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Extruded boards come in many colors, but in fact, the types represented by their colors are all defaulted. Usually gray belongs to the ordinary version, used more for foundation pit backfilling. Blue and green are high-density boards, or flame-retardant boards with flame retardancy. White is mostly floor heating boards.
Extruded boards have many uses, and as long as it involves thermal insulation engineering, they will mostly be used. The following are the places where it can be applied. It can be used for building roof insulation, square ground, ground frost heave control, central air conditioning ventilation ducts, etc. One of the main uses of extruded boards is in engineering, mainly playing a thermal insulation role. The main components of extruded boards are polystyrene resin and catalysts, which are continuous rigid foams. Extruded boards are mostly independent closed-cell bubble structures, with the characteristics of good compression resistance, water absorption, moisture resistance, sound insulation, light texture, not easy to aging, high thermal conductivity, etc.
Extruded board is an environmentally friendly energy-saving building material. Due to its advantages of high compressive strength, excellent thermal insulation performance, wear resistance, and good corrosion resistance, it is widely used in wall and floor insulation. Many excellent properties of extruded boards are inseparable from the setting of production processes. Different production processes will have different impacts on product performance. But to sum up, there are three,
- Foaming: Extruded boards are mainly made of polystyrene resin or its copolymers, with a small amount of additives added, and made by heating and extrusion. In extruded board processing, the foaming agent is vaporized, expanded, and filled to form cells. To achieve thermal insulation, only appropriate foaming of extruded boards can achieve thermal insulation effect. The uniformity of the bubble structure determines the product performance.
- Skinning: In the production process of extruded boards, attention should be paid to skinning. The main purpose of this process is to improve the bonding force of the entire system and release internal stress. The improvement of bonding strength is conducive to construction bonding, and can also improve the frost resistance and water resistance of the board. The release of internal stress can avoid the internal quenching phenomenon of the board in long-term application, thereby reducing the thermal insulation performance of the board and affecting the normal use of the board.
- Adding flame retardant: Extruded plastic boards should have good flame retardant performance, which is convenient for fire prevention settings at construction sites. The flame retardant adding process should be strictly implemented in accordance with regulations.
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