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Filter stick with low smoke filtering efficiency and preparation method thereof

A technology of filtration efficiency and filter rods, which is applied in the fields of e-liquid filter elements, tobacco, food science, etc., can solve problems such as complicated steps, and achieve the effects of simple preparation steps, facilitating smoke transmission, and inhibiting coalescence

Active Publication Date: 2020-07-17
ZHENGZHOU TOBACCO RES INST OF CNTC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of filter rod needs to prepare tow first, and then shape it into a filter rod, which is more complicated.

Method used

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  • Filter stick with low smoke filtering efficiency and preparation method thereof
  • Filter stick with low smoke filtering efficiency and preparation method thereof
  • Filter stick with low smoke filtering efficiency and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Prepare the oil phase first, the composition is 3ml styrene, 1ml methyl methacrylate, 0.5ml ethylene glycol dimethacrylate, 2g emulsifier (the chain length of polyoxyethylene ether is 10), 2.4g modifier The modified silica particles are then configured with an aqueous phase, which consists of 64ml of water, 0.5g of acrylic acid, 1g of polyvinyl alcohol (molecular weight: 50,000), and 0.5g of calcium chloride. Under high-speed stirring at 500 rpm, the water phase was slowly added to the oil phase to form a high internal phase emulsion, which was poured into a filter rod forming mold with a diameter of 7.7 mm and a length of 100 mm, and sealed with nitrogen gas for 10 minutes. Then put it into the 1.3×10 15 Q 60 In the Co source, the dose rate was 36Gy / min, and the irradiation time was 24h. The obtained solid product was extracted with water and ethanol for 24 hours respectively, and dried in a vacuum oven to obtain a final filter rod.

Embodiment 2

[0034] First configure the oil phase, the composition is 1ml styrene, 4ml glycidyl methacrylate, 3ml trimethylolpropane trimethacrylate, 2g emulsifier (the chain length of polyoxyethylene ether is 5), 3g modification Agent-modified silica particles, and then configure the water phase, the composition is 60ml of water, 0.2g of acrylic acid, 2g of polyvinyl alcohol (molecular weight: 80000), 0.5g of sodium chloride. Under high-speed stirring at 500 rpm, the water phase was slowly added to the oil phase to form a high internal phase emulsion, which was poured into a filter rod forming mold with a diameter of 7.0 mm and a length of 120 mm, and sealed with nitrogen gas for 10 minutes. . Then put it into the 1.3×10 15 Q 60 In the Co source, the dose rate is 36Gy / min, and the irradiation time is 36h. The obtained solid product was extracted with water and ethanol for 24 hours respectively, and dried in a vacuum oven to obtain a final filter rod.

Embodiment 3

[0036] First configure the oil phase, the composition is 2ml styrene, 2ml glycidyl methacrylate, 2ml methyl methacrylate, 1ml glycerol tri(α-methacrylic acid) ester, 2g emulsifier (including polyoxyethylene ether The segment length is 12), 4g modifier-modified silica particles, and then configure the water phase, which consists of 70ml water, 0.2g acrylic acid, 1g polyvinyl alcohol (molecular weight: 30000), and 1.5g magnesium sulfate. Under high-speed stirring at 700rpm, slowly add the water phase into the oil phase to form a high internal phase emulsion, pour it into a filter rod forming mold with a diameter of 6.0 mm and a length of 120 mm, and seal it after passing nitrogen gas for 10 minutes. Then put it into the 1.3×10 15 Q 60 In the Co source, the dose rate is 36Gy / min, and the irradiation time is 36h. The obtained solid product was extracted with water and ethanol for 24 hours respectively, and dried in a vacuum oven to obtain a final filter rod.

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Abstract

The invention relates to a filter stick with low smoke filtering efficiency and a preparation method thereof. The filter stick with low smoke filtering efficiency is directly prepared through high internal phase emulsion polymerization in a specific filter stick mold. Compared with a common acetate fiber tow filter stick and a polypropylene tow filter stick at present, according to the filter stick of the invention, acetate fiber tows and polypropylene tows need to be prepared firstly and then formed into the filter stick through filter stick forming equipment, the filter stick has substantivedifferences. According to the filter stick with low smoke filtering efficiency, the filter stick with specific circumference and length can be directly formed in a filter stick forming die, the filter stick has a certain strength and can meet the requirements of tipping cigarettes; the prepared filter stick with low smoke filtering efficiency is provided with micron-sized macropores, and the macropores are communicated with one another such that cigarette smoke can be transmitted; a particle emulsifier is adopted in the preparation process of the filter stick to improve the strength of the filter stick; the particle emulsifier is modified by a modifier, and the modifier has polymerizable double bonds such that high internal phase emulsion polymerization is facilitated; a radiation polymerization method is adopted, no chemical initiator is added, and the disinfection and sterilization effects are achieved.

Description

technical field [0001] The invention belongs to the technical field of filter rod preparation, in particular to a low smoke filtration efficiency filter rod prepared by high internal phase emulsion polymerization and a preparation method thereof. Background technique [0002] Cigarette generally adopts diacetate fiber tow filter rod and polypropylene tow filter rod as filter tip at present. These two kinds of filter sticks are made by first preparing diacetate fiber tow and polypropylene tow, and then molded into filter sticks for regular cigarettes (generally 7.7mm in diameter) and filter sticks for medium-sized cigarettes (generally 7.7mm in diameter) by filter stick forming equipment. 7.0mm or 6.0mm) or a filter rod for slim cigarettes (5.4mm in diameter). But this kind of filter stick needs to prepare tow earlier, and then be shaped into a filter stick, and the steps are more complicated. In addition, the cigarette filter stick invented in the patent "a cigarette filte...

Claims

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Application Information

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IPC IPC(8): A24D3/04C08F212/08C08F220/32C08F220/14C08F222/14C08F220/06C08F2/46C08F2/30
CPCC08F212/08C08F220/32C08F220/14C08F2/46C08F2/30A24D3/04
Inventor 杨松颜权平王宏伟孙九喆王鹏飞谢冰孙学辉孙培健张晓兵聂聪
Owner ZHENGZHOU TOBACCO RES INST OF CNTC
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