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A, Purpose and Explanation
Epoxy resin 828 ab is epoxy resin adhesive cured under the condition of normal temperature and low temperature, high hardness, good flowing property, fine natural defoaming, fast curing. Dedicated to cover carbon fiber products, surfboards, car materials cover, LED potting, mould filling, and the insulation of other electronic components , moistureproof, potting, confidential encapsulation , etc.
B, The properties before hardening
The main agent828A Curing agent828B
Color: Colorless transparent Colorless transparent
Specific gravity: 1.15 0.96
Viscosity25℃: 6000-10000CPS 250MAXCPS

C, Conditions of usage
1)Mixing ratio: A: B = 100:50(weight ratio)
2)Hardening conditions: 25 ℃×3H to 4H or 55℃×30min (2 g)
3)Usable time: 25℃×15min (100g)

D, Application method
1.Working environment: The container of holding glue please keep clean, A and B part should be in accordance with the weight ratio, weigh accurately , mix fully along the container wall by clockwise and use after 3 to 5 minutes .
2.According to the operational time and dosage of mixing rubber, avoid wasting. When the temperature below 15 ℃, please put A glue to glue again after warm up to 30 ℃, easy to operate, (a glue will be thicken when low temperature ); Must be sealed lid after use, avoid product rejection caused by moisture absorption.
3.When the relative humidity is more than 85%, the curing surface easy to absorb moisture in the air, form a layer of white mist, so when the relative humidity is more than 85%, is not suitable for room temperature curing, s est to use the heat curing.

E, The properties after hardening
1) Hardness shore D <90
2）Withstand voltage KV/mm 22
3）Flexural strength Kg/mm2 28
4）Volume resistivity 　 Ohm3 1x1015
5）Surface resistance Ohmm2 5X1015
6）Thermal conductivity W/M.K 1.36
7）Induced electric loss 　　 1KHZ 0.42
8）Heat Deflection temperature ℃ 80
9）Moisture absorption 　 　 % <0.15
10）Compressive strength Kg/mm2 8.4
The above performance data is typical data measured by the laboratory environment under the condition of the temperature of 25 ℃,the humidity of 70%. For customer’s reference only.