Search results
Results from the WOW.Com Content Network
In addition to broad efficacy against decay fungi and wood-destroying insects, its low mammalian toxicity is a key reason why copper naphthenate has gained market acceptance as a proven effective wood preservative that is specified and used extensively for environmental reasons by utilities and railroads as a less toxic alternative to creosote ...
A process of thermal modification of pressurized wood with a medium moisture content was described in a paper by Burmester in 1973. [3] Today there are five different thermal modification processes. Finland produced Thermowood also known as Premium wood. France uses the Les Bois Perdure Retification process, the Netherlands uses the Plato ...
Wood impregnation resins typically are designed to end up inside wood cell walls, where they generally increase strength, hardness, dimensional stability, and resistance to decay. [2] In recent years, interest in wood, or lumber, has increased because less energy is needed to convert trees into wood than what is required by other building ...
Chromated copper arsenate (CCA) is a wood preservative containing compounds of chromium, copper, and arsenic, in various proportions. It is used to impregnate timber and other wood products, especially those intended for outdoor use, in order to protect them from attack by microbes and insects. Like other copper-based wood preservatives, it ...
Apart from structural wood preservation measures, there are a number of different chemical preservatives and processes (also known as timber treatment, lumber treatment or pressure treatment) that can extend the life of wood, timber, and their associated products, including engineered wood. These generally increase the durability and resistance ...
Acetylated wood is a type of modified wood that is produced through a chemical modification process. [1] It produced from a chemical reaction (named as acetylation ), involving acetic anhydride and a modification process to make wood highly resistant to biological attacks by fungi and wood-boring insects and durable to environmental conditions.
Pyrolysis liquids from slow pyrolysis of bark and hemp have been tested for their antifungal activity against wood decaying fungi, showing potential to substitute the current wood preservatives [99] while further tests are still required. However, their ecotoxicity is very variable and while some are less toxic than current wood preservatives ...
Similarly, the transparent wood's thermal conductivity is attributed to the alignment of the wood cellulose fibers, which has been preserved after lignin removal and polymer infiltration. Transparent wood has a thermal conductivity of 0.32 W⋅m −1 ⋅K −1 in the axial direction and 0.15 W⋅m −1 ⋅K −1 in the radial direction ...