Stobicast L781 PU灌封膠 一.產品概述: L781為一款雙組份PU灌封膠,產地德國.該產品具有良好抗冷熱沖擊性,機械性能,防水,絕緣,防腐蝕等性能.符合德國VDE安規標準,符合歐盟2002/95/EGROHS標準,廣泛應用于變壓器,電子開關,PCBA,LED燈具及各類高低壓電子元器件的灌封. 二.產品物理特性: 密度: 主劑A 固化劑B 混和密度 1.46 1.22 1.42 粘度: 3000 100 1200-1300 比例: 100 17 二.產品參數: Shore hardness A 90 / D 40 DIN EN ISO 868 Tensile strength 6 N/mm2 DIN 53455 Elongation at break 90 % Notched impact strength 14 kJ/m2 DIN 53453 Impact strength 37 kJ/m2 DIN 53453 Flammability (UL file E 302173) V 0 UL 94 (3 mm) Glow wire ignition temperature (GWIT) 850 °C / 3,0 IEC 60695-2-13 Glow wire flammability index (GWFI) 850 °C / 3,0 IEC 60695-2-12 Glass transition temperature 0°C DSC Insulation class B (130°C) IEC 85 Relative temperature index (RTI) 130 °C UL 746 B Water absorption 36 mg in 24 h 65 mg in 96 h DIN 53495 Heat conductivity 0,7 W/Km DIN 52612 Coefficient of linear expansion 122 · 10-6 K-1 DIN 53752 Dielectric strength 26 kV/mm IEC 243 Surface resistance 1014 W IEC 93 Volume resistance at 20 °C 1014 W cm IEC 93 Tracking resistance CTI>600 V IEC 112 Electrolytic corrosion A / 1.2 VDE 0307