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BTRA Masters the Acrylic Precursor Technology for Carbon Fiber

The Bombay Textile Research Association (BTRA) has reached another major milestone by mastering the acrylic precursor technology which is critical for carbon fiber production. As one of the leading institutions dedicated to textile research and having decades of expertise, BTRA continues to push the boundaries of textile research in India.
BTRA’s advanced Carbon fiber research laboratory is supported by state-of-the-art equipment (including Pilot scale Wet-spinning machine, DMA, TMA, etc.) and a dedicated team of scientists and technicians specializing in various fields. The successful development of the high-strength acrylic precursor technology reflects BTRA’s commitment to the development of indigenous carbon fiber production.
Carbon fiber, known for its exceptional strength and lightweight properties, is indispensable in industries such as aerospace, automotive, and sports equipment. The acrylic precursor is a vital raw material in carbon fiber production, and BTRA’s mastery of this technology ensures the availability of high-quality acrylic precursor fiber that meets the stringent requirements for carbon fibers required in aerospace and defense applications.
This achievement aligns with BTRA’s mission to serve the textile and allied industries through pioneering research, testing, and consultancy services. By advancing this technology, BTRA not only strengthens its position in the field of high-performance fibers but also contributes significantly to India’s growing capabilities in producing world-class carbon fiber. Presently, BTRA can produce the acrylic precursor fibers of given specification.

Specification

Filament number 1K, 2K, 3K, 4K
Linear Density (mono-filament) 1.23 denier
Filament diameter 13-15 micrometre
Tensile Strength 7.12 g/d
Elongation at break 10.5
Shrinkage @ 215⁰C after 210 min 16%

Under Development

BTRA’s another advanced research includes the development of PAN/CNT (Polyacrylonitrile/Carbon Nanotube) based precursor fibers. These PAN/CNT fibers exhibit less shrinkage during simulated stabilization heat treatment at 215°C under a preload of 5 MPa for 210 minutes, compared to standard PAN fibers. Additionally, when converted to PANOX (oxidized PAN fibers), the PAN/CNT fibers demonstrate superior strength, reaching 2.2 grams per denier (gpd), which is significantly higher than the 1.6 gpd strength observed in conventional PAN-based PANOX. The reduced shrinkage and increased strength of PAN/CNT-based PANOX fibers make them highly suitable for advanced applications where mechanical performance and flame resistance properties are critical.

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