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Master Bond has developed a new nonhalogenated epoxy resin system called EP21HTFR-1, which offers outstanding flame resistance and minimal smoke generation, even on prolonged exposure to open flames.
Based on new proprietary in-house technology Master Bond EP21HTFR-1 is a two component epoxy resin system with a user friendly one to one mix ratio.
It cures readily at ambient or more quickly at elevated temperatures and has a service capability up to 200C.
Unlike other commercially available flame retardant compounds, it does not emit any halogens as well as other noxious and/or toxic vapours even when subjected to open flames for prolonged time periods.
In addition the EP21HTFR-1 is UL94V0 pending.
Master Bond polymer system EP21HTFR-1 is designed for bonding, sealing and casting applications and can be applied by all conventional methods.
A lower viscosity version called EP21HTFR-1LV is available to facilitate casting uses.
The cured EP21HTFR-1 exhibits remarkably high physical strength properties as well as superior resistance to mechanical shock and vibration.
Electrical insulation properties are excellent.
Master Bond EP21HTFR-1 has superior chemical resistance to water, salt solutions, fuels and many other organic as well as inorganic chemicals even after long exposure periods.
The service temperature range is an impressive -50 to +200C.
EP21HTFR-1's flame resistant capability to withstand exposure to open flames with minimal smoke and/or generation of noxious and/or toxic gases makes it the preferred choice for critical aerospace, electronic and industrial assemblies where the flammability potential in service must be minimised and product safety is a primary consideration.  

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