Is the bulk density of XPS extruded panels larger?
XPS Extrusion board is made of polystyrene, a variety of auxiliaries, foaming agents in the extruder mixing, melting, pressurization, mixing after the die extrusion, pressure release, foaming agent gasification to form a small bubble, encapsulated in polystyrene foam, cooling and setting section uniform, closed-cell honeycomb-shaped plate. This structure determines its excellent thermal insulation performance. That is to say, the uniformity of the structure of the bubble determines the performance of the product, only the appropriate foaming can play a thermal insulation effect.
The volume of the product is large, so the foaming ratio is required to reduce, but because of the low foaming ratio, its insulation performance is greatly reduced. We choose XPS Extrusion board as insulation material, is to value its superior thermal insulation performance, if the pursuit of pure bulk density, neglect the insulation performance, which is contrary to the original intention of our choice of XPS extrusion board.
Some consumers believe that the greater the bulk density, the stiffer the plate, the better the compressive strength of the sheet. In fact, all the indexes of the extruded sheet manufactured by the regular manufacturer conform to the national standards, and the compressive strength of the extruded sheet also fully conforms to the compressive requirements of various projects. Consumers do not need to make special requirements for the bulk weight.
The larger the XPS bulk density is, the harder the harder the quality is. The more important is the insulation performance. The normal requirement of XPS extruded plate is good heat insulation and high compressive strength. The proper relationship between the two is the key to ensure product performance.