🧩 PEEK+BIO – Polyether Ether Ketone Biocomposite
(Advanced, eco-friendly technical material combining high-performance PEEK with bio-based fibers (flax, hemp, cellulose). Maintains extreme PEEK performance with a lower carbon footprint and reduced weight.)
🔹 What is PEEK+BIO
PEEK+BIO is a hybrid composite where the PEEK matrix is reinforced with natural fibers or bio-based polymers (PEEK-Lignin, PEEK-Flax). The goal is to reduce weight (by 10–15%) and ecological impact without compromising mechanical or thermal performance. It offers high rigidity, continuous operating temperatures up to 250 °C, and a natural, organic finish.
🔧 Composition & Properties
- Base: 60–80% PEEK.
- Bio-based fibers: 20–40% (flax, hemp, cellulose, lignin).
- Density: 1.20–1.28 g/cm³.
- Melting Point: ≈ 330–340 °C.
- Chemical Resistance: Excellent.
- Continuous Heat Resistance: 230–250 °C.
🚗 Where PEEK+BIO is used in the automotive industry
| Component | Example parts | Observations |
| Housings / Covers | Sensors, pumps, valves | Low weight, high durability |
| Technical Structures | Frames, clips, supports | Mechanical strength + controlled rigidity |
| Interior / Decorative | Semi-matte organic parts | Eco-friendly natural finish |
| EGR / Thermal | Fittings, ducts | Stable at 240 °C, chemically inert |
🔧 Welding Temperature and Methods
| Method | Optimal Temp | Observations |
| Hot Air | 360 – 380 °C | Slow melting, stable flow |
| Plastic Extrusion | 350 – 380 °C | PEEK or compatible PEEK+BIO rods |
| Heat Plate (Mirror) | 350 – 370 °C | Clean bond, no bio-fiber degradation |
🔩 Material Compatibility
- ✅ Compatible: PEEK, PEEK+GF, PEEK+CF, PEI, PSU, PPS, PPSU, PES.
- ⚠️ Good Compatibility: PPA, PEEK+PA.
- ❌ Incompatible: PP, PE, PS, ABS, PC, PET (completely different melting points).
💡 ReplastMD Recommendation: Use pure PEEK rods at 370 °C. Uniform heating is crucial to avoid burning the bio-fibers. Slow cooling ensures a homogeneous finish without porosity.
🧠 How to Identify PEEK+BIO
- Engraved marking: >PEEK+BIO<, >BIOPEEK<, >VESTAKEEP ECO<.
- Texture: Matte, naturally textured, light beige to organic brown.
- ReplastMD practical test: Lighter than standard PEEK; has a faint woody scent when melted. Does not deform at 250 °C.
🛠️ PEEK+BIO Welding at ReplastMD:
At our ReplastMD service center (Chisinau, Ciocana sector), we perform professional PEEK+BIO welding for sensor housings and sustainable OEM components, ensuring an eco-friendly and high-strength finish.