低毒脲醛树脂粘合剂的研究  

Study on urea formaldehyde resin adhesive with low toxicity

作　　者：王林鹏 韩文理 

机构地区：[1]郑州油漆厂,河南郑州450052 [2]商丘市蓝星精细化工厂,河南商丘476100

出　　处：《河南科学》2000年第4期384-386,共3页Henan Science

摘　　要：介绍了含游离甲醛低的粘结强度大的建筑行业用脲醛树脂粘合剂的制备方法。研究了树脂合成过程中原材料纯度 ,尿素和甲醛的摩尔比 ,反应温度以及反应时间对粘合剂粘度和固含量等性能的影响。在一定酸度和温度条件下 ,分批加入尿素进行阶段控温反应 ,得到一种胶液性能稳定 。A preparation method of urea formaldehyde resin adhesive with low free formaldehyde content and high adhesive strength was presented. Effects of purity of raw materials, molar ratio of urea and formaldehyde, reaction temperatures and reaction time on the properties of urea formaldehyde resin adhesive were studied. After addition of formaldehyde, urea was added in three portions respectively at proper pH value and temperature to react, then adhesive with stable adhesive performance and good product quality for construction was obtained.

关 键 词：脲醛树脂 粘合剂 低毒 建筑板材 粘度 制行方法 

分 类 号：TQ433.431[化学工程] TQ581.21