CYCLO ALIPHATIC EPOXY RESIN
Epoxy Resin CE is a low viscosity Cycloalphatic Epoxy Resin. The Resin CE with Hardner 509 and Catalyst is recommended for hot curing casting applications. Due to low mix viscosity Silica Floor could be added up to 300 parts. This casting system is specially recommended for outdoor CT applications where difficult climatic conditions prevail and the components are exposed to ultra violet radiations
The specific applications are dry type outdoor transformers, CTs, PTs and outdoor electrical insulators bushings. The use if silica as filler ensures stable dielectric properties under outdoor humid conditions.
The Low viscosity filled system has better advantages
- Good weather and UV radiation resistance suitable for outdoor application
- Good Mechanical and Electrical properties
- Good temperature Shock resistance
- The System could be used for conventional Casting and automatic pressure gelatin application
Properties
- 1. Epoxy Resin CE
- A. Appearance – Clear Transparent Liquid
- B. Viscosity by BF / 25°C – 800-1000 mPa.s
- C. Density – 1.000-1.100 g /CC
- D. Epoxy Equivalent – 180 –200 g/ eqv.
- 2. Epoxy Hardner 509
- A. Appearance : Clear Liquid
- B. Viscosity by BF / 25°C : 100 -200 mPas
- 3. Fillers
- The addition of Powdered mineral fillers such as Silica flour,Al2O3etc is advisable when manufacturing casting that will be subjected to mechanical and electrical stress.Fillers of this type give typical advantages as
- They improve mechanical and electrical properties
- They Reduce shrinkage and exothermic temperature rise during cure
- They lower the coefficient of thermal expansion
- They enhance thermal conductivity
- They increase the modulus of elasticity while reducing elongation at break
- They reduce manufacturing cost
- Silica flour fillers pretreated with silanes are recommended for use in casting intended for outdoor applications
Mixing Properties
- Epoxy Resin CE : 100 p.b.w
- Hardner 509 (H) : 100 p.b.w
- Accelerator : % BOR
- Dried Filler : 300 p.b.w
- Gel time at 80°C – 100 –200 minutes
- Curing 2hrs at 80°C and 8 hrs at – 140°C
Mechanical Properties
- Tensile Strength : 95-110 N /mm2
- Flexural Strength : 170-180 N /mm2
- Compressive Strength : 160-180 N /mm2
- H.D.T. : 97-110 °C
- Hardness : 80-90 Shore D
Electrical Properties
- Tracking Resistance Volts : > 7600
- Dielectric Strength kV/ mm : > 17 minimum
- Volume Resistivity Ohm.cm : 1015