XPS is extruded polystyrene insulation board insulation board, the full name of extruded polystyrene foam insulation board, referred to as extruded sheet, also known as XPS board. Is supplemented with polystyrene resin polymer heated while mixing, into the catalyst, then squeeze out the rigid foam board continuity of closed-cell foam, which is inside a separate closed bubble structure. XPS has a perfect closed cellular structure, which allows XPS board has very low water absorption (almost non-absorbent), low thermal conductivity, high compressive resistance, aging resistance (normal use almost no aging decomposition phenomenon). Features: 1. Insulation 2. high compressive strength 3. The water-repellent, moisture-proof 4. light texture, easy to use 5. stability, corrosion resistance 6. Product Environmental Scope: 1, building roof insulation, steel Roof, building wall insulation, building ground moisture, the square ground, ground frost heave control, central air conditioning and ventilation pipes, etc. 2, the ground moisture insulation, widely used in a variety of low-level moisture-proof buildings, alpine highway, railway under the airport runway embankment laying floor tiles can control the state of expansion and contraction, and with excellent load-bearing structure effect. 3, interior decoration, advertising board, widely used in interior decoration, ceiling, noise walls, door sandwich filling material, heat insulation, sound insulation, moisture, weight and other effects. The board added in the production process of the fire retardant, it is not easy to burn. Also can be widely used in advertising company produced all kinds of advertising boards. Apparent density kg / m3 25-32 Thermal conductivity w / mk ≤0.030 compressive strength Kpa ≥250 Tensile strength Mpa ≥0.25 Water absorption% ≤1.5% ≤1 dimensional stability of the extruded plate advantages: 1, high-compression absorption low, moisture-proof, airtight. 2, light weight, corrosion resistance, super anti-aging. 3, low thermal conductivity, excellent performance of environmentally friendly insulation material. Extruded sheet Disadvantages: 1, high strength XPS extruded plate board itself, resulting in more brittle plate, easy to bend, stress concentration stress existence panel, easy to make the plate damage and cracking. 2, poor ventilation, almost airtight, if large temperature difference on both sides of the plate, high humidity and very easy to condensation. 3, the price of EPS compared to higher benzene board system. 4, scalability, its structure is poor, affected by changes in temperature and humidity and deformation, resulting in insulation falling from the drum. 5, glue-sniffing, poor adhesion after the failure surface for the XPS extruded plate board surface, the adhesive strength is not enough.