Electronic Products & Technology

Electrically insulative epoxy delivers abrasion resistance

Stephen Law   

Electronics Production / Materials bonding coating encapsulating epoxy materials potting sealing

MASTER BOND EP21NS two part epoxy can be used for bonding, coating, sealing and potting/encapsulating. It has a nanosilica filler that imparts dimensional stability and abrasion resistance. When measured according to ASTM D4060, standard test method for abrasion resistance, with CS-17 wheel for 1,000 cycles, EP21NS exhibits a very low weight loss of 25 mg. This formulation is a reliable electrical insulation with a volume resistivity greater than 1015 ohm-cm, a dielectric constant of 2.6 at 16.4 GHz and a dielectric strength of 450 volts/mil at 75°F, for a 1/8th inch thick specimen. Product is serviceable over the temperature range of -80°F to +250°F. 

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