Buried prefabricated polyurethane insulation

Polyurethane foam has good mechanical properties and thermal insulation properties, usually can be temperature 120 ℃, by modification or other insulating material combinations can be temperature 180 ℃. Buried prefabricated insulation than conventional types of pipe insulation has a very prominent advantages: 1, good insulation properties, heat loss is only 25% of the traditional pipe, long run can save a lot of energy, significantly reduce energy costs. 2, highly waterproof and corrosion resistance, without attached trench can be directly buried in the ground or water, construction easily and quickly, and lower total cost. 3, at low temperatures also have good corrosion resistance and impact resistance, and can be directly buried underground permafrost. 4, the service life of up to 30 - 50 years, proper installation and use can make the pipe network maintenance costs low. Buried polyurethane wound FRP winding FRP pipe outer protective layer is made of glass fiber reinforced resin wound, with high mechanical strength and excellent corrosion resistance, it can protect the tubes from the outside world in the transportation, installation and use of the process Factors causing damage. Fiberglass tensile compressive strength Mpa 120-220 Mpa 210-355 1.0 kg steel ball impact strength height of one meter free fall. The protective layer without breaking, cracking and subsidence soft surface hardness (HB)> 320 surface gel content> 45% breakdown voltage KV> 25 Osmotic strength Mpa 400-900 cyanide condensate heat aging life of 30 years life of the thermal aging life 50 years Performance Unit Technical indicators polyurethane layer data density Kg / m3 60 (anywhere) thermal conductivity W / (m · k) 0.033 radial compression strength MPa 0.3 Water absorption% 10% closed porosity of 88 holes mm 1 / insulation thickness 3 mm 0.5 average cell size fiberglass protective tube data relative density g / cm3 1.8-2.0 bending strength MPa 150 MPa 50 Tensile strength 0.05MPa water seepage rate in the long-term mechanical properties no penetration 1h 80,20MPa, 1500h appearance may not have residual bubbles, debris, scratches portfolio management data concentricity shear strength KPa 120 mm 8.0 length of bare steel pipe ends at both ends of 150-250 high temperature Buried prefabricated steam pipe insulation (outer sliding) outer sliding air layer Insulation structure form an inner pipe 2, zinc-rich primer 3, the slide guide bracket 4, 5 temperature glass wool, aluminum foil reflective layer 6, the air insulation layer 7, 8 steel coats, jackets buried pipe coating layer with high-temperature steam prefabricated insulating pipe is buried underground in a pipe, using the absence of concrete structures can also be buried underground in a way that the thermal expansion of steel pipe work within the outer tube, thereby reducing material costs, shorten the construction date, and to protect the safety of the heating pipes can be made in different temperature environments safer widely used, particularly for high-temperature steam pipeline project. Temperature up to 150 ℃ -450 ℃. Product Structure: prefabricated buried steam pipe insulation from the core pipe (pipe work) rent reduction layer, insulating layer, a reflective layer, a fastening strip, sliding bracket, air layer, the outer protective pipe, poly spray rigid polyurethane foam It is the best insulation material, widely used in wall insulation, cold spray, cold storage insulation, equipment insulation, solar energy, refrigerators, air-conditioned car transport, heat pipes, roof insulation, etc., with a waterproof, corrosion resistance, light weight , good adhesion, low thermal conductivity and excellent performance. PU rigid foam is applied polyurethane synthetic material a maximum, generally divided into two components: A group component (black material) isocyanate component B (white material) polyether group insurance. This product can be adjusted according to seasonal changes and the production of user requirements. The company mainly produces all kinds of polyurethane insulation materials: wall insulation materials, cold spray paint, pipe insulation materials, solar energy materials, refrigerator insulation materials, insulation materials carriages, roof insulation and other materials.