单组分湿固化聚氨酯密封胶的力学性能的研究  

Study on the Mechanical Performance of One-component Moisture-curing Polyurethane Sealant

作　　者：白金[1] 丛茂生[1] 张洪林[1] 张连红[1] 

机构地区：[1]辽宁石油化工大学环境与生物工程学院,辽宁抚顺113001

出　　处：《化学与粘合》2007年第6期384-386,共3页Chemistry and Adhesion

基　　金：国家863计划基金项目(编号2005AA001510)

摘　　要：介绍了新型聚氨酯湿固化单组分密封胶的合成。讨论了聚醚混合物相对分子质量、填料、游离异氰酸酯含量以及为保证储存添加的脱水剂TI对密封胶的力学性能的影响,从而确定了各物料的最佳添加量。实验结果表明,当聚醚二醇与三醇的比例为10/1,填料含量为30%左右,游离异氰酸酯含量为3.5%,脱水剂的添加比例为0.6%时,所制得的密封胶的力学性能最佳。The synthesis of one component, moisture - curing PU sealant was studied. The effects of the molecular weight of polyether polyols, f＇dler, the proportion of free NCO and the dehydrating agent on the mechanical performance of the sealant were discussed. The results showed that, when the ratio of polyether diol to polyether triol was 10/1, the content of filler was 30%, the content of free NCO was 3.5% and the proportion of dehydrating agent was 0.6%, the mechanical performance of sealant was excellent.

关 键 词：聚氨酯密封胶 湿固化 力学性能 

分 类 号：TQ436.6[化学工程]