Songhan Plastic Technology Co.,Ltd.
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Natural Rubber, Vulcanized (NR, IR, Polyisoprene)

Category Polymer , Thermoset , Rubber or Thermoset Elastomer (TSE)
Manufacturer
Trade Name
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Natural Rubber, Vulcanized (NR, IR, Polyisoprene).pdf
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Material Notes:
Natural rubber is polyisoprene. Chemical and environmental resistance and mechanical properties are improved through crosslinking (vulcanizing), usually through treatment with sulfur.Natural rubber usually withstands polar organic solvents (alcohols, ketones, aldehydes), organic acids, and mild chemicals. Its is adversely affected by most hydrocarbons, oil/grease/fat, strong acid, and ozone.
Physical Properties Metric English Comments
Density 0.950 g/cc
0.0343 lb/in³
Uncompounded
Mechanical Properties Metric English Comments
Hardness, Shore A 30 - 100
30 - 100
Depends on compounding
Hardness, Shore D 30 - 45
30 - 45
Depends on compounding
Tensile Strength, Ultimate 28.0 MPa
4060 psi
Compounded Tire
Elongation at Break 100 - 800 %
100 - 800 %
100% Modulus 0.00150 GPa
0.218 ksi
Shear Modulus 0.000500 GPa
0.0725 ksi
Thermal Properties Metric English Comments
CTE, linear 225 µm/m-°C

@Temperature 20.0 °C
125 µin/in-°F

@Temperature 68.0 °F
Specific Heat Capacity 0.440 J/g-°C
0.105 BTU/lb-°F
Thermal Conductivity 0.150 W/m-K
1.04 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air 80.0 °C
176 °F
Minimum Service Temperature, Air -55.0 °C
-67.0 °F
Optical Properties Metric English Comments
Refractive Index 1.526
1.526
Electrical Properties Metric English Comments
Electrical Resistivity 1.00e+16 ohm-cm
1.00e+16 ohm-cm
Dielectric Constant 2.9

@Frequency 1000 Hz
2.9

@Frequency 1000 Hz
Dielectric Strength 50.0 kV/mm
1270 kV/in
Step by step
Dissipation Factor 0.0020

@Frequency 60.0 - 1000 Hz
0.0020

@Frequency 60.0 - 1000 Hz
0.030

@Frequency 1e+6 Hz
0.030

@Frequency 1e+6 Hz
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