Posted to News on 27th Jul 2007, 19:42
Transparent epoxy adhesive boasts rapid cure
Mater Bond EP30-4 is a transparent, low-viscosity, fast-curing epoxy adhesive, sealant and coating. It is recommended for applications requiring rapid cure without adding external heat. When EP30-4 is spread in films as thin as 0.6mm (0.025inch), it will become tack-free in as little as 30 minutes. This makes it suitable for use as a conformal coating where heating the components or substrate is not possible.
Another property - which is claimed to be unique - is the excellent optical clarity of the system. Offering superb spectral transmission in thin sections and superior non-yellowing properties, it is useful for fibre-optic bonding applications.
The two-component EP30-4 epoxy produces high-strength, rigid bonds with tensile strength greater than 72MN/m2 (10,500psi) and bond shear strength exceeding 13.8MN/m2 (2000psi). Efficient to process, it has a working life of 8-10 minutes and can easily be applied by spraying or flow coating.
Environmental performance
EP30-4 bonds are resistant to chemicals including water, oil and most organic solvents over the wide temperature range of -50degC to more than 120degC (-60 to 250degF). Adhesion is excellent with both similar and dissimilar materials including metals, glass, ceramics, wood, vulcanised rubbers and many plastics.
Master Bond EP30-4's excellent electrical insulation properties include a volume resistivity greater than 1016ohm-cm, a dielectric constant and dissipation factor respectively of 4.3 and 0.022 at 100Hz. This, together with its low shrinkage, makes it an excellent potting epoxy for small castings.
Master Bond Polymer Adhesive EP30-4 is widely used in electronic, fibre-optic, optical, OEM, medical and various industrial applications where thin sections of epoxy must cure rapidly without adding heat. It is available in premixed bi-packs and cartridge/gun packaging for convenient dispensing as well as in pint, quart, gallon and 5-gallon containers.
