PVC-clay nanocomposites preparation, thermal and mechanical properties

摘要

Polymer clay nanocomposite have attracted intensive interests from academic and industrial researchers in the past decade. They found that the nanoscale dispersion of minerals, e.g. clay, could greatly improve the thermal and mechanical properties of the polymer matrix. For example, compared to virgin Nylon, the tensile strength of a Nylon-6 clay nanocomposite with 5% clay loading level was 49%, higher, the tensile modulus was 68% higher and the heat distortion temperature (HDT) was 87 ℃ higher, while the impact strength was almost constant. Polyvinyl chloride (PVC) is one of the most important thermoplastics owing to its wide applications and low cost. Although many of polymer clay nanocomposites have been reported, less attention has been given to PVC clay nanocomposite. In this work, we report the preparation of PVC clay nanocomposites by melt compounding, and its thermal properties and mechanical properties are investigated.