Butyl Rubber (IIR)
Butyl rubber is composed by copolymerizing isobutylene which is with small amount of isoprene. It is like EPDM possessing excellent resistance to chemical and polar fluid, outstanding electrical insulation and good ozone resistance. The special properties of butyl rubber are low gas and moisture permeability and high shock absorption. These properties have made butyl rubber the polymer choice in a variety of applications.
Cure system
Standard IIRs are sulfur-cured.
Other Common Variations
- IIRs can be formulated with only “white list” ingredients as specified in 21.CFR 177.2600 for use in applications where the elastomer will be in contact with food or beverages, ex. bottle top seal for alcohol or medical.
Informasi Umum
Penetapan ASTM D 1418
IIR, CIIR, BIIR
Warna Standar
Black
Penetapan ISO/DIN 1629
IIR, CIIR, BIIR
Rentang Kekerasan
50-80 Shore A
Kode ASTM D2000 / SAE J 200
AA, BA
Biaya Relatif
Low
Suhu Layanan
Suhu Rendah Standar
-55°C / -67°F
Suhu Rendah Senyawa Khusus
Suhu Tinggi Standar
100°C / 212°F
Suhu Tinggi Senyawa Khusus
Berfungsi Baik Dalam...
- Alcohols
- Ketones
- Dilute acids and alkalis
- Silicone oils & greases
- Water and Steam
- Phosphate ester based hydraulic fluids - Skydrol®
- Ozone, aging & weathering
Tidak Berfungsi Baik Dalam...
- Aliphatic & aromatic hydrocarbons
- Halogenated solvents
- Petroleum based oils & greases