TAGS: Epoxy Adhesives
Master Bond launches Master Bond EP4G-80Med is a one-part epoxy designed for use in the assembly of medical devices. The epoxy system is formulated with a non-metallic, graphite filler, which leads to good thermal and electrical conductivity.
The epoxy possesses a thermal conductivity of 1.44-1.73 W/(m•K) and a volume resistivity of 50-100 ohm-cm. Furthermore, it complies with the ISO 10993-5 guidelines and is considered to be non-cytotoxic.
Low-viscosity Non-cytotoxic Epoxy
Master Bond EP4G-80Med bonds well to a variety of substrates including metals, glass, ceramics, rubbers and many plastics. It is very effective as an EMI/RFI shielding compound and can also be used for static dissipation purposes. This system does not need high heat to cure; it cures readily in 60-90 minutes at 80°C. Post curing for 1-2 hours at 80°C is commonly recommended as it will optimize the overall properties of the epoxy. Its curing profile makes it suitable for many applications involving heat sensitive substrates.
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The product’s unique feature is that despite incorporating a graphite-based filler material it actually exhibits an excellent flow profile, especially for an electrically conductive system, with a viscosity of 4,000-10,000 cps. It also provides a low coefficient of thermal expansion of around 15-20 ppm/C at room temperature”, said Rohit Ramnath, senior product engineer.
High-glass Transition Temperature & Sterilants Resistant
Master Bond EP4G-80Med is a dimensionally stable epoxy that offers a tensile strength of 2,000-3,000 psi, a tensile modulus exceeding 750,000 psi and a Shore D hardness of 75-85 at 75°F. This system has a high glass transition temperature of 130-140°C and is serviceable over the temperature range of -50°C to +175°C. It can withstand exposure to water, antimicrobial agents and many chemical sterilants.
Master Bond EP4G-80Med has a relatively long working life of 8-12 hours and must be refrigerated or frozen for storage. This black-in-color product is packaged in 10cc and 30 cc syringes, which are shipped in dry ice. After thawing it is easy to apply. EP4G-80Med does not contain any solvents and is RoHS compliant.
Source: Master Bond