SUZUHIRO CHEMICAL
  1. HOME
  2. PRODUCT
  3. Expandable Graphite GREP-EG

PRODUCT

Expandable Graphite GREP-EG

DATA PDF

COMPOSITION

Special treated expandable graphite controlled expansion until 230°C
 

ADVANTAGES

  • High efficiency non-halogen flame retardant for several resins.
  • High flame retardancy is achieved with lower loading level.
  • Minimize deterioration of physical properties.
  • Minimize smoke emission during burning.

 

PROPERTIES

Appearance
Moisture
Expansion ratio   
pH
Particle Size
 		 Black Powder
≤ 0.3%
180 ~ 230cc/g (1,000°C)
6.0 ~ 9.0
300 ~ 400 μm

Particle size distribution

+24 mesh 0.5%
+32 mesh 3.0%
+48 mesh 63.5%
+60 mesh 13.0%
+80 mesh 10.0%
-80 mesh 10.0%

 

STATE OF EXPANSION


Not-Expand and Expanded


Expanding of GREP-EG (Movie)

 

APPLICATION

Thermoplastics
 

PACKAGE

20kg net paper bag
 

ATTENTION

  • Knead at milder condition to prevent collapse of particle.
    Once collapsed, deteriorate flame retardancy.
  • Perform powerful ventilation at vent of extruder.
  • Do not use mesh at head of extruder.

 

THERMOPLASTICS FORMULATION COMBINED WITH RED PHOSPHOROUS

  PP HIPS LDPE ABS
Resin 100 100 100 100 100 100 100 100 100 100
GREP-EG   8 10 10   8   10   10
Red-P (Powder)   4 5 5   4   5   5
Mg(OH)2       25            
Oxygen Index 19.0 26.0 27.0 31.5 18.5 29.5 18.5 28.0 18.5 30.5
UL94　3.0mm HB V0 V0 V0 HB V0 HB V0 HB V0
UL94　1.5mm HB V2 V0 V0 HB V0 HB V0 HB V0

 

THERMOPLASTICS FORMULATION COMBINED WITH AMMONIUMPOLYPHOSPHATE

( FCP-770 --> complex of surface treated ammonium polyphosphate and nitrogen flame retardant )

  PP HIPS LDPE ABS
Resin 100 100 100 100 100 100 100 100
GREP-EG 15 15 20 25 15 25 20 25
FCP-770 20 25 15 20 10 25 15 20
Oxygen Index 28.0 30.0 27.0 28.0 28.0 28.5 27.0 31.0
UL94    3.0mm V0 V0 V0 V0 V0 V0 V2 V0
UL94    1.5mm V2 V0 V2 V0 HB V0 V2 V0

 

EPDM FORMULATION

EPDM 342 342 342 342
Curing Agent 4.3 4.3 4.3 4.3
GREP-EG 25 33.3 16.7 40
Red-P (Powder) 25 16.7 33.3 10
UL94    1.0mm V0 V0 V0 V2

 

Back to Top