聚己二酸/对苯二甲酸丁二酯/类石墨相氮化碳复合体系流变性能研究  

Study on Rheological Properties of Polyadipic Acid/Butylene Terephthalate/Graphite-Like Carbon Nitride Composite System

作　　者：何伟 石宁 林伟 宋立新 马驰 王义燃 HE Wei;SHI Ning;LIN Wei;SONG Li-xin;MA Chi;WANG Yi-ran(Shenyang Key Laboratory of High Performance Plastics Engineering,Shenyang University of Chemical Technology,Shenyang 110142,China)

机构地区：[1]沈阳化工大学,沈阳市高性能化塑料工程重点实验室,辽宁沈阳110142

出　　处：《塑料科技》2020年第5期66-70,共5页Plastics Science and Technology

基　　金：国家自然基金项目(51703134);辽宁省重点研发计划(2019JH2/10100003)。

摘　　要：利用高级旋转流变仪测试聚己二酸/对苯二甲酸丁二酯(PBAT)与类石墨相氮化碳(g-C3N4)共混样品流变性能。结果表明:PBAT/g-C3N4复合体系熔体属于典型的切力变稀非牛顿流体;随着温度升高,表观黏度变小,因此通过升温的方法,可改善其加工性能;PBAT熔体温度为210℃时,其非牛顿指数n达到0.98,该熔体流动特性接近牛顿流体。PBAT/g-C3N4复合体系的非牛顿指数n随着g-C3N4含量增加而降低,g-C3N4质量分数为20%时,n值为0.52,表明复合体系熔体接近非牛顿流体;复合体系中g-C3N4含量增加使得体系易出现网络结构。The rheological properties of the polyadipic acid/butylene terephthalate(PBAT)/graphite-like carbon nitride(g-C3N4)melt were investigated using rotational rheometer.The results show that the melt of PBAT/g-C3N4 composite is a typical non-Newtonian fluid.As temperature increases,the apparent viscosity decreases.Therefore,the processing performance can be improved by heating.At 210℃,PBAT melt shows a non-Newtonian index n of 0.98,indicating the melt is close to Newtonian fluid.The non-Newtonian index n of the PBAT/g-C3N4 composite system decreases with the increase of g-C3N4 content,the n value is 0.52 when the content of g-C3N4 is 20%,indicating the melt of the composite is close to non-Newtonian fluid.Increase of g-C3N4 content causes the system tending to generate network structure.

关 键 词：聚己二酸/对苯二甲酸丁二酯 类石墨相氮化碳 流变性 复合体系 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业] TB332[一般工业技术—材料科学与工程]