UL Certified Master Bond EP21AC Resists Arcing without Igniting

Master Bond EP21AC is a two part epoxy with a non-halogenated filler that is formulated for applications where arc resistance and flame retardancy are required. Electrical arcing is a challenge for numerous electronic or electrical devices; this occurs when electricity jumps from one connection to another, resulting in an electrical breakdown. EP21AC is designed primarily with the aim to prevent arcing related issues. “EP21AC withstood over 150 arcs without igniting and therefore was assigned the highest PLC (Performance Level Category) of 0 under the UL746A High Amp Arc Ignition test,” says Rohit Ramnath, Senior Product Engineer. “The compound is also flame retardant, as per the UL94HB standard for flammability testing. This combination of unique performance properties makes EP21AC suitable for encapsulating, potting or coating in many demanding applications.” The system is toughened, with an elongation of 10 to 20%, and is capable of resisting thermo-mechanical stresses. It is an excellent electrical insulator with a volume resistivity greater than 1014 ohm-cm, and a dielectric constant of 4.7 at 75°F. Other noteworthy properties include a tensile strength of 5,000-6,000 psi, and a tensile modulus of 300,000-350,000 psi at 75°F. It is serviceable over the temperature range of -60°C to +90°C [-75°F to +194°F]. For identifying opportunities for epoxy resin in the global composites market: growth trends, forecast and competitive analysis, please visit https://www.lucintel.com/epoxy-resin-in-composites-industry.aspx