(武漢工業(yè)大學(xué)材料科學(xué)與工程學(xué)院， 武漢 430070
蘇州大學(xué)化學(xué)化工學(xué)院，蘇州 215006)
摘 要: 用球形顆粒填充聚丙烯(PP)的流變模型及兩組分同心層狀結(jié)構(gòu)的流變模型的串聯(lián)，推導(dǎo)出了液態(tài)低熔點金屬/聚丙烯(LMPM/PP)復(fù)合體系的粘 度與組成的關(guān)系式。通過測定LMPM/PP復(fù)合體系的流變曲線可知，加入少量LMPM，PP熔體粘度顯著下降，表明液態(tài) LMPM對聚丙烯有明顯的促流作用。隨著LMPM用量的增加，LMPM/PP復(fù)合體系由假塑性流體變?yōu)榕ｎD流體。隨著偶聯(lián)劑用量增加，體系的粘度先上升后下降。
關(guān)鍵字: 低熔點金屬 聚丙烯 促流 流變模型
（Institute of Materials Science and Engineering, Wuhan University of Technology,Wuhan 430070, P. R. China
School of Chemistry and Chemical Engineering, Suzhou University,Suzhou 216006, P. R. China）
Abstract:The rheological formula of the composites of low melting point metal and polypropylene (LMPM/PP) was deduced by the combination of the rheological model of PP filled with spherical particle and the model of concentric laminated flow of two components. From the rheological curve of LMP M/PP composites, it is known that the viscosity of PP descends notably with small amount of LMPM addition. And it shows that LMPM has a remarkably promoting flow action on PP. The rheological behavior of composites will change from the pseudoplastic fluid to Newtonian fluid with increase of the LMPM's content. And the composites'viscosity raises first and then descends as the content of coupling agent increases.
Key words: low melting point metal polypropylene promoting flow action
