Natural Rubber (NR)
Natural rubber is produced from the latex of the Hevea brasiliensis,and the chemical name of this polymer is polyisoprene. Polyisoprene also can be synthesized by polymerization from its monomer isoprene. Natural rubber possesses many excellent physical properties including high resilience and strength and good abrasion resistance. The defects are like SBR, having poor resistance to hydrocarbon oil and not suitable in UV, oxygen, ozone because of the double bond in the polymer backbone. But its poor weathering resistance can be modified by special additive.
Cure system
Standard NR compounds are sulfur-cured.
Other Common Variations
- NR is usually mixed with SBR and BR and applied in tire productions.
Informasi Umum
Penetapan ASTM D 1418
NR
Warna Standar
Black
Penetapan ISO/DIN 1629
NR
Rentang Kekerasan
40-90 Shore A
Kode ASTM D2000 / SAE J 200
AA
Biaya Relatif
Low
Suhu Layanan
Suhu Rendah Standar
-50°C / -58°F
Suhu Rendah Senyawa Khusus
Suhu Tinggi Standar
70°C / 158°F
Suhu Tinggi Senyawa Khusus
Berfungsi Baik Dalam...
- Alcohols
- Organic acids
Tidak Berfungsi Baik Dalam...
- Ozone
- Petroleum oils
- Aromatic, aliphatic, or halogenated hydrocarbons