Polyethylene polypropylene (di) nylon waterproofin

project FS2 1Fracture tensile strength N/cm normal temperature ≥ 60 60°c ≥30 2Tore elongationpercentage normal temperature ≥400 -20°c ≥ 10 3 Tear strengthN≥ 20 4 waterproof, 30min no leakage0.3Mpa 5 Low-temperature bending°c ≤ -20 6 Heat expansion amount mm extensions < 2 contraction < 4 7 Hot air aging(80°c×168h) Fracture tensile retention (percentage)≥80 Keep rate cut elongation glue (percentage) ≥70 8 alkaline Fracture tensile retention (percentage)≥ 80 Keep rate cut elongation glue (percentage) ≥ 80 9 ozone no crack 10 artificial aging Fracture tensile retention (percentage) ≥ 80 Keep rate cut elongation glue (percentage) ≥ 70 NOTE:When the overall thickness is less than 1.0 mm, pull not less than 50%, other elongation reached more than 80 percent of the specified performance.