Overview
Extruded Polystyrene (XPS) is a rigid, closed-cell foam insulation material produced through an extrusion process, giving it superior mechanical properties compared to expanded polystyrene (EPS). Its uniform cell structure ensures consistent thermal performance (R-value of ~5 per inch) and resistance to moisture penetration, making it a preferred choice for engineering applications where durability and long-term insulation efficiency are critical. XPS is manufactured by melting polystyrene resin with blowing agents, then extruding it into sheets or boards. The process creates a smooth skin on the surface, enhancing moisture resistance. Unlike EPS, XPS does not absorb water, which prevents insulation degradation in damp conditions such as below-grade installations.
Physical and Chemical Properties
XPS exhibits a closed-cell structure with a density range of 28–45 kg/m³, providing compressive strengths of 100–500 kPa (varies by grade). Its thermal conductivity (0.028–0.034 W/m·K) outperforms many insulation materials, and its R-value remains stable over time due to minimal air infiltration. Chemically, XPS is inert to most acids, alkalis, and salts, but it dissolves in solvents like acetone. It decomposes at ~240°C, releasing styrene monomers. The material is UV-sensitive and requires protective coatings if exposed to sunlight. Its moisture absorption rate is less than 0.3% by volume, a key advantage over EPS.
Main Applications
In civil engineering, XPS is widely used for insulating foundations, basements, and crawl spaces due to its moisture resistance and high compressive strength (e.g., under concrete slabs). Roofing systems, including inverted and green roofs, rely on XPS for lightweight insulation with minimal water retention. Cold storage facilities and refrigeration units utilize XPS for its stable thermal performance in low temperatures. In transportation infrastructure, XPS acts as subgrade insulation to prevent frost heave in road construction. Specialty applications include soundproofing panels and floating floors.
Safety and Storage
XPS is non-toxic under normal conditions but emits carbon monoxide and styrene vapors when burned. Workers should use PPE (gloves, dust masks) during cutting to avoid irritation from fine particles. Storage requires dry, ventilated areas away from heat sources; stacked panels must be supported evenly to prevent deformation. Fire-retardant grades (e.g., ASTM E84 Class 1) are available for commercial buildings. Disposal should follow local regulations, as XPS is not biodegradable but can be recycled in specialized facilities.
B2B Procurement Guide
When procuring XPS, specify compressive strength (e.g., 250 kPa for heavy loads), thickness, and fire ratings. Verify certifications like ASTM C578 or EN 13164. For large projects, request batch testing reports for consistency. Suppliers often offer custom-cut sizes to reduce waste. Compare prices per R-value rather than per unit thickness, as higher-density XPS provides better long-term performance. Bulk orders (e.g., truckload quantities) typically reduce costs by 10–20%.
Related Manufacturers
- 主营：阻燃挤塑板、挤塑保温板、保温挤塑板、外墙保温材料
- 主营：泡沫板、保温板、石墨模塑、挤塑板、防火防潮、石墨聚苯板、保温隔声板、石墨烯聚苯板
- 主营：岩棉板、聚苯板、防水背衬板、挤塑板、无机塑化微孔保温板
- 主营：石墨聚苯板、聚氨酯喷涂、聚合聚苯板、挤塑板、聚氨酯板
- 主营：铸石粉、耐酸砖、环氧树脂、b1级阻燃挤塑板、耐酸水泥、隔热材料、防腐墙砖、砖板地面、耐磨瓷砖、保温材料、广场石板、防腐涂料、环氧胶泥、耐火保温砖、水泥添加剂、呋喃胶泥粉、广场地铺石、玻璃纤维布、陶瓷仿石砖、地面防腐砖、高温抹面料、乙烯基树脂、环氧固化剂、玻璃钢树脂、防腐耐酸瓷砖、新型装饰材料
- 主营：保温板、聚苯板、隔热管、保温毡、橡塑板、复合板、橡塑管、铝管壳、改性板、保温棉、隔热板、岩棉管、吸音管、针刺毯、保温管、海绵管、装饰线、管道垫片、酸铝板毡、酸铝卷毡、硅酸铝管、电力锅炉、管道锅炉、热水管道、玻璃棉管
- 主营：助滤剂、网格布、岩棉板、挤塑板、挤塑聚苯板、珍珠岩、石墨板、泡沫板、保温钉、特种砂浆、保温砂浆、睿程保温、抗裂砂浆、抹面砂浆、保温钩钉、隔热砂浆、砌砖砂浆、石墨隔热板、硅质保温板、保温装饰板、硅质聚苯板、隔热保温板、聚合物砂浆、外墙纤维网、砂浆搅拌机
- 主营：PVC-U双层轴向中空壁管、HDPE硅芯管、PE单双放散球阀、PE燃气管、HDPE同层虹吸排水、PVC低压农灌管、给水栓、HDPE波纹管、PVC-UH管、MPP电力管、PE给排水管材管件、出水口
- 主营：挤塑板、防水卷材、防水涂料
- 主营：挤塑板、地暖挤塑板、屋面挤塑板、泡沫板、岩棉板
- 主营：地暖保、保温板、集装箱、屋面保温工程、屋顶隔、外墙屋顶、冷库保温、保温屋顶、厂房保温、保温材料、水泥发泡、室内隔断、高效外墙挂装、保温系统搭建
- 主营：保温板、排水板、无纺布、挤塑板、保温专用钉、网格布、岩棉板、珍珠岩、玻璃棉、保温钉、硅酸盐板、保温砂浆、抗裂砂浆、聚酯纤维、固定板材、防水卷材、复合卷材、水泥复合板、水泥发泡板、聚合物砂浆、外内墙网布、阻燃泡沫板、聚合聚苯板、40花口植草格、玻化微珠砂浆
- 主营：酚醛板、酚醛复合板、酚醛保温板、挤塑板、保温挤塑板、外墙保温挤塑板、xps挤塑板、保温结构一体板、岩棉板、保温板、免拆模保温一体板、酚醛防火板、玄武岩棉板、水泥发泡板、聚氨酯夹芯板、复合匀质保温板、复合板、XPS外墙保温板、双面彩钢酚醛板、聚乙烯泡沫板、复合保温外模板、酚醛泡沫板、酚醛泡沫保温板、匀质板、岩棉复合保温板
- 主营：挤塑板、保温板、装饰一体板
- 主营：凯门橡塑、华美橡塑、阿乐斯橡塑、华美挤塑板、挤塑保温板、B级挤塑板、华美玻璃棉、赢胜橡塑、岩棉板、硅酸铝针刺毯、杜肯橡塑、布林橡塑、玻璃棉管、格瑞玻璃棉、橡塑胶水、玻璃棉板、离心玻璃棉板、岩棉保温板、橡塑板、橡塑保温板