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粉状脲醛树脂是由甲醛和尿素缩聚成低分子量的缩合初产物经喷雾干燥后得到的白色粉末。多年来,由于其使用方便,存放期长而在各工业部门广泛应用。80年代初,西德研究人员经过长期的科学试验,论证了脲醛树脂在水产养殖中的作用。我们从1986年起开始研制水产饲料粘合剂,在东海水产研究所、南海水产研究所的配合下,进行了各种试验,成功地合成出适合水产养殖的粉状脲醛树脂,本文简述其原理和试验情况。一、粘结机理
Powdered urea-formaldehyde resin is a white powder obtained by the condensation of formaldehyde and urea into a low molecular weight condensation precursor after spray-drying. Over the years, due to its ease of use, long shelf life and widely used in various industrial sectors. In the early 1980s, West German researchers through long-term scientific experiments demonstrate the role of urea-formaldehyde resin in aquaculture. We started to develop aquafeed binder since 1986, cooperated with the East China Sea Fisheries Research Institute and the South China Sea Fisheries Research Institute and carried out various experiments to successfully synthesize powdered urea-formaldehyde resin suitable for aquaculture. Principle and test situation. First, the bonding mechanism