Key Features:- Electrically insulating
- Long working life
- Higher viscosity
- Outstanding adhesion to rubbers
- Excellent thermal cycling resistance
- High peel strength
Product Description: Master Bond EP21TDC-4 is a two component, very flexible epoxy system for high performance bonding, sealing and coating. It has a one to four mix ratio by weight. EP21TDC-4 has a room temperature cure that can be accelerated by adding heat. The optimum cure schedule is overnight at room temperature followed by 3-4 hours at 150-200°F. An unusual feature of this product is that straight heat curing results in a product that is slightly softer (Shore A 60), than the one with the optimum cure (Shore A 75). The cured system has a peel strength greater than 30 pli and an elongation of over 200%. EP21TDC-4 bonds well to a wide variety of metals, plastics and especially rubbers. In fact, it may adhere well to untreated rubber materials such as neoprene, nitrile, SBR and occasionally EPDM rubber compounds; materials that normally require time consuming surface preparation. The cured system has excellent electrical insulation properties along with good chemical resistance to oils and water. The epoxy has superior resistance to rigorous thermal cycling along with an outstanding ability to resist mechanical shock and vibration. EP21TDC-4 has an exceptionally long open time greater than 90 minutes. It has an operating temperature range of -100°F to +250°F, with superb low temperature serviceability. It is widely used in OEM, electrical, electronic, repair and maintenance type applications.Product Advantages: - Convenient mixing: non-critical, one to four mix ratio, by weight, available in premeasured kits
- High viscosity; product spreads evenly and smoothly
- Versatile cure schedules: ambient temperature cures or faster elevated temperature cures
- High peel strength and exceptionally robust resistance to thermal cycling and shock
- Bonds especially well to rubber including neoprene, nitrile, SBR and occasionally EPDM
- Outstanding resistance to thermal cycling
Information provided by Master Bond Inc. |
