摘要
以铬鞣革屑中提取的蛋白质对脲醛树脂进行改性,目的主要是为了提高,脲醛树脂的胶接强度、降低其生产成本及其游离甲醛含量。试验表明:当蛋白质提取液与脲醛树脂1∶1混合时,可以使其胶接强度达到最大值6.95MPa,而当蛋白质提取液的加入量为脲醛树脂的1.5倍时,游离甲醛含量为0.053%,远低于国家标准的要求(0.3%)和纯脲醛树脂中游离甲醛的含量(0.385%),而此时胶接强度也达到了国家标准的要求(1.9MPa)。
In order to improve the adhesive strength and reduce the cost and formaldehyde content, the urea - formaldehyde resin was modified by protein extracted from leather shavings. The results show that when the protein liquor mixes with urea - formaldehyde resin in the proportion of 1 ： 1, the adhesive strength can reach the maximum value （6.95 MPa）. And when the quantity of protein liquor is 1.5 times of urea - formaldehyde resin, the content of formaldehyde is 0.053%, which is much lower than the national standard value （0.3%） and the pure urea - formaldehyde resin （0.385%）, while the adhesive strength in this proportion reaches the national standard （1.9MPa）.
出处
《中国皮革》
CAS
北大核心
2011年第23期15-17,共3页
China Leather
关键词
脲醛树脂
蛋白质
游离甲醛
改性
革屑
urea - formaldehyde resin
protein
free formaldehyde
modify
leather shavings
