Modified active carbon fiber used as filtering material to lower toxic matter from cigartte, and its prepn. method

Abstract

A modified activated carbon fiber (ACF), TiO2-Pd-Cu based ACF, for filtering out the tar, nicotin, CO, benzo(a) pyrene, fatty aldehyde, etc from the smoke of cigarette is prepared through adding ethanediol monomether into the solution of titanium sulfate, stirring, adding ACF, heating, adding the saturated solution of ammonium dicarbonate, regulating pH value, baking ACF, sintering, cooling, immersing in the aqueous solution of PbCl2 and CuCl, baking and cooling.

Description

technical field [0001] The invention relates to a filter material for a cigarette filter tip and a preparation method thereof, in particular to a modified active carbon fiber used for cigarette filter harm reduction and a preparation method thereof. Background technique [0002] Cigarette smoke contains harmful substances such as tar and CO. At present, the contents of the above two components in most domestic flue-cured cigarettes are: 15-17mg / stick, 14-16mg / stick. On May 21, 2003, the "Framework Convention on Tobacco Control" was adopted at the 56th World Health Assembly. On November 10, 2003, the Chinese government signed the "Framework Convention on Tobacco Control". The Chinese government promised that cigarettes produced after July 1, 2004, with a tar content of more than 15 mg per stick will not enter the sales market; The average tar content of cigarettes is reduced to about 12 mg / stick. However, the tar not only contains some harmful substance...

AI Technical Summary

Problems solved by technology

The United States and Japan have developed activated carbon fiber or composite activated carbon fiber cigarette filters. Although they have obvious filtering effects on tar, nicotine, fatty aldehydes, etc., they have poor filtering effects on strong carcinogens such as benzo[a]pyrene. , has almost no purification effect on