WO2022111135A1 - Noyau d'atomisation, atomiseur le comprenant, et cigarette électronique - Google Patents

Noyau d'atomisation, atomiseur le comprenant, et cigarette électronique Download PDF

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Publication number
WO2022111135A1
WO2022111135A1 PCT/CN2021/124680 CN2021124680W WO2022111135A1 WO 2022111135 A1 WO2022111135 A1 WO 2022111135A1 CN 2021124680 W CN2021124680 W CN 2021124680W WO 2022111135 A1 WO2022111135 A1 WO 2022111135A1
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porous ceramic
atomizing core
ceramic matrix
electronic cigarette
core according
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PCT/CN2021/124680
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English (en)
Chinese (zh)
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冯舒婷
付尧
钱亚明
陈柳城
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深圳雾芯科技有限公司
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Publication of WO2022111135A1 publication Critical patent/WO2022111135A1/fr

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    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A24F40/46—Shape or structure of electric heating means
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/10—Devices using liquid inhalable precursors
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A24F40/42—Cartridges or containers for inhalable precursors

Definitions

  • the present application relates to an atomizing device, and in particular, to an atomizing core, an atomizer and an electronic cigarette including the same.
  • Electronic cigarettes are increasingly favored by consumers as a substitute for traditional tobacco.
  • Electronic cigarettes or electronic atomizers replace the smoke produced by the high-temperature combustion of traditional tobacco by atomizing the smoking material at low temperature to form aerosol for users to inhale.
  • the e-liquid of existing electronic cigarettes is usually transported to the atomizing core for atomization under capillary action.
  • burnt smell or other harmful substances are often produced due to dry burning or oil leakage of the atomizing core, and the fogging time is long.
  • the amount of smoke is small, which affects the user's experience and taste.
  • the present application provides an atomizing core, which can be used in electronic cigarettes, and includes a porous ceramic matrix containing 5%-30% alumina to solve the problems of slow fogging and small smoke volume of the existing atomizing core.
  • the electronic cigarette including the atomizing core of the present application has the advantages of faster fogging time, larger smoke volume, and no harmful substances such as tar and suspended particles, which can effectively improve the user's experience and taste.
  • the present application provides an atomizing core, which includes: a porous ceramic substrate; and a heat generating layer disposed on the porous ceramic substrate, wherein the porous ceramic substrate includes a first material, a second Two materials, a pore-forming agent and an optional sintering aid, the weight percentage of the first material in the porous ceramic substrate is 5%-30%.
  • the first material includes at least one of alumina, aluminum nitride or zirconia
  • the second material includes at least one of silicon dioxide, calcium oxide, magnesium oxide, silicon nitride or silicon carbide.
  • the present application provides an atomizer, which includes: a liquid storage cavity for containing liquid; and the above-mentioned atomization core, the atomization core absorbs liquid from the liquid storage cavity and atomize the liquid.
  • the present application provides an electronic cigarette, which includes the above atomizer.
  • FIG. 1 is a schematic structural diagram of an atomizing core according to an embodiment of the present application.
  • the terms “substantially,” “substantially,” “substantially,” and “about” are used to describe and account for small variations. When used in conjunction with an event or circumstance, the terms can refer to instances in which the event or circumstance occurs precisely as well as instances in which the event or circumstance occurs proximately.
  • a term when used in conjunction with a numerical value, a term may refer to a range of variation less than or equal to ⁇ 10% of the numerical value, such as less than or equal to ⁇ 5%, less than or equal to ⁇ 4%, less than or equal to ⁇ 3%, Less than or equal to ⁇ 2%, less than or equal to ⁇ 1%, less than or equal to ⁇ 0.5%, less than or equal to ⁇ 0.1%, or less than or equal to ⁇ 0.05%.
  • the difference between two values is less than or equal to ⁇ 10% of the mean of the values (eg, less than or equal to ⁇ 5%, less than or equal to ⁇ 4%, less than or equal to ⁇ 3%, less than or equal to ⁇ 2%, less than or equal to ⁇ 1%, less than or equal to ⁇ 0.5%, less than or equal to ⁇ 0.1%, or less than or equal to ⁇ 0.05%), then the two values are considered to be "substantially" the same.
  • a list of items joined by the terms "at least one of,” “at least one of,” “at least one of,” or other similar terms may mean the listed items any combination of .
  • the phrase “at least one of A and B” means A only; B only; or A and B.
  • the phrase "at least one of A, B, and C” means A only; or B only; C only; A and B (excluding C); A and C (excluding B); B and C (excluding A); or all of A, B, and C.
  • Item A may contain a single component or multiple components.
  • Item B may contain a single component or multiple components.
  • Item C may contain a single component or multiple components.
  • an embodiment of the present application provides an atomizing core 100 for an electronic cigarette, which includes a porous ceramic base 110 and a heat generating layer 120 , and the heat generating layer 120 is disposed on the porous ceramic base 110 .
  • the porous ceramic substrate 110 has a large number of micropores, which can absorb the smoke liquid, so as to heat and atomize the smoke liquid into smoke when the heating layer 120 is energized.
  • the thermal conductivity of the porous ceramic substrate 110 has an important influence on the atomization efficiency of the atomizing core 100.
  • the thermal conductivity of the porous ceramic substrate 110 By changing the thermal conductivity of the porous ceramic substrate 110, the heat loss of the heating layer 120 can be reduced, and the atomization of the smoke liquid can be improved. efficiency, saving the fogging time of the atomizing core 100, so that more efficient liquid-to-smoke conversion can be achieved under the same power, a faster fogging speed can be obtained, and a larger smoke volume can be achieved.
  • the inventor further studied and found that the penetration rate of the porous ceramic substrate 110 has an important influence on the atomization efficiency of the atomizing core 100 , and the problem of dry burning or oil leakage of the atomizing core can be solved by changing the penetration rate of the porous ceramic substrate 110 .
  • the penetration speed of the porous ceramic base 110 is controlled within a certain range, the penetration speed of the porous ceramic base 110 matches the heating efficiency of the heating layer 120, which can maximize the amount of smoke and provide users with a better smoking experience .
  • the thermal conductivity and penetration rate of the porous ceramic matrix are closely related to the material composition, pore size and porosity of the porous ceramic matrix.
  • the porous ceramic substrates prepared according to the current industrial preparation methods have disadvantages such as uneven distribution of voids, low porosity, poor mechanical properties, and low production efficiency, making it difficult to achieve porous ceramic substrates with low thermal conductivity and appropriate penetration rate .
  • the inventors combined the particle stacking method and the pore-forming agent addition method to prepare the porous ceramic matrix, so that the porous ceramic matrix has the advantages of high porosity, low thermal conductivity, controllable pore size, excellent mechanical properties, and high process stability.
  • the present application provides an atomizing core 100, which includes a porous ceramic base 110 and a heat generating layer 120 disposed on the porous ceramic base 110, wherein the porous ceramic base 110 includes alumina, silica, pore-forming agent and optional As a sintering aid, the weight percentage of alumina in the porous ceramic substrate 110 is about 5% to about 30%.
  • the porous ceramic matrix 110 includes a first material, a second material, a sintering aid and a pore former, and the weight ratio of the first material, the second material, the sintering aid and the pore former is (5-30 ):(40-70):(1-10):(10-20).
  • the weight ratio of the first material, the second material, the pore former, and the sintering aid may be 5:70:5:20, 10:65:5:20, 15:60:5: 20:, 15:65:5:15, 20:55:5:20, 20:50:10:20, 25:45:10:20, 25:50:10:15, 30:40:10:20 or 30:45:10:15 etc.
  • the weight ratio of the first material, the second material, the sintering aid and the pore former may be (5-20):(55-70):(1-8):(10-20).
  • the weight ratio of the first material, the second material, the pore former, and the sintering aid may be 5:70:5:20, 5:70:8:17, 10:65:5: 20, 10:70:5:15, 10:70:8:12, 15:60:5:20, 15:65:5:15, 15:70:5:10, 20:55:5:20 or 20:65:5:10 and so on.
  • the first material may include at least one of aluminum oxide, aluminum nitride, or zirconium oxide.
  • the second material may include at least one of silicon dioxide, calcium oxide, magnesium oxide, silicon nitride, or silicon carbide.
  • the first material is alumina and the second material is silica.
  • the pore former includes at least one of wood chips, graphite, carbon powder, cellulose, or starch.
  • the sintering aid includes at least one of calcium carbonate, magnesium carbonate, talc, or sodium silicate.
  • the sintering aid can improve the flexural strength and scratch resistance of the porous ceramic matrix 110 .
  • the porous ceramic matrix 110 may include alumina, silica, calcium carbonate, and cellulose. In some embodiments, the porous ceramic matrix 110 may include alumina, silica, magnesium carbonate, and starch. In some embodiments, the porous ceramic matrix 110 may include alumina, silica, sodium silicate, and carbon powder.
  • the thermal conductivity of the porous ceramic matrix 110 is from about 0.4 W/mK to about 1.0 W/mK.
  • the thermal conductivity of the porous ceramic matrix 110 may be about 0.4W/mK, about 0.45W/mK, about 0.5W/mK, about 0.55W/mK, about 0.6W/mK, about 0.65W /mK, about 0.7W/mK, about 0.75W/mK, about 0.8W/mK, about 0.85W/mK, about 0.9W/mK, about 0.95W/mK, about 1.0W/mK or any two of the above
  • the range of value composition for example, about 0.4W/mK-about 0.8W/mK, about 0.5W/mK-about 0.7W/mK, about 0.5W/mK-about 0.8W/mK, about 0.5W/mK-about 0.85 W/mK or about 0.5W/mK to about 1.0W/mK. Since
  • the pore size (D50) of the porous ceramic matrix 110 may be from about 15 ⁇ m to about 25 ⁇ m.
  • the pore size of the porous ceramic matrix 110 can be about 15 ⁇ m, about 16 ⁇ m, about 17 ⁇ m, about 18 ⁇ m, about 19 ⁇ m, about 20 ⁇ m, about 21 ⁇ m, about 22 ⁇ m, about 23 ⁇ m, about 24 ⁇ m, about 25 ⁇ m or can be It is a range composed of any two of the above values, for example, about 15 ⁇ m to about 20 ⁇ m, about 15 ⁇ m to about 22 ⁇ m, or about 20 ⁇ m to about 25 ⁇ m.
  • the porosity of the porous ceramic matrix 110 may be from about 30% to about 50%.
  • the porous ceramic matrix 110 may have a porosity of about 30%, about 35%, about 38%, about 40%, about 41%, about 42%, about 43%, about 44%, about 45%, about 46%, about 47%, about 48%, about 49%, about 50% or can be a range of any two of the above values, such as about 30% to about 45%, about 40% to about 45%, About 40% to about 50% or about 45% to about 50%, etc.
  • the particles on the surface of the porous ceramic matrix 110 may be at risk of being peeled off under the action of external force, which is manifested by the scratch resistance of the porous ceramic matrix.
  • the material composition, pore size and porosity of the porous ceramic matrix 110 determine the scratch resistance of the porous ceramic matrix 110 .
  • the scratch resistance of the porous ceramic matrix ranges from about 0.5 wt% to about 5 wt%.
  • the scratch resistance of the porous ceramic matrix ranges from about 0.5 wt %, about 0.6 wt %, about 0.7 wt %, about 0.8 wt %, about 0.9 wt %, about 1.0 wt %, about 1.5 wt %, about 2.0 wt %, about 2.5 wt %, about 3.0 wt %, about 3.5 wt %, about 4.0 wt %, about 4.5 wt %, about 5.0 wt % or can be a range of any two of the above values, such as about 0.5 wt % to about 1 wt %, about 1 wt % to about 3 wt %, or about 3 wt % to about 5 wt %, and the like.
  • the porous ceramic substrate 110 has good scratch resistance, which can reduce or prevent the ceramic powder from falling off.
  • the flexural strength of the porous ceramic matrix 110 may be about 6 Mpa to about 15 Mpa.
  • the flexural strength of the porous ceramic matrix 110 may be about 6Mpa, about 6.5Mpa, about 7Mpa, about 7.5Mpa, about 8Mpa, about 8.5Mpa, about 9Mpa, about 9.5Mpa, about 10Mpa, about 10.5Mpa, about 11Mpa, about 11.5Mpa, about 12Mpa, about 12.5Mpa, about 13Mpa, about 13.5Mpa, about 14Mpa, about 14.5Mpa, about 15Mpa or can be the range of any two values above, such as 6Mpa-about 10Mpa, 6Mpa-about 12Mpa, 9Mpa-about 12Mpa, 10Mpa-about 12Mpa, about 9Mpa-about 13Mpa, or about 10Mpa-about 15Mp
  • the thickness of the porous ceramic matrix 110 is about 0.5 mm to about 4 mm. In some embodiments, the thickness of the porous ceramic matrix 110 may be about 0.5 mm, about 1.0 mm, about 1.5 mm, about 2.0 mm, about 2.5 mm, about 3.0 mm, about 3.5 mm, about 4.0 mm, or may be any of the above The range of two numerical values, for example, about 0.5 mm to about 2 mm, about 1.0 mm to about 4 mm, about 1.5 mm to about 3 mm, or about 2.0 mm to about 4 mm, etc.
  • the penetration rate of the porous ceramic matrix 110 may be from about 0.8 mg/s.bar.mm 2 to about 4.0 mg/s.bar.mm 2 .
  • the permeation velocity refers to the weight of smoke liquid passing through the porous ceramic matrix per unit area (mm 2 ), unit pressure (bar) and unit time (s).
  • the penetration speed of the porous ceramic substrate 110 is greater than 4.0 mg/s.bar.mm 2 , the liquid ejaculation speed is too fast. Therefore, some e-liquid will be inhaled by the user along with the smoke in the future, resulting in an experience similar to oil leakage. .
  • the penetration rate of the porous ceramic matrix 110 may be about 0.8 mg/s.bar.mm 2 , about 0.9 mg/s.bar.mm 2 , about 0.96 mg/s.bar.mm 2 , about 1.0 mg/s.bar.mm 2 , about 1.2 mg/s.bar.mm 2 , about 1.5 mg/s.bar.mm 2 , about 1.8 mg/s.bar.mm 2 , about 2.0 mg/s.bar.
  • mm 2 about 2.3 mg/s.bar.mm 2 , about 2.5 mg/s.bar.mm 2 , about 2.8 mg/s.bar.mm 2 , about 3.0 mg/s.bar.mm 2 , about 3.5 mg /s.bar.mm 2 , about 3.6 mg/s.bar.mm 2 , about 3.8 mg/s.bar.mm 2 , about 3.85 mg/s.bar.mm 2 , about 4.0 mg/s.bar.mm 2 or can be a range of any two of the above values, such as about 0.8 mg/s.bar.mm 2 to about 2.0 mg/s.bar.mm 2 , about 0.9 mg/s.bar.mm 2 to about 2.5 mg/ s.bar.mm 2 , about 0.96 mg/s.bar.mm 2 to about 3.85 mg/s.bar.mm 2 , about 1.35 mg/s.bar.mm 2 to about 2.88 mg/s.bar.mm 2 , about 1.54 mg/s.bar.mm 2 to about 2.88 mg/s.bar.
  • the present application uses a combination of particle packing method and additive pore former method to prepare porous ceramic matrix 110 .
  • the alumina, silicon dioxide, sintering aid and pore-forming agent are uniformly mixed according to a certain weight ratio, then the mixed powder is put into a mold to form a green embryo, and the green embryo is sintered at a certain temperature to obtain Porous ceramic substrate 110 .
  • the heat generating layer 120 may be disposed on the porous ceramic base 110 in various suitable manners.
  • the heat generating layer 120 may be disposed on the porous ceramic base 110 by means of sputtering, transfer printing, or photolithography.
  • the heat-generating layer 120 is sputtered, transferred or photo-etched onto the porous ceramic base 110 , part of the heat-generating layer material will penetrate into the porous ceramic base 110 , thereby forming a physical engagement area with the porous ceramic base 110 .
  • the physical nip area has a depth of 10 ⁇ m-60 ⁇ m to improve the flexural strength of the porous ceramic matrix 110 and the peel resistance (powder drop) of the heat generating layer 120 .
  • the heating layer 120 may include a heating wire, and the heating wire may include iron, aluminum, platinum, palladium, iron-aluminum alloy, iron-nickel alloy, iron-chromium-aluminum alloy, iron-chromium alloy, palladium-copper alloy, gold-silver-platinum alloy, gold-silver alloy, At least one of palladium-silver alloy or gold-platinum alloy.
  • the present application further provides an atomizer, which includes a liquid storage chamber and the atomizing core of the present application.
  • the liquid storage chamber can contain liquid, and the atomizing core can absorb the liquid from the liquid storage chamber and atomize the liquid.
  • the heating power of the atomizer may be 6.5W-18W.
  • the heating power of the atomizer can be about 6.5W, about 7W, about 8W, about 9W, about 10W, about 11W, about 12W, about 13W, about 14W, about 15W, about 16W, About 17W, about 18W, or a range of any two values above, for example, about 6.5W to about 10W, about 6.5W to about 15W, or about 10W to about 18W.
  • the present application further provides an electronic cigarette, which includes the atomizer of the present application.
  • the e-cigarette liquid can be atomized by an atomizer to generate aerosol for users to inhale.
  • the electronic cigarette of the present application no longer burns dry or leaks oil, and the amount of smoke can meet the needs of users, providing users with better taste and experience.
  • the fogging time of the electronic cigarette is about 0.2s to about 0.5s.
  • the fogging time of the electronic cigarette may be about 0.2s, about 0.25s, about 0.3s, about 0.35s, about 0.4s, about 0.45s, or about 0.5s or any two of the above.
  • the range of composition is, for example, about 0.2s to about 0.4s or about 0.3s to about 0.5s.
  • the electronic cigarette of the present application has a faster fogging speed due to the atomizing core, so that the first puff of smoke has a better experience.
  • the useful life of the electronic cigarette may be about 500 to about 1000 puffs.
  • the service life of the electronic cigarette may be about 500, about 600, about 700, about 800, about 900, or about 1000 puffs or may be in the range of any two of the above values, such as about 500 to about 800 or about 800 - about 1000 mouthfuls.
  • the service life of the atomizing core in this application is measured by the following method: give enough smoke liquid, take the suction volume of 55mL, suction for 3 seconds and pause for 15 seconds as a cycle, and continue to circulate until the smoke volume TPM is less than 5mg. , record the number of cycles at this time as the service life of the atomizing core.
  • the electronic cigarette of the present application can avoid the problems of dry burning and oil leakage, maximize the amount of smoke, and have a long service life.
  • the smoke volume (TPM) of the electronic cigarette is about 4 mg to about 6.5 mg per puff.
  • the smoke volume of each puff is 55 mL, and the puffing time of each puff is 3 seconds. According to the statistics of the smoke demand of a large number of users, a better smoking experience can be obtained when the smoke volume is at least 4mg, and the experience is better when the smoke volume is 5mg-6.5mg.
  • the amount of smoke per puff of the electronic cigarette is about 4 mg, about 4.5 mg, about 5 mg, about 5.5 mg, about 6 mg, about 6.5 mg, or can be in the range of any two of the above values, such as about 5 mg to about 6 mg, about 5.5 mg to about 6 mg, about 4 mg to about 5 mg, or about 5 mg to about 6.5 mg, and the like.
  • Porous ceramic matrix the examples and comparative examples are uniformly mixed with alumina, silica sintering aid and pore-forming agent according to the ratios shown in Tables 1-1, 2-1 and 3-1 below, and then mixed well The powder is put into a mold to form a green embryo, and the green embryo is sintered at a certain temperature to obtain a porous ceramic matrix.
  • Atomizer The heating wire is arranged on the prepared porous ceramic substrate to obtain the atomizing cores in each of the examples and comparative examples. The nebulizer is then combined with the reservoir chamber to prepare the nebulizer.
  • Electronic cigarette Assemble the prepared atomizer with battery components, cigarette rods, etc. to prepare electronic cigarette.
  • Penetration speed The porous ceramic matrix sample is sealed and fixed at one end of the glass tube, the ceramic convex surface is facing outward, the inner diameter of the tube is 10mm, and the height of the e-liquid is 20cm; time 30 minutes from the first drop of e-liquid, and weigh the e-liquid during this process. and calculate the oil leakage rate (mg/s).
  • the viscosity of the smoke liquid is 180Pa.s.
  • Scratch resistance Select a weight of 1kg, press the porous ceramic matrix sample on 240-grit sandpaper and rub it for 15cm length, weigh the weight change of the porous ceramic matrix sample before and after friction, and calculate the change rate.
  • Smoke volume test the suction volume of each mouth is 55mL, the suction time of each mouth is 3 seconds, each cycle is 3 seconds of suction and 15 seconds of pause, and every ten cycles is a test.
  • Smoke volume per puff total smoke volume of ten cycles/10.
  • Thermal conductivity The porous ceramic substrate was tested by the hot wire method with a thermal conductivity meter, and the test temperature was 200 °C.
  • Fogging time 1. Connect the electronic cigarette to the smoking machine, start the smoking mode for 3S and stop for 15S; 2. Use a high-speed camera to shoot at the cigarette holder, and then select the time difference from the time when the indicator light of the smoking appliance lights up to the start of smoke from the cigarette holder from the video. , as the fogging time.
  • the service life of the atomizing core give enough smoke liquid, take the suction volume of 55mL, suction for 3 seconds and pause for 15 seconds as a cycle, continue to circulate until the smoke volume TPM is less than 5mg, and record the number of cycles at this time as the fog The service life of the core.
  • the weight ratio of alumina, silica, sintering aid and pore-forming agent in the porous ceramic matrix is (5-20):(55-70):(1-8):(10-20).
  • compositions of the porous ceramic substrates of Examples 1-1 to 1-16 are shown in Table 1-1.
  • Table 1-2 shows the relationship between the pore size, porosity and thermal conductivity of the porous ceramic matrix in the atomizing cores of Examples 1-1 to 1-9 and the fogging time.
  • the thickness of the porous ceramic substrates of Examples 1-1 to 1-16 was 1 mm, and the heating power was 6.5 W.
  • Table 1-3 shows the relationship between the pore size and porosity of the porous ceramic matrix in the electronic cigarettes of Example 1-1, Example 1-8, and Examples 1-10 to 1-16 and the permeation speed.
  • Table 1-4 shows the relationship between the pore size and porosity of the porous ceramic substrates of Example 1-1, Example 1-8, and Examples 1-10 to 1-16, and scratch resistance and flexural strength .
  • Table 1-5 shows the relationship between the penetration speed of the porous ceramic matrix and the amount of smoke and the temperature of the heating wire in the electronic cigarettes of Example 1-1, Example 1-8 and Examples 1-10 to 1-16, and the lifespan of e-cigarettes.
  • the weight ratio of alumina, silica, sintering aid and pore-forming agent in the porous ceramic matrix is (20-30):(40-50):(5-10):(10-20).
  • compositions of the porous ceramic substrates of Examples 2-1 to 2-10 are shown in Table 2-1.
  • Table 2-2 shows the relationship between the pore size, porosity and thermal conductivity of the porous ceramic matrix in the atomizing cores of Examples 2-1 to 2-6 and the fogging time.
  • the thickness of the porous ceramic substrates of Examples 2-1 to 2-10 was 2 mm, and the heating power was 9 W.
  • Example 2-1 Pore size/ ⁇ m Porosity/% Thermal conductivity/(W/mK) Fog time/s
  • Example 2-1 25 50 0.5 0.3
  • Example 2-2 twenty three 50 0.6 0.35
  • Example 2-3 20 50 0.75
  • Example 2-4 20 40 0.9 0.45
  • Example 2-5 20 30 1 0.5
  • Examples 2-6 15 30 1.2 0.55
  • Table 2-3 shows the relationship between the pore size and porosity of the porous ceramic matrix in the electronic cigarettes of Example 2-1 and Examples 2-7 to 2-10, and the permeation speed.
  • Example 2-1 25 50 3.85
  • Example 2-7 twenty two 50 3.6
  • Examples 2-8 twenty two 48 3.1 Examples 2-9 20
  • Examples 2-10 20 40 1.5
  • Table 2-4 shows the relationship between the pore size and porosity of the porous ceramic substrates of Example 2-1, Examples 2-7 to 2-10, and scratch resistance and flexural strength.
  • Example 2-1 Pore size/ ⁇ m Porosity/% Scratch resistance/% Bending strength/Mpa Example 2-1 25 50 1 7 Example 2-7 twenty two 50 0.9 7.5 Examples 2-8 twenty two 48 0.8 7.8 Examples 2-9 20 48 0.7 8 Examples 2-10 20 40 0.5 10
  • Table 2-5 shows the relationship between the penetration rate of the porous ceramic matrix in the electronic cigarettes of Example 2-1 and Examples 2-7 to 2-10, the amount of smoke and the temperature of the heating element, and the service life of the electronic cigarette.
  • the weight ratio of alumina, silica, sintering aid and pore-forming agent in the porous ceramic matrix is (35-50):(30-50):(7-15):(5-10 ).
  • compositions of the porous ceramic substrates of Comparative Examples 3-1 to 3-4 are shown in Table 3-1.
  • Table 3-2 shows the pore size, porosity, thermal conductivity, fogging time, scratch resistance, smoke amount, and heating wire temperature of the porous ceramic matrix in the atomizing cores of Comparative Examples 3-1 to 3-4. Relationship.
  • the thickness of the porous ceramic substrates of Comparative Examples 3-1 to 3-4 was 1 mm, and the heating power was 6.5 W.
  • Examples 1-1 to 1-16 By comparing the first set of examples (Examples 1-1 to 1-16), the second set of examples (Examples 2-1 to 2-10) and the third set of comparative examples (Comparative Examples 3-1 to 3- 4) It can be seen that when the porous ceramic matrix includes 5%-30% by weight of alumina, the scratch resistance of the porous ceramic matrix is greatly improved, and the porous ceramic matrix achieves a larger amount of smoke and a relatively low smog. Small fogging time and long service life.

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  • Porous Artificial Stone Or Porous Ceramic Products (AREA)

Abstract

L'invention concerne un noyau d'atomisation (100), un atomiseur le comprenant, et une cigarette électronique. Le noyau d'atomisation (100) comprend une matrice céramique poreuse (110) et une couche chauffante (120) disposée sur la matrice céramique poreuse (110). La matrice céramique poreuse (110) comprend un premier matériau, un second matériau, un agent de formation de pores et un auxiliaire de frittage facultatif ; et le pourcentage en poids du premier matériau dans la matrice céramique poreuse (110) est de 5 % à 30 %. La matrice céramique poreuse (110) est préparée par combinaison d'un procédé d'accumulation de particules et d'un procédé d'ajout d'agent de formation de pores, de telle sorte que la matrice céramique poreuse (110) ait un coefficient de conductivité thermique et une vitesse de percolation appropriés, et par conséquent, les problèmes de combustion à sec et de fuite de e-liquide du noyau d'atomisation (100) peuvent être efficacement résolus, l'efficacité de l'atomisation de e-liquide est améliorée, et le délai de génération de vapeur est réduit. Par conséquent, la cigarette électronique peut atteindre une vitesse de génération de vapeur relativement élevée et une quantité de vapeur relativement importante, ce qui permet d'améliorer l'expérience de vapotage d'un utilisateur.
PCT/CN2021/124680 2020-11-24 2021-10-19 Noyau d'atomisation, atomiseur le comprenant, et cigarette électronique WO2022111135A1 (fr)

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CN117223908A (zh) * 2022-06-06 2023-12-15 比亚迪精密制造有限公司 一种雾化芯和电子雾化装置

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CN108585810A (zh) * 2018-05-16 2018-09-28 深圳市商德先进陶瓷股份有限公司 微孔陶瓷及其制备方法和雾化芯
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