IRG Documents Database and Compendium


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Thermal stability of a wood protective biofinish and the influence of flame retardants on Aureobasidium cells
2017 - IRG/WP 17-30716
In general there is an increasing need for sustainable resources, including sustainable building materials. Wood is one of these sustainable resources and is more used as an outdoor building material. Since unprotected wood will usually be degraded during outdoor exposure, many different protection systems are available on the market. Protection systems containing biocides however might create obs...
S Rensink, E A M Klein Rot, M F Sailer


Termite resistance of wood-plastic composites made with acetylated wood flour, coupling agent or zinc borate
2018 - IRG/WP 18-10917
There is little published scientific literature on the laboratory or field testing of wood-plastic composites (WPC) against termite attack. Therefore, the objective of this research was to investigate termite resistance (both laboratory and field) of 5 different extruded WPC blends of 50% western pine wood flour (WF) and high-density polyethylene (HDPE), and untreated pine solid wood. The study in...
R E Ibach, Y S Hadi, C M Clemons, S Yusuf


Effects of wood protecting biofinish and linseed oil on fire behaviour and leachability of the fire retardant
2018 - IRG/WP 18-30728
A wood protecting biofinish is based on a protective and decorative fungal-based coating and a linseed oil impregnation (called Xyhlo biofinish). This biofinish enables the long-term use of wood in outdoor applications without using toxic chemicals. The fire resistant properties of materials used in buildings are very important. Since Xyhlo biofinish is relatively new, only little information is ...
S Rensink, E J van Niewenhuijzen, M F Sailer


Wood-Plastic Composites preservation against fire: Nanofillers as fire retardant alternative
2018 - IRG/WP 18-40843
The purpose of this study is to improve fire resistance of Wood-Plastic Composites (WPCs) by adding inorganic nanofillers. Indeed, the main components of WPC, namely wood and polymer are both flammable materials despite the fact that WPCs are used in the field of construction. The effect of nanofillers on fire retardancy of Wood-High density polyethylene Composites was studied with three nanofille...
D Ben Ammar, A Koubaa, S Migneault, H Bouafif


The development of a suitable fire retardant for Radiata pine and other species
2019 - IRG/WP 19-30744
The use of fire retardant chemicals, with the overarching aim of creating a safer environment is not a new one, however it is generally under-developed and is often afflicted with an image of environmental and health issues and misperceived high costs. There is an ever-increasing need and desire for effective fire retardancy in timbers to inhibit or suppress the combustion process. This is paramou...
B R Derham, M R Fortune


An overview of recent studies involving the thermal modification of hardwood species
2019 - IRG/WP 19-40869
This paper outlines recent activities related to the thermal modification of hardwood species, and particularly to tropical hardwood species. Timber demand is ever increasing, but this is being limited by the necessity to protect virgin forest stands. As such, the majority of supply of popular species is being met from juvenile short rotation stands. The limited age from these stands often plays a...
D Jones, M Gaff, F Kacik


Yellow birch fire-protection using polyelectrolytes complexes
2020 - IRG/WP 20-30755
Fire protection has been a major challenge in wood construction for many years. The demand for high-performance, environmentally friendly treatments respecting the physical and chemical characteristics of the material has been accentuated in recent years. Halogenated fire-retardant (FR) compounds were commonly used from the 70’s for their low-cost and high efficiency. They are able to form radic...
M Soula, F Samyn, S Duquesne, V Landry


Evaluation of weathering and termite resistance of the Myoung-oil as a Korean traditional coating agent
2022 - IRG/WP 22-10996
This study investigated the applicability of Myoung-oil (MO) as an eco-friendly preservative of Korean wooden cultural properties and buildings. Wood test specimens painted with various concentrations of MO were exposed in the external environment. Then color change and wettability of the wood surface were evaluated and compared depending on the exposure time. As a result of exposure for 12 months...
S-M Yoon, Y Park, W-S Jeon, H-M Lee, J-G Park, K Dal Nam, W-J Hwang


Effects of Borax and Boric Acid as Fire Retardants on the Resistance of Pterygota macrocarpa Wood to Fire Tests
2022 - IRG/WP 22-30770
The combustible nature of wood as a building material, when exposed to hazards of fire underscores the reason for fire retardant treatments. Pterygota macrocarpa wood is commonly used by builders in Nigeria for roof and other structural applications. Therefore, this study was carried out to assess the effect of Borax and Boric acid on the fire-retardant properties of P. macrocarpa wood. Wood sampl...
J M Owoyemi, O Apogbona, T O Akinwamide


Effects of phosphoric acid and diammonium phosphate treatments on the physical and fire-retardant properties of five selected Nigerian wood species
2024 - IRG/WP 24-20713
Wooden products in buildings are major sources of fuel for fire outbreaks. Effects of phosphoric acid and diammonium phosphate treatments on the physical and fire-retardant properties of wood species commonly used in buildings were evaluated. The timber species utilized in this study were sourced from the sawmill sector located in Akure, Nigeria, encompassing Brachystegia laurentii, Khaya ivorensi...
J Owoyemi, T O Akinwamide, O M Ibrahim, E A Iyiola


Investigation on the use of whey ultrafiltration permeate as a biosourced agent of wood protection
2024 - IRG/WP 24-20718
The ever-growing demand for sustainable materials has driven research toward innovative strategies in both the fields of material science and environmental management. Wood is a natural composite that is attracting more and more attention due to its high physical strength, great machinability, aesthetic appeal, and low price as a renewable and biodegradable resource. It has a long-standing history...
A Keralta, J Winninger, J Chamberland, V Landry


Towards eco-friendly fire retardant of wood - exploring fungal biomineralization
2025 - IRG/WP 25-11052
Timber is a strong, durable, aesthetically pleasing and sustainable building material but its combustibility represents a safety threat. Commonly used fire and flame retardants are often environmentally unfriendly, while safety cladding is labour intensive and covers the wood, decreasing the aesthetic appeal of the building. Mineralisation of wood with calcium carbonate has been shown to be a prom...
K Butina Ogorelec, A Gubenšek, A Sandak


Securing Flame Retardancy in Wood: Durability After Artificial and Natural Weathering Test
2025 - IRG/WP 25-20738
The outdoor use of wood is often limited by challenges such as dimensional instability, vulnerability to fungal decay, and high flammability. Traditional flame retardant treatments improve fire resistance but suffer from significant leaching under environmental exposure, reducing their long-term effectiveness. This study introduces an innovative solution by integrating flame retardants with DMDHEU...
M Wu, L Martin, H Militz


A novel anti-fungal wood crack repairing agent based on CQDs/PVA
2025 - IRG/WP 25-20744
Wood is a sustainable material, but its tendency to crack and decay poses a challenge for its applications. In this study, we developed a combination system of nitrogen-doping carbon quantum dots (N-CQDs) and polyvinyl alcohol (PVA) to repair wood cracks. Rather than employing the conventional repairing methods such as filling cracks with sawdust and petroleum based-adhesives, this technique can m...
X Zhao, Z Zhang, Y Peng, W Wang, J Cao


Investigation of a commercial fire-retardant additive on particleboard properties
2025 - IRG/WP 25-20755
Fire resistance of wood-based panels is in addition to mechanical and sorption properties, an important property when considering its usability for construction applications. Increased fire resistance is achieved through fire retardant addition during panel production or by spraying fire-retardant on already finished panel. A potential downside of fire-retardant addition during panel production ca...
D Jones, S Medved, M Lawther


Optimising properties of citric acid-sorbitol bonded particleboards with added ammonium dihydrogen phosphate as fire retardant
2025 - IRG/WP 25-41033
Due to the adverse health effects of formaldehyde-based adhesives and their fossil origin, there is an ongoing search for appropriate bio-based adhesives for particleboards. Although there are some possible solutions, their use in construction is limited partly due to their low moisture resistance and flammability. The latter can be improved by adding various fire retardants. A particleboard with ...
L Kopač, S Medved, B Lesar, M Humar


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