Zone: Carbon Fiber
0311HPC_WIP1.jpg Overview

Carbon fiber — by far the most widely used fiber in high-performance applications — is produced from a variety of precursors, including polyacrylonitrile (PAN), rayon and pitch. The precursor fibers are heated and stretched to create the high-strength fibers. The first high-performance carbon fibers on the market were made from rayon precursor. PAN- and pitch-based fiber have replaced rayon-based fiber in most applications, but the latter’s “dogbone” cross-section often makes it the fiber of choice for carbon/carbon (C/C) composites. PAN-based carbon fibers are the most versatile and widely used. They offer an amazing range of properties, including excellent strength — to 1,000 ksi — and high stiffness. Pitch fibers, made from petroleum or coal tar pitches, have high to extremely high stiffness and low to negative axial CTE. Their CTE properties are especially useful in spacecraft applications that require thermal management, such as electronic instrumentation housings. Although they are stronger than glass or aramid fibers, carbon fibers are not only less impact-resistant but also can experience galvanic corrosion in contact with metal. Fabricators overcome the latter problem by using a barrier material or veil ply — often fiberglass/epoxy — during laminate layup.


Most Recent Content: Carbon Fiber
Forged composites replace complex metal parts

Powerhouse manufacturer’s high-pressure compression molding process forms prepregged CFRP components with forged-metal properties.
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GE Aviation's carbon fiber turbine blade turns 20 CompositesWorld

Certified in 1995 for the GE90 engine to power to Boeing 777 aircraft, the first carbon fiber composite fan blade is turning 20 years old.

Additive manufacturing: Can you print a car? CompositesWorld

Collaborative demonstration dispels doubt about 3D printing’s disruptive potential for direct-to-digital manufacturing of just about anything BIG.

Quickstep receives Nadcap accreditation CompositesWorld

The company received Nadcap accreditation for composite special processing at its Bankstown Airport, Sydney facility.

SkyPath: Scenic bikeway/walkway a winner with composites CompositesWorld

E-glass/carbon/epoxy provides the means for this long-sought addition to a 1.1-km harbor bridge in New Zealand’s capital city.

Velocite launches filament wound carbon fiber bike rims CompositesWorld

First rims to use automated continuous process reportedly deliver improved performance by reducing manufacturing errors and costs associated with manual layup.

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