阅读说明：本技术 一种用于降低卷烟烟气中丙醛的复合滤棒及卷烟 (Composite filter stick for reducing propionaldehyde in cigarette smoke and cigarette ) 是由 周骏 徐同广 解晓翠 芦楠 张�杰 矫海楠 王丽达 蒋成勇 马雁军 白若石 于 2021-08-25 设计创作，主要内容包括：本发明提供一种用于降低卷烟烟气中丙醛的复合滤棒及卷烟。所述复合滤棒用于与卷烟本体连接,所述复合滤棒由第一醋酸纤维滤棒和添加了MOF-199、石墨烯改性活性炭、亚油酸修饰纳米硅基氧化物的第二醋酸纤维滤棒组合构成；其中,所述MOF-199的最可几孔径为0.9～1.1nm,所述石墨烯改性活性炭中0.8～2nm孔径的孔占比大于80％。该复合滤棒能够降低卷烟的刺激性,同时不影响卷烟的整体香气量及风格特征,提升了口腔柔顺度、舒适性,改善了吸味品质；且添加材料无毒无害,来源充足,制作方便,成本低廉。(The invention provides a composite filter stick for reducing propionaldehyde in cigarette smoke and a cigarette. The composite filter stick is used for being connected with a cigarette body and is formed by combining a first acetate fiber filter stick and a second acetate fiber filter stick added with MOF-199, graphene modified activated carbon and linoleic acid modified nano silicon-based oxide; the largest probable pore diameter of the MOF-199 is 0.9-1.1 nm, and the ratio of pores with pore diameters of 0.8-2 nm in the graphene modified activated carbon is more than 80%. The composite filter stick can reduce the irritation of cigarettes, does not influence the overall aroma quantity and style characteristics of the cigarettes, improves the smoothness and comfort of the oral cavity, and improves the smoking quality; and the added materials are non-toxic and harmless, have sufficient sources, are convenient to prepare and have low cost.)

1. A composite filter stick for reducing propionaldehyde in cigarette smoke is used for being connected with a cigarette body and is characterized in that the composite filter stick is formed by combining a first acetate fiber filter stick and a second acetate fiber filter stick added with MOF-199, graphene modified activated carbon and linoleic acid modified nano silicon-based oxide;

the largest probable pore diameter of the MOF-199 is 0.9-1.1 nm, and the ratio of pores with pore diameters of 0.8-2 nm in the graphene modified activated carbon is more than 80%.

2. The composite filter stick for reducing propionaldehyde in cigarette smoke according to claim 1, wherein the particle size of the MOF-199 is 60-80 meshes;

and/or the pore volume of the MOF-199 is 0.5-0.8 mL/g.

3. The composite filter stick for reducing propionaldehyde in cigarette smoke according to claim 1 or 2, wherein the particle size of the graphene modified activated carbon is 40-60 meshes;

and/or the pore volume of the graphene modified activated carbon is 0.9-1.2 mL/g.

4. The composite filter stick for reducing propionaldehyde in cigarette smoke according to any one of claims 1 to 3, wherein the graphene modified activated carbon is obtained by dipping activated carbon in a graphene deionized water dispersion solution, filtering and drying;

and/or the linoleic acid modified nano silicon-based oxide is generated by reacting nano silicon dioxide and linoleic acid at 50-70 ℃.

5. The composite filter stick for reducing propionaldehyde in cigarette smoke according to any one of claims 1 to 4, wherein the addition amount of MOF-199 in the second cellulose acetate fiber filter stick is 26-30 mg/filter.

6. The composite filter stick for reducing propionaldehyde in cigarette smoke according to any one of claims 1 to 5, wherein the addition amount of graphene modified activated carbon in the second cellulose acetate fiber filter stick is 13-15 mg/filter.

7. The composite filter stick for reducing propionaldehyde in cigarette smoke according to any one of claims 1 to 6, wherein the addition amount of the linoleic acid modified nano silicon-based oxide in the second acetate fiber filter stick is 2-5 mg/filter.

8. The composite filter stick for reducing propionaldehyde in cigarette smoke according to any one of claims 1 to 7, wherein the length of the first acetate fiber filter stick is 8-12 mm, and the length of the second acetate fiber filter stick is 15-20 mm.

9. The composite filter stick for reducing propanal in cigarette smoke according to any one of claims 1 to 8, wherein one end of said second cellulose acetate filter stick is connected to said first cellulose acetate filter stick, and the other end is connected to said cigarette body.

10. A cigarette comprising the composite filter rod for reducing propanal in cigarette smoke of any one of claims 1 to 9.

Technical Field

The invention belongs to the technical field of cigarette filter sticks, and particularly relates to a composite filter stick for reducing propionaldehyde in cigarette smoke and a cigarette.

Background

Volatile carbonyl compounds, phenolic compounds, ammonia and other substances with low molecular weight in the smoke have the irritant effect. These substances not only stimulate the taste reception and sensory nerves of the oral cavity, but also stimulate sensory nerve endings, which have a negative effect on the sensory quality of cigarettes. Propionaldehyde is a common carbonyl compound in smoke, has strong asphyxiating pungent smell at a high concentration, and reflects that strong irritability and obvious offensive odor appear on the sensory quality of cigarette mainstream smoke.

Disclosure of Invention

The invention provides a composite filter stick for reducing propionaldehyde in cigarette smoke, which can reduce the irritation of cigarettes, does not influence the overall aroma quantity and style characteristics of the cigarettes, improves the oral flexibility and comfort and improves the smoking quality.

Specifically, the invention provides the following technical scheme:

a composite filter stick for reducing propionaldehyde in cigarette smoke is used for being connected with a cigarette body and is formed by combining a first acetate fiber filter stick and a second acetate fiber filter stick added with MOF-199, graphene modified activated carbon and linoleic acid modified nano silicon-based oxide;

the largest probable pore diameter of the MOF-199 is 0.9-1.1 nm, and the ratio of pores with pore diameters of 0.8-2 nm in the graphene modified activated carbon is more than 80%.

The inventor discovers that an MOF-199 material with a specific pore structure, graphene modified activated carbon with a specific microporous structure and linoleic acid modified nano silicon-based oxide with a polar functional group are combined and added into a filter stick according to a certain using amount proportion to process into a functional composite filter stick in the research and development process of a cigarette filter stick manufacturing process, and the functional composite filter stick is applied to a mixed type cigarette, so that the appropriate reduction of irritant component propionaldehyde in the mixed type cigarette smoke is favorably realized, the smoke is fine and smooth, and the smoothness is enhanced; reducing miscellaneous gas and increasing the purity of the cigarette fragrance; meanwhile, the whole aroma amount and style characteristics of the cigarette are not influenced, and the improvement and promotion of the smoke smell of the mixed type cigarette are realized.

Preferably, in the composite filter stick for reducing propionaldehyde in cigarette smoke, the particle size of the MOF-199 is 60-80 meshes;

and/or the pore volume of the MOF-199 is 0.5-0.8 mL/g. Under the particle size and the pore volume, the chemical adsorption of the MOF-199 and propionaldehyde in the flue gas can be further ensured.

Preferably, in the composite filter stick for reducing propionaldehyde in cigarette smoke, the particle size of the graphene modified activated carbon is 40-60 meshes;

and/or the pore volume of the graphene modified activated carbon is 0.9-1.2 mL/g. Under the particle size and pore volume, the physical adsorption effect of the graphene modified activated carbon and propionaldehyde in the flue gas can be further ensured.

Preferably, in the composite filter stick for reducing propionaldehyde in cigarette smoke, the graphene modified activated carbon is obtained by dipping activated carbon into a graphene deionized water dispersion solution, filtering and drying.

Preferably, in the composite filter stick for reducing propionaldehyde in cigarette smoke, the linoleic acid modified nano silicon-based oxide is generated by reacting nano silicon dioxide and linoleic acid at 50-70 ℃. The preparation at the temperature can further ensure the physical adsorption of the linoleic acid modified nano silicon-based oxide and propionaldehyde in the smoke.

Preferably, in the composite filter stick for reducing propionaldehyde in cigarette smoke, the addition amount of the MOF-199 in the second acetate fiber filter stick is 26-30 mg/filter.

Preferably, in the composite filter stick for reducing propionaldehyde in cigarette smoke, the addition amount of the graphene modified activated carbon in the second cellulose acetate fiber filter stick is 13-15 mg per cigarette.

Preferably, in the composite filter stick for reducing propionaldehyde in cigarette smoke, the addition amount of the linoleic acid modified nano silicon-based oxide in the second acetate fiber filter stick is 2-5 mg per cigarette.

Under the addition of the MOF-199, the graphene modified activated carbon and the linoleic acid modified nano silicon-based oxide, the propionaldehyde can be properly adsorbed, so that the irritation is reduced, and the original fragrance style is not influenced.

Preferably, in the composite filter stick for reducing propionaldehyde in cigarette smoke, the length of the first acetate fiber filter stick is 8-12 mm, and the length of the second acetate fiber filter stick is 15-20 mm.

Preferably, in the composite filter stick for reducing propionaldehyde in cigarette smoke, one end of the second acetate fiber filter stick is connected with the first acetate fiber filter stick, and the other end of the second acetate fiber filter stick is connected with the cigarette body.

The invention also provides a cigarette, which comprises the composite filter stick for reducing propionaldehyde in cigarette smoke.

The invention has the following beneficial effects:

the composite filter stick for reducing propionaldehyde in cigarette smoke provided by the invention can reduce the irritation of cigarettes, does not influence the overall aroma quantity and style characteristics of the cigarettes, improves the smoothness and comfort of the oral cavity, and improves the smoking quality; and the added materials are non-toxic and harmless, have sufficient sources, are convenient to prepare and have low cost.

Drawings

Fig. 1 is a schematic structural diagram of a cigarette according to embodiment 1 of the present invention, wherein the cigarette comprises a 1-composite filter rod, a 2-cigarette body, a 3-first acetate fiber filter rod, and a 4-second acetate fiber filter rod.

Detailed Description

The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention. The examples do not show the specific techniques or conditions, according to the technical or conditions described in the literature in the field, or according to the product specifications.

In the following examples, the equipment and the like used are not shown to manufacturers, and are all conventional products available from regular vendors. The process is conventional unless otherwise specified, and the starting materials used are commercially available from published sources.

In the following examples, the linoleic acid modified nano-silica-based oxide was prepared by the following method: sodium silicate and hydrochloric acid are used as raw materials, 1-5% of nonionic surfactant is added into reaction liquid, and SiO is formed through precipitation reaction₂And (4) precipitating. Mixing SiO₂Mixing the precipitate with an amount of ethanol to form alcohol-dispersed SiO₂Drying, calcining at high temperature to obtain nano SiO₂And (3) powder materials. Adding a certain amount of linoleic acid and nano SiO into the normal hexane solvent₂Powder (linoleic acid and nano SiO)₂In a molar ratio of about 1:5), ultrasonically oscillating, and stirring at 60 ℃ for reacting for 4 hours. Separating, washing, airing and vacuum drying the obtained product to obtain white powder, namely the linoleic acid modified nano silicon-based oxide.

In the following examples, the MOF-199 used had a mode of 0.94nm in the most probable pore diameter, a particle size of 60 to 80 mesh, a pore volume of 0.8mL/g and a specific surface area of 1365m²The preparation method comprises the following steps: dissolving 2g of hydrated copper nitrate and 1g of trimesic acid in 51mL of mixed solvent of diformamide, ethanol and water with the volume ratio of 1:1:1, transferring the mixed solution into a polytetrafluoroethylene high-pressure reaction kettle, carrying out hydrothermal reaction for 4 hours at 100 ℃, cooling to room temperature, washing with dimethylformamide, and finally drying to obtain the copper nitrate/water composite material.

In the following examples, the pore size distribution of the graphene modified activated carbon is 80% of pores with pore diameters of 0.8-2 nm and 20% of pores with pore diameters of 2-100 nm; the particle size is 40-60 meshes, the pore volume is 1.1mL/g, and the specific surface area is 782m²The preparation method comprises the following steps: adding 50g of coconut shell activated carbon into 200mL of graphene suspension with the concentration of 1mg/mL under the stirring condition, fully soaking, and freeze-drying to obtain the graphene modified activated carbon material.

Example 1

As shown in FIG. 1, the embodiment provides a common cigarette with a length of 84mm and a circumference of 24.35mm, which comprises a composite filter stick 1 and a cigarette body 2 which are connected with each other; the composite filter stick 1 is formed by combining a first acetate fiber filter stick 3 and a second acetate fiber filter stick 4 added with MOF-199, graphene modified activated carbon and linoleic acid modified nano silicon-based oxide; one end of the second acetate fiber filter stick 4 is connected with the first acetate fiber filter stick 3, and the other end is connected with the cigarette body 2.

In the embodiment, the length of the composite filter stick 1 is 25mm, wherein the length of the first acetate fiber filter stick 3 is 10mm, and the length of the second acetate fiber filter stick 4 is 15 mm; the length of the cigarette body 2 is 59 mm.

In this embodiment, in the second cellulose acetate filter rod 4, the addition amount of the MOF-199 is 30 mg/count, the addition amount of the graphene modified activated carbon is 15 mg/count, and the addition amount of the linoleic acid modified nano silicon-based oxide is 5 mg/count.

In the manufacturing of the second acetate fiber filter rod 4 of the embodiment, after acetate fiber tows are sufficiently loosened, the linoleic acid modified nano silicon-based oxide and the plasticizer triacetyl glycerine are mixed according to the mass ratio of 1:10 and then added into the acetate fiber tows so as to improve the processing hardness and performance of the filter rod, and then the mixed MOF-199 and graphene modified activated carbon are added through the solid particle feeding device and are rolled and molded.

The analysis results of propionaldehyde in the cigarette smoke of this example are shown in table 1 below. The blank control differs from the present embodiment only in that: the MOF-199, the graphene modified activated carbon and the linoleic acid modified nano silicon-based oxide are not added into the second cellulose acetate fiber filter rod 4.

TABLE 1

The cigarettes obtained in example 1 and the blank control example were subjected to sensory evaluation by 8 professionals, according to tobacco industry standard YC/T138-1998 sensory evaluation methods for tobacco and tobacco products, and the results are shown in Table 2 below.

TABLE 2 sensory quality evaluation results

Example 2

The embodiment provides a middle cigarette with the length of 94mm and the circumference of 21.80mm, which comprises a composite filter stick and a cigarette body which are connected with each other; the composite filter stick is composed of a first acetate fiber filter stick and a second acetate fiber filter stick added with MOF-199, graphene modified activated carbon and linoleic acid modified nano silicon-based oxide; one end of the second acetate fiber filter stick is connected with the first acetate fiber filter stick, and the other end of the second acetate fiber filter stick is connected with the cigarette body.

In the embodiment, the length of the composite filter stick is 30mm, wherein the length of the first acetate fiber filter stick is 10mm, and the length of the second acetate fiber filter stick is 20 mm; the length of the cigarette body is 64 mm.

In this embodiment, in the second cellulose acetate filter rod, the addition amount of the MOF-199 is 26 mg/count, the addition amount of the graphene modified activated carbon is 13 mg/count, and the addition amount of the linoleic acid modified nano silicon-based oxide is 5 mg/count.

In the manufacturing of the second acetate fiber filter rod of the embodiment, after acetate fiber tows are sufficiently loosened, the linoleic acid modified nano silicon-based oxide and the plasticizer triacetyl glycerine are mixed according to the mass ratio of 1:10 and then added into the acetate fiber tows, so that the processing hardness and the performance of the filter rod are improved, and then the mixed MOF-199 and graphene modified activated carbon are added through the solid particle feeding device and are rolled and molded.

The analysis results of propionaldehyde in the cigarette smoke of this example are shown in table 3 below. The blank control differs from the present embodiment only in that: the MOF-199, the graphene modified activated carbon and the linoleic acid modified nano silicon-based oxide are not added into the second cellulose acetate filter rod.

TABLE 3

The cigarettes obtained in example 2 and the blank control were subjected to sensory evaluation by 8 professionals, according to tobacco industry standard YC/T138-1998 sensory evaluation methods for tobacco and tobacco products, and the results are shown in Table 4 below.

TABLE 4 sensory quality evaluation results

Comparative example 1

Compared with example 1, the difference is only that: replacing graphene modified activated carbon with unmodified activated carbon, wherein the pore size distribution of the activated carbon is as follows: 90 percent of pores with the pore diameter of 0.8-2 nm, 10 percent of pores with the pore diameter of 2-100 nm, 40-60 meshes of particle size, 0.8mL/g of pore volume and 931m of specific surface area²/g。

The analysis results of propionaldehyde in the cigarette smoke of this comparative example are shown in Table 5 below. The blank differs from this comparative example only in that: the MOF-199, the graphene modified activated carbon and the linoleic acid modified nano silicon-based oxide are not added into the second cellulose acetate filter rod.

TABLE 5

TABLE 6 sensory quality evaluation results

Although the invention has been described in detail hereinabove by way of general description, specific embodiments and experiments, it will be apparent to those skilled in the art that many modifications and improvements can be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.