Preparation of functional nanometer short fiber and its application in cigarette filter tip

Abstract

The invention relates to a preparation of the function nanometer short fiber. It is mainly utilized the electrostatic spinning technique to quickly draw and transform the polymer solution to solid superfine fiber in high voltage electric field, produce nanometer fiber whose diameter is form fifty nanometers to one thousand nanometers. The fiber is directly collected in the water, and accelerated to collect by using the circulating water vacuum pump. It is utilized the shearing effect caused by the high velocity flow while the forming of the vacuum to quickly shear the collected nanometer long fiber into short one whose length is several millimeters. The catalyst is added in to the spinning liquid while the nanometer is preparing. The cellulose acetate nanometer short fiber and the filter tip fiber filament tow that is prepared by the above method are compounded to manufacture cigar filter. Not only can the compounded filter body effectively increase the filter efficiency of the inhalator grain with the submicron grade and nanometer grade, but also greatly increase the filter area at the same time to effectively reduce the content of the tar and other chemical composition in the smog.

Description

technical field

[0001] The invention relates to the technical field of preparation of functional nano-short fiber materials, in particular to the preparation of functional nano-short fibers and their application in cigarette filters. Background technique

[0002] Smoking produces a large amount of harmful substances, which not only endanger the health of smokers, but also pollute the surrounding environment. Generally speaking, a cigarette can produce about 400 to 500 mg of smoke, 90% of which are relatively harmless gas components, such as nitrogen, oxygen, carbon dioxide and water. And other about 4.5% substances (about 22.5 mg) are tar components, and 1.35% (about 6.7 mg) small molecule chemical vapors in addition. Tar contains at least 3,500 kinds of organic substances, and there are about 400 to 500 kinds of small molecules in smoke. Among these substances, at least 43 substances have obvious carcinogenic effects. In addition, there are carbon monoxide and a large nu...

Examples

Embodiment Construction

[0028] The present invention mainly uses cellulose acetate for cigarettes, cellulose diacetate and cellulose triacetate on the polymer material. It is best to use cellulose diacetate for tobacco use. The spinning solution uses acetone, acetone-water or acetone-dimethylacetamide as solvent, and the best solvent system is acetone-water (80:20 by volume). The concentration of cellulose acetate in the spinning solution is 4-16%, and the optimum concentration range is 8-12%. Catalysts such as heme, hemin, metal molybdate, and metal rubidium salt can be added to the spinning solution. The best catalyst is heme, and the concentration range is 0.5-2.5%.

[0029] During the electrospinning process, a tubular multi-jet electrospinning device (see figure 1 ), the resulting nanofibers were directly deposited in circulating water. The voltage range for spinning is 12KV-32KV, and the optimum voltage range is 18KV-26KV. The polymer flow rate of each nozzle is 5-35 ml / hour, and the optimu...

technical field

[0001] The invention relates to the technical field of preparation of functional nano-short fiber materials, in particular to the preparation of functional nano-short fibers and their application in cigarette filters. Background technique

[0002] Smoking produces a large amount of harmful substances, which not only endanger the health of smokers, but also pollute the surrounding environment. Generally speaking, a cigarette can produce about 400 to 500 mg of smoke, 90% of which are relatively harmless gas components, such as nitrogen, oxygen, carbon dioxide and water. And other about 4.5% substances (about 22.5 mg) are tar components, and 1.35% (about 6.7 mg) small molecule chemical vapors in addition. Tar contains at least 3,500 kinds of organic substances, and there are about 400 to 500 kinds of small molecules in smoke. Among these substances, at least 43 substances have obvious carcinogenic effects. In addition, there are carbon monoxide and a large nu...

Examples

Embodiment Construction

[0028] The present invention mainly uses cellulose acetate for cigarettes, cellulose diacetate and cellulose triacetate on the polymer material. It is best to use cellulose diacetate for tobacco use. The spinning solution uses acetone, acetone-water or acetone-dimethylacetamide as solvent, and the best solvent system is acetone-water (80:20 by volume). The concentration of cellulose acetate in the spinning solution is 4-16%, and the optimum concentration range is 8-12%. Catalysts such as heme, hemin, metal molybdate, and metal rubidium salt can be added to the spinning solution. The best catalyst is heme, and the concentration range is 0.5-2.5%.

[0029] During the electrospinning process, a tubular multi-jet electrospinning device (see figure 1 ), the resulting nanofibers were directly deposited in circulating water. The voltage range for spinning is 12KV-32KV, and the optimum voltage range is 18KV-26KV. The polymer flow rate of each nozzle is 5-35 ml / hour, and the optimu...

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