Patent Description:
Compared with traditional electrothermal materials, such as resistance wire, semiconductor electrothermal film has great advantages. For example, it has higher electrothermal conversion efficiency, can achieve full surface coverage, increase heat transfer area, increase heat transfer rate, and have a longer service life. Which can be used in the heating atomizer of electronic cigarettes, but the working temperature of the semiconductor electrothermal film is usually <NUM>-<NUM>, which is relatively low compared to the working temperature of the resistance wire of <NUM>-<NUM>.

In addition, the current tin oxide type electrothermal film has a relatively obvious resistance change above <NUM> , and the attenuation is relatively severe, which limits the application range of the tin oxide type electrothermal film.

In addition, the heating rate of the electrothermal film is relatively slow, and the temperature is unstable in a short period of time, and it is easy to produce carcinogens when used in electronic cigarettes.

At present, the inorganic electrothermal film usually uses tin chloride pentahydrate or tin chloride or stannous chloride as the main component. The weight parts are usually <NUM>-<NUM> parts according to the formula, and the tin oxide electrothermal film is formed by hydrolysis. The doping method improves the performance of the electrothermal film, but the doping of this component cannot solve the above technical problems.

<CIT> provides a formula of the electrothermal film, which comprises antimony chloride, tin chloride, stannous chloride, tin oxide, stannous oxide, boron oxide, bismuth oxide and an organic solvent. The preparation method comprises the following steps: adding stannous oxide, stannous oxide, stannic chloride pentahydrate and the organic solvent into distilled water, fully and uniformly stirring, and filtering to obtain a solid and a filtrate; and adding antimony chloride, hydrochloric acid, stannous chloride, the organic solvent, methyl acetate, boron oxide and bismuth oxide into a filtrate to obtain an electrothermal film treatment solution, and plating the electrothermal film treatment solution on the substrate to obtain the electrothermal film. According to the transparent superlattice structure n-type semiconductor nano electrothermal film, light transmittance can reach more than <NUM>%, the surface of the film can emit heat uniformly, light energy cannot be converted in a heating process, and electrothermal efficiency reaches more than <NUM>%; and compared with a common electric stove wire, comprehensive energy is saved by <NUM>%-<NUM>%.

<CIT> provides a semi-conductor electro-thermal film. A treatment solution of the semi-conductor electro-thermal film comprises, by weight, <NUM>-<NUM> parts of stannic tetrachloride, <NUM>-2parts of antimony trichloride, <NUM>-<NUM> parts of ferric trichloride, <NUM>-<NUM> parts of manganese dichloride, <NUM>-<NUM> parts of chromium trichloride, <NUM>-<NUM> parts of bismuth chloride, <NUM>-<NUM> parts of nano-sized tin dioxide, <NUM>-<NUM> parts of carboxylated fullerene loading the nano-sized tin dioxide, <NUM>-<NUM> parts of functionalized fullerene, <NUM>-<NUM> parts of inorganic acid and <NUM>-<NUM> parts of solvent. The solvent comprises one kind or several kinds of deionized water, ethanol and isopropanol, the inorganic acid comprises one kind or several kinds of nitric acid, hydrochloric acid, sulphuric acid, boric acid, phosphoric acid and hydrofluoric acid, and the functionalized fullerene comprises one kind or several kinds of the carboxylated fullerene and esterificated fullerene.

Therefore, it is necessary to provide a new precursor solution for the semiconductor electrothermal film. As a further step, it is necessary to provide a method for preparing a semiconductor electrothermal film structure. As a further step, it is also necessary to provide a method for preparing an electrothermal structure.

The first object of the present disclosure is to provide a precursor solution for a semiconductor electrothermal film to solve the problems raised in the background art.

In order to achieve the above objective, the present disclosure provides a semiconductor electrothermal film precursor solution, comprising <NUM>-<NUM> parts of distilled water, component A, component B and component C.

The second object of the present disclosure is to provide a method for preparing a semiconductor electrothermal film structure, comprising preparation of precursor solution for semiconductor electrothermal film and preparation of semiconductor electrothermal film structure.

The preparation of precursor solution for semiconductor electrothermal film includes Step one and Step two.

Take <NUM>-<NUM> parts of tin tetrachloride pentahydrate and <NUM>-<NUM> parts of stannous chloride, mix them thoroughly, add them to the pH regulator, control the pH value to <NUM>-<NUM>, control temperature at <NUM>-<NUM>, stir until completely dissolved, add <NUM>-<NUM> parts glycerol, continue to stir for <NUM>-<NUM> minutes to obtain component A;.

Add <NUM> parts conductivity regulator and <NUM>-<NUM> part of aluminum chloride to the pH regulator, and the conductivity regulator is selected from a group consisting of antimony trichloride dihydrate, bismuth trioxide, aluminum trioxide, thallium dioxide and a mixture thereof, control pH value at <NUM>-<NUM>, control temperature at <NUM>-<NUM>, stir evenly to obtain component B; and.

Take <NUM>-<NUM> parts of ethanol according to proportion, add <NUM>-<NUM> parts of tin oxide and <NUM>-<NUM> parts of bismuth oxide to the ethanol, and mix them evenly to obtain component C;.

add all the component A and the component B to the component C, add <NUM>-<NUM> parts of distilled water, and after full reaction, filter out solid particles, then obtain the precursor solution for semiconductor electrothermal film;.

The preparation of semiconductor electrothermal film structure includes:
Heat a substrate to <NUM>-<NUM>, mix the precursor solution for semiconductor electrothermal film fully with <NUM>-<NUM> of air, spray on one side of the substrate with a spray gun, and cool to ambient temperature to obtain the semiconductor electrothermal film structure.

Preferably, the substrate is a ceramic material and/or glass material.

The third object of the present disclosure is to provide a method for preparing an electrothermal structure, wherein it comprises preparation of a semiconductor electrothermal film structure using above method, preparation of an electrode, and preparation of an electrothermal structure.

Print a conductive paste on the side of the semiconductor electrothermal film away from the substrate by screen printing to form a first electrode and a second electrode, the first electrode and the second electrode are arranged oppositely, and the mesh number of the screen is <NUM> -<NUM> mesh;.

The preparation of an electrothermal structure includes:
Heat the substrate coated with the semiconductor electrothermal film, the first electrode and the second electrode to <NUM>-<NUM>, dry for <NUM>-<NUM> minutes, heat to <NUM>-<NUM>, sinter for <NUM>-<NUM> minutes, and cool to obtain electrothermal structure.

Preferably, the conductive paste is conductive silver paste.

The above-mentioned pH regulator is used to regulate pH to prevent the premature hydrolysis of the chloride and cause deterioration. The above-mentioned pH regulator comprises, but not limited to, hydrochloric acid, glacial acetic acid, nitric acid, chloric acid, phosphoric acid, pyruvic acid, nitrous acid, and formic acid.

Compared with the prior art, the beneficial technical effects of the present disclosure are:.

In order to explain the embodiments of the present disclosure or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are merely embodiments of the present utility model. For those of ordinary skill in the art, without inventive work, other drawings can be obtained based on the structure shown in these drawings.

Description of reference signs: <NUM>-substrate; <NUM>-semiconductor electrothermal film; <NUM>-first electrode, <NUM>-second electrode, <NUM>-conductive member.

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without inventive work shall fall within the protection scope of the present disclosure.

In addition, the descriptions related to "first", "second", etc. in the present disclosure are merely used for descriptive purposes, but cannot be explained as indicating or implying their relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features.

In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on what can be achieved by a person of ordinary skill in the art. When the combination of technical solutions is contradictory or cannot be achieved, it should be considered that such a combination of technical solutions does not exist, and not within the scope of protection required by the utility model.

A precursor solution of a semiconductor electrothermal film, comprising component A, component B and component C, wherein the component A includes the following components by weight: <NUM> parts of tin tetrachloride pentahydrate, <NUM> parts of stannous chloride, <NUM> parts of glycerol, and also include a pH regulator, which regulates pH of the component A to <NUM>-<NUM>, and the pH regulator of the component A is glacial acetic acid;.

It also includes <NUM> parts of distilled water.

A precursor solution of a semiconductor electrothermal film, comprising component A, component B and component C, wherein the component A includes the following components by weight: <NUM> parts of tin tetrachloride pentahydrate, <NUM> parts of stannous chloride, <NUM> part of glycerol, and also includes a pH regulator, which regulates pH of the component A to <NUM>-<NUM>, and the pH regulator of the component A is glacial acetic acid;.

A precursor solution of a semiconductor electrothermal film, comprising component A, component B and component C, wherein the component A includes the following components by weight: <NUM> parts of tin tetrachloride pentahydrate, <NUM> parts of stannous chloride, <NUM> parts of glycerin, and also include a pH regulator, which regulates pH of the component A to <NUM>-<NUM>, and the pH regulator of the component A is glacial acetic acid;.

In other embodiments of the present disclosure, the conductivity modifier is selected from a group consisting of antimony trichloride dihydrate, bismuth trioxide, aluminum trioxide, thallium dioxide, and a mixture thereof.

It should be noted that the pH regulators in the component A and component B, for example, hydrochloric acid, glacial acetic acid, nitric acid, chloric acid, phosphoric acid, pyruvic acid, nitrous acid, and formic acid, play a role in regulateing pH and prevent chlorine from premature hydrolysis, and causes deterioration.

The following method is used to measure the semiconductor electrothermal film obtained in the above embodiment:.

Analysis of the above test results shows that:
The electrothermal film has the following properties: the resistance value is as low as <NUM>. 7Ω; the heating is fast, and the temperature can be increased to <NUM>-<NUM> in about <NUM> at the moment of power-on; breakdown resistance, working voltage and leakage current meet the standards, and no short-circuit breakdown phenomenon will occur; good high temperature resistance, the destruction temperature reaches <NUM>. The continuous working time is longer, more than <NUM>. The electrothermal transfer rate is higher, reaching more than <NUM>%; the temperature sudden change resistance is good.

In addition, it also has a faster heating speed, which can reach <NUM>% of the maximum temperature in <NUM> minutes, and the transparency is better, reaching <NUM>%-<NUM>%.

And according to the composition analysis, the electrothermal film has anti-oxidation, anti-corrosion, insulation, flame-retardant, moisture-proof, high hardness, non-toxic, no harmful radiation, no discharge of undesirable substances, the power factor of heating is <NUM>, and the heating water sample is tested as small molecular clusters, and have, far infrared rays that are most suitable for the human body to absorb.

Compared with the prior art, the present disclosure has achieved the above-mentioned beneficial technical effects, mainly because the present disclosure adjusts the proportion of tin tetrachloride pentahydrate and stannous chloride, and forms polycrystalline tin oxide and a certain amount of tin oxide and stannous oxide in a proportion after high-temperature hydrolysis, which forms an n-type conductive electrothermal film, and through the adjustment of the proportion, the conductivity of the electrothermal film formed after high-temperature hydrolysis is <NUM>-20Ω/cm<NUM>, and the tin oxide is changed by adjusting the type and proportion of the conductivity regulator. In the selected proportion range, the conductivity can be increased and the resistance value can be reduced at the same time to achieve rapid heating in a short time. The synergy among the above-mentioned components and the selected proportion of aluminum chloride (hydrolyzed into aluminum oxide at high temperature), tin oxide and bismuth oxide reduces the temperature coefficient of the semiconductor electrothermal film, and increases the resistance to sudden temperature changes and attenuation of the semiconductor electrothermal film.

The present disclosure also provides a method for preparing a semiconductor electrothermal film structure, which includes the precursor solution of the above-mentioned semiconductor electrothermal film.

A method for preparing a precursor solution of a semiconductor electrothermal film includes the following steps:.

The specific proportion is the same as that of Example <NUM>, and the substrate is made of ceramic material and/or glass material.

The steps of the preparation method of the semiconductor electrothermal film structure are the same as those of the embodiment <NUM>, and the specific proportion is the same as that of the embodiment <NUM>.

It should be noted that in the above embodiment, the substrate is heated to <NUM>-<NUM> because the suitable temperature of the semiconductor electrothermal film precursor solution obtained according to proportion is <NUM>-<NUM>. The temperature adjustment reduces the resistance difference on electrothermal film, lower the possibility of burning. The temperature is lower than the above value; the film forming effect is poor. The choice of air proportion affects the atomization pressure of the precursor solution. When the proportion is lower than the selected proportion, the atomization will be insufficient, causing the unevenness of the coating. If the proportion is higher than the selected proportion, the air pressure will be too high, which will dilute the reagent components in the atomization, resulting in the presence of most of the air, and the amount of the reagent becomes too small to form a film, and the air should be dry, it must not be mixed with impurities such as water vapor, otherwise the composition proportion of the precursor solution will be affected when it is mixed.

The present disclosure also provides a method for preparing an electrothermal structure, including the above-mentioned method for preparing a semiconductor electrothermal film structure.

A method for preparing an electrothermal structure includes the method for preparing a semiconductor electrothermal film structure of the above-mentioned embodiment, and further includes the following steps:.

The conductive paste is printed on the side of the semiconductor electrothermal film away from the substrate by screen printing to form the first electrode and the second electrode, and the first electrode and the second electrode are arranged oppositely, and the mesh number of the screen is <NUM> -<NUM> mesh;.

Heat the substrate coated with the semiconductor electrothermal film, the first electrode and the second electrode to <NUM>-<NUM>, dry for <NUM>-<NUM> minutes, heat to <NUM>-<NUM> for <NUM>-<NUM> minutes, and cool to obtain the electrothermal structure. The substrate is a ceramic material and/or a glass material, and the conductive paste is a conductive silver paste.

In Example <NUM>, the mesh size of the screen is <NUM>-<NUM>, and the thickness of the electrode can be controlled. The thickness of the electrode affects the voltage and current carried by the electrode. The proportion of the above-mentioned components is the same as that of Example <NUM>.

The difference from Example <NUM> is the proportion of the components of the semiconductor electrothermal film. The proportion of this example is the same as that of Example <NUM>.

The difference from Example <NUM> is the composition proportion of the semiconductor electrothermal film precursor solution. The composition proportion of this example is the same as that of Example <NUM>.

The electrothermal structure obtained in the above embodiment refer to <FIG>, including a substrate <NUM>, a first electrode <NUM>, a second motor <NUM>, and a semiconductor electrothermal film <NUM>. The semiconductor electrothermal film <NUM> is coated on one side of the substrate <NUM>. It is characterized in that the semiconductor electrothermal film <NUM> is obtained by the preparation method of the above embodiment, the first electrode <NUM> and the second electrode <NUM> are arranged on the side of the semiconductor electrothermal film <NUM> away from the substrate <NUM>, and the first electrode <NUM> and the second electrode <NUM> are arranged opposite to each other, and further includes a conductive member <NUM> arranged on the first electrode <NUM> and the second electrode <NUM>, which is used to transmit the electric energy of the external power source to the first electrode <NUM> and the second electrode.

The substrate <NUM> is a ceramic material and/or glass material, the material of the substrate <NUM> can be changed according to actual use, and the electrothermal structure in which the substrate <NUM> is made of a ceramic material can be used as an atomizer of an electronic cigarette.

The first electrode <NUM> and the second electrode <NUM> are made of silver material, mainly because silver has the properties of high temperature resistance, resistance to sudden temperature changes, moisture resistance and oxidation resistance.

As an electronic cigarette atomizer, in order to facilitate the placement of atomized substances, a receiving cavity is provided in the substrate <NUM>.

It should be noted that, according to actual use, the thickness and shape of the substrate <NUM> can be varied, and the shape and position of the first electrode <NUM> and the second electrode <NUM> can be adjusted. Referring to <FIG>, the first electrode <NUM> and the second electrode <NUM> have a square structure, and the first electrode <NUM> and the second electrode <NUM> are arranged opposite to each other in parallel, the first electrode <NUM> and the second electrode <NUM> can also be other shapes and other forms of opposite arrangement, refer to <NUM>, for example, the first electrode <NUM> has a ring structure, for example, a circular ring, the second electrode <NUM> has a circular structure, and the second electrode <NUM> is arranged in the ring of the first electrode <NUM>.

It should be noted that the conductive member <NUM> includes but is not limited to a wire and a conductive sheet, and the installation method of the conductive member <NUM> includes, but is not limited to, magnetic attraction, thimble, buckle, and soldering.

Claim 1:
A precursor solution of a semiconductor electrothermal film (<NUM>), wherein it comprises:
component A, wherein the component A comprises the following components in parts by weight: <NUM>-<NUM> parts of tin tetrachloride pentahydrate, <NUM>-<NUM> parts of stannous chloride and <NUM>-<NUM> parts of glycerol, and also comprises a pH regulator, a pH of the component A is <NUM>-<NUM>;
component B, wherein the component B comprises the following components by weight: <NUM>-<NUM> parts of a conductivity regulator, the conductivity regulator is selected from a group consisting of antimony trichloride dihydrate, bismuth trioxide, aluminum oxide, thallium dioxide and a mixture thereof, <NUM>-<NUM> part of aluminum chloride, also comprising a pH regulator, a pH of the component B is <NUM>-<NUM>;
component C, wherein the component C comprises the following components in parts by weight: <NUM>-<NUM> parts of tin oxide, <NUM>-<NUM> parts of bismuth oxide, and <NUM>-<NUM> parts of ethanol; and
<NUM>-<NUM> parts of distilled water.