When the outdoor temperature is lower than the indoor temperature, the contraction of the outer wall is faster than the speed of the internal thermal insulation system; When the outdoor temperature is higher than the indoor temperature, the expansion speed of the external wall is higher than Flame retardant fabric that of the internal heat preservation and insulation system. The repeated deformation of the flame retardant grade makes the internal heat preservation and insulation system always in an unstable wall basis. Under the repeated action of the deformation stress, not only the external wall is vulnerable to the damage of the thermal stress, but also easy to cause the cavity cracking of the internal heat preservation and insulation system.Flame retardant fabric
Internal insulation affects the residents’ secondary decoration, UV proof fabric hanging on the inner wall and fixed objects are also easy to damage the internal insulation structure. The technical irrationality of internal insulation determines that it must be replaced by external insulation. Internal and external mixed thermal insulation technology analysis Internal and external mixed thermal insulation, is the construction method of external thermal insulation in the domestic and foreign thermal insulation construction operation is convenient, external thermal insulation construction operation is not convenient part of the internal thermal insulation, flame retardant multifunctional composite cloth so as to heat preservation of the building. From the perspective of construction operation, mixed insulation can improve the construction speed, and effectively protect the cold (hot) bridge at the intersection of the inner wall, the board and the outer wall that can’t be protected by the internal insulation of the outer wall, so as to make the building in thermal insulation.Flame retardant fabric
However, mixed thermal insulation has serious damage to the building structure. External insulation parts make the structure of the building wall is mainly affected by the indoor temperature, the temperature change is relatively small, so the wall is in a relatively stable temperature field, the temperature difference deformation stress is relatively small; The internal insulation part makes the structural wall of the building mainly affected by the outdoor environment temperature, which fluctuates greatly, so the wall is in the relatively unstable temperature field, and the temperature difference deformation stress is relatively large. Local external insulation, local internal insulation mixed use of thermal insulation, the whole building external wall of the main body of different parts of the deformation speed and deformation size, the building structure in a more unstable environment, after years of temperature difference structure deformation cracks, thus shortening the life of the whole building. It is unreasonable to use internal and external thermal insulation in engineering thermal insulation practice, which is more harmful than internal thermal insulation. This method has been rarely used.
Post time: Nov-15-2022