Toughened, non-drip epoxy features high glass transition temperature

Supreme 121AOND not only provides excellent chemical resistance, but also offers a high glass transition temperature (Tg) of 200-210degC. It meets NASA low outgassing specifications per ASTM E595 testing.

This epoxy has reliable electrical insulation properties with a volume resistivity exceeding 1014 ohm-cm at 75degF. It possesses high bond strength with a tensile strength of 6,000-7,000 psi and a tensile modulus of 750,000-850,000 psi, at room temperature.

Supreme 121AOND retains its strength profile even at high temperatures with a tensile modulus of 650,000-750,000 psi at 300degF. It offers a wide service temperature range from -62degC to 288degC].

Supreme 121AOND cures at elevated temperatures and has a long working life of 2-3 days. A typical cure schedule is 1-2 hours at 200-210F followed by 3-4 hours at 250degF, and another 4-6 hours at 300degF. Additional post curing at 350-400degF for 2-4 hours will further enhance product properties. Although the cure schedule is not rapid, the key benefit conferred by this system is high structural strength even at elevated temperatures.

The system bonds well to a wide variety of substrates including glass, fibres, metal, ceramics, rubbers and plastics. Part A is black, Part B is dark brown. It is available in standard packaging ranging from half pint kits to 5 gallon kits.