High interface adhesion strength nanofiber composite filament bundle and preparation method and application thereof

Abstract

The invention discloses a high interface adhesion strength nanofiber composite filament bundle and a preparation method and application thereof. The preparation method comprises the following steps: 1, preparing a spinning solution with polymer, additives and solvent, wherein the polymer comprises one or more ingredients out of cellulose diacetate, cellulose triacetate, hydroxyethyl cellulose, polyving akohol and polyving akohol, and the additives comprise one or more ingredients out of ethanediol, glycerol, pentaerythritol, diacetin, glycerol triacetate, glycerol trioleate, glycerol palmitate and glyceryl stearate; 2, taking a cigarette-used filament bundle as base materials, conducting electrostatic spinning on the spinning solution which is obtained in step 1, and obtaining the high interface adhesion strength nanofiber composite filament bundle. By means of the high interface adhesion strength nanofiber composite filament bundle, the phenol release amount and NNK release amount in mainstream smoke of a cigarette can be effectively reduced, the phenol release amount is reduced by 16-30%, and the NNK release amount 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 CN101484628A discloses a method for adhering or trapping nanomaterials such as nanotu...

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.

Images