Building Exterior Wall Aerogel Insulation Puts A “Cold-proof Jacket” on the Building
2018-05-30 17:24:14 From: Tradematt-Aerogel
Building external wall insulation often becomes the “culprit” of fire.
Polystyrene board is a kind of organic board made of polystyrene resin as the main body, adding foaming agent and other additives. It has the advantages of lighter weight, lower thermal conductivity, good impact resistance, recyclability, etc. 80% of the market for building exterior wall insulation.
However, polystyrene boards have two major drawbacks: flammable and toxic.
Ordinary polystyrene board is very easy to burn, even with the addition of flame retardants, the flammability of this material can only meet the national standard of Class B standards.
Even more frightening is that once the polystyrene board begins to burn, it will release a lot of heat, resulting in a lot of toxic smoke - scientists in the polystyrene board combustion process found in the decomposition products of benzene, toluene, formaldehyde, etc., will be very short Built in time to death.
Inorganic materials such as rockwool and glass wool are also used in the field of building external wall thermal insulation.
Compared with organic materials such as polystyrene boards, the fire performance of rock wool and glass wool is indeed much stronger, and can reach Class A non-flammable standards in the national standard. However, the thermal conductivity of rockwool and glass wool is relatively high, which is about 0.040 W/m.K at room temperature, which results in the poor thermal insulation performance of the exterior wall of the building, which in turn leads to the consumption of more energy.
The respective defects of these materials make “building energy saving” and “fire safety” become like “fish and paws” and it is difficult to have both. The Tradematt building exterior wall aerogel insulation is the key material for solving the contradiction between building “energy saving” and “fire fighting”.
The main component of the tradematt building wall aerogel insulation is silica, which is incombustible with inorganic materials and meets the Class A non-combustible standard of the national standard CB8624-2012 “Combustion Performance of Building Materials and Products”.
At the same time, the trade size of the tradematt building exterior wall aerogel insulation is nano-sized, and air can hardly transmit heat in the hole. Therefore, at room temperature, the thermal conductivity coefficient of the exterior insulation layer of Tradematt aerogel building is as low as 0.020 W/m.K.
Tradematt building exterior wall aerogel insulation is like a cold jacket for a building, which can greatly reduce the energy consumption of the entire building. Moreover, even if there is a fire in a certain position on the external wall of the building, Tradematt building exterior wall aerogel insulation will give people enough escape time.
At present, China Building has not yet used the building exterior wall aerogel insulation in a large scale. In the US market, the largest application of Tradematt building exterior wall aerogel insulation is in the field of building materials.
The US Department of Housing and Urban-Rural Development has a clear and strict regulation on the insulation properties of houses. Developers must provide thick insulating layers to the interior and exterior walls and floors of buildings in order to meet such regulations until building exterior wall aerogel insulation. appear. As a result, the building walls of the United States have been greatly reduced in size, and the net space for houses has increased significantly and the area has become smaller. The increase in costs and the honest delivery to the ultimate consumer are also fully acceptable to consumers by calculating the annual energy savings rate.