A flame‑retardant high‑density polyethylene sheet (commonly called an HDOE board) is an engineered plastic panel made by compounding standard HDPE resin with specialized flame‑retardant additives. It retains all the benefits of regular HDPE—lightweight, excellent wear resistance, and outstanding chemical stability—while exhibiting self‑extinguishing behavior, low smoke generation, and reduced toxic gas release when exposed to fire.
Key Features
- Superior Flame Retardancy
- Meets UL 94 V‑0 or China’s GB 8624-2012 B1 standards, self‑extinguishing quickly once the ignition source is removed.
- High Mechanical Strength & Wear Resistance
- Density of 0.93–0.97 g/cm³; impact strength ≥ 20 kJ/m², ensuring long service life in heavy‑duty environments.
- Excellent Chemical Resistance
- Withstands acids, alkalis, salts, and oils, ideal for harsh industrial settings.
- Easy Machinability
- Can be cut, milled, thermoformed, and welded (hot-plate or ultrasonic) for custom components.
- Environmentally Friendly Formulations
- “Halogen‑free” FR grades minimize dioxin formation; compliant with RoHS and REACH.
Typical Applications
- Food Processing: Conveyor guides, food contact surfaces
- Chemical Industry: Corrosion‑resistant linings, tank plates, piping
- Electrical & Electronics: Cabinet linings, high‑voltage insulation panels
- Water & Wastewater Treatment: Basin liners, gas trapping ducts
- Transportation: Marine deck panels, flooring underlays
Common Technical Specifications
| Property | Unit | Typical Value | Test Standard |
|---|---|---|---|
| Density | g/cm³ | 0.93 – 0.97 | GB/T 1033 |
| Notched Izod Impact Strength | kJ/m² | ≥ 20 | GB/T 1043 |
| Flexural Strength | MPa | ≥ 20 | GB/T 9341 |
| Heat Deflection Temp (0.45 MPa) | °C | ≥ 70 | GB/T 1634.2 |
| Flame Classification | — | UL 94 V‑0 / B1 | UL 94 / GB 8624 |
Selection & Installation Guide
- Determine Required FR Rating
- Choose UL 94 V‑0 for rapid self‑extinguishing and minimal smoke, or B1 for lower smoke generation.
- Specify Sheet Dimensions
- Thickness range typically 2 mm–100 mm; widths customizable. Account for load requirements and machining allowances.
- Select Additive System
- Halogen‑free systems offer superior environmental performance; halogenated grades are more cost‑effective.
- Machining & Welding
- Use CNC cutting and milling for precision. Ensure clean surfaces for welding; hot‑plate or ultrasonic methods yield strong joints.
- Verify Supplier Credentials
- Opt for ISO 9001–certified manufacturers and request third‑party test reports (e.g., SGS, Intertek).
Maintenance & Care
- Routine Cleaning: Wipe with neutral detergents; avoid prolonged contact with strong acids or bases.
- Inspections: Regularly check for cracks, delamination, or discoloration; replace if degradation is evident.
- Temperature Limits: Do not expose continuously above 70 °C to prevent warpage.
- UV Protection: For outdoor use, apply UV‑resistant coatings or perform periodic maintenance to guard against photo‑oxidation.
