Polyurethane has become superiority in the construction

In recent years, polyurethane is an important and widely used polymer material, and its demand showed a sharp upward trend, especially in the construction industry applications. As the countries in the world on environmental protection, greenhouse effect, the energy consumption of all laws and regulations more complete, requiring more strict, rigid polyurethane superiority in terms of building applications can also increasingly prominent. We are often in contact with the insulation material, typically EPS, XPS, PU three, we have respective characteristics and trends to make an analysis.

EPS is made ​​of polystyrene , is a thermoplastic plastic , the advantage of low cost and good thermal insulation properties, but poor flame retardant properties, adhesive properties in general, it can only be a transitional product.

XPS is also known as extruded polystyrene foam board, which is the process of re-melting scrap polystyrene particles, high temperature and high pressure extrusion process of injecting Freon and other foaming agent, so as to form a cell-like structure, also have some insulation properties. Because this material is reasonable recycling polystyrene waste, so it is environmentally friendly, its outstanding advantage is the cost in general, good water resistance, high strength, shape stability, even as a runway material, in recent years a wide range of for external wall insulation fields. The disadvantage is the poor adhesion properties, thermal insulation properties in general.

Currently building energy consumption has become a major obstacle to sustainable development in the world, in China, building energy consumption is close to 30 percent of the total energy consumption of new and existing buildings, high energy consumers were 99% and 95% . Building energy efficiency is imminent. Essential for thermal insulation of buildings, the core problem is the insulation material of choice. EPS recycling industry is gradually mature today.