GOLOHO POLYMER (CHANGZHOU) CO.,LTD.
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Light Emitting Diode(LED)

What is LED?

LED is short for Lighting Emitting Diode which is semi-conductor lighting emitting unit. Solid semi-conductor chip as the luminescent material, it will emit light of red, yellow, blue and green directly through photon emission by the carrier in semi-conductor compound giving off exceed energy. LED could emit random color light by adding phosphor in this principle of tricolor on the basis. LED are used as light resource to make LED lights.
LED-Industry-Solutions-2

LED Industry

LED lights give us more colorful nights. In addition, it has many advantages such as  power saving, long life, high light, wide viewing and long visible distance.

GOLOHO—LED industry solutions

  • High/low Refractive Index LED encapsulant
  • Adhesive sealant
  • Thermal conductive silicone
  • Thermal conductive silicone grease
  • Thermal conductive encapsulant
LED-Industry-Solutions-3

Encapsulant

Property

4930C

4940C

4950C

4965C

A, Viscosity(mPa·s)

3000

3500

4200

5500±500

B, Viscosity(mPa·s)

4000

4000

4000

5500±500

Mix ratio

1:2

1:3

1:4

1:1

Mix viscosity(mPa·s)

3800

3900

4000

5500±1000

Working time

>8h

>8h

>8h

≥6h

Cure conditions

80℃1h

150℃3h

80℃1h

150℃3h

80℃1h

150℃3h

100℃1h

150℃3h

Diopter

1.534

1.534

1.534

1.41

durometer

35D

45D

55D

65A±5

Light transmittance

98%

98%

98%

95%


sealant

Property

Unit

2391

2491

2496

2492

7191

Color


W/B/G

W/B/G

W/B/G

W/B/G

colorless

B

Appearance


Paste

Paste

Paste

Paste

Flowable

Specific gravity

g/cm3

1.46

1.40

1.38

0.99

1.4

Tack-free time

min

5~10

5~10

9~20

2~5

15~30

Hardness

JIS A

42

44

45

30

30

Tensile strength

Mpa

2.0

2.0

2.3

21.5

1.2

Elongation at break

%

≥250

≥200

≥300

≥400

≥200

Shear strength

Mpa

1.8

1.8

2.2

1.0

1.5

Volume resistance

Ω·cm

≥0.5E+15

≥1.0E+15

≥0.5E+15

≥1.0E+15

≥0.5E+15

Notes

Cure condition: 25℃, RH75%; 7191 is a two-component adhesive, the entire cure time is 2h


Thermal Conductive Encapsulant

Property

Unit

313

4302

4302-4

7002C

Type


Si condensation

Si addition

Si addition

Si condensation

Color


B/W/G

B/W/G

B/W/G

colorless

Mix ratio

By weight

6:1

1:1

1:1

10:1

Viscosity

mPa·s

3000±500

4000±500

4000±500

1500±500

Specific gravity

g/cm3

1.6±0.1

1.6±0.1

1.8±0.1

1.0±0.1

Working time

min

30~40

30~60

30~60

25~35

Curing time

h

3

4

4

1

Hardness

JIS A

50±5

50±5

50±5

20±5

Thermal conductivity

W/m·k

0.8

0.6~0.8

1.0

0.2

Volume resistance

Ω·cm

>1E+15

>1E+14

>1E+14

>0.5*1015

Flame class

UL

HB

V-0

V-0

HB


Thermal Conductive Silicone

Property

unit

2741

2742

2743

4326

Color


White

White

White

Grey

Appearance


Paste

Paste

Flowable

Half-paste

Specific gravity

g/cm3

2.5

2.7

2.9

2.7

Tack-free time

min

2~6

2~5

5~20


Entirety cure time

h

24(2mm)

24(2mm)

24(2mm)

150℃8min

Hardness

JIS A

65

70

93

45

Thermal conductivity

W/m·k

1.2

2.0

3.0

1.8

Volume resistance

Ω·cm

1.0*1015

1.0*1015

7.4*1014

0.5*1015

Shear strength

Mpa

>2.0

>2.0

>1.5

4.5~4.7

Flame resistance

UL94

V-0

V-0

V-0

V-0

Notes

4326, one-part conditional thermal conductive adhesive, rapid cure


Company Profile
  • GOLOHO POLYMER was established in 1995 which is the leading conglomerate in China specialized in industrial adhesive R&D and production. Our main products are organic silicone adhesive, silicone resin, epoxy resin and PU.
  • It has the leading technology platform and production process after more than twenty years' of development and technology accumulation. We execute critical quality management system.
  • There are factories and technical center in Shenzhen and Changzhou, Jiangsu. It has been accepted by serious premium brand customers.
  • GOLOHO POLYMER provides global customers the overall solutions with safe, reliable, innovative high-tech products and high-end service.