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A composite tow for reducing crotonaldehyde in flue gas and its preparation method and application

A composite tow, crotonaldehyde technology, applied in the application, tobacco, e-liquid filter and other directions, can solve the problems of low nanofiber, easy to block pores, limited, etc., to achieve large specific surface area, high porosity, strong adsorption capacity. Effect

Active Publication Date: 2019-02-15
CHINA TOBACCO ZHEJIANG IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The Chinese patent document with the patent publication number CN101961135A discloses a method for reducing the release of crotonaldehyde by changing the microwave loosening conditions. This method is simple to operate, but the effect of reducing crotonaldehyde is limited
However, the electrospinning technology using traditional spinnerets is easy to block holes, has low efficiency, and the amount of nanofibers composited on the substrate is low, which cannot reflect the advantages of fiber material characteristics and high specific surface area of ​​nanofibers.

Method used

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  • A composite tow for reducing crotonaldehyde in flue gas and its preparation method and application
  • A composite tow for reducing crotonaldehyde in flue gas and its preparation method and application

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Experimental program
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Effect test

Embodiment 1

[0060] The particle diameter of 1g is that the nano silicon dioxide of 200nm is dispersed in the 0.1wt% acetic acid aqueous solution of 2wt% sodium carboxymethylcellulose (substitution degree is 1.2) of 500g concentration, and then 500g concentration is 0.2wt% shell A 0.1wt% acetic acid aqueous solution of polysaccharide (deacetylation degree 95%) was dropped into the above solution, stirred at 25° C. for 8 hours, and composite nano-silica was obtained by electrostatic compounding.

[0061] Composite nano-silica, cellulose diacetate, ethylene glycol and acetone with a mass ratio of 0.05:0.2:0.01:2 are configured into a uniform spinning solution, and the spinning solution is placed in the carrier liquid of the needleless electrospinning machine In the tank, electrospin under 30kv voltage, adjust the distance between the injection port and the tobacco tow receiving device to 20cm, open the tow to a width of 60cm, and transport the speed to 400m / min, and the spinning solution form...

Embodiment 2

[0065] The particle diameter of 0.01g is that the nano silicon dioxide of 50nm is dispersed in the 0.01wt% acetic acid aqueous solution of 1wt% sodium carboxymethylcellulose (substitution degree is 0.7) in the 0.01wt% acetic acid aqueous solution of 200g concentration, then 200g concentration is 0.1wt% A 0.01wt% acetic acid aqueous solution of chitosan (85% deacetylation degree) was dropped into the above solution, stirred at 15° C. for 12 hours, and composite nano silicon dioxide was obtained through electrostatic composite.

[0066] Then, the composite nano-silica, cellulose diacetate, ethylene glycol and acetone with a mass ratio of 0.005:0.01:0.001:1 are configured to form a uniform spinning solution, and the spinning solution is placed on a needleless electrospinning machine. In the liquid tank, electrospinning under the voltage of 5kv, the distance between the injection port and the tobacco tow receiving device is adjusted to 5cm, the tow is opened to a width of 60cm, the...

Embodiment 3

[0069] The particle diameter of 0.05g is that the nano silicon dioxide of 100nm is dispersed in the 0.05wt% acetic acid aqueous solution of the sodium carboxymethylcellulose (substitution degree is 1.0) of 1wt% concentration in 400g concentration, then 400g concentration is 0.15wt% A 0.05 wt% acetic acid aqueous solution of chitosan (deacetylation degree 95%) was dropped into the above solution, stirred at 20° C. for 10 h, and composite nano silicon dioxide was obtained through electrostatic composite.

[0070]Then, the composite nano-silica, cellulose diacetate, ethylene glycol and acetone with a mass ratio of 0.02:0.015:0.005:1.5 were configured to form a uniform spinning solution, and the spinning solution was placed on the carrier of a needle-free electrospinning machine. In the liquid tank, under the voltage of 20kv, electrospinning, the distance between the injection port and the tobacco tow receiving device is adjusted to 10cm, the tow is opened to a width of 60cm, the c...

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Abstract

The invention discloses a composite tow for reducing crotonaldehyde in smoke as well as a preparation method and application of the composite tow. The preparation method comprises the following steps: carrying out electrostatic compounding on nano silica, a sodium carboxymethylcellulose acetic acid aqueous solution and a chitosan acetic acid aqueous solution so as to obtain composite silica, wherein the feeding mass ratio of nano silica to the sodium carboxymethylcellulose acetic acid aqueous solution to the chitosan acetic acid aqueous solution is (0.01-1):(200-500):(200-500); and depositing composite silica on the surface of a cigarette tow through an electrostatic spinning method, so as to obtain the composite tow. The composite tow has the advantages as follows: the used raw materials are convenient and easy to obtain, the price is low, and a cigarette filter prepared by adopting the composite tow disclosed by the invention enables the release amount of crotonaldehyde in cigarette smoke to be reduced by 25-37%.

Description

technical field [0001] The invention relates to the technical field of tar reduction and harm reduction of cigarettes, in particular to a composite tow for reducing crotonaldehyde in smoke, a preparation method and application thereof. Background technique [0002] As all walks of life pay more and more attention to the health problems caused by smoking, the research on tar reduction and harm reduction technology of cigarette products has also been paid more and more attention by the tobacco industry. Aiming at various harmful components in cigarette smoke, researchers have developed a variety of harm reduction technologies, such as tipping filters, applying filter ventilation dilution technology, using cigarette paper with high air permeability and fast static burning rate, blending Methods such as expanded shredded tobacco and expanded cut stems. Among them, the modification of cigarette filters, such as adding or compounding biological materials, polymer materials and na...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A24D3/06
Inventor 储国海周国俊徐志康沈凯朱强安全福李霞李海锋杜芳琪胡雅军
Owner CHINA TOBACCO ZHEJIANG IND