A promising area of application of oligocyanurate binders is high-strength, lightweight spheroplasts based on hollow glass microspheres.

Important characteristics of these materials are:

During preliminary tests, based on glass microspheres and experimental oligocyanurate binder, we have obtained samples of spheroplastics with a density of 0.70 g/cm3 and a ultimate compression strength more than 100 MPa, which exceeds the strength of all Russian spheroplastics known to us.

The table shows the characteristics of an experimental sample of the OCSF-1 oligocyanurate spheroplast in comparison with the material IsofloatDR-11 (RonAllumDeepseaServices, Australia), which was used to create a buoyancy block in a deep-sea manned submersible descending to the bottom of the Mariana Trench.

Characteristics of the experimental sample of oligocyanurate spheroplastics OCSF-1 in comparison with material IsofloatDR-11
Material ρ, g/cm3 σcom. ., MPa CLTE, ppm/K
IsofloatDR-11 0,68-0,70 > 100 50
OCSF -1 0,70 102-110 33-34

ρ – density; σcom. – ultimate compression strength; CLTE – coefficient of linear thermal expansion

MaterialIsofloatDR-11

ρ, g/cm30,68-0,70

σcom.., MPa> 100

CLTE, ppm/K50

MaterialOCSF -1

ρ, g/cm30,70

σ com.., MPa102-110

CLTE, ppm/K33-34

ρ – density;
σcom. – ultimate compression strength;
CLTE – coefficient of linear thermal expansion