Foam Material Insulation Characteristics
An industrial insider said that retardant and insulation really is a contradiction, things with good fireproof performance have bad insulation properties; if the insulation performance of something is good, very soft, very loose, then the flame retardant is bad. In this stage, building energy-saving insulation system usually select light weight, thermal insulation, good heat insulation, fire protection, security, easy to aging, the combustible energy efficient foam board insulation material as the main. Polyurethane insulation materials are easily burned, and it burns very fast. Polyurethane PVC foam boards for external wall insulation decoration, series of incidents of building fire occurred in recent years, so there is a serious threat to the safety of people's lives and property.
PVC foam boards
Polyurethane Foam Board is not Favored
The combustion of polyurethane insulation materials will produce large amounts of toxic gas, the foam combustion will produce a large number of highly toxic hydrogen cyanide gases, once people intake it will be poisoned. In addition, the polyurethane insulation materials are limited useful life, in the long run is not energy-efficient. A building's life can be a hundred years, or even centuries. And industry insiders point out that, building external wall insulation layer theory data lifespan is 20 years, sometimes 8 to 10 years will be distorted, cracking off. It is understood that in the developed countries of Europe and the United States, the flammable insulation material is prohibited to use. The United States in more than 20 states ban the use of polystyrene foam boards. Britain provisions thin plaster external wall insulation system construction is not allowed to use more than 18 meters. German law stipulates that the building more than 22 meters above the non-use of organic combustible insulation materials. The Japanese government has introduced regulations, the flame phenolic foam as standard flame retardant material for public buildings. Flame resistance lower than the phenolic foam does not allow to use in public buildings. Many foreign insurance companies prohibit insurance to polyurethane white foam board insulation buildings.
Polyurethane Foam Board will be Eliminated
Insulation materials sales in the Chinese market are still low-end products, facing the many halogen, low smoke, and efficient environment-friendly flame retardant insulation material situation of the birth of the face of the Western countries every year, whether it is in the development of the thermal insulation material, modified, or in the promotion of the product range, market-oriented, China is lagging behind. Therefore, it is recommended that you can take the thickening of the wall, the wall intermediate folder perlite wall sandwiching foam to strengthen external wall insulation effect.
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