水性PSiUA IPN阻尼胶的研究-三羟甲基丙烷三丙烯酸酯用量的影响

Study on waterborne PSiUA IPN damping adhesive and the influences of TMPTA amount

采用种子乳液聚合方法,以三羟甲基丙烷三丙烯酸酯(TMPTA)为交联剂,制备了多组分水性聚有机硅氧烷-聚氨酯-聚丙烯酸酯(PSiUA)阻尼胶,着重探究了TMPTA添加量对PSiUA阻尼胶的影响。研究结果表明:TMPTA的添加比例对乳液粒径影响不大;提高TMPTA的加入量有助于提高胶膜的耐水性;随着TMPTA用量的增加,tanδ转变峰位置向高温方向移动,同时tanδ值有所减小。

The waterborne polysiloxane-polyurethane-polyacrylate（PSiUA）damping adhesive was prepared by seeded emulsion polymerization,with trimethylolpropane triacrylate（TMPTA）as crosslinker.The effects of different addition of TMPTA on the properties of PSiUA were emphatically discussed.The research results showed that the ratio of TMPTA had poor influence on the particle size of the emulsion,and increasing the addition of TMPTA can help improve the water resistance of the glue film.With the increase of TMPTA dosage,the position of tan δ peak moved to high temperature direction,while the value of tan δ decreased.