A method for rapid evaluation of the adsorption effect of porous filter additives

Abstract

The invention discloses a method for rapidly evaluating the adsorption effect of a porous filter tip additive. The method comprises the following steps: degassing the additive through a specific surface area analyzer overnight at 80-180 DEG C to primarily remove impurity gases in the porous additive; transferring an organic liquid into a vaporization storage tank for vaporizing, connecting the organic liquid to a weight absorption instrument, or directly connecting a poisonous gas to the weight absorption instrument, weighing the primarily degassed additive and filling the additive in a quartz hanging basket of the weight absorption instrument; degassing the additive for the second time; setting 10-30 test pressure points according to the saturated vapor pressure of the organic liquid or the poisonous gas, respectively carrying out saturation adsorption on different pressure points through the weight absorption instrument, and drawing an adsorption curve graph; and analyzing according to the obtained adsorption curve graph to obtain the adsorbing capacity and the adsorption tendency change of the type of additives in low pressure regions. The method is high in test sensitivity, simple and convenient to operate and capable of accurately evaluating the adsorption effects of different filter tip additives on harmful substances.

Description

technical field [0001] The invention belongs to the field of cigarette production, and in particular relates to a method for rapidly evaluating the adsorption effect of porous filter tip additives. Background technique [0002] With the progress of society, smoking and environmental issues have attracted worldwide attention. The "Framework Convention on Tobacco Control" requires governments to formulate more stringent "tobacco control" laws and regulations, urging cigarette manufacturers to strictly control the release of major harmful components in cigarette smoke while reducing the amount of tar released from cigarettes. Now relevant tobacco companies and research institutions are constantly developing various new materials every year, and are trying to apply new materials to cigarettes. Among them, porous materials are widely concerned because of their large specific surface area and abundant channels. It is of great significance for the screening and development of poro...

AI Technical Summary

Problems solved by technology

The commonly used evaluation method is to detect the release of harmful components in the smoke, that is, by adding filter tip additives directly to the filter rod to make a composite tip, and then roll it into finished cigarettes, and analyze the harmful components of the smoke. However, in the current domestic actual production process, it often requires kilograms of materials to roll the prepared filter additives into cigarettes, and the cost is high and wasteful in the trial production process, which also affects the normal production of enterprises.

Patents CN200982968Y and CN201429591Y disclose the cigarette filter additive simulation smoke harm reduction effect evaluation device. The principle is to add a piece of filter material between the cigarette and the smoke catcher to evaluate the adsorption performance of the filter material, but this The addition method simulated by this device is inconsistent with the "Dalmatian" filter addition method currently used in the production of tobacco enterprises in my country (evenly distributed in the acetate fiber)

In addition, adding a piece of filter material often has a local physical blocking effect on smoke that is greater than the adsorption performance of the material itself, so it is not possible to accurately evaluate the adsorption effect of the adsorption material itself

Images