Effect of the content of unmodified nanosilica with varied specific surface area on physicomechanical properties and swelling of epoxy composites

About Possibilities of Strengthening of Epoxypolymer Composites by Modificated Brick Powder

“…In some cases, filling with 10 wt% BP significantly increases the instability of instrument reading ("pointer ju mping") when tested in comp ression, which is characteristic of the co mposite with high ly-defective structure. Note that in research of co mposites "EP-nanosilica" the "loosening filler concentrations" also were found, when the strength parameters were decreased to a minimu m (3 and 7 wt% of silica A-100) due to embrittlement of the poly mer [6,9]. However, this is not evidence of the fall of all strength parameters.…”

“…Note that the question of hardening epoxy by filling alu mina and silica fillers are still relevant, as evidenced the list of works [1][2][3][4][5][6][7]. For examp le, typical filler in studies of new EP-co mposites stands mont morillonite [3,8], alu mina [10], waste-glass [9].…”

Determining the strength and thermal­, chemical resistance of the epoxy polymer­composite filled with basalt micronano fiber in the amount of 15–80 % by weight

“…3. Note that acetone and its solutions are very aggressive environments for polyepoxides, as is it known [25] from studies [26,27]. Since acetone is found in many industrial and household solvents, the issue of increasing the durability of composites in it is very important.…”

Resistance of Epoxypolymer with 2 - 5 wt% Nanosilica in Aggressive Acid Medium

“…Introduction of nano-and micro-additives is commonly used for improvement of industrial compositions properties [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. One promising areas of the research is the study of nano-additive's impact on resistance to aggressive environment and atmosphere.…”

“…For today, there is a lack of data about the influence of specific surface area (S) of nanosilica on the chemical properties of the composites. Different works [8][9][10]15] have shown that the specific surface area is an essential factor with a significant influence on the properties of epoxy composites. However, the study of stability in aggressive environment has showed that the dependence of the chemical resistance from S is hard to establish.…”