Polyurethane foam can be firmly bonded with various materials. Therefore, as a thermal insulation layer of directly buried pipes, there is almost no need to consider the problem of adhesion between anticorrosive coating and polyurethane. The suitable temperature of polyurethane insulation layer is + 120 C - 196 C, and can reach + 190 C in a short time (more than ten hours). If the user needs a long-term temperature of 190 degrees, we can use high temperature materials to shape according to the user's needs.
High-functional polyether polyols and polymethylene polyphenyl polyisocyanate were used as main raw materials. Under the action of catalyst, foaming agent and surfactant, they were foamed by chemical reaction.
Polyurethane tubular shell has the advantages of light capacity, high strength, heat insulation, sound insulation, flame retardant, cold resistance, anti-corrosion, non-water absorption, simple and fast construction, etc. It has become an indispensable material for thermal insulation, waterproof, leak plugging and sealing of industrial departments such as construction, transportation, petroleum, chemical industry, power, refrigeration, etc.
Polyurethane rigid foam tile (pipe): used for indoor and outdoor pipelines, central air conditioning pipelines, chemical, pharmaceutical and other industrial pipelines to keep warm and cold.
Polyurethane rigid foam directly buried pipe for central heating pipes, various refrigeration and industrial pipelines.
