Tunnel fire retardant coating
描述
Tunnel fire retardant coating
Product introduction:
As a special coating, tunnel fire retardant coating should not only have the decorative function of ordinary coatings and provide physical protection for the cable substrate, but also need to have special functions of flame retardant and fire resistance.
Physical parameters :
Technical Specifications All tests (except drying time) are performed after 7 days of curing (25°C) | ||
Pilot projects | unit | index |
drying schedule dry | h | ≤2 |
Bond strength | MPa | ≤0.15 |
dry density | Kg/㎡ | ≤650 |
water resistance | h | No cracking, no layering, no falling off for 720 hours |
Freeze-thaw cycle resistance test | Second-rate | 15 times |
Fire resistance coating thickness 10mm | h | ≥1.5 |
Coating thickness 18mm | h | ≥2.0 |
Coating thickness 23mm | h | ≥2.5 |
Coating thickness 27mm | h | ≥3.0 |
Coating thickness 30mm | h | ≥3.5 |
Application areas:
It is mainly suitable for the fire protection of highway tunnels and railway tunnels, and is also suitable for the fire protection needs of petrochemical projects, high-rise buildings, steel structures, and underground garages.
Main features:
Tunnel fire retardant coating does not contain asbestos and harmful substances, and the coating after production, use and construction has no pungent smell. It does not release toxic gases during a fire, and the smoke toxicity reaches AQ-1 level, which meets the requirements of environmental protection. The coating is light, firmly bonded, high in strength, and has excellent aging resistance and waterproof properties.
Construction method:
1. The construction of tunnel fire retardant coatings generally adopts a layered interval construction process, which is divided into base layer (fire retardant layer) and surface layer (color layer). During construction and within 24 hours after construction, the ambient temperature shall not be lower than 4°C to prevent freezing damage. Under extremely dry and hot conditions, necessary maintenance conditions should be created to prevent the coating from losing water too quickly.
2. Construction equipment: mortar mixer, special spraying equipment (squeeze mortar pump, air compressor), special iron plate for applying mortar, cleaning tools, transportation tools, etc.
3. It is prepared by the factory, packaged in one component, and mixed at the construction site for easy operation.
4. Direct spraying and troweling construction, fast drying and solidification.
Packaging and storage:
Pack and store in accordance with national regulations. The storage environment should be dry, cool, well ventilated, avoid high temperatures, and keep away from fire sources. Packaging containers must be kept tightly closed. The effective storage period is 6 months.
Packaging specifications: 25kg
Precautions:
During the construction process and before the coating is dried and solidified, the ambient temperature should be maintained at 5-45°C, the relative humidity should not be greater than 85%, and the air should be circulated. Construction should not be carried out when there is condensation on the surface of the component. During the construction process, the thickness of the coating should be measured at any time according to the fire resistance limit. The paint should be used up within the same day after opening. If it is not used cleanly, it must be sealed and stored intact.
Paint film performance:
serial number | Test items | standard requirement | test result | Single conclusion |
1 | Appearance of paint film | The appearance of the coating film is normal | conform to | qualified |
2 | status in container | Off-white granular and powder mixture | conform to | qualified |
3 | Surface drying time, h | ≦2 | 1 | qualified |
4 | Fire resistance coating thickness 30mm | ≧3.5 | 3.5 | qualified |
5 | adhesion | ≥1 | 1 | qualified |
Health and Safety:
Please pay attention to the warning labels on the packaging containers. Use in a well-ventilated environment. Do not inhale paint mist and avoid skin contact. If paint is spilled on skin, wash away immediately with suitable detergent, soap and water. If it splashes into your eyes, rinse them thoroughly with water and seek medical treatment immediately.
statement
The information provided in this product data sheet is based solely on our knowledge gained in the laboratory and in practice. However, since the use of products is usually beyond our control, we only guarantee the quality of the product itself. We reserve the right to modify this manual without prior notice.