CN117144507A - Composite spinning material, preparation method thereof, oil guide medium for electronic cigarette and electronic cigarette - Google Patents
Composite spinning material, preparation method thereof, oil guide medium for electronic cigarette and electronic cigarette Download PDFInfo
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- CN117144507A CN117144507A CN202310919050.9A CN202310919050A CN117144507A CN 117144507 A CN117144507 A CN 117144507A CN 202310919050 A CN202310919050 A CN 202310919050A CN 117144507 A CN117144507 A CN 117144507A
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- 238000009987 spinning Methods 0.000 title claims abstract description 103
- 239000002131 composite material Substances 0.000 title claims abstract description 77
- 239000000463 material Substances 0.000 title claims abstract description 65
- 239000003571 electronic cigarette Substances 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title claims description 12
- 239000000835 fiber Substances 0.000 claims abstract description 126
- 239000000243 solution Substances 0.000 claims description 57
- 239000002245 particle Substances 0.000 claims description 33
- 229920000742 Cotton Polymers 0.000 claims description 29
- 239000002002 slurry Substances 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 229920002678 cellulose Polymers 0.000 claims description 19
- 239000001913 cellulose Substances 0.000 claims description 19
- 238000006243 chemical reaction Methods 0.000 claims description 18
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 238000002156 mixing Methods 0.000 claims description 13
- 230000008569 process Effects 0.000 claims description 13
- 239000002904 solvent Substances 0.000 claims description 12
- 238000005406 washing Methods 0.000 claims description 11
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 9
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 9
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 8
- 108010059892 Cellulase Proteins 0.000 claims description 7
- 108090000790 Enzymes Proteins 0.000 claims description 7
- 102000004190 Enzymes Human genes 0.000 claims description 7
- 239000007864 aqueous solution Substances 0.000 claims description 7
- 229940106157 cellulase Drugs 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 7
- 229940088598 enzyme Drugs 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 7
- 239000011268 mixed slurry Substances 0.000 claims description 7
- 238000003892 spreading Methods 0.000 claims description 7
- 230000007480 spreading Effects 0.000 claims description 7
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims description 6
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- 150000007522 mineralic acids Chemical class 0.000 claims description 5
- 244000025254 Cannabis sativa Species 0.000 claims description 4
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 claims description 4
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 claims description 4
- 235000014676 Phragmites communis Nutrition 0.000 claims description 4
- 235000009120 camo Nutrition 0.000 claims description 4
- 235000005607 chanvre indien Nutrition 0.000 claims description 4
- 239000011487 hemp Substances 0.000 claims description 4
- 241000609240 Ambelania acida Species 0.000 claims description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 3
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 3
- 244000082204 Phyllostachys viridis Species 0.000 claims description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 3
- 229920002522 Wood fibre Polymers 0.000 claims description 3
- 239000010905 bagasse Substances 0.000 claims description 3
- 239000011425 bamboo Substances 0.000 claims description 3
- 238000006047 enzymatic hydrolysis reaction Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 230000004580 weight loss Effects 0.000 claims description 3
- 239000002025 wood fiber Substances 0.000 claims description 3
- 238000005979 thermal decomposition reaction Methods 0.000 abstract description 7
- 230000003111 delayed effect Effects 0.000 abstract description 6
- 230000003313 weakening effect Effects 0.000 abstract description 6
- 239000003921 oil Substances 0.000 description 21
- 239000002657 fibrous material Substances 0.000 description 16
- 239000004753 textile Substances 0.000 description 15
- 239000007788 liquid Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 239000012535 impurity Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- LFTLOKWAGJYHHR-UHFFFAOYSA-N N-methylmorpholine N-oxide Chemical compound CN1(=O)CCOCC1 LFTLOKWAGJYHHR-UHFFFAOYSA-N 0.000 description 4
- 230000000670 limiting effect Effects 0.000 description 4
- 238000010298 pulverizing process Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 239000013557 residual solvent Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 238000000889 atomisation Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 239000012670 alkaline solution Substances 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 2
- 238000009960 carding Methods 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000001000 micrograph Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 235000011624 Agave sisalana Nutrition 0.000 description 1
- 244000198134 Agave sisalana Species 0.000 description 1
- 108010084185 Cellulases Proteins 0.000 description 1
- 102000005575 Cellulases Human genes 0.000 description 1
- 244000061176 Nicotiana tabacum Species 0.000 description 1
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000007071 enzymatic hydrolysis Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000010409 ironing Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000002411 thermogravimetry Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/02—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from cellulose, cellulose derivatives, or proteins
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
- A24F47/00—Smokers' requisites not otherwise provided for
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/18—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from other substances
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
According to the application, the first fiber and the second fiber are selected, and on the basis of reasonably proportioning the first fiber and the second fiber, the prepared composite spinning material has higher thermal weight temperature and thermal decomposition temperature, so that the composite spinning material has higher heat-resistant temperature; when the composite spinning material is applied to the heat conducting medium of the electronic cigarette, the problem of taste attenuation of the electronic cigarette caused by the weakening of the oil conducting capacity can be delayed or avoided.
Description
Technical Field
The application relates to the technical field of electronic cigarettes, in particular to a composite spinning material and a preparation method thereof, an oil guide medium for an electronic cigarette and the electronic cigarette.
Background
The electronic cigarette has the advantages of health, environmental protection, safety and the like, and is gradually becoming a favored cigarette substitute for consumers. The atomizer is one of main component parts in the electronic cigarette and is used for heating and atomizing tobacco tar to generate smoke so as to achieve the effect of simulating the cigarette.
The atomizer comprises an atomization core and a liquid storage cavity, wherein the atomization core comprises a heating wire, an oil guiding medium and an atomization bracket. Cotton fibers are generally used as an oil guiding medium because cotton fiber bundles can conduct absorbed lubricating oil or lubricant between fibers and realize an oil guiding function by capillary action. However, the temperature of the heating wire is up to 250 ℃ during the pumping operation, and the cotton fiber closely attached to the heating wire is in a continuous high-temperature baking state. However, the cotton fiber has low heat-resistant temperature, the capillary action is reduced after being heated, the oil guiding capability is weakened, and the taste is further attenuated.
Disclosure of Invention
Based on the above, the application provides a composite spinning material, a preparation method thereof, an oil guide medium for electronic cigarettes and the electronic cigarettes. The composite spinning material provided by the application has higher thermal weight temperature and thermal decomposition temperature, so that the heat-resistant temperature is high; when the heat conducting medium is used as a heat conducting medium of the electronic cigarette, the problem of taste attenuation of the electronic cigarette caused by the weakening of the oil conducting capacity can be delayed or avoided.
In a first aspect of the present application, there is provided a composite spinning material, wherein the preparation raw materials of the composite spinning material include the following components in mass ratio: (0.01 to 0.05) first and second fibers;
the first fibers comprise one or more of cotton fibers, wood fibers, bamboo fibers, reed fibers, hemp stalk core fibers and bagasse fibers;
the second fibers comprise fibrilia.
In one embodiment, the composite spun material has one or more of the following features:
(1) The fiber diameter of the composite spinning material is 10-15 mu m;
(2) The thermal weight temperature of the composite spinning material is more than or equal to 295 ℃;
(3) The thermal weight loss temperature of the composite spinning material is more than or equal to 333 ℃.
In a second aspect of the present application, there is provided a method for preparing a composite spinning material according to any one of the embodiments of the first aspect of the present application, including the steps of:
taking the first fiber and the second fiber according to the mass ratio;
immersing the first fibers and the second fibers in an impregnating solution to perform enzymolysis reaction to prepare pulp;
adding an alkaline aqueous solution into the pulp to terminate the enzymolysis reaction, removing part of water, and crushing to prepare pulp particles;
adding an organic spinning solvent into the slurry particles, mixing, and removing water in the slurry particles to prepare an organic spinning solution;
and filtering the organic spinning solution, spinning and solidifying to prepare the composite spinning material.
In one embodiment, the method of preparation has one or more of the following features:
(1) The impregnating solution comprises inorganic acid and biological enzyme; wherein the inorganic acid comprises one or more of sulfuric acid, hydrochloric acid and acetic acid; the biological enzyme comprises cellulase;
(2) The alkaline aqueous solution comprises one or more of an aqueous sodium hydroxide solution and an aqueous potassium hydroxide solution;
(3) The organic spinning solvent comprises one or more of methanol, ethanol, acetone, dimethyl sulfoxide, chloroform and N-methyl morphinan-4-oxide.
In one embodiment, the process parameters of the enzymatic hydrolysis reaction include: the enzymolysis temperature is 60-90 ℃.
In one embodiment, the step of removing water from the slurry comprises:
spreading the mixed slurry comprising the slurry particles and the organic spinning solvent into a thin layer, and removing water in the slurry particles under the condition that the vacuum degree is less than or equal to-98 KPa to prepare the organic spinning solution;
wherein the mass concentration of cellulose in the organic spinning solution is 10% -30%.
In one embodiment, the process parameters of the spinning include: the spinning speed is 500 m/min-1000 m/min.
In one embodiment, after the curing step, the method further comprises:
washing and cutting the solidified fiber filaments into short fibers;
oiling and drying the short fibers.
In a third aspect, the application provides an oil guiding medium for electronic cigarettes, which comprises the composite spinning material according to any one of the embodiments of the first aspect of the application.
According to a fourth aspect of the application, an electronic cigarette is provided, which comprises the oil guide medium for the electronic cigarette according to the third aspect of the application.
According to the composite spinning material provided by the application, the first fiber and the second fiber are selected, so that the composite spinning material has higher thermal weight temperature and thermal decomposition temperature, and therefore, the heat-resistant temperature is high; when the composite spinning material is applied to the heat conducting medium of the electronic cigarette, the problem of taste attenuation of the electronic cigarette caused by the weakening of the oil conducting capacity can be delayed or avoided.
Drawings
FIG. 1 is a scanning electron microscope image of a composite fiber material prepared in example 1 of the present application;
FIG. 2 is a thermogravimetric view of the composite fiber material prepared in example 1 of the present application.
Detailed Description
The following describes the composite spinning material and the preparation method thereof, the oil guiding medium for the electronic cigarette and the electronic cigarette in a further complete and clear way by combining with the specific embodiments. The present application may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
When a range of values is disclosed herein, the range is considered to be continuous and includes both the minimum and maximum values for the range, as well as each value between such minimum and maximum values. Further, when a range refers to an integer, each integer between the minimum and maximum values of the range is included. Further, when multiple range description features or characteristics are provided, the ranges may be combined. In other words, unless otherwise indicated, all ranges disclosed herein are to be understood to include any and all subranges subsumed therein.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise indicated or contradicted, terms or phrases used herein have the following meanings:
in the present application, the terms "plurality", "plural", "multiple", and the like are used in terms of the number of the terms "plurality", "multiple", and the like, and are not particularly limited, but are greater than 2 or equal to 2 in number. For example, "one or more" means one kind or two or more kinds.
In the present application, the terms "first", "second", "third", "fourth", etc. are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or quantity, nor as implying an importance or quantity of a technical feature indicated. Moreover, the terms "first," "second," "third," "fourth," and the like are used for non-exhaustive list description purposes only, and are not to be construed as limiting the number of closed forms.
In the application, the technical characteristics described in an open mode comprise a closed technical scheme composed of the listed characteristics and also comprise an open technical scheme comprising the listed characteristics.
In the present application, references to "preferred", "better", "preferred" are merely to describe embodiments or examples of better results, and it should be understood that they do not limit the scope of the present application.
In the present application, references to "further", "still further", "particularly" and the like are used for descriptive purposes and indicate that the application is not to be interpreted as limiting the scope of the application.
In the present application, references to "optional", "optional" refer to the presence or absence of the "optional" and "optional", i.e., to include either of the two parallel schemes "with" or "without". If multiple "alternatives" occur in a technical solution, if no particular description exists and there is no contradiction or mutual constraint, then each "alternative" is independent.
In the present application, a numerical range (i.e., a numerical range) is referred to, and optional numerical distributions are considered to be continuous within the numerical range and include two numerical endpoints (i.e., a minimum value and a maximum value) of the numerical range and each numerical value between the two numerical endpoints unless otherwise specified. Where a numerical range merely refers to integers within the numerical range, including both end integers of the numerical range, and each integer between the two ends, unless otherwise indicated herein, is equivalent to the direct recitation of each integer, such as t being an integer comprising 1 to 10, and t being any integer comprising a group of integers consisting of 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10. Further, when a plurality of range description features or characteristics are provided, these ranges may be combined. In other words, unless otherwise indicated, the ranges disclosed herein are to be understood to include any and all subranges subsumed therein.
The temperature parameter in the present application is not particularly limited, and may be a constant temperature treatment or may vary within a predetermined temperature range. It should be appreciated that the constant temperature process described allows the temperature to fluctuate within the accuracy of the instrument control. Allows for fluctuations within a range such as + -5 ℃, + -4 ℃, + -3 ℃, + -2 ℃, + -1 ℃.
In the present application, the term "percent concentration" refers to the final concentration unless otherwise specified. The final concentration refers to the ratio of the additive component in the system after the component is added.
As the existing cotton fiber has low heat-resistant temperature, the capillary action is reduced after being heated, the oil guiding capability is weakened in the middle and later stages, and the taste is further attenuated.
Based on the above, the first aspect of the application provides a composite spinning material, wherein the preparation raw materials of the composite spinning material comprise the following components in percentage by mass: (0.01 to 0.05) first and second fibers;
the first fibers comprise one or more of cotton fibers, wood fibers, bamboo fibers, reed fibers, hemp stalk core fibers and bagasse fibers; the second fibers comprise fibrilia.
The first fiber has good reproducibility and is environment-friendly and easily available; the second fiber refers to a generic term for fibers obtained from various hemp plants. According to the application, the first fiber and the second fiber are selected, and on the basis of reasonably proportioning the first fiber and the second fiber, the prepared composite spinning material has higher thermal weight temperature and thermal decomposition temperature, so that the composite spinning material has higher heat-resistant temperature; when the composite spinning material is applied to the heat conducting medium of the electronic cigarette, the problem of taste attenuation of the electronic cigarette caused by the weakening of the oil conducting capacity can be delayed or avoided.
It will be appreciated that the mass ratio of the first and second fibers in the present application may comprise 1: (0.01-0.05). Specifically, the mass ratio of the first fiber to the second fiber includes, but is not limited to, 1:0.01, 1:0.02, 1:0.03, 1:0.04 or 1:0.05.
in order to ensure the capillary action of the composite spinning material as an oil guiding medium. Preferably, the first fibers are cotton fibers.
The fiber diameter plays an important role in the interfacial properties of the composite spinning material, so as to ensure the contact area of the composite spinning material and a liquid medium and the liquid guiding transmission efficiency. In one example, the composite spun material has a diameter of 10 μm to 15 μm. It will be appreciated that the diameter of the composite spun material from 10 μm to 15 μm may comprise any value between 10 μm and 15 μm. Specifically, the diameter of the composite spun material includes, but is not limited to, 10 μm, 11 μm, 11.5 μm, 12 μm, 12.1 μm, 12.2 μm, 12.3 μm, 12.35 μm, 12.39 μm, 12.4 μm, 12.5 μm, 13 μm, 14 μm or 15 μm.
In one example, the thermal weight temperature of the composite spun material is greater than or equal to 295 ℃. The temperature of the heating wire in the electronic cigarette in the sucking operation is 250 ℃, and the thermal weight temperature of the composite spinning material provided by the application is higher than the operating temperature of 45 ℃, so that the composite spinning material has excellent heat resistance, and when the composite spinning material is used as a heat conducting medium of the electronic cigarette, the problem of taste attenuation of the electronic cigarette caused by weakening of oil conducting capacity can be delayed or avoided.
In one example, the thermal weight loss temperature of the composite spun material is greater than or equal to 333 ℃.
In a second aspect of the present application, there is provided a method for preparing a composite spinning material according to any one of the first aspect of the present application, comprising the steps of:
taking the first fiber and the second fiber according to the mass ratio;
immersing the first fiber and the second fiber in an impregnating solution for enzymolysis reaction to prepare pulp;
adding an alkaline aqueous solution into pulp to terminate enzymolysis reaction, removing part of water, and crushing to prepare pulp particles;
adding an organic spinning solvent into the slurry particles, mixing, and removing water in the slurry particles to prepare an organic spinning solution;
and filtering the organic spinning solution, spinning and solidifying to prepare the composite spinning material.
In order to avoid metal impurities in the first fiber and the second fiber, damage or potential safety hazard is generated to the subsequent process. In one example, before the step of immersing the first fiber and the second fiber in the impregnating solution for enzymolysis, the method further comprises: and performing metal detection on the first fiber and the second fiber.
In one example, the impregnating solution includes a mineral acid and a biological enzyme. In the application, the purpose of including inorganic acid in the impregnating solution is to provide an acidic environment for the enzymolysis of the first fiber and the second fiber, and the acid is increased until the pH value of the impregnating solution is 4.5-7.0. Wherein the acid comprises one or more of sulfuric acid, hydrochloric acid and acetic acid.
In addition, biological enzymes include cellulases. The soaking liquid comprising the cellulose is selected, and the enzymolysis temperature is set to 60-90 ℃, so that the cellulose is beneficial to breaking hydrogen bonds in cellulose molecules, the enzymolysis speed can be improved, and the degradation efficiency of the first fiber and the second fiber can be improved. It will be appreciated that the enzymatic hydrolysis temperature includes, but is not limited to 60 ℃, 65 ℃, 70 ℃, 75 ℃, 80 ℃, 85 ℃, or 90 ℃.
In one example, the mass ratio of the sum of the masses of the first fiber and the second fiber to the cellulase is 1: (0.01-0.1). It will be appreciated that the mass sum of the first and second fibers to cellulase may comprise 1: (0.01-0.1). Specifically, the mass sum of the first fiber and the second fiber to the cellulase comprises, but is not limited to, 1:0.01, 1:0.02, 1:0.05, 1:0.08, 1:0.09 or 1:0.1.
in one example, the aqueous alkaline solution includes one or more of an aqueous sodium hydroxide solution and an aqueous potassium hydroxide solution. In the application, alkali liquor is added to the reaction kettle to ensure that the pH value is more than 8 in order to stop the enzymolysis reaction. The alkaline solution can neutralize the action of enzyme, effectively stop enzymolysis reaction and stabilize the chemical characteristics of paper pulp.
In one example, the organic spin solvent includes one or more of methanol, ethanol, acetone, dimethyl sulfoxide, chloroform, and N-methylmorpholine-4-oxide (NMMO).
Because of interactions between cellulose molecular chains and between water in their micropores and pores and cellulose, preliminary water removal cannot remove all the water, and further dehydration is required to further remove the water of cellulose.
In one example, the step of removing the water of the slurry includes: spreading the mixed slurry comprising slurry particles and an organic spinning solvent into a thin layer, and removing water of the slurry particles under the condition that the vacuum degree is less than or equal to-98 KPa to prepare the organic spinning solution;
wherein the mass concentration of cellulose in the organic spinning solution is 10% -30%. In the dehydration process, the water content is reduced, and accordingly, the content of the organic spinning solvent is increased, so that the organic spinning solution can be prepared.
In one example, the process parameters of spinning include: the spinning speed is 500 m/min-1000 m/min.
In one example, after the curing step, further comprising:
washing and cutting the solidified fiber filaments into short fibers;
oiling and drying the short fibers.
In one specific example, the method for preparing the composite spinning material comprises the following steps:
s10, selecting a mass ratio of 1: (0.01-0.05), immersing the first fiber and the second fiber in an impregnating solution which has a pH of 4.5-7.0 and contains cellulase after metal detection, so that the mass ratio of the sum of the mass of the first fiber and the mass of the second fiber to the mass of the cellulase is 1: (0.01-0.1);
s20, carrying out enzymolysis reaction on the first fiber and the second fiber in the impregnating solution at the temperature of 60-90 ℃ for 1-10 h to prepare pulp;
s30, adding alkali liquor into the pulp prepared in the step S20, regulating the pH value to be more than 8, stopping enzymolysis reaction, primarily removing liquid through a squeezer after stirring, and sending the pulp into a pulverizer for pulverizing to prepare pulp particles with the particle size of 8-300 mu m;
s40, mixing the slurry particles prepared in the step S30 with an organic spinning solvent according to a weight ratio of 1: mixing the components in the proportion of (4-10) to prepare slurry; spreading the mixed slurry comprising slurry particles and an organic spinning solvent into a thin layer, and removing water of the slurry particles under the condition that the vacuum degree is less than or equal to-98 KPa to prepare the organic spinning solution; wherein the mass concentration of cellulose in the organic spinning solution is 10% -30%;
s50, filtering the organic spinning solution prepared in the step S40, removing solid impurities, feeding the solution into a spinning assembly, extruding the solution through a spinneret plate, wherein the spinning speed is 500-1000 m/min, the number of holes of the spinneret plate is 1000-2000 holes, and preparing fiber filaments with the diameter of 10-15 mu m after solidification;
s60, washing the fiber yarn prepared in the step S50 to ensure that the residual solvent content in the fiber yarn is less than 1.5%, cutting the fiber yarn into short fibers after washing, and preparing the composite fiber material after oiling and drying.
In one example, in step S60, the length of the cut staple fibers is 3mm to 10mm.
To enable the composite spun material to meet the actual performance requirements, in one example, after the step of S60, further comprises:
s70, preparing the textile product by carrying out opening mixing, carding, cross-linking lapping, drafting, prewetting, positive and negative hydroentanglement, after-finishing, drying and winding forming on the composite fiber material prepared in the step S60. It is understood that the textile articles herein include, but are not limited to, oil-guiding media for electronic cigarettes.
In step S70, the composite fiber materials are subjected to opening mixing, so that entanglement and interlacing between the composite fiber materials can be untwisted, and an effect of uniform fiber dispersion can be achieved. This facilitates the smooth proceeding of the subsequent process and improves the operability and processability of the fiber. The composite fiber material can be further processed through the carding process to remove impurities, coarse fibers, short fibers and other undesirable fiber materials; thereby improving the fiber parallelism and uniformity of the fibers and providing better fiber quality for subsequent processing steps.
In the step of cross-linking and lapping, the fibers are crossly laminated to form a basic structure of the textile, which is helpful for improving the strength, stability and uniformity of the textile, so that the textile can bear tensile force and deformation and is not easy to lose shape. Through the drawing process, the crosslinked and lapped textile fabric is enabled to extend the length of the fiber under a certain drawing force, and the arrangement and structure of the fiber are changed, so that the strength, elasticity and softness of the textile fabric can be improved.
Before the forward and reverse hydroentanglement, the pre-wetting treatment is carried out, and the textile is soaked in a proper liquid medium, so that the fibers are fully hygroscopic, the adhesion between the fibers is increased, and the next hydroentanglement processing is facilitated. Through the water jet process, the impact force of high-speed water jet and penetrability of water flow are utilized to cause the fibers to be hooked and combined with each other under the action of the water flow. Hydroentanglement can increase the compactness, strength and uniformity of the textile.
The textile after the hydro-entangled processing is subjected to post-treatment processes such as ironing, trimming, printing and dyeing, so that the texture, glossiness and appearance effect of the textile are improved, and the requirements of different requirements and purposes are met. Further, the processed textile is dried to remove redundant moisture, so that the stability and the dryness of the textile are improved. Finally, the textile is coiled and formed, so that the textile is convenient to transport, store and use.
According to a third aspect of the application, an oil guide medium for electronic cigarettes is provided, and the oil guide medium comprises the composite spinning material according to any one of the first aspect of the application.
According to the application, the first fiber and the second fiber are selected, and on the basis of reasonably proportioning the first fiber and the second fiber, the prepared composite spinning material has higher thermal weight temperature and thermal decomposition temperature, so that the composite spinning material has higher heat-resistant temperature; when the composite spinning material is applied to the heat conducting medium of the electronic cigarette, the problem of taste attenuation of the electronic cigarette caused by the weakening of the oil conducting capacity can be delayed or avoided.
According to a fourth aspect of the application, an electronic cigarette is provided, which comprises the oil guide medium for the electronic cigarette according to the third aspect of the application.
The following examples are provided to further illustrate the present application, but the present application is not limited to the following examples. Unless otherwise indicated, all the starting materials used in the examples were commercially available products.
Example 1
Example 1 provides a composite spinning material and a preparation method thereof, and the specific steps are as follows:
(1) The mass ratio is selected as 1:0.05, immersing the cotton fiber and the fibrilia in an impregnating solution which has the pH value of 5 and comprises cellulose after metal detection, so that the mass sum of the cotton fiber and the fibrilia and the mass ratio of the cellulose are 1:0.1;
(2) At 90 ℃, carrying out enzymolysis reaction on cotton fibers and fibrilia in an impregnating solution, and preparing pulp after 3 hours of enzymolysis;
(3) Adding sodium hydroxide aqueous solution into the pulp prepared in the step (2), regulating the pH to 9, stopping enzymolysis reaction, removing liquid through a squeezer after stirring, and sending into a pulverizer for pulverizing to prepare pulp particles with the particle size of 50-200 mu m;
(4) Mixing the slurry particles prepared in the step (3) with N-methylmorpholine-4-oxide (NMMO) according to the following formula 1:4, mixing the materials in a weight ratio to prepare slurry; spreading the mixed slurry comprising slurry particles and N-methyl morphinan-4-oxide (NMMO) into a thin layer, and dehydrating under the condition of vacuum degree of-98 KPa to prepare an organic spinning solution; wherein the mass concentration of cellulose in the organic spinning solution is 30%;
(5) Filtering the organic spinning solution prepared in the step (4), removing solid impurities, feeding the solution into a spinning assembly, extruding the solution through a spinneret plate, wherein the spinning speed is 800m/min, the number of holes of the spinneret plate is 2000 holes, and preparing fiber filaments with the diameter of 12.38 mu m after solidification;
(6) Washing the fiber yarn prepared in the step (5) to ensure that the residual solvent content in the fiber yarn is less than 1.5%, cutting the fiber yarn into short fibers after washing, and preparing the composite fiber material after oiling and drying.
A scanning electron microscope image of the composite fiber material prepared in example 1 is shown in FIG. 1. As can be seen from fig. 1, the composite fiber prepared in example 1 of the present application has a smooth surface and is round; the average diameter of the cross section was 12.38. Mu.m.
Example 2
In one specific example, the preparation method of the composite spinning material comprises the following steps:
(1) The mass ratio is selected as 1:0.01, immersing the cotton fiber and the fibrilia in an impregnating solution which has the pH value of 6 and comprises cellulose after metal detection, so that the mass sum of the cotton fiber and the fibrilia and the mass ratio of the cellulose are 1:0.05;
(2) At 70 ℃, carrying out enzymolysis reaction on cotton fibers and fibrilia in the impregnating solution, and preparing pulp after 2 hours of enzymolysis;
(3) Adding alkali liquor into the pulp prepared in the step (2), regulating the pH to 8.5, stopping the enzymolysis reaction, removing liquid through a squeezer after stirring, and sending into a pulverizer for pulverizing to prepare pulp particles with the particle size of 50-200 mu m;
(4) Mixing the slurry particles prepared in the step (3) with N-methylmorpholine-4-oxide (NMMO) according to the following formula 1:4, mixing the materials in a weight ratio to prepare slurry; spreading the mixed slurry comprising slurry particles and N-methyl morphinan-4-oxide (NMMO) into a thin layer, and dehydrating under the condition of vacuum degree of-100 KPa to prepare an organic spinning solution; wherein the mass concentration of cellulose in the organic spinning solution is 20%;
(5) Filtering the spinning solution prepared in the step (4), removing solid impurities, feeding the filtered spinning solution into a spinning assembly, extruding the filtered spinning solution through a spinneret plate, wherein the spinning speed is 500m/min, the number of holes of the spinneret plate is 1000 holes, and preparing fiber filaments with the diameter of 10 mu m after solidification;
(6) Washing the fiber yarn prepared in the step (5) to ensure that the residual solvent content in the fiber yarn is less than 1.5%, cutting the fiber yarn into short fibers after washing, and preparing the composite fiber material after oiling and drying.
Example 3
Example 3 is substantially the same as example 1, the main difference being that: the mass ratio of cotton fiber to fibrilia in example 3 was 1:0.025. the method comprises the following specific steps:
(1) The mass ratio is selected as 1:0.025 cotton fiber and fibrilia, after metal detection, immersing the cotton fiber and fibrilia in an impregnating solution which has a pH value of 5 and comprises cellulose, so that the mass ratio of the mass sum of the cotton fiber and the fibrilia to the mass ratio of the cellulose is 1:0.08;
(2) At 90 ℃, carrying out enzymolysis reaction on cotton fibers and fibrilia in an impregnating solution, and preparing pulp after 2.5 hours of enzymolysis reaction;
(3) Adding sodium hydroxide aqueous solution into the pulp prepared in the step (2), regulating the pH to 9, stopping enzymolysis reaction, removing liquid through a squeezer after stirring, and sending into a pulverizer for pulverizing to prepare pulp particles with the particle size of 50-200 mu m;
(4) Mixing the slurry particles prepared in the step (3) with N-methylmorpholine-4-oxide (NMMO) according to the following formula 1:4, mixing the materials in a weight ratio to prepare slurry; spreading the mixed slurry comprising slurry particles and N-methyl morphinan-4-oxide (NMMO) into a thin layer, and dehydrating under the condition of vacuum degree of-98 KPa to prepare an organic spinning solution; wherein the mass concentration of cellulose in the organic spinning solution is 25%;
(5) Filtering the organic spinning solution prepared in the step (4), removing solid impurities, feeding the solution into a spinning assembly, extruding the solution through a spinneret plate, wherein the spinning speed is 1000m/min, the number of holes of the spinneret plate is 2000 holes, and preparing fiber filaments with the diameter of 15 mu m after solidification;
(6) Washing the fiber yarn prepared in the step (5) to ensure that the residual solvent content in the fiber yarn is less than 1.5%, cutting the fiber yarn into short fibers after washing, and preparing the composite fiber material after oiling and drying.
Example 4
Example 4 is substantially the same as example 1, the main difference being that: the cotton fiber is replaced by reed fiber.
Example 5
Example 5 is substantially identical to example 1, the main difference being that: the cotton fiber is replaced by hemp stalk core fiber.
Example 6
Example 6 is substantially the same as example 1, the main difference being that: the spinning speed was 1000m/min and the diameter of the fiber yarn prepared was 15. Mu.m.
Comparative example 1
Cotton fiber was used as comparative example 1.
Comparative example 2
Comparative example 2 is substantially the same as example 1, with the main difference that: the mass ratio of the cotton fiber to the fibrilia is 1:0.005.
the fiber materials of the examples and comparative examples of the present application were subjected to thermogravimetric experiments in a thermogravimetric instrument, and the corresponding test results are shown in table 1 and fig. 1.
TABLE 1
| Samples | T 15％ (℃) | T max (℃) |
| Example 1 | 302.5 | 339 |
| Example 2 | 300.3 | 335 |
| Example 3 | 301.7 | 337 |
| Example 4 | 297.4 | 333.6 |
| Example 5 | 295.5 | 333.0 |
| Example 6 | 299.8 | 337.8 |
| Comparative example 1 | 271.2 | 330.4 |
| Comparative example 2 | 272.1 | 330.9 |
As is clear from Table 1, the thermal gravimetric temperature of the cotton fiber in comparative example 1 was 271.25 ℃and the maximum thermal decomposition temperature was 330 ℃. The highest temperature of the heating wire of the electronic cigarette is 250 ℃ in the pumping operation, and the thermal weight temperature of cotton fibers is similar to the working temperature, so that the oil guiding operation of the electronic cigarette is affected.
The thermal weight temperature of the composite fiber materials prepared in the embodiments 1 to 5 is higher than the thermal weight temperature of the cotton fiber by 24 ℃, wherein the thermal weight temperature of the embodiment 1 is 302.5 ℃ and higher than the cotton fiber by 31 ℃, the temperature is higher than the working temperature of a heating wire, and the highest thermal decomposition temperature of the composite fiber materials prepared in the embodiment 1 is 9 ℃ higher than the cotton fiber, so that the composite fiber materials provided in the embodiment have excellent heat resistance.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples merely represent a few embodiments of the present application, which facilitate a specific and detailed understanding of the technical solutions of the present application, but are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. It should be understood that, based on the technical solutions provided by the present application, those skilled in the art may obtain technical solutions through logical analysis, reasoning or limited experiments, which are all within the scope of protection of the appended claims. The scope of the patent of the application should therefore be determined with reference to the appended claims, which are to be construed as in accordance with the doctrines of claim interpretation.
Claims (10)
1. The composite spinning material is characterized in that the preparation raw materials of the composite spinning material comprise the following components in percentage by mass: (0.01 to 0.05) first and second fibers;
the first fibers comprise one or more of cotton fibers, wood fibers, bamboo fibers, reed fibers, hemp stalk core fibers and bagasse fibers;
the second fibers comprise fibrilia.
2. The composite spun material of claim 1, characterized in that the composite spun material has one or more of the following features:
(1) The fiber diameter of the composite spinning material is 10-15 mu m;
(2) The thermal weight temperature of the composite spinning material is more than or equal to 295 ℃;
(3) The thermal weight loss temperature of the composite spinning material is more than or equal to 333 ℃.
3. A method for preparing a composite spun material according to any one of claims 1 to 2, comprising the steps of:
taking the first fiber and the second fiber according to the mass ratio;
immersing the first fibers and the second fibers in an impregnating solution to perform enzymolysis reaction to prepare pulp;
adding an alkaline aqueous solution into the pulp to terminate the enzymolysis reaction, removing part of water, and crushing to prepare pulp particles;
adding an organic spinning solvent into the slurry particles, mixing, and removing water in the slurry particles to prepare an organic spinning solution;
and filtering the organic spinning solution, spinning and solidifying to prepare the composite spinning material.
4. A method of preparing a composite spun material according to claim 3, characterized in that the preparation method has one or more of the following features:
(1) The impregnating solution comprises inorganic acid and biological enzyme; wherein the inorganic acid comprises one or more of sulfuric acid, hydrochloric acid and acetic acid; the biological enzyme comprises cellulase;
(2) The alkaline aqueous solution comprises one or more of an aqueous sodium hydroxide solution and an aqueous potassium hydroxide solution;
(3) The organic spinning solvent comprises one or more of methanol, ethanol, acetone, dimethyl sulfoxide, chloroform and N-methyl morphinan-4-oxide.
5. A method of preparing a composite spun material according to claim 3, wherein the process parameters of the enzymatic hydrolysis reaction include: the enzymolysis temperature is 60-90 ℃.
6. A method of preparing a composite spun material as defined in claim 3, wherein the step of removing water from the slurry particles comprises:
spreading the mixed slurry comprising the slurry particles and the organic spinning solvent into a thin layer, and removing water in the slurry particles under the condition that the vacuum degree is less than or equal to-98 KPa to prepare the organic spinning solution;
wherein the mass concentration of cellulose in the organic spinning solution is 10% -30%.
7. A method of preparing a composite spun material according to claim 3, wherein the process parameters of spinning include: the spinning speed is 500 m/min-1000 m/min.
8. The method of producing a composite spun material according to any one of claims 3 to 7, characterized by further comprising, after the solidifying step:
washing and cutting the solidified fiber filaments into short fibers;
oiling and drying the short fibers.
9. An oil guiding medium for electronic cigarettes, which is characterized by comprising the composite spinning material according to any one of claims 1-2.
10. An electronic cigarette, comprising the oil guiding medium for electronic cigarettes according to claim 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310919050.9A CN117144507A (en) | 2023-07-25 | 2023-07-25 | Composite spinning material, preparation method thereof, oil guide medium for electronic cigarette and electronic cigarette |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310919050.9A CN117144507A (en) | 2023-07-25 | 2023-07-25 | Composite spinning material, preparation method thereof, oil guide medium for electronic cigarette and electronic cigarette |
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| CN117144507A true CN117144507A (en) | 2023-12-01 |
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