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Polyimide Double Fleece Flame Retardant Fabric

Technical Data Sheet

Ultra-Lightweight High-Temperature Protection

Engineered for extreme environments, our polyimide bipolar fleece redefines thermal insulation with exceptional heat resistance and minimal weight.  This innovative double-faced fleece delivers superior protection in critical applications where both performance and wearer comfort are paramount.

Breakthrough Performance Features

✅ Unmatched Thermal Stability

- Continuous service temperature: -269°C to +260°C

- Short-term exposure resistance: up to 400°C

- LOI >42% (inherent flame resistance)

✅ Dual-Surface Functionality

- Side A: High-density face for abrasion resistance

- Side B: Plush fleece for enhanced insulation

- Total thickness: 1.8-2.2mm (customizable)

✅ Superior Thermal Protection

- Thermal conductivity: 0.032 W/m·K

- Radiant heat resistance: RHTI ≥ 20°C (EN ISO 11612)

✅ Exceptional Lightweight Properties

- Weight: 180-220 gsm (40% lighter than aramid alternatives)

- Zero melt/drip behavior

- Low smoke toxicity (FAR 25.853 compliant)

Technical Specifications

| Parameter | Specification | Test Method |

|-----------|--------------|-------------|

| Composition | 100% Polyimide Fiber | - |

| Weight | 200±10 gsm | ISO 3801 |

| Thickness | 2.0±0.1mm | ISO 5084 |

| Tensile Strength | >450N (warp/weft) | ISO 13934-1 |

| Thermal Shrinkage | <1.5% @ 300°C/30min | ISO 7771 |

Certifications & Compliance

- EN ISO 11612:2015** (Levels B2, C2)

- NFPA 2112:2023** (Flash Fire)

- ASTM F1506** (Arc Flash Protection)

- FAR 25.853** (Aircraft Cabin Safety)

- OEKO-TEX® Standard 100 Class I

Premium Applications

• Aerospace thermal insulation layers

• Electric vehicle battery protection systems

• High-voltage electrical maintenance

• Fire proximity suit inner liners

• Semiconductor manufacturing cleanrooms

Competitive Advantages

★ Lightest FR fleece available commercially

★ Maintains flexibility at cryogenic temperatures

★ Excellent dielectric properties(10¹⁴ Ω·cm)

★ Inherent chemical resistance to most solvents

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