Open AccessSurface modification of dispersed fillers (silicofluoride sodium and ammonium polyphosphate). Their properties and influence on an epoxy matrix
Author(s) -
Н. А. Яковлев,
Е. В. Плакунова,
А. С. Мостовой,
Andrey Shcherbakov
Publication year - 2020
Publication title -
vestnik voronežskogo gosudarstvennogo universiteta inženernyh tehnologij
Language(s) - English
Resource type - Journals
eISSN - 2310-1202
pISSN - 2226-910X
DOI - 10.20914/2310-1202-2020-1-207-212
Subject(s) - epoxy , ammonium polyphosphate , materials science , composite material , composite number , pulmonary surfactant , particle (ecology) , particle size , chemical engineering , scanning electron microscope , fire retardant , oceanography , engineering , geology
The structure and properties of ammonium polyphosphate and sodium silicofluoride used as dispersed fillers for epoxy compositions were studied. The morphology of the fillers was studied separately and in an epoxy composite matrix using scanning electron microscopy with an X-ray energy dispersive analysis detector. Due to the fact that sodium silicofluoride is a by-product in the production of phosphoric acid, its particle size was determined by sieve analysis and particle parameters were statistically calculated, while a comparative analysis of the studied filler with ammonium polyphosphate widely used in the production of composite materials, which at the same time, was performed time was not modified by the surfactant 3-aminopropyltriethoxysilane. The study of morphology and properties is a determining factor describing the size and type of particles, which entails the possibility of controlling technological parameters, such as the dynamic viscosity of the system, resistance to various loads, therefore, it is possible to obtain highly filled composites having high physical and mechanical characteristics. In this regard, the influence of the studied fillers on the properties of polymer composite materials is determined. The mechanisms of interaction of the modifying additive of 3-aminopropyltriethoxysilane with an epoxy oligomer and the effect of sizing on the properties of sodium silicofluoride and ammonium polyphosphate, processes, and the formation of a monolayer heterofunctional surfactant are studied.