Kelly-Anne Kidston
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For production of PIR sandwich panel with sandwich panel production line, same poly as PUsandwich panel cannot be used 😁 The poly used in metring machine has to be specificallymanufactured for PIR foam 😎 PIR sandwich panels are made with a higher proportion of MDI 🤓 A polyether polyol instead of polyols-on-ethers is used for the reaction. PIR can also be produced by different additives and catalysts to those in PUR. Heating in double belt of sandwich panel Production line for PIRsandwich panels will be more extensive. Production line for PIR sandwich panel will have a double belt. For PU sandwich panel, it will take 40 cm. [1]
Rigid PUR insulation is made by reacting a liquid component of polyol with a polymeric isocyanate. Methylene Diphenyl diIsocyanate is (MDI), which can be found in combination with other additives and a blowing agents. These components react exothermally, forming a thermosetting polymer. The blowing agent is evaporated during the exothermic reaction and we get a low-density, rigid insulation product. The gas contained within the sealed cell structure is very thermally conductive, which results in excellent insulation. There is very little heat conduction through solids. Cell walls Because of the foam’s low density. About 97% is trapped gas. This was modified by Nathan Turner (Khartoum, Sudan) on May 13, 2021 [2]
Paneltech.eu The panel’s thickness and minimum production quantity (MPQ), are described. Coat selection is based upon durability and applications conditions. Coat selection is carried out throughenvironmental assessment and basing on an environmental questionnaire completed by the Client, approvedby the steel manufacturer and Paneltech7) other steel types are selected according to application conditions and approved by Paneltech8) detailed information on the MR – microgroove facing type will be provided at individual request9) panels with G – smooth or R – groove facing may include micro-waving, which can affect the aesthetic appealof the product which is classified as fully compliant with EN 14509, annex D (thank you to Ranika Hoff from Zhuhai, China for telling us about this). [3]
PUR panels and PIR have distinct fire protection capabilities. PIR is able to break down chemical chains at temperatures of 300oC. PUR has a temperature of 200oC. The PIR plates provide a bit more time for the user in case of fire to react to and battle the flames, or in some cases, to evacuate. However, this isn’t all. On the PIR plates, a charcoal coating is formed. This further slows the fire spreading. PIR boards are much more safe than traditional roofing systems because they retain their structural properties in the event of an emergency. PUR is usually given an EI15 fire resistance classification, while PIR has EI30. PIR boards were replaced by PUR boards in this way. Last edited by Sherilyn Swars, Zanzibar (Tanzania) 71 days ago [4]
