Your search resulted in 69 documents. Displaying 25 entries per page.
UV-curable coatings developed for aesthetic and biological protection of wood outdoors
2017 - IRG/WP 17-40821
…order to mimic outdoor exposure, two types of artificial ageing were applied to coated wood (immersion and artificial weathering) before exposure to the insects. The results demonstrated that all aged coated samples were not attacked by the insects.
C Reynaud, A S Schuller, M Kutnik, L Podgorski
Development of a new method for wood hydrophobizing and fixation of copper compounds by chemical hardening of vegetable based modified oils
2016 - IRG/WP 16-40754
…puteana and Trametes versicolor after accelerated ageing according to EN 113. Maximal mass loss varies from 1 % to 10 % and allows the utilisation of the treated wood up to use classes 2 and 3 according to EN 335. Tests with soft rot fungi show that the mass loss, which normally varies from 21 % to 36°% for…
C Swaboda, M Fischer, K Jacobs
Influence of artificial and natural weathering on water exclusion efficacy of wood
2015 - IRG/WP 15-20559
…improved with proper hydrophobic treatment. Different ageing agents have ununiformed influence on the WEE. The highest decrease of WEE was determined after artificial and natural ageing. This is somehow expectable, as both ageing reflects synergistic effect of different factors.
M Žlahtič, M Humar
Durability of reaction to fire performance of FRT wood products in different end use applications – Methods and results
2015 - IRG/WP 15-40705
…over time has been performed. It includes accelerated ageing according to different procedures and natural weathering up to ten years. Main conclusions are:
- The hygroscopic properties are unchanged compared to untreated wood for most commercial FRT wood products
- The reaction to fire properties of FRT wood…
B Östman, L Tsantaridis
Wood treatment with organosilanes – perspective for IPBC stabilization
2014 - IRG/WP 14-30641
…to use (RTU) formulation was subjected to appropriate ageing procedure. The chemical analysis was performed to determine the IPBC concentration in RTU formulation and in the treated wood. The biological examination was performed against microfungi (A. niger, T. viride, P. variotii) and wood destroying fungi (C.…
W Perdoch, B Mazela, A Waśkiewicz
Fire resistance of wood treated with potassium carbonate and silanes
2014 - IRG/WP 14-30657
…MFT. The fireproofness effect has been reduced due to the ageing procedure and displayed 60% of wood mass loss.
It has been shown that some selected silanes or their blends with siloxanes, superficialy applied on treated wood, allowed to retain PCU in wood and maintain its fireproofness. Wood mass loss resulting…
B Mazela, M Broda, W Perdoch
Extraction and analysis of DNA from green and seasoned timber as basic methods for determination of wood species and origin
2013 - IRG/WP 13-20523
…information about the influence of wood processing and ageing on DNA quantity and quality.
K Jacobs, H Mende, W Scheiding
Performance of biocide-free preservative-protective systems modified with organosilicon compounds
2013 - IRG/WP 13-30628
…of wood properties related to water soaking, durability to ageing including water and UV radiation as well as resistance to fungi and microfungi. The study has shown that wood surface treated with the preservative-protective systems containing silanes demonstrated increased hydrophobicity, hence higher resistance to…
B Mazela, P Hochmańska, T Krystofiak
Relevance of natural pre-weathering for laboratory decay tests with native, modified, and preservative-treated wood
2013 - IRG/WP 13-20522
…mass loss with a mini-block test (Bravery 1979) following ageing with either leaching (EN 84) or natural weathering. The aim of this paper is not focussing on the durability (and definitely not on the efficacy) of any treatment but to highlight the differences in durability between naturally weathered samples and…
A Pilgård, C Brischke, L Meyer
Evaluation of an optimized industrial process aiming to improve the natural durability and mechanical behavior of bamboo for outdoor use
2011 - IRG/WP 11-40554
…out before and after applying different accelerated ageing procedures (ageing cycles traditionally applied to wood based panels, exposure to UVs, water spraying and temperature variations). The resistance of heat treated woven bamboo against wood decaying fungi was comparable to “durable” wood species. The…
F Simon, M Kutnik, I Le Bayon, G Moisset, V Gatimel
Methods for Studying Penetration Depth of Wood Protection Products
2010 - IRG/WP 10-20432
…the test takes 8 or more months to carry out, artificial ageing procedures have evolved in order to standardize and speed up the procedure. Small changes in a formulation will often change a products physical parameters and especially its ability to penetrate into wood. It is therefore desirable to develop a method…
K Hansen, L Sites, D D Nicholas
The resistance of wood coated with different solvent-borne paints against colonisation by decay fungi
2009 - IRG/WP 09-40468
…The part of samples were subjected to accelerated ageing according to the EN 84 standard. The discussed commercial paint systems were typical stains or penetrating oil-based products, with or without biocides.
B Mazela, P Hochmańska
Natural Weathering of Coated Oil Heat Treated Wood
2007 - IRG/WP 07-30440
…sub-alpine and alpine climate. The influence of natural ageing on surface systems was evaluated after one year of exposure. It was stated that in terms of surface damages (cracking, flaking, mould growth) the coated oil heat-treated wood performed better then the painted non-modified wood. In terms of colour…
M Petric, B Kricej, M Pavlic, A Rapp
Fungicidal properties of wood tar being a side product of pyrolysis of previously treated wood with preservatives
2004 - IRG/WP 04-30340
…with the use of the short agar block method and the ageing test according to the standard PN-EN 84. It was found that wood tar being a product of pyrolysis of used wood which was previously treated may be a potential preservative for wood protection or a component of preservatives. However, better fungicidal…
B Mazela, M Kielczewski, W Grzeskowiak
Accelerated weathering test for the evaluation of wood preservative efficacy
2003 - IRG/WP 03-20262
Wood samples treated with ammonium copper quat (ACQ-1900 and ACQ-2200), Chromated copper arsenate (CCA), Tanalith E 3491 and Wolmanit CX-8 have been studied in accelerated weathering experiments.
The weathering experiment was performed by cycles of 2 hours UV…
A Temiz, M Eikenes, Ü C Yildiz, F G Evans, B Jacobsen
Susceptibility of harvested softwoods to infection by sap-staining fungi
2002 - IRG/WP 02-10435
…volatile compounds within the timber. The effect of log ageing may also affect sap-stain susceptibility. The importance of some of these factors and the composition of the sap-stain community from the five timber species will be investigated in further work.
E J Young, R A Eaton, J F Webber
Cyclic delamination analysis of preservative-treated wood/FRP interfaces
2002 - IRG/WP 02-40244
Wood preservative chemicals can interfere with adhesive properties when bonding wood laminates or wood/FRP (Fiber Reinforced Polymer) laminate composites. In this work we studied the effects of various wood preservative treatments, and pre- and post-treatment…
C Tascioglu, B Goodell, R Lopez-Anido
Assessing the importance of degradation mechanisms on the loss of effectiveness of wood preservatives
2000 - IRG/WP 00-20193
Accelerated ageing systems developed for application to samples in the laboratory prior to biological tests, should reflect those natural deterioration processes that are likely to occur in the hazard classes defined in EN 335-1. Losses through evaporation or the effects…
E D Suttie, R J Orsler, T Dearling
Chemical analysis of TnBTO in lap-joints
1999 - IRG/WP 99-20173
…SMT4-CT96-2135) on field tests out of ground contact and ageing methods. The results reported here are part of the work on the experimental lap-joint standard (ENV 12037). TNO investigated the TBTO content of 32 lap-joints by analysing the tin content of 90 samples. The lap-joints were treated with two different…
A Voss, P Esser, W L D Suitela
Chemical analysis of wood waste - The problem of sampling
1999 - IRG/WP 99-20168
…secondary changes due to leaching, evaporation and ageing of active ingredients during service might contribute to an even more uneven distribution. Thus, analytical results can deviate extremely depending on the kind of sampling carried out. The smaller the sample the higher the deviations. Due to this, the…
A Peylo, R-D Peek
An appraisal of methods for environmental testing of leachates from salt-treated wood; part 1
1998 - IRG/WP 98-50115
…the objectives and characteristics of the EN 84 ageing test, the results reported here justify the support and upgrading of this procedure as an early stage leaching method within the standard efficacy testing of new or renewed wood preservatives.
G M F Van Eetvelde, M Stevens, F Mahieu, H-W Wegen, A Platen
The effect of alternative pre-conditioning procedures on the durability of wood based board materials to decay fungi
1997 - IRG/WP 97-20105
…is used to remove this effect. A variety of alternative ageing procedures have been studied, including natural weathering, leaching and evaporative procedures, to determine the most appropriate pre-conditioning protocol for the decay test. Our results show that there are procedures which are more efficient, and…
S F Curling, R J Murphy, J K Carey
New research data confirming the suitability of bifenthrin as a wood preservative
1996 - IRG/WP 96-30116
…Hylotrupes bajulus, after both leaching and evaporative ageing. Results of penetration tests with water and solvent based formulations, applied by brushing, dipping and double vacuum confirmed the good performance of bifenthrin in wood of Scots pine and beech. The new results confirm the promising characteristics…
S Shires, P Héloir, B Chen, G Rustenburg
Assessing the performance of wood preservatives from biological tests - the European approach
1994 - IRG/WP 94-20040
…be applied in each test, the need for pre-leaching or pre-ageing and the rationale for deriving a value (the biological reference value) for the minimum amount of product deemed effective in each test. The highest biological reference value determined from all the tests is defined as the critical value and it is…
A F Bravery
Effects of various preservative treatments on the mechanical and physical properties of plywood
1993 - IRG/WP 93-40007
…of the amount of wood failure after different ageing procedures.
J Van Acker, M Stevens