Franklin Fiber

Dec 05, 2003 4 Replies
C

Some years ago, a product tradenamed "Franklin Fiber" was produced by USG Industrial Products. Franklin Fiber was described as "a calcium sulfate micro-fiber" and was produced at US Gypsum's East Chicageo, Indiana plant. It was discontinued in the late '90s.



It was a very short fiber (so short, in fact, I described it as having only one end) - about 50-60 microns, with a diameter of about 2 microns. It had a profound effect on improving the tensile and flexural strengths of molded friction material composites.



Is anyone aware of a similar product being available?



Carl Sachs


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B

Don' t know. Short buckey tube with buckey ball on both ends would be nice to prevent slip. Maybe.

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P

Sounds at least as dangerous as asbestos to me. Pragmatist

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J

The cause of carcinogenicity of asbestos fibers is still unresolved. There are fibrous or acicular mineral species which are harmless: wollastonite, erionite, etc. There are about 200 mineral species which may occur as fibers, but very few among them are problematic.

One has tried to correlate the toxicity of a silicate with the deposition of ferroprotein on fibers arriving in the lungs (similarly to the "asbestos bodies"), but if it's true that one has observed patients with ferroproteins settled on pulmonary talc, the latter does not induce cancer.

There are specific lung problems with some high-tech synthetic fibers, but not with rockwool, which is now in use for 30 years. J.J.

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