Why add flame retardant, let's talk firstflame retardantFlame retardant advantage. As fires continue to occur,flame retardantIt has become one of the essential products for fire prevention.

A: a wide range of applications, high technical content

Flame retardants can meet the flame retardant requirements of all walks of life, such as the most common insulation materials in daily life. External insulation is not only suitable for civil buildings and industrial heating buildings in cold areas, but also for refrigeration and air conditioning buildings in warm areas. It can be used for new construction and more suitable for energy-saving renovation projects of old buildings. External insulation materials require high technology content, complete materials, advanced and reasonable construction technology. The implementation of building external insulation technology will stimulate the development of energy-saving materials in China's high-tech industries.

Two: protect the main structure, extend the life of the building

The external wall insulation scheme is adopted. Due to the outside of the building envelope, the stress caused by structural deformation due to temperature changes is buffered, the structural damage caused by rain, snow, freezing, thawing, dry and wet cycles is avoided, the carbonization of concrete by carbon dioxide and water in the air and the corrosion of steel structure caused by corrosion are reduced, and the erosion of harmful gas and ultraviolet rays in the air on the maintenance structure is reduced. Facts have proved that as long as the wall and roof insulation materials are properly selected and the thickness is reasonable, the external insulation can effectively eliminate the common oblique cracks or splay cracks in the top horizontal wall. Therefore, the external insulation can not only reduce the temperature stress of the maintenance structure, but also protect the main structure, thus effectively improving the durability of the main structure, so it is more scientific and reasonable than the internal insulation.

Three: the basic elimination of the "thermal bridge" phenomenon, better play the material of heat preservation and energy saving function

The use of external insulation is more beneficial than internal insulation in avoiding "thermal bridges", such as the increase of "thermal bridges" generated at the junction of internal and external walls, external wall ring beams, structural columns, frame beams, columns, door and window openings, and the periphery of the junction between the top parapet and the floor panel. According to relevant statistics, the building along the external wall "thermal bridge" to increase the heat loss of about 25%, visible "thermal bridge" to increase the heat load is quite large. The above-mentioned "thermal bridge" is almost unavoidable for internal insulation and sandwich, while external insulation can prevent condensation at the "thermal bridge" site and eliminate additional heat loss caused by the "thermal bridge. The calculation shows that under the condition of 370mm thick brick wall internal insulation, the peripheral "thermal bridge" increases the average heat transfer coefficient by about 10%. Under the condition of 240mm thick brick wall internal insulation, the peripheral "thermal bridge" increases the average heat transfer coefficient by about 51% ~ 59% compared with the heat transfer coefficient of the main part, while under the condition of 240mm thick brick wall internal insulation, this effect is only 2% ~ 5%, visible external insulation practices more effectively reduce the indoor heat load.

Four: reduce the internal wall cracks, convenient in the interior decoration and wall hanging, fixed objects. At present, where the use of internal insulation technology engineering is generally faced with the problem of surface cracking. One of the main reasons is that the outer wall is directly exposed to the atmosphere, and the temperature change constantly causes deformation stress, which easily leads to the inner insulation layer with low strength and its layer cracking. This phenomenon is particularly evident in high-rise buildings and east-west oriented strip buildings. The cracking caused by the temperature and humidity deformation of the outer wall is avoided on the inner wall of the external insulation, so as to reduce the complaints of the residents and facilitate the wall construction and interior decoration.