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Sunday, 22 September 2019
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Raw materials & technologies, Raw materials, Coatings additives

Alternative ways to manage consumed preservative-contaminated wood

Tuesday, 22 July 2014

Preparation of polyurethane wood coatings based on copper-, chromium-, and boron (CCB) containing liquefied wood was performed by Slovenian researchers.

Scientists prepared polyurethane wood coatings based on CCB containing liquefied wood

Source: Kowalewski - Fotolia.com

Scientists prepared polyurethane wood coatings based on CCB containing liquefied wood

Source: Kowalewski - Fotolia.com

Additionally, they examined the possibility of improvement of selected properties of the liquefied wood-based coatings by an addition of silica nanoparticles.

CCB does not affect curing

The constituents of the CCB wood preservative do not exhibit an influence on a liquefaction process and on composition of the liquefied mixture. CCB also does not affect curing of the formulations containing liquefied wood and an isocyanate-type hardener. Furthermore, influence of CCB on adhesion strength of liquefied wood-based coatings on a wooden substrate, their hardness, and resistance to scratching and to water, acetone, and alcohol, is not exhibited. However, apart from these, from the applicative point of view, positive results, any improvement of the coating properties by the addition of silica nanoparticles is not shown.

The study is published in: Journal of Applied Polymer Science, Volume 131, Issue 19, 5 October 2014.

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