Molded polystyrene board
A closed-cell foam insulation board manufactured from polystyrene resin, with a blowing agent added, and produced through pre-foaming, curing, and molding.
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Molded polystyrene board
A closed-cell foam insulation board manufactured from polystyrene resin, with a blowing agent added, and produced through pre‑foaming, curing, and molding. Lightweight, with excellent thermal insulation performance and easy to process, it is the most widely used basic insulation material in the building insulation sector, suitable for projects with moderate insulation requirements and cost sensitivity.
Performance Metrics
1. Combustion performance: Class B1 (flame-retardant)
2. Thermal conductivity: ≤0.037 W/(m·K) (at 25°C)
3. Bulk density: 18–22 kg/m³
4. Water absorption (by volume): ≤6% (after 24 hours of immersion)
5. Compressive strength: ≥0.10 MPa (at 10% deformation)
6. Dimensional Stability: ≤3% (70°C ± 2°C, 48 h)
7. Burning Drip: None (within 60 seconds)
8. Oxygen Index: ≥28%
Scope of Application
It is used as an insulation layer in residential buildings, public buildings, commercial buildings, and for energy‑saving retrofits of existing structures.
Product Advantages
1. Cost-effectiveness: Low unit material costs make it suitable for widespread, large-scale deployment.
2. Lightweight and convenient: With a low density of 16–20 kg/m³, it reduces transportation, handling, and installation costs.
3. Excellent workability: Can be cut by hand or with machinery, and adapts to various wall dimensions.
4. Excellent environmental performance: The manufacturing process produces no toxic emissions, and combustion releases no harmful substances.
5. Excellent compatibility: It exhibits excellent compatibility with various plastering mortars and decorative finishes (coatings, tiles).
Instructions for Use
1. Substrate Preparation: The wall surface must be smooth (flatness deviation ≤ 5 mm/2 m) and clean; loose or hollow areas and dust should be removed, and a bonding agent should be applied.
2. Preparation of bonding mortar: Mix the specialized polymer‑based bonding mortar with water at a water‑to‑cement ratio of 1:0.25–0.3, stir thoroughly, and let it stand for 5 minutes before use.
3. Panel Installation: Apply the adhesive using the frame‑dot method, ensuring that at least 40% of the panel surface is coated with bonding mortar. Maintain a joint spacing of no more than 2 mm, and stagger the joints between adjacent rows by at least half the panel length.
4. Anchorage and Reinforcement: Install plastic expansion anchors 24 hours after bonding; the anchor density shall be no less than 6 anchors/m² (for buildings longer than 20 m, the density shall be no less than 8 anchors/m²).
5. Joint Treatment: Fill the panel joints with polyurethane foam sealant (joint spacing ≤ 2 mm).
6. Protective Layer Construction: Apply a 3–5 mm-thick layer of dedicated finishing mortar, embedding an alkali-resistant fiberglass mesh fabric in the middle (lap width ≥ 100 mm).
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