SKI-5PM cis-isoprene synthetic rubber is cis-1.4-polyisoprene produced by polymerization of isoprene in solution using stereospecific catalyst based on neodymium compounds. The rubber is stabilized by mixture of two non-staining antioxidants.
Content of cis-1,4-units, min: 98 %.
CAS: # 9003-31-0
Application: widely used for production of rubbers used in food and medical industries, in manufacture of individual protection means for respiratory tract (gas masks), color rubber products and other industrial purposes. Rubber should not contain any foreign impurities and must meet the following requirements
Appearance: briquettes (bales)
Weight: 30.0+/-1.0 kg
Colour: from white to light-milky
Specific gravity: 0.91-0.92 g/cm3
* – specified in the certificate of quality.
** – non-rejectable.
Preparation of rubber mixes is carried out in accordance with ASTM D 3403-07, mixing – according to С method (on the roll mills). Roll mills are prepared according to ASTM D 3182-07. Vulcanization characteristics are determined according to ASTM D 5289 using an MDR 2000 rheometer (flow meter).
Wait time for rubber mix before testing is 2-6 hours.
Rubber mix recipe and measurement conditions: