CN113462030A - Fiber elastic atomizing core and preparation method thereof - Google Patents
Fiber elastic atomizing core and preparation method thereof Download PDFInfo
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- CN113462030A CN113462030A CN202110699146.XA CN202110699146A CN113462030A CN 113462030 A CN113462030 A CN 113462030A CN 202110699146 A CN202110699146 A CN 202110699146A CN 113462030 A CN113462030 A CN 113462030A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
- C08L1/02—Cellulose; Modified cellulose
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
- C08L1/08—Cellulose derivatives
- C08L1/26—Cellulose ethers
- C08L1/28—Alkyl ethers
- C08L1/286—Alkyl ethers substituted with acid radicals, e.g. carboxymethyl cellulose [CMC]
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
- C08L23/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
- C08L23/22—Copolymers of isobutene; Butyl rubber ; Homo- or copolymers of other iso-olefins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L29/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical; Compositions of hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers
- C08L29/02—Homopolymers or copolymers of unsaturated alcohols
- C08L29/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L3/00—Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
- C08L3/02—Starch; Degradation products thereof, e.g. dextrin
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- Nonwoven Fabrics (AREA)
Abstract
The application relates to the technical field of atomization, and particularly discloses a fiber elastic atomization core and a preparation method thereof. The fiber elastic atomizing core comprises the following raw materials in parts by weight: 5-20 parts of fiber powder and 100-500 parts of curing agent, wherein the fiber powder and the curing agent are pressed and formed to generate the fiber elastic atomization core. The application discloses fibre elasticity atomizing core can closely laminate with the heater strip, and it has that the compression volume is controllable, and atomization effect is good, the high advantage of atomizing stability.
Description
Technical Field
The application relates to the technical field of atomization, in particular to a fiber elastic atomization core and a preparation method thereof.
Background
The ability of the atomizing assembly to convert an atomized liquid into an aerosol is an important element commonly used in the art of atomization. Atomization component is including leading liquid and heater strip, and when atomization component used, it absorbed the atomized liquid to lead the liquid, and heater strip circular telegram heat supply simultaneously, and the atomized liquid is heated the atomizing and is generated aerosol, supplies the user to aspirate.
At present, the liquid guide in the market is generally selected from porous ceramic or cotton cores. The porous ceramic material takes corundum, silicon carbide and other raw materials as main materials, is stable and durable, has stable atomization effect, but has low flavor reduction degree and high cost compared with a cotton core, so that the main flow guide liquid is still the cotton core.
The raw material of the cotton core is developed from absorbent cotton to long stapled cotton, the raw material of the cotton core is twisted to form yarns, and a plurality of yarns are twisted to form the cotton rope. Generally, combine heater strip and cotton rope through around cotton or package cotton technique, nevertheless because the cotton rope is soft, take place deformation easily, the laminating compactness of cotton rope and heater strip is poor, leads to the atomizing core easily to produce when using the cotton rope to atomize and pastes core or explode phenomenon such as oil, has influenced the atomizing stability of atomizing core.
Disclosure of Invention
In order to solve the problem of poor atomization stability of the cotton core, the application provides a fiber elastic atomization core and a preparation method thereof.
The application provides a fibre elasticity atomizing core adopts following technical scheme:
the elastic fiber atomizing core comprises the following raw materials in parts by weight: 5-20 parts of fiber powder and 500 parts of curing agent, wherein the fiber powder and the curing agent are pressed and molded to generate the fiber elastic atomizing core.
By adopting the technical scheme, the fiber powder is microcosmically fibrous and arranged in a bundle shape, macroscopically is a dispersion system consisting of a large number of particles, the curing agent infiltrates the fiber powder, the curing agent and the compression molding process have a common effect, the fiber powder is broken and deformed and displaced, the contact area among the fiber powder particles is obviously increased, strong bond force appears among atoms on the surface of the fiber powder particles, the connection among the fiber powder is increased, the fiber powder is subjected to elastic-plastic deformation to form a porous body structure, the fiber elastic atomizing core is obtained, and the pores of the fiber elastic atomizing core are through pores, so that the effective porosity of the fiber elastic atomizing core is higher, therefore, the fiber elastic atomizing core has better oil guiding capacity, the possibility of the paste core is reduced, and the atomizing effect is improved.
Compare in traditional cotton core looks, fibre elasticity atomizing core internal particle presents the bigger material form of major diameter for fibre elasticity atomizing core has certain intensity and elasticity, and fibre elasticity atomizing core can realize closely laminating with the heater strip by oneself under less compression, and the area of contact of heater strip and fibre elasticity atomizing core increases, and heating efficiency improves, reduces the possibility that the fried oil phenomenon appears, has improved atomizing core's atomizing stability.
Preferably, the particle size of the fiber powder is 75 μm to 10 mm.
Preferably, the particle size of the fiber powder is 150 to 250 μm.
Preferably, the fiber powder is selected from plant fiber powder and/or inorganic fiber powder. More specifically, the organic fiber powder includes, but is not limited to, cotton linter powder and paper powder, and the inorganic fiber powder includes, but is not limited to, glass fiber powder, slag powder and aluminum silicate powder.
Preferably, the fiber powder is prepared by compounding cotton linter powder and glass fiber powder according to the weight ratio of 9: 1.
Through adopting above-mentioned technical scheme, the main material of cotton linter powder is the cellulose, and the amorphous district of cellulose can imbibition swelling for fibre elasticity atomizing core liquid inflation, and fine powder of glass can regard as filler material, improves the intensity of fibre elasticity atomizing core, and under combined action between them, the invariable controllable of the compressive capacity of fibre elasticity atomizing core, and the laminating between fibre elasticity atomizing core and the heater strip is inseparabler, further improves the atomization effect and the atomizing stability of fibre elasticity atomizing core.
Preferably, the curing agent consists of a binder and a solvent, and the content of the binder in the curing agent is 1-15 wt%.
More specifically, the binder of the present application includes, but is not limited to, starch-based binders (e.g., starch, dextrin, syrup, etc.), sugar-based binders (e.g., sodium carboxymethyl starch, carboxyethyl starch, sodium starch phosphate, etc.), gum-based binders (e.g., gum arabic, gum ghatti, etc.), cellulose derivative-based binders (e.g., methyl cellulose, carboxymethyl cellulose, etc.), water-soluble polymer-based binders (e.g., polyvinyl alcohol, polyvinyl methyl ester, polyacrylamide, isobutylene maleic anhydride copolymer, etc.).
The solvent of the application includes but is not limited to water and ethanol, and water and ethanol are low-viscosity nontoxic volatile solvents, and on one hand, the adhesive can be diluted, the overall viscosity of the curing agent is reduced, and the curing agent has better fluidity, and on the other hand, in the compression molding process, the water and ethanol have lower boiling points and are volatile, and can be used as a pore-forming agent, so that the porosity of the fiber elastic atomization core is increased.
Preferably, the binder is prepared by compounding polyvinyl alcohol and isobutylene maleic anhydride copolymer or starch and sodium carboxymethylcellulose.
By adopting the technical scheme, the adhesive is compounded by adopting polyvinyl alcohol and isobutylene maleic anhydride copolymer or starch and sodium carboxymethyl cellulose, so that the adhesive strength between the fiber powder bodies can be effectively improved, and the connection between the fiber powder bodies is firmer.
Preferably, the raw materials also comprise a dispersing agent, and the weight part of the dispersing agent is 1-5 parts.
Preferably, the dispersant is selected from one or more of sodium citrate, stearic acid, sodium stearate, hydroxyethyl ethylenediamine, polyacrylamide and hydroxymethyl cellulose.
Through adopting above-mentioned technical scheme, the addition of dispersant can make fibre powder disperse evenly in the curing agent on the one hand, and the thick liquids mobility of formation improves, is favorable to later stage compression moulding, makes the hole in the fibre elasticity atomizing core even, and on the other hand, dispersant play the lubrication action, can make fibre elasticity atomizing core drawing of patterns fast.
In a second aspect, the present application provides a method for preparing a fibrous elastic atomizing core, which adopts the following scheme.
A preparation method of a fiber elastic atomizing core comprises the following steps: weighing fiber powder and a curing agent according to the formula ratio, preparing into slurry, filling the slurry into a mold, maintaining the pressure for 0-2 min under the molding pressure of 0.1-10 MPa, performing compression molding, drying at 70-300 ℃, and demolding to obtain the fiber elastic atomization core.
Through adopting above-mentioned technical scheme, the fibre powder makes solid-state atomizing cotton core through the compression moulding technology for atomizing cotton core has higher porosity, and the hole is even, and the oil storage performance is good, makes atomizing core's atomization effect superior, and is good in the taste, and atomizing cotton core has certain hardness and elasticity simultaneously, and the compression volume is little, can closely laminate with the heater strip, makes atomizing cotton core's atomization effect stable.
In summary, the present application has the following beneficial effects:
1. because this application adopts fibre powder and curing agent, through the compression moulding, make fibre elasticity atomizing core, fibre elasticity atomizing core pore evenly has better oil guide ability, reduce the possibility that the core appears of pasting, fibre elasticity atomizing core has certain intensity and elasticity simultaneously, fibre elasticity atomizing core can be under less compressive capacity, can realize closely laminating with the heater strip voluntarily, the area of contact increase of heater strip and fibre elasticity atomizing core, heating efficiency improves, reduce the possibility that the oil phenomenon appears of exploding, the atomization stability of atomizing core has been improved.
2. In the application, polyvinyl alcohol and isobutylene maleic anhydride copolymer or starch and sodium carboxymethyl cellulose are preferably compounded as the binder, so that the bonding strength between the fiber powder bodies can be effectively improved, and the fiber powder bodies are more firmly connected.
3. The preferred dispersant that adopts in this application, through the dispersion of dispersant, can make fibre powder disperse evenly in the curing agent on the one hand, the thick liquids mobility of formation improves, is favorable to later stage compression moulding, makes the hole in the fibre elasticity atomizing core even, and on the other hand, the dispersant plays the lubrication action, can make fibre elasticity atomizing core fast demoulding.
Detailed Description
Unless otherwise specified, the sources of the raw materials for the various examples of the present invention are shown in table 1 below.
TABLE 1 sources of raw materials
Preparation example
Preparation examples 1 to 4
A cotton linter powder is prepared by grinding short linter cotton purchased from Weifang Toulong Cotton Co., Ltd in a planetary ball mill (trade name Rui Shen Bao PrepBM-01A type), setting the rotation speed of the planetary ball mill, sieving, and controlling the granularity of discharged material;
wherein the discharge particle size of preparation example 1 is 50 μm to 75 μm;
the discharge particle size of preparation example 2 is 75 μm to 150 μm;
the discharge particle size of preparation example 3 is 150 to 250 μm;
the particle size of the discharge of preparation example 4 is 250 μm to 10 mm.
Preparation example 5
A glass fiber powder is prepared by grinding glass fiber powder purchased from glass fiber Limited company of Jiujiang Lifeng in planetary ball mill for the second time (trade mark is Ruishenbao PrepBM-01A), sieving, and controlling the discharge particle size to 150-250 μm.
Preparation example 6
A shredded paper powder is prepared by sieving shredded paper powder purchased from a mineral processing factory of Lingshouda to obtain shredded paper powder with a particle size of 150-250 μm.
Examples
Example 1
The fiber elastic atomizing core is prepared by the following preparation steps:
weighing 10g of the cotton linter powder prepared in the preparation example 3, 90g of distilled water and 10g of polyvinyl alcohol, and mixing and stirring the materials to form slurry; and injecting the slurry into a mold, slowly pressurizing to 0.5Mpa, maintaining the pressure for 30s, demolding, and drying the semi-finished product atomized core in an oven at 100 ℃ to obtain the fiber elastic atomized core.
Examples 2 to 6
A fiber elastic atomizing core is different from the fiber elastic atomizing core in example 1 in the composition and weight of raw materials, and the specific composition and weight are shown in the following table 2.
TABLE 2 composition and weight of the raw materials
Examples 7 to 12
The fiber elastic atomizing core is different from the fiber elastic atomizing core in example 1 in the composition of fiber powder, and the specific composition is shown in the following table 3.
TABLE 3 composition of the fiber powder
Examples 13 to 17
A fiber elastic atomizing core is different from the fiber elastic atomizing core in example 12 in that the curing agent has different compositions, and the specific compositions are shown in the following table 4.
TABLE 4 composition of curing agent
Examples 18 to 20
The fiber elastic atomizing core is different from the fiber elastic atomizing core in the embodiment 16 in that the dispersant sodium stearate, the fiber powder and the curing agent are mixed and stirred uniformly to prepare slurry, and then the slurry is injected into a mold;
wherein the amount of sodium stearate incorporated in example 18 was 1 g;
the amount of sodium stearate incorporated in example 19 was 3 g;
the amount of sodium stearate incorporated in example 20 was 5 g.
Examples 21 to 22
The difference between the fiber elastic atomizing core and the embodiment 20 is that the forming pressure and the pressure maintaining time are different in the embodiments 21-22, wherein the pressure is slowly increased to 0.1MPa in the embodiment 21, the pressure maintaining time is 2min, the pressure is slowly increased to 10MPa in the embodiment 22, and the drying is directly carried out after the compression forming.
Performance test
Detection method
1. Fibrous elastic atomized cores (specification 10mm × 4mm) were prepared according to the preparation methods of examples 1 to 22, tested for porosity and water absorption according to archimedes' drainage method, and tested for liquid absorption time using the same electronic atomized liquid;
2. preparing a fiber elastic atomizing core into a hollow rod-shaped solid (the specification is 10mm multiplied by 4mm, the inner diameter of the hollow part is 2mm), installing a spiral heating wire (the inner diameter of the spiral heating wire is 1.8mm, the outer diameter of the spiral heating wire is 2mm) in the inner cavity of the fiber elastic atomizing core, attaching the heating wire to the inner wall of the fiber elastic atomizing core to form an atomizing part, and placing the atomizing part in an electronic smoking set;
10 experimenters qualified for sensory testing used the same electronic smoking article to aspirate 20 and 50 times respectively, and the average number of core cloud and oil frying events in each set of tests was recorded.
TABLE 5 porosity, water absorption and wicking time of fibrous elastic atomizing core
TABLE 6 number of occurrences of core pasting and oil frying in fiber elastic atomizing core
Data analysis
In table 5, the porosity, the water absorption rate and the liquid absorption time represent the liquid absorption efficiency of the fiber elastic atomizing core, the larger the porosity is, the higher the water absorption rate is, and the shorter the liquid absorption time is, the better the liquid absorption performance of the fiber elastic atomizing core is;
in table 6, the number of occurrences of the core pasting and oil frying phenomenon indicates the atomization stability of the elastic fiber atomization core, and the smaller the number of occurrences of the core pasting and oil frying phenomenon, the more stable the atomization of the elastic fiber atomization core.
As can be seen by combining examples 1-6 with table 5, as the content of the linter powder increases, the porosity of the fibrous elastic atomized core increases first and then decreases, and the optimal weight ratio of the linter powder to the curing agent is 1:10, which may be due to: when the content of the cotton linter powder is too high, the dispersion effect of the fiber elastic atomization core in the curing agent is poor, and the fiber elastic atomization core is easy to agglomerate into large particles, so that the porosity is reduced. Meanwhile, when the content of the adhesive polyvinyl alcohol in the curing agent is 10 wt%, the porosity is higher, and when the content of the adhesive polyvinyl alcohol is higher than 10 wt%, the porosity is reduced.
It can be seen from the combination of examples 1, 7-12 and Table 5 that the porosity of the fiber elastic atomizing core is greatly affected by the particle size composition of the fiber elastic atomizing core, and when the particle size ranges from 150 μm to 250 μm, the porosity of the fiber elastic atomizing core is high and the liquid absorption effect is good. When the particle size range is higher than 250 μm or lower than 150 μm, the porosity of the fiber elastic atomizing core is lower than 80%. In the same particle size range, the porosity of the fiber elastic atomizing core prepared from the glass fiber powder is slightly higher than that of the fiber elastic atomizing core prepared from the paper shredder powder, but as the glass fiber powder is inorganic fiber, the surface of the fiber elastic atomizing core has fewer functional groups capable of forming hydrogen bonds, and the liquid absorption performance is lower than that of plant fiber.
It can be seen from the combination of examples 17-20 and table 5 that the use of sodium stearate as a dispersant can significantly improve the porosity of the fibrous elastic atomizing core, improve the liquid absorption effect of the fibrous elastic atomizing core, reduce the occurrence of the paste core, and improve the atomizing stability.
As can be seen in connection with examples 20-22 and in connection with table 5, changes in parameters of the forming process have little effect on the porosity and liquid intake properties of the atomized cotton core of the present application.
As can be seen by combining examples 1-20 and Table 6, the fiber elastic atomizing core has better atomizing stability, and the phenomena of core pasting and oil frying do not occur after 20 times of pumping, while the phenomena of core pasting and oil frying do not exceed 3 times after 50 times of pumping, which proves that the fiber elastic atomizing core of the application has good atomizing stability.
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 (10)
1. The elastic fiber atomizing core is characterized by comprising the following raw materials in parts by weight: 5-20 parts of fiber powder and 100-500 parts of curing agent, wherein the fiber powder and the curing agent are pressed and formed to generate the fiber elastic atomization core.
2. A fibrous elastic atomizing core according to claim 1, wherein: the granularity of the fiber powder is 75 mu m-10 mm.
3. A fibrous elastic atomizing core according to claim 2, wherein: the particle size of the fiber powder is 150-250 μm.
4. A fibrous elastic atomizing core according to claim 1, wherein: the fiber powder is inorganic fiber powder and/or plant fiber powder.
5. A fibrous elastic atomizing core according to claim 4, characterized in that: the fiber powder is prepared by compounding cotton linter powder and glass fiber powder according to the weight ratio of 9: 1.
6. A fibrous elastic atomizing core according to claim 1, wherein: the curing agent consists of a binder and a solvent, and the content of the binder in the curing agent is 1-15 wt%.
7. A fibrous elastic atomizing core according to claim 6, wherein: the binder is prepared by compounding polyvinyl alcohol and isobutylene maleic anhydride copolymer or starch and sodium carboxymethylcellulose.
8. A fibrous elastic atomizing core according to claim 1, wherein: the raw materials also comprise a dispersing agent, and the weight part of the dispersing agent is 1-5 parts.
9. A fibrous elastic atomizing core according to claim 8, wherein: the dispersing agent is selected from one or more of sodium citrate, stearic acid, sodium stearate, hydroxyethyl ethylenediamine, polyacrylamide and hydroxymethyl cellulose.
10. A process for the preparation of a fibrous elastic atomizing core according to any one of claims 1 to 9, characterized in that: the method comprises the following steps: weighing fiber powder and a curing agent according to the formula ratio, preparing into slurry, filling the slurry into a mold, maintaining the pressure for 0-2 min under the molding pressure of 0.1-10 MPa, performing compression molding, drying at 70-300 ℃, and demolding to obtain the fiber elastic atomization core.
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