pCBT/ABS共混合金的制备与表征  

PREPARATION AND CHARACTERIZATION OF pCBT/ABS IN-SITU BLENDS

作　　者：黄颖[1] 林志勇[1] 钱浩[1] 杨光耀[1] 林军超[1] 

机构地区：[1]国立华侨大学材料科学与工程学院,厦门361021

出　　处：《工程塑料应用》2011年第5期25-28,共4页Engineering Plastics Application

基　　金：国家自然科学基金项目(50673030);福建省自然科学基金项目(E0710014);福建省发改委发明创造基金项目

摘　　要：采用原位聚合法制备了原位聚合聚对苯二甲酸丁二酯(pCBT)/丙烯腈-丁二烯-苯乙烯塑料(ABS)共混合金,并对共混合金进行了差示扫描量热、动态热机械、扫描电子显微镜、广角X射线衍射和力学性能研究。结果表明,加入ABS可有效降低pCBT的结晶度,共混合金在保持较好刚性的同时,韧性有所提高。当ABS用量为1份时,共混合金的断裂伸长率提高了61%,缺口冲击强度提高了39%。ABS与pCBT呈部分相容性,共混合金只存在α晶型,拉伸断面表现出明显的韧性断裂的形貌特征。Blends of pCBT/ABS was synthesized via in-situ polymerization. It was characterized by differential scanning calorimetry（DSC）, dynamic mechanical analysis （DMA）, scanning electron microscopy （SEM）, wide-angle X-ray diffraction （WAXD） and its mechanical properties were studied. The results showed that the addition of ABS led to a decrease in the degree of crystallization of pCBT and improved the ductility while the rigidity decreased a little. When the ABS content was 1 phr, the enlongation at break and the notched Izod impact strength of the blends increased by 64% and 39%, respectively. DMA results showed that ABS and pCBT showed part compatibility. WAXD results showed that only α-forrn crystal existed in the pCBT/ABS blends. The classic tough fracture was observed on tensile fracture of pCBT/ABS blends by SEM.

关 键 词：聚对苯二甲酸丁二酯 丙烯腈-丁二烯-苯乙烯塑料 环形对苯二甲酸丁二酯 原位聚合 

分 类 号：TQ325.2[化学工程—合成树脂塑料工业]