油墨用不黄变聚氨酯胶粘剂的研制  

Research on non-yellowing polyurethane adhesives for ink

作　　者：徐文超[1] 张晓刚[2] 唐亚夫[3] 宋文生[1] 朱长春[3] 

机构地区：[1]河南科技大学化工与制药学院,河南洛阳471003 [2]河南理工大学,河南焦作454003 [3]洛阳吉明化工有限公司,河南洛阳471012

出　　处：《粘接》2008年第8期24-27,共4页Adhesion

基　　金：河南省高等学校青年骨干教师资助计划项目(豫教高[2005]461号)

摘　　要：介绍了油墨用不黄变PU胶原料的选择，探索出了最佳合成工艺；采用不结晶性相对分子质量为1500的聚酯二元醇，以带侧基的甲基丙二醇为扩链剂与HDI通过一步法反应，R值取0．99～1．00；反应温度90～105℃，反应时间为6～10min；后熟化温度为120～140℃，时间为6—10h。合成出不黄变Pu胶具有优良的透明性、溶解性、稳定性，对PET等材质有优良的粘接性能及抗回粘性。The choice of raw materials of non-yellowing polyurethane adhesives for ink was introduced and the optimum synthesis process was discoveried. Using non-crystallizable polyester polyol with molecular weight of 1500, methyl propanediol as the chain extender and hexamethylene diisocyanate（ HDI）, the polyurethane adhesive was prepared by one-step method. During the preparing process, the R value is 0.99 - 1.00, the reaction temperature is 90 - 105 ℃, the time is 6 - 10 minutes and the temperature and the time of post curing are 120 - 140 ℃ and 6 - 10 hours, respectively. The synthesized non-yellowing polyurethane adhesive for ink has fine transparency, solubility, stability, adhensiveness to PET and other materials and good blocking resistance.

关 键 词：PU胶 不黄变PU 胶粘剂 

分 类 号：TQ433.432[化学工程]