According to the spirit of the Ministry of Housing and the Ministry of Public Security and the Ministry of Public Security No. 46 documents and the document No. 65 of 2011, the external wall insulation function has been upgraded to the external wall fire insulation function, and the A-level fireproof material has been forcibly applied to the external wall insulation, which becomes an objective need. The market is uneven and the quality is very different. Therefore, it is necessary to make a good choice when applying. This introduces the fire-resistant insulation system of expanded refractory materials.
1. System Introduction
Intumescent refractory slurry fireproofing and heat preservation system technology uses expanded mineral refractory granules, and uses Jinling brand inorganic alkali-free and non-corrosive exterior wall fireproof thermal insulation board adhesive as adhesive, which will be fixed by special mechanical anchor fixing parts. The fireproof insulation board is attached to the outer wall, and then the anti-cracking mortar is applied, and the glass fiber mesh cloth is pressed to form a structural protection layer, and finally the outer wall fireproof insulation system of the outer layer is added as required.
2. Main performance:
a. High flexural strength (0.2-1.0MPa/30-80mm thickness), high compressive strength (0.5-3.0MPa);
b. The thermal conductivity is small (0.05-0.065W/km) and can be adjusted according to the instructions;
c. Moderate weight (220-280kg/m3), can be adjusted as needed;
d. Absolutely no alkali and no halogen, fundamentally avoid the serious consequences of powdering, embrittlement and shedding after returning halogen and anti-alkali;
e. Double waterproofing, high softening coefficient (≥0.8), no immersion agent water immersion strength decreased by ≤10%, if added, the effect is better;
f. Freeze-thaw resistance, frost resistance (30 times), mass loss (%) ≤ 3 strength loss (%) ≤ 10
g. Dry shrinkage value (fast method) (mm/m) ≤ 0.3
h. Non-toxic, high temperature resistance, (>1300 °C, fully meet the A-class standard), no shrinkage after combustion, no deformation, no powdering, good sound insulation, good elasticity, heat-insulating flame retardant, no black smoke, high temperature and high flame Non-toxic gas after burning (according to the national standard AQ1);
i. Unique breathing material, prevent the accumulation of internal moisture, and the moisture absorption and condensation of water vapor formed during the process of alternating high temperature and low temperature, which leads to the disadvantage of the plate, effectively eliminating the safety hazards of the wall and the outer layer. ;
j. Stable performance, low cost, is a special adhesive for making fire insulation boards, firewalls, etc.
3. Selection range of intumescent refractory slurry main materials:
Expanded perlite, vitrified microbeads, expanded vermiculite, etc.
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