Sealant or sealing strip used for color steel plate and color steel plate, color steel plate and other materials shall meet the following requirements:
1. The selected sealing material should be neutral and have no corrosive effect on steel plate and color coating
2. It is necessary to test the bonding performance before construction to ensure the bonding performance between the sealing material and the color steel plate.
3. Carry out compatibility test to avoid failure of sealing material and loss of bonding performance
4. There should be clear temperature regulation for construction operation in the construction process. Generally, it should have good extrusion performance and thixotropy at 5-40 ℃
5. the sealing material used also has good aging resistance, UV resistance, odor resistance and water resistance.
6. After curing, the material should have good ductility at low temperature, no softening and degradation at high temperature, and keep good elasticity.
7. The purchased sealing materials must have factory certificate, operation process regulations and product technical performance data.
