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caulk
This product is a two-component (A:B) polyurethane caulking material. The two components, A and B, are mixed and cured. It has the characteristics of high elongation and good elasticity. It is currently a cost-effective waterproof resin caulking material.
【Scope of application】
Expansion joints of highway (rail) road bridges, roads, box culverts, airport runways, concrete construction joints, railway track bed expansion joints, etc.
【Features】
Convenient construction, high solid content, high elongation, high water resistance, outstanding fatigue resistance, stress resistance and aging resistance. The service life is much higher than that of asphalt-based caulking adhesives. The bonding strength is high, and there will be no phenomena such as high-temperature flow and extrusion, hardening and cracking in winter, etc., and it will maintain the elastic state all the year round, effectively bonding and waterproofing.
【Performance】
The performance indicators of the mixture of components A and B of the resin caulking material should meet the following requirements
| Serial Number | Project | Unit | Performance |
| 1 | Viscosity | Pa·s | ≤10 |
| 2 | Working Hours | min | ≥30 |
| 3 | Surface Dry Time | h | ≤12 |
| 4 | Hard Work Time | h | ≤24 |
| 5 | Cure Shrinkage | mm | ≤10 |
| 6 | Solid Content | % | ≥99 |
| 7 | Appearance Quality | / | There Are No Obvious Impurities, Bubbles, Wrinkles and Cracks on the Surface |
| 8 | Hardness（LX—A） | Degrees | 25±5 |
| 9 | Apparent Density | g/cm3 | ≤1.25 |
| 10 | Modulus of Elasticity | kN/mm | 1.5±0.5 |
| 11 | Tensile Strength | MPa | ≥2.0 |
| 12 | Elongation at Break | % | ≥800 |
| 13 | Bond Strength | MPa | ≥1.5 |
| 14 | Fatigue Performance | / | Compression Deformation ≤ 1.2mm, Change Rate of Elastic Coefficient Within ± 20%, No Obvious Abnormality in Appearance |
| 15 | Heat Resistance | 80℃, 2h No Flow | |
| 16 | Low Temperature Flexibility | ℃ | -40℃, 2h (Around φ25mm Round Rod) No Cracks |
| 17 | Tensile Adhesion | 60%, 24h Without Damage |
【Storage】
It Should Be Stored in a Ventilated, Dry and Cool Place, Avoiding Direct Sunlight; the Storage Period Is 12 Months.
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