Halogen Free Flame Retardant Heat Shrinkable Tube 
 Is environmentally friendly halogen-free flame-retardant heat shrinkable tube with excellent flame-retardant, insulation performance, very soft and flexible, low shrink temperature, shrink fast, widely used in cable connections, cable ends processing, solder joint protection, line Beam logo, the insulation resistance and capacitance, metal rod or pipe anti-corrosion protection of the antenna. ? Shrink the role of theory in high-energy rays, the linear polymer to form three-dimensional crosslinked network. Crosslinked polymers in mechanical strength, heat resistance, chemical solvents, anti-aging and so on a greatly improved, especially in acid and alkali can be greatly improved. ? Temperature range -55 ℃ ~ 125 ℃;? Initial shrinkage temperature of 80 ℃, fully shrink temperature 120 ℃;? Radial shrinkage ratio of 2:1, the longitudinal shrinkage of ≤ 8%;? Use an oven and the hot air gun heating to shrink;? Color black, red, yellow, green, blue, white, and produce other colors according to customer requirements. ? Implementation of standards UL224 VW-1 C-UL CSA C 22.2 OFT? Physical and chemical properties 
 Performance of typical performance test methods 
 Physical properties Tensile strength (MPa) GB/T1040 ≥ 10.4 14.8 
 Elongation (%) GB/T1040 ≥ 200 460 
 Tensile strength after thermal aging (MPa) UL 224 158 ℃ × 168hr ≥ 7.3 14.5 
 Elongation after heat aging (%) UL 224 158 ℃ × 168hr ≥ 100 480 
 Heat shock UL 224 250 ℃ × 4hr not sticky without cracking PASS 
 Electrical characteristics of resistance to cold bending UL 224 -30 ℃ × 4hr not crack PASS 
 Breakdown Strength (Kv / mm) GB/1408 ≥ 15 17 
 Voltage 600V UL 224 2500V No breakdown PASS 
 Volume resistivity (Ω.m) GB/1410 ≥ 1 × 1016 1 × 1017 
 Chemical characteristics of corrosion resistance UL 224 158 ℃ × 168hr PASS 
 Copper stability UL 224 158 ℃ × 168hr PASS 
 Flammability UL 224 VW-1 PASS