| 摘要 |
<p>A method of rendering wooden material flame-retardant so as to achieve flame-retardant levels as stipulated by the authorities concerned economically in a simple and easy way, which comprises mixing a flame retardant in a concentration of about 30-50 % with an aqueous solution of ethers and alcohols, directly spraying wooden material with the resultant mixture under ordinary conditions while controlling the liquid temperature to be kept above 60 °C, thus effecting impregnation in such a manner that the impregnated wooden material will achieve a weight gain of about 20-30 % in the subsequent drying step.</p> |
