NANOCOMPOSITE CONTAINING PLATELET AND FIBROUS NANO-FILLER

摘要

A polyolefin nanocomposite composition having from one to twenty weight percent of a platy cation exchanging layered silicate material (such as magadiite), from one to twenty weight percent of a fibrous cation exchanging layered silicate material (such as sepiolite) and from ninety eight to sixty weight percent of a polyolefin polymer matrix (such as polypropylene), the platy cation exchanging layered silicate material and the fibrous cation exchanging layered silicate material being dispersed in the polyolefin polymer matrix. .The use ofboth the platy and the fibrous cation exchanging layered silicate material results in a synergistic improvement of the physical properties of the composition. The composition can be made by melt blending the polymer with the platy and fibrous material. Alternatively, the composition can be made by polymerizing the polymber with a metallocene polymerization catalyst treated dispersion of an acid treated platy and fibrous material in a solvent so that the olefin polymerizes to form the composition.