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KIND OF ELASTOMER

 

 

 

1.  Natural Rubber

 

2.  Synthetic Rubber

 

 

1)  Diene Monomer

*

  Butadiene Rubber (BR)

*

  Butadiene - Styrene Rubber (SBR)

*

  Butadiene - Acryronitrile Rubber (NBR)

*

  Isoprene Rubber (IR)

*

  Chloroprene Rubber (CR)

2)  Olefin Copolymer

*

  Isobutylene - Isoprene Copolymer (IR)

*

  Ethylene Propylene Copolymer (EP (D) M)

*

  Cholorosulfonated Polyethylene (CSM)

*

 Clorinated Ployethylene (CPE)

3)  Organic Silicon Monomer : Alkyl - Siloxan Terpolymer (Q : Silicon)

 

GENERAL DATA

 

 

 

1.  Cellular Structure : Closed Cell

 

2.  Color : Black, White, Grey, Green, Yellow, Red

 

3.  Water Absorption : 5% Max.

 

4.  Tempeature Range : +80¡­150°, -30°c

 

5.  Linear Shirinkage : 3% Max.

 

6. Standards : ASTM, JIS, KS

 

APPLICATION TO THE PHYSICAL PROPERTY

 

 

Excellent

Prety Good

Good

Poor

Bad

Remarks

WEATHERABILITY
RESISTANCE
OZONE RESISTANCE
OXIDATION RESISTANCE
SUNSHINE RESISTANCE

EPDM
CSM
CPE
EVA
 

CR



 

 

NR
SBR
BR
NBR
 

 

THE STATE OF RACKING ON THE SURFACES WHEN THEY ARE EXPOSED IN THE STATE OF NATURE SUCH AS OZONE, OXYGEN AND SUNSHINE.

HEAT AGING RESISTANCE

FLUORINE
SILIOON
EPDM

CR
IIR
CSM
CPE 

 

NR
SBR
BR
NBR

EVA

THE STATE OF DEFORMATION SOLIDIFICATION AND CRACKING AT HIGH TEMPERATURE OF 50¡­200°c

CHEMICAL RESISTANCE

CSM
CPE

CR
EVA

 

NR
SBR
BR
NBR

 

THE STATE OF DEFORMATION SOLIDIFICATION AND CRACKING WHEN THEY TOUCHED ACID, ALKALI AND OTHER CHEMICALS.

OIL RESISTANCE

NBR

CSM
CR
CPE

IIR

EPDM

 

EXTENT OF DEFORMATION WHEN THEY TOUCHED OIL AND SOLVENT

AIR FILTERING
IMPACT ABSORPTION
 

IIR

EDPM

CR
NR
 

 

 

SUITABILITY OF APPLICATION TO DEFLATION OF TUBE, BOAT OR VIBRATION RESISTANCE RUBBER

ABRASION RESISTANCE

NBR
BR
CSM
 

 NR
SBR
EPDM
CR

EVA

 

 

EXTENT & STATE OF WORNING OUT BY CONTINUOUS ABRASION LIKE TIRE

IMPACT RESISTANCE

NR
BR

SBR
CR
NBR


CSM
EPDM 

CPE

 EVA

 

EXTENT OF EXPANSION AND CONTRACTION LIKE RUBBER BALL.

ELONGATION

NR
CR
 

EPDM
SBR
 

CSM

CPE

EVA

EXTENT OF EXPANSION AND CONTRACTION LIKE RUBBER STRING

DISCOLORATION
 
 

SCM
EPDM
 

 

 

 

CR

EXTENT OF DISCOLORATION IN CASE OF EXPOSING
AGAINST SUNSHINE OR HEAT

 

PHYSICAL REQUIREMENTS OF CELLULAR RUBBERS, CLOSED - CELL SPONGE

 

Basic Requirements

Requirements Added
by Suffix Letters

Grade
Number

Compression Deflection,
25% Deflection
(Limits)
kg/cm2
 

Oil-aged 22h at
70°c (158°F),
Change in Volume
in ASTM Oil
No.3  (Limits),
% -25¡­+10

Oven-Aged 7Days at 70°c
(158°F),Change from Original Compression Deflection Values(Limits),
% ±20

Compression Set,
22h at Room temp (158°F) 50% Deflection, max, %

Suffix B1

Suffix F1

Compression Set,
22h at 70°c
(158° F) ,50% Deflection, max,%

Low Temperature Test at -40°c
(-40°F), Change from Original Deflection Values,
max %

HYPRENE HD0505

0.15¡­0.220

30¡­35

10±2

40¡­50

-

-

0610

0.20¡­0.25

25¡­30

10±2

30¡­36

-

-

TECHPRENE 1015

0.35¡­0.40

7¡­10

7±2

20¡­25

-

-

1520

0.40¡­0.45

7¡­10

7±2

17¡­20

-

-

2020

0.70¡­0.80

3¡­5

7±2

15¡­20

-

-

VO

0.45¡­0.50

7¡­10

7±2

17¡­20

-

-

EPDM 2020

0.55¡­0.60

45±5

3±2

75¡­80

-

-

1015

0.35¡­0.40

50±5

3±2

75¡­80

-

-

CR 120

0.30¡­0.35

35±5

8±2

65¡­75

-

-

NR 3010

1.10¡­1.20

25±30

60±5

45¡­55

-

-

 

DIMENSIONS

 

ITEM

Density(g/§²)

Hardness
(C-Type)

Conpression
Deflection(25%)(g/§²)

HYPRENE - HD0505

50

5

140~300

HYPRENE - OBE0610

60

10

300~350

HYPRENE - OB0610

60

10

300~350

EPDM - NB1520

150

20

350~600

EPDM - B2020

200

20

600~750

TECHPRENE - B1520

150

20

500~700

TECHPRENE - 2020

200

20

700~900

TECHPRENE - B2020(Vo)

200

20

700~900

SBR - 1535

150

35

1200~1300

NR - 1030

100

30

1200~1300

CR - 2020

200

20

600~900

EVA - 1550

150

50

1500~1800

EVA - 1035

100

35

1300~1500