Carbon Fiber Mesothelioma, Are Carbon Nanotubes A New Asbestos Technology Networks

Why the concern over mesothelioma and the association with asbestos.

Printable santa coloring pages. Because of their special mechanical and electrical properties and their ability to conduct heat nanotubes are being added to an increasing number of structural materials including the carbon fiber. Carbon nanotubes due to their fibrous morphology have been linked to asbestos. Carbon fibers or carbon fibres alternatively cf graphite fiber or graphite fibre are fibers about 5 to 10 micrometers 000020000039 in in diameter and composed mostly of carbon atoms.

A large number of studies have been dedicated to the release of fibrous particles from composites. A current theory describing the toxicity of fibers indicates that fiber dose fiber dimension and fiber durability in lung fluid are the three primary factors determining fiber toxicity lippmann 1990. Asbestos carbon fibers and carbon nanotubes cnts have been widely used in composites with profound impacts not only on technology and economy but also on human health and environment.

A mineral fiber widely used for an enormous range of applications but which caused an epidemic of disease in exposed individuals that continues to increase and to which an estimated 125 million people are still exposed to in the workplace. This can lead to chronic inflammation and fluid in the lungs and may ultimately cause emphysema. These results indicate that lung digestion methods should be carefully assessed for each fiber type before initiating fiber clearance studies.

Carbon fibers have several advantages including high stiffness high tensile strength low weight high chemical resistance high temperature tolerance and low thermal expansion. This problem may be alleviated by the addition of short carbon fibers typically 10 pm in diameter l 61. New research shows that long needle thin carbon nanotubes could lead to lung cancer.

In addition treatment with bleach produced a small reduction in both asbestos fiber type diameters and greater changes in kevlar and wollastonite diameters and carbon fiber lengths p less than 005. Almost all the previous work on carbon fiber reinforced concrete was conducted in japan and it showed that the use of carbon fibers in the amount of 2 vol approximately doubled the flexural strength 1 41. And mesothelioma an otherwise rare form of cancer associated with the lining surrounding the lungs.

The physical and chemical characteristics of the ultrafine carbon fibres which are less than 10 microns thick make them immune to the lungs natural cleansing mechanism the research suggests. A large number of studies have been dedicated to the release of. Asbestos carbon fibers and carbon nanotubes cnts have been widely used in composites with profound impacts not only on technology and economy but also on human health and environment.