倍韧/BESTPERNE® ZF55B 热塑性弹性体Thermoplastic Elastomer 产品说明Product description 一款高性能吸震材料，具有特别舒适的手感。  high performance shock absorption material,with a special and comfortable feel. 关键特性Key characteristic 1.表面微亮，手感细腻柔软爽滑.   A little bright on the surface，exquisite，smooth and soft touch feeling. 2.阻尼效果优异.    Damping effect is good. 功能Function 产品应用 Main application 手机保护套Phone protective cover 密封垫片Sealing gasket 电子器件粘胶配件Electronic plastic accessories 加工方法Processing method 注塑、挤出成型Injection and extrusion molding 环保认证 Environmental certification ROHS REACH EN71-3 PAHS ASTM-F963 Phthalate 颜色Color 本色Natural 气味Smell 少许树脂味A little resin smell 外型Appearance 圆球形小颗粒Cylindrical particle，about 3mm×1.5mm 储藏期Storage period 常温下通风干燥，24个月Ventilated dry at normal temperature，about 24 months 包装方式Packaging method 25公斤/袋 25kg/bag 物理性能Physical properties 结果Result 单位Unit 方法Method 成型条件Molding condition 比重Specific gravity 1.02±0.02 g/cm3 ASTM D792 干燥温度Drying temp     60 ℃ 硬度Hardness 55±5 shoreA ASTM D2240 干燥时间Drying time      2h 拉伸强度Tensile strength >4 Mpa ASTM D412 射嘴温度Nozzle temp     200℃ 断裂延伸Elongation at break >300 % ASTM D412 螺筒一段温度Screw 1 temp 190℃ 撕裂强度Tearing strength >22 Kn/m ASTM D624 螺筒二段温度Screw 2 temp 180℃ 熔融指数Melt index >3 g/10min ASTM D1238 螺筒三段温度Screw 3 temp 170℃ 压缩永久变形（高温）Compression set (high temperature) 103   % ISO 815 70℃/24h，压缩量为25% 压缩永久变形（常温）Compression set (normal temperature) 57    % ISO 815 23℃/72h，压缩量为25% 脆化温度Embrittlement temperature -30 ℃ ISO 812