Ultra-High Temperature Dispersants
Dispersants based on Polynovatec proprietary polymers exhibit a remarkable stability to high temperatures. Under air, they were found to show no sign of decomposition at temperatures as high as 450 oC.
Stable dispersions of titanium dioxyde (TiO2), montmorillonite, metal particles and carbon-based materials were easily achieved using the Polynovatec dispersants. Let us know which material you want to disperse and we will be more than happy to try it for you.
The fabrication of the dispersion is facilitated by the unique solubility of the Polynovatec dispersants. It can be sold as a dry white powder, as an ethanol solution (50 wt%) or as an aqueous solution (50 wt %). Depending on the concentration, the viscosity of the solution is low or moderate (1 - 200 cP)
Ultra-High Temperature Epoxys
Polynovatec type epoxy resins are bisphenol free, with Tg as high as 350 C, and bulk modulus typically between 2-6 GPa (exceptionally 8 GPa) without any added filler. Their coefficient of thermal elongation (CTE) is as low as 50 ppm/(oC), even at temperatures as high as 300 oC. The resins exhibit a low swelling in organic solvents and in water (typically less than 5 wt% after 10 days immersion). They are also not degraded by harsh environments such pH = 1 or high temperature (300 oC) for several days.
Depending of your application, Polynovatec can also provide epoxy monomers or hardeners. Polynovatec technology is also compatible with conventional epoxy formulations. Using a BADGE-based formulation, it was shown that using 5% Polynovatec polymer as additive generated a 40 oC increase in Tg. More information can be found in this technical publication.
Ultra-High Temperature Fibers
The Polynovatec polymers can be easily electrospun to form unique fibers (size can be varied between 200 nm and 5 micrometers). These polymeric fibers do not degrade at temperature as high as 300 oC. Co-electrospinning in the presence of fillers such as fluorescent quantum dots, titanium dioxide photocatalytic particles or dyes can be easily achieved. Conducting fibers can also be achieved by co-electrospinning Polynovatec polymers and carbon nanotubes