顺丁烯二酸二丁基锡-苯乙烯-丙烯酸丁酯三元共聚物的结构与性能表征

Structure and Property Characterization of Dibutyltin Maleate-Styrene-Butyl Acrylate Copolymer

采用本体聚合的方法 ,在氧化苯甲酰 (BPO)存在下 ,合成了顺丁烯二酸二丁基锡 -苯乙烯 -丙烯酸丁酯(DBTM-St-BA)三元共聚物 .用 GPC,FTIR,1 H NMR,TG和刚果红法及布拉本热流变仪对共聚产物的结构和性能进行了表征 .结果表明 ,在所选定的聚合条件下 ,共聚产物为 DBTM-St-BA的三元共聚物 ,在含锡量相同的情况下 ,共聚物对 PVC的热稳定效果和加工性能的影响优于 DBTM,可以作为多功能化的

Benzoic peroxide(BPO) was used as an initiator in bulk terpolymerization of dibutyltin maleate, styrene and butyl acrylate(DBTM\|St\|BA). The structure and properties of the copolymer were characterized by GPC, IR, \{\}\+1H NMR, TG analysis, Congo red test and dynamic thermoreheological test. The results showed the occurrence of copolymerization. The number\|average molecular weight of terpolymer was above 10\+4. The thermal stability and flowability in PVC process of copolymer was superior to that of \{DBTM\}. It may be used as polyfunctional PVC stabilizer.