Sales: WL-800A/800B light-emitting diode (LED) epoxy glue

I. Brief Introduction: ( www.wlepoxy.com )

  WL-800A/B epoxy resin is recently developed for encapsulating optical semi-conductor device such as LED. With good transparency, better processing characteristics and outstanding electric, physical properties, it is an ideal material for transparent tubes. Following are its special features:

1.       Low viscosity and good degassing property.

2.       Wide reaction temperature range (110-150), suitable for many encapsulating process.

3.       Smooth reaction in early stage, low thermal shrinkage stress and high reliability of encapsulated products.

4.       Good transparency after curing.

Light-emitting diode (LED)

.Product data

Item

Test method or condition

WL-800A

WL-800B

Appearance

Visual inspection

Light purple transparent liquid

Colorless

transparent liquid

Density

25 g/cm3

1.1-1.2

1.15-1.20

Viscosity

40 cPs

800-1300

30-60

Shelf life

Room temperature, ventilation

Half a year

Half a year

. Working condition

Item

Unit or condition

WL-800A/B

Mixing proportion

In weight

100:100

Application time period

40,35g,h

>3.5

Curing condition

/h

Mould releasing:110-150/60-20min;

Recommend:130/35min.

Aging:100-120/6-8h.

1.       Recommended quantity (in weight) of diffusing agent and color paste to be used with WL-800A/B:

PC-002           2-5%

PC-003           1-3%

PC-004           2-4%

Diffusing agent     2-5%

2.       Before use, material A is to be pre-warmed to 40-50, then add material B in proportion and mix them thoroughly.

3.       The mixture (A+B)is to be vacuum degassed at 3 torr and 40. When the liquid level sinks for 10-15 minutes stop degassing.

4.       the encapsulated parts should be pre-heated at 70-90 for 1 hour to remove moisture.

5.       If possible encapsulation parts should be carried out in vacuum.

.Applications

   Used in encapsulating of transparent LED and other optical semi-conductor device..

.Characteristics after curing

Items

Unit or condition

WL-800A/B

Hardness

Shore-D

>88

Volume resistivity

25,Ω·cm

>1015

Surface resistance

25,Ω

>1014

Insulation strength

25,KV/mm

>23

Linear expansion coefficient

cm/cm/

<6.0×10-5

Water absorption

100/1h,%

<0.35

Tg value

>130

.Storage, transportation and points to note

1.       This product does not belong to dangerous article. It can be stored and transported in the way as common chemicals do. The shelf life is designated in the container.

2.        Material B is liable to absorb moisture, the lid of the container must be tightly covered after use.

.Packing

   Packed in 6-kg plastic container. Company symbol at the side of container.

 Ú Note: The data above are typical tested at a relative humidity of 70 % and a temperature of 25. They are just for customers’ reference. We cannot wholly guarantee all the listed data will be reached under specific test conditions. When applying the product, the customers should use data obtained through their own testing.

 

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