🧩 PLA+CF – Carbon Fiber PLA
(Partially biodegradable material, reinforced with carbon fiber to achieve a rigid, lightweight, and stable structure. PLA+CF combines a bio-PLA base with mechanical properties comparable to technical materials, offering a matte finish.)
🔹 What is PLA+CF
PLA+CF (Polylactic Acid + Carbon Fiber) is a technical bio-based compound. Carbon fibers (5–20%) provide rigidity, low weight, and increased thermal resistance, while the PLA matrix preserves fine detail. At ReplastMD, we treat this as a high-precision material. It has a technical matte appearance, is easy to machine, and offers excellent dimensional stability without warping.
🔧 Composition & Properties
- Polymer Base: Bio-Polylactic Acid (PLA).
- Reinforcement: Micronized carbon fiber (5–20%).
- Density: 1.20 – 1.25 g/cm³.
- Melting Point: 190 – 220 °C.
- Operating Range: –10 °C to +130 °C.
- Chemical Resistance: Good (oils, alcohol, detergents).
🚗 Where PLA+CF is used in the automotive industry
| Component | Example parts | Observations |
| Rigid Covers | Handles, plates, inserts | Technical matte look, rigid |
| Mounting Hardware | Clips, brackets, housings | Precision, no deformation |
| Interior Decor | Ornaments, panels | Carbon texture, elegant finish |
| Prototype Parts | Functional models | Dimensionally stable, lightweight |
🔧 Welding Temperature and Methods
| Method | Compatibility | Observations |
| Hot Air | ❌ Cannot be welded | Carbon prevents uniform melting |
| Heat Plate (Mirror) | ❌ Impossible | Rigid material, does not flow |
| Manual Extrusion | ❌ N/A | Thermal degradation above 200 °C |
| Epoxy Bonding | ✅ Recommended | Structural epoxy / polyurethane adhesives |
💡 ReplastMD Recommendation: PLA+CF does not weld thermally. Carbon fibers destroy the melt’s cohesion. We recommend structural epoxy bonding or mechanical fastening for all repairs.
🧠 How to Identify PLA+CF
- Surface: Matte, fine, slightly rough to the touch.
- Color: Deep black / anthracite gray; no reflections.
- ReplastMD practical test: High rigidity, low density. Does not melt uniformly at 120–150 °C.
- Common markings: >PLA+CF<, >CARBON PLA<, >PROTO-PASTA<.