防水的涂层

ItemRequirementsSolid content, % ≥96Gel time, s ≤45Surface drying time, s ≤120Tensile strength, MPa ≥10.0Elongation at break, % ≥300Tear strength, N/mm ≥40Fold ability at low temperature, ≤-35Water tightness, 0.4MPa×2hPassThermal tensile ratio, %Elongation ≤1.0Shrinkage ≤1.0Water absorptivity, % ≤5.0Bonding strength on dry substrate, MPa2.0Hardness, Shore A ≥70Resistance to impact/kg·m0.6Wear resistance, (750g/500r)/mg ≤40Aging at modulusHeat agingNo cracking and deformationArtificial weatheringNo cracking and deformationThermal treatmentTensile strength retention rate,% 80-150Elongation at break, % ≥250Fold ability at low temperature, ≤-30Alkali treatmentTensile strength retention rate,% 80-150Elongation at break, % ≥250Fold ability at low temperature, ≤-30Acid treatmentTensile strength retention rate,% 80-150Elongation at break, % ≥250Fold ability at low temperature, ≤-30Salt treatmentTensile strength retention rate,% 80-150Elongation at break, % ≥250Fold ability at low temperature, ≤-30Oil treatmentTensile strength retention rate,% 80-150UV aging, 1500 hTensile strength retention rate,% 80-150Elongation at break, % ≥125Fold ability at low temperature, ≤-25Artificial weathering, 1512hTensile strength retention rate,% 80-150Elongation at break, % ≥250Fold ability at low temperature, ≤-30