CN113816760A

CN113816760A - Electronic cigarette atomization core porous ceramic and preparation method thereof

Info

Publication number: CN113816760A
Application number: CN202111205700.0A
Authority: CN
Inventors: 欧泽华; 叶冬恩; 欧铭
Original assignee: Dongguan Huajiayu Electronic Technology Co ltd
Current assignee: Dongguan Huajiayu Electronic Technology Co ltd
Priority date: 2021-10-15
Filing date: 2021-10-15
Publication date: 2021-12-21

Abstract

The application relates to the technical field of electronic cigarettes, and particularly discloses an electronic cigarette atomizing core porous ceramic and a preparation method thereof; the electronic cigarette atomization core porous ceramic is prepared from the following raw materials in parts by weight: 55-70 parts of ceramic aggregate, 20-30 parts of sintering aid, 15-25 parts of pore-forming aid, 1-5 parts of adhesive and 30-50 parts of dispersion liquid; the pore-forming auxiliary agent comprises carboxymethyl cellulose and modified starch, wherein the mass ratio of the carboxymethyl cellulose to the modified starch is 1: 1-2; the preparation method of the electronic cigarette atomization core porous ceramic comprises the steps of drying, grinding, blank forming and sintering, and has the advantage of simple operation; this application has very strong hydroscopicity through adding modified starch, after the sintering, increases electron smog core porous ceramic's porosity, and then improves the absorption of electron smog core porous ceramic to the tobacco tar.

Description

Electronic cigarette atomization core porous ceramic and preparation method thereof

Technical Field

The application relates to the technical field of electronic cigarettes, in particular to electronic cigarette atomization core porous ceramic and a preparation method thereof.

Background

The electronic cigarette is an electronic product simulating a cigarette, has the same appearance, smoke, taste and feeling as the cigarette, and is a product which atomizes tobacco tar into smoke by means of heating atomization and the like and enables a user to suck the cigarette. The atomizing core of the electronic cigarette is an important structure for realizing atomization.

The atomizing core is an electronic cigarette atomizing core porous ceramic, and the preparation electronic cigarette atomizing core porous ceramic can be formed after being sintered usually, but the electronic cigarette atomizing core porous ceramic prepared after being sintered at high temperature still has the problems of low porosity and small specific surface area, so that too much smoke oil can not be adsorbed.

Disclosure of Invention

In order to improve the absorption of the electronic cigarette atomization core porous ceramic to tobacco tar, the application provides the electronic cigarette atomization core porous ceramic and the preparation method thereof.

First aspect, the application provides an electron smog core porous ceramic adopts following technical scheme:

the electronic cigarette atomization core porous ceramic is prepared from the following raw materials in parts by weight:

55-70 parts of ceramic aggregate

20-30 parts of sintering aid

15-25 parts of pore-forming assistant

1-5 parts of adhesive

30-50 parts of a dispersion liquid;

the pore-forming auxiliary agent comprises carboxymethyl cellulose and modified starch, wherein the weight part ratio of the carboxymethyl cellulose to the modified starch is 1: 1-2.

By adopting the technical scheme, the selected raw materials and the weight parts of the raw materials are in the preferable proportioning range of the application; the ceramic aggregate is added to serve as a supporting framework, so that the ceramic aggregate is convenient to combine with the sintering aid, and the atomizing core has better strength and toughness; the adhesive is added, so that the adhesive effect can be achieved, and the formation of the porous ceramic blank of the electronic cigarette atomizing core is facilitated; and the pore-forming auxiliary agent is added, and after sintering, porous electronic cigarette atomization core porous ceramic can be generated, so that the porosity of the electronic cigarette atomization core porous ceramic is improved.

Carboxymethyl cellulose, modified starch have the synergism, can play thickening, bonding, absorb water, the effect of moisturizing, carry out the ratio through above parts by weight to combine the dispersion that has the dispersion, can make carboxymethyl cellulose and modified starch fine dispersion in ceramic aggregate, the dispersion provides moisture simultaneously, makes modified starch water absorption inflation, and then after the sintering, makes electron smog core porous ceramic obtain porous structure, and then improves the absorption of atomizing core to the oil smoke.

Preferably, the modified starch is prepared by the following steps:

step 1: weighing 20-30 parts of starch and 100-120 parts of deionized water according to parts by weight, uniformly stirring, and heating to 60-80 ℃ until the mixture is pasty to obtain a mixture I;

step 2: weighing 0.1-0.2 part of ammonium ceric nitrate and 0.2-0.3 part of potassium persulfate according to parts by weight, adding the weighed materials into the mixture I obtained in the step 1, and stirring for 5-10 minutes to obtain a mixture II;

and step 3: weighing 5-6 parts of acrylic acid according to parts by weight, adjusting the pH value of the acrylic acid to 7-8 by using potassium hydroxide, adding the acrylic acid into the mixture II obtained in the step 2, and uniformly mixing to obtain a mixture III;

and 4, step 4: weighing 1-2 parts by weight of methacrylic acid, adjusting the pH value of the methacrylic acid to 7-8 by using potassium hydroxide, adding the methacrylic acid into the mixture III prepared in the step 3, and uniformly mixing to prepare a mixture IV;

and 5: weighing 1-2 parts of ferrous sulfate according to parts by weight, adding the ferrous sulfate into the mixture IV prepared in the step 4, introducing nitrogen, reacting for 1-3 hours, washing with ethanol with the mass fraction of 60-75%, filtering, washing with water, filtering again to obtain filtrate and filter residue, and collecting the filtrate to obtain the filtrate of the modified starch for later use; and drying the filter residue, crushing, and sieving by a sieve of 100 meshes and 200 meshes to obtain the modified starch.

By adopting the technical scheme, the pH of the acrylic acid in the step 3 and the pH of the methacrylic acid in the step 4 are both adjusted by adding a certain amount of potassium hydroxide, a small amount of potassium hydroxide is added in the adjusting process, the mixture is uniformly stirred and then is detected by using a pH test paper, and if the pH does not reach the range of 7-8, the potassium hydroxide is continuously added until the pH range is between 7 and 8; the method is characterized in that ammonium ceric nitrate and potassium persulfate are added to serve as initiators, starch generates free radicals, acrylic acid and methacrylic acid are added step by step to enable monomers to fully react with the starch to generate free radicals of starch monomers, chain growth polymerization is further carried out, polymers grafted on the starch are finally obtained, and modified starch is prepared.

Preferably, the starch is prepared by the following steps:

step A: weighing 50-100 parts by weight of natural cassava, removing epidermis and impurities, cleaning, slicing, putting into a drying oven at 300 ℃ of 250-;

and B: weighing 200-300 parts by weight of 10-15% citric acid solution, adding the mixture A obtained in the step A, uniformly stirring, soaking for 5-10min, washing with water, filtering, and removing filtrate to obtain a mixture B;

and C: weighing 150-200 parts by weight of 10-15% hydrochloric acid solution, adding the mixture B obtained in the step B, uniformly stirring, soaking for 5-10min, washing with water, filtering, and removing filtrate to obtain a mixture C;

step D: weighing 150-200 parts by weight of 15-20% sodium carbonate solution, adding the mixture C obtained in the step C, uniformly stirring, soaking for 5-10min, washing with water, filtering, and removing filtrate to obtain a mixture D;

step E: and (3) weighing 150 parts by weight of sodium hydroxide solution with the mass fraction of 5-10%, adding the mixture D obtained in the step (D), uniformly stirring, soaking for 30-60min, washing and filtering, removing the filtrate, drying the filter residue, grinding, and sieving by a sieve of 100 meshes to 200 meshes to obtain the starch.

Drying in an oven, dehydrating cassava, providing an acidic condition by a citric acid solution, precipitating starch and protein rapidly, removing impurities, adding a hydrochloric acid solution to further precipitate rapidly and remove residues, improving the purity of the starch, neutralizing the residual acid solution in the mixture C by adding a sodium carbonate solution, removing part of protein and other components, and adding a sodium hydroxide solution and a sodium carbonate solution which have a synergistic effect to make the solution alkaline, so that the protein and other components can be further removed, and the purity of the starch is improved.

Preferably, the adhesive comprises sodium silicate and/or polyimide, the sodium silicate and the polyimide have a synergistic effect, the bonding effect between porous ceramic materials of the electronic cigarette atomization core can be improved, and the formation of a porous ceramic blank of the electronic cigarette atomization core is facilitated.

Preferably, the sintering aid is one or more of kaolin, silicon nitride and tourmaline, and the kaolin is dehydrated and further decomposed at high temperature, so that the pore volume of the porous ceramic of the electronic cigarette atomization core is increased, and the probability of forming through holes in the porous ceramic of the electronic cigarette atomization core is increased; and the silicon nitride and the calcium-magnesium tourmaline have synergistic effect, so that the high temperature resistance of the electronic cigarette atomization core porous ceramic can be improved, and the effects of reducing the sintering temperature and promoting the densification of the electronic cigarette atomization core porous ceramic blank are achieved.

Preferably, the tourmaline, the silicon nitride and the kaolin are mixed according to the weight ratio of 1: 4-10: 15-20 parts by weight, the preferred range for parts by weight is as follows.

Preferably, the ceramic aggregate comprises kieselguhr, anorthite and quartz stone, wherein the weight ratio of the kieselguhr to the anorthite is 1: 4-5:6-7, and by adopting the technical scheme, the diatomite, the anorthite and the quartz stone have the advantages of firmness, wear resistance, high temperature resistance, wide sources and low cost, and the strength and the toughness of the electronic cigarette atomization core porous ceramic can be improved.

Preferably, the dispersion liquid is obtained by mixing high-activity polyisobutylene with the filtrate of the modified starch, and the weight part ratio of the high-activity polyisobutylene to the filtrate of the modified starch is 1: 30-50.

By adopting the technical scheme, the filtrate of the modified starch is the filtrate collected in the step 5 of preparing the modified starch in the filtering and washing process, the filtrate contains a small amount of ethanol and the modified starch, can be mixed with the high-activity polyisobutylene, and meanwhile, the contained small amount of the modified starch can act on the ceramic aggregate, so that the utilization rate of the modified starch is improved; the high-activity polyisobutylene does not contain chlorine, is environment-friendly and non-toxic, has good thermal stability and dispersibility, can highly improve the dispersibility of the carboxymethyl cellulose and the modified starch in the ceramic aggregate, simultaneously absorbs water and swells, and after high-temperature calcination, the porous ceramic of the electronic cigarette atomization core forms more pores, so that the porosity of the porous ceramic of the electronic cigarette atomization core is improved, and the absorption of the atomization core on tobacco tar is further improved.

Preferably, the weight part ratio of the high-activity polyisobutylene to the filtrate of the modified starch is 1:30-50, and the high-activity polyisobutylene can be completely dissolved in the weight part ratio.

In a second aspect, a preparation method of the electronic cigarette atomization core porous ceramic comprises the following steps:

and (3) drying: weighing 55-70 parts of ceramic aggregate and 20-30 parts of sintering aid by weight, uniformly mixing, and drying for 1-3h to obtain a premix A;

grinding: weighing 15-25 parts of pore-forming aid and 1-5 parts of adhesive according to parts by weight, adding the obtained premix A, uniformly mixing, and grinding for 2-5 hours to obtain a ground substance;

embryo forming: weighing 30-50 parts of dispersion liquid according to parts by weight, uniformly mixing the dispersion liquid with the obtained ground material, banburying for 2-6h at the temperature of 70-120 ℃, and performing injection molding to obtain a ceramic green body;

and (3) sintering: heating the obtained ceramic green body to 300-550 ℃, and sintering at constant temperature for 1-5 h; and heating to 800-1500 ℃, sintering at constant temperature for 3-5 h, and cooling to room temperature to obtain the electronic cigarette atomization core porous ceramic.

The electronic cigarette atomization core porous ceramic prepared by the method has the characteristics of high void ratio, good compressive strength and the like, and further improves the oil absorption efficiency of the electronic cigarette atomization core porous ceramic.

In summary, the present application has the following beneficial effects:

1. because the modified starch is adopted, the oil smoke atomizing core has the functions of thickening, bonding, water absorption and water retention, simultaneously the added carboxymethyl cellulose and the modified starch have the synergy, when the carboxymethyl cellulose, the modified starch and the ceramic aggregate are mixed, the dispersion liquid is added to have better dispersibility, so that the carboxymethyl cellulose and the modified starch are uniformly dispersed in the ceramic aggregate, simultaneously, the water absorption expansion efficiency of the modified starch is improved, and after high-temperature sintering, the porosity of the porous ceramic of the electronic smoke atomizing core is improved, thereby improving the absorption of the atomizing core on the oil smoke;

2. the high-activity polyisobutylene is preferably adopted in the application, does not contain chlorine, is environment-friendly and non-toxic, has thermal stability and dispersibility, can uniformly disperse carboxymethyl cellulose and modified starch in ceramic aggregate, and can improve the porosity of the porous ceramic of the electronic cigarette atomization core and improve the absorption of tobacco tar after being sintered;

3. through dehydration and further decomposition of kaolin at high temperature, the volume of the pores of the porous ceramic of the electronic cigarette atomization core is increased, and the probability of generation of the pores of the porous ceramic of the electronic cigarette atomization core is increased; and the silicon nitride and the tourmaline have the functions of lubricating and resisting high temperature, and play a role in reducing the sintering temperature and promoting the densification of the ceramic body.

Detailed Description

The present application will be described in further detail with reference to examples.

TABLE 1 sources of the respective raw materials

The manufacturer models of the raw materials in table 1 are all specific choices of additives in the experimental process, and are used for supporting the preparation examples and the embodiments of the application, but in practice, the raw materials for preparing the porous ceramic of the electronic cigarette atomizing core are not limited to the manufacturer models.

Preparation example of starch

Preparation example 1

A starch prepared by the steps of:

step A: weighing 100g of natural cassava, removing impurities on the surface of the cassava, cleaning, slicing, putting the cassava into a 300 ℃ oven, drying for 40min, and crushing the dried natural cassava to obtain a mixture A;

and B: weighing 300g of citric acid solution with the mass fraction of 15%, adding the mixture A obtained in the step A, uniformly stirring, soaking for 10min, and adding deionized water for washing while filtering to obtain a mixture B;

and C: weighing 200g of 15% hydrochloric acid solution, adding the mixture B obtained in the step B, uniformly stirring, soaking for 10min, and adding deionized water for washing while filtering to obtain a mixture C;

step D: weighing 200g of 20% sodium carbonate solution by mass, adding the mixture C obtained in the step C, uniformly stirring, soaking for 10min, and adding deionized water for washing while filtering to obtain a mixture D;

step E: and (3) weighing 150g of a 10% sodium hydroxide solution by mass fraction, adding the mixture D obtained in the step (D), reacting for 60min, adding deionized water while filtering for washing, washing and filtering, removing the filtrate, drying in an oven at 50 ℃, grinding, and sieving by a 200-mesh sieve to obtain the starch.

Preparation example 2

A starch prepared by the steps of:

step A: weighing 80g of natural cassava, removing impurities on the surface of the cassava, cleaning, slicing, putting into a 270 ℃ oven, drying for 40min, and crushing the dried natural cassava to obtain a mixture A;

and B: weighing 250g of citric acid solution with the mass fraction of 13%, adding the mixture A obtained in the step A, uniformly stirring, soaking for 7min, and adding deionized water for washing while filtering to obtain a mixture B;

and C: weighing 170g of 13% hydrochloric acid solution, adding the mixture B obtained in the step B, uniformly stirring, soaking for 7min, and adding deionized water for washing while filtering to obtain a mixture C;

step D: weighing 170g of 18% sodium carbonate solution, adding the mixture C obtained in the step D, uniformly stirring, soaking for 7min, and adding deionized water for washing while filtering to obtain a mixture D;

step E: weighing 140g of 7% sodium hydroxide solution by mass fraction, adding the mixture D obtained in the step D, reacting for 60min, adding deionized water while filtering, washing and filtering, removing filtrate, drying in a 50 ℃ oven, grinding, and sieving with a 150-mesh sieve to obtain the starch.

Preparation example 3

A starch prepared by the steps of:

step A: weighing 50g of natural cassava, removing impurities on the surface of the cassava, cleaning, slicing, putting the cassava into a 250 ℃ oven, drying for 40min, and crushing the dried natural cassava to obtain a mixture A;

and B: weighing 200g of a citric acid solution with the mass fraction of 10%, adding the mixture A obtained in the step 1, uniformly stirring, soaking for 5min, and adding deionized water for washing while filtering to obtain a mixture B;

and C: weighing 150g of 10% hydrochloric acid solution, adding the mixture B obtained in the step B, uniformly stirring, soaking for 5min, and adding deionized water for washing while filtering to obtain a mixture C;

step D: weighing 150g of 15% sodium carbonate solution, adding the mixture C obtained in the step C, uniformly stirring, soaking for 5min, and adding deionized water for washing while filtering to obtain a mixture D;

step E: and D, weighing 120g of sodium hydroxide solution with the mass fraction of 5%, adding the mixture D obtained in the step D, reacting for 30min, adding deionized water while filtering, washing and filtering, removing the filtrate, drying in an oven at 50 ℃, grinding and sieving by a 100-mesh sieve to obtain the starch.

Preparation example of modified starch

Preparation example 4

The preparation of modified starch includes the following steps:

step 1: weighing 30g of starch and 120g of water, adding the starch and the water into a three-necked bottle with a stirrer, uniformly stirring, and heating to 80 ℃ to be pasty to obtain a mixture I;

step 2: weighing 0.2g of ammonium ceric nitrate and 0.3g of potassium persulfate, adding the mixture into the mixture I obtained in the step 1, and stirring for 5-10 minutes to obtain a mixture II;

and step 3: weighing 6g of acrylic acid, adding potassium hydroxide to adjust the pH value of the acrylic acid to 8, adding the acrylic acid into the mixture II obtained in the step 2, and uniformly mixing to obtain a mixture III;

and 4, step 4: weighing 2g of methacrylic acid, adding potassium hydroxide to adjust the pH value of the methacrylic acid to 8, adding the methacrylic acid into the mixture III obtained in the step 3, and uniformly mixing to obtain a mixture IV;

and 5: weighing 2g of ferrous sulfate, adding the ferrous sulfate into the mixture IV obtained in the step 4, introducing nitrogen, reacting for 3 hours, washing by mass fraction, filtering, washing by using deionized water, filtering again to obtain filtrate and filter residue, and collecting the filtrate to obtain filtrate of modified starch for later use; and drying the filter residue in a drying oven at 50 ℃, crushing in a crusher, and sieving by a 100-mesh sieve to obtain the modified starch.

Preparation example 5

The preparation of modified starch includes the following steps:

step 2: 0.2g of ammonium ceric nitrate and 0.3 part of potassium persulfate are weighed and added into the mixture I obtained in the step 1, and the mixture is stirred for 7 minutes to obtain a mixture II;

and step 3: weighing 6g of acrylic acid, adjusting the pH value of the acrylic acid to 7 by using potassium hydroxide, adding the acrylic acid into the mixture II obtained in the step 2, and uniformly mixing to obtain a mixture III;

and 4, step 4: weighing 1g of methacrylic acid, adjusting the pH value of the acrylic acid to 7 by using potassium hydroxide, adding the acrylic acid into the mixture III obtained in the step 3, and uniformly mixing to obtain a mixture IV;

and 5: weighing 2g of ferrous sulfate, adding the ferrous sulfate into the mixture IV obtained in the step 4, introducing nitrogen, reacting for 1 hour, washing with ethanol with the mass fraction of 60%, filtering, washing with deionized water, filtering again to obtain filtrate and filter residue, and collecting the filtrate to obtain filtrate of modified starch for later use; and drying the filter residue in a drying oven at 50 ℃, crushing in a crusher, and sieving by a 150-mesh sieve to obtain the modified starch.

Preparation example 6

The preparation of modified starch includes the following steps:

step 1: weighing 25g of starch and 120g of water, adding the starch and the water into a three-necked bottle with a stirrer, uniformly stirring, and heating to 80 ℃ to be pasty to obtain a mixture I;

step 2: weighing 0.1g of ammonium ceric nitrate and 0.2g of potassium persulfate, adding the ammonium ceric nitrate and the potassium persulfate into the mixture I obtained in the step 1, and stirring for 10 minutes to obtain a mixture II;

and step 3: weighing 5g of acrylic acid, adjusting the pH value of the acrylic acid to 8 by using potassium hydroxide, adding the acrylic acid into the mixture II obtained in the step 2, and uniformly mixing to obtain a mixture III;

and 4, step 4: weighing 1g of methacrylic acid, adjusting the pH value of the methacrylic acid to 7 by using potassium hydroxide, adding the methacrylic acid into the mixture III obtained in the step 3, and uniformly mixing to obtain a mixture IV;

and 5: weighing 1g of ferrous sulfate, adding the ferrous sulfate into the mixture IV obtained in the step 4, introducing nitrogen, reacting for 1h, washing with 60% ethanol by mass fraction, filtering, washing with deionized water, filtering to obtain filtrate and filter residue, and collecting the filtrate to obtain filtrate of modified starch for later use; and drying the filter residue in a drying oven at 50 ℃, crushing in a crusher, and sieving by a 100-mesh sieve to obtain the modified starch.

Preparation example 7

The preparation of modified starch includes the following steps:

step 2: weighing 0.2g of ammonium ceric nitrate and 0.3g of potassium persulfate, adding the weighed materials into the mixture I obtained in the step 1, and stirring for 7 minutes to obtain a mixture II;

and 5: weighing 2g of ferrous sulfate, adding the ferrous sulfate into the mixture IV obtained in the step 4, introducing nitrogen, reacting for 2 hours, washing with 75% by mass of ethanol, filtering, washing with deionized water, filtering to obtain filtrate and filter residue, and collecting the filtrate to obtain filtrate of modified starch for later use; and drying the filter residue in a drying oven at 50 ℃, crushing in a crusher, and sieving by a 150-mesh sieve to obtain the modified starch.

Examples

Example 1

An electronic cigarette atomization core porous ceramic is prepared by the following steps:

and (3) drying: weighing 23g of diatomite, 33g of anorthite, 7g of quartz stone, 1g of tourmaline, 7g of anorthite and 18g of kaolin, uniformly mixing, placing in a 150 ℃ oven, and drying for 3 hours to obtain a premix A;

grinding: weighing 10g of carboxymethyl cellulose, 15g of modified starch, 4g of sodium silicate and 1g of polyimide, putting the weighed materials and the obtained premix A into a planetary grinding machine with the speed of 400r/min, and grinding for 5 hours to obtain a ground material;

embryo forming: weighing 1g of high-activity polyisobutylene and 40g of modified starch, uniformly mixing, adding the filtrate and the obtained ground substance into an internal mixer, heating to 120 ℃, carrying out internal mixing for 6 hours, and carrying out injection molding on the internally mixed material to obtain a ceramic green body;

and (3) sintering: and (3) putting the obtained ceramic blank into a calcining furnace, heating to 550 ℃ at the speed of 5 ℃/min, sintering at constant temperature for 5h, heating to 1500 ℃, sintering at constant temperature for 5h, and cooling to room temperature to obtain the electronic cigarette atomization core porous ceramic.

TABLE 2 contents (g) of each component in examples 1 to 8

Comparative example

Comparative example 1

Comparative example 1 differs from example 4 in that the modified starch in the feedstock is replaced by sodium silicate in equal amounts.

Comparative example 2

Comparative example 2 differs from example 5 in that the modified starch in the feedstock is replaced equally with sucrose.

Performance test

The performance tests were conducted for examples 1 to 8 and comparative examples 1 to 2.

Performance detection method

Tensile strength

The tensile strength of the samples was tested using an electronic universal tester according to the test standard GB/T4740-1999.

Porosity of the material

And testing the porosity according to GB/T24542-2009 testing standard.

TABLE 3 Experimental data for examples 1-8 and comparative examples 1-2

As can be seen by combining example 4 and comparative example 1 and combining Table 3, the porosity of comparative example 1 is lower than that of example 4, which shows that the modified starch added in example 4 has higher water absorption effect, so that after sintering, water is evaporated, starch is combusted, and the porous ceramic of the electronic cigarette atomizing core forms more pores, thereby improving the porosity of the porous ceramic of the electronic cigarette atomizing core.

It can be seen by combining example 5 and comparative example 2 and table 2 that the porosity in comparative example 2 is lower than that in example 5, which shows that the modified starch used in example 5 has higher water absorption than that used in sucrose used in comparative example 2, so that after sintering, water evaporation proceeds to form more pores in the porous ceramic of the electronic cigarette atomizing core, thereby improving the porosity of the porous ceramic of the electronic cigarette atomizing core.

Combining example 1 and example 4 with table 2, it can be seen that the porosity in example 1 is lower than that in example 4, indicating that the water absorption of the modified starch prepared using the commercially available starch in example 1 is inferior to that of the modified starch prepared using the starch prepared in the present application in example 4, and further indicating that the starch prepared in the present application has a higher content.

The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.

Claims

1. The electronic cigarette atomization core porous ceramic is characterized by being prepared from the following raw materials in parts by weight:

55-70 parts of ceramic aggregate

20-30 parts of sintering aid

15-25 parts of pore-forming assistant

1-5 parts of adhesive

30-50 parts of a dispersion liquid;

2. The electronic cigarette atomizing core porous ceramic of claim 1, wherein the modified starch is prepared by the following steps:

3. The electronic aerosolization core porous ceramic of claim 2, wherein the starch is produced by:

4. The electronic aerosolization core porous ceramic of claim 1, wherein the binder comprises sodium silicate and/or polyimide.

5. The electronic cigarette atomizing core porous ceramic as claimed in claim 1, wherein the sintering aid is one or more of kaolin, silicon nitride and tourmaline.

6. The electronic cigarette atomizing core porous ceramic of claim 5, wherein the ratio of tourmaline, silicon nitride and kaolin in parts by weight is 1: 4-10: 15-20.

7. The electronic aerosolization core porous ceramic of claim 1, wherein the ceramic aggregate comprises kieselguhr, anorthite and quartz stone, and the weight ratio of the kieselguhr to the anorthite is 1: 4-5:6-7.

8. The electronic aerosolization core porous ceramic of claim 2, wherein: the dispersion liquid is obtained by mixing high-activity polyisobutylene with filtrate of modified starch.

9. The electronic aerosolization core porous ceramic of claim 8, wherein: the weight portion ratio of the high-activity polyisobutylene to the filtrate of the modified starch is 1: 30-50.

10. A method of preparing the electronic aerosolization core porous ceramic of any one of claims 1-9, comprising the steps of: