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Question 1: What are the advantages of rockwool acoustic panels in building heat preservation and fire prevention? What problems should be paid attention to?
Building fires are a very scary thing that no one wants to see. Rock wool itself is a silicate fiber inorganic material that is non combustible. Rock wool has insulation properties and belongs to Class A fire-resistant materials.
When using rock wool acoustic panels, not only does it ensure the insulation effect, but its fireproof performance also meets the fire protection standards.
To do a good job in fire prevention for external wall insulation, the following points need to be taken into account:
Strictly comply with various fire regulations and fire safety systems. Choose good insulation materials, take fire prevention measures for the primary stage of insulation material use, monitor the construction process for the intermediate stage, and prevent the possibility of various fires;
After making the insulation material into an external wall insulation system, the correct use and prevention of fires should be carried out after the insulation system is in place.
Question 2: Rock wool products is with good thermal conductivity and fire resistance, how about its tensile strength, water absorption and durability?
The high-quality rock wool acoustic panels can fully meet all the requirements for tensile strength, water absorption, durability, and insulation performance, and it belongs to Class A non combustible materials.
In most applications, the insulation performance of rock wool can be comparable to that of polystyrene board, and even exceeds that of polystyrene board in some applications.
Question 3: Can rock wool acoustic panels be applied to the external wall insulation composite system?
External wall insulation system refers to an engineering practice that uses certain fixing methods (bonding, mechanical anchoring, spraying, pouring, etc.) to fix insulation materials with low thermal conductivity (good insulation effect) to the building wall, increase the average thermal resistance value of the wall, and achieve insulation or thermal insulation effect.
The rock wool exterior wall insulation system has the advantages of low thermal conductivity, good breathability, and high combustion performance level.
It can be applied to energy-saving insulation projects for the exterior walls of newly built, expanded, and renovated residential and public buildings.
Rock wool is an excellent insulation product in external wall insulation composite system. Moreover, due to its non combustible performance, rock wool is also a preferred material and solution for building fire safety, and is regarded as the preferred material and solution for high-rise buildings.
The flammability of foam insulation products will cause great risk and damage to people and property, so it is not allowed to use this material in high-rise buildings in Europe and the United States.
Question 4: In Europe, such as Germany, does rock wool acoustic panels only occupy a small market share in all applications of external insulation composite system?
In Germany, for high-rise buildings over 22 meters, rock wool has a market share of 100% in the external wall insulation composite system.
In all applications of external wall insulation composite systems, rock wool has a market share of 5.6%, but this statistical result includes the most common building in Europe, that is low rise single family residential buildings, which is not comparable to the high-rise building structures prevalent in China.
Question 5: What's the difference between rock wool and slag wool?
Rock wool and slag wool belong to different products.
The main component of slag wool is slag, which has the characteristics of high slag ball content, low melting point and acidity coefficient. Therefore, slag wool has a high thermal conductivity and severe thermal shrinkage when exposed to fire.
Slag wool is usually not suitable for use in projects with fire prevention requirements. Moreover, slag wool is not applicable in external wall insulation composite systems.
Question 6: Will rock wool acoustic panels cause harm to human health?
Of course not.
Some organizations (such as the World Health Organization) have conducted extensive research on whether rock wool fiber is carcinogenic, and the results clearly indicate that rock wool fiber is not a carcinogen.
The research result is: "Insulated glass wool, continuous glass fiber, rock wool, and slag wool cannot be classified as human carcinogens (Class 3).
The carcinogenicity research of rock wool is well known, and these research reports are publicly available. Furthermore, regarding health issues, we are not aware of any restrictions on the use of rock wool.
It is worth mentioning that HBCDD is a PBT substance (persistent, bioaccumulative and toxic substance), which is used to make certain foam products reach Grade B1.
The European Chemical Agency has earlier decided to list HBCDD as a substance requiring special attention (SVHC). From production to installation and dismantling, mineral wool (including rock wool) can be excluded as harmful substances.
Question 7: Will rock wool production process consume a lot of energy and produce a lot of emissions?
All or most of the production waste in modern factories is recyclable, after a small amount of waste is processed, the emissions will be reduced to the lowest level.
Manufacturing 1 kilogram of rock wool consumes about 20MJ of energy, while manufacturing 1 kilogram of polystyrene board consumes at least 85MJ.
The raw materials for manufacturing polystyrene boards are mainly mineral fuels such as oil and natural gas, while the production of rock wool only requires the use of very ordinary rocks (basalt), with almost unlimited available reserves.
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