LED Silicone Package AS-2535
AS-2535 is the development of our two-component heat curing silicone optical material, can effectively absorb the stress caused by the internal thermal cycle, protect the chip and the bonding wires. As the electronics industry towards the direction of the rapid development of lead-free, silicone material has become the best LED product package.
Scope of application
All kinds of applications that require high flux SMD 5050/3528/3014 and COB packaging and other products. LED, various solar cell encapsulation. Products high transmittance, anti-curing effect, light is small, the product of technical indicators 300 degrees seven days strengthened experiment did not change, no cracks, no hardening, a wide range.
● high transparency, high refractive index, high hardness, high purity
● Excellent heat resistance and dielectric properties
● cured by heat, various substrates with good adhesion
● no by-products
2, before curing physical properties
PartA Part B
Appearance (color) Transparent Transparent
Viscosity Pa•s 11。0 0。5
Density g / cm3 1.223 1.196
The mixing ratio (weight ratio) 1:1
Mixing Viscosity Pa•s 4.5
After 4 hours, Pa•s 4。5
After 24 hours, Pa•s 5.0
Operating time 12 hours
3, the standard hardening condition
Curing conditions 100 ℃ 2h + 150 ℃ 4h
4, the physical properties after curing
Shore Hardness Shore D 55
Refractive index 1。53
①A, B mass ratio of 1: 1 mixing evenly。
② vacuum degassing after dispensing to a desired portion of the heating cured, if the substrate contains water vapor, bubbles may occur upon curing, thus curing before heating and other operations to remove water before dispensing.
③ Curing conditions 100 ℃ 2h + 150 ℃ 4h.
④ cured if discovered after the bubble, please try curing conditions 60 ℃ 30min + 100 ℃ 2h + 150 ℃ 4h.
① Please keep away from fire, direct sunlight, and keep ventilation cold dark sealed and stored.
② using the front substrate surface should be clean and dry. Rough surfaces easier adhesion values.
③ acids, alkalis and certain organometallic compounds adversely affect the properties and storage stability of the material after curing, and may cause problems to generate hydrogen gas。 When mixing additives or pigments, etc。, should advance experiments confirm that the impact of its additive produced before use
④ use thermostat heat curing, use of replacement-type hot air circulation thermostat, and strengthen internal note imitation Air explosion.
⑤ non-standard values. In order to improve product performance, operability, etc., the information content may be changed.
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