Master Bond EP41S-6 is a two part epoxy system that meets UL 1203 for Explosion-Proof and Dust-Ignition-Proof Electrical Equipment for Use in Hazardous (Classified) Locations. The rationale for this test is to prevent explosions and dust ignitions in industrial settings. The 1203 UL designation is specifically for a sealing compound for use in hazardous locations conforming with Class I, Groups A, B, C and D; Class II, Groups E, F, and G Hazardous Locations.
Potting
Master Bond EP41S-5LV is a two part epoxy system for potting, bonding, sealing, and coating with a forgiving 100 to 25 mix ratio by weight. EP41S-5LV will cure at room temperature or more rapidly at elevated temperatures. The optimum curing schedule is overnight at 75°F followed by 3-4 hours at 150-200°F. It has stellar resistance to a wide array of chemicals, especially solvents, alcohols, fuels including gasohol, acids and bases. Most noteworthy is its resistance to ethylene chloride, acetone and ethanol. Upon mixing, EP41S-5LV is a low viscosity liquid with good flow.
Master Bond EP39MAOHT is a two component, thermally conductive, electrically insulative epoxy for bonding, sealing, coating, potting and encapsulation. The mix ratio is a forgiving one to one by weight, and after mixing, the epoxy flows smoothly. Upon mixing, this lower viscosity system has a relatively long working life. EP39MAOHT will cure at room temperature in 3-5 days. An alternative is to heat cure for 3-4 hours at 150-200°F. An optimum cure schedule would be overnight at room temperature followed by 3-5 hours at 150-200°F.
Product Advantages
- Exceptionally low mixed viscosity and low exotherm; contains no solvents or other volatiles.
- Long working life at ambient temperatures.
- Superior physical strength and electrical insulation properties.
Master Bond EP41S-5 is a two part epoxy system for bonding, sealing and coating with a forgiving 100 to 25 mix ratio by weight. EP41S-5 will cure at room temperature or more rapidly at elevated temperatures. The optimum curing schedule is overnight at 75°F followed by 3-4 hours at 150-200°F. It has exemplary resistance to a wide array of chemicals, especially acids, bases, alcohols, fuels and solvents. Most noteworthy is its resistance to methylene chloride, phenol (10%), nitric acid (30%) as well as ethanol and acetone.
Master Bond EP21H is a two component epoxy system with exceptionally good clarity and a unique optical transmission profile for an epoxy. Nearly all epoxies display minimal light transmission below 330 nm. EP21H has a special crosslinking profile that allows for exceptional light transmission in the 250-365 nm spectra. The light transmission in sections of 0.005 inch or less exceeds almost 95% from 260-2,000 nm. EP21H is easy to handle having a long open time. EP21H will cure at room temperature and it can be accelerated by adding heat.
Master Bond EP3RR-80 is a one part epoxy that is particularly compatible for sealing, potting and encapsulation applications. This system, which is not premixed and frozen, has unlimited working life at room temperature. Unlike typical one part epoxies, EP3RR-80 will cure in 45-50 minutes at 175-180°F, or in 25-30 minutes 250°F. Although optimal properties are obtained with the higher temperature cure, the 175-180°F cure provides very good physical strength and electrical insulation values as well. EP3RR-80 has a moderate viscosity with excellent flow.