Abstract
We have developed new compositions based on tetravalent boron-nitrogen compounds (amine borates), which are able to increase the bio-resistance and flame-retardancy of wood at the surface modification. Previously, it was shown that the obtained amine borate formed hydrolytic stable compositions with lignin and carbohydrates, which are the basis wood. So we can expect a long-term protective effect caused by the developed compositions.The full-scale tests conducted on bars in stand mycological site of MNIIS Dame Bay (Tropical Research Centre, Far East branch office, Nha Trang, Vietnam). Test samples were subjected to a pine wood size 50x50x10mm, impregnated under standard conditions of boron-nitrogen compounds, as well as control samples of pine wood of the same size. The tests lasted 36 months, inspections were carried out every three months. According to the significant prepared by Tropical Research Centre laboratory changes in the state of modified pine wood samples for three testing years did not happen. Samples impregnated boron-nitrogen compounds, did not change its colour. Fouling fungi were observed. Control samples of the same unmodified wood completely overgrown by fungi.
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