The performance advantages of polyurethane exterior wall insulation board
发布时间：
2014-06-06
Polyurethane sandwich panels are used as building insulation materials. Polyurethane rigid foam breaks the single function of traditional building materials—waterproof is not insulated, and thermal insulation is not waterproof. Once the waterproof layer leaks, the insulation layer will lose its insulation function. Compared with other single-function thermal insulation or waterproof materials, polyurethane rigid foam has obvious advantages: 1. Polyurethane rigid foam has a multi-purpose function, and has many functions such as heat preservation, waterproofing, sound insulation, and vibration absorption. 2. Excellent thermal insulation performance, it is the thermal insulation material with the lowest thermal conductivity (≤0.024) and the highest thermal resistance value among all building materials in China at present, and the thermal conductivity is only half of EPS foamed polystyrene board.
Polyurethane sandwich panels are used as building insulation materials. Polyurethane rigid foam breaks the single function of traditional building materials—waterproof is not insulated, and thermal insulation is not waterproof. Once the waterproof layer leaks, the insulation layer will lose its insulation function. Compared with other single-function thermal insulation or waterproof materials, polyurethane rigid foam has obvious advantages: 1. Polyurethane rigid foam has a multi-purpose function, and has many functions such as thermal insulation, waterproofing, sound insulation, and vibration absorption. 2. Excellent thermal insulation performance. It is the thermal insulation material with the lowest thermal conductivity (≤0.024) and the highest thermal resistance value among all building materials in China. The thermal conductivity is only half of EPS foamed polystyrene board. 3. The continuous and dense skin of the rigid polyurethane foam and nearly 100% high-strength interconnected walls have closed cells, which are ideally impermeable to water. The spraying method is used to achieve continuous and seamless waterproof and thermal insulation layers, forming a seamless roof and an overall external wall thermal insulation shell, with excellent waterproof and impermeability performance. 4. Super self-adhesive performance (no need for any intermediate bonding material), firmly bonded to the roof and exterior wall, good wind resistance and negative wind pressure resistance; the overall spraying construction completely eliminates "hot joints" and "cold bridges" , The flexible gradient technology can effectively prevent the cracking of the waterproof layer; mechanized operation, automatic batching, uniform quality, fast construction and short cycle. 5. The chemical properties are stable, the service life is long, and it does not cause pollution to the surrounding environment; it is self-extinguishing from an open flame, and only carbonizes without dripping when burning. The size and shape of the carbonized layer are basically unchanged, which can effectively block the entry of air and prevent the fire Spread, good fire safety performance. As the only new building material that integrates thermal insulation and waterproofing, the application of polyurethane rigid foam thermal insulation materials in the domestic construction industry is still in its initial stage. The good news is that in order to speed up the innovation of building insulation materials and promote the promotion and application of polyurethane rigid foam in the field of building energy conservation, the Ministry of Construction has specially established the "Polyurethane Building Energy Saving Application Promotion Working Group" to promote the use of polyurethane rigid foam insulation and waterproof materials in domestic buildings. Application in energy saving industry
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