Nano porous fiber filter tip additive material for reducing amount of released formonitrile in cigarette smoke, preparation method and application

A material-added, nano-porous technology, applied in application, fiber treatment, e-liquid filter, etc., can solve the problems of unfavorable operation, large loss of cigarette aroma, and high catalytic temperature, and achieves the promotion of full contact, increased specific surface area, Preparation of technically simple effects

Active Publication Date: 2012-04-25
HONGTA TOBACCO GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dilution method will cause a large loss of cigarette aroma and affect the quality of smoking
The catalytic temperature of the catalytic oxidation method is relatively high (such as patents CN1416950A and CN1462652A, the catalytic temperature requires 250 ~ 450 ° C), which is not conducive to operation
In the research on the removal of hydrocyanic acid by adsorption method, the research on activated carbon is more in-depth, but activated carbon can effectively absorb the gas phase components of smoke and reduce the smoking quality of cigarettes, which has great limitations.

Method used

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  • Nano porous fiber filter tip additive material for reducing amount of released formonitrile in cigarette smoke, preparation method and application
  • Nano porous fiber filter tip additive material for reducing amount of released formonitrile in cigarette smoke, preparation method and application
  • Nano porous fiber filter tip additive material for reducing amount of released formonitrile in cigarette smoke, preparation method and application

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Experimental program
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Effect test

preparation example Construction

[0030] The specific steps of the preparation method of the present invention are as follows:

[0031] 1. Add 0.8-2.0 g of tetraisopropyl titanate precursor to 2.0-4.0 mL of absolute ethanol, and add an equal volume of acetic acid, and stir magnetically under dry conditions to mix evenly. The preferred quality of tetraisopropyl titanate is 1.5g, and the volume of absolute ethanol and acetic acid is 3mL;

[0032] 2. Add 0.30 to 0.60 g of polyvinylpyrrolidone (PVP) solution to 2.0 to 4.0 mL of ethanol, preferably with a mass of 0.45 g of polyvinyl pyrrolidone and a volume of 3 mL of ethanol, and stir under dry conditions to obtain a homogeneous solution. The obtained polymer homogeneous solution is quickly added to the titanium dioxide precursor solution prepared in step (1), stirred under dry conditions for 30-90 minutes, and the optimal stirring time is 60 minutes;

[0033] 3. Add the solution prepared in the above step (2) into the syringe, control the voltage between the wor...

Embodiment 1

[0037] Material preparation:

[0038] 1.1.5g tetraisopropyl titanate, 3mL ethanol and 3mL acetic acid were magnetically stirred for 10min;

[0039] 2. Add PVP solution (0.45g PVP dissolved in 3mL ethanol) to the above homogeneous solution, and continue to stir for 1h.

[0040] 3. Add the above precursor solution into the syringe, control the voltage between the working receiving electrode and the needle to 10KV, adjust the distance between the receiver and the spinning needle to 10cm, and the outflow rate of the solution to 0.5mL / h.

[0041] 4. The prepared titanium dioxide fibers were placed in a muffle furnace for calcination at 450° C. for 3 hours, and an electrospun titanium dioxide nanoporous fiber material was obtained after calcination. The specific surface of the nanofiber obtained at last is characterized by nitrogen adsorption (Sorptomatic1990 full-automatic physical and chemical adsorption instrument), and its specific surface area is 98m 2 / g, its shape, length an...

Embodiment 2

[0047] Example 2: The material preparation method is the same as in Example 1. The electrospun titanium dioxide nanoporous fiber material is used as a composite filter additive material, and the addition amount is 30 mg / cig. The cigarette without any filter adsorption material is used as a control sample. The cigarette smoking test was carried out on the smoking machine according to the standard smoking conditions, and the release of hydrocyanic acid was detected according to the standard YCT253-2008. Each sample has three parallel samples, and the results are shown in Table 2.

[0048] Table 2 The addition amount of electrospun titanium dioxide nanomaterials is 30mg / cig

[0049]

[0050] The above results show that the material of the present invention can be used in the production of composite filter cigarettes, can reduce the release of hydrocyanic acid in mainstream cigarette smoke by more than 40%, and does not affect the smoking quality of cigarettes. The material is ...

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Abstract

The invention relates to a nano porous fiber filter tip additive material for selectively reducing the amount of released formonitrile in cigarette smoke, a preparation method and application, and the material, the method and the application belong to the field of cigarette harm and tar reduction. The invention is characterized in that the nano fiber material is a porous TiO2 nano fiber with a large special surface and a high length-to-diameter ratio obtained by the electrospinning technology. The nano fiber material can adsorb the formonitrile under the normal temperature, and when being added into a cigarette filter stick, the material can reduce the content of the formonitrile in the mainstream smoke of a cigarette by more than 40 percent, and does not affect the smoking quality of the cigarette. The preparation technique is simple, and the material can be used for selectively reducing the harm of cigarettes.

Description

technical field [0001] The invention relates to a nanofiber filter tip additive material for selectively reducing the release of hydrocyanic acid in cigarette smoke, a preparation method and application thereof, and belongs to the field of cigarette harm reduction arrays. Background technique [0002] Hydrocyanic acid is a highly volatile and highly toxic substance with a threshold value of only 10ppm to the human body. After being inhaled into the human body, it inhibits the activity of the enzyme and combines with ferricytochrome oxidase to generate cyanide ferricytochrome oxidase, which loses the function of transferring oxygen. Poisoning that causes tissue hypoxia is extremely harmful to human health. Hydrocyanic acid in cigarettes is mainly produced by the combustion and cracking of nitrogen-containing compounds in tobacco, with a content of about 30-300 μg / cig. Hydrocyanic acid in smoke is extremely harmful to the human body after inhalation. Therefore, it is necessary...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A24D3/10D01D5/00D01F9/08
Inventor 白晓莉董伟彭国岗龚荣岗张育光牟定荣
Owner HONGTA TOBACCO GRP
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