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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Carbon fiber rudders, dagger board hydrofoils prove their mettle CompositesWorld

CarbonicBoats designed and manufactured carbon fiber/epoxy dagger board and rudder hydrofoils as retrofits for several International A Division Catamarans that recently competed in the 2014 world championship races in New Zealand.

Excess carbon, glass and other fibers CompositesWorld

Reports of unused fiber reinforcement, prepreg and other fiber forms, as well as production cutoff and scrap. Updated: July 21, 2014.

OOA epoxy vinyl esters for carbon fiber composites CompositesWorld

Global resin supplier AOC has developed R058, a line of out-of-autoclave (OOA) epoxy vinyl ester resins to meet demand for high-performance composites in aerospace, automotive, wind energy, military, marine and other markets.

UTC Aerospace to supply wheels, carbon brakes for 737 MAX CompositesWorld

UTC Aerospace Systems will manufacture wheels and carbon brakes for all models of the Boeing 737 MAX via its Landing Systems facility in Troy, Ohio, USA.

Northrop Grumman, ATK complete James Webb backplane testing CompositesWorld

The composite backplane for the James Webb Space Telescope successfully passed its static testing, en route to eventual launch of the telescope in 2018.

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