STUDY OF POLYPROPENE COMPOSITES FILLED WITH RICE HUSKS ASH

摘要

Composite materials based on polypropene filled with 1 to 20 mass.% raw or thermally treated rice husks in nitrogen or air atmosphere were obtained and characterised,as well as the commercial product Aerosil A200.In the present work,a comparison was made of the structural,technological and dielectric properties of the filled composites.It was found that the filler nature and the degree of filling did not affect the size of the crystallite in polypropene except for the samples filled with 20 mass% white rice husks ash or Aerosil A200.The degree of crystallinity tended to decrease with the increase of ingredient content due to its amorphising effect.The increase of the filler content was proved to reduce flowability and the strongest effect was observed for the composites filled with Aerosil.Technological properties closest to these of the initial polypropene had the composites filled with raw rice husks.The filler type and its concentration did not affect the dielectric properties of the composites obtained significantly.