Epoxy resin 2120A/B-1
A, Purpose and Explanation
Epoxy resin 2120 ab - 1 is epoxy resin adhesive cured under the condition of normal temperature and low temperature, high hardness, perfect anti-yellowing , low viscosity, fine natural defoaming performance, high transparency, good ultraviolet light resistance. Dedicated to cover carbon fiber products, surfboard, LED, skis, mould filling, and the insulation of other electronic components , moistureproof, potting, confidential encapsulation , etc.

B, The properties before hardening
The main agent2120A-1 Curing agent2120B-1
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 ℃×2H to 4H or 55℃×1.5H(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 25
4）Volume resistivity 　 Ohm3 1x1015
5）Surface resistance Ohmm2 5X1015
6）Thermal conductivity W/M.K 0.59
7）Induced electric loss 　　 1KHZ 0.42
8）Withstand high temperature ℃ 140
9）Moisture absorption 　 　 % <0.15
10）Compressive strength Kg/mm2 11.4
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.