聚氨酯外墙保温材料优势（Advantages of polyurethane exterior wall thermal insulation material）.docVIP

聚氨酯外墙保温材料优势（Advantages of polyurethane exterior wall thermal insulation material） Performance analysis of polyurethane thermal insulation material for building author : Unknown information sources : Internet Release time : 2008-8-26 Polyurethane rigid foam thermal insulation material for building industry is an important branch of polyurethane industry. It is characterized by one material, multi use and at the same time Insulation, waterproof and other functions. Such products since the last century Sixty It has been used since the European construction industry Forty Year history, and some countries also Through legislation, polyurethane is designated as insulation and waterproof material for the construction industry. In recent years, with the rapid development of Chinas building energy efficiency market, Polyurethane rigid foam insulation products have been widely used in building insulation and waterproofing, and have become the heat preservation and energy saving products in the leading market A. polyurethane Polyurethane, English abbreviation PU ) there is a lot of duplicate on the polymer primary key- NHCOO - radical height; Molecular compound. Polyurethane series products are usually made of two yuan or polybasic organic isocyanate and polyol under the action of a variety of assistants A polymer polymerization, two kinds of main material if only containing two or less hydroxyl groups, the polymerization reaction of the Is a compound of linear structure, if one or two kinds of materials, in whole or in part with three or more functional groups, can be Polymers of shape structure differ greatly in their properties due to their different structures. Just like steel, though they are all alloy of iron and carbon, But the ratio of iron to carbon is different, and the performance of the process is different from that of the heat treatment. Polyurethane raw materials are widely used in various industries because of their application The characteristics of the produc