With the rapid development of the construction industry, external wall insulation technology has become the key to improve building energy efficiency and comfort. This paper will deeply discuss the current advanced materials and technology of exterior wall insulation board, and provide new ideas and methods for the field of building insulation.

First, advanced exterior wall insulation board materials

Polystyrene foam board (polystyrene board)
Polystyrene foam board is a kind of commonly used exterior wall insulation material, which has the advantages of light weight, low thermal conductivity and convenient construction. Their excellent physical properties and low cost make them widely used worldwide. Polystyrene board can effectively reduce the energy consumption of buildings, and has good moisture resistance and anti-aging performance, which helps to extend the service life of buildings.

Polyurethane foam board
Polyurethane foam board is a new type of exterior wall insulation material, which has excellent thermal insulation and thermal insulation performance. It not only has good fire resistance and weather resistance, but also can maintain stable performance in harsh climatic conditions. Polyurethane foam board also has excellent adhesive properties and anti-penetration properties, which can effectively prevent leakage of buildings.

Glass wool board
Glass wool board is an inorganic thermal insulation material with excellent thermal insulation and high temperature resistance. Its thermal insulation performance is better than many organic thermal insulation materials, which can effectively improve the energy saving performance of buildings. In addition, the glass wool board also has good sound absorption and fire performance, which helps to improve the environmental comfort of the building.

Second, advanced external wall insulation technology

External hanging external insulation technology
Exterior hanging insulation technology is a method of hanging insulation material directly on the outside of the building exterior wall. This technology is not only suitable for new structural engineering, but also for old building reconstruction. External hanging external insulation technology can effectively reduce the thermal bridge of the building structure, increase the effective space of the building, and eliminate condensation, improve the comfort of living. At present, the external hanging insulation materials are mainly rock (mineral) cotton, glass wool felt, polystyrene foam board, ceramic concrete composite polystyrene imitation stone decorative insulation board, etc.

Cavity-free construction techniques
When using external insulation materials such as polystyrene board, in order to improve the strength of the insulation board, the cavity-free construction technology is usually used. By increasing the bonding area as much as possible, this technology can meet the requirements of resistance to wind pressure damage. The cavity-free construction technology helps to improve the stability of the insulation system and prevent the insulation layer from cracking or even falling off.

Base treatment and bonding construction technology
The construction of external wall insulation material should first carry out basic treatment, including cleaning the sundries, oil and dust on the surface of the base, and repairing the cracks and holes on the surface of the base. The quality of the base treatment directly affects the durability and service life of the outer insulation layer. In the construction process, the appropriate external wall insulation material should be selected according to the actual situation, and the requirements are strictly in line with national standards and industry standards. Bonding construction is a key link in the construction of external wall insulation materials. It is necessary to adopt correct bonding materials and bonding methods to ensure uniform coating and appropriate thickness of the bonding materials, and strictly control the construction quality.

Advanced materials and technologies for exterior insulation panels are of great significance for improving building energy efficiency and comfort. Thermal insulation materials such as polystyrene board, polyurethane foam board and glass wool board have their own characteristics and are suitable for different building needs. The application of advanced technologies, such as external insulation technology, cavity-free construction technology and base treatment and bonding construction technology, helps to improve the stability and durability of the insulation system. In the future, with the progress of science and technology and the development of the construction industry, the material and technology of external wall insulation board will continue to innovate and improve, bringing more possibilities to the field of building insulation.