Binary composite filter rod containing cuprous ion-based MOFs-gel composite 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 binary composite filter rod comprising cuprous ion-based MOFs-gel composite particles with CO-specific adsorption capacity, a particle filter rod made of a tobacco filament bundle adhered with cuprous ion-based MOFs gel composite particles by wrapping with forming paper, and then composited with a filter rod, wherein the particle filter rod is close to the end of the tobacco shreds, with a length of 5mm to 30mm, and the composite particles are cuprous ion-based MOFs composite particles with a surface wrapped with phase change gel, and the addition amount is 0.1 to 3mg / mm; the filter rod is close to the lip end, with a length of 5mm to 30mm. The binary composite filter rod disclosed in the present invention has a simple preparation process, and the composite filter rod prepared can efficiently adsorb CO in smoke, significantly reduce the content of CO in 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 composite particles, the smoke temperature can be significantly reduced, and the effect on the taste sensory perception is not great, and it has a significant 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 binary composite filter rod comprising cuprous ion-based MOFs-gel composite 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 deficiencies in the above-mentioned prior art, the object of the present invention is to disclose a binary composite filter rod comprising cuprous ion-based MOFs gel composite particles having CO specific adsorption capacity.

[0006] A binary composite filter rod comprising cuprous ion-based MOFs gel composite particles with CO specific adsorption capacity, wherein a particle filter rod is made by wrapping a tobacco filament bundle adhered with cuprous ion-based MOFs gel composite particles with forming paper, and then composited with a filter rod 1, wherein the particle filter rod is close to the tobacco shred end and has a length of 5mm to 30mm, the composite particles are cuprous ion-based MOFs composite particles with a phase change gel wrapped on the surface, and the addition amount thereof is 0.1 to 3mg / mm; the filter rod 1 is close to the lip end and has a length of 5mm to 30mm.

[0007] In a preferred disclosed example of the present invention, the cuprous ion-based MOFs composite particles with the phase change gel coated on the surface are prepared by uniformly spraying the heated and melted phase change gel on the surface of the cuprous ion-based MOFs particles.

[0008] In a preferred disclosed example of the present invention, the particle size of the composite particles is 30 to 120 meshes.

[0009] In a preferred disclosed example of the present invention, the filter rod 1 is a non-hollow tube type non-granular type filter rod, such as a cellulose acetate filter rod, a polypropylene tow filter rod, a capsule filter rod, a core wire filter rod, a groove filter rod, etc.

[0010] In a preferred disclosed example of the present invention, the diameter of the binary composite filter rod is between 4.5 and 9.5 mm.

[0011] In a preferred disclosed example of the present invention, the tobacco filament bundle is cellulose acetate or polypropylene filament bundle.

[0012] 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.

[0013] 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.

[0014] 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.

[0015] 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.

[0016] Furthermore, the phase change gel has a mass ratio of PEG-4000:PEG-6000 of 8:2.

[0017] 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.

[0018] Furthermore, the curing agent is glyceryl monostearate.

[0019] 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.

[0020] 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.

[0021] Furthermore, the lubricant is hydrogenated vegetable oil and beeswax, and the mass ratio of hydrogenated vegetable oil to beeswax is 2:8.

[0022] 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.

[0023] The present invention defines the CO adsorption rate as:

[0024]

[0025] Beneficial Effects

[0026] The binary 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 prepared composite filter stick 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, with little effect on the sensory organ of inhalation, and has a significant harm reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A binary composite filter rod comprising cuprous ion-based MOFs gel particles having a specific CO adsorption capacity;

[0028] Figure 2 .Comprising a binary composite filter rod of cuprous ion-based MOFs gel particle capsules with CO specific adsorption capacity;

[0029] Figure 3 .Comprising a cuprous ion-based MOFs gel particle-acetate binary composite filter rod having a specific CO adsorption capacity;

[0030] Figure 4 .Comprising a cuprous ion-based MOFs gel particle core wire binary composite filter rod having CO specific adsorption capacity;

[0031] Figure 5 .Comprising a groove binary composite filter rod of cuprous ion-based MOFs gel particles with CO specific adsorption capacity;

[0032] Figure 6 .Comprising a cuprous ion-based MOFs gel particle-propylene fiber binary composite filter rod having a CO specific adsorption capacity;

[0033] Among them, the various components are: 1. molding paper; 2. particle filter rod; 3. filter rod 1; 4. capsule filter rod; 5. acetate filter rod; 6. core wire filter rod; 7. groove filter rod; 8. polypropylene fiber filter rod. 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 binary composite filter rod comprising cuprous ion-based MOFs gel composite particles with CO specific adsorption capacity, wherein a cigarette filament bundle adhered with cuprous ion-based MOFs gel composite particles with CO specific adsorption capacity is wrapped with a forming paper 1 to form a particle filter rod 2, which is then composited with a capsule filter rod 4 ( Figure 2 ), wherein the particle filter rod 2 is close to the tobacco end and has a length of 10 mm, the composite particles are cuprous ion-based MOFs particles with a surface coated with phase change gel, and the addition amount is 1.5 mg / mm, the capsule filter rod 4 is close to the lip end and has a length of 25 mm, and the filter rod diameter is 5.85 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 acetate filter rod with the same structure as that of the present embodiment was prepared as control sample 1.

[0039] Example 2

[0040] A binary composite filter rod comprising cuprous ion-based MOFs gel composite particles with CO specific adsorption capacity, wherein a cigarette filament bundle adhered with cuprous ion-based MOFs gel particles with CO specific adsorption capacity is wrapped with a forming paper 1 to form a particle filter rod 2, which is then composited with a cellulose acetate filter rod 5 ( Figure 3 ), wherein the particle filter rod 2 is close to the tobacco end and has a length of 15 mm, the composite particles are cuprous ion-based MOFs composite particles with a surface coated with phase change gel, and the addition amount is 2.0 mg / mm, the acetate filter rod 5 is close to the lip end and has a length of 15 mm, which is a capsule filter rod with a filter rod diameter of 6.85 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 acetate filter rod with the same structure as that of this embodiment was prepared as control sample 2.

[0043] Example 3

[0044] A binary composite filter rod comprising cuprous ion-based MOFs gel composite particles with CO specific adsorption capacity, wherein a cigarette filament bundle with cuprous ion-based MOFs gel particles with CO specific adsorption capacity is wrapped with a forming paper 1 to form a particle filter rod 2, which is then composited with a core wire filter rod 6 ( Figure 4 ), the composite particles are cuprous ion-based MOFs composite particles with a phase change gel coated on the surface, and the addition amount is 2.5 mg / mm, wherein the particle filter rod 2 is close to the tobacco end and has a length of 7 mm, the core wire filter rod 6 is close to the lip end and has a length of 18 mm, and the filter rod diameter is 4.95 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 acetate filter rod with the same structure as that of the present embodiment was prepared as control sample 3.

[0047] Example 4

[0048] A binary composite filter rod comprising cuprous ion-based MOFs gel composite particles with CO specific adsorption capacity, wherein a cigarette filament bundle with cuprous ion-based MOFs gel particles with CO specific adsorption capacity is wrapped with a forming paper 1 to form a particle filter rod 2, which is then composited with a groove filter rod 7 ( Figure 5 ), wherein the particle filter rod 2 is close to the tobacco end, with a length of 7 mm, the composite particles are cuprous ion-based MOFs composite particles with a surface coated with phase change gel, and the addition amount is 2.1 mg / mm, the groove filter rod 7 is close to the lip end, with a length of 23 mm, and a filter rod diameter of 5.75 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 acetate filter rod with the same structure as that of the present embodiment was prepared as control sample 4.

[0051] Example 5

[0052] A binary composite filter rod comprising cuprous ion-based MOFs gel composite particles with CO specific adsorption capacity, wherein a cigarette filament bundle with cuprous ion-based MOFs gel particles with CO specific adsorption capacity is wrapped with a forming paper 1 to form a particle filter rod 2, which is then composited with a polypropylene fiber filter rod 8 ( Figure 6), wherein the particle filter rod 2 is close to the tobacco end and has a length of 20 mm, the composite particles are cuprous ion-based MOFs composite particles with a surface coated with phase change gel, and the addition amount is 3.0 mg / mm, the polypropylene fiber filter rod 8 is close to the lip end and has a length of 10 mm, and the filter rod diameter is 7.30 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 acetate filter rod with the same structure as that of the present embodiment was prepared as control sample 5.

[0055] 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:

[0056] Table 1. CO adsorption rate

[0057]

[0058] 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 binary composite filter rod comprising cuprous ion-based MOFs gel composite particles having a specific CO adsorption capacity, wherein a particle filter rod (2) is made by wrapping a cigarette tow having cuprous ion-based MOFs gel composite particles adhered thereto with a forming paper (1), and then composited with a filter rod 1 (3), characterized in that: The particle filter rod (2) is close to the end of the tobacco shreds, and the composite particles are cuprous ion-based MOFs composite particles with a phase change gel coated on the surface, and the addition amount thereof is 0.1-3 mg / mm; the cuprous ion-based MOFs composite particles with a phase change gel coated on the surface are prepared by uniformly spraying the heated and melted phase change gel on the surface of the cuprous ion-based MOFs particles, wherein the cuprous ion-based MOFs particles and the phase change gel are mixed in a mass ratio of 30-60:60-100, and the cuprous ion-based MOFs is a mesh metal organic skeleton material, namely C u(I)-MOFs; the phase change gel is composed of a 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, tristearate glyceryl, and the lubricant includes one or more of hydrogenated vegetable oil, propylene glycol, beeswax, and palm wax; the filter rod 1 (3) is close to the lip end.

2. The binary composite filter rod comprising cuprous ion-based MOFs gel composite particles having CO specific adsorption capacity according to claim 1, characterized in that: The particle size of the composite particles is 30 to 120 meshes.

3. The binary composite filter rod comprising cuprous ion-based MOFs gel composite particles having CO specific adsorption capacity according to claim 1, characterized in that: The particle filter rod (2) has a length of 5 mm to 30 mm.

4. The binary composite filter rod comprising cuprous ion-based MOFs gel composite particles having CO specific adsorption capacity according to claim 1, characterized in that: The filter rod 1 (3) is a non-empty tube type and non-particle type filter rod.

5. The binary composite filter rod comprising cuprous ion-based MOFs gel composite particles having CO specific adsorption capacity according to claim 4, characterized in that: The filter rod 1 (3) is any one of a cellulose acetate filter rod, a polypropylene tow filter rod, a capsule filter rod, a core filter rod, and a groove filter rod.

6. The binary composite filter rod comprising cuprous ion-based MOFs gel composite particles having CO specific adsorption capacity according to claim 1, characterized in that: The filter rod 1 (3) has a length of 5 mm to 30 mm.

7. The binary composite filter rod comprising cuprous ion-based MOFs gel composite particles having CO specific adsorption capacity 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.

8. The binary composite filter rod comprising cuprous ion-based MOFs gel composite particles having CO specific adsorption capacity according to claim 1, 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.

9. The binary composite filter rod comprising cuprous ion-based MOFs gel composite particles having CO specific adsorption capacity according to claim 8, characterized in that: The phase change gel has a mass ratio of PEG-4000:PEG-6000 of 8:

2.

10. The binary composite filter rod comprising cuprous ion-based MOFs gel composite particles having CO specific adsorption capacity according to claim 1, characterized in that: The curing agent is glyceryl monostearate.

11. The binary composite filter rod comprising cuprous ion-based MOFs gel composite particles having CO specific adsorption capacity 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.

12. The binary composite filter rod comprising cuprous ion-based MOFs gel composite particles having CO specific adsorption capacity according to claim 11, characterized in that: The lubricant is hydrogenated vegetable oil and beeswax, and the mass ratio of hydrogenated vegetable oil to beeswax is 2:

8.

13. The binary composite filter rod comprising cuprous ion-based MOFs gel composite particles having CO specific adsorption capacity according to claim 1, characterized in that: The diameter of the binary composite filter rod is between 4.5 and 9.5 mm.

14. The binary composite filter rod comprising cuprous ion-based MOFs gel composite particles having CO specific adsorption capacity according to claim 1, characterized in that: The tobacco filament bundle is cellulose acetate or polypropylene filament bundle.

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