PURPOSE: To give good conductivity to an inorg. hardened body at a low cost with a little amt. of additive and to obtain a conductive inorg. hardened body useful for such a structural material or a heating element which require antistatic property incorporating carbon whiskers produced by vapor phase method into the inorg. hardened body.
CONSTITUTION: Carbon whiskers are produced by a vapor phase method that, for example, carbon source gas such as methane, acetylene, etc., and catalyst gas such as ferrocene, iron acetylacetane, etc., are carried by a carrier gas and heated at high temp. The obtd. carbon whiskers are used with inorg. hardening particles such as cement, lime, calcium silicate, and quartzite to produce a conducting inorg. hardened body by premixing method, sheet manufacturing method, extrusion molding, etc. The obtd. inorg. hardened body has ≤107Ω.cm volume resistivity. Moreover, the electric resistance can be easily varied according to the purpose of use by controlling the amt. of whiskers to be incorporated.
ISHIOKA MUNEHIRO
MATSUBARA KENJI
NAKAMURA NOBUYUKI
