# Teijin Develops Self-Healing and Recyclable Thermosetting CFRP

> The Japanese materials producer introduces a circular CFRP retaining conventional mechanical properties while enabling thermal repair and low-energy chemical decomposition.

Published: 2026-07-30T11:45:00+00:00
Language: en
Categories: [Composites](https://chemexworld.com/en/categories/sectors/composites.md), [Sectors](https://chemexworld.com/en/categories/sectors.md)

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## Content

Conventional CFRPs manufactured via thermosetting resin impregnation present long-standing end-of-life challenges, as cured polymers cannot be remelted or remolded, often resulting in incineration or landfilling. Leveraging its polymer material design capabilities, Teijin has introduced a novel resin architecture that retains standard mechanical rigidity while facilitating circular processing.

The technological milestone was achieved in part through the Strategic Innovation Promotion Program (SIP) "Building a Circular Economy System" under Japan's Cabinet Office.

### **Key Technical Innovations**

- **Heat-Activated Self-Healing:** Surface or structural resin degradation can be repaired via short exposure to a designated thermal threshold, mitigating premature structural replacement and material disposal.
- **Thermal Remolding Capacity:** Unlike standard thermoset composites, Teijin’s resin demonstrates controlled flowability when subjected to target temperature windows post-molding, permitting re-processing via compression molding techniques.
- **Chemical Resin Decomposition for Fiber Retrieval:** Traditional CFRP fiber recovery relies on thermal oxidation in furnaces exceeding 400°C—an energy-intensive process. The new CFRP decomposes when immersed in a specific chemical solution, yielding clean, long carbon fibers with low environmental overhead.

### **Sampling Targeted for 2028 and Supply Chain Integration**

Teijin plans to initiate developmental sample distribution for the new CFRP product line in **2028**, advancing collaborative R&D with academic and industrial research hubs.

With a focus on future mass production, Teijin Carbon is actively seeking joint development partnerships to optimize the entire value chain—from resin formulation and component design to closed-loop recycling infrastructure.

## Source

[TeijinCarbon](https://www.teijincarbon.com/blog/blog-detail/teijin-develops-new-thermosetting-carbon-fiber-reinforced-plastic-combining-self-healing-functionality-with-recyclability/)