Synthesis and evaluation of phosphortriamidates in wood for thermal and fungal decay protection

Chen, George C.

doi:10.1515/hf.2008.056

Cited by 7 publications

(6 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A method for the chemical modification of wood was developed that compared phosphoramidates with phosphortriamidates cured at 115 °C (Chen 2008;Lee et al 2004a, b). While the phosphoramidate system provided improved fire and fungal resistance, the phosphortriamidates method failed to provide adequate fungal resistance.…”

Section: Potential Of Dual Fr-and Preservative-(frandp)-treatment Sys...mentioning

confidence: 99%

West Indian drywood termite, Cryptotermes brevis, in Australia: current understanding, ongoing issues, and future needs

Haigh

Hassan²,

Hayes

2022

Australian Forestry

View full text Add to dashboard Cite

Wood is increasingly viewed as a more environmentally sustainable material owing to its low embodied energy, workability, and renewability, but its two major drawbacks are susceptibility to biological degradation and fire. Biodegradation is typically addressed through effective designs to exclude moisture or, where that is not possible, the use of either naturally durable or chemically protected timber. Naturally durable timbers are widely used globally while preservative treatments are increasingly used to protect less durable timbers. These practices have markedly extended the use and service life of timber in harsher environments. However, these treatments do not improve the fire performance of the timber and there is increasing interest in the use of fire resistive coatings or impregnation with fire retardants to allow use in bushfire prone areas. This review provides background on the problems associated with increased building and construction in the wildland-urban interface. It summarizes the codes, standards and state of the art practices needed for adequate fire safety in timber construction.

show abstract

Section: Potential Of Dual Fr-and Preservative-(frandp)-treatment Sys...mentioning

confidence: 99%

West Indian drywood termite, Cryptotermes brevis, in Australia: current understanding, ongoing issues, and future needs

Haigh

Hassan²,

Hayes

2022

Australian Forestry

View full text Add to dashboard Cite

show abstract

“…With this technique, high weight gains of up to 100% can be obtained depending on the wood’s anatomy, the solution’s viscosity, and the molecular weight of the compounds in solution [ 36 , 37 , 38 , 39 ]. Impregnation using phosphorus-based compounds such as ammonium polyphosphate [ 40 ], guanyl urea phosphate [ 41 ] or organo-phosphorus compounds [ 42 ] provides an improvement of wood FR properties. However, it can be difficult and costly to impregnate timbers that have low permeability using this approach due to the need for non-continuous processes and drying time [ 43 ].…”

Section: Introductionmentioning

confidence: 99%

Innovative Polyelectrolyte Treatment to Flame-Retard Wood

et al. 2021

View full text Add to dashboard Cite

Fire protection has been a major challenge in wood construction for many years, mainly due to the high flame spread risk associated with wood flooring. Wood fire-retardancy is framed by two main axes: coating and bulk impregnation. There is a growing need for economically and environmentally friendly alternatives. The study of polyelectrolyte complexes (PECs) for wood substrates is in its infancy, but PECs’ versatility and eco-friendly character are already recognized for fabric fire-retardancy fabrics. In this study, a new approach to PEC characterization is proposed. First, PECs, which consist of polyethyleneimine and sodium phytate, were chemically and thermally characterized to select the most promising systems. Then, yellow birch (Betula alleghaniensis Britt.) was surface-impregnated under reduced pressure with the two PECs identified as the best options. Overall, wood fire-retardancy was improved with a low weight gain of 2 wt.% without increasing water uptake.

show abstract

“…Especially, phosphorus-based compounds are watersoluble inorganic substances that are often used as a fire retardant [6]. From previous works, Chen [7] and Gaan and Sun [8] investigated using diammonium phosphate (DAP) as fire retardant for natural fibers. It was found that such product was safe, inexpensive, and more efficient to enhance the limiting oxygen index (LOI) of natural fiber than other phosphorus compounds such as tributyl phosphate, triallyl phosphate, or triallyl phosphoric triamide.…”

Section: Introductionmentioning

confidence: 99%

Thermal Degradation and Fire Retrandancy of Wood Impregnated with Nitrogen Phosphorus Flame Retardant

Phromsaen

Chindaprasirt

Hızıroǧlu

et al. 2014

AMR

View full text Add to dashboard Cite

In this research, the effect of diammoniumphosphate (DAP) as fire retardant additive during thermal degradation of wood samples from shorea obtuse (Dipterocarpaceae) has been investigated. Thermal properties of wood samples impregnated with DAP ranging from 0-40 %wt were characterized by thermogravimetric analysis (TGA) and limiting oxygen index (LOI). Leachability of DAP from impregnated samples kept under running water was also investigated. The results indicated that the rate of weight loss obtained from TGA reveal that impregnation of DAP reduced the degradation rate from 0.95%/°C to 0.56%/°C. Furthermore, LOI of woods specimens trended to be increase from 24.8 to 30.6 when they were treated with DAP having a range of 0-30 %wt. Based on the results of this study, wood samples impregnated with 30%wt of DAP can be classified as self-extinguishing materials and cloud meet the requirement for non-flammability in construction. The leachability test indicated that only trace amount of unreacted DAP leached from the samples.

show abstract

Synthesis and evaluation of phosphortriamidates in wood for thermal and fungal decay protection

Cited by 7 publications

References 7 publications

West Indian drywood termite, Cryptotermes brevis, in Australia: current understanding, ongoing issues, and future needs

West Indian drywood termite, Cryptotermes brevis, in Australia: current understanding, ongoing issues, and future needs

Innovative Polyelectrolyte Treatment to Flame-Retard Wood

Thermal Degradation and Fire Retrandancy of Wood Impregnated with Nitrogen Phosphorus Flame Retardant

Contact Info

Product

Resources

About