无码无套少妇毛多18pxxxx,日韩欧美一区二区福利视频,17c视频在线观看,中文字幕久久久久久妻,日本黄色精品专区网站

The coefficient of linear expansion of rock wool composite board is much lower than that of other insulation materials, similar to that of steel and concrete. This means that under the same environmental temperature difference and size, rock wool composite panels are more stable than other insulation materials. When applied to steel-concrete structural walls, due to the significant difference between thermal expansion coefficient and cold shrinkage coefficient, it is not easy to cause thermal bridges or warping fractures.

Select sound-absorbing materials for construction projects. Firstly, we can confirm that most sound-absorbing materials are porous materials, while rock wool composite panels and glass wool are inorganic fiber materials. The two materials have similar structures and the same sound absorption principle. Through the vibration and friction of fibers, sound energy is converted into thermal energy. In the process of using rock wool composite board, if hanging board technology is used, according to national regulations and long-term construction and installation experience, the height requirement should not exceed 60cm. However, in the actual installation process, various factors should be considered, such as the direction of the building. And wind direction

The chemical and physical structure is stable, will not decompose or mold, has no radiation, and is harmless to the environment. The board can also be flexibly disassembled, reused, and installed on other buildings, and the remaining materials can be recycled, greatly reducing construction waste during the construction process. It is a high-quality, high-performance product. The construction speed of rock wool composite panels is fast, more than twice that of aluminum-plastic panels. The renovation of old buildings does not require foundation treatment. Install the hanging board directly. Long service life, thermal insulation and sound insulation, equivalent to the thermal insulation and sound insulation effect of 4cm thick polystyrene board.

For many buyers, they should pay attention to the quality of integrated insulation and decorative panels, which are a special type of synthetic material. There are no very detailed technical requirements. It is necessary to use it to detect the quality, composition, and density of products to avoid serious problems. Strictly following the requirements of building energy-saving design, the construction method of energy-saving insulation has more and better insulation functions than traditional construction methods. Then, choose a more suitable height based on these factors.