CN203986075U - A kind of nitrogen-doped carbon nanometer pipe composite cigarette filter tip - Google Patents

Abstract

The utility model relates to a kind of nitrogen-doped nanometer carbon pipe composite cigarette filter tip.This filter tip is mainly made up of filtering bodies and outsourcing paper web, and wherein said filtering bodies part is divided into again two-stage structure, and one section is the nitrogen-doped nanometer carbon pipeline section of nearly cigarette section, and another section is the cellulose acetate segment of nearly mouth section.Described nitrogen-doped nanometer carbon pipeline section is made up of nitrogen-doped nanometer carbon pipe and acetate silk, and described external packing paper web is coated on filtering bodies outside and forms described cigarette filter.The utility model nitrogen-doped nanometer carbon pipe composite cigarette filter tip can less affect cigarette mouthfeel in, effectively adsorb the harmful substance in flue gas, reduce the impact of harmful substances in flue gas on health.

Description

A nitrogen-doped carbon nanotube composite cigarette filter

technical field

The utility model relates to a nitrogen-doped carbon nanotube composite cigarette filter tip, which is used for reducing harmful components in smoke.

Background technique

The mainstream smoke produced during the burning of cigarettes contains a large number of chemical substances, including tar, nicotine, ammonia (NH3), hydrocyanic acid (HCN), low molecular aldehydes (acetaldehyde, propionaldehyde, crotonaldehyde, etc.) and Volatile gas (VOC), etc., these chemical substances are mixed with each other and partly enter the smoker's body after passing through the cigarette filter in the form of aerosol. The role of the cigarette filter is mainly to reduce the harmful components entering the human body by increasing the frequency of mutual collision and agglutination of smoke particles and adsorption.

At present, commercially available cigarettes usually use cellulose acetate tow as the filter. In order to further reduce volatile and semi-volatile organic poisons, some active components are added to some cigarette filters, such as porous activated carbon. It has been proved that porous activated carbon is effective in removing At the same time as some harmful substances in the smoke, some aromatic compounds in the smoke are also removed, resulting in insufficient aroma and affecting the flavor of the cigarette; When used as a cigarette filter, the taste of its active components can easily change the flavor of cigarettes. Therefore, adding suitable active components can effectively absorb harmful substances in the smoke, and at the same time, a cigarette filter that has less impact on the taste and quality of cigarettes has become the basic Technical problems that urgently need to be solved in the field.

Utility model content

The utility model discloses a nitrogen-doped carbon nanotube composite cigarette filter tip, which aims at overcoming the drawbacks of existing cigarette filter tips affecting the taste of cigarettes and being unable to effectively absorb harmful substances in smoke in the prior art. The newly designed nitrogen-doped carbon nanotube composite cigarette filter not only greatly improves the adsorption capacity of harmful substances in smoke, effectively reduces the harm to human health, but also maintains the original quality and aroma of cigarettes.

The technical scheme of the utility model is achieved in that:

A nitrogen-doped carbon nanotube composite cigarette filter, which is composed of a filter body and an outer wrapping paper tube, and is characterized in that: the filter body has a two-section structure, including a nitrogen-doped carbon nanotube section near the shredded tobacco section and a section near the mouth The cellulose acetate section, the nitrogen-doped carbon nanotube section of the near-smoke section is composed of nitrogen-doped carbon nanotubes and cellulose acetate tow, and the nitrogen-doped carbon nanotubes are evenly distributed on the cellulose acetate tow, The outer wrapping paper tube wraps the filter body to form the cigarette filter tip.

The nitrogen-doped carbon nanotube segment has a length of 1.0-2.2 centimeters.

For the nitrogen-doped nanotube segments, the nitrogen-doped carbon nanotubes are added in an amount of 0.5-2 mg/mm.

In the nitrogen-doped carbon nanotube segment, the mass ratio of nitrogen to carbon nanotube is 0.1-1.

The utility model has the following advantages and positive effects:

1. Nitrogen-doped carbon nanotubes have good stability, large specific surface area, and regular and complete surface pore structure. At the same time, since more active sites are introduced on the surface after nitrogen doping, it has less adsorption of aroma substances in cigarettes and less impact on smoke. It has the characteristics of high selective adsorption of particulate tar substances and phenolic substances. While slightly affecting the flavor of cigarettes, it can effectively reduce the content of tar substances and harmful substances in smoke, so as to better protect the health of smokers.

2. Nitrogen-doped carbon nanotubes are non-toxic to organisms. They are chemically bonded to the surface of cellulose acetate tow and are not easy to fall off. They can be made into ideal filter composite materials.

Description of drawings

Fig. 1 is the structural representation of the nitrogen-doped carbon nanotube composite filter of the present utility model;

Fig. 2 is a schematic diagram of the structure of the nitrogen-doped carbon nanotube segment near the smoke in the filter.

1. Paper tube, 2. Filter body, 21. Nitrogen-doped carbon nanotube segment, 22. Cellulose acetate segment, 211. Nitrogen-doped carbon nanotube, 212. Acetate cellulose tow.

Detailed ways

The utility model is described in detail below in conjunction with accompanying drawings and embodiments.

A nitrogen-doped carbon nanotube composite cigarette filter, the structure of which is shown in FIG. The filter body 2 is a two-section structure, including a nitrogen-doped carbon nanotube section 21 near the cut tobacco section and a cellulose acetate section 22 near the mouth section, and the nitrogen-doped carbon nanotube section 21 near the tobacco section is made of nitrogen-doped Heterogeneous carbon nanotubes 211 and cellulose acetate tows 212.

As shown in FIG. 2 , nitrogen-doped carbon nanotubes 211 are evenly distributed on the acetate tow 212 .

The outer wrapping paper tube 1 wraps the outside of the filter body 2 to form the cigarette filter.

Among them: the length of the nitrogen-doped carbon nanotube segment is 1.0-2.2 cm; the addition amount of the nitrogen-doped carbon nanotube is 0.5-2 mg/mm; the mass ratio of nitrogen to the carbon nanotube in the nitrogen-doped carbon nanotube segment is: 0.1 -1.

When smoking, ignite the cigarette, and after the smoke passes through the nitrogen-doped carbon nanotube segment 21, the nitrogen-doped carbon nanotube has good stability, large specific surface area, and the surface pore structure is regular and complete. The active site can greatly increase the adsorption capacity of tar particles and aldehydes in the smoke, which can effectively reduce the content of harmful substances in the smoke while slightly affecting the flavor of the cigarette; and then pass through the cellulose acetate section near the mouth 22. Further filter harmful substances, so as to better protect the health of smokers.

Claims (4)

1. a nitrogen-doped nanometer carbon pipe composite cigarette filter tip, formed by filtering bodies, outsourcing paper web, it is characterized in that: described filtering bodies is two-stage structure, comprise the nitrogen-doped nanometer carbon pipeline section of nearly pipe tobacco section and the cellulose acetate segment of nearly mouth section, the nitrogen-doped nanometer carbon pipeline section of described nearly cigarette section is made up of nitrogen-doped nanometer carbon pipe and acetate silk, nitrogen-doped nanometer carbon pipe is evenly distributed on described acetate silk, and outsourcing paper web is coated on the described cigaratte filter of the outer formation of filtering bodies.

2. nitrogen-doped nanometer carbon pipe composite cigarette filter tip according to claim 1, is characterized in that: the length of described nitrogen-doped nanometer carbon pipeline section is 1.0-2.2 centimetre.

3. nitrogen-doped nanometer carbon pipe composite cigarette filter tip according to claim 1, is characterized in that: described nitrogen-doped nanometer pipeline section, the addition of nitrogen-doped nanometer carbon pipe is 0.5-2mg/mm.

4. nitrogen-doped nanometer carbon pipe composite cigarette filter tip according to claim 1, is characterized in that: described nitrogen-doped nanometer carbon pipeline section, the mass ratio of nitrogen and carbon is 0.1-1.