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Nanofiber composite tow with high interfacial adhesion strength and its preparation method and application

A nanofiber and composite tow technology, applied in the field of cigarettes, can solve the problems of not how to improve the adhesion strength of the nanofiber and tow interface, lack of strong interaction force or adhesion force, hinder continuous production, etc., to achieve long-term Time spinning, good cohesion, constant concentration effect

Active Publication Date: 2017-11-17
CHINA TOBACCO ZHEJIANG IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the electrospinning process, the nanofibers are mainly deposited on the surface of the tow in the form of physical accumulation, and there is a lack of strong interaction or adhesion between the two during the composite process.
In research practice, it is found that the nanofiber composite tow formed by physical accumulation has low interfacial adhesion strength, and the nanofibers are easy to fall off. In the process of making cigarette filter rods, floating flocs will be produced, which hinders the continuous production. Serious Affect the quality of the filter rod
[0006] At present, there are no literature reports on how to improve the interfacial adhesion strength between nanofibers and tows, and there are no technologies and processes available for practical production applications.

Method used

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  • Nanofiber composite tow with high interfacial adhesion strength and its preparation method and application
  • Nanofiber composite tow with high interfacial adhesion strength and its preparation method and application
  • Nanofiber composite tow with high interfacial adhesion strength and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0042] Prepare 8g of cellulose diacetate, 8g of glycerol and 100g of acetone to form a uniform spinning solution, wherein the mass ratio of cellulose diacetate to acetone is 0.08:1, and the mass ratio of glycerol to cellulose diacetate is 1:1 . The spinning solution is placed in the liquid-carrying tank of the needleless electrospinning machine, the distance between the spinning electrode wire and the tow (that is, the receiving distance) is adjusted to 15cm, and the spinning voltage is adjusted to 32kV; The bundle is opened to a width of 25 cm, and the delivery speed of the tobacco tow is set to be 100 m / min.

[0043] Turn on the power supply of the electrospinning machine to the set voltage, and the spinning solution forms nanofibers with a diameter of 110±32nm, and deposits on the surface of the continuously moving open tobacco tow to form a nanofiber composite tow; After the nanofiber composite tow passes through the electrospinning area, it enters the infrared lamp bakin...

Embodiment 2

[0047] Prepare 8g of cellulose triacetate, 8g of ethylene glycol and 100g of N,N-dimethylformamide into a uniform spinning solution, wherein the mass ratio of cellulose triacetate to N,N-dimethylformamide is 0.08:1, The mass ratio of ethylene glycol to cellulose triacetate is 1:1. Put the spinning solution in the liquid-carrying tank of the needleless electrospinning machine, adjust the distance between the spinning electrode iron wire and the tobacco tow to 15cm, and adjust the spinning voltage to 32kV; loosen the tobacco tow To a width of 25 cm, set the delivery rate of the tobacco tow to 100 m / min.

[0048] Turn on the power supply of the electrospinning machine to the set voltage, and the spinning solution forms nanofibers with a diameter of 120±32nm, and deposits on the surface of the continuously moving open tobacco tow to form a nanofiber composite tow; After the nanofiber composite tow passes through the electrospinning area, it enters the infrared lamp baking area an...

Embodiment 3

[0051] 4g of hydroxyethyl cellulose, 4.4g of pentaerythritol and 100g of acetone are configured into a uniform spinning solution, wherein the mass ratio of hydroxyethyl cellulose to acetone is 0.04:1, and the mass ratio of pentaerythritol to hydroxyethyl cellulose is 1.1: 1. Put the spinning solution in the liquid-carrying tank of the needleless electrospinning machine, adjust the distance between the spinning electrode iron wire and the tobacco tow to 15cm, and adjust the spinning voltage to 32kV; loosen the tobacco tow To a width of 25 cm, set the delivery rate of the tobacco tow to 400 m / min.

[0052] Turn on the power supply of the electrospinning machine to the set voltage, and the spinning solution forms nanofibers with a diameter of 95±20nm, and deposits on the surface of the continuously moving open tobacco tow to form a nanofiber composite tow; After the nanofiber composite tow passes through the electrospinning area, it enters the infrared lamp baking area and is ba...

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Abstract

The invention discloses a nanofiber composite filament bundle with high interfacial adhesion strength and its preparation method and application, wherein the preparation method comprises the following steps: (1) preparing a polymer, an additive and a solvent into a spinning solution; the polymer It is at least one of cellulose diacetate, cellulose triacetate, hydroxyethyl cellulose, polyvinyl alcohol, chitosan; the additive is ethylene glycol, glycerol, pentaerythritol, glyceryl diacetate, three At least one of glyceryl acetate, glycerol trioleate, glyceryl palmitate, glyceryl stearate; (2) taking tobacco tow as the base material, the spinning solution obtained in step (1) is processed Electrospinning to obtain the composite tow of nanofibers with high interfacial adhesion strength. The nanofiber composite tow with high interfacial adhesion strength disclosed by the invention can effectively reduce the release of phenol and NNK in cigarette mainstream smoke, the release of phenol is reduced by 16-30%, and the release of NNK is reduced by 12-36%.

Description

technical field [0001] The invention relates to the technical field of cigarettes, in particular to a nanofiber composite tow with high interfacial adhesion strength and a preparation method and application thereof. Background technique [0002] Attaching filters to cigarettes is the most direct and effective means in current cigarette harm and tar reduction technologies. Filters can absorb some harmful components in cigarette smoke, such as intercepting the total particulate matter in mainstream smoke of cigarettes, reducing tar Content, adsorption of harmful substances, thereby reducing the harm to the human body. [0003] The filter tips commonly used at present are made of cellulose acetate tow or polypropylene tow. The specific surface area, thereby enhancing the ability of the filter rod to absorb harmful substances. For example, the invention patent document with publication number CN 101484628A discloses a method for adhering or trapping nanomaterials such as nanot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F2/28D01F6/50D01F1/10A24D3/02A24D3/04
Inventor 徐志康储国海朱强万灵书王辉智锁红杨帅沈凯李海锋童神
Owner CHINA TOBACCO ZHEJIANG IND
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