HDPE/NBR共混物的相态及动态力学性能研究  

Study on Morphological Structure and Dynamic Mechanical Properties of HDPE/NBR Composites

作　　者：游瑞云[1] 陈婷[1] 陈芳杰[2] 钟嘉兴[2] 陈良哲[2] 陈智[3] 陈庆华[3] 

机构地区：[1]福建师范大学材料科学与工程学院,福建福州350117 [2]福建师范大学化学与化工学院,福建福州350117 [3]福建师范大学环境科学与工程学院,福建福州350117

出　　处：《福建师范大学学报（自然科学版）》2013年第5期61-65,共5页Journal of Fujian Normal University：Natural Science Edition

基　　金：国家级大学生创新创业训练计划(201210394003);企事业单位委托科技项目(DH-842)

摘　　要：通过熔融共混法制备了高密度聚乙烯(HDPE)/丁腈橡胶(NBR)共混物,采用动态机械分析仪研究其动态力学性能.结果表明:纯HDPE晶粒规整,相界线清晰,主要表现为脆性断裂;加入适量NBR后,HDPE的α转变温度移向低温,相界面模糊,转变为韧性断裂;综合考虑材料的尺寸稳定性,质量分数10%为NBR较佳的添加量.HDPE/NBR composites were prepared by melt blending. The dynamic mechanical properties of the composites were investigated via dynamic mechanical analysis （DMA）. The re- suits showed that the pure HDPE had regular crystal particles; and clear phase interfaces, and it mainly displayed as brittle fracture. The temperature of α transition of HDPE shifted to a low area with adding an appropriate content of NBR. The HDPE/NBR composites had blur phase interface and they displayed as ductile fracture. Considering the dimensional stability of the materials, the preferred content of NBR was 10% .

关 键 词：高密度聚乙烯 丁腈橡胶 共混物 动态力学性能 

分 类 号：TQ325.1[化学工程—合成树脂塑料工业]