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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PCT launches composite repairs unit CompositesWorld

The primary focus will be on the oil and gas industries.

Cruise-capable rotorcraft exploits the performance of composites CompositesWorld

The Carter Aviation Personal Air Vehicle combines the best of fixed-wing aircraft and helicopters, in an all-carbon composite design.

Volvo 65: Identical and optimal composite spars and rigging CompositesWorld

“One design” concept takes the boat out of the yacht-racing equation, pitting teams against the wind, sea … and each other.

Reducing manufacturing cost via RTM CompositesWorld

Airbus Bremen aims to replace dozens of prepreg components and assembly operations with a unitized multispar composite flap molded in a one-shot process.

Vartega Carbon Fiber Recycling wins Cleantech award CompositesWorld

2014 startup and Colorado-based Vartega Carbon Fiber Recycling is the recipient of the National Emerging Technology Award, given by Cleantech Open at its 2015 Global Forum.

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