Preparation method of cigarette tow containing composite phase change material

Abstract

The invention belongs to the technical field of polymer composite materials, and relates to a preparation method of a cigarette tow containing a composite phase-change material. The preparation method comprises the following steps: uniformly mixing polypropylene, whitening master batch, vinyl acetate and a copolymer thereof with the composite phase-change material according to a mass ratio of (25-10): (1-3): (1-4): (3-8), and fully drying to obtain a composite material, wherein the crystalline hydrate comprises but is not limited to mirabilite, alum, goslarite and chalcanthite, the cooling particles are polylactic acid particles, glyceryl tristearate, glyceryl monostearate and glyceryl distearate, the composite phase change material is prepared by melting crystalline hydrate and cooling particles at high temperature, stirring and mixing uniformly and then cooling, and melt spinning is performed in a spinning machine; and after stretching, carrying out immersion cleaning, water washing, curling and low-temperature and low-pressure drying in an alcohol solution. The preparation method is simple, and an existing polypropylene tow production line can be used for production. The prepared composite phase change material-containing fiber for the cigarette filter tip has positive effects on smoke cooling and adsorption of harmful substances in smoke.

Description

technical field [0001] The invention belongs to the technical field of polymer composite materials, and relates to tobacco tow, in particular to a method for preparing tobacco tow containing a composite phase change material. Background technique [0002] After the shredded tobacco of traditional cigarettes is ignited, the shredded tobacco is incompletely oxidized and burned, and the smoke is released continuously. Released, the smoke will also carry a lot of heat into the mouth. These two different types of tobacco products have a common phenomenon, as the number of puffs increases, the temperature of the smoke entering the mouth becomes higher and higher, especially in the last few puffs, the burning sensation in the mouth is extremely strong . [0003] There are generally three methods of cooling smoke commonly used in the cigarette industry: the first is to punch holes in the filter tip, and the external cold air is mixed with the smoke to cool down when smoking; the s...

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Problems solved by technology

[0004] The above three methods all have their disadvantages: Although the method of perforating the filter to introduce cold air to cool down the temperature is obvious, but after the cold air is mixed with the flue gas, the concentration of the flue gas is reduced, and the quality of the flue gas is reduced to a certain extent. Cigarette smoking has a negative effect on the sense of smoking; adding cooling substances to the filter can reduce the temperature of the smoke very well, but the production process is relatively complicated and requires some modification of the production equipment, and the addition of cooling substances will reduce the cost of the filter. The corresponding increase does not take advantage of large-scale applications; the lengthening of the filter tip uses the inert heat conduction performance of the tobacco tow itself to cool down, and the effect is not obvious, because the heat absorption capacity of the tobacco tow is not strong, and the filter tip that is too long will affect the quality of flue gas

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