Your search resulted in 52 documents. Displaying 25 entries per page.
Behaviour of some selective Indian species towards treatment with solvent based water repellent preservative
1984 - IRG/WP 3309
This paper discusses a solvent based preservative using PCP and a water repellent for preserving three species of timber commonly used in India for the manufacture of doors and windows. It examines the method of treatment to achieve desired levels of penetration and retention of the preservative-cum-water repellent, and tests made on these timbers to examine the success of the processing methods a...
V R Sonti, B Chatterjee
Analysis of water repellents in wood treated with water borne formulations using FTIR
2000 - IRG/WP 00-40176
The use of aqueous water repellent emulsion formulations has increased significantly in the wood treatment industry. These products are primarily used to enhance the weathering characteristics of wood products treated with water borne preservatives systems used in exterior above ground applications. They are also used in pole treatments to improve climbing characteristics and in low VOC millwork t...
P J Walcheski, L Jin
An evaluation of the synthetic pyrethroid cypermethrin in organic solvent and emulsion formulations
1984 - IRG/WP 3290
The studies reported indicate that cypermethrin (NRDC 149) has considerable potential as an insecticide for wood preservatives. Cypermethrin appears to be about twice as effective as permethrin. The effectiveness of cypermethrin compared with g-HCH varies depending on the insect species, the phase of the life cycle and size of larva: for example, against mature Anobium larvae cypermethrin is appro...
S J Read, R W Berry
Interactions between water-borne preservatives and emulsion additives that influence the water repellency of wood
1991 - IRG/WP 2374
Incorporation of non-polar additives into water-borne treatments through of emulsion technology can greatly improve the physical characteristics of wood in service. Of specific interest with these emulsions is their effectiveness in reducing the rate of wood swelling. We have observed that the presence or absence of preservatives can often significantly influence the resultant effectiveness of the...
A R Zahora
Influence of hydrophobic agents on the leachability of boron
1995 - IRG/WP 95-30064
Besides its low mammalian toxicity and a broad range of activity towards both fungi and insects, boron shows a high diffusibility, encouraging it to treat wood species of low permeability. However, its difussibility is at the same time responsible for a high risk of leaching, known since long. Nevertheless quantitative data about this process are only rarely available. Therefore, the leaching of b...
A Peylo, H Willeitner
Microemulsion formulations for wood protection chemicals
1993 - IRG/WP 93-30030
A microemulsion is a thermodynamically stable oil-water dispersion system. As a formulation it provides many unique features such as water compatibility for water-insoluble chemicals, formulation stability, good bioavailability and environmental acceptance. This paper discusses the major criteria for the formulations of water-insoluble wood biocides and the comparison in properties between convent...
Bing Yu, L E Leightley
Surface checking of CCA-treated radiata pine decking timber exposed to natural weathering
2000 - IRG/WP 00-40165
A field trial was established at four locations in Australia to assess the effect of CCA and CCA-wax treatment on the checking (cracking) of radiata pine decking timber exposed to natural weathering. Untreated decking timber and timber that had been pressure treated with water acted as controls. After 1 year's exposure the number and sizes of checks occurring in treated timber and control...
P D Evans, P J Beutel, C F Donnelly, R B Cunningham
The development of a new boron-based wood preservative
1995 - IRG/WP 95-30085
The paper describes a new boron based wood preservative for the treatment of green timber. The product offers many benefits over conventional boron diffusion treatment including: 1. high viscosity, high concentration formulation; 2. permits dip treatment of a wide range of sawn board and pole sizes at ambient temperatures; 3. permits full cross section diffusion of borates without block stacking a...
P Turner, D Conradie
Durability of Sugi (Cryptomeria japonica D.DoN ) wood treated in high temperature liquid paraffin
2002 - IRG/WP 02-40221
Sugi(Cryptomeria japonica D.DoN )wood was subject to a heat treatment in high-temperature liquid paraffin for the purpose of improving the resistance against fungi and termites without chemicals. The bath of paraffin liquid, which can provide a uniform heat transfer (±2?), was used at temperatures of 90?,120?and 150?.?ecay resistance according to JIS K 15711) was evaluated using a brown rot fungu...
Y Matsuoka, W Ohmura, S Fujiwara, Y Kanagawa
Algal growth resistance of paints for coating of wood; a laboratory study
1997 - IRG/WP 97-10213
Twelve paints were tested for resistance against algae. In addition, one algicidal compound commercially used for remedial treatments of algal growth on paints was tested for its effectiveness for prevention of algal growth. An agar diffusion bioassay was employed in which paint films on filter paper discs were placed on mineral salt medium and sprayed with an algal suspension containing a mixture...
J Bjurman
"XYLOPHENE ANTI-TERMITES" :A complete range of treatment products against termites
2000 - IRG/WP 00-30230
Dyrup-Xylochimie purpose for several years efficient treatment products for timber and wood materials, with its trade mark : "Xylophèn". As everybody know, termites become an important problem for construction in France. So important that, a national law was voted in May 1999, to define areas where termites are present, in order to protect future landowner. To prevent efficiently termites damages...
L Cubizolles, E Wozniak
Potential use of an emulsified tar oil fraction as a wood preservative: Preliminary technological and environmental assessment
1994 - IRG/WP 94-50028
In order to meet the recent environmental concern specifications of creosote are altered, the B[a]P content is limited and restrictions on the emission of volatile organic compounds (VOC) and higher polyaromatic hydrocarbons (PAH) are expected in some countries. Research has been conducted on an emulsion of a selected tar oil fraction. Using a waterborne formulation opens new perspectives for targ...
G M F Van Eetvelde, R Leegwater, M Stevens
New research data confirming the suitability of bifenthrin as a wood preservative
1996 - IRG/WP 96-30116
Bifenthrin has been further tested against wood destroying insects, and its behaviour in wood has been extensively studied. Bifenthrin proved to be highly effective as a curative and preventative treatment against Anobium punctatum and Hylotrupes bajulus, after both leaching and evaporative ageing. Results of penetration tests with water and solvent based formulations, applied by brushing, dipping...
S Shires, P Héloir, B Chen, G Rustenburg
Protection of wood for above ground application through modification with a fatty acid modified N-methylol/paraffin formulation
2007 - IRG/WP 07-40378
Hydrophobic chemical modification can be regarded as an alternative approach to conventional wood preservation using biocides in order to protect wood in hazard class 3 according the European Standard EN 335-1.
A formulation containing fatty acid modified N-methylol/paraffin and an aluminium salt catalyst was used to change the material properties of wood in order to protect wood from fungal dec...
Nguyen Hong Minh, H Militz, C Mai
Amine Oxides for Use in Wood Protection: II: Water Repellent Agents for Wood
2007 - IRG/WP 07-30426
Wood treated with cetyl and stearyl amine oxides was evaluated to determine its long term water repellency. Comparative water uptake data, generated during two years of outdoor exposure, illustrated that Lonza’s products, Barlox® 18S (N-octadecyl-N, N-dimethylamine oxide) and Barlox® 16S (N-hexadecyl-N, N-dimethylamine oxide), were effective water repellent agents, imparting lasting water res...
Xiao Jiang, L Walker
Fire, flame resistance and thermal properties of oil thermally-treated wood
2007 - IRG/WP 07-40361
Oil thermal treatment, first developed by German scientists, is a promising technology for improving the durability and dimensional stability of wood for outdoor above-ground residential uses such as siding and shingles. The present authors’ previous research showed that 220ºC is an optimal treatment temperature, with 2 hours’ treatment producing wood with significantly improved moisture and ...
Jieying Wang, P Cooper
Influence of Polyvinyl acetate emulsion (PVA) on boron leaching and fungicidal properties
2008 - IRG/WP 08-30451
Boron compounds are very effective fungicides, but unfortunately they leach from wood. In order to improve boron fixation, boric acid, borax were combined with polyvinyl acetate emulsion (PVA). For comparison copper salts were included into this research as well. Selected preservative solutions were chosen for impregnation of Norway spruce wood specimens (Picea abies). Wood blocks were exposed to ...
M Humar, B Lesar, P Kralj
The efficacy of commercial silicones against blue stain and mould fungi in wood
2008 - IRG/WP 08-30471
Scots pine (Pinus sylvestris L.) wood samples were vacuum pressure impregnated with quatsilicone micro emulsion (<40 nm particle size), aminosilicone macro emulsion (110 nm) and silicone macro emulsion with alkyl modified side groups (740 nm) and the resulting material properties were studied. Quatsilicone micro emulsion resulted in maximum bulking (4.8%) and anti-swelling efficiency (21.8%) in...
S C Ghosh, C Mai, H Militz
Termite resistance of some modified wood species
2009 - IRG/WP 09-40449
During the last few decades, researchers worldwide have investigated and developed new treatment techniques to improve intrinsic wood properties. Some of these techniques were introduced to the market recently and are gaining in importance.. Various wood properties of these new materials have been studied intensively. These include physical-mechanical properties (dimensional stability, moisture ...
H Militz, B C Peters, C J Fitzgerald
Use of wax emulsions for upgrading of wood properties
2009 - IRG/WP 09-40451
Waxes are used for treatment of wood surfaces for several decades, predominately as surface treatments, because they did not penetrate into the wood. In order to overcome this issue, water emulsions were applied in present experiment. Five water emulsions of various concentration was used namely; two emulsions of montan wax (LGE, MW1), emulsion of polyethylene (WE1), emulsion of ethylene copolymer...
B Lesar, F Pohleven, M Humar
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
Effects of intumescent formulation of vinyl acetate-based coating on flame-retardancy of thin painted red lauan (Parashorea spp.) plywood
2011 - IRG/WP 10-40537
Using intumescent coatings on wood-based materials is an effective method for fire safety. The intumescent coatings consist of four major components: (1) binder resin (BR), (2) carbonizing substance (CS), (3) foam producing substance (FPS) and (4) dehydrating agent (DA). Previous studies have demonstrated that the formulation of the four components strongly influences the performance of coatings. ...
Chih-Shen Chuang, Kuang-Chung Tsai, Te-Hsin Yang, Ming-Kuang Wang, Chun-Han Ko
Re-use of casting timber
2011 - IRG/WP 11-50283
Re-use of casting timber could be a way of saving timber resources, particularly in countries where most timber for construction purposes has to be imported. The objective of the present study was to investigate residual concrete on casting timber re-used five times. Moulds were made of sections of Norway spruce, untreated and treated with a casting oil and a wax formulation applied by a vacuum-pr...
I Johansson, S Breyne, H Egnell, J Jermer
Preparation of Copper Rosinate Emulsion and Its Resistance against Wood Decay Fungi
2013 - IRG/WP 13-30619
A leaching-resistant water-borne copper preservative was prepared by means of the following three steps: (1) Gum rosin was saponified with potassium hydroxide. (2) The soap reacted with copper sulfate to form copper rosinate. (3) The copper rosinate was emulsified with a mixture of Tween 20 and Span 80. Poplar (Populus ussuriensis) wood was impregnated with 0.5%, 1.0%, 1.5%, or 2.0% of the copper ...
Mingxin Zhang, Shujun Li, Qian Wang, Bo Li, Qiong Wu
Development of Wood Modification – High melting point wax and hot oil treatments
2016 - IRG/WP 16-40768
This study covers an introduction to the projects where new facilities were created for developing wood modification. In this new research environment it is possible to treat wood with versatile equipment. First modifications with this equipment are going to be done in high temperature and pressure using high melting point waxes and hot oils.
Earlier studies, tests and commercial products show...
H Turunen, L Linkosalmi, J Peura, O Paajanen