Polyurethane Sealants

Product Description Item Unit index requirements applicable time Min ≥20 dry time h ≤12 Drying time h 48-72 Density g / cm3 1.3 ± 0.2 Shore A hardness of 30-50 MPa ≥2 Tensile strength Elongation at break% ≥250 heat resistance 80 ℃ 2h without flowing water impermeability 0.3MPa, 30min impervious wet base surface bond strength Mpa ≥0.5 temperature flexibility (-40 ℃, 2h) ℃ no crack solid content% ≥98 Note: The construction should be ensure the construction surface clean and free of debris, construction surface dry, prohibit construction when wet and soaked.