Structure and Properties of Hybrid Composites Based on Dressed Aluminosilicate Microspheres and Polypropylene Graft Copolymer with Methacrylic Acid

Abstract

The paper presents the results of a study of the influence of the dressing process of a hollow aluminosilicate microsphere on the structural features and regulaties of changes in the main physical and mechanical characteristics of composites based on polypropylene graft copolymer with methacrylic acid. Organosilicon compound АГМ-9 (γ-aminopropyltriethoxysilane) was used as a dressing size. The mechanism of the sol-gel reaction in the process of dressing the surface of microspheres is given. The introduction of dressed microspheres into the composition of the graft copolymer made it possible to obtain hybrid composites with improved physical and mechanical properties. The most probable mechanism for the formation of the structure of hybrid composites with the formation of a three-level cross-linked spatial structure - “interpenetrating networks” is considered. The use of the method of thermomechanical studies of dressed and undressed composites confirmed the assumption of the formation of interpenetrating networks.