Si-TPV 2150-70A Silicone-Based Thermoplastic Elastomer for High-Durability Flexible Wire & Cable Applications

Durable, stable, soft-touch material for advanced cable systems

The global wire and cable industry is undergoing a significant transformation driven by electrification, digital connectivity, and lightweight design trends. Applications such as electric vehicle (EV) charging systems, high-speed data transmission, wearable electronics, and smart consumer devices are placing increasingly strict demands on material performance.

Traditionally, thermoplastic elastomers (TPEs) have been widely used in flexible cable jacketing due to their good processability and softness. However, as end-use environments become more complex, conventional TPE materials are increasingly showing limitations in durability, surface stability, and long-term mechanical reliability.

To address these challenges, Si-TPV 2150-70A, a silicone-based thermoplastic elastomer developed by SILIKE, offers a new material approach designed for high-durability flexible wire and cable applications.

Si-TPV 2150-70A is a dynamic vulcanized thermoplastic silicone-based elastomer (TPO system) engineered with a finely dispersed silicone rubber phase (1–3 μm) embedded in a thermoplastic matrix.

This “island structure” enables the material to combine silicone-like softness, thermoplastic processing efficiency, and enhanced mechanical durability. Unlike conventional TPEs that rely on plasticizers, Si-TPV achieves performance through internal structural design.

Key Industry Challenges & Si-TPV Material Solution

Flexible cables are constantly subjected to bending, twisting, pulling, and repeated mechanical stress, which often leads to mechanical fatigue and micro-cracking in conventional TPE materials, ultimately reducing product lifespan and reliability. In daily use environments, cable jackets are also exposed to friction and contact, resulting in surface abrasion, whitening, and loss of aesthetic quality, while mass production may suffer from processing instability such as inconsistent flow behavior and dimensional variation, affecting efficiency and product consistency. At the same time, the traditional balance between softness and durability remains a key limitation, as improved softness often comes at the expense of mechanical strength and long-term wear resistance.

To address these challenges, Si-TPV 2150-70A is designed as a structural upgrade to conventional elastomer systems, delivering long-term durability and stable performance under dynamic stress. It is suitable for flexible cable jacketing, EV charging systems, consumer electronics wiring, industrial cables, and overmolded components, providing a more reliable material foundation for next-generation cable applications.

Key performance advantages include crack resistance, which maintains structural integrity under repeated bending and twisting to extend cable lifespan; abrasion resistance, which improves surface durability and appearance retention under high-contact conditions; non-migrating surface stability, which eliminates plasticizer-related issues such as stickiness, blooming, and odor; silky touch performance, delivering a dry, skin-friendly surface without additional coating processes; and excellent overmolding compatibility, enabling strong adhesion to PP, PE, PC, PA, PET, and SEBS for efficient soft-hard integrated designs.

Stronger, smoother, longer-lasting flexible cable protection

Application Areas

Si-TPV 2150-70A is designed for high-performance flexible wire and cable systems where long-term mechanical durability, surface stability, and processing efficiency are critical. With a balanced property profile—Shore A 73 hardness, 10.4 MPa tensile strength, 650% elongation at break, and 49 kN/m tear strength—the material is engineered to withstand continuous dynamic stress while maintaining a soft-touch surface.

Its unique silicone-dispersed thermoplastic structure enables stable performance in both consumer and industrial environments, especially where repeated bending, abrasion, and environmental exposure are unavoidable.

Wire & Cable Systems

Si-TPV 2150-70A is particularly optimized for next-generation cable systems requiring both flexibility and long-term durability.

Key Applications:

USB-C / fast charging cables

High-speed data transmission cables

Mobile device charging cables

Industrial flexible cable assemblies

Wearable device interconnect wiring

Smart home device cables

Audio & video signal cables

Performance Value:

With 650% elongation at break and high fatigue resistance, the material maintains structural integrity under repeated bending cycles. This significantly reduces crack formation commonly seen in conventional TPE cable jackets.

Its 49 kN/m tear strength enhances resistance against mechanical damage during pulling, dragging, or accidental stress in daily use.

In addition, the non-migrating silicone phase structure ensures a stable surface that does not become sticky or degrade over time, improving both handling comfort and product lifespan.

 

EV & Automotive Systems

The growing electrification of transportation systems requires cable materials that can perform reliably under temperature variation, vibration, and long-term mechanical stress.

Key Applications:

EV charging cables (Mode 2 / Mode 3 systems)

High-voltage flexible wiring systems

Interior automotive wiring harness protection

Functional soft-touch cable covers

Sensor and control system wiring

Performance Value:

Si-TPV 2150-70A provides excellent kink resistance and fatigue durability, making it suitable for EV charging cables that are frequently bent, coiled, and transported.

Its abrasion-resistant surface structure helps maintain appearance quality even under repeated contact with rough surfaces such as garage floors or outdoor environments.

The material’s Shore A 73 balance point provides sufficient structural support while still maintaining flexibility required for automotive dynamic motion environments.

High-performance cable material with flexibility, durability, and long-term abrasion resistance.
 
Used in electronics, EV, wearables, and industrial systems for durability and comfort.

Consumer Electronics

Consumer electronics demand materials that combine premium tactile experience with long-term aesthetic stability.

Key Applications:

Smartphone charging cables

Laptop and tablet data cables

Earphone and wearable accessory cables

Gaming device controllers and cables

Portable electronics connectors

Smart accessory soft-touch components

Performance Value:

The dry, silky surface feel of Si-TPV 2150-70A enhances perceived product quality, especially in frequently touched components.

Its non-tacky surface stability prevents dust attraction and fingerprint adhesion, maintaining a clean appearance over long-term use.

The combination of 10.4 MPa tensile strength and high elongation ensures that cables remain flexible yet resistant to internal structural damage during daily bending and pulling.

 

Wearable Devices

Wearable products require materials that maintain comfort during continuous skin contact while also enduring repeated motion.

Key Applications:

Smartwatch straps and connectors

Fitness tracking bands

AR/VR device straps and cables

Medical wearable device components

Health monitoring device connectors

Performance Value:

Si-TPV 2150-70A provides a skin-friendly, low-irritation surface with silicone-like softness, making it suitable for long-term contact with human skin.

Its compression set resistance (25%) helps maintain shape stability even under continuous wearing pressure.

The material also maintains stable elasticity under repeated flexing, ensuring comfort without deformation or material fatigue.

 

Industrial Flexible Systems

Industrial environments require materials that can withstand mechanical stress, abrasion, and long service cycles.

Key Applications:

Industrial automation cable systems

Flexible robotic wiring

Machinery control cables

Heavy-duty flexible connectors

Protective industrial cable jackets

Performance Value:

With high tear strength (49 kN/m) and strong fatigue resistance, Si-TPV 2150-70A performs reliably in environments involving continuous movement and mechanical load.

Its stable thermoplastic processing behavior enables consistent extrusion in large-scale industrial production, reducing downtime and improving manufacturing efficiency.

Si-TPV 2150-70A provides a structural solution to the limitations of conventional soft TPE materials, combining silicone-like durability with thermoplastic processing efficiency. It enables next-generation cable systems with improved reliability, surface stability, and long-term performance.

 

FAQ

1. What is silicone thermoplastic elastomer Si-TPV 2150-70A mainly used for?

Si-TPV 2150-70A is mainly used for flexible wire and cable applications that require high durability, including charging cables, EV cables, consumer electronics wires, and industrial flexible cable systems.

2. Is thermoplastic silicone elastomer Si-TPV 2150-70A suitable for EV charging cables?

Yes. Si-TPV 2150-70A high flexibility, kink resistance, and abrasion resistance make it suitable for EV charging cables that undergo frequent bending and outdoor use.

3. Does TPO elastomer material Si-TPV 2150-70A crack after repeated bending?

No. With 650% elongation at break and strong fatigue resistance, Si-TPV 2150-70A maintains structural integrity under repeated bending and twisting.

4. Can silicone-based TPE Si-TPV 2150-70A be used for overmolding applications?

Yes. Si-TPV 2150-70A shows strong adhesion to PP, PE, PC, PA, PET, and SEBS, making it suitable for soft-hard overmolding structures.

5. Is dynamic vulcanized elastomer Si-TPV 2150-70A suitable for consumer electronics cables?

Yes. Si-TPV 2150-70A is widely used in smartphone cables, laptop cables, and wearable device wires due to its silky touch and durable performance.

 

For more information about Si-TPV 2150-70A, including technical data, application guidance, sample requests, or collaboration opportunities, please feel free to contact our team. We provide professional support for flexible wire & cable systems, EV charging cables, consumer electronics, automotive applications, and overmolding elastomer solutions to help improve product durability, processing efficiency, and surface performance.

Website: www.si-tpv.com
Email: sale@densitytool.com

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