PP/PA6/OMMT纳米复合材料的非等温结晶动力学  

Non-Isothermal Crystallization Kinetics of PP/PA6/OMMT Nanocomposites

作　　者：蒙日亮[1,2] 伍玉娇[1,2] 何辉[1,2] 陈雨玲[1,2] 高明瑞[1,2] 

机构地区：[1]贵州大学材料与冶金学院,贵州贵阳550003 [2]国家复合改性聚合物材料工程技术研究中心,贵州贵阳550014

出　　处：《高分子材料科学与工程》2011年第3期92-95,100,共5页Polymer Materials Science & Engineering

基　　金：贵州省工业攻关项目(黔科合GY字(2006)3013);贵州省教育厅自然科学研究项目(黔教科(2009)0032)资助

摘　　要：采用熔融插层法制备了聚丙烯(PP)/尼龙6(PA6)/蒙脱土(OMMT)纳米复合物材料,并用差示扫描量热法(DSC)对体系的非等温结晶动力学进行了研究。结果表明,PA6和OMMT的加入,对PP有异相成核的作用,能提高PP的结晶速率和结晶度;运用莫志深方法处理纯PP和PP/PA6/OMMT复合材料的非等温结晶动力学,结果显示,F(T)在OMMT含量为1%时随结晶度的增加先减小后增大。在OMMT含量为2%,3%,5%,7%(质量分数,下同)和纯PP情况下,F(T)随结晶度的增加而增大。a在复合材料体系中随结晶度的增大而增大。The polypropylene /polyamid-6/montmorillonite（PP/PA6/OMMT） nanocomposites were prepared by the melt intercalation.The non-isothermal crystallization kinetics of the nanocomposites was investigated by means of differential scanning calorimetry（DSC）.The results show that the crystallization rate of PP is increased by introduction of PA6 and OMMT,which act as a kind of heterogeneous nucleation centers during the non-isothermal crystallization process of PP.In this paper, the theory of Mo was used to analyze the data of DSC.The results show the Mo method can describe this system well.The value of F（T） increases with the increasing of crystallinity for PP/PA6/OMMT when the OMMT content is 2%,3%,5% and 7%.Under the condition of OMMT content being 1%,the value of F（T） firstly lowers and then heighten with the increase of the crystallinity.However,the value of α enlarges with the increase of crystallinity for all PP/PA6/OMMT composites.

关 键 词：聚丙烯 尼龙6 蒙脱土 熔融插层 非等温结晶 

分 类 号：TB383[一般工业技术—材料科学与工程]