Effect of CaCO_3/PMMA nanocomposite on mechanical properties of Poly(vinyl chloride) and PVC/ACR blend

摘要

Polyvinyl chloride (PVC), as a commodity plastic, has been widely used in industrial fields for many years, due to its good properties, such as nonflammability, low-cost and formulating versatility. However, its low toughness and heat-softening temperature limit its application. In recent years, a variety of PVC blends with other polymers and PVC composites with other inorganic nanoscale fillers were developed to broaden PVC application. However, blending with rubbers often result in the decline of properties of polymeric materials such as the tensile strength, modulus, and resistance to heat and processing. Compounded with nanoscale fillers only can obtain less improvement of toughness. Developing nanocomposites based upon polymer blends and nanoscale fillers is a good method to achieving good properties. The effect of nano-CaCO_3 on the impact resistance of PVC/CPE blend has been researched, but few publications concerning the effect of nano- on the mechanical properties of PVC/ACR blend have been reported. In this paper, the mechanical properties of PVC/ACR/nano-CaCO_3 composites were studied.