Two-Component Polyaspartic polyurea Waterproof Coating (Third-Generation) -for First Purchase

Description

• Solid content: 95 %
• Density: 1.28 g/cm³
• Surface dry time: 1 hour
• Full cure time: 8 hours
• Tensile strength: 19 MPa
• Elongation at break: 480 %
• Tear strength: 65 N/m
• Low-temperature flexibility: No cracks at –35 °C
• Water permeability: Impermeable under 0.3 MPa for 120 minutes
• Thermal stability (after heating): –2.3 % change
• Water absorption: 2.2 %
• Shore hardness (A): 92
• Abrasion resistance (750 g / 500 r): 1 mg loss
• Adhesion strength: ≥ 3.2 MPa (substrate failure)
• Adhesion peel strength (180 °C): 3.6 MPa
• Water resistance (23 °C, 14 days): No cracks, no delamination, no bubbles, substrate failure

After heat aging (80 °C, 14 days):
• Tensile strength retention: 97 %
• Elongation retention: 460 %
• Low-temperature flexibility: No cracks at –30 °C

After acid exposure (2 % H₂SO₄ solution, 7 days):
• Tensile strength retention: 97 %
• Elongation retention: 455 %
• Low-temperature flexibility: No cracks at –30 °C

After alkali exposure (0.1 % NaOH + saturated Ca(OH)₂ solution, 7 days):
• Tensile strength retention: 105 %
• Elongation retention: 470 %
• Low-temperature flexibility: No cracks at –30 °C

After salt exposure (3 % NaCl solution, 7 days):
• Tensile strength retention: 100 %
• Elongation retention: 465 %
• Low-temperature flexibility: No cracks at –30 °C

After accelerated weathering (5040 kJ/m² cumulative radiation at 340 nm):
• Appearance: No cracks
• Tensile strength retention: 102 %
• Elongation at break: 325 %
• Low-temperature flexibility: No cracks at –30 °C