منابع مشابه
FABRICATION OF CARBON FIBERS FROM COMMERCIAL WET SPIN POLYACRYLONITRILE FIBERS
Carbon fibers are fabricated from different materials such as special polyacrylonitrile (PAN) fibers, cellulose fibers and pitch. But PAN fibers are recognized as the most widely used precursor for the present-day manufacture of carbon fibers. The process of fabrication carbon fibers from special PAN fibers is composed of two steps including oxidative stabilization at low temperature and carbon...
متن کاملTHE STUDY OF ELECTROLESS COATING OF NICKEL ON CARBON FIBERS
The continuity and thickness of the coating layer, are the most important factors in wetting properties and strength of carbon fibers. These factors are crucial in the quality of metal matrix composites made with carbon fibers. In this research the Polyacrylonitrail base carbon fibers have been nickel coated with 0.2, 0.5, 0.8 and 11 ,u in thickness, by the electroless method. The effect of the...
متن کاملRecovering Carbon Fibers
S ince 2000, the worldwide market for carbon-fiber-reinforced composite materials (CFRP) has grown from 30,500 to 43,500 tons per year. According to the latest estimates, the demand for carbon fibers will rise to some 1,300,000 tons by 2020 [1]. When preforms are used for manufacturing CFRP parts by the Liquid Composite Molding (LCM) process, up to 40 % waste accrues, resulting in a considerabl...
متن کاملNanotube Composite Carbon Fibers
The mechanical properties of materials in small rod-shaped form are of considerable technological interest since, due to their shape and size, they can exhibit appreciably greater strength relative to corresponding macroscopic forms. For example, the mechanical strength of silicon carbide whiskers systematically increases with decreasing whisker diameter over the 100 to 1 micron range. This phe...
متن کاملWindmill Palm (Trachycarpus fortunei) Fibers for the Preparation of Activated Carbon Fibers
Activated carbon fibers (ACFs) were prepared by steam activation of windmill palm (WP) (Trachycarpus fortunei) fibers in a nitrogen atmosphere at various temperatures in the 600 to 850 °C range, and their characteristics were investigated. The effects of temperature, in terms of porous texture and surface chemistry, were identified through the use of scanning electron microscopy (SEM), nitrogen...
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ژورنال
عنوان ژورنال: Materials Today
سال: 2006
ISSN: 1369-7021
DOI: 10.1016/s1369-7021(06)71643-1