OEM

Master Bond EP30-4Med is a two part epoxy system with a fast set up time that cures at room temperature, or even more rapidly with a bit of heat. This low viscosity system meets the requirements of ISO 10993-5 testing and is therefore considered to be non-cytotoxic. It can be used for bonding, sealing, and small encapsulation applications. It can also be utilized as a coating, especially when optical clarity is needed.

EP30-4Med is designed to not only resist EtO sterilization, but also to withstand most detergents, disinfectants, bleaches and liquid sterilants. It is recommended for applications in medical device manufacturing for both disposable and reusable instruments. EP30-4Med has an easy to handle 2 to 1 mix ratio by weight and possesses a low viscosity of 1,000-3,000 cps for Part A and 20-100 cps for Part B. Mixing is effortless, especially with the use of a double barrel cartridge and static mixer. This epoxy has a refractive index of 1.55 and maintains good electrical insulation properties over time. Its volume resistivity is greater than 10¹⁵ ohm-cm. It forms strong bonds even in thin sections.

EP30-4Med is a relatively fast setting system, and in some cases, depending upon the application and the substrates, fixtures often can be removed in 15-25 minutes. Full cure can be achieved in about 24 hours at 75°F. The ideal cure schedule is around 1-2 hours at 75°F followed by 1-2 hours at 135-150°F. Upon cure, it exhibits a Shore D hardness of 75 to 85. The product is available in 1/2 pint kits, pint kits, quart kits, and gallon kits. Specialty packaging is available in gun dispensers.

Master Bond MasterSil 153AO is an addition cured two part silicone with a self priming property. It has a high tensile lap shear strength, especially for a silicone. The system is thermally conductive and electrically insulating. “The key feature of MasterSil 153AO is that it provides the ability to minimize stress, with no compromise on strength. Although it is not considered a structural adhesive, it provides a truly remarkable combination of flexibility and strength that other silicones do not provide”, says Rohit Ramnath, Senior Product Engineer.

This silicone product has an elongation between 100-120%, and a tensile lap shear strength of 700-800 psi. It provides a thermal conductivity of 0.93-1.08 W/(m•K), a volume resistivity of more than 10¹⁴ ohm-cm, a coefficient of thermal expansion of 150-180 x 10^-6 in/in/°C, and hardness of 65-75 Shore A. It is serviceable over the temperature range of -65°F to +400°F.

With an easy to use mix ratio of 1 to 1 by weight, MasterSil 153AO cures with the addition of moderate amounts of heat. For example, optimal cure schedule is overnight at room temperature followed by 2-4 hours at 135°F-185°F. Upon mixing, it retains its smooth paste consistency and minimal flow. It has a long working life of 4 to 6 hours for a 100 gram mass at 75°F.

This compound bonds well to a variety of substrates including metals, glass, ceramics, many plastics and silicone rubbers. It is available for use in kits, with sizes ranging from ½ pint, pint, quart to gallons. It is white in color. MasterSil 153AO is generically low outgassing, contains no solvents, has a low linear shrinkage upon curing and is RoHS compliant.

Master Bond EP77M-FMed is a two part epoxy adhesive and sealant designed for use in the assembly of medical devices. It meets the ISO 10993-5 requirements and is not considered to have a cytotoxic effect. “This product has been formulated to provide excellent electrical and thermal conductivity properties, while keeping in mind processing constraints for heat sensitive components in sensors used for medical devices or wearable electronics,” says Rohit Ramnath, Senior Product Engineer.

As a silver filled system, EP77M-FMed provides excellent electrical conductivity, with a low volume resistivity of 10^-3 ohm-cm. It provides a thermal conductivity of 1.44-1.73 W/(m•K), resists thermal cycling and has a Shore D hardness of 40-50 at room temperature. It can withstand exposure to water, liquid sterilants, anti-microbial disinfectants and EtO sterilization. It offers a tensile strength of 2,000-3,000 psi and a tensile modulus of 250,000-300,000 psi at 75°F. This system is serviceable over the temperature range of -100°F to +250°F.

EP77M-FMed has an easy to use one to one mix ratio by weight or volume and is fast setting, especially when compared to other silver filled systems. It sets up in 15-20 minutes at 75°F and fully cures at room temperature in 24 hours. This compound has a flowable paste like consistency and bonds well to a variety of substrates including metals, glass, ceramics, rubbers and many plastics. It is packaged in 20 gram, 50 gram, 100 gram, one pound and multiple pound cans. The color of Parts A and B is silver. EP77M-FMed does not contain any solvents and is RoHS compliant.

Master Bond EP51CC is a two component, fast setting epoxy with a color coding system where Part A is white and Part B is black. The two parts combine into a uniform gray color paste, which indicates proper mixing. This fast curing, non-drip compound is ideal for bonding and sealing applications with a forgiving mix ratio of one to one by weight or volume.

This high performance epoxy has a rapid set up time, convenient handling, and good physical properties. It sets up very quickly at room temperature, with a working life of 3-5 minutes for a mixed 50 gram batch. The exact fixture time in an application context can vary from a few minutes to several hours, depending on multiple factors including, but not limited to the size of the components, the substrates being bonded, curing temperature and the amount of adhesive applied. An interesting feature of EP51CC is the role that the cure schedule plays in the bond strength. For example, it offers a lap shear strength of 700-800 psi when cured at room temperature for 24 hours, but when cured at room temperature for 8 hours followed by 3 hours at +250°F, its lap shear strength increases to 2,300-2,500 psi. It features high strength bonds to a variety of substrates including metals, composites, glass, ceramics, vulcanized rubbers, and many plastics with a tensile modulus of 100,000-150,000 psi at room temperature. EP51CC is electrically insulative with a volume resistivity of >10¹⁴ohm-cm and a dielectric strength of 450 volts/mil.

Formulated for temperatures ranging from 4K to +250°F, this epoxy is also suitable for challenging cryogenic applications. EP51CC is available in ounce kits, half pint kits, pint kits, quart kits, gun applicators, and FlexiPaks® for ease of use.