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Cigarette filter containing adsorption filtration layer and application thereof

A technology of adsorption filtration and filter tips, which is applied in the field of cigarette filters, can solve the problems that acetate fibers are not easy to interweave and mix, the degradation of ammonia and other components is not obvious, and it is not suitable for large-scale production of cigarette filters. Interweaving and mixing, solving the effect of not obvious degradation of multiple components and strong adsorption force

Active Publication Date: 2013-12-25
CHINA TOBACCO GUIZHOU IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned prior art has the following deficiencies: (1) The degradation of ammonia and other components in the mainstream smoke of cigarettes is not obvious; (2) The additives are fine particles, which are not easy to interweave and mix with cellulose acetate, and are not suitable for cigarette filters. mass production

Method used

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  • Cigarette filter containing adsorption filtration layer and application thereof
  • Cigarette filter containing adsorption filtration layer and application thereof
  • Cigarette filter containing adsorption filtration layer and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Example 1TiO 2 Preparation of Hydrate Nanotubes

[0046] 1. Preparation method:

[0047] Method 1: Add 2 g of commercial grade TiO 2 (P25) was dissolved in 75ml of 10M NaOH solution, the mixture was transferred into a 100mL autoclave and placed in an oil bath, and heated in water at a temperature range of 150°C and a speed of 10r / min for 24h. After the reaction, the white precipitate obtained was washed with distilled water until neutral, then soaked in acid solution for 24 hours, then filtered and washed until neutral, and dried at 60°C to finally obtain TiO 2 Hydrate nanotubes.

[0048] Method 2: Add 0.1 g of commercial grade TiO 2 (P25) was dissolved in 75ml of 8M NaOH solution, and the mixture was transferred into a 100mL autoclave and placed in an oil bath, and hydrothermally heated at a temperature range of 200°C and a speed of 5r / min for 18h. After the reaction, the white precipitate obtained was washed with distilled water to neutrality, then soaked in acid...

Embodiment 2

[0052] The preparation of embodiment 2 cigarette filter tip

[0053] 1. Raw materials

[0054] Processing raw material: TiO 2 Nano powder was purchased from ISHIHARA SANGYO KAISYA, LTD.; acetate fiber was purchased from Guizhou China Tobacco Industry Co., Ltd.; activated carbon fiber was purchased from Nantong Xintong Activated Carbon Fiber Co., Ltd.

[0055] SiO 2 Airgel powder is prepared by acid-base two-step catalytic synthesis method: mix and stir ethyl orthosilicate with a certain amount of ethanol, add hydrochloric acid and ethanol mixed solution for acid catalysis, wait until ethyl orthosilicate is fully hydrolyzed Add a mixed solution of ammonia water and ethanol, carry out alkali catalysis, and finally obtain SiO after aging 2 Sol, resulting in SiO 2 The specific surface area of ​​the sol is 500m 2 / g, the particle size is 6nm (for the specific preparation method, please refer to the patent "A Method for Preparing Superhydrophobic Silica Airgel under Normal Pres...

Embodiment 3

[0066] Example 3 Detection of Filter Adsorption Filtration Effect

[0067] 1. Experimental method

[0068] Experimental object: filter tip is prepared according to Example 2, the adsorption filter layer is located at the front end of the filter rod, wherein the TiO in the adsorption filter layer 2 The mass of hydrate nanotubes is 10% of the total acetate mass, TiO 2 The mass of nano powder is TiO 2 5% of the mass of hydrate nanotubes, and the mass of activated carbon fibers is TiO 2 5% by mass of hydrate nanotubes; SiO 2 The mass of airgel is TiO 2 10% of the mass of hydrate nanotubes. Cigarettes are prepared by using the filter tip to obtain a cigarette with an adsorption filter layer in the filter tip.

[0069] Control: As a control, cigarettes were prepared using a filter tip composed entirely of cellulose acetate.

[0070]Detection method: reference to the detection method of filter adsorption and filtration effect: YC / T377-2010 Determination of ammonia in mainstrea...

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Abstract

The invention relates to the field of cigarette filters, in particular to a cigarette filter containing a TiO2 aquo-complex nanotube, TiO2 nanometer powder, activated carbon fiber, and SiO2 aerogel. The cigarette filter contains an adsorption filtration layer, wherein the adsorption filtration layer is formed by cellulose acetate fiber, the TiO2 aquo-complex nanotube, the TiO2 nanometer powder, the activated carbon fiber, and the SiO2 aerogel. According to the cigarette filter, the strong capacity of the TiO2 aquo-complex nanotub and the TiO2 nanometer powder on adsorbing ammonia, and the adsorption of the activated carbon fiber on tar and CO are creatively utilized, acetaldehyde, acetic acid and heavy metal ion are removed by the SiO2 aerogel, and the ultralong TiO2 aquo-complex nanotube and the activated carbon fiber can be firmly interweaved and mixed with the cellulose acetate fiber, so that the defects that in the prior art, the degradation of various components in main stream smoke of a cigarette is not obvious, and adsorbing agent is not easily interweaved and mixed with the cellulose acetate fiber are solved.

Description

technical field [0001] The invention relates to the field of cigarette filters, in particular to a filter containing ultra-long TiO 2 Hydrate nanotubes, TiO 2 Nanopowder, activated carbon fiber and SiO 2 Aerogel cigarette filters and uses thereof. Background technique [0002] Publication number CN1302570A discloses a novel detoxification cigarette filter and its production method. Its characteristic is that on the basis of the filter layer of the existing filter tip, a layer of adsorption and absorption layer mixed with activated carbon and calcium hydroxide is added, so that the adsorption and absorption layer is close to the filter layer. [0003] Publication No. CN1383764A discloses a method for preparing cigarettes containing loess clay minerals and the cigarette products produced thereby. Its characteristic is to prepare a homogeneous suspension of loess, apply the suspension to cigarette filters, fillers or packages, and then dry it. [0004] Publication No. CN10...

Claims

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Application Information

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IPC IPC(8): A24D3/06
Inventor 刘剑聂长春姬厚伟惠建权黄正虹冯勇田旭刘科乾刘纳纳
Owner CHINA TOBACCO GUIZHOU IND
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