CN110387593A - A kind of preparation method of nanoscale bonding type Fluorescent falsification-preventing fiber - Google Patents
A kind of preparation method of nanoscale bonding type Fluorescent falsification-preventing fiber Download PDFInfo
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F218/00—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 acyloxy radical of a saturated carboxylic acid, of carbonic acid or of a haloformic acid
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
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- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
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- D01D1/02—Preparation of spinning solutions
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- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0015—Electro-spinning characterised by the initial state of the material
- D01D5/003—Electro-spinning characterised by the initial state of the material the material being a polymer solution or dispersion
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- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
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- D01D5/00—Formation of filaments, threads, or the like
- D01D5/0007—Electro-spinning
- D01D5/0061—Electro-spinning characterised by the electro-spinning apparatus
- D01D5/0092—Electro-spinning characterised by the electro-spinning apparatus characterised by the electrical field, e.g. combined with a magnetic fields, using biased or alternating fields
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- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
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- C09K2211/00—Chemical nature of organic luminescent or tenebrescent compounds
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Abstract
The present invention relates to fluorescent type anti-false fiber, specially a kind of preparation method of nanoscale bonding type Fluorescent falsification-preventing fiber.Include the following steps: that (1) prepares rare earth compounding Eu (C8H5F3O2S)2(C12H8N2)(C7H10O3)；(2) bonding type high molecular fluorescent material Eu-PVA is prepared；(3) electrostatic spinning prepares bonding type Fluorescent falsification-preventing fiber.The polymer-based fluorescent nano-fiber of bonding type prepared by the present invention is random random alignment, and the diameter distribution of fiber is relatively uniform, and the surface smoother of fiber, diameter is about 150 ~ 250 nm；Bonding type fluorescent fiber thermal stable temperature can reach 290.2 DEG C；A length of 396 nm of the optimum excitation wave of bonding type fluorescent nano-fiber containing rare earth compounding, best launch wavelength are 612 nm.
Description
Technical field
The present invention relates to fluorescent type anti-false fiber, specially a kind of preparation side of nanoscale bonding type Fluorescent falsification-preventing fiber
Method.
Background technique
In recent years, with economic and science and technology high speed development, forgery and illegal imitation of brand-name products product emerges one after another.In order to cope with forgery technology
The challenge of continuous renewal, it is necessary to continually develop novel anti-counterfeiting technology or safety upgrade is carried out to existing anti-counterfeiting technology.It is glimmering
Light anti-false fiber is widely used in the fields such as banknote, marketable securities, certificate false proof due to hidden good, easy discrimination the advantages of.High score
Subbase rare earth luminescent material is shining because having both the unique luminescent properties of rare earth ion and the excellent machine-shaping property of macromolecule
The fields such as display, the conversion of anti-fake and solar energy are with a wide range of applications.But the rare earth high polymer base fluorescence prepared at present is anti-
Pseudo- fiber is mostly doping type fluorescent fiber, and there are luminescence units to be unevenly distributed, the disadvantages of mutually separating, so that fluorescence falsification preventing material
Fluorescence property, which reduces, even to disappear.And the polymer-based rare-earth luminescent material of bonding type because material internal rear earth ions distribution uniformly,
Still be not in concentration quenching effect and high fluorescence efficiency when rare earth ion content is higher and be concerned.Utilize Static Spinning
Silk technological development Fluorescent falsification-preventing fiber, by the small-size effect of nanofiber, the nanometers such as skin effect level characteristics and bonding type are dilute
The excellent luminescent properties of the polymer-based fluorescent material of soil combine, and can not only open up new application field, even more anti-to fluorescence
The safety upgrade of pseudo- fiber has positive progradation.
Summary of the invention
The purpose of the present invention is being directed to the situation of background technique, with Europium chloride, 1,10- phenanthroline, α-thenoyl three
Fluorine acetone and methacrylic acid prepare rare earth compounding Eu (TTA)2(Phen)MAA；With Eu (TTA)2(Phen) MAA matches for rare earth
Object is closed, vinylacetate is polymer monomer, prepares high-molecular copolymer Eu-PVAc using radical polymerization, then will be high
Molecule copolymer Eu-PVAc carries out alcoholysis, and bonding type Luminescence of Rare Earth Polymer Complex Eu-PVA is prepared；Utilize electrostatic spinning
Bonding type Fluorescent falsification-preventing fiber is prepared in bonding type Luminescence of Rare Earth Polymer Complex Eu-PVA by technology, and it is fine to improve fluorescence falsification preventing
The fluorescence property of dimension.
The present invention is achieved by the following technical scheme: a kind of preparation side of nanoscale bonding type Fluorescent falsification-preventing fiber
Method includes the following steps: that (1) prepares rare earth compounding Eu (C8H5F3O2S)2(C12H8N2)(C7H10O3)
1. weighing and dissolving drug
Weigh respectively Europium chloride, 1,10- phenanthroline, α-thioyl trifluoroacetone, sodium hydroxide be 0.258 g ±
0.001g,0.198 g ± 0.001g,0.444 g ± 0.001g,0.040 g± 0.001g；
Weighed drug is respectively placed in beaker, dehydrated alcohol, which is added, dissolves drug；
2. rare earth compounding Eu (C8H5F3O2S)2(C12H8N2)(C7H10O3) synthesis
The EuCl that will have been dissolved first3Ethanol solution, α-thioyl trifluoroacetone ethanol solution add dropwise respectively
Enter in three-neck flask, adjusting solution ph with the ethanol solution of NaOH is between 4~5；Then it is added dissolved with 1,10- phenanthroline
Ethanol solution and adjust pH value be 6.5~7, finally, be added ± 0.01 mL methacrylic acid of 0.086 mL, can go out
Mixed solution containing red precipitate is stirred to react 4 h in 60 DEG C of constant temperature by now a small amount of pink precipitate, after reaction, is sunk
Shallow lake product is washed with dehydrated alcohol is placed in dry 24 h of 50 DEG C of vacuum ovens, finally obtains pale pink powder Eu
(C8H5F3O2S)2(C12H8N2)(C7H10O3)；
(2) bonding type high molecular fluorescent material Eu-PVA is prepared
1. preparing high-molecular copolymer Eu-PVAc
Weigh rare earth compounding Eu (C8H5F3O2S)2(C12H8N2)(C7H10O3) it is 0.036g ± 0.001g, azodiisobutyronitrile
Initiator 0.0175g ± 0.001g measures ± 0.001 mL of 3.00 mL of n,N-Dimethylformamide and tool test tube is added
In, it is abundant that ultrasonic vibration dissolves complex and initiator；Into tool test tube lead to nitrogen be added after 15 minutes 5.00 mL ±
The Vinyl Acetate Monomer of 0.01 mL continues logical 35 min of nitrogen, seals reaction unit, be put into 65 DEG C of perseverances in thermostat water bath
Temperature 6 h of reaction, to which after reaction, product Eu-PVAc deionized water and dehydrated alcohol are alternately washed and in 55 DEG C of vacuum
Dry 24 hours in baking oven；
2. preparing the polymer-based fluorescent material Eu-PVA of bonding type
The high-molecular copolymer Eu-PVAc for weighing 2.00g ± 0.01g is dissolved in ± 0.001 mL methanol of 30.00 mL,
It is added in three-neck flask, 15 min of heating stirring, the NaOH/ first that NaOH content is 0.08 g ± 0.01g is added at 40 DEG C
In alcoholic solution；After stirring 2 hours, faint yellow product precipitates completely；By freezing ultracentrifugation sediment separate out and it is washed with water
Methanol reaches 7 until the pH value of mixed solution for several times, and product is 12 hours dry in 55 DEG C of vacuum drying ovens, obtains bonding type height
Molecule base fluorescent material Eu-PVA；
(3) electrostatic spinning prepares bonding type Fluorescent falsification-preventing fiber
1. the preparation of spinning solution
The distilled water of 0.4g ± 0.01g bonding type high molecular fluorescent material Eu-PVA and 20 mL are added in beaker, stirring makes
Be uniformly mixed to obtain clear solution, stand 24 h, obtain clarification homogeneous solution, save backup；
2. the preparation of the polymer-based Fluorescent falsification-preventing fiber of bonding type
Electrospinning conditions: spinning voltage of electric field is 24 kV；Receiving distance is 15 cm；Injection speed is 0.2 mL/h；Syringe needle
Outer diameter is 0.82 mm；Spinning solution concentration is 10wt%；
Firstly, spinning solution is poured into the syringe that specification is 20 mL, syringe is fixed on syringe pump, adjusts syringe pump parameter,
It is smooth on receiving screen to spread aluminium foil, and it is connected with cathode, syringe needle part is connected with anode；Check overall wire
Syringe pump and tourelle are opened after road is errorless, when the first drop spinning solution occurs in syringe needle, are opened high voltage power supply, are slowly adjusted to
Required voltage (24 kV) obtains the polymer-based Fluorescent falsification-preventing fiber of bonding type on the receiving screen of ground connection.
Scheme of the present invention has prepared the polymer-based fluorescent material of bonding type by each processing step and parameter
Eu-PVA, and can only be answered using the polymer-based fluorescent material Eu-PVA of bonding type that herein described technique is prepared
The polymer-based Fluorescent falsification-preventing fiber of bonding type is prepared into electrostatic spinning technique；Also above-mentioned electrospinning conditions and step are only used
Suddenly, it is fine that the polymer-based fluorescent material Eu-PVA of bonding type above-mentioned can be processed into the polymer-based fluorescence falsification preventing of bonding type
Dimension.
It further include step (4) to the pattern of the polymer-based Fluorescent falsification-preventing fiber of the bonding type of preparation, ingredient, structure, fluorescence
Performance, thermal stability can be carried out test, analysis and characterization；
Morphology analysis has been carried out to the polymer-based Fluorescent falsification-preventing fiber of bonding type is carried out with scanning electron microscope；
Fluorescence property analysis has been carried out with the polymer-based Fluorescent falsification-preventing fiber of Fluorescence Spectrometer para-linkage type；
It is analyzed with the structure of the polymer-based Fluorescent falsification-preventing fiber of Fourier infrared spectrograph para-linkage type；
It is analyzed with the thermal stability of the polymer-based Fluorescent falsification-preventing fiber of thermogravimetric analyzer para-linkage type；
Conclusion: the polymer-based fluorescent nano-fiber of bonding type is random random alignment, and the diameter distribution of fiber is relatively uniform,
The surface smoother of fiber, diameter are about 150 ~ 250 nm；Bonding type fluorescent fiber thermal stable temperature can reach 290.2
℃；A length of 396 nm of the optimum excitation wave of bonding type fluorescent nano-fiber containing rare earth compounding, best launch wavelength are 612
nm。
Detailed description of the invention
Fig. 1 is Eu-PVAc and complex Eu (TTA)2(Phen) infrared spectrum comparison diagram of MAA, right part of flg are left side
Partial enlargement.
Fig. 2 is the infrared spectrum comparison diagram of Eu-PVA and PVA.
The 1631 of C=C double bond of MAA in complex are belonged in the infrared spectrum curve figure of Eu-PVAc as seen from Figure 1
cm-1It disappears and positioned at 1731 cm-1C=O typical absorption peak occur, show VAc and complex Eu (TTA)2(Phen) MAA
It polymerize successfully.After Eu-PVAc alcoholysis, belong to Eu-PVAc's it can be seen from the infrared spectrum curve of Eu-PVA in Fig. 2
The stretching vibration peak of functional group's C=O ester carbonyl group disappears, typical 3434 strong cm-1When peak be attributed to O-H stretching take out of
It is existing, it was demonstrated that bonding type high molecular fluorescent material Eu-PVA is successfully prepared.
Fig. 3 is the thermogravimetric curve of bonding type Fluorescent falsification-preventing fiber, as can be seen from Figure bonding type fluorescent fiber thermal stable temperature
It can reach 290.2 DEG C.
Fig. 4 is the scanning figure of bonding type Fluorescent falsification-preventing fiber, it can be observed that the polymer-based fluorescent nano-fiber of bonding type
It is random random alignment, the diameter of fiber is distributed relatively uniform, the surface smoother of fiber, and diameter is about 150 ~
250 nm。
Fig. 5 is the fluorescence spectra of bonding type Fluorescent falsification-preventing fiber.A length of 396 nm of optimum excitation wave, best launch wavelength
For 612 nm, belong to Eu3+Characteristic emission peak.
Specific embodiment
The chemical substance that the present invention uses are as follows:
It is as follows that a combination thereof prepares dosage: with gram, milliliter, millimeter, centimetre3For measurement unit
Europium chloride: EuCl3 0.258 g ± 0.001g
1,10- phenanthroline (Phen): C12H8N2 0.198 g ± 0.001g
α-thioyl trifluoroacetone (TTA): C8H5F3O2S 0.444 g ± 0.001g
Methacrylic acid (MAA): C4H6O2 0.086 mL ± 0.01 mL
Dehydrated alcohol: C2H6O 200 mL ± 10 mL
Azodiisobutyronitrile (AIBN): C8H12N4 0.0175g ± 0.001g
Anhydrous methanol: CH3OH 200 mL ± 10 mL
Vinylacetate (VAc): C4H6O2 5.00 mL ± 0.01 mL
N,N-dimethylformamide (DMF): C3H7NO 3.00 mL ± 0.01 mL
Sodium hydroxide: ± 0.001 g of 0.120 g of NaOH
Deionized water: H2O 1000 mL ± 10 mL
Nitrogen: N2 800000 cm3 ± 100 cm3
The preparation method is as follows:
(1) rare earth compounding Eu (TTA) is prepared2(Phen)MAA
1. weighing and dissolving drug
Weigh respectively Europium chloride, 1,10- phenanthroline, α-thioyl trifluoroacetone, sodium hydroxide be 0.258 g ±
0.001g,0.198 g ± 0.001g,0.444 g ± 0.001g,0.040 g± 0.001g；
Weighed drug is respectively placed in beaker, 10 mL of dehydrated alcohol is added, 20 min is stood, dissolves drug；
2. rare earth compounding Eu (TTA)2(Phen) synthesis of MAA
It is carried out in water-bath；
The EuCl that will will have been dissolved first3Ethanol solution, TTA ethanol solution are added dropwise in three-neck flask respectively,
Adjusting solution ph with NaOH ethanol solution is between 4~5.It is then added dissolved with Phen ethanol solution and adjusts pH value and be
6.5~7(also uses NaOH ethanol solution to be adjusted).Finally, MAA is added, it may appear that a small amount of pink precipitate, 60 DEG C of constant temperature
It is stirred to react 4 h.After reaction, precipitating product is washed 3 times with dehydrated alcohol, is placed in 50 DEG C of vacuum ovens dry 24
H finally obtains pale pink powder Eu (C8H5F3O2S)2(C12H8N2)(C7H10O3), synthetic route chart is as follows.
(2) bonding type high molecular fluorescent material Eu-PVA is prepared
1. preparing high-molecular copolymer Eu-PVAc
It is carried out in thermostat water bath；
Weigh rare earth compounding Eu (TTA)2(Phen) MAA is 0.036g ± 0.001g, azodiisobutyronitrile initiator
0.0175g ± 0.001g measures ± 0.001 mL of 3.00 mL of n,N-Dimethylformamide and is added in tool test tube, ultrasound
It is abundant that concussion dissolves complex and initiator.5.00 mL ± 0.01 are added after leading to nitrogen 15 minutes into tool branch pipe
The Vinyl Acetate Monomer of mL continues logical 35 min of nitrogen, seals reaction unit, be put into 65 DEG C of isothermal reactions in thermostat water bath
6 h, to which after reaction, product Eu-PVAc deionized water and dehydrated alcohol are alternately washed 3 times and in 55 DEG C of vacuum drying ovens
24 hours of middle drying, synthetic route chart are as follows.
2. preparing the polymer-based fluorescent material Eu-PVA of bonding type
It is carried out in electromagnetic heating water-bath；
The high-molecular copolymer Eu-PVAc for weighing 2.00 g ± 0.01g is dissolved in ± 0.001 mL methanol of 30.00 mL,
It is added in three-neck flask, 15 min of heating stirring, the NaOH that addition NaOH content is 0.08 g ± 0.01g at 40 DEG C/
In methanol solution (30 mL).After stirring 2 hours, faint yellow product precipitates completely.By freezing ultracentrifugation (8000 rpm, 10
Min) sediment separate out and it is washed with water for several times that methanol is until the pH value of mixed solution reaches 7, by product in 55 DEG C of vacuum drying ovens
Middle drying 12 hours, synthetic route chart is as follows.
(3) electrostatic spinning prepares bonding type Fluorescent falsification-preventing fiber
1. the preparation of spinning solution
0.4g ± 0.01g bonding type high molecular fluorescent material Eu-PVA(is added in 100 mL beakers and uses preceding drying one week
It is spare), in the distilled water of 20 mL, stirring is allowed to uniformly mixed clear solution for 10 minutes, stands 24 h, must clarify uniform molten
Liquid saves backup.Stop heating after heat treatment, ferric oxide nano band array film is made to cool to 25 DEG C with the furnace；
2. the preparation of the polymer-based Fluorescent falsification-preventing fiber of bonding type
Electrospinning conditions: spinning voltage of electric field is 24 kV；Receiving distance is 15 cm；Injection speed is 0.2 mL/h；Syringe needle
Outer diameter is 0.82 mm；Spinning solution concentration is 10wt%.
Firstly, spinning solution is poured into the syringe that specification is 20 mL, syringe is fixed on syringe pump, adjusts syringe pump
Parameter.It is smooth on receiving screen to spread aluminium foil, and it is connected with cathode, syringe needle part is connected with anode.It checks
Syringe pump and tourelle are opened after whole route is errorless, when the first drop spinning solution occurs in syringe needle, open high voltage power supply, slowly
Required voltage is adjusted, the polymer-based Fluorescent falsification-preventing fiber of bonding type is obtained on the receiving screen of ground connection.After spinning, it will obtain
The nano fibrous membrane obtained places 24 h of baking oven, and temperature setting is 55 DEG C,
To promote the further volatilization of spinning solution in nano fibrous membrane.
(4) test, analysis and characterization
To the pattern of the polymer-based Fluorescent falsification-preventing fiber of the bonding type of preparation, ingredient, structure, fluorescence property, thermal stability into
Row test, analysis and characterization；
Morphology analysis has been carried out to the polymer-based Fluorescent falsification-preventing fiber of bonding type is carried out with scanning electron microscope；
Fluorescence property analysis has been carried out with the polymer-based Fluorescent falsification-preventing fiber of Fluorescence Spectrometer para-linkage type；
It is analyzed with the structure of the polymer-based Fluorescent falsification-preventing fiber of Fourier infrared spectrograph para-linkage type；
It is analyzed with the thermal stability of the polymer-based Fluorescent falsification-preventing fiber of thermogravimetric analyzer para-linkage type；
Conclusion: the polymer-based fluorescent nano-fiber of bonding type is random random alignment, and the diameter distribution of fiber is relatively uniform,
The surface smoother of fiber, diameter are about 150 ~ 250 nm；Bonding type fluorescent fiber thermal stable temperature can reach 290.2
℃；A length of 396 nm of the optimum excitation wave of bonding type fluorescent nano-fiber containing rare earth compounding, best launch wavelength are
612nm。
Claims (3)
1. a kind of preparation method of nanoscale bonding type Fluorescent falsification-preventing fiber, which comprises the steps of: (1) prepare
Rare earth compounding Eu (C8H5F3O2S)2(C12H8N2)(C7H10O3)
1. weighing and dissolving drug
Weigh respectively Europium chloride, 1,10- phenanthroline, α-thioyl trifluoroacetone, sodium hydroxide be 0.258 g ±
0.001g,0.198 g ± 0.001g,0.444 g ± 0.001g,0.040 g± 0.001g；
Weighed drug is respectively placed in beaker, dehydrated alcohol, which is added, dissolves drug；
2. rare earth compounding Eu (C8H5F3O2S)2(C12H8N2)(C7H10O3) synthesis
The EuCl that will have been dissolved first3Ethanol solution, α-thioyl trifluoroacetone ethanol solution are added dropwise respectively
In three-neck flask, adjusting solution ph with the ethanol solution of NaOH is between 4~5；Then it is added dissolved with 1,10- phenanthroline
Ethanol solution and adjust pH value be 6.5~7, finally, be added ± 0.01 mL methacrylic acid of 0.086 mL, it may appear that
Mixed solution containing red precipitate is stirred to react 4 h in 60 DEG C of constant temperature by a small amount of pink precipitate, after reaction, precipitating
Product is washed with dehydrated alcohol is placed in dry 24 h of 50 DEG C of vacuum ovens, finally obtains pale pink powder Eu
(C8H5F3O2S)2(C12H8N2)(C7H10O3)；
(2) bonding type high molecular fluorescent material Eu-PVA is prepared
1. preparing high-molecular copolymer Eu-PVAc
Weigh rare earth compounding Eu (C8H5F3O2S)2(C12H8N2)(C7H10O3) it is 0.036g ± 0.001g, azodiisobutyronitrile
Initiator 0.0175g ± 0.001g measures ± 0.001 mL of 3.00 mL of n,N-Dimethylformamide and tool test tube is added
In, it is abundant that ultrasonic vibration dissolves complex and initiator；Into tool test tube lead to nitrogen be added after 15 minutes 5.00 mL ±
The Vinyl Acetate Monomer of 0.01 mL continues logical 35 min of nitrogen, seals reaction unit, be put into 65 DEG C of constant temperature in thermostat water bath
6 h are reacted, to which after reaction, product Eu-PVAc deionized water and dehydrated alcohol are alternately washed and dried in 55 DEG C of vacuum
Dry 24 hours in case；
2. preparing the polymer-based fluorescent material Eu-PVA of bonding type
The high-molecular copolymer Eu-PVAc for weighing 2.00g ± 0.01g is dissolved in ± 0.001 mL methanol of 30.00 mL,
It is added in three-neck flask, 15 min of heating stirring, the NaOH/ first that NaOH content is ± 0.01 g of 0.08 g is added at 40 DEG C
In alcoholic solution；After stirring 2 hours, faint yellow product precipitates completely；By freezing ultracentrifugation sediment separate out and it is washed with water
Methanol reaches 7 until the pH value of mixed solution for several times, and product is 12 hours dry in 55 DEG C of vacuum drying ovens, obtains bonding type height
Molecule base fluorescent material Eu-PVA；
(3) electrostatic spinning prepares bonding type Fluorescent falsification-preventing fiber
1. the preparation of spinning solution
The distilled water of ± 0.01 g bonding type high molecular fluorescent material Eu-PVA and 20 mL of 0.4 g are added in beaker, stirs
It is allowed to uniformly mixed that clear solution, 24 h of standing obtain clarification homogeneous solution, save backup；
2. the preparation of the polymer-based Fluorescent falsification-preventing fiber of bonding type
Electrospinning conditions: spinning voltage of electric field is 24 kV；Receiving distance is 15 cm；Injection speed is 0.2 mL/h；Syringe needle
Outer diameter is 0.82 mm；Spinning solution concentration is 10wt%；
Firstly, spinning solution is poured into the syringe that specification is 20 mL, syringe is fixed on syringe pump, adjusts syringe pump parameter,
It is smooth on receiving screen to spread aluminium foil, and it is connected with cathode, syringe needle part is connected with anode；Check overall wire
Syringe pump and tourelle are opened after road is errorless, when the first drop spinning solution occurs in syringe needle, are opened high voltage power supply, are slowly adjusted to
Required voltage obtains the polymer-based Fluorescent falsification-preventing fiber of bonding type on the receiving screen of ground connection.
2. a kind of preparation method of nanoscale bonding type Fluorescent falsification-preventing fiber as described in claim 1, which is characterized in that step
(3) in after spinning, the nano fibrous membrane of acquisition is placed into 24 h of baking oven, temperature setting is 55 DEG C.
3. a kind of preparation method of nanoscale bonding type Fluorescent falsification-preventing fiber as claimed in claim 1 or 2, which is characterized in that
It further include step (4) test, analysis and characterization
To the pattern of the polymer-based Fluorescent falsification-preventing fiber of the bonding type of preparation, ingredient, structure, fluorescence property, thermal stability into
Row test, analysis and characterization；
Morphology analysis has been carried out to the polymer-based Fluorescent falsification-preventing fiber of bonding type is carried out with scanning electron microscope；
Fluorescence property analysis has been carried out with the polymer-based Fluorescent falsification-preventing fiber of Fluorescence Spectrometer para-linkage type；
It is analyzed with the structure of the polymer-based Fluorescent falsification-preventing fiber of Fourier infrared spectrograph para-linkage type；
It is analyzed with the thermal stability of the polymer-based Fluorescent falsification-preventing fiber of thermogravimetric analyzer para-linkage type.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910530871.7A CN110387593B (en) | 2019-06-19 | 2019-06-19 | Preparation method of nanoscale bonding type fluorescent anti-counterfeiting fiber |
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| CN114457451A (en) * | 2022-01-28 | 2022-05-10 | 太原理工大学 | Preparation method of micron-sized bonding type fluorescent anti-counterfeiting fiber |
| CN114622297A (en) * | 2022-03-25 | 2022-06-14 | 太原理工大学 | Preparation method of nanoscale dual-wavelength bonded fluorescent anti-counterfeiting fiber |
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