酮肼交联对聚丙烯酸酯乳液及成膜性能的影响

摘要

Polyacrylate emulsion containing active keto groups was prepared by diacetone acrylamide as function monomer in periment. Then the coating used as air conditioning aluminum foil was obtained by blending polyac-rylate emulsion and adipic dihydrazide. Crosslinking degree on the effect of film on the emulsion stability, wa-terresisting properties, delimit resistance and corrosion resistance was diacussed. In addition, using FT-IR to characterize the polymer. The results shows that, with the increase of the dosage of diacetone acrylamide, gel rate increases and stability becomes poor, the waterresisting properties,delimit resistance and corrosion resist-ance increase,while thermal stability decreases.%以双丙酮丙烯酰胺(DAAM)作为官能单体,制备了含有酮羰基的聚丙烯酸酯乳液.将此乳液与己二酸二酰肼(ADH)混合,制备了空调铝箔用涂料.讨论了DAAM的量对乳液凝胶率、涂膜吸水率、耐腐蚀性、耐划性能、热分解性能的影响,并且通过FT-IR对聚合物结构进行表征.结果表明,随着DAAM的量的增加,聚丙烯酸酯乳液的凝胶率增大,乳液稳定性变差,涂膜的耐水性、耐划性、耐腐蚀性增强,而热稳定性减弱.