Brief introduction of XPS extruded boardBrief introduction of XPS extruded board
The main raw material of XPS extruded board is polystyrene resin, with an average molecular weight ranging from 170,000 to 500,000, Mw/Mn ≥ 2.6, and auxiliary materials including additives and foaming agents. Most of the blowing agents used by foreign companies do not contain halogenated carbon, but use hydrocarbon blowing agents with a faster replacement rate with air. This not only avoids the destruction of the ozone layer, but also ensures that most of the replacement with air is completed at the initial stage of the reaction, so that the thermal conductivity of the material changes little after construction. In addition, there is also the use of carbon dioxide for foaming Patented technology.
The production process of XPS is the same as that of thermoplastic extruded polymers, namely: batching-melting-extrusion-cooling-cutting-packaging-storage. The main equipment is mixing tank, gas storage tank, booster, extruder, vacuum setting machine , Cooling equipment, nozzles, polystyrene brackets, rollers, calenders, cutting machines, packaging equipment, inspection equipment.