delenk, M Zauer, A Wagenführ
Moisture performance based wood durability testing
2012 - IRG/WP 12-20495
In the frame of a scientific cooperation within the Swedish research program ‘WoodBuild’ comparative field and laboratory durability studies have been carried out by the Technical Research Institute of Sweden SP and Leibniz University Hannover. One objective was to improve test methods as well as evaluation systems in order to facilitate the use of (field) testing for service life prediction. ...
L Meyer, C Brischke, A Pilgård
Effect of an antioxidant on the efficacy of organic wood preservatives in an accelerated soil contact decay test
2012 - IRG/WP 12-30583
In comparison to inorganic wood preservatives, organic biocides in transient carriers are considerably less effective when the treated wood is exposed to soil contact. Various oils are used in some formulations with pentachlorophenol to improve the efficacy. However, use of these oils imparts unacceptable properties to products used in residential applications. Consequently, there is a need to de...
D D Nicholas, J Shi, T P Schultz, L Sites
Smart hydrogels from low molecular weight amphiphilic compounds: toward a solution to decrease leachability and increase efficacy of boron preservatives?
2012 - IRG/WP 12-30589
A new catanionic system associating amphiphilic carnosine (AlaHisC8) and lauric acid forms supramolecular hydrogel at very low concentration. This gel was investigated and we have checked the validity of the concept of hydrogels utilization to reduce boron leachability and to develop new wood protection treatments. Impregnation with 5% aqueous borax solution (w/w) and 0.3% gelator agent (...
F Obounou Akong, P Gérardin, C Gérardin-Charbonnier
Evaluation of Five Novel Organotin(IV) Complexes as Wood Preservatives
2012 - IRG/WP 12-30590
Three selected non durable tropical wood species namely Alstonia scholaris (pulai), Macaranga triloba (mahang) and Hevea brasiliensis (rubber) were chemically impregnated with five novel organotin(IV) complexes using vacuum-pressure treatment method. The objectives of this study were to determine the treatability and efficacy of novel organotin(IV) complexes against white and brown rot decay fungi...
M M Rahman, I Jusoh, M A Affan, A Husaini