Ternary cavity composite filter rod containing cuprous ion-based MOFs-gel particles

Abstract

The present invention belongs to the technical field of cigarette auxiliary materials, and relates to a composite filter rod, and in particular to a ternary cavity composite filter rod comprising cuprous ion-based MOFs-gel particles with CO-specific adsorption capacity, wherein the gel particles are placed in the cavity between the filter rod 1 and the filter rod 2, and are compounded after being wrapped with molding paper, wherein the filter rod 1 is close to the tobacco end, with a length of 5 to 30 mm, and the filter rod 2 is close to the lip end, with a length of 5 to 30 mm, and the gel particles are obtained by uniformly spraying the heated phase change gel on the surface of the cuprous ion-based MOFs particles of 10 to 40 meshes and cooling them, and the filling amount is 20 to 160 mg / cavity, and the cavity length is 3 to 10 mm. The composite filter rod disclosed in the present invention has a simple preparation process, can efficiently adsorb CO in smoke, and significantly reduce the content of CO in the smoke entering the oral cavity, and the adsorption rate can reach more than 15%. Due to the thermal sensitivity of the phase change gel in the cuprous ion-based MOFs-gel particles, the smoke temperature can be significantly reduced, but the effect on the taste sensory organ is not great, and it has an obvious harm reduction effect.

Description

Technical Field

[0001] The invention belongs to the technical field of cigarette auxiliary materials, and relates to a composite filter rod, in particular to a ternary cavity composite filter rod containing cuprous ion-based MOFs-gel particles. Background Art

[0002] After a traditional cigarette is lit, the tobacco continues to release smoke due to incomplete combustion; heated tobacco products use high temperature to roast the tobacco bomb to release smoke. These are the main ways to produce CO in the smoke. Excessive inhalation of CO is harmful to the human body.

[0003] Common ways of adsorbing CO in the cigarette industry include physical interception of filters and adsorption of functional particles. Physical interception is when smoke passes through the filter, CO flows inside the filter, and constantly collides with the filter tow during its movement, thus being intercepted; functional particle adsorption, the particles used are mostly porous particles, which have the characteristics of many internal channels, large specific surface area, and strong adsorption capacity. When CO flows in the internal channels, due to the long movement path, the kinetic energy is consumed and retained inside the functional particles, thus being adsorbed and not inhaled into the mouth.

[0004] Both of the above methods have disadvantages: the physical interception method has low interception efficiency because CO is a small molecule, and the gaps between the tow fibers in the filter are large, so CO can pass through the gaps and cannot be intercepted; the functional particles are not selective in their adsorption. While adsorbing CO, they also adsorb most of the smoke substances, which reduces the smoke quality and affects the smoking taste. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to disclose a ternary cavity composite filter rod comprising cuprous ion-based MOFs gel particles with CO specific adsorption capacity.

[0006] Technical Solution

[0007] A ternary cavity composite filter rod comprising cuprous ion-based MOFs gel particles with CO specific adsorption capacity, wherein the gel particles are placed in a cavity between a filter rod 1 and a filter rod 2, and are composited after being wrapped with molding paper, wherein the filter rod 1 is close to the tobacco end and has a length of 5 to 30 mm, and the filter rod 2 is close to the lip end and has a length of 5 to 30 mm. The gel particles are obtained by uniformly spraying heated phase change gel on the surface of cuprous ion-based MOFs particles of 10 to 40 meshes and cooling them, wherein the filling amount is 20 to 160 mg / cavity, and the cavity length is 3 to 10 mm.

[0008] In a preferred disclosed example of the present invention, the filter rod 1 is a non-empty tube filter rod, such as an activated carbon filter rod, a cellulose acetate filter rod, a tea particle filter rod, a capsule filter rod, a groove filter rod, a propylene fiber filter rod, and the like.

[0009] In a preferred disclosed example of the present invention, the filter rod 2 is a non-granular and non-hollow tube filter rod, such as a core wire filter rod, an acetate filter rod, a capsule filter rod, a polypropylene filter rod, and the like.

[0010] In a preferred disclosed example of the present invention, the diameter of the ternary cavity composite filter rod is 4.5 to 9.5 mm.

[0011] The cuprous ion-based MOFs-gel material with CO specific adsorption disclosed in the present invention is prepared by mixing a cuprous ion-based MOFs material and a phase change gel in a mass ratio of 30-60:60-100, wherein the cuprous ion-based MOFs is a network metal organic framework material, i.e., Cu(I)-MOFs; the phase change gel is composed of a phase change gel, a curing agent and a lubricant, and the mass ratio of the phase change gel: the curing agent: the lubricant is 70-90:15-30:10-15.

[0012] In a preferred disclosed example of the present invention, the phase change gel is composed of phase change gel: curing agent: lubricant in a mass ratio of 90:15:10.

[0013] In the preferred disclosed examples of the present invention, the phase change gel includes but is not limited to one or more of polyethylene glycol (PEG), gelatin, paraffin-graphite composite, and stearic acid-bentonite nano-mixture.

[0014] In a preferred disclosed example of the present invention, the phase change gel is polyethylene glycol (PEG) with a molecular weight of 4000 and 6000, and the mass ratio of PEG-4000:PEG-6000 is 6-9:1-4.

[0015] Furthermore, the phase change gel has a mass ratio of PEG-4000:PEG-6000 of 8:2.

[0016] In the preferred disclosed examples of the present invention, the curing agent includes but is not limited to one or more of glyceryl monostearate and glyceryl tristearate.

[0017] Furthermore, the curing agent is glyceryl monostearate.

[0018] In a preferred disclosed example of the present invention, the lubricant includes but is not limited to one or more of hydrogenated vegetable oil, propylene glycol, beeswax, and palm wax.

[0019] In a preferred disclosed example of the present invention, the lubricant is hydrogenated vegetable oil and beeswax, and the mass ratio of hydrogenated vegetable oil: beeswax is 1-3:7-9.

[0020] Furthermore, the lubricant is hydrogenated vegetable oil and beeswax, and the mass ratio of hydrogenated vegetable oil to beeswax is 2:8.

[0021] The composite material disclosed in the present invention has a softening temperature between 45 and 55°C. When the temperature exceeds 55°C, the composite material begins to melt. When the temperature exceeds 65°C, the composite material completely melts, and the cuprous ions (Cu + )-based MOFs materials are completely exposed to flue gas.

[0022] The present invention defines the CO adsorption rate as:

[0023]

[0024] Beneficial Effects

[0025] The composite filter stick disclosed in the present invention has a simple preparation process and does not require modification of the existing filter stick forming equipment. The composite filter stick prepared can efficiently adsorb CO in smoke and significantly reduce the content of CO in smoke entering the oral cavity, with an adsorption rate of more than 15%. Due to the thermal sensitivity of the phase change gel in the cuprous ion-based MOFs-gel composite particles, the smoke temperature can be significantly reduced, but the effect on the taste sensory perception is not significant, and it has a significant harm reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 . A ternary cavity composite filter rod comprising cuprous ion-based MOFs gel particles having CO specific adsorption capacity;

[0027] Figure 2 . An activated carbon core wire ternary cavity composite particle filter rod containing cuprous ion-based MOFs gel particles with CO specific adsorption capacity;

[0028] Figure 3 . A cellulose acetate ternary cavity composite particle filter rod containing cuprous ion-based MOFs gel particles with CO specific adsorption capacity;

[0029] Figure 4 . A tea particle capsule ternary cavity composite particle filter rod comprising cuprous ion-based MOFs gel particles having CO specific adsorption capacity;

[0030] Figure 5 .Capsule acetate ternary cavity composite particle filter rod containing cuprous ion-based MOFs gel particles with CO specific adsorption capacity;

[0031] Figure 6 . A grooved cellulose acetate ternary cavity composite particle filter rod containing cuprous ion-based MOFs gel particles with CO specific adsorption capacity;

[0032] Figure 7 .Capsule ternary cavity composite particle filter rod containing cuprous ion-based MOFs gel particles with CO specific adsorption capacity;

[0033] Among them, the various components are: 1. molding paper; 2. filter rod 1; 3. filter rod 2; 4. cavity; 5. activated carbon filter rod; 6. core wire filter rod; 7. acetate filter rod 1; 8. acetate filter rod 2; 9. tea particle filter rod; 10. capsule filter rod 1; 11. capsule filter rod 2; 12. acetate filter rod 3; 13. groove filter rod, 14. acetate filter rod 4; 15. capsule filter rod 3; 16. capsule filter rod 4. DETAILED DESCRIPTION

[0034] The present invention is described in detail below in conjunction with the embodiments so that those skilled in the art can better understand the present invention, but the present invention is not limited to the following embodiments.

[0035] Example 1

[0036] A ternary cavity composite filter rod comprising cuprous ion-based MOFs gel particles with CO specific adsorption capacity, wherein the gel particles are placed in a cavity 4 between an activated carbon filter rod 5 and a core wire filter rod 6, and are wrapped with a molding paper 1 and then composited ( Figure 2 ), wherein the activated carbon filter rod 5 is close to the tobacco end and has a length of 10 mm, the core filter rod 6 is close to the lip end and has a length of 10 mm, and the gel particles are obtained by uniformly spraying the heated phase change gel on the surface of 10-40 mesh cuprous ion-based MOFs material particles and cooling them, the filling amount is 80 mg / cavity, the cavity length is 5 mm, and the filter rod diameter is 6.35 mm.

[0037] When the flue gas passes through, the phase change gel melts and the cuprous ion-based MOFs material is exposed to the flue gas, using the heat carried by the flue gas to complete the adsorption of CO.

[0038] By the same steps, a common three-component hollow composite filter rod with the same structure and circumference as those in the present embodiment was prepared as control sample 1, wherein the hollow filler was inert particles.

[0039] Example 2

[0040] A ternary cavity composite filter rod comprising cuprous ion-based MOFs gel particles having a specific CO adsorption capacity, wherein the gel particles are placed in a cavity 4 between a cellulose acetate filter rod 7 and a cellulose acetate filter rod 8, and are composited after being wrapped with a molding paper 1 ( Figure 3 ), wherein the acetate filter rod 7 is close to the tobacco end and has a length of 15 mm, the acetate filter rod 8 is close to the lip end and has a length of 10 mm, and the gel particles are obtained by uniformly spraying the heated phase change gel on the surface of 10-40 mesh cuprous ion-based MOFs material particles and cooling them, the filling amount is 100 mg / cavity, the cavity length is 5 mm, and the filter rod diameter is 7.0 mm.

[0041] When the flue gas passes through, the phase change gel melts and the cuprous ion-based MOFs material is exposed to the flue gas, using the heat carried by the flue gas to complete the adsorption of CO.

[0042] By the same steps, a common three-component hollow composite filter rod with the same structure and circumference as those in the present embodiment was prepared as control sample 2, wherein the hollow filler was inert particles.

[0043] Example 3

[0044] A ternary cavity composite filter rod comprising cuprous ion-based MOFs gel particles with CO specific adsorption capacity, wherein the gel particles are placed in a cavity 4 between a tea particle filter rod 9 and a capsule filter rod 10, and are wrapped with a molding paper 1 and then composited ( Figure 4 ), wherein the tea particle filter rod 9 is close to the tobacco end and has a length of 10 mm, the capsule filter rod 10 is close to the lip end and has a length of 10 mm, and the gel particles are obtained by uniformly spraying the heated phase change gel on the surface of 10-40 mesh cuprous ion-based MOFs particles and cooling them, with a filling amount of 120 mg / cavity and a length of 10 mm; the filter rod has a diameter of 5.35 mm.

[0045] When the flue gas passes through, the phase change gel melts and the cuprous ion-based MOFs material is exposed to the flue gas, using the heat carried by the flue gas to complete the adsorption of CO.

[0046] By the same steps, a common three-component hollow composite filter rod with the same structure and circumference as those in the present embodiment was prepared as control sample 3, wherein the hollow filler was inert particles.

[0047] Example 4

[0048] A ternary cavity composite filter rod comprising cuprous ion-based MOFs gel particles with CO specific adsorption capacity, wherein the gel particles are placed in a cavity 4 between a capsule filter rod 11 and a cellulose acetate filter rod 12, and are wrapped with a molding paper 1 and then composited ( Figure 5 ), wherein the capsule filter rod 11 is close to the tobacco end and has a length of 22 mm, the acetate filter rod 12 is close to the lip end and has a length of 10 mm, and the composite particles are obtained by uniformly spraying the heated phase change gel on the surface of 10-40 mesh cuprous ion-based MOFs particles and then cooling them, with a filling amount of 160 mg / cavity and a length of 8 mm; the filter rod diameter is 7.85 mm.

[0049] When the flue gas passes through, the phase change gel melts and the cuprous ion-based MOFs material is exposed to the flue gas, using the heat carried by the flue gas to complete the adsorption of CO.

[0050] By the same steps, a common three-component cavity composite filter rod with the same structure and circumference as that of the present embodiment was prepared as control sample 4, wherein the cavity filler was inert particles.

[0051] Example 5

[0052] A ternary cavity composite filter rod comprising cuprous ion-based MOFs gel particles with CO specific adsorption capacity, wherein the gel particles are placed in a cavity 4 between a groove filter rod 13 and a cellulose acetate filter rod 14, and are wrapped with a molding paper 1 and then composited ( Figure 6 ), wherein the groove filter rod 13 is close to the tobacco end and has a length of 17 mm, the acetate filter rod 14 is close to the lip end and has a length of 10 mm, and the gel particles are obtained by uniformly spraying the heated phase change gel on the surface of 10-40 mesh cuprous ion-based MOFs particles and cooling them, with a filling amount of 70 mg / cavity and a length of 8 mm; the filter rod diameter is 5.85 mm.

[0053] When the flue gas passes through, the phase change gel melts and the cuprous ion-based MOFs material is exposed to the flue gas, using the heat carried by the flue gas to complete the adsorption of CO.

[0054] By the same steps, a common three-component hollow composite filter rod with the same structure and circumference as those in the present embodiment was prepared as control sample 5, wherein the hollow filler was inert particles.

[0055] Example 6

[0056] A ternary cavity composite filter rod comprising cuprous ion-based MOFs gel particles having CO specific adsorption capacity, wherein the gel particles are placed in a cavity 4 between a capsule filter rod 15 and a capsule filter rod 16, and are composited after being wrapped with a molding paper 1 ( Figure 7 ), wherein the capsule filter rod 15 is close to the tobacco end and has a length of 12 mm, the capsule filter rod 16 is close to the lip end and has a length of 12 mm, the gel particles are obtained by uniformly spraying the heated phase change gel on the surface of 10-40 mesh cuprous ion-based MOFs material particles and cooling them, the filling amount is 55 mg / cavity, and the length is 6 mm; the filter rod diameter is 5.35 mm.

[0057] When the flue gas passes through, the phase change gel melts and the cuprous ion-based MOFs material is exposed to the flue gas, using the heat carried by the flue gas to complete the adsorption of CO.

[0058] By the same steps, a common three-component cavity composite filter rod with the same structure and circumference as that of the present embodiment was prepared as a control sample 6, wherein the cavity filler was inert particles.

[0059] The prepared samples and control samples were placed in an automatic smoking machine, the number of puffs and the smoke inhalation volume were set the same, and the CO content in the smoke was measured. The test results are as follows:

[0060] Table 1. CO adsorption rate

[0061]

[0062] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the specification of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A ternary cavity composite filter rod containing cuprous ion-based MOFs gel particles, wherein the gel particles are placed in a cavity (4) between a filter rod 1 (2) and a filter rod 2 (3), and are composited after being wrapped with a molding paper (1), characterized in that: The filter rod 1 (2) is close to the tobacco end, and the filter rod 2 (3) is close to the lip end. The gel particles are obtained by uniformly spraying the heated phase change gel on the surface of the cuprous ion-based MOFs particles of 10 to 40 meshes and cooling them. The filling amount is 20 to 160 mg / cavity, wherein the cuprous ion-based MOFs and the phase change gel are mixed in a mass ratio of 30 to 60:60 to 100, and the cuprous ion-based MOFs are a mesh metal organic framework material, namely Cu(I)-MOFs; The phase change gel is composed of phase change gel, a curing agent and a lubricant, and the mass ratio of phase change gel: curing agent: lubricant is 70-90:15-30:10-15. The phase change gel includes one or more of polyethylene glycol PEG, gelatin, paraffin-graphite composite, stearic acid-bentonite nanomixture; the curing agent includes one or more of monostearate glyceryl and tristearate glyceryl; the lubricant includes one or more of hydrogenated vegetable oil, propylene glycol, beeswax, and palm wax.

2. The ternary cavity composite filter rod comprising cuprous ion-based MOFs gel particles according to claim 1, characterized in that: The filter rod 1 (2) is a non-empty tube filter rod.

3. The ternary cavity composite filter rod comprising cuprous ion-based MOFs gel particles according to claim 2, characterized in that: The filter rod 1 (2) is an activated carbon filter rod, a cellulose acetate filter rod, a tea particle filter rod, a capsule filter rod, a groove filter rod or a propylene fiber filter rod.

4. The ternary cavity composite filter rod comprising cuprous ion-based MOFs gel particles according to claim 2, characterized in that: The filter rod 1 (2) has a length of 5 to 30 mm.

5. The ternary cavity composite filter rod comprising cuprous ion-based MOFs gel particles according to claim 1, characterized in that: The filter rod 2 (3) is a non-granular and non-empty tube filter rod.

6. The ternary cavity composite filter rod comprising cuprous ion-based MOFs gel particles according to claim 5, characterized in that: The filter rod 2 (3) is a core wire filter rod, a cellulose acetate filter rod, a capsule filter rod or a polypropylene filter rod.

7. The ternary cavity composite filter rod comprising cuprous ion-based MOFs gel particles according to claim 5, characterized in that: The filter rod 2 (3) has a length of 5 to 30 mm.

8. The ternary cavity composite filter rod comprising cuprous ion-based MOFs gel particles according to claim 1, characterized in that: The cavity (4) has a length of 3 to 10 mm.

9. The ternary cavity composite filter rod comprising cuprous ion-based MOFs gel particles according to claim 1, characterized in that: The phase change gel is composed of phase change gel: curing agent: lubricant in a mass ratio of 90:15:

10.

10. The ternary cavity composite filter rod comprising cuprous ion-based MOFs gel particles according to claim 9, characterized in that: The phase-change gel is polyethylene glycol PEG with a molecular weight of 4000 and 6000, and the mass ratio of PEG-4000:PEG-6000 is 6-9:1-4.

11. The ternary cavity composite filter rod comprising cuprous ion-based MOFs gel particles according to claim 10, characterized in that: The phase change gel has a mass ratio of PEG-4000:PEG-6000 of 8:

2.

12. The ternary cavity composite filter rod comprising cuprous ion-based MOFs gel particles according to claim 1, characterized in that: The curing agent is glyceryl monostearate.

13. The ternary cavity composite filter rod comprising cuprous ion-based MOFs gel particles according to claim 1, characterized in that: The lubricant is hydrogenated vegetable oil and beeswax, and the mass ratio of hydrogenated vegetable oil to beeswax is 1-3:7-9.

14. The ternary cavity composite filter rod comprising cuprous ion-based MOFs gel particles according to claim 13, characterized in that: The lubricant is hydrogenated vegetable oil and beeswax, and the mass ratio of hydrogenated vegetable oil to beeswax is 2:

8.

15. The ternary cavity composite filter rod comprising cuprous ion-based MOFs gel particles according to any one of claims 1 to 14, characterized in that: The diameter of the ternary cavity composite filter rod is 4.5-9.5 mm.

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