Styrene-Butadiene Copolymer (SBC)

SUNION K-resin is a linear or star polymer transparent impact resin with block structure and containing graded structure, produced by production process using anion polymerization. It has characteristics of high transparent, high gloss, impact resistance, easy coloring and printing, and apply to these areas of sheet materials, refrigerator manufacturing, shoemaking, toy manufacturing, food containers and packaging, medical devices, electrical instrument panels and other materials. Performance table of SUNION K-resin products Items Test method Test condition 8300 SL803G SL805 SL838 Appearance By visual Colorless, transparent Colorless, transparent Colorless, transparent Colorless, transparent Structure Linear Linear Linear Linear Styrene/Butadiene 85/15 % 75/25 % 75/25 % 70/30 % Density GB/T1033 23℃ 1.01-1.03g/cm3 1.01-1.03g/cm3 1.01-1.03g/cm3 1.01-1.03g/cm3 Melt flow rate GB/T3682 5kg-200℃ 10±2.00g/10min 8.0±2.0g/10min 12.9g/10min 8.0±2.0g/10min Hardness (Shore D) GB/T2411 Shore D 74.0±3.0 71.0±3.0 68.0 66.0±2.0 Tensile Strength GB/T1040 50mm/min ≥35.0 Mpa ≥23.5 Mpa 27.3 Mpa ≥15.5 Mpa Elongation GB/T1040 50mm/min ≥35% ≥150% 350% ≥180% Bending strength GB/T9341 2mm/min ≥55 Mpa ≥34 Mpa 34.3 Mpa ≥18 Mpa Bending modulus GB/T9341 2mm/min ≥1800 Mpa ≥1350 Mpa 1416 Mpa ≥9000 Mpa IZOD impact strength GB/T1843 Notched 23℃ ≥3.8 KJ/m2 ≥3.5 KJ/m2 4.2 KJ/m2 ≥4.5 KJ/m2 Vicat softening point GB/T1633 10N, 50℃/h ≥85℃ ≥80℃ 81.7℃ ≥70℃ Distortion temperature GB/T1634.1 0.46 Mpa 120℃/h ≥75℃ ≥70℃ 72.9℃ ≥65℃ Transmittance GB/T2410 2mm ≥90% ≥90% 91.7% ≥89% Haze GB/T2410 2mm ≤5.0% ≤4.0% 1.3% ≤4.0%