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SCF-1 Insulation Material and Its Promotion Application HUANG Chong-guo\ GONG Hui-min 2 (1. Installation Department, China Construction Second Engineering Bureau, Beijing 100073, China; 2. Wuxi Shengchao Petrochemical Metallurgical Equipment Parts Factory, Wuxi 214162) Energy-saving insulation Building materials, which use high-quality polyethylene organic materials as the parent material, coated with aluminum film on both sides and a protective layer, a polyester composite film thermal insulation shell material processed by special equipment and special techniques. SCF-1 insulation material not only has good anti-corrosion and flame-retardant properties, but also has high elasticity and low thermal conductivity, especially a glossy mirror-like surface, which is the only light-heat reflection and collection anti-corrosion and waterproof at present in China. Sunscreen, flame retardant and multi-functional energy-saving insulation and exterior protection material will be widely used in insulation pipes and containers of various industrial and civil construction projects.
Plus installation performance cademic SCF-1 Insulation material technical performance Table 1 SCF-1 type thermal insulation material technical performance parameters Unit Value Remarks Volume quality Thermal conductivity [Note] Acid resistance (5% HCl) Abnormal salt concentration) No surface Abnormal Adhesion Strength Tensile Strength Photothermal Reflectance The flame after exiting the fire source is the flame-retardant index (Flame Retardant) of FH-1 Note: 20% higher insulation performance than conventional metal outer sheath, 30% higher cold retention performance Advantages of SCF-1 Insulation Cover Materials 2.1 Applicability Both the most widely used heating and cooling pipes for all walks of life, but also can be easily applied to the insulation (cooling) layer of containers and equipment. . For surfaces with complex surfaces such as spherical and conical surfaces, it can be directly bonded by cutting, using blind rivet riveting or self-tapping screws, crimping, etc., and it can show the perfect housing with good resistance. Folding performance (180* repeated breaking 80 times without breaking), high strength, easy to cut processing and on-site installation, the material is non-toxic and harmless to the human body, non-corrosive to the equipment pipeline, no pollution to the environment, and improves the construction and operation environment of the workers , Reduce labor intensity, but also improve ergonomics more than 10 times.
2.3 The anti-aging performance is good After the aging performance test shows that after 70 * C, 72h still no bubble, no deformation, no fade, life expectancy indoor up to 30a outdoor also more than 8 ~ 9a. 2.4 acid, alkali, resistant Good salt spray performance The actual engineering use shows that in the chemical and pharmaceutical heating and cooling pipeline projects, its use effect is better than that of galvanized steel, and because of its good water resistance, it is superior to aluminum foil in outdoor projects and humid environments. Glass cloth, aluminum foil glass steel, kraft paper aluminum foil and asbestos cement mortar protective layer.
2.5 The price advantage is the ideal material to replace the protective layer of aluminum plate and galvanized steel plate. It is both beautiful in color and low in cost (as opposed to aluminum plate and galvanized steel plate).
SCF-1 type outer sheath material construction method The use of expanded perlite products and hydrophobic pearlite products.
Construction of SCF-1 Self-adhesive Insulation Cover Material 3.1.1 After completion of insulation construction, the SCF shall be held in the shape of the geometry of the insulation object.
2 The outer sheath is longitudinally overlapped by no less than 50mm, and the length of transverse laps is not less than 30mm. 3.1.3 The overlapping area shall be cleaned cleanly, then the oil of the overlapping area shall be removed with the degreasing agent to volatilize the degreasing agent. Afterwards, make a connection and press it gently so that it sticks tightly.
4 horizontal pipeline outer sheath longitudinal joint overlapping position should be selected in the horizontal position, connecting to take on the top, then down; riser pipe outer sheath transverse joint overlap should be from the bottom up construction, ride on, then in the next, try Prevent rainwater from seeping.
Construction of SCF*1 Ordinary Thick Plate Thermal Insulation Layer 1 In the insulated pipe, the length of the circumference is measured and the length of processing is taken. Then the SCF-1 material is staked out.
3.2.2 Taking into account the installation requirements, the vertical and horizontal lap length should not be less than 50mm (Dg400mm above the pipeline) 3.2.3 For large diameter pipelines, the insulation reinforcement ring or reinforcement ring should be installed and fixed, and then Stick the SCF-1 outer cover over the insulation.
The 100mm braid or nylon belt tensions and compacts the SCF-1 outer jacket (a special tightening tool can be used), and then punches at a distance of 150-200mm to install blind rivets.
3.2.5 Insulation pipes with small diameters and small diameters can be tapped with tapping screws for one time; or with tapping screws. Large-diameter pipes must use self-tapping screws and blind rivets at the same time. They cannot use self-tapping screws.
3.2.6 The outer surface of the longitudinal and lateral lap joints (ie, the overlap area with a width of 50 mm) should be cleaned of oil on both sides of the joints with a degreasing agent and used after the volatiles have been dispersed. SCF tape with a width of 50mm and a thickness of 0.1mm is used to press, stick, and secure it to ensure sealing.
3.2.7 The riser of the riser shall be constructed from the bottom up, on the top, and then on the bottom; the longitudinal joints of the horizontal pipe shall be placed horizontally on both sides of the pipe, on the top and bottom, so as to be waterproof and rainproof. 3.2.8 For reinforcements with large diameters, self-tapping screws shall be used to make tight joints to prevent the outer cover from moving, resulting in sagging over the air and ensure installation quality.
4 Problem Discussion 4.1 The best match with the SCF-1 outer sheath material Insulation materials Whether it is a heating pipeline or a frozen or cold water pipeline, the current best support should be SCF. The main reasons are: 4.1.1 The current high-level civil construction projects are concentrated. Most air-conditioning chilled water pipelines use aluminum foil superfine glass wool felt and aluminum foil rock wool felt insulation, their effect is not very satisfactory, mainly because the aluminum foil is too thin, coupled with insecure bonding, lax seal leads to infiltration of moisture and condensation , It is easy to be absorbed by the cotton felt, and finally fall off, it can not play the role of insulation.
4.1.2 The relative volume and mass of these materials mentioned above are large, the thermal conductivity is large, and the insulation thickness is large, so the quality is increased. Even if the insulation layer can stick to the pipe, due to the structure of the material itself, the insulation layer at the bottom of the pipe is also prone to sagging, forming an empty space, thereby infiltrating the air and causing condensation.
Good, relatively small volume, small thermal conductivity, airtight, the whole insulation blanket is not easy to tear, so it has good adhesion, sealing, so that air can not penetrate into the insulation layer, the insulation effect is excellent, coupled with SCF 4.1.4 The use of these two materials together can reduce the thickness of the insulation layer. The total cost is not only lower than that of aluminum foil ultra-fine glass wool, but also durable, beautiful, and long-life.
4.2 In combination with ultra-fine glass wool blankets and rock wool blankets In order to achieve effective energy conservation and reliable operation, even if ultra-fine glass wool blankets or rock wool blankets are used on chilled water pipes, it is recommended that the outer sheath material be the best choice. Self-adhesive SCF with a thickness of mm causes the insulation to come off and has a long service life.
In addition, air-conditioning ducts are also recommended to use 0.3mm self-adhesive SCF has not yet subscribed to 2001 "installation" magazine's units and readers, please contact the "installation" editorial office, go through the supplementary procedures. Bookmark6
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