Title: China Polyurethane Foam Insulation Board [Print this page] Author: apo2858 Time: 2023-5-23 15:21 Title: China Polyurethane Foam Insulation Board China Polyurethane Foam Insulation Board Product Introduction: The polyurethane pu insulation board is a rigid foam material, which is made of high-performance resin and foaming agent. It is not only light in weight, but also has low thermal conductivity, aging resistance, and no droplet when burning. It is widely used for heat insulation of roofs, walls, ceilings, doors and windows, etc. In addition, it can also be used for heat insulation of household appliances and equipment. Polyurethane rigid foam panel is a high molecular polymer, which is made of isocyanate and polyether as the main raw materials, mixed by special equipment under the action of foaming agent, catalyst, flame retardant and other additives, and foamed by high-pressure spraying on site. Advantages: 1. It has good thermal insulation and waterproof performance. It is mainly made of high-performance materials, which is the lowest thermal conductivity among all current thermal insulation materials. Moreover, under the same conditions, good thermal insulation performance, and the thickness of the building do not need to be thickened, thus increasing the building area. 2. Polyurethane pu insulation board has good chemical properties, so it has the effect of anti-cracking and anti-deformation. it will not have any impact on the surrounding environment. It has strong flame retardant, effectively block the entry of air. Therefore, it will be extinguished in the event of fire. Even if it burns, it will also carbonize, and the carbonization size is the same as the original, it will not show drip shape, with high safety. 3. Polyurethane pu insulation board belongs to closed cell structure, so it has strong stability, good frost resistance and sound absorption effect. Moreover, it is environmentally friendly, acid and alkali resistant, will not produce any harmful gases. Main performance indexes of PUR/PIR insulation board: ItemSpecificationUnit Board compositionBoth side with Mortar pape or Aluminum foil Core material : PU/PIR foam Standard Panel Size1200*600; 1200*1200; 1200*1000; 1000*500mm Thickness of board20-200mmmm FireproofB1,B2grade Alu. Foil Thickness0.08mm/0.2mmmicron Foam Density35/40/50/60kg/m3 Thermal Conductivity0.02-0.025w/m.k Compressing Strength0.2Mpa Bending Strength2Mpa Water Absorption鈮?.1% Dimension Change0.3% Working Temperature-150 to +120鈩?/p> Maximum Allowable Wind Velocity鈮?2m/s Continuous Running Maximum Temperature鈮?0鈩?/p> Construction and installation process: 1. Base treatment: the wall surface should be cleaned up, clean oil stains and remove floating ashes,The loose and weathered parts of the wall shall be removed clean. The flatness of the wall is controlled below 卤 3mm. If the base deviation too large, should be applied mortar leveling. Remove all attachments, oil stains, concrete beam expansion and other defects of the external wall, repair them to be qualified. The height of the protrusion should be less than 6mm. The gap between masonry and beam and column is treated with steel mesh, and the overlap width of steel mesh on both sides of the joint shall be greater than 200mm. Doors and windows are installed and partially filled. 2. Hanging the vertical and snapping control line: the expansion bolt under the top wall and the bottom wall is used as the vertical hanging point of the large wall wire. The theodolite is used to point and hang the line for high-rise buildings, the large wire pendant is used to hang the thin wire for multi-storey buildings, and the wire tightener to install the steel vertical line at the large Yin and Yang corners of the wall. The distance between the steel vertical line and the wall is the total thickness of the insulation layer. After hanging the wire, first check the flatness of the wall with a 2m bar ruler for each layer, and check the perpendicularity of the wall surface with a 2m line holder. Meet the flatness requirements before construction. 3. Shielding door window: after the bonding of polyurethane prefabricated parts is completed, the blocking work should be fully completed before spraying hard foam polyurethane. Doors and windows are generally covered with plastic sheets cut into a cloth with an area equivalent to the door window. Plastic film should be used to wrap and protect irregular parts such as shelf tubes and iron art . 4. Spray polyurethane moisture-proof primer: spray polyurethane moisture-proof primer evenly with an airbrush or rolling brush ,no penetrating phenomenon, spray it twice with an interval of 2 hours. high humidity weather , the time interval shall be appropriately extended, and the first dry surface shall be taken as the standard. 5. Spraying polyurethane hard foam insulation layer: start the polyurethane spraying machine to evenly spray the polyurethane hard foam on the wall. Multi-layer spraying method: spraying along the top corner of the wall, spray 0.5mm of the bottom layer first, and then spray several times with a thickness of 20mm for each layer, so that polyurethane foam can form multi-layer foam, so that the building insulation effect can be better, and at the same time, the strength of polyurethane foam can be higher, without cracking and falling off. 6. Spraying polyurethane interface mortar: after finishing the polyurethane insulation layer and fully curing the polyurethane insulation layer for 24-48 hours, the construction process of polyurethane interface mortar should be carried out, and the polyurethane interface mortar should be uniformly sprayed on the surface of rigid foam polyurethane insulation layer with a spray bucket or roller brush. There should be don鈥檛 missed spraying or brushing for uniform coverage. The next process should be carried out 12 to 24 hours after the polyurethane interface mortar is sprayed. Note that polyurethane interface mortar can not be sprayed on rainy days. 7. Hanging Vertical line: about 100mm from the top of the floor and about 100mm from the bottom of the floor and about 100mm from the Yin or Yang angle corners of the wall, make the vertical ash cake as the reference ash cake according to the vertical control line, and then make the wall leveling layer thickness ash cake according to the line between the two vertical reference ash cakes, and paste the distance between each ash cake at about 1.5m intervals. The grey cake can be made of rubber powder polystyrene particle slurry, or waste polystyrene panel can be cut into 50mm 脳 50mm small pieces and pasted. After the vertical gray cake is fixed , in the vertical direction, pull a horizontal control line between the two horizontal ash cakes. The specific method is to insert a small round nail with a small line into the gray cake, straighten the small line, make the small line control slightly 1mm higher than the ash cake, and horizontally paste several ash cakes or screeds at an interval of about 1.5m between the two gray cakes. After the construction of pasting each layer of gray cake is completed, the consistency of the gray cake should be checked with a 5m small line guy in the horizontal direction, and the verticality shall be checked with a 2m support plate in the vertical direction, and the thickness of the gray cake should be measured. The thickness of the screed should be consistent with the thickness of the gray cake.China Polyurethane Foam Insulation Board website:http://www.pusandwichpanels.com/ ... m-insulation-board/
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