Sinofibers Completes 5,000-Ton T1100 Carbon Fiber Wet Spinning Project

Updated on August 05, 2026 • 4 min read

Sinofibers Technology Co. Ltd. has completed the official technical appraisal of its wet spinning high-performance carbon fiber project, establishing a reported annual production capacity of 5,000 metric tons of T1100-grade carbon fiber.

According to the company, the material achieves a tensile strength of 6,600 MPa and a tensile modulus of 335 GPa, positioning it among the highest-strength commercial carbon fiber grades currently available for demanding structural applications.

The appraisal marks an important manufacturing milestone as the company advances large-scale production using a wet spinning process.

Wet Spinning Targets High-Performance Carbon Fiber Production

Most high-performance PAN-based carbon fibers are commonly produced using dry-jet wet spinning, a process that balances fiber quality with manufacturing efficiency.

Sinofibers states that its project demonstrates the feasibility of producing T1100-grade carbon fiber through a wet spinning route, which presents additional process control challenges during fiber formation.

To support industrial production, the company developed several manufacturing technologies, including:

• Controlled synthesis of polyacrylonitrile (PAN) precursor with narrow molecular weight distribution
• Dual-diffusion regulation for rapid coagulation and fiber formation
• Optimized pre-oxidation processes
• Improved carbonization technology for enhanced precursor microstructure

Together, these technologies are intended to improve fiber consistency and manufacturing stability.

New Equipment Supports Continuous Production

Sinofibers also developed proprietary manufacturing equipment for the production line.

According to the company, the project includes:

• An externally heated pre-oxidation furnace
• An integrated multi-zone carbonization furnace

The equipment is designed to improve temperature uniformity, support continuous manufacturing and reduce overall energy consumption during production.

Universities Contribute to Technology Development

The project was completed through collaboration with several Chinese research institutions, including:

• Donghua University
• Harbin Institute of Technology
• Nanjing Tech University
• Xi’an FuruiDa

According to Sinofibers, the development program has generated:

• 25 invention patents
• 30 utility model patents
• Participation in the development of one national standard

Target Markets Extend Beyond Aerospace

The company says the new carbon fiber is intended for multiple high-performance applications, including:

• Aerospace structures
• New energy vehicles
• Offshore wind energy
• Low-altitude aircraft
• Industrial robotics
• High-performance sporting goods

Sinofibers states that the material offers tensile strength approximately eight to ten times greater than conventional steel while weighing roughly one quarter as much.

Manufacturing Scale Becomes Increasingly Important

Professor’s Analysis

While the reported mechanical properties are notable, the most significant development is arguably the industrial production scale.

Producing laboratory quantities of T1100-grade carbon fiber has long been achievable.

Producing 5,000 metric tons annually while maintaining consistent quality is a much greater manufacturing challenge.

For PAN-based carbon fiber, performance depends not only on precursor chemistry but also on maintaining tight control throughout every production stage, including:

• Polymer synthesis
• Fiber spinning
• Stabilization
• Carbonization
• Surface treatment

Small variations during any of these processes can affect tensile strength, modulus and fiber consistency.

The announcement also highlights continued investment in process equipment, which often determines whether advanced carbon fiber technologies can move from laboratory development into commercial production.

Although the company reports successful technical appraisal and production capability, long-term market adoption will ultimately depend on consistent product quality, customer qualification and successful integration into demanding applications such as aerospace and advanced industrial manufacturing.

Expanding High-Performance Carbon Fiber Manufacturing

Demand for higher-strength carbon fiber continues to grow as industries pursue lighter and stronger structural materials.

Projects such as Sinofibers’ wet spinning production line reflect the broader industry trend toward expanding both manufacturing capacity and process capability for next-generation carbon fiber grades.

As aerospace, renewable energy, robotics and advanced transportation continue increasing their use of composite materials, industrial-scale production of high-performance carbon fiber is expected to become an increasingly important competitive factor.

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