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WL-700MA/MB epoxy
I. Introduction:
WL-700MA/MB heat curing epoxy resin system material, the main components of electronic grade low viscosity epoxy resin, additives and anhydride curing agent. 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.
Second, the conventional performance:
Testing methods or conditions of test items WL-700MAWL-700MB
The appearance of visual purple to light yellow transparent liquid Colorless transparent liquid
Density 25 ℃ g/cm31.1 ~ 1.21.1 ~ 1.2
Viscosity 40 ℃ mpa · s600 ~ 100030 ~ 60
Half year shelf life at room ventilation
Third, the use of technology:
Item Unit or conditions WL-700MA/MB
Mixing weight ratio of 100:100 ratio
Can use the time to 25 ℃, 35g, hrs> 2
Curing conditions (for reference) ℃ / hrs, <3mm85 ~ 90 / 6 ~ 4
℃ / hrs, 3 ~ 5mm85 ~ 90 / 6
℃ / hrs, 5 ~ 8mm75 / 3 +85 ~ 90 / 3
℃ / hrs,> 8mm65 ~ 70 / 4 +85 ~ 90 / 3
3.1 A prior to use material preheated to 50 ℃, and then, to join B material, mixing evenly.
3.2 (3 torr/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.
3.3 Potting the best conditions in the vacuum epoxy potting.
3.4 If using the DF-090 when the light diffusion agent B to increase the amount of material to increase the amount of half the amount of DF-090.
3.5 B such as the use creams to increase the amount of material to increase the quantity and add the same amount of color paste.
Fourth, use:
For digital control and lattice light emitting device.
Fifth, after curing characteristics:
Item Unit or conditions WL-700MA/MB
Hardness Shore-D> 85
Volume resistivity 25 ℃, Ω · cm> 4.1 × 1015
Surface resistance 25 ℃, Ω> 2.4 × 1014
Dielectric strength 25 ℃, kV / mm> 23
Linear expansion coefficient of 1 / ℃ <6.0 × 10-5
Absorbent 100 ℃ / 1h,% <0.4
Tg values ℃> 100
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:
6KG plastic barrel.
ú Note: The above performance data for the product in 70% humidity, temperature 25 ℃, the typical test data for reference purposes only customers, and can not guarantee that a particular environment can be achieved when all the data. Please use customers, subject to the measured data.
