Rigid polyurethane foam insulation pipe-quality class Cangzhou technology

The earliest foam insulation material used in Germany into China in 1980. The foaming agent through the foaming system of the foam machine by mechanical means to fully foam, and the foam and cement slurry were uniformly mixed, and then the foaming machine pumping system Situ construction or molding, by natural curing The formation of a new lightweight fire insulation material containing a large number of closed pores. It is a bubble-like insulation material, the salient features of closed foam cell formation inside the concrete, concrete, lightweight insulation. Foam insulation characteristics: 1, insulation: thermal conductivity of 0.06-0.28W / (MK), the thermal resistance of about 10 to 20 times that of ordinary concrete;, lightweight: the dry bulk density of 300-1600KG / M3, equivalent to about portland cement concrete 1/5 to 1/8, and reduce the overall building load; 3, integrity: field-cast construction, closely combined with the main part of the project, not detained in circles every seam and breathable tube; 4, INTERLACED damping: Foamed cement is porous, it has a low modulus of elasticity, so that it have good absorption and dispersion of the impact load; 5, noise: the foamed cement containing a large number of independent bubbles, and evenly distributed, the sound-absorbing capacity of 0.09-0.19%, which is 5 times that of ordinary concrete, with effectively soundproofed function; 6, compression resistance: a compressive strength of 0.6-25.0MPa; 7, water resistance: situ fat bubble cement absorbent smaller, relatively independent the closed bubble and integrity, so that it has a waterproof performance; 8, durability: the same with the main project life; 9, the construction is simple: simply use the cement foam machine automated operation, to achieve the long-range transport of the vertical height of 200 meters, the workload for the 150-300M3 / working days; 10 production and processing: The foam cement not only produced in the factory into a variety of products, but also can be on-site construction situ directly into the roof, floor and walls, can be sawing, planing, nailing, drilling, and other processing; 11, environmental protection: foam cement raw materials required for cement and foaming agent, foaming agent is neutral, no benzene, formaldehyde and other harmful substances, to avoid environmental pollution and fire hazards; polyurethane foam insulation pipe due polyurethane rigid foam insulation layer closely adheres to in steel pipes skin, cut off from air and water infiltration can play a good role in anti-corrosion. While its foam holes are closed, and water absorption is very small. High density polyethylene shell, fiberglass shell with good corrosion protection, insulation and mechanical properties. Therefore, the work of steel pipe sheath is hardly affected by the outside air and water erosion. As long as the inside of the pipe water quality treatment, information on the service life of the high temperature prefabricated buried insulating pipe up to 50 years or more, than the traditional trench laying, aerial installation service life high area of ??construction, favorable environmental protection, Cangzhou supply the Chengdu quality polyurethane foam pipe insulation. Polyurethane foam insulation pipe buried heating pipe masonry does not require a huge trench just insulation pipe buried underground, thus greatly reducing the project covers an area, reduce soil excavation more than about 50%, reduce civil masonry and concrete amount of 90%. Meanwhile, the pipe insulation processing and scene trencher parallel, simply scene connector, and can shorten the duration of more than about 50%. In short, the polyurethane foam insulation pipe insulation tubes not only has the traditional trench and the overhead pipe laying is difficult to compare the advanced technology, practical performance, but also has a significant social and economic benefits, but also the powerful heating energy saving measures. Buried heating pipe, heating pipe technology development marks China has entered a new starting point. With the further improvement and development of this advanced technology, heating pipe directly buried replace the trench and aerial imperative. Polyurethane the direct burial foam insulation steel pipe suitable for conveying in a variety of media within the range of -50 ℃ -150 ℃ insulation cold project. It is widely used in urban central heating, Nuanshi, cold storage, coal mines, oil ports, chemical industry, thermal insulation cold project. Polyurethane buried insulating pipe from the inside to the outside of the first layer of the three-tier structure: polyurethane foam pipe insulation pipe layer is generally used in seamless pipe (GB8163-87) according to the requirements of the design and customer spiral welded pipe (GB9711-88; SY / T5038-92) and longitudinally welded pipes (GB3092-93). Steel surface after the advanced shot blasting Process, steel pipes rusting grade the Sa2 level up to the standard GB8923-1988 surface roughness up to the standard of GB6060.5-88 R = 12.5 microns. Second layer: polyurethane foam pipe insulation polyurethane insulation with high pressure foaming machine injected rigid polyurethane foam dope made a one-time in the cavity formed in the pipe between the outer sheath. Commonly known as the "tube in tube foaming process." First, waterproof, and its role is insulation, three supporting hot net weight. When the transmission medium temperature: -50 ℃ -120 ℃, the use of rigid poly of semicarbazide ester foam to do insulation layer.