At this stage, the state is paying more and more attention to the renovation of old residential housing, and the renovation of residential housing in the "14th Five-Year Plan" is also one of the key points of the deployment plan. However, many residents still have a lot of confusion about the problem of external wall insulation, and the most common is that residents question the thickness of the insulation board is too thin, and they are worried that it will not have a good thermal insulation effect. So do you know in front of the screen, is the thickness of the exterior wall insulation board really the thicker the better?Let's take a look at it today.
Exterior wall insulation board is a very common building energy-saving material, the main role is energy-saving, thermal insulation, and at the same time, it can also play a certain role in protecting the house structure. Common insulation boards mainly include polystyrene foam boards, rigid polyurethane insulation boards, rock wool boards, cement foam boards and now emerging integrated insulation boards.
In fact, the influencing factors of thermal insulation effect is a very complex and diversified problem, today we will talk about the following aspects:
1. The thermal conductivity of the material, the most intuitive parameter for the thermal insulation and energy-saving effect of the insulation material is the thermal conductivity of the material, the smaller the thermal conductivity, the better the thermal insulation performance. That is to say, the thickness of the material cannot be the only criterion for judging whether the insulation layer of the building is insulated. Under the same conditions, the lower the thermal conductivity, the better the thermal insulation performance.
2. The influence of the structure itself, the building of different structures, even if the same material is used, the thermal insulation effect is also very different, with the same material, the old brick masonry exterior wall is greatly discounted compared with the concrete exterior wall, even if the better thermal insulation board is used, the configuration is placed on the building with poor structural performance and the external window is not renovated, and the energy-saving and thermal insulation effect can not play better.
3. Environmental impact, even if it is the same type of insulation material, in different environments, the thermal insulation effect will be different, mainly in the case of different temperature and humidity. In general, within a certain range, the thermal conductivity of the material will increase accordingly as the temperature increasesAs the humidity increases, the thermal conductivity also increases. Even in the same area, the thermal insulation effect of the same material will be different when the temperature and humidity are different. In particular, the difference will be more obvious when encountering insulation materials with poor stability.
It can be seen that the energy-saving and thermal insulation of buildings is a complex and diversified problem, and the thermal conductivity, material, and product stability of the material itself affect its thermal insulation and thermal insulation performance. In recent years, due to the gradual improvement of people's quality of life, the traditional low-quality thermal insulation building materials have been unable to meet people's needs for building insulation, heat insulation, is being eliminated by the market, many large enterprises have begun to high-quality, high-tech new green building materials for upgrading and transformation, Tangshan Weiji Group is one of the representatives. The WJ reinforced connection composite insulation board independently developed and produced by Weiji Group has the characteristics of low thermal conductivity, fire and moisture resistance, good stability, etc., especially its integrated construction technology, which pours the insulation material inside the concrete, so that the insulation layer and the enclosure structure are integrated, which not only improves the thermal insulation and thermal insulation effect of the building wall, but also achieves the purpose of the same life of the insulation layer and the enclosure structure, so as to extend the service life of the whole building.
In addition, with the continuous progress of China's external wall insulation technology, there is still a broad research space in related fields, and everyone is welcome to discuss together