The mass ratio between the long-fiber-length carbon fibers and the short-fiber-length carbon fibers (long-fiber-length carbon fibers : short-fiber-length carbon fibers) is from 20:80 to 80:20.
Therein, Mn: total weight of carbon fiber bundle, Ln: length of carbon fibers, D: diameter of carbon fibers.
Disclosed are carbon fibers composed of carbon fibers that are pretreated by means of electrochemical oxidation.
The carbon fibers (a) are preferably pitch-based carbon fibers or carbon nanotubes.
The carbon-fiber roving is one comprising rigid carbon fibers and flexible fibers, wherein the flexible fibers have a Young's modulus 0.0005-0.5 times that of the rigid carbon fibers.
Carbon fibres and articles of carbon fibres
Carbon fibres and articles of carbon fibres
Carbon fibres and articles of carbon fibres
Carbon fibres and articles of carbon fibres
Carbon fibres and articles of carbon fibres
Carbon fibres and articles of carbon fibres
The fibres may comprise carbon fibres; recycled carbon fibre has been found to be particularly useful.
Here, Mn is the carbon fiber bundle weight, Ln is the fiber length of the carbon fibers, and D is the fiber diameter of the carbon fibers.
When an electromagnetic wave of a high frequency is irradiated to the carbon fibers, the carbon fibers are modified.
Preferably, carbon fibers are used as the reinforcement fibers.
Furthermore, fine short carbon fibers with excellent dispersibility can be obtained by making the fine carbon fibers into short fibers.
There are provided improved processes for the manufacture of enriched pitches, carbon fiber precursors, carbon fibers, and graphite fibers.
The turbine blade (1) is essentially formed of carbon that is reinforced by carbon fibres.
The present invention relates to a method for the functionalization of carbon fibres using the vapour of nitric acid, carbon fibres thus modified and use thereof.
Furthermore provided is a process for producing carbon fibers from the carbon-fiber precursor fibers.
Requêtes fréquentes français :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
Requêtes fréquentes anglais :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
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