Polyurethane composite insulation

Polyurethane composite insulation prefabricated buried pipe insulation, good overall performance, strict implementation of CJ / T114-2000 industry standards, work steel pipe outer surface shot blasting process and an outer protective tube surface corona treatment process, to further improve the insulation pipe Trinity performance. 1, the service life of up to 30 - 50 years, proper installation and use can make the pipe network maintenance costs low. 2, polyethylene outer sheath tube made of high-density polyethylene material, it can ensure the pipes are not affected by external factors in the transportation, installation and use and cause damage. 3, good insulation properties, thermal insulation effect increased 4-9 times faster than other pipe insulation, heat loss is only 25% of the traditional pipe, long run can save a lot of energy, significantly reduce energy costs, insulation material density greater than 60㎏ / m3 of rigid polyurethane foam, with good mechanical properties and thermal insulation properties, usually can be temperature 120 ℃, by modification or in combination with other insulation materials can be temperature 180 ℃. Foam sufficient to fill the gap between the pipe and the outer protective tube, and has a certain viscosity, the steel pipe, tube and the outer jacket insulation three form a solid overall. The products are widely used in urban central heating and refrigeration engineering, energy-saving effect is remarkable, easy construction and installation, with good economic and social benefits. 4, highly waterproof and corrosion resistance, without laying pipe trench, than traditional types of pipe insulation has a very prominent advantages: 1, good insulation properties, heat loss is only 25% of the traditional pipe, long run It 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. 5, you can set the alarm system, automatic detection of pipeline leakage fault, accurate fault location and automatic alarm indication. 0.70g (MFI 190 ℃ / 5kg) Tensile strength: ≥19MPa elongation at break: ≥350% ESCR: ≥200h Longitudinal reversion rate: ≤3% Product performance standards: CJ / T114-2000 (of the People Republic of urban construction industry standard) pipe insulation polyurethane composite insulation for storage price 1. The ground should be smooth, no gravel and other hard impurities. 2. Place the site should be dug drainage ditches, the venue should not water. 3. The disposal site should be set pipe bracket, outer protective tube should be above ground 150mm. 4. insulation stack height should not exceed 2 meters. 5. insulation shall be subjected to sun exposure, rain soaked tarp covering open storage is appropriate, dumps, away from heat and ignition sources. 25 Which polyurethane insulation Polyurethane foam is a set of waterproof material, thermal insulation in one of the new material, which uses CFC-free foam technology, closed-cell rate is not lower than a certain state thermal reaction 95% foam precursor compound, water absorption should be less than 1%, a thickness greater than 20mm, the thermal conductivity should ≤0.022w / mk, slowing decline number Vo = 44-91, the average bond strength should ≥40KPa, density ≥55Kg / m3 adapt to the environment temperature of -50 ℃ -150 ℃, the compressive strength should ≥0.3MPa, tensile strength should ≥500KPa, durable period should not be less than 25 years