17-04-2020 | Masterbond | Subs & Systems
Master Bond EP40Med is a two-part epoxy system, combining toughness and a low tensile modulus while still giving a relatively high lap shear strength. It satisfies the requirements of ISO 10993-5 testing and is, therefore, considered to be non-cytotoxic. This compound can be employed for bonding, sealing, coating and encapsulating.
The system resists sterilisation to gamma, EtO, chemicals, and liquid disinfectants. It is suggested for application in medical device manufacturing and repair of both disposable and reusable instruments. The epoxy is an effective adhesive for applications where robustness and flexibility, as well as good structural strength, are required. The formulation bonds favourably to polycarbonates, acrylics, metals, ceramics and composites. This flexible epoxy has an elongation of 80-90%, a lap shear strength of 1,600 to 1,800psi and a low tensile modulus of 25,000 to 50,000psi. The epoxy is a reliable electrical insulator with a volume resistivity over 1012Ohm-cm.
This system is simple to use with a one to one mix ratio by weight or volume and a low to moderate viscosity of both parts A and B. The working life of a mixed 100g batch is around 120-150 minutes. The optimal cure schedule is overnight at room temperature followed by a post-cure for 2-3 hours at 150F. The product is offered in 1/2 pint, pint, quart, and gallon kits. Speciality packaging is offered in gun dispensers and premixed and frozen syringes.
