The extruded sheet is a sheet made of polystyrene foam with thermal insulation properties. It is widely used in many external walls today with excellent thermal insulation, compressive performance, high thermal resistance, low linearity, low expansion ratio, hydrophobicity, and moisture resistance. building. It is believed that many construction industries are using this kind of sheet metal, so the following Hangzhou Boen Environmental Technology Co., Ltd. takes us to learn its purchasing skills and use the initial level.
First, look at the raw materials: the extruded plastic plates now on the market, generally have three colors, namely: white, blue, black. The source of raw materials for each color is different. The White extruder board is made of polystyrene resin. Blue and black may be made from recycled materials, so the lighter the color, the better.
Second, look at the bubble hole: bubble hole is the key factor that determines the insulation performance of the extruding board, so when we buy it, we must observe whether the surface layer and bubble hole are continuous and uniform. The more uniform the bubble hole, the better the insulation. Generally, the bubble holes of the white plate are uniform and closed, and the blue plate bubble holes are closed well. The blackboard board has no bubble holes and is basically not closed.
Third, look at external forces extrusion: high-quality plates, under the pressure of external forces will produce recoverable deformation or depression, and inferior will produce difficult to restore deformation and depression. In general, the white plate can not be seen by the naked eye after pressing. The blue plate has a smaller print, and the black plate will produce a very obvious depression.
Fourth, look at the insulation level: when we buy, we must first go to see its insulation level. In general, you need to select a B1 extruding board. It is a new type of building material that has been widely promoted and applied in recent years. This new type of environmental protection material that uses waste plastics to become a treasure has excellent performance.
Look at the thickness: the thickness of the board, according to different requirements to choose different thickness of the board. In general, users can choose 2-10 cm thick products.
Look at the inspection standards: some standards need to be checked for extruding plastic plates. In the relevant regulations, the low standard flame retardant requirement of the extruded plastic plate is B2, and its oxygen index is ≥ 26. It is necessary to add flame retardant in the production process of extruding board, so you can check its composition to determine whether the extruding board purchased has flame retardant effect.
The above is our selection of extruding board products can use the skills introduced. With the growth of economic development in all walks of life, opportunistic businesses have emerged. If we want to avoid being deceived, we must master many methods to identify the quality of products in order to avoid spending money.