OEM

Thermally Conductive, Chemically Resistant Epoxy Sealant

Master Bond EP62-1AO is a two part epoxy adhesive and sealant with an exceptionally long working life of 12-14 hours at ambient temperature for a 100 gram mass. This makes it beneficial when bonding and sealing large or intricate parts that may need ample time for mixing and applying. This material has a high strength profile with a tensile modulus of 600,000 to 650,000 psi and a tensile strength of 5,000 to 6,000 psi. The service temperature range is -60°F to +450°F and it offers a glass transition temperature of 120-125°C.

EP62-1AO is both electrically insulating and thermally conductive with a thermal conductivity value of 9-10 BTU•in/(ft2•hr•°F), or 1.30-1.44 W/(m•K). Its chemical resistance profile is robust, especially when compared to other thermally conductive epoxies. It can withstand a wide range of acids, bases and solvents. EP62-1AO has a low coefficient of thermal expansion of 18-21 x 10-6 in/in/°C.

The viscosity of the mixed compound is of a thixotropic paste consistency. There are several cure schedule options to choose from, all of which require a relatively low heat activation. Additional post curing for 2 to 4 hours at 200-300°F is recommended to obtain optimal performance properties. It is available in 30 cc syringe kits, 1/2 pint kits, pint kits, and quart kits. The color of Part A is off white and Part B is dark brown.

Using Adhesives for Mass Production

Adhesives systems for mass productionSpecialized Master Bond adhesive systems are engineered for mass production applications.

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Thermally Conductive, Electrically Insulative Potting Compound Resists High Temperatures

Master Bond Supreme 121AO is a NASA low outgassing approved epoxy suitable for bonding, sealing and potting applications. Featuring a high glass transition temperature of 200-210°C, it resists temperatures up to 550°F. This system exhibits an element of toughness, and is not as stiff as conventional epoxies that withstand extreme temperatures.

Supreme 121AO has a noteworthy strength profile with a tensile modulus of 750,000 to 850,000 psi at room temperature and a compressive strength of 26,000 to 28,000 psi. Its thermal conductivity is 4-5 BTU•in/(ft2•hr•°F), and it is also electrically non-conductive. Shrinkage upon cure is exceptionally low. This system not only withstands thermal cycling and mechanical stresses, but also resists many chemicals, including water, oils, fuels, acids and bases. Supreme 121AO may be used in aerospace, electronic, opto-electronic and OEM applications.

This two part epoxy has a mix ratio of 100 to 80 by weight. The viscosity of the mixed compound is 10,000-25,000 cps, making it readily pourable for potting and casting. It has a long working life after mixing of 2-3 days, for a 100 gram batch. The recommended cure schedule is 1-2 hours at 200°F followed by 3-4 hours at 250°F, and then 4-6 hours at 300°F. Additional post curing at 350°F for 2-4 hours will further enhance product properties.

Adhesives Used in Mass Transit

Adhesives systems for mass transitSubways, city buses, ferries, cable cars, trams, rail networks enable large volumes of people to move safely, reliably, speedily, comfortably, cost effectively between many locations.

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High Tg, Ultra Low Viscosity Epoxy meets NASA Low Outgassing Specifications

Master Bond Supreme 112 is a new two part epoxy for bonding, sealing, potting, and impregnation applications. It is a heat curable system with a very low viscosity of 50-200 cps and a long open time of 2-3 days at room temperature for a 100 gram batch. Supreme 112 features a high glass transition temperature of 190-195°C and is serviceable up to 288°C (550°F). This compound bonds well to a variety of substrates including metals, composites, glass and ceramics. As a toughened system it withstands thermal cycling and mechanical stresses.

“Supreme 112 can be applied successfully not only in bonding applications, but it can also be used in porosity sealing. Additionally, it offers a high tensile strength of 11,000-12,000 psi”, says Rohit Ramnath, Senior Product Engineer. “This non-solvent based compound also meets NASA low outgassing requirements.”

Supreme 112 retains its electrical insulation properties even at elevated temperatures. While this system has a relatively easy to use mix ratio, 100:70 by weight, it requires a three step oven curing process of 1-2 hours at 200°F, followed by 3-4 hours at 250°F and then 4-6 hours at 300°F. Despite the long cure schedule, Supreme 112 offers a unique combination of performance properties advantageous in many applications in aerospace, electronic and automotive industries.

Adhesive Use in Metal Fabrication

Adhesives for metal fabricationMaster Bond one and two component epoxies and urethane modified epoxy hybrids frequently have replaced mechanical fastening, welding in metal fabrication assembly applications.

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UV Curing Adhesive Passes NASA Low Outgassing Specifications

Master Bond UV10TK40M is a one part UV curable system, which is not oxygen inhibited, and can be used for bonding, sealing and coating applications. UV10TK40M is optically clear, with a refractive index of 1.55. It has a high glass transition temperature (Tg) of 135-140°C and is serviceable from -60°F to +450°F. Its hardness upon curing is 75-85 Shore D.

“Not only does it meet NASA low outgassing specifications, but this system also withstands 1,000 hours at 85°C/85% RH. Its Shore D hardness was not adversely affected even after exposure to elevated temperatures and high relative humidity”, says Rohit Ramnath, Senior Product Engineer. UV10TK40M cures in 20-30 seconds when exposed to a UV light source emitting at a wavelength of 320-365 nm with 20-40 milliwatts per cm2.

UV10TK40M bonds well to glass, surface treated metals and plastics such as polycarbonates and acrylics. UV10TK40M is recommended in fiber-optic, optical, opto-electronic and electronic applications where heat resistance and a moderate viscosity are needed. The product is available in 1/2 pints, pints, quarts, gallons and syringes.

Adhesives for the Chemical Industry

Adhesives for chemical industryMaster Bond adhesives, sealants, coatings play a key role in the assembly of equipment used in manufacturing specialty, commodity, consumer, chemicals.

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Adhesives, Coatings and Sealants for Textile Machines

Adhesives for textile manufacturing equipmentHigh performance Master Bond adhesives, sealants, coating compounds have played an indispensable role in the assembly of high tech digital textile manufacturing equipment.

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Toughened Epoxy Polysulfide Hybrid Offers Advanced Chemical Resistance

Master Bond EP21TP-2NV is a two part epoxy polysulfide formulated for use as an adhesive, sealant and potting system. It withstands prolonged exposure to many harsh chemicals including fuels, oils, hydrocarbons and hydraulic fluids. It is also fully RoHS compliant, meeting RoHS3 Directive (EU) 2015/863.

EP21TP-2NV offers an elongation between 40-80% at room temperature and superior toughness with a tensile strength of 3,000-4,000 psi. It resists aggressive thermal cycling over the service temperature range of -80°F to +250°F [-62°C to +121°C]. With a dielectric constant of 3.7 at 60 Hz, the system provides excellent electrical insulation properties.

Master Bond EP21TP-2NV cures at room temperature in 48-72 hours to form a rigid material with a Shore D hardness measuring 60-65. A unique feature of EP21TP-2NV is its ability to cure softer with the addition of heat. For example, when cured at 200°F for 2-3 hours its hardness decreases to 15-20 Shore D.

EP21TP-2NV bonds well to a variety of substrates such as metals, glass, ceramics and many rubber and plastic materials. This compound is available in standard size containers from ½ pint, pint, quart and gallon kits as well as specialty packaging including double barrel syringes and gun dispensers.

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