全同聚1-丁烯/多壁碳纳米管复合材料的结晶性能  

Crystalline behavior of iPB-1/MWCNTs composites

作　　者：杨艳秋[1] 王辉[1] 许巍[1] 李丹[1] 赵永仙[1] 

机构地区：[1]青岛科技大学,橡塑材料与工程教育部重点实验室/山东省橡塑材料与工程重点实验室,山东省青岛市266042

出　　处：《合成树脂及塑料》2016年第5期46-48,57,共4页China Synthetic Resin and Plastics

基　　金：国家自然科学基金(51373084,51243002);山东省自然科学基金(ZR2010EM025)

摘　　要：通过溶液絮凝法制备全同聚1-丁烯(iPB-1)/多壁碳纳米管(MWCNTs)复合材料。采用差示扫描热量仪和偏光显微镜对其进行表征,并研究了复合材料的结晶性能。结果表明:MWCNTs在复合材料中起到了异相成核作用,iPB-1可以在较高温度条件下形成晶核,从而使复合材料的结晶温度升高,结晶时间缩短,结晶速率增大。与iPB-1相比,加入MWCNTs使复合材料的熔融温度、熔融焓、结晶焓和相对结晶度降低。随着MWCNTs用量的增加,复合材料的结晶温度从71.7℃逐渐升高到72.4℃,并且晶粒数目增加、尺寸细化,球晶规整度下降。Isopolybutene-1/multi-walled carbon nanotubes（iPB-1/MWCNTs）composites are prepared by solution coagulation method. The crystalline behavior of nano-composites is characterized by differential scanning calorimeter（DSC）and polarizing microscope. The results show that MWCNTs can be used as heterogeneous nucleating agent to promote the formation of crystal nucleus of iPB-1 at high temperature, which increases the temperature and rate of crystallization, and reduces the crystallization time. The melting peak temperature, melting enthalpy, crystallization enthalpy, relative crystallinity of the composites drop after adding MWCNTs. The crystallization temperature of the composites rise from 71.7 ℃ to 72.4 ℃ gradually with the increasing of MWCNTs as well as grain number and refining, spherocrystal tacticity decreases at the same time.

关 键 词：全同聚1-丁烯 多壁碳纳米管 结晶性能 

分 类 号：TB332[一般工业技术—材料科学与工程]