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

Types and advantages and disadvantages of external wall insulation materials

External wall insulation materials are an important component of building energy efficiency, and their performance directly affects the insulation effect and energy consumption of buildings. There are various types of external wall insulation materials commonly found in the market, each with its own advantages and disadvantages. This article will introduce several common exterior wall insulation materials and their advantages and disadvantages.

1、 Polystyrene foam board (EPS)

Polystyrene foam board is a common organic thermal insulation material with good thermal insulation performance and low cost. Its advantages are low thermal conductivity and good insulation effect; The disadvantages are low compressive strength, susceptibility to moisture, and poor combustion performance.

2、 Extruded polystyrene foam board (XPS)

Extruded polystyrene foam board is improved on the basis of polystyrene foam board, which has the advantages of lower thermal conductivity, better insulation effect, higher compressive strength, and is not easy to damp. However, the production cost of XPS is relatively high, and its combustion performance is still not ideal.

3、 Rock wool board

Rock wool board is an inorganic insulation material with good fire resistance and durability. Its advantages are low thermal conductivity, good insulation effect, non flammability, and good sound insulation effect. The disadvantage is that it has a high water absorption rate, is prone to moisture, and may generate dust pollution during installation.

4、 Glass wool board

Glass wool board is also an inorganic insulation material with good insulation and fire resistance properties. Its advantages are low thermal conductivity, good insulation effect, non flammability, and light weight. The disadvantage is that it has a high water absorption rate, is prone to moisture, and may generate dust pollution during installation.

5、 Polyurethane foam board

Polyurethane foam board is an organic thermal insulation material with excellent thermal insulation and fire resistance. Its advantages are low thermal conductivity, good insulation effect, and good combustion performance. The disadvantages are high cost, sensitivity to temperature and humidity, and easy aging.

In short, there are various types of external wall insulation materials, each with its own advantages and disadvantages. When choosing external wall insulation materials, suitable insulation materials should be selected based on factors such as the building's functional use, climatic conditions, and fire prevention requirements. At the same time, attention should be paid to the environmental performance of materials to reduce their impact on the environment.