为解决脲醛胶生产中甲醛原料供应不足,试验设想利用本区栲胶废渣、玉米芯等农林副产品所制取的糠醛,以代替甲醛作胶合板的胶粘剂,适应生产需要。其试验结果如下: 中试表明,糠醛、尿素、甲醛胶(简称糠醛胶) 所压制的胶合板,其强度完全能达到国家标准二类胶合板水平。在一定条件下(如材质紧密,较薄芯板,150℃热压等),尚能达 In order to solve the problem of insufficient supply of formaldehyde raw material in the production of urea formaldehyde glue, the tentative plan envisages the use of furfural obtained from agricultural and forestry by-products such as waste residue and corn cob in this area to replace formaldehyde as the adhesive of plywood to meet production needs. The test results are as follows: Pilot tests showed that the plywood pressed by furfural, urea and formaldehyde glue (referred to as furfural glue) can fully meet the national standard of the second type of plywood. Under certain conditions (such as material close, thin core, 150 ℃ hot pressing, etc.), still able to reach