is composed of a large number of micropores and polyurethane resin hole wall meridians The porous polyurethane material is generally called "polyurethane foam", called "polyurethane foam" or "cellular polyurethane" in English. Polyurethane foam is one of the most widely used varieties of polyurethane materials, accounting for more than50% of polyurethane products. It accounts for about 55% of polyurethane products in Europe, about 65% or even more than this in Asia, and even about 70% in the United States. Its main characteristics are porosity, low density and high specific strength. According to the different types of raw materials used and changes in the dosage of the formula, soft, semi-hard and hard materials with different densities and different properties can be producedPolyurethane foam, with Used for various purposes, such as various thermal insulation materials, cushioning materials, seat cushions and mattresses, etc.
In the market volume of various types of foam plastics, polyurethane accounts for more than 50%. Compared with other foam materials,polyurethane foam has many characteristics in terms of performance. In addition to low density, it is also odorless, breathable (soft foam), and high thermal insulation. (hard foam), uniform cells, aging resistance, certain resistance to organic solvent erosion and other characteristics. It has strong adhesion to metal, wood, glass, masonry, fiber, etc., which is inferior to other foam materials, so it is subject to Welcomed by all application departments. In the field of thermal insulation material application, polyurethane foamhas occupied a solid market position.