Songhan Plastic Technology Co.,Ltd.
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Natural Rubber, Not 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, Not 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 0.930 g/cc
0.0336 lb/in³
Uncompounded
Mechanical Properties Metric English Comments
Hardness, Shore A 30 - 90
30 - 90
Depends on compounding
Tensile Strength, Ultimate >= 27.6 MPa
>= 4000 psi
Reinforced
Elongation at Break 500 %
500 %
Reinforced
Thermal Properties Metric English Comments
CTE, linear 666 µm/m-°C

@Temperature 20.0 °C
370 µin/in-°F

@Temperature 68.0 °F
Specific Heat Capacity 0.450 J/g-°C
0.108 BTU/lb-°F
Thermal Conductivity 0.140 W/m-K
0.972 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air 50.0 °C
122 °F
Minimum Service Temperature, Air -50.0 °C
-58.0 °F
Glass Transition Temp, Tg -70.0 °C
-94.0 °F
Optical Properties Metric English Comments
Refractive Index 1.519
1.519
Electrical Properties Metric English Comments
Electrical Resistivity 1.00e+15 ohm-cm
1.00e+15 ohm-cm
Dielectric Constant 2.6

@Frequency 1000 Hz
2.6

@Frequency 1000 Hz
Dielectric Strength 17.0 kV/mm
432 kV/in
Dissipation Factor 0.0020

@Frequency 1000 Hz
0.0020

@Frequency 1000 Hz
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