摘要
以聚丙烯酸丁酯(PBA)为内核,通过种子乳液聚合制备了分别以聚甲基丙烯酸甲酯(PMMA)、聚氯乙烯(PVC)、PMMA/PVC为壳层的纯丙烯酸酯(ACR)和PVC改性ACR乳液。扫描电镜观察发现,纯ACR乳胶粒子具有明显的核-壳结构,进一步包覆PVC后形成疏松外层。考察了不同结构ACR与PVC共混物的相态结构、抗冲性能和断面形貌,发现用PVC部分或完全替代PMMA壳层的改性ACR在PVC基体分散良好,具有与纯ACR相当的增韧PVC作用,冲击断面呈现典型的韧性断裂特征。
With PBA as the internal core, PMMA, PVC, PMMA/PVC as shell, ACR and PVC modified ACR were synthesized through seeded emulsion polymerization. TEM photographs clearly showed that neat ACR latex particles exhibited two layers core-shell structure, and after coated by PVC exhibited loose out layer. The phase structure, impact property, and fracture surface of different ACR and PVC blends were studied. It was found that when part or all of the PMMA in the shell were replaced by PVC, the ACR still dispersed well, the modified ACR still showed THE toughening efficiency. The broken surface of ACR modified PVC species exhibited a typical ductile fracture morphology.
出处
《塑料工业》
CAS
CSCD
北大核心
2011年第2期90-93,共4页
China Plastics Industry
基金
国家科技支撑计划项目课题资助(编号:2007BAE10B01)
