UFPR含量对PP／UFPR复合材料动态和瞬态流变行为的影响  

Influence of UFPR Content on Dynamic and Transient Rheological Behavior of PP/UFPR Composites

作　　者：曹艳霞[1] 王万杰[1] 樊卫华[1] 陈金周[1] 王经武[1] 郑强[2] 

机构地区：[1]郑州大学材料科学与工程学院,河南郑州450001 [2]浙江大学材料科学与工程学系,浙江杭州310027

出　　处：《高分子材料科学与工程》2009年第6期96-98,共3页Polymer Materials Science & Engineering

摘　　要：研究了超细全硫化粉末橡胶(UFPR)的含量在0%～70%(质量分数,下同)变化时,PP/UFPR复合材料的动态及瞬态流变行为的变化规律。结果表明,当UFPR含量低于15%时,复合材料的流变性质与PP基体类似,但材料非均相性随UFPR含量逐渐增加而增加;当UFPR的含量超过25%时,复合材料的储能模量(G′)出现"第二平台",表明材料内部类网络结构形成;当UFPR含量增至50%和70%时,复合材料的G′失去频率(ω)依赖性,呈现出典型的橡胶特征。The influence of UFPR content on dynamic and transient rheological behavior at molten state for PP/ UFPR composites was investigated by using an advanced rheometric expansion system （ARES）. It is found that dynamic rheological functions such as dynamic storage modulus （G＇） at low frequency region and transient modulus （G （t）） at long time region can reflect the change of UFPR content of PP/UFPR composites. The distinct ＂second plateau＂ was observed when the content of UFPR approached 25 %, indicating the formation of web-like structure in composites due to particles agglomerating. Meanwhile, y dependence of G＇related to Payne effect was observed upon increasing γ amplitude.

关 键 词：聚丙烯/超细全硫化粉末橡胶 聚合物复合材料 动态流变 瞬态流变 

分 类 号：O631.21[理学—高分子化学]