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Huaqiang Security Network News ]
The two aspects of the problem are explained to everyone, the performance specifications of a fire retardant coating, and the construction method of the second fireproof coating.
Performance specifications of fire retardant coatings:
The state in the container is evenly and finely stirred, without agglomeration
Drying schedule dry ≤8h
Appearance and color The dry appearance and color of the coating are not significantly different from the sample.
Initial dry crack resistance should not be cracked
Bonding strength / Mpa ≥ 0.20kpa
Water resistance ≥24h coating without delamination, foaming, shedding
Fire resistance ≥15 times coating should be free of cracking and peeling
Resistance to cold and heat cycle / secondary fire resistance limit should not be less than 0.1h
Measured refractory time When the coating is 1.6mm, the fire resistance exceeds 1.7 hours.
Fireproof coating construction method:
1. Before the construction of fireproof coating, the dust, oil, and debris on the surface of the steel structural member should be cleaned and rust-removed, and the anti-rust primer should be applied to ensure that there is no chemical reaction with the fireproof coating. The fireproof coating can be applied after the anti-rust paint is dry.
2. The construction shall be carried out after the steel structure project has passed the inspection, the pipe fittings connected with the steel structure are installed, the roof waterproofing project is completed, and the interior decoration is completed.
3. The construction should be guaranteed not to be damaged by subsequent projects, and attention should be paid to the shielding protection of other charities on the site. Before the construction process and coating drying and curing, the ambient temperature should be maintained at 5-40 ° C relative humidity ≯ 90%, good ventilation to the site.
4, using inkjet, painting, roller coating and other methods to divide the construction. After the coating applied for the previous time is substantially dry and solidified, it is usually separated by 8-24 hours to the desired thickness after spraying.
5. Before use, it should be fully stirred evenly. The coating is slightly thick. The water-based paint can be diluted with water. The solvent-based paint is diluted with special thinner to facilitate brushing.
6. The coating immediately after construction should be waterproof, exposed, contaminated and mechanically damaged. If it is damaged, it needs to be repaired.
Precautions:
1. This fireproof coating is different from other paints. The dilution is diluted with water or special solvent according to the nature of the paint. It should not be mixed.
2. The paint that has not been used during construction should be sealed and stored. It should be stored in an environment of 3-40 °C and rigorously frozen.
3. The product should be stored in a cool, dry and ventilated environment.
4. When the product is transported, it should be protected from rain and bumps.
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