HDPE/LDPE/SBS高耐应力开裂复合材料亚微相态-力学性能-流变性能的研究(Ⅱ)  

The study on HDPE/LDPE/SBS high-stress-crack-resistant composite sub micro phase-the mechanical properties-rheological behavior(Ⅱ)

作　　者：李金波[1] 魏昆[1] 毛立新[1] 金日光[1] 

机构地区：[1]北京化工大学材料科学与工程学院,北京100029

出　　处：《化工新型材料》2009年第12期55-57,60,共4页New Chemical Materials

基　　金：国家自然科学重点基金(50333060)

摘　　要：通过HDPE/LDPE/SBS三元复合,可制得高耐开裂聚烯烃高分子合金复合材料。至目前,对本课题所涉及的上述复合材料的加工流变性能的研究尚未见报导。通常研究这一类复合材料时,多半应用幂律型非牛顿指数方程,但是所得到的流变参数很难反映这种复材料流变过程的内在机理,因此本文着重使用JRG流变本构方程来研究HDPE/LDPE/SBS三元复合体系的流变机制,并与幂律方程的结果作了系统的对比,其结果表明,由JRG方程得到3个流变参数ΔE0、α、β更好地反映了这种复合材料的流变性能,为加工应用这种材料提供了理论依据。其中2#、10#样品流变性能最好,4#、6#样品同时具有较好的流变加工性和耐环境应力开裂性。High-crack-resistant alloy polyolefin polymer composites can be produced by the method of HDPE/ LDPE/SBS blending. Up to now, this issue involves the processing and rheological behavior of the research has not yet to report. Usually, these composites are researched by non-Newtonian power-law index equation in most of the applications, but it＇s very difficult to reflect internal material flow mechanism of this complex process by the flow parameters, so this article focused on the use of JRG rheological constitutive equation to study the flow mechanism of the HDPE/LDPE / SBS blending system, and made a systematic comparison with power-law equation. The results showed 3 rheological parameters △E0, α, β from the JRG constitutive equation. It better reflects the rheological behavior of composite materials, and pro vides a theoretical basis for this material in the processing applications. Of which 2^# , 10^# samples had the best rheological properties, and 4^# , 6^# samples had both good rheology and environmental stress cracking resistance.

关 键 词：高分子合金复合材料 幂律方程 JRG流变本构方程 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业] TB33[一般工业技术—材料科学与工程]