Elastomer SBS/SIS
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Elastic Body SBS-Introduction
SBS is a thermoplastic elastomer made with two monomers, which are styrene and butadiene, and shows the properties of plastic and rubber at the same time. Due to these properties, it is widely used in a variety of areas including plastic modifying agent, asphalt modifying agent and adhesives.
SpecificationsItem Unit Test method Specification SD3591 SD3611 SD3602 SD3596 Structure --- --- Linear Radial Radial Linear Appearance --- --- Puffy particle Puffy particle Puffy particle Puffy particle Hardness Shore A GB/T531.1-2008 ≥70 ≥80 ≥90 ≥87 Volatile Matter % GB/T24131-2009 ≤0.5 ≤0.5 ≤0.5 ≤0.5 BD/SM Ratio % GB/T3682-2000 70/30 69/31 60/40 60/40 Specific Gravity g/cm3 --- 0.94 0.94 0.94 0.94 Toluene Solution Viscosity mPa.s 25℃,20wt% GB/T528-2009 ≥1900 ≥1100 ≥1100 ≥250 Ash Content % GB/T4498.1-2013 ≤0.20 ≤0.20 ≤0.20 ≤0.20 Elastic Body SIS-Introduction
SIS is a class of styrene-isoprene-styrene triblock copolymers produced via proprietary sequential anionic polymerization. Most SIS products are of linear structure, with different amount of diblocks. It usually appears as porous particles with outstanding melt processability and thermal stability. SIS is mainly used in hot melt pressure sensitive adhesives, sealants and polymer modification.
SpecificationsGrade Unit 1100 1120 1170 1220 1250 1250L 1300 Structure Linear Linear Linear Linear Linear Linear Linear Styrene Content wt. % 15 14 15 25 16 16 30 Diblock Content wt. % 0 25 66.5 25 50 50 0 Melting Flow Rate g/10 min 10 11 6 25 12 12 12 Volatiles wt. % 0.4 0.4 0.4 0.4 0.4 0.4 0.4 Ash wt. % 0.1 0.1 0.1 0.1 0.1 0.1 0.1 Viscosity mPa·s 1000 720 800 260 700 900 280 Tensile Strength MPa 18 16 3 10 6 6 22 Elongation at Break % 1050 1050 1300 1050 1300 1100 900 Applications Labels & Tapes √ √ √ √ √ √ Medical & Hygienic Items √ √ √ √ Plastic Modification √ √ √
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