Epoxy Resin for LED lamp

Introduction onEpoxy Resin for LED lampEP-500 has been specially developed for LED Lamp encapsulation with high reliability. It is composed of three parts, including Resin EP-500A, Hardener EP-500B and light diffusant agent. Owing to low viscosity, it can be handled easily. The cured resin possesses excellent mechanical strength, electrical properties and humidity resistance.1. Properties EP-500AEP-500BColorClear, light blueClear, light yellowViscosity cps/40°C1,000 1,40030 50Specific gravity1.1601.1592. Application conditionsMix Ration (weight)EP-500A:EP-500B=100:100Mix Viscosity cps/25°C500 700Pot Life (at 25°C)6 hrs (After Mixing)Cure130°C*40 45 min (Demold)Post Cure120°C*4 5hrs3. Cured propertiesHardness (Shore D)88Volume resistivity ohm-cm>1015Surface resistivity ohm>1014Dielectric constant/KHZ3.15Thermal expansion coefficient mm/mm *°C6.0*10-5Water absorption (100°C*1 hr)%0.35Glass transition temperature °C125 4. Notes(1) In general the diffusant amount is about 3 6 phr of EP-500A.(2) After mixing EP-500A and EP-500B, the viscosity will increase gradually. Cast the mixture within the specified pot life.(3) EP-500A can heat to reduce viscosity for benefiting mixing peel bubble,but it would decrease pot life if the temperature is much higher.(4) Hardener EP-500B which is acid anhydride1 will suck water in atmosphere to form 1, 2-dicargoxylic acid precipitate, so you should screw on the lid when you don't use it, avoiding deteriorate. (5) Don't touch your skin and eyes, if touch skin, washing with soap water; if touch eyes, washing with water, then get to hospital immediately.