Antibacterial material for electronic atomizer as well as preparation method and application of antibacterial material

Abstract

The invention relates to a bacteriostatic material for an electronic atomizer as well as a preparation method and application of the bacteriostatic material. The bacteriostatic material is prepared from the following raw materials in parts by weight: 80 to 99.9 parts of thermoplastic polymer and 0.1 to 20 parts of inorganic carrier loaded with plant essential oil. According to the antibacterial material for the electronic atomizer, the plant essential oil is loaded through the inorganic carrier, the plant essential oil is coated with the inorganic carrier, the slow release effect of the plant essential oil can be achieved, the release time of the plant essential oil can be prolonged, and meanwhile the strong aromatic smell of natural plants can be given to the antibacterial material. The inorganic carrier is coated outside the plant essential oil, so that the plant essential oil can be prevented from being damaged during injection molding, and the antibacterial material has an excellent long-acting antibacterial effect.

Description

Technical Field

[0001] The present invention relates to the field of electronic atomization, and particularly relates to an antibacterial material for an electronic atomizer, a preparation method thereof, and an application thereof. Background Art

[0002] Compared with traditional cigarettes, the number of puffs of an e-cigarette is about 200 - 10,000 puffs, and it is very difficult to use it up completely within a day. Especially for large-capacity e-cigarettes, it takes more than a week on average to be completely used up. The long-term exposed placement of e-cigarettes and frequent contact with the mouth make it extremely easy for harmful bacteria such as bacteria and germs to infect near the filter tip or in the oil storage chamber, causing the derivation of human pathogenic bacteria such as Escherichia coli, thus bringing potential safety hazards to the physical health of users. As a substance extracted from plants, plant essential oils have antioxidant and broad-spectrum antibacterial properties, but there are problems of easy volatilization and release when using plant essential oils, which cannot meet the requirements of long-term exposed use.

[0003] At present, the filter tip or oil storage chamber of e-cigarettes is prepared by injection molding. The injection temperature of materials such as PCTG is 260 - 280 °C, and β-cyclodextrin will undergo thermal cracking at this injection temperature. If traditional materials such as β-cyclodextrin are used to embed plant essential oils, because they are not heat-resistant, they are extremely easy to be damaged during injection molding, and then the antibacterial substances such as plant essential oils embedded inside are also damaged, making the material lose its antibacterial effect. Therefore, in the prior art, in order to obtain an antibacterial material that can be applied to an electronic atomizer, nano-silver particles are usually added to the injection molding material, but nano-silver particles are extremely easy to fall off during use, there is a risk of entering the human body, bringing great potential safety hazards to the physical health of users. Summary of the Invention

[0004] In order to overcome the problems existing in the above prior art, one of the purposes of the present invention is to provide an antibacterial material for an electronic atomizer.

[0005] Another purpose of the present invention is to provide a preparation method of an antibacterial material for an electronic atomizer.

[0006] Another purpose of the present invention is to provide a fitting for an electronic atomizer.

[0007] Another purpose of the present invention is to provide an electronic atomizer.

[0008] Another purpose of the present invention is to provide an application of an antibacterial material for an electronic atomizer in the field of electronic atomization.

[0009] In order to achieve the above purposes, the technical solutions adopted by the present invention are as follows:

[0010] The first aspect of the present invention provides an antibacterial material for an electronic atomizer, and the antibacterial material comprises the following raw materials for preparation in parts by weight: 80 to 99.9 parts of a thermoplastic polymer, and 0.1 to 20 parts of an inorganic carrier loaded with a plant essential oil.

[0011] Preferably, the melting temperature of the inorganic carrier is higher than that of the thermoplastic polymer.

[0012] Preferably, the melting temperature of the thermoplastic polymer is 180°C to 280°C.

[0013] In the present invention, the inorganic carrier has a melting temperature higher than that of the thermoplastic polymer. During injection molding, the thermoplastic polymer melts while the inorganic carrier does not melt, and the structure of the inorganic carrier is not damaged. Due to the coating effect of the inorganic carrier, the plant essential oil can avoid thermal damage, so that the antibacterial material has excellent antibacterial effects and a strong plant aroma.

[0014] Preferably, the antibacterial material comprises the following raw materials for preparation in parts by weight: 90 to 99.4 parts of a thermoplastic polymer, 0.1 to 5 parts of an inorganic carrier loaded with a plant essential oil, and 0.5 to 9 parts of an inorganic carrier.

[0015] Preferably, the thermoplastic polymer is selected from at least one of polyethylene terephthalate-1,4-cyclohexanedimethanol ester, polyethylene, polypropylene, polyvinyl chloride, ethylene vinyl acetate copolymer, polystyrene, polyamide, polyterephthalate, polyethylene terephthalate, polycarbonate, polyurethane, polyphenylene ether, polyphenylene sulfide, polysulfone, and polyvinyl alcohol.

[0016] Preferably, in the inorganic carrier loaded with a plant essential oil, the mass ratio of the inorganic carrier to the plant essential oil is 1:(1.5 to 4).

[0017] Preferably, the plant essential oil is selected from at least one of rose essential oil, verbena essential oil, sweet orange essential oil, lemon essential oil, mint essential oil, grapefruit essential oil, jasmine essential oil, litsea cubeba essential oil, tea tree essential oil, thyme essential oil, and lavender essential oil. The plant essential oil in the present invention has a wide source, has a broad-spectrum antibacterial effect, and has the aroma of natural plants, which can endow the antibacterial material with persistent antibacterial properties and a strong natural plant aroma, and improve the use experience of the electronic atomizer prepared from the antibacterial material.

[0018] Preferably, the inorganic carrier is a mesoporous inorganic material, a microporous inorganic material or a combination thereof; further preferably, the particle size of the inorganic carrier is 7nm to 500μm, and the inorganic carrier is selected from at least one of mesoporous silica, mesoporous silicon particles, graphene, and carbon nanotubes. The inorganic carrier in the present invention is resistant to high temperatures and has a low cost, which can reduce the preparation cost of the antibacterial material. In addition, the inorganic carrier has good compatibility with thermoplastic polymers, and an antibacterial material with excellent mechanical strength can be prepared.

[0019] The second aspect of the present invention provides a method for preparing the antibacterial material for an electronic atomizer provided in the first aspect of the present invention, comprising the following steps:

[0020] S1: mixing an inorganic carrier with plant essential oil to obtain an inorganic carrier loaded with plant essential oil;

[0021] S2: Mix the inorganic carrier loaded with plant essential oil and the raw materials of thermoplastic polymer and then perform injection molding to obtain the antibacterial material for electronic atomizer.

[0022] Preferably, the mixing time in step S1 is 4 to 20 hours.

[0023] Preferably, the injection molding temperature in step S2 is 180°C to 280°C.

[0024] Preferably, the step S2 specifically comprises: mixing the inorganic carrier loaded with the plant essential oil with a thermoplastic polymer and then performing injection molding at 180-280° C. to obtain the antibacterial material for the electronic atomizer.

[0025] Preferably, the step S2 specifically comprises: mixing the inorganic carrier loaded with plant essential oil, the thermoplastic polymer and the inorganic carrier, and then performing injection molding at 180-280° C. to obtain the antibacterial material for the electronic atomizer.

[0026] The third aspect of the present invention provides an accessory for an electronic atomizer, the accessory comprising the antibacterial material for an electronic atomizer provided in the first aspect of the present invention; the accessory comprises at least one of a filter tip and an oil storage tank.

[0027] When the accessory is a filter tip, the filter tip contains plant essential oil with antibacterial effect. On the one hand, the filter tip can have excellent antibacterial effect, preventing the filter tip from being infected with pathogenic bacteria during frequent contact with the mouth, thereby posing a hidden danger to the user's health; on the other hand, the plant essential oil can give the filter tip a rich natural plant aroma, enhancing the user's smoking experience.

[0028] When the accessory is an oil storage tank, the oil storage tank contains antibacterial plant essential oil, which can prevent the electronic atomization liquid placed in the oil storage tank from breeding pathogens, thereby improving the safety performance of the electronic atomizer containing the oil storage tank. At the same time, the oil storage tank slowly releases the plant essential oil, which can make the electronic atomization liquid contained therein have natural plant fragrance, thereby enhancing the user's smoking experience.

[0029] Preferably, the accessories are a filter and an oil storage tank, the filter and the oil storage tank are an integrated structure, and the filter and the oil storage tank adopt the antibacterial material for the electronic atomizer provided in the first aspect of the present invention.

[0030] A fourth aspect of the present invention provides an electronic atomizer, comprising the accessories for the electronic atomizer provided by the third aspect of the present invention.

[0031] The fifth aspect of the present invention provides the use of the antibacterial material for electronic atomizer provided by the first aspect of the present invention in the field of electronic atomization.

[0032] The beneficial effects of the present invention are as follows: the antibacterial material for the electronic atomizer of the present invention is loaded with plant essential oils through an inorganic carrier, and the plant essential oils are coated inside the inorganic carrier, which can achieve the sustained release effect of the plant essential oils, prolong the release time of the plant essential oils, and also give the antibacterial material a strong natural plant aroma. Since the inorganic carrier is coated on the outside of the plant essential oils, the plant essential oils can be prevented from being destroyed during injection molding, so that the antibacterial material has an excellent long-lasting antibacterial effect. In addition, the present invention uses natural plant essential oils as antibacterial substances, which is more environmentally friendly and safe, and can avoid the potential safety hazards of antibacterial materials such as nanosilver and chemical antibacterial agents to the body. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a test diagram of the antibacterial effect of the antibacterial materials in Examples 1 to 4 of the present invention.

[0034] Figure 2 This is a test chart of the limonene release of the filter tips in Example 11 of the present invention and Comparative Example 3. DETAILED DESCRIPTION

[0035] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples, but the implementation and protection of the present invention are not limited thereto. It should be noted that if there are processes that are not particularly described in detail below, they can be implemented or understood by those skilled in the art with reference to the prior art. The reagents or instruments used that do not indicate the manufacturer are all conventional products that can be purchased commercially.

[0036] Example 1

[0037] The antibacterial material for the electronic atomizer in this example is injection molded after mixing 0.1 g of hollow mesoporous silica microspheres loaded with sweet orange essential oil and 99.9 g of polyethylene terephthalate - 1,4 - cyclohexanedimethanol ester.

[0038] The antibacterial material for the electronic atomizer in this example is prepared by the following method, and the specific steps are as follows:

[0039] (1) Take 0.1 g of hollow mesoporous silica microspheres with a particle size of 7 nm, place them in 0.3 g of sweet orange essential oil and stir for 8 h, and perform rotary centrifugation at a centrifugal speed of 1000 revolutions / min to obtain hollow mesoporous silica microspheres loaded with sweet orange essential oil.

[0040] (2) Take 0.1 g of the above - mentioned hollow mesoporous silica microspheres loaded with sweet orange essential oil and mix it with 99.9 g of polyethylene terephthalate - 1,4 - cyclohexanedimethanol ester, and then perform hot injection molding at 200 °C to obtain the antibacterial material for the electronic atomizer in this example.

[0041] Example 2

[0042] The antibacterial material for the electronic atomizer in this example is injection molded after mixing 1 g of hollow mesoporous silica microspheres loaded with lemon essential oil and 99 g of polyethylene terephthalate - 1,4 - cyclohexanedimethanol ester.

[0043] The antibacterial material for the electronic atomizer in this example is prepared by the following method, and the specific steps are as follows:

[0044] (1) Take 1 g of hollow mesoporous silica microspheres with a particle size of 1 μm, place them in 3 g of lemon essential oil and stir for 8 h, and perform rotary centrifugation at a centrifugal speed of 1000 revolutions / min to obtain hollow mesoporous silica microspheres loaded with lemon essential oil.

[0045] (2) Take 1 g of the above - mentioned hollow mesoporous silica microspheres loaded with lemon essential oil and mix it with 99 g of polyethylene terephthalate - 1,4 - cyclohexanedimethanol ester, and then perform hot injection molding at 200 °C to obtain the antibacterial material for the electronic atomizer in this example.

[0046] Example 3

[0047] The antibacterial material for the electronic atomizer in this example is injection molded after mixing 5 g of mesoporous silica microspheres loaded with peppermint essential oil and 95 g of polyethylene terephthalate - 1,4 - cyclohexanedimethanol ester.

[0048] The antibacterial material for the electronic atomizer in this example is prepared by the following method, and the specific steps are as follows:

[0049] (1) Take 5 g of mesoporous silica microspheres with a particle size of 500 μm, place them in 12 g of peppermint essential oil and stir for 8 h, and perform rotary centrifugation at a centrifugal speed of 1000 revolutions / min to obtain mesoporous silica microspheres loaded with peppermint essential oil.

[0050] (2) Take 5 g of the above-mentioned mesoporous silica microspheres loaded with peppermint essential oil and mix them with 95 g of polyethylene terephthalate - 1,4 - cyclohexanedimethanol ester, and then perform hot injection molding at 200 °C to obtain the antibacterial material for electronic atomizers in this example.

[0051] Example 4

[0052] The antibacterial material for electronic atomizers in this example is injection - molded after mixing 20 g of mesoporous silica microspheres loaded with tea tree essential oil and 80 g of polyethylene terephthalate - 1,4 - cyclohexanedimethanol ester.

[0053] The antibacterial material for electronic atomizers in this example is prepared by the following method, and the specific steps are as follows:

[0054] (1) Take 20 g of mesoporous silica microspheres with a particle size of 800 nm, place them in 50 g of tea tree essential oil and stir for 8 h, and perform rotary centrifugation at a centrifugal speed of 1000 revolutions / min to obtain mesoporous silica microspheres loaded with tea tree essential oil.

[0055] (2) Take 20 g of the above - mentioned mesoporous silica microspheres loaded with tea tree essential oil and mix them with 80 g of polyethylene terephthalate - 1,4 - cyclohexanedimethanol ester, and then perform hot injection molding at 200 °C to obtain the antibacterial material for electronic atomizers in this example.

[0056] Example 5

[0057] The antibacterial material for electronic atomizers in this example is injection - molded after mixing 1 g of hollow mesoporous silica microspheres loaded with a mixed essential oil of jasmine and lemon, 9 g of mesoporous silica microspheres and 90 g of polyethylene terephthalate - 1,4 - cyclohexanedimethanol ester.

[0058] The antibacterial material for electronic atomizers in this example is prepared by the following method, and the specific steps are as follows:

[0059] (1) Take 1 g of hollow mesoporous silica microspheres with a particle size of 600 nm, place them in 3 g of a mixed essential oil of jasmine and lemon and stir for 8 h, and perform rotary centrifugation at a centrifugal speed of 1000 revolutions / min to obtain hollow mesoporous silica microspheres loaded with a mixed essential oil of jasmine and lemon.

[0060] (2) Take 1 g of the hollow mesoporous silica microspheres loaded with jasmine and lemon mixed essential oil, 9 g of mesoporous silica microspheres with a particle size of 200 nm, and 90 g of polyethylene terephthalate - 1,4 - cyclohexanedimethanol ester. After mixing, they are injection - molded at 200 °C to obtain the antibacterial material for the electronic atomizer in this example.

[0061] Example 6

[0062] The antibacterial material for the electronic atomizer in this example is injection - molded from a mixture of 0.5 g of hollow mesoporous silica microspheres loaded with sweet orange and lavender mixed essential oil, 0.5 g of mesoporous silica microspheres with a particle size of 500 nm, and 99 g of polyethylene terephthalate - 1,4 - cyclohexanedimethanol ester.

[0063] The antibacterial material for the electronic atomizer in this example is prepared by the following method. The specific steps are as follows:

[0064] (1) Take 0.5 g of hollow mesoporous silica microspheres with a particle size of 500 nm, place them in 2 g of the mixed essential oil of sweet orange and lavender, stir for 8 h, and perform rotary centrifugation at a centrifugal speed of 1000 revolutions / min to obtain hollow mesoporous silica microspheres loaded with sweet orange and lavender mixed essential oil.

[0065] (2) Take 0.5 g of the above - mentioned hollow mesoporous silica microspheres loaded with sweet orange and lavender mixed essential oil, 0.5 g of mesoporous silica microspheres with a particle size of 500 nm, and 99 g of polyethylene terephthalate - 1,4 - cyclohexanedimethanol ester. After mixing, they are injection - molded at 200 °C to obtain the antibacterial material for the electronic atomizer in this example.

[0066] Example 7

[0067] The antibacterial material for the electronic atomizer in this example is injection - molded from a mixture of 1 g of hollow mesoporous silica microspheres loaded with sweet orange, lemon and mint mixed essential oil, 1 g of mesoporous silica microspheres with a particle size of 400 nm, and 98 g of polyethylene terephthalate - 1,4 - cyclohexanedimethanol ester.

[0068] The antibacterial material for the electronic atomizer in this example is prepared by the following method. The specific steps are as follows:

[0069] (1) Take 1 g of hollow mesoporous silica microspheres with a particle size of 200 μm, place them in 3 g of the mixed essential oil of sweet orange, lemon and mint, stir for 8 h, and perform rotary centrifugation at a centrifugal speed of 1000 revolutions / min to obtain hollow mesoporous silica microspheres loaded with sweet orange, lemon and mint mixed essential oil.

[0070] (2) Take 1 g of the hollow mesoporous silica microspheres loaded with the mixed essential oils of sweet orange, lemon and mint, 1 g of mesoporous silica microspheres with a particle size of 400 nm, and 98 g of polyethylene terephthalate-1,4-cyclohexanedimethanol ester. After mixing, hot injection molding is carried out at 200 °C to obtain the antibacterial material for the electronic atomizer in this example.

[0071] Example 8

[0072] The antibacterial material for the electronic atomizer in this example is injection molded after mixing 5 g of the hollow mesoporous silica microspheres loaded with the mixed essential oils of sweet orange, lemon and mint, 1 g of mesoporous silica microspheres with a particle size of 900 nm, and 94 g of polyethylene terephthalate-1,4-cyclohexanedimethanol ester.

[0073] The antibacterial material for the electronic atomizer in this example is prepared by the following preparation method. The specific steps are as follows:

[0074] (1) Take 5 g of hollow mesoporous silica microspheres with a particle size of 20 μm, place them in 15 g of the mixed essential oils of sweet orange, lemon and mint, stir for 8 h, and perform rotary centrifugation at a centrifugal speed of 1000 r / min to obtain the hollow mesoporous silica microspheres loaded with the mixed essential oils of sweet orange, lemon and mint.

[0075] (2) Take 5 g of the hollow mesoporous silica microspheres loaded with the mixed essential oils of sweet orange, lemon and mint, 1 g of mesoporous silica microspheres with a particle size of 900 nm, and 94 g of polyethylene terephthalate-1,4-cyclohexanedimethanol ester. After mixing, hot injection molding is carried out at 200 °C to obtain the antibacterial material for the electronic atomizer in this example.

[0076] Example 9

[0077] The antibacterial material for the electronic atomizer in this example is injection molded after mixing 0.8 g of the hollow mesoporous silica microspheres loaded with the mixed essential oils of sweet orange, lemon and mint, 0.8 g of mesoporous silica microspheres with a particle size of 50 nm, and 98.4 g of polyethylene terephthalate-1,4-cyclohexanedimethanol ester.

[0078] The antibacterial material for the electronic atomizer in this example is prepared by the following preparation method. The specific steps are as follows:

[0079] (1) Take 0.8 g of hollow mesoporous silica microspheres with a particle size of 50 nm, place them in 2 g of the mixed essential oils of sweet orange, lemon and mint, stir for 8 h, and perform rotary centrifugation at a centrifugal speed of 1000 r / min to obtain the hollow mesoporous silica microspheres loaded with the mixed essential oils of sweet orange, lemon and mint.

[0080] (2) Take 0.8 g of the hollow mesoporous silica microspheres loaded with the mixed essential oils of sweet orange, lemon and mint, 0.8 g of mesoporous silica microspheres with a particle size of 50 nm, and 98.4 g of polyethylene terephthalate - 1,4 - cyclohexanedimethanol ester. After mixing, they are injection - molded at 200 °C to obtain the antibacterial material for the electronic atomizer in this example.

[0081] Example 10

[0082] The antibacterial material for the electronic atomizer in this example is injection - molded after mixing 0.1 g of hollow mesoporous silica microspheres loaded with the mixed essential oils of sweet orange, lemon and mint, 5 g of mesoporous silica microspheres with a particle size of 7 nm, and 94.9 g of polyethylene terephthalate - 1,4 - cyclohexanedimethanol ester.

[0083] The antibacterial material for the electronic atomizer in this example is prepared by the following method, and the specific steps are as follows:

[0084] (1) Take 0.1 g of hollow mesoporous silica microspheres with a particle size of 200 nm, place them in 0.4 g of the mixed essential oils of sweet orange, lemon and mint and stir for 8 h. Then perform rotary centrifugation at a centrifugal speed of 1000 revolutions / min to obtain the hollow mesoporous silica microspheres loaded with the mixed essential oils of sweet orange, lemon and mint.

[0085] (2) Take 0.1 g of the hollow mesoporous silica microspheres loaded with the mixed essential oils of sweet orange, lemon and mint, 5 g of mesoporous silica microspheres with a particle size of 7 nm, and 94.9 g of polyethylene terephthalate - 1,4 - cyclohexanedimethanol ester. After mixing, they are injection - molded at 200 °C to obtain the antibacterial material for the electronic atomizer in this example.

[0086] Examples 11 - 20

[0087] The materials used for the filters of the electronic atomizers in Examples 11 - 20 are respectively the antibacterial materials in Examples 1 - 10.

[0088] Examples 21 - 30

[0089] The materials used for the oil storage chambers of the electronic atomizers in Examples 21 - 30 are respectively the antibacterial materials in Examples 1 - 10.

[0090] Comparative Example 1

[0091] The difference between the antibacterial material for the electronic atomizer in this example and that in Example 1 is that: cyclodextrin loaded with sweet orange essential oil is used to replace the hollow mesoporous silica microspheres loaded with sweet orange essential oil in Example 1, and the others are the same as in Example 1.

[0092] The antibacterial material for the electronic atomizer in this example was prepared with reference to the preparation method of the antibacterial material for the electronic atomizer in Example 1.

[0093] Comparative Example 2

[0094] The difference between the antibacterial material for the electronic atomizer in this example and that in Example 1 is that: 7nm hollow mesoporous silica microspheres loaded with organic antibacterial agents are used to replace the hollow mesoporous silica microspheres loaded with sweet orange essential oil in Example 1, and the others are the same as in Example 1.

[0095] The antibacterial material for the electronic atomizer in this example was prepared with reference to the preparation method of the antibacterial material for the electronic atomizer in Example 1.

[0096] Comparative Examples 3-4

[0097] The materials used for the filter tips of the electronic atomizers in Comparative Examples 3-4 are the antibacterial materials in Comparative Examples 1-2 respectively.

[0098] Performance test:

[0099] 1. Antibacterial effect test

[0100] The antibacterial effect test was carried out with reference to the national standard GB / T31402. The specific test method is as follows:

[0101] Test strain: Escherichia coli (CMCC44102)

[0102] Culture media: nutrient agar culture solution, plate count medium, normal saline (0.85% NaCl solution)

[0103] Main equipment: autoclave, incubator, clean bench, constant temperature incubator, pipette, inoculation loop, culture dish

[0104] Test steps

[0105] (1) The bacteria were activated on the slant medium for 24 h, the strains were picked to prepare different dilution concentrations, cultured for 48 h, the concentration of the diluted bacterial solution was calculated, and the concentration of the prepared bacterial suspension was 10 5 -10 6 CFU / mL.

[0106] (2) 0.4 mL of the test bacterial suspension was sucked and added and mixed evenly. After shaking on the oscillator for 4 hours, 1.0 mL of the test bacteria and sample mixture was sucked and inoculated into the petri dish.

[0107] (3) At the same time, PBS (phosphate buffer solution) was used to replace the sample for parallel test as the positive control group. The same batch of culture media was taken and the antibacterial materials in Examples 1-4 were added respectively as the experimental group.

[0108] (4) All test samples and control samples were cultured at 36°C ± 1°C for 48 h.

[0109] (5) After 48 h, counting was performed under a colony counter.

[0110] The antibacterial properties of the antibacterial materials in Examples 1 to 4 measured according to the above test method are shown in Table 1 and Figure 1 as follows, where Figure 1 (a), Figure 1 (b), Figure 1 (c), Figure 1 (d) and Figure 1 (e) are the antibacterial property test diagrams of Example 1, Example 2, Example 3, Example 4 and the positive control group, respectively.

[0111] Table 1 Antibacterial property results of the antibacterial materials in Examples 1 to 4

[0112] Sample Colony count of test sample Colony count of positive control Bacteriostatic rate Example 1 <![CDATA[2.1×10 6 > <![CDATA[1.3×10 7 > 83.85％ Example 2 <![CDATA[1.2×10 6 > <![CDATA[1.3×10 7 > 91.00％ Example 3 <![CDATA[2.2×10 3 > <![CDATA[1.3×10 7 > 99.98％ Example 4 <![CDATA[8.9×10 5 > <![CDATA[1.3×10 7 > 93.54％

[0113] As can be seen from Table 1 and Figure 1 it can be known that the antibacterial materials in the present invention have good antibacterial effects, and the antibacterial rates are all higher than 83.85%. Moreover, the antibacterial ability of the antibacterial materials is related to the addition ratio of silica microspheres loaded with essential oil. The larger the addition ratio of silica microspheres loaded with essential oil, the better the antibacterial performance of the antibacterial materials.

[0114] (2) Flavor slow-release test

[0115] Using the filter tips for electronic atomizers prepared in Example 11 and Comparative Example 3 as test samples for antibacterial slow-release testing, the above filter tips were placed naked indoors, and the release amount of limonene in sweet orange oil was measured by headspace solid-phase microextraction and GC-MS every 1 month. The specific test results are as Figure 2 shown. As can be seen from Figure 2 it can be known that in the continuous 9 months, the filter tips in Example 11 showed continuous release of limonene in sweet orange oil, while the release amount of limonene in the filter tips of Comparative Example 3 was small, and the release amount decreased sharply and disappeared in a very short time. The reason is that cyclodextrin was damaged during hot injection molding, and limonene in sweet orange oil was also damaged to a certain extent during hot injection molding. Therefore, the release amount and release time of Comparative Example 3 are both less than those of Example 11, further indicating that the filter tips for electronic atomizers in Example 11 have excellent slow-release effects. After testing, the filter tips for electronic atomizers in Examples 12 to 20 and the oil storage chambers for electronic atomizers in Examples 21 to 30 all have slow-release effects equivalent to those of Example 11.

[0116] In addition, from Figure 2As can be seen, the present invention uses hollow mesoporous silica microspheres to load plant essential oils to achieve a significant sustained-release effect of the plant essential oils. In addition, the inventors found through experiments that using mesoporous carbon nanotubes, microporous carbon nanotubes, mesoporous graphene, and microporous graphene to replace the mesoporous silica microspheres can also achieve substantially the same sustained-release effect.

[0117] (3) Sensory evaluation test

[0118] The sensory evaluation panel consisted of 9 members, including 5 males and 4 females, who had received 1 year of relevant professional training. The filter tips in Examples 11 and Comparative Examples 3-4 were assembled into e-cigarettes respectively. After being puffed by the members of the sensory evaluation panel, the smell of sweet orange essential oil was divided into five fragrance notes: wine fragrance, flower fragrance, fruit fragrance, green fragrance, and sweet fragrance, and at the same time, its naturalness was scored; the scoring standard for aroma intensity was a 0-10 scale, where 0 means odorless, 1-3 means faintly detectable, 4-6 means moderate aroma, 7-8 means strong, and 9-10 means pungent; the scoring standard for naturalness was a 0-10 scale, where 0-3 means pungent chemical reagent smell, 4-6 means relatively real aroma and weak reagent smell, and 7-10 means vivid aroma and almost no reagent smell. After puffing the atomized liquid samples prepared in Example 11 and Comparative Examples 3-4, the aroma sensory evaluation results are shown in Table 2 below.

[0119] Table 2 Aroma sensory evaluation results of the filter tips in Example 11 and Comparative Examples 3-4

[0120] Wine fragrance Flower fragrance Fruit fragrance Green fragrance Sweet fragrance Natural sense Plastic smell Example 11 6 5 8 6 7 8 1 Comparative example 3 3 2 4 3 4 5 4 Comparative example 4 0 0 0 0 0 0 8

[0121] As can be seen from Table 2, the antibacterial filter tip prepared by mixing the plant essential oil loaded on mesoporous silica microspheres in Example 11 with polyethylene terephthalate-1,4-cyclohexanedimethanol ester by injection molding has a pleasant aromatic smell. The antibacterial filter tip prepared with cyclodextrin in Comparative Example 3 has an aromatic smell but its odor is weak. The antibacterial filter tip prepared with an organic antibacterial agent as the antibacterial material in Comparative Example 4 does not have an aromatic smell and has a strong plastic smell. The above results show that: by loading the plant essential oil with silica microspheres in the present invention, during the injection molding process, the plant essential oil can be prevented from being damaged at high temperatures, the plant essential oil can be protected to the greatest extent, and the plant essential oil can give the user a strong natural aromatic smell when the filter tip is used.

[0122] In summary, the antibacterial material for electronic atomizers in the present invention loads plant essential oils through an inorganic carrier. The plant essential oils are encapsulated inside the inorganic carrier, which can achieve the slow release of the plant essential oils, extend the release time of the plant essential oils, and at the same time endow the antibacterial material with a strong natural plant aroma. Since the inorganic carrier is coated outside the plant essential oils, the plant essential oils can be prevented from being damaged during injection molding, enabling the antibacterial material to have excellent long-term antibacterial effects. In addition, the present invention uses natural plant essential oils as antibacterial substances, which are more environmentally friendly and safe, and can avoid potential safety hazards to the body caused by antibacterial materials such as nano-silver and chemical antibacterial agents.

[0123] The above has described the embodiments of the present invention in detail. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the purpose of the present invention. In addition, without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

Claims

1. An antibacterial material for an electronic atomizer, characterized in that: The antibacterial material comprises the following raw materials for preparation in parts by weight: 80-99.9 parts of a thermoplastic polymer and 0.1-20 parts of an inorganic carrier loaded with a plant essential oil.

2. The antibacterial material for an electronic atomizer according to claim 1, wherein: The melting temperature of the inorganic carrier is higher than that of the thermoplastic polymer.

3. The antibacterial material for an electronic atomizer according to claim 1, wherein: The antibacterial material comprises the following raw materials for preparation in parts by weight: 90-99.4 parts of a thermoplastic polymer, 0.1-5 parts of an inorganic carrier loaded with a plant essential oil, and 0.5-9 parts of an inorganic carrier.

4. The antibacterial material for electronic atomizers according to claim 1 or 3, characterized in that: The thermoplastic polymer is selected from at least one of polyethylene terephthalate-1,4-cyclohexanedimethanol ester, polyethylene, polypropylene, polyvinyl chloride, ethylene-vinyl acetate copolymer, polystyrene, polyamide, polyterephthalate, polyethylene terephthalate, polycarbonate, polyurethane, polyphenylene ether, polyphenylene sulfide, polysulfone, and polyvinyl alcohol.

5. The antibacterial material for electronic atomizers according to claim 1, wherein: In the inorganic carrier loaded with a plant essential oil, the mass ratio of the inorganic carrier to the plant essential oil is 1:(1.5-4); preferably, the plant essential oil is selected from at least one of rose essential oil, verbena essential oil, sweet orange essential oil, lemon essential oil, mint essential oil, grapefruit essential oil, jasmine essential oil, mountain pepper essential oil, tea tree essential oil, thyme essential oil, and lavender essential oil.

6. The antibacterial material for e-cigarettes according to claim 1, 3 or 5, characterized in that: The inorganic carrier is a mesoporous inorganic material, a microporous inorganic material, or a combination thereof; preferably, the particle size of the inorganic carrier is 7 nm-500 μm, and the inorganic carrier is selected from at least one of mesoporous silica, mesoporous silicon particles, graphene, and carbon nanotubes.

7. The preparation method of the antibacterial material for the electronic atomizer according to any one of claims 1 to 6, characterized in that: Comprising the following steps: S1: Mix the inorganic carrier with the plant essential oil to obtain an inorganic carrier loaded with the plant essential oil. S2: Mix the raw materials including the inorganic carrier loaded with the plant essential oil and the thermoplastic polymer and then injection mold to obtain the antibacterial material for an electronic atomizer.

8. An accessory for an electronic atomizer, characterized in that: The accessory includes the antibacterial material for an electronic atomizer according to any one of claims 1-6; the accessory includes at least one of a filter tip and an oil storage chamber.

9. An electronic atomizer, characterized in that: Including the accessory for an electronic atomizer according to claim 8.

10. Use of the antibacterial material for an electronic atomizer according to any one of claims 1-6 in the field of electronic atomization.

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