Standard answer: The fire resistance time of rock wool grade A1 fireproof material is more than 2 hours (120 minutes).
Rock wool is a fireproof material widely used in the construction field, which has good thermal insulation properties and fire performance. Among them, A1 grade stone wool is one of the highest level of fireproof materials, with extremely high fire performance and long fire resistance time. Rock wool
First of all, let's take a look at the refractory time of A1 grade stone wool. A1 grade rock wool refers to the characteristics of no burning dripping and no open flame spread of rock wool materials under standard fire conditions. According to the relevant test standards, the fire resistance time of A1 grade rock wool can reach more than 2 hours. This means that for a long time after the fire, A1 grade stone wool can effectively resist the spread of flames, fighting for more escape time and rescue opportunities for people.
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So, how does A1 grade stone wool achieve a long fire resistance time?This is inseparable from its physical properties. Rock wool is made of natural basalt or other lava ores that are melted at high temperature and sprayed with cotton. This manufacturing process gives the stone wool a high melting point and thermal insulation properties. In the event of a fire, rock wool will quickly form a dense slag layer, which can effectively block the spread of heat and flames, thereby prolonging the damage time of the fire to the building.
In addition, A1 grade stone wool also has other excellent characteristics. First of all, it is an inorganic non-metallic material, which does not produce harmful gases and soot, and is harmless to human healthSecondly, rock wool has good thermal insulation performance, which can effectively reduce the transfer of heat energy and improve the energy-saving performance of buildingsThirdly, rock wool also has excellent sound absorption performance, which can reduce indoor noise pollution.
However, despite the long fire resistance time and other excellent properties of A1 stone wool, we still need to pay attention to it during use. First of all, it is necessary to ensure the installation quality of A1 grade stone wool to avoid gaps or damage to ensure that it has the best fire protection effectSecondly, in the process of use, it is necessary to pay attention to moisture-proof and moisture-proof, so as to avoid the decline of rock wool due to moistureFinally, it is necessary to regularly inspect and maintain the rock wool material, and replace the aging or damaged parts in time.
In summary,The fire resistance time of rock wool A1 fireproof material is more than 2 hours (120 minutes). As a high-quality fireproof material, A1 grade stone wool plays an important role in the construction field. Its fire resistance time is long, which can effectively delay the damage of fire to buildings, and provide people with more escape time and rescue opportunities. During use, we need to pay attention to the quality of installation, moisture and moisture resistance, as well as regular inspection and maintenance to ensure its long-lasting fire protection effect.
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