In the booming era of New Energy Vehicles (NEV), the safety and durability of charging infrastructure are under the spotlight. As the “first line of defense” for charging cables, the quality of the TPU jacket material directly dictates the cable’s lifespan and the user experience.
Currently, the market for charging cable jacket materials is a mixed bag. To cut costs, many manufacturers adopt modified solutions using powder-filled flame retardants and low-quality base resins. While the prices are tempting, practical extrusion processes are often plagued by issues like slag accumulation, bulging, and rough surfaces. These problems not only increase scrap rates but also hide significant safety risks.
Today, we introduce a solution truly born for high performance: E185F-06M-18 Polyether-based Thermoplastic Polyurethane (TPU) Charging Cable Jacket Material.
Directing the Pain Points: Why “Cheap” Cable Material Isn’t Actually Cheap
Before diving into our product, let’s look at the typical issues encountered during the production of low-cost TPU jacket materials:
The Pain of “Slag Accumulation”
Materials modified with powder flame retardants suffer from poor compatibility. During extrusion, this leads to accumulation and scorching at the screw and die head — requiring frequent downtime for cleaning and causing surface scratches on the cable.
The Risk of “Bulging”
When inferior powders or impurities accumulate within the screw and are eventually carried out by the melt, they form protruding “bulges” on the jacket surface — leading directly to the scrapping of entire cable batches.
Compromised Performance
Inferior base resins drastically compromise weather resistance, hydrolysis resistance, and mechanical strength, failing to meet rigorous industry standards.
Note: Typical defects caused by low-quality materials include die deposit, drool, and craters — all of which result in costly production downtime and increased reject rates.
The Solution: One-Step Synthesis TPU Solves Problems at the Source
E185F-06M-18 is an 80°C temperature-rated modified TPU material. It uses polyether-type TPU as the primary base resin, integrated with matting agents, flame retardants, and antioxidants through a specialized blend-extrusion granulation process.
Liquid Flame Retardants & One-Step Synthesis
Flame-retardant components are uniformly dispersed within the molecular chains at the polymerization stage, fundamentally eliminating slag accumulation and bulging caused by flame retardant precipitation.
Mechanical Performance & Compliance
- Tensile strength: 26 MPa; Elongation at break: 680%
- Compliant with GB/T 33594 and BS EN 50620
- Flame retardancy: UL94 V-2
Weather Resistance & Processability
- Passes −40°C low-temperature embrittlement test
- Uniform, high-end matte finish
- Wide processing window with detailed temperature guidance
Technical Parameter Comparison
| Feature | Low-Cost Powder-Filled TPU | E185F-06M-18 (One-Step Synthesis) |
|---|---|---|
| Flame Retardant System | Powder (Physical Blend) | Liquid (Chemical Synthesis) |
| Production Process | Prone to slag & bulging; frequent downtime | Smooth extrusion, clean surface, high stability |
| Base Resin Quality | Low cost, unknown performance | High-quality Polyether TPU; Hydrolysis resistant |
| Tensile Strength | Relatively low; easy to break | 26 MPa; Tough and durable |
| Appearance | Rough surface; uneven gloss | Uniform matte; High-end feel |
| Standard Compliance | May fail long-term aging tests | Fully compliant with GB/T 33594 & EN 50620 |
Processing and Packaging Guidelines
Screw Recommendation: BM (Barrier) Screw
Barrier Structure
Separates molten and solid materials, ensuring only fully melted material enters the melt channel.
High Plasticization Efficiency
Un-melted particles are subjected to high shear at the barrier gap, improving melting rate and quality.
Stability & Specification
Low fluctuations in output, pressure, and temperature. Recommended compression ratio: 3.0 or higher.
Typical Extrusion Temperature Settings (°C)
Zone 1: 140 | Zone 2: 165 | Zone 3: 180 | Zone 4: 180
Flange: 190 | Neck: 190 | Head: 175 | Die: 165
Note: Adjustments of ±10°C are suggested based on the surface condition of the extrudate.
Drying, Packaging & Storage
- Drying: 90–110°C for 1–2 hours using a well-ventilated hopper dryer.
- Packaging: Net weight 25 ± 0.2 kg per bag, moisture-proof PE or aluminum-plastic composite bags.
- Storage: Ventilated warehouse, away from direct light.
Conclusion
In the field of EV charging, material quality should never be a compromise. Choose E185F-06M-18 to bid farewell to slag and bulging issues and help your brand build high-quality charging infrastructure.
Ready to upgrade your cable quality? Contact our engineering team for samples and full technical support!
