Neoprene

Neoprene Profile
Description
Neoprene or Poly-Chloroprene is a family of synthetic rubbers that are produced by polymerization of chloroprene. Neoprene in general has good chemical stability, and maintains flexibility over a wide temperature range.

Features Benefits and Applications
Its wide range of products are extruded as well as molded products e.g automotive seals, laptop sleeves, orthopedic braces (wrist, knee, etc.), applied elastomeric membranes or flashings and electrical insulation, liquid and sheet applied elastomeric membranes or flashings, and car fan belts. A foamed neoprene containing gas cells is used as an insulation material, most notably in wetsuits. Foamed neoprene is also used in other insulation and shock-protection (packing) applications.

Quality and Standards
IRC produces various extruded and moulded neoprene rubber products for automotive and industrial applications following various international test standards e.g. ASTM D-412 and BS 5400 Standards. It has a good weathering resistance, flame retarding and moderate resistance to petroleum based fluids. It is also resistance to Ozone, Chemicals, acids, Oils, fats, greases and solvents.

General Physical Properties- Bearing Pad: ASTM Standard
Properties Specifications Test Method
Hardness (Shore A) 50 ± 5 ASTM D-2240
Tensile Strength (Mpa) 17.0 Min ASTM D-412
Elongation Break % 350 Min ASTM D-412
Heat Ageing, 70 hrs @ 100° C
Change in Hardness, points
Change in Tensile Strength, %
Change in Elongation,%
 
0 to +15
-/+ 15 Max
40 Max
ASTM-D-573
ASTM D-2240
ASTM D-412
ASTM D-412
Compression Set - 22 Hours at 70° C 25% Max ASTM D-395
Ozone Resistance 20% Stretch 40° C 100 PPHM 100 Hrs No visible cracks ASTM D-1149
Tear test (Pounds/Lin .in minimum) 45 kg/cm ASTM D-624
General Physical Properties – Bearing Pad: BS Standard
Properties Specifications Test Method
Hardness (Shore A) 60 ± 5 BS903, Part A26
Tensile Strength (Mpa) 15.5 Min BS903, Part-A2
Elongation Break % 350 Min BS903, Part-A2
Heat Ageing, 70 hrs @ 100° C
Change in Hardness, points
Change in Tensile Strength, %
Change in Elongation,%
 
+ 15 Max
+ 15 Max
+ 40 Max
BS903 Part A19
BS903, Part A26
BS903, Part-A2
BS903, Part-A2
Compression Set - 22 Hours at 100° C 35% Max BS903, Part-A6
Ozone Resistance 20% Stretch 30° C 25 PPHM 96 Hrs No visible cracks BS903, Part-A43
Low Temperature Crystallization
Compression Set; 10 days @ -10°C, %
Compression Ser, 3 days @ -25°C, %
 
65 Max
65 Max
BS903 Part A39
Properties Specifications Test Method
Hardness (Shore A) 70 ± 5 BS903, Part A26
Tensile Strength (Mpa) 10.5 Min BS 903, Part-A2
Elongation Break % 350 Min BS 903, Part-A2
Tensile Change % 15 Max BS 903, Part A2
Elongation Change % 40 Max BS 903 Part A2
Compression Set - 22 Hours at 100° C 25% Max BS 903, Part-A6
Low Temperature Flexibility Should be flexible at -40°C  
Maximum Working Temperature 125°C  
Fire Resistance Excellent  
Oil Resistance Good