PP/回收PET共混物的稳态流变行为  

The Steady Rheological Behaviour of Polypropylene/Recycled Poly(Ethylene Terephthalate) Blends

作　　者：陶友季[1,2] 章自寿[1] 麦堪成[1] 

机构地区：[1]中山大学化学与化学工程学院材料科学研究所,教育部聚合物复合材料及功能材料重点实验室,广东广州510275 [2]中国电器科学研究院工业产品环境适应性国家重点实验室,广东广州510663

出　　处：《高分子材料科学与工程》2010年第10期56-59,共4页Polymer Materials Science & Engineering

基　　金：广东省科技计划项目(2008A010500003);广东省自然科学重点基金(06104925);广州市应用基础研究项目

摘　　要：采用双螺杆挤出机制备了聚丙烯(PP)/回收聚酯(PET),回收PET/相容剂和不同相容剂增容PP/回收PET共混物,研究了以上共混物的剪切黏度、剪切应力与剪切速率的关系。结果表明,PP剪切黏度随回收PET含量增加而降低,剪切速率越高,剪切黏度降低越明显,具有典型的剪切变稀特性。加入PP-g-MA能提高PP/回收PET共混物剪切黏度,但加入PP-g-GMA会降低PP/回收PET共混物剪切黏度。PP/回收PET共混物剪切应力随r-PET含量增加而降低。PP-g-MA使回收PET/PP共混物剪切应力增大,但PP-g-GMA使共混物剪切应力降低。Blends of PP/recycled PET（r-PET）,r-PET/compatibilizer and compatibilized PP/r-PET blends were prepared on a twin-screw extruder. The relationships between shear viscosity or shear stress and shear rate of above blends were investigated. Results show that addition of r-PET decreases the shear viscosity of PP. Addition of PP-g-MA increases the shear viscosity of PP/r-PET blends,but addition of PP-g-GMA decreases the shear viscosity of PP/r-PET blends. The shear stress of PP/r-PET blends decreases with increasing the content of r-PET. Addition of PP-g-MA increases the shear stress of r-PET/PP blend. However,addition of PP-g-GMA decreases the shear stress of r-PET/PP blend.

关 键 词：回收聚酯 聚丙烯 剪切黏度 剪切应力 

分 类 号：O631.21[理学—高分子化学]