This solution adopts a composite system of “Y‑network carbon nanotube conductive framework + dynamically cross‑linked shape‑memory polymer matrix” to develop a transparent conductive film (TCF) with ultra‑high transparency, extreme flexibility, and self‑healing capabilities.
Carbon nanotubes are directionally assembled to form a 3D Y‑shaped conductive network, ensuring the continuity and flexibility of conductive pathways. Ureidopyrimidinone (UPy) dynamic hydrogen‑bond cross‑linkers are incorporated into the shape‑memory polymer matrix, enabling molecular chain rearrangement under mild external stimulation to achieve scratch self‑healing.
The final product achieves over 99% optical transmittance, can withstand repeated 180° bending without damage, and completely transcends the performance limits of conventional conductive films.

In contrast to the brittle behavior of ITO films (fracturing at millimeter‑scale bending radii), this CNT‑TCF allows 180° folding (bending radius = 0.5 mm). After 10,000 bending cycles, its resistance variation remains stable, making it ideal for high‑frequency bending applications such as smart wristband straps and AR glasses temples. It solves the industry pain point of easy damage to conductive films in wearable devices.

Targeting scratches and abrasions during daily use of wearable devices, self‑healing can be triggered at ambient temperature (35–45 °C, close to human body temperature or mild heating) without additional tools.
Scratches up to 50 μm deep are fully healed within 10 minutes. The film can endure more than 500 repeated healing cycles, with conductivity retention ≥95% after healing, significantly extending the service life of devices.

With >99% transmittance and 5% haze, the film is visually “invisible”, preserving the display clarity of AR glasses and the aesthetic quality of smart devices.

Optimized via nitric acid doping, the sheet resistance is as low as 15 Ω/sq, meeting the low‑power conductive requirements of wearable electronics and supporting core functions including touch sensing and flexible displays.

Through temperature‑induced nano‑infiltration engineering, Y‑shaped carbon nanotubes (aspect ratio 500:1) are uniformly dispersed in the shape‑memory polymer matrix to form a continuous 3D conductive pathway.
Even when the film is bent 180°, the carbon nanotube network remains connected, and resistance fluctuation is controlled within a reasonable range.

UPy dynamic hydrogen‑bond cross‑linkers rapidly break and re‑form under thermal stimulation, reconnecting molecular chains at scratch sites. Combined with the self‑aggregation effect of carbon nanotubes, the repair of conductive pathways is accelerated.

Nitric acid doping improves the carrier mobility of carbon nanotubes, increasing conductivity by 30% compared with undoped samples.

The roll‑to‑roll coating process enables mass production of wide‑format films (≤1.2 m). The coating thickness is controlled at 20–50 μm, balancing flexibility and mechanical strength.

The process is highly compatible with the lamination and packaging procedures of wearable devices, requiring no modification to existing production equipment.

Dongguan Yusheng Technology Co., Ltd.

Specialized in R&D, development, and manufacturing of transparent conductive films and supporting adhesives.

Contact:

Email: zhengzhen@nqrubber.com

Phone: +86-13243809168

Contact Person: Zheng