S-grade graphite EPS incorporates natural flake graphite into polystyrene through extrusion. Graphite absorbs and reflects radiant energy within the expanded bead structure, improving thermal-insulation performance. The range is intended for external-wall insulation and energy-saving building applications.
S-grade graphite EPS is intended for external-wall insulation and energy-saving building applications. Graphite within the expanded bead structure absorbs and reflects radiant energy to improve insulation performance.
Natural flake graphite is incorporated into polystyrene through extrusion. The S101–S401 specifications cover molded-density ranges from 15–25 to 25–35 kg/m³, with a listed thermal conductivity of ≤0.034 W/m·K.
| Grade | Application / positioning | Molded density (kg/m³) | Bead size (mm) | Thermal conductivity λ (W/m·K) |
|---|---|---|---|---|
| S101 | Graphite General-Purpose | 15–25 | 1.30–1.60 | ≤0.034 |
| S201 | Graphite Medium | 18–28 | 1.00–1.40 | ≤0.034 |
| S301 | Graphite Fine-Bead | 20–32 | 0.75–1.10 | ≤0.034 |
| S401 | Graphite Micro HD | 25–35 | 0.50–0.80 | ≤0.034 |
Specify the S-series code, bead size, target molded density, intended insulation system and required test documentation. Include the applicable fire-performance criteria for the finished application.
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