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.
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