Posted to News on 30th Jan 2024, 09:00
Epoxy for indirect food contact applications
For indirect food applications, particularly where the surrounding environment may be exposed to aggressive chemical washdowns or antibacterial agents, Master bond has introduced the EP42HT-2FG Black two-part, moderate heat cured epoxy.
The epoxy withstands exposure to a wide range of harsh chemicals, including acids, bases and solvents. It possesses good flow properties and can be employed for bonding, sealing, potting, and casting.
This compound has a relatively long working life of 105-150 minutes for 100 grams of the mixed material at 75F. The colour of Part A is black, and Part B is light amber, with a mix ratio of 100 to 30 by weight. EP42HT-2FG Black cures optically opaque, and the recommended cure schedule is overnight at room temperature, followed by a heat cure at 150-250F for 3 to 4 hours.
This thermally stable system offers a glass transition temperature of 145-150C and is serviceable over a wide temperature range from -60F to 450F. It has a high tensile strength of 11,000-12,000 psi at room temperature and a tensile modulus of 400,000-450,000 psi. It is electrically insulative with a volume resistivity greater than 1014 ohm-cm and a dielectric constant of 4.6 at 60 Hz, at room temperature. These attributes make EP42HT-2FG Black suitable for potting and encapsulation type applications.
It is available in 1/2 pint, pint, quart, and gallon kits. Specialty packaging is also available in premixed and frozen syringes.
