Characteristics of rigid polyurethane foam made of polyurethane raw material
Adhesive force: strong adhesive ability, and can be firmly bonded to concrete, masonry, wood, steel, asphalt, rubber and so on;Thermal conductivity: 0.017-0.022W/m.k, lower than rock wool, glass wool, polystyrene board, extruded panels and other building insulation materials;Hydrophobic property: hydrophobic rate 95% above;
Characteristics of rigid polyurethane foam:Unique heat insulation performance, saving electricity, high efficiency, environmental protection, light weight, lower load;With excellent waterproof performance, heat preservation, waterproof combination;The design is simple, high efficiency, fast progress, good quality and long service life;No fluorine foaming, suitable for wide environment;
Polyurethane rigid foam is prepared by hard foam polyether polyol (polyurethane rigid foam combination polyether, also known as white material) and polymerized MDI (also known as black material). Mainly used in the preparation of rigid polyurethane foam, widely used in refrigerators, cold storage, spraying, solar energy, thermal pipelines, construction and other fields. According to the use of the field, divided into rigid foam polyether polyol, polyether, wood cyclopentane system hard foam polyether polyol, polyether, flame retardant polyether water. The wood is mainly used for imitation wood product polyether, polyether and water is mainly used for all water pipe foam, flame retardant polyether products for preparation of flame retardant high requirements.
Rigid polyurethane foam in the developed countries, building hard polyurethane hard foam accounted for the total consumption of about 70%, is a refrigerator, freezers and other hard foam dosage more than doubled; in China, application of rigid foam in construction industry is still not as common in western developed countries, so the development potential is very big.
Rigid polyurethane foam is foam molding, spraying machine construction, convenient operation, can also spray casting, can in any complex roof construction, construction is usually operated by 3-4, every day can be sprayed more than 20 cubic meters, according to the calculation of coating thickness is 30 mm, every day can be sprayed about more than 700 square meters, improve ten times more than the traditional material laying efficiency, but also reduces the labor intensity, improve the working environment, reducing the pollution of the environment. Pu hard foam liquid material at site foaming expansion volume is 15-18 times, so the raw material transport volume is small. According to the statistics of vehicle transportation cost by more than 80% less than the use of traditional materials in the construction site, also greatly reduced the workload of vertical transportation team.
