INFLUENCE OF SILICONE ADDITIVES ON STRUCTURE AND MECHANICAL PROPERTIES OF POLYURETHANE FOAM

Abstract

The work presents a study of the effect of cilicone supplement on the structure and mechanical properties of
polyurethane foam (PPU). PPUs were obtained by the pouring in plastic forms due to the synthesis of polyole (with the content
of the foam) and the polyisocyanate components in the weight ratio of 2:4. The modifying silicone additive was introduced at
the stage of mixing components in different weight ratios from 1 to 4 weight particles. The microstructure of the obtained foam
with different weight content of silicone additives is analyzed, their porosity and structural and morphological features were
evaluated and the behavior of modified PPU samples during deforming with static compression is considered. The pattern of
change of porosity and mechanical characteristics is described due to the variation of the weight ratio of components. An
increase in the particle of silicone additive leads to an increase in strength and mechanical characteristics at the same time as
a decrease in PPU plasticity and an increase in the proportion of open pores in the material. The approaches described in the
work can be used in the manufacture of foam structures that have predetermined characteristics.