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I. Introduction:
1800A/1800B heat curing epoxy resin system packaging material, from the main agent, curing agent, light diffusion agent is composed of three parts, the main ingredient for the electronic-grade low-viscosity epoxy resin, additives, anhydride and high diffusion fillers. The following features:
1. Mixing low viscosity, good deaeration;
2. Room temperature can be used on long, medium temperature curing speed;
3. After curing excellent mechanical and electrical properties; shrinkage rate is small;
4. Cured good light transmission.
Light-emitting diode (LED)
Second, the conventional performance:
Testing methods or conditions of test items 1800A1800B
The appearance of visual purple transparent liquid Colorless transparent liquid
Density 25 ℃ g/cm3 1.1 ~ 1.2 1.1 ~ 1.2
Viscosity 40 ℃ mpa · s 800 ~ 1300 30 ~ 50
Ventilation from year to year shelf life at room temperature
Third, the use of technology:
Item Unit or conditions of 1800A / B
Mixing weight ratio of 100:100 ratio
Can use the time to 40 ℃, 35g, hrs> 3.5
Curing conditions ℃ / hrs 130 ~ 140/0.5 +100 / 6 ~ 8 aging.
3.1 1800A/1800B creams recommended amount of diffusion agent (weight ratio):
HL-002 2 ~ 5%
HL-003 1 ~ 3%
HL-004 2 ~ 4%
DF-090 1.5 ~ 5%
3.2 A prior to use material preheated to 60 ℃, and then, to join B material, mixing evenly.
3.3 (3 toor/40 ℃) under the conditions about the (A + B) mixture of vacuum deaeration, see the surface decreased by 10 to 15 minutes to stop off foam.
3.4 The device is encapsulated in (70 ~ 90 ℃) temperatures in the pre-baking 1 hour, remove the device within the adsorption of water (in terms of light).
3.5 Potting the best conditions in the vacuum epoxy potting.
Fourth, use:
1800A / B LED light-emitting diodes for the package.
Fifth, after curing characteristics:
Item Unit or conditions of 1800A / B
Hardness Shore-D ≥ 90
Volume resistivity 25 ℃, Ω · cm 4.1 × 1015
Surface resistance 25 ℃, Ω 2.4 × 1014
Dielectric strength 25 ℃, kV / mm 24
Linear expansion coefficient cm / cm / ℃ <6.0 × 10-5
Absorbent 100 ℃ / 1h,% <0.4
Tg values ℃> 120
VI, storage, transportation and precautions:
1. Such products of non-dangerous goods, as a general chemical storage and transportation, storage period, see drum.
2. Please use the sights of the product model, then the condemnation; accurate weighing, please, stir.
3. B material easy to absorb moisture, tightly closed immediately after use.
VII, packaging specifications:
Packaging plastic barrels 6KG, 24KG / box.
