国产a一级视频播放_日韩国产一级毛片_都市激情 在线 亚洲 国产_泰洋川禾香蕉视频小黄片_成人快色视频在线观看_给我脱腿张开抽插_蜜臀av网站在线_亚洲无码不卡宅男_亚洲欧美综合中文字幕另类免费最新国产_无码日韩手机观看网站

For the renovation of the exterior wall insulation of old residential areas, measures should be taken according to local conditions, and it should not be avoided as a problem. It is recommended to use thinner (1-2cm) flame-retardant polystyrene boards or flame-retardant extruded boards and other materials for side insulation around the windows. The thermal insulation performance of the exterior wall insulation material is excellent, but the combustion performance is not ideal. This puts forward new requirements for the insulation material manufacturers, and requires a new insulation material that can achieve both A2 combustion performance and excellent thermal insulation performance.

Renovation of the exterior wall insulation material of the old residential area, measures should be taken according to local conditions

The temperature of the exterior wall insulation material does not rise quickly with the radiation of the heat source. In other words, in fact, the reason why most insulation materials can be heat-insulated is because of the superiority of the material itself. If the material itself is better, then the price of the insulation material will generally be higher than other ordinary materials.

In the exterior wall insulation project, due to the poor use conditions, the interface layer is easy to debond and hollow, the surface layer is easy to crack, and other problems, thus achieving an important breakthrough in the exterior wall insulation technology. Compared with other external insulation, under the condition of achieving the same insulation effect. The parameter of the heat transfer capacity of the insulation material reflects the thermal conductivity of the material and is the main thermal physical property of the insulation material. Thermal conductivity is closely related to some other physical properties of the material, as well as the internal structure of the material and the size of the insulation layer.

The insulation decoration integrated board is in a large temperature difference environment and requires the calcium silicate board to have a high anti-freeze and thaw ability. In order to ensure that the material will not be delaminated and damaged under harsh climatic conditions, the external wall insulation decoration integrated board requires products with low water absorption.