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首页> 外文期刊>Journal of Applied Polymer Science >Rheological and Physical Properties of In Situ Composite Based on Liquid Crystalline Polymer and Poly(ethylene 2,6-naphthalate) Blends
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Rheological and Physical Properties of In Situ Composite Based on Liquid Crystalline Polymer and Poly(ethylene 2,6-naphthalate) Blends

机译：液晶聚合物与聚2,6-萘二甲酸乙二醇酯共混物的原位复合材料的流变和物理性能

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摘要

The in situ composies based on poly(ethylene 2,6-naphthalate) (PEN) and liquid crystalline polymer (LCP) were investigated in terms of thermal,rheological,and mechanical properties,and morphology.Inclusion of LCP enhanced the crystallization rate and tensile modulus of the PEN matrix,although it decreased the tensile strength in the PNE-rich phase.The orientation effect of this blend system was composition and spin draw ratio ratio dependent,which was examined by Instron tensile test.Further,the addition of dibutyltindilaurate (DBTDL) as a reaction catalyst was found to increase the viscosity of the blends,enhance its adhesion between the dispersed LCP phases and matrix,and led to an increase of mechanical properties of two immiscible blends.Hence DBTDL is helpful in producing a reactive compatibilizer by reactive extrucsion at the interface of this LCP reinforced polyester blend system.The optimum catalyst amount turned out to be about 500 ppm,when the reaction proceeded in the 75/25 PEN/LCP blend system.
机译：从热学，流变学，力学性能和形貌等方面研究了基于聚2,6-萘二甲酸乙二醇酯（PEN）和液晶聚合物（LCP）的原位复合材料。LCP的加入提高了结晶速率和拉伸强度PEN基体的模量虽然降低了富PNE相的拉伸强度。但该共混体系的取向效果取决于组成和旋转拉伸比与比例的关系，并通过Instron拉伸试验进行了检验。此外，添加了二月桂酸二丁基锡（发现DBTDL作为反应催化剂可增加共混物的粘度，增强其在分散的LCP相与基质之间的附着力，并导致两种不混溶共混物的机械性能的提高。因此DBTDL有助于通过以下方法生产反应性增容剂在该LCP增强聚酯共混体系的界面进行反应性挤出。当反应以75/25进行时，最佳催化剂量约为500 ppm PEN / LCP混合系统。

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