CN111724672A - Anti-counterfeit label based on microcapsule structure - Google Patents

Anti-counterfeit label based on microcapsule structure Download PDF

Info

Publication number
CN111724672A
CN111724672A CN202010700727.6A CN202010700727A CN111724672A CN 111724672 A CN111724672 A CN 111724672A CN 202010700727 A CN202010700727 A CN 202010700727A CN 111724672 A CN111724672 A CN 111724672A
Authority
CN
China
Prior art keywords
low
layer
voltage
ink
microcapsule structure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010700727.6A
Other languages
Chinese (zh)
Inventor
钱俊
叶双莉
李庆芝
廖宇
刘汉东
王鑫
谷思怡
黄月
陈云阳
李佳
孙基素
张海斋
马晓花
赵美君
宋蓉
程凯兴
魏旭冉
陈袁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan Shidimu Cultural Media Co ltd
Original Assignee
Wuhan Shidimu Cultural Media Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuhan Shidimu Cultural Media Co ltd filed Critical Wuhan Shidimu Cultural Media Co ltd
Priority to CN202010700727.6A priority Critical patent/CN111724672A/en
Publication of CN111724672A publication Critical patent/CN111724672A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/02—Forms or constructions
    • G09F3/0291—Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/02—Printing inks
    • C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/02—Printing inks
    • C09D11/08—Printing inks based on natural resins
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/02—Printing inks
    • C09D11/10—Printing inks based on artificial resins
    • C09D11/106—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C09D11/107—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from unsaturated acids or derivatives thereof
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/02—Forms or constructions

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)

Abstract

The invention relates to the technical field of anti-counterfeit labels, in particular to an anti-counterfeit label based on a microcapsule structure, which at least comprises a substrate layer, wherein a low-voltage heating ink layer and a microcapsule structure layer are at least arranged on the substrate layer, the microcapsule structure layer is a microcapsule wrapping ink or dye, and the low-voltage heating ink layer is connected with a power supply. This scheme adopts microcapsule parcel printing ink or dyestuff, when the heating of low-voltage heating printing ink layer made the microcapsule structural layer break, enabled the label and produced irreversible colour change, can follow the visual true and false of judging directly perceived fast.

Description

Anti-counterfeit label based on microcapsule structure
Technical Field
The invention relates to the technical field of anti-counterfeit labels, in particular to an anti-counterfeit label based on a microcapsule structure.
Background
The anti-counterfeiting label is a mark which can be stuck, printed and transferred on the surface of an object and has an anti-counterfeiting function. The anti-counterfeiting characteristic and the identification method of the anti-counterfeiting label are the main structures of the anti-counterfeiting label, and the anti-counterfeiting is a preventive measure for the actions of counterfeiting or copying for the purpose of deception and without permission of all persons. At present, the diversity of anti-counterfeiting technologies generates watermark anti-counterfeiting, digital code anti-counterfeiting, bar code anti-counterfeiting, two-dimensional code anti-counterfeiting and the like, but the labels can not directly change colors and give visual impact to people.
The microcapsule technology is a technology for forming a core-shell structure by wrapping solid, liquid and gas in a polymer film. The microcapsules can encapsulate and protect the core material. Under the appropriate temperature conditions, the microcapsules are destroyed, thereby releasing the core material.
Disclosure of Invention
The invention aims to design an anti-counterfeiting label by utilizing a microcapsule structure, and when the microcapsule structure is broken, the anti-counterfeiting label can generate irreversible color change, so that the effect of quickly judging authenticity is achieved.
In order to solve the problems, the invention provides an anti-counterfeit label based on a microcapsule structure, which at least comprises a substrate layer, wherein at least a low-voltage heating ink layer and a microcapsule structure layer are arranged on the substrate layer, the microcapsule structure layer is a microcapsule wrapping ink or dye, and the low-voltage heating ink layer is connected with a power supply.
And the power supply is a USB interface or a switch and a battery which can be connected with electricity, the USB interface or the switch is positioned at the edge of the anti-counterfeit label, and the low-voltage heating ink layer is connected with the power supply through conductive ink or conductive metal.
Moreover, the microcapsule is prepared by adopting one or more of sodium alginate, chitosan, gelatin and porous starch in any proportion.
And a shielding layer is arranged between the low-voltage heating ink layer and the microcapsule structure layer.
And a covering layer is also arranged on the microcapsule structure layer.
The low-voltage heating ink layer comprises the following components in percentage by mass: 5-10% of water-based acrylic resin, 5-10% of rosin resin, 5-15% of graphite, 3-10% of carbon black, 0-50% of carbon nanotube dispersion liquid, 0.5-1.5% of pH regulator, 1-5% of dispersing agent, 0-1% of xanthan gum, 0.5-1% of defoaming agent and 10-50% of deionized water.
The low-voltage heating ink layer is formed by coating low-voltage heating ink on the substrate layer through a screen printing or coating method.
The pH regulator is one or more of formamide, ethanolamine or ammonia water which are mixed in any proportion.
The dispersant is one of Dispenser W-518 type aqueous wetting dispersant, Dispenser W-920 type aqueous wetting dispersant, NUOSPERSE FX 600 type aqueous wetting dispersant or NUOSPERSE FX 365 type aqueous wetting dispersant or a plurality of the dispersant mixed in any proportion.
The defoaming agent is one or a plurality of types of DefomW-0506 type waterborne defoaming agents, TEGO Foamex 805 type waterborne defoaming agents or SF-809B type standard American silicon fluorine defoaming agents which are mixed in any proportion.
The technical scheme of the invention has the beneficial effects that:
(1) the microcapsule is adopted to wrap the printing ink or the dye, when the low-voltage heating printing ink layer is heated to break the microcapsule structure layer, the label can generate irreversible color change, and the authenticity can be visually and rapidly judged.
(2) The power supply has two options, namely a USB interface capable of being connected with electricity, and a switch and a battery. When the power supply adopts the combination of the switch and the battery, the low-voltage heating ink layer can be heated by closing the switch; when the USB interface is adopted, the charging power supply or the mobile power supply can be directly connected with the USB interface arranged on the edge of the anti-counterfeiting label, so that the anti-counterfeiting label is convenient to use and is not limited by places.
(3) Be equipped with the shielding layer between low voltage heating ink layer and the microcapsule structural layer and be used for covering the colour on low voltage heating ink layer, whether be convenient for observe the colour and change, the colour on shielding layer can design according to actual conditions, for example adopt white film to make.
(4) The low-voltage heating ink provided by the invention has the following advantages: 1. biomass materials such as xanthan gum and rosin resin are used as raw materials, so that the effects of energy conservation and environmental protection are achieved; 2. under the combined action of the xanthan gum and the rosin resin, the overall proportion of the acrylic resin in the ink is reduced, so that the proportion of conductive fillers such as carbon black, graphite and carbon nano tubes in a carbon film formed after the prepared low-voltage heating ink is dried is increased, and the conductivity is excellent; 3. the low-voltage heating ink has higher viscosity and better thixotropy, the viscosity of the ink is instantly reduced under the action of shearing force in the printing process to form a thicker carbon film, the viscosity is rapidly improved after the printing is finished, so that the ink is not diffused on a printing stock, the printing adaptability of the ink is improved, and the low-voltage heating ink is suitable for screen printing; 4. the low-voltage heating ink can obtain a better heating effect under a lower working voltage. High heating efficiency and high heating rate.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2(a) is a graph showing the operation of 3cm by 3cm low voltage heating ink packs prepared in example 1 of the present invention at different voltages;
FIG. 2(b) is the operation of the low-voltage heating ink block in example 1 under the condition of continuously changing voltage;
FIG. 3 is a graph showing the temperature of the low-voltage heat-generating ink stick as a function of time in example 1;
FIG. 4 is a graph showing the heating temperature of the low-voltage heating ink block as a function of power density in this example 1;
FIG. 5 is a graph showing the volt-ampere relationship of the low voltage thermal ink stick of this example 1;
fig. 6 is a graph showing the relationship between the input voltage and the saturation temperature of the low-voltage heating ink block in this embodiment 1.
Description of reference numerals: 1. the device comprises a base layer, 2 a low-voltage heating ink layer, 3a shielding layer, 4 a microcapsule structure layer, 5 and a USB interface.
Detailed Description
The present invention/invention will be described in detail with reference to the accompanying drawings and examples, and the present invention/invention is not limited to the examples.
An embodiment of the anti-counterfeit label based on the microcapsule structure is shown in fig. 1, and at least comprises a substrate layer 1, wherein a low-voltage heating ink layer 2, a shielding layer 3 and a microcapsule structure layer 4 are sequentially arranged on the substrate layer, the microcapsule structure layer is a microcapsule wrapping ink or dye, and the low-voltage heating ink layer is connected with a power supply. The power is the USB interface 5 that can connect the electricity, the low voltage heating ink layer is connected through the wire that conductive ink or conductive metal made with the power, the wire is conductive ink or conductive metal and makes, conductive ink can adopt the low voltage heating ink that this scheme provided, also can be other types of conductive ink. The concrete position that sets up of wire is according to the corresponding setting of size on the low-voltage heating printing ink layer, can set up from top to bottom on the low-voltage heating printing ink layer, also can set up at low-voltage heating printing ink layer both ends. The low voltage heating ink layer acts like a heating resistor.
The power supply can adopt a combination of a switch and a battery besides adopting a USB interface capable of being connected with electricity. When the power supply is combined with the battery, the switch is closed to provide power supply heating for the low-voltage heating ink layer, and the switch needs to be arranged at the edge of the anti-counterfeiting label for convenient use; when the USB interface is adopted, the charging power supply or the mobile power supply can be directly connected with the USB interface arranged on the edge of the anti-counterfeiting label. The circuit is simple and easy to realize, and the circuit is formed by connecting a switch, a battery, a lead and a low-voltage heating ink layer into a loop, or two poles of a USB interface are connected with the low-voltage heating ink layer through the lead.
The low-voltage heating ink layer is formed by coating low-voltage heating ink on a substrate layer by a screen printing or coating method, and the substrate layer is made of any material capable of printing ink, such as paper, cloth, cotton and plastic.
The shielding layer between the low-voltage heating ink layer and the microcapsule structure layer is used for shielding the color of the low-voltage heating ink layer, so that whether color change occurs or not can be observed conveniently, and the color of the shielding layer can be designed according to actual conditions, for example, the shielding layer is made of white plastic films.
The microcapsule structure layer can be further provided with a covering layer for protecting the microcapsule structure layer.
The microcapsule structure layer is prepared by one or more of sodium alginate, chitosan, gelatin and porous starch in any proportion. The heat expansion microcapsule is a kind of polymer particle prepared by microcapsule technology, the particle size is 5-100 μm, the outer shell is composed of airtight thermoplastic high polymer, and the inner part of the outer shell is wrapped by low boiling point organic solvent. The boiling point of the organic solvent is less than the glass transition temperature of the polymer shell, the polymer shell is softened after being heated to a certain temperature, the low-boiling-point organic solvent serves as a foaming agent, and the internal vapor pressure generated by gasification enables the microcapsules to expand and become larger. After the thermal expansion microcapsules are foamed, the size of the thermal expansion microcapsules is stable within a certain temperature range, and the microcapsules gradually shrink due to the escape of the internal foaming agent when the thermal expansion microcapsules are continuously heated.
Common wall materials for microcapsules are: sodium alginate, molecular formula (C6H7O6Na) n, is white or light yellow amorphous powder, tasteless, easily soluble in water, insoluble in organic solvent such as alcohol, is a natural polysaccharide, has biological adhesion biocompatibility and is biodegradable. The sodium alginate has the stability, solubility, adhesiveness and safety required by the auxiliary materials of the pharmaceutical preparation, and is suitable for preparing the pharmaceutical preparation. Chitosan, also called chitosan, is white or yellowish solid in tablet package, is the only alkaline polysaccharide in natural polysaccharide, is easily soluble in hydrochloric acid and most of organic acids, and is insoluble in water and alkali solution, and chitosan has good bioadhesion, biocompatibility, biodegradability and better film-forming property. ③ the gelatin is a protein mixture which is insoluble in cold water but soluble in hot water, is colorless or light yellow transparent flake or granule, can absorb 5-10 times of water by mass per se and swell, and is insoluble in ethanol, chloroform, ethyl ether and the like. Can generate cross-linking reaction with aldehydes such as formaldehyde and the like to form a slow release layer, and the gelatin has biocompatibility, biodegradability and gel formability and is suitable for being used as a microcapsule wall material. The porous starch is a novel modified starch, the natural starch is treated by enzyme, pores are formed on the surface of the natural starch and extend into the granules, the porous starch is a hollow granule similar to a horse honeycomb, various substances can be contained in the hollow granule, the porous starch has good adsorbability, and students use the porous starch as a microcapsule wall material in recent years and obtain good effect.
The technical scheme of the invention has the beneficial effects that:
(4) the microcapsule is adopted to wrap the printing ink or the dye, when the low-voltage heating printing ink layer is heated to break the microcapsule structure layer, the label can generate irreversible color change, and the authenticity can be visually and rapidly judged.
(5) The power supply has two options, namely a USB interface capable of being connected with electricity, and a switch and a battery. When the power supply adopts the combination of the switch and the battery, the low-voltage heating ink layer can be heated by closing the switch; when the USB interface is adopted, the charging power supply or the mobile power supply can be directly connected with the USB interface arranged on the edge of the anti-counterfeiting label, so that the anti-counterfeiting label is convenient to use and is not limited by places.
Be equipped with the shielding layer between low voltage heating ink layer and the microcapsule structural layer and be used for covering the colour on low voltage heating ink layer, whether be convenient for observe the colour and change, the colour on shielding layer can design according to actual conditions, for example adopt white film to make.
The low-voltage heating ink in the heating mask consists of the following components in percentage by mass: 5-10% of water-based acrylic resin, 5-10% of rosin resin, 5-15% of graphite, 3-10% of carbon black, 0-50% of carbon nanotube dispersion liquid, 0.5-1.5% of pH regulator, 1-5% of dispersing agent, 0-1% of xanthan gum, 0.5-1% of defoaming agent and 10-50% of deionized water. The pH regulator is one or more of formamide, ethanolamine or ammonia water which are mixed in any proportion. The dispersant is one of Dispenser W-518 type aqueous wetting dispersant, Dispenser W-920 type aqueous wetting dispersant, NUOSPERSE FX 600 type aqueous wetting dispersant or NUOSPERSE FX 365 type aqueous wetting dispersant or a plurality of the dispersant mixed in any proportion. The defoaming agent is one or a plurality of types of DefomW-0506 type waterborne defoaming agents, TEGO Foamex 805 type waterborne defoaming agents or SF-809B type standard American silicon fluorine defoaming agents which are mixed in any proportion.
The preparation method of the low-voltage heating ink specifically comprises the following steps:
(1) weighing each component of the low-voltage heating ink according to the mass parts, placing the water-based acrylic resin, the rosin resin, the pH regulator and the deionized water in a stirring kettle, stirring for 5-10 min, after uniformly mixing, sequentially adding the carbon black, the graphite, the carbon nanotube dispersion liquid and the xanthan gum, uniformly stirring, finally adding the dispersing agent and the defoaming agent, and uniformly stirring to form the primary heating ink;
(2) mixing the primary heating ink and the ball-milled beads according to the mass ratio of 3:1, placing the mixture in an electric stirrer, stirring the mixture for 1-3 hours, taking out the mixture, filtering the mixture, and finally placing the primary heating ink in a sand mill, and grinding the mixture until the particle size is below 5 microns to obtain the low-voltage heating ink.
In the preparation process of the low-voltage heating ink, xanthan gum, conductive fillers such as carbon black, graphite and carbon nano tubes and deionized water can form a stable three-dimensional network structure, so that graphene, carbon black and graphite generated in the mechanical grinding process have better dispersion stability; the xanthan gum serving as the biomass hydrogel can form a reversible hydrogel with solvents such as deionized water and the like, free water molecules in the ink are reduced, the viscosity of the ink is improved, the reversible hydrogel enables the viscosity of the prepared low-voltage heating ink to be larger than 10000mPa & s in a standing state, the viscosity of the low-voltage heating ink is reduced to 4000-5000 mPa & s under stirring at a rotating speed of 60r/min, and the viscosity of the low-voltage heating ink is recovered to be more than 10000mPa & s after stirring is stopped.
Example 1:
weighing 7% of water-based acrylic resin, 7% of rosin resin, 6% of graphite, 10% of carbon black, 35% of carbon nanotube dispersion liquid, 0.5% of formamide, 0.5% of ethanolamine, 5% of Disponer W-518 type water-based wetting dispersant, 0.3% of xanthan gum, 0.5% of TEGO Foamex 805 type water-based defoaming agent and 28.2% of deionized water according to parts by mass.
Placing 7% of water-based acrylic resin, 7% of rosin resin, 0.5% of formamide, 0.5% of ethanolamine and 28.2% of deionized water in a stirring kettle, stirring for 5-10 min, after uniformly mixing, sequentially adding 10% of carbon black, 6% of graphite, 35% of carbon nanotube dispersion liquid and 0.3% of xanthan gum, uniformly stirring, finally adding 5% of Disponer W-518 type water-based wetting dispersant and 0.5% of TEGO Foamex 805 type water-based defoaming agent, and uniformly stirring to form primary heating ink; mixing the primary heating ink and the ball-milled beads according to the mass ratio of 3:1, placing the mixture in an electric stirrer to be mixed and dispersed for 2 hours, taking out the mixture to be filtered, and finally placing the primary heating ink in a sand mill to be ground until the particle size is below 5 mu m to obtain the low-voltage heating ink.
The low-voltage heating ink obtained in the embodiment has the viscosity of 9000-11000 mPa & s under stirring at the rotating speed of 12r/min, the viscosity of 4000-5000 mPa & s under stirring at the rotating speed of 60r/min, the thickness of the dried ink layer is 15-18 mu m, the low-voltage heating ink can be used for screen printing of a 200-mesh silk screen printing plate once, and the sheet resistance value of the low-voltage heating ink is 9.6 omega/25 mu m. The saturation temperature of the low-voltage heating ink heating module with the size of 2cm multiplied by 2.5cm under the working voltage of 3V can reach 80 ℃.
The measurement conditions were as follows: 1. square resistance: measurement using a four-probe sheet resistance tester
2. Viscosity: measurement using a rotational viscometer
3. Saturation temperature: measured using an infrared camera.
FIG. 2(a) shows the operating conditions of a 3cm × 3cm low-voltage thermal ink block prepared in example 1 of the present invention under different voltages, and when the low-voltage thermal ink block is powered on, the heating data of DC voltages of 1.0v, 1.5v, 2.0v, 2.5v and 3.0v are respectively powered on, and the temperature response rate of the low-voltage thermal ink block and the saturation temperature under each operating voltage are tested, so that it can be seen that the temperature influence speed is fast, the saturation temperature can be reached by powering on for about 10s, the required voltage is extremely low, the heating efficiency is high, and the temperature rise rate is fast;when 2.0v voltage is applied, the working current is 0.583A, the saturation temperature is 100 ℃, when 2.5v voltage is applied, the working current is 0.749A, the saturation temperature is 130 ℃, when 3.0v voltage is applied, the working current is 0.915A, and the saturation temperature reached by the low-voltage heating ink block is about 175 ℃, which shows that the prepared low-voltage heating ink block has very high electrothermal radiation conversion efficiency, the required working voltage is extremely low, and the low-voltage heating ink is safer to use, and fig. 2(b) shows that the low-voltage heating ink block operates under the condition of continuously changing voltage, the voltage applied to the low-voltage heating ink block is continuously increased from 1.0v to 3.0v at intervals of 0.5v, the response rate and the heating stability are very stable, and the saturation temperature reached under the same isoelectric voltage is consistent with the fig. 2(a), according to the electrothermal radiation conversion efficiency, β is S α (T α)r 4-T0 4) (P), wherein β is the electrothermal radiation conversion efficiency of the electrothermal film, S is the heating area of the electrothermal film, α is the Spanderson-Boltzmann constant (5.67 × 10)-8In the unit of W/m2K4)，TrIs the saturation temperature, T, at a certain operating voltage0The formula shows that the electrothermal radiation conversion efficiency β of the low-voltage heating ink block under the working voltage of 3v is 74.75 percent and is about 10 percent higher than that of the traditional electrothermal material.
The carbon material is stable in chemical property, can stably exist in the air, is not suitable for reacting with oxygen, the aqueous acrylic resin used by the low-voltage heating ink block is stable and does not decompose in the air below 250 ℃, and the conductive carbon particles are stable and does not decompose in the air below 400 ℃, so that the prepared low-voltage heating ink block can continuously and stably work at the running temperature below 200 ℃. To further verify that the low voltage heat-generating ink block can continuously and stably operate at high temperature (175 ℃), the low voltage heat-generating ink block is modulated to have higher working voltage (3.0v) and is kept for more than 4h in the operation state at 175 ℃. As shown in fig. 3, the temperature and time variation relationship shows that the saturation temperature remains unchanged in the high temperature state, which indicates that the electrothermal infrared radiation efficiency of the low voltage heat-generating ink block and the composition and performance of the ink are not changed, which is enough to prove that the stability of the low voltage heat-generating ink in the air and in the high temperature state is very outstanding.
Fig. 4 shows a functional relationship between the heating temperature and the power density of the low-voltage heating ink block prepared in this embodiment, and a fitted curve of the temperature and the power density is approximately linear (T ═ 249 × P +37, T is the temperature, and P is the energy density), and as can be seen from the graph, the slope is steep (about 249.53 ℃ c, cm2W-1), which indicates that the saturation temperature that can be reached per unit area under the same power density condition is higher, i.e., the electrothermal infrared radiation efficiency is higher, which indicates that the electrothermal infrared radiation efficiency of the low-voltage heating ink block prepared based on this embodiment is higher, and the energy consumption is lower.
Fig. 5 is a graph of the volt-ampere (V-a) relationship of the low voltage heat-generating ink stick prepared in this example, and it can be seen from the fitted curve that the voltage V applied to the low voltage heat-generating ink stick is almost proportional to the passing current a, which shows that the resistance of the low voltage heat-generating ink stick does not change with the increase of temperature (the saturation temperature is 47 ℃ at 1.0V to 175 ℃ at 3.0V), i.e., the resistance does not change with the change of temperature.
Fig. 6 is a graph of the relationship between the input voltage and the saturation temperature of the low-voltage heat-generating ink block prepared in this example, and it can be seen from the fitted curve in the graph that the saturation temperature reached when the low-voltage heat-generating ink block is powered on is exponential to the voltage applied at both ends: t ═ A1exp(-V/t1)-y0Where T is the saturation temperature of the electrothermal film, V is the voltage at which it is switched on, A1＝39.98±13.40，t1＝-1.91±0.31，y0-14.84 ± 16.71. The exponential relationship between temperature and voltage shows that the conversion efficiency of the low-voltage heat-generating ink block prepared in the embodiment through infrared heat radiation is high.
The low-voltage heating ink block is placed in a room-temperature air environment, the same voltage of 3.0v is applied to the same low-voltage heating ink block for ten days continuously, the temperature response rate and the maximum saturation temperature of the low-voltage heating ink block are almost unchanged, and the stable operation in the air is shown, compared with some metal electrothermal materials (such as silver electrothermal materials) which are easily oxidized in the airMaterial) advantages are evident. In addition, in order to verify that the folding resistance test of the flexible electric heating material is carried out for 2500 folds continuously, the resistance of the low-voltage heating ink block is not changed obviously, and the resistance is regular along with the change of the bending angle, which shows that after 2500 folds, the ink on the flexible electric heating film is connected perfectly and is not broken. The pressure resistance of the material is extremely outstanding and is 1x10 when the material is subjected to pressure test by a tablet press5The structure is not destroyed under a pressure below kpa.
Example 2:
weighing 7% of water-based acrylic resin, 7% of rosin resin, 5% of graphite, 10% of carbon black, 35% of carbon nanotube dispersion liquid, 1% of ethanolamine, 5% of Disponer W-920 type water-based wetting dispersant, 0.3% of xanthan gum, 0.5% of DefomW-0506 type water-based defoaming agent and 29.2% of deionized water according to parts by mass.
Placing 7% of water-based acrylic resin, 7% of rosin resin, 1% of ethanolamine and 29.2% of deionized water in a stirring kettle, stirring for 5-10 min, after uniformly mixing, sequentially adding 10% of carbon black, 5% of graphite, 35% of carbon nanotube dispersion liquid and 0.3% of xanthan gum, uniformly stirring, finally adding 5% of Disponer W-920 type water-based wetting dispersant and 0.5% of DefomW-0506 type water-based defoaming agent, and uniformly stirring to form primary heating ink; mixing the primary heating ink and the ball-milled beads according to the mass ratio of 3:1, placing the mixture in an electric stirrer to be mixed and dispersed for 2.5h, taking out and filtering the mixture, and finally placing the primary heating ink in a sand mill to be ground until the particle size is below 5 mu m to obtain the low-voltage heating ink.
The low-voltage heating ink obtained in the embodiment has the viscosity of 9000-11000 mPa & s under stirring at the rotating speed of 12r/min, the viscosity of 4000-5000 mPa & s under stirring at the rotating speed of 60r/min, the thickness of the dried ink layer is 15-18 mu m, the low-voltage heating ink can be used for screen printing of a 200-mesh silk screen printing plate once, and the sheet resistance value of the low-voltage heating ink is 10.6 omega/25 mu m. The saturation temperature of the low-voltage heating ink heating module with the size of 2cm multiplied by 2.5cm under the working voltage of 5V can reach 72 ℃.
Example 3:
respectively weighing 10% of waterborne acrylic resin, 5% of rosin resin, 12% of graphite, 6% of carbon black, 40% of carbon nanotube dispersion liquid, 1.5% of ammonia water, 5% of NUOSPERSE FX 365 type waterborne wetting dispersant, 0.4% of xanthan gum, 1% of SF-809B type standard American silicon fluorine defoaming agent and 19.1% of deionized water according to the mass parts.
Placing 10% of water-based acrylic resin, 5% of rosin resin, 1.5% of ethanolamine and 19.1% of deionized water in a stirring kettle, stirring for 5-10 min, after uniformly mixing, sequentially adding 6% of carbon black, 12% of graphite, 40% of carbon nanotube dispersion and 0.4% of xanthan gum, uniformly stirring, finally adding 5% of NUEROSPSE FX 365 type water-based wetting dispersant and 1% of SF-809B type standard silicon fluorine defoaming agent, and uniformly stirring to form primary heating ink; mixing the primary heating ink and the ball-milled beads according to the mass ratio of 3:1, placing the mixture in an electric stirrer to be mixed and dispersed for 2.5h, taking out and filtering the mixture, and finally placing the primary heating ink in a sand mill to be ground until the particle size is below 5 mu m to obtain the low-voltage heating ink.
The low-voltage heating ink obtained in the embodiment has the viscosity of 15000-20000 mPa & s under stirring at the rotating speed of 12r/min, the thickness of the dried ink layer is 20-22 mu m, the low-voltage heating ink can be used for screen printing of a 200-mesh silk screen plate once, and the sheet resistance value of the low-voltage heating ink is 8.9 omega/25 mu m. The saturation temperature of the low-voltage heating ink heating module with the size of 2cm multiplied by 2.5cm under the working voltage of 5V can reach 76 ℃.
Example 4:
weighing 5% of water-based acrylic resin, 10% of rosin resin, 9% of graphite, 6% of carbon black, 30% of carbon nanotube dispersion liquid, 0.5% of ethanolamine, 4% of a mixture of Disponer W-920 type water-based wetting dispersant and NUOSPERSE FX 600 type water-based wetting dispersant, 0.5% of xanthan gum, 0.5% of TEGO Foamex 805 type water-based defoaming agent and 34.5% of deionized water according to parts by mass.
Placing 5% of water-based acrylic resin, 10% of rosin resin, 0.5% of ethanolamine and 34.5% of deionized water in a stirring kettle, stirring for 5-10 min, after uniformly mixing, sequentially adding 6% of carbon black, 9% of graphite, 30% of carbon nanotube dispersion and 0.5% of xanthan gum, uniformly stirring, finally adding a mixed solution of 4% of Disponer W-920 type water-based wetting dispersant and NUOSPERSE FX 600 type water-based wetting dispersant and 0.5% of TEGO Foamex 805 type water-based defoaming agent, and uniformly stirring to form primary heating ink; mixing the primary heating ink and the ball-milled beads according to the mass ratio of 3:1, placing the mixture in an electric stirrer to be mixed and dispersed for 3 hours, taking out the mixture to be filtered, and finally placing the primary heating ink in a sand mill to be ground until the particle size is below 5 mu m to obtain the low-voltage heating ink.
The low-voltage heating ink obtained in the example has viscosity of 12000mPa & s under stirring at a rotating speed of 12r/min, the thickness of the dried ink layer is 19 μm, the low-voltage heating ink can be used for screen printing of a 200-mesh screen printing plate once, and the sheet resistance value of the low-voltage heating ink is 9.6 omega/25 μm. The saturation temperature of the low-voltage heating ink heating module with the size of 2cm multiplied by 2.5cm under the working voltage of 5V can reach 70 ℃.
Example 5:
respectively weighing 10% of water-based acrylic resin, 10% of rosin resin, 15% of graphite, 10% of carbon black, 1.5% of ethanolamine, 5% of NUOSPERSE FX 365 type water-based wetting dispersant, 1% of DefomW-0506 type water-based defoaming agent and 47.5% of deionized water according to parts by weight.
Placing 10% of water-based acrylic resin, 10% of rosin resin, 1.5% of ethanolamine and 47.5% of deionized water in a stirring kettle, stirring for 5-10 min, after uniformly mixing, sequentially adding 10% of carbon black and 15% of graphite, uniformly stirring, finally adding 5% of NUOSPERSE FX 365 type water-based wetting dispersant and 1% of DefomW-0506 type water-based defoaming agent, and uniformly stirring to form primary heating ink; mixing the primary heating ink and the ball-milled beads according to the mass ratio of 3:1, placing the mixture in an electric stirrer to be mixed and dispersed for 3 hours, taking out the mixture to be filtered, and finally placing the primary heating ink in a sand mill to be ground until the particle size is below 5 mu m to obtain the low-voltage heating ink.
The low-voltage heating ink obtained in the example has a viscosity of 18000mPa · s under stirring at a rotation speed of 12r/min, has a thickness of 23 μm after drying, can be used for screen printing of a 200-mesh screen printing plate once, and has a sheet resistance value of 12.8 Ω/25 μm. The saturation temperature of the low-voltage heating ink heating module with the size of 2cm multiplied by 2.5cm under the working voltage of 5V can reach 68 ℃.
Example 6:
weighing 7.5% of water-based acrylic resin, 7.5% of rosin resin, 5% of graphite, 8% of carbon black, 50% of carbon nanotube dispersion liquid, 0.8% of ammonia water, 1% of Disponer W-920 type water-based wetting dispersant, 1% of xanthan gum, 0.3% of mixed liquid of TEGO Foamex 805 type water-based defoamer and SF-809B type standard silicon fluorine defoamer and 18.9% of deionized water according to parts by weight.
Placing 7.5% of water-based acrylic resin, 7.5% of rosin resin, 0.8% of ammonia water and 18.9% of deionized water in a stirring kettle, stirring for 5-10 min, after uniformly mixing, sequentially adding 8% of carbon black and 5% of graphite, uniformly stirring, finally adding a mixed solution of 1% of Disponer W-920 type water-based wetting dispersant, 0.3% of TEGO Foamex 805 type water-based defoaming agent and SF-809B type standard silicon fluorine defoaming agent, and uniformly stirring to form primary heating ink; mixing the primary heating ink and the ball-milled beads according to the mass ratio of 3:1, placing the mixture in an electric stirrer to be mixed and dispersed for 1h, taking out the mixture to be filtered, and finally placing the primary heating ink in a sand mill to be ground until the particle size is below 5 mu m to obtain the low-voltage heating ink.
The low-voltage heating ink obtained in the embodiment has the viscosity of 11000mPa & s under the stirring at the rotating speed of 12r/min, the thickness of the dried ink layer is 18 mu m, the low-voltage heating ink can be used for screen printing of a 200-mesh screen printing plate once, and the sheet resistance value of the low-voltage heating ink is 9.0 omega/25 mu m. The saturation temperature of the low-voltage heating ink heating module with the size of 2cm multiplied by 2.5cm under the working voltage of 5V can reach 76 ℃.
Example 7:
weighing 8% of water-based acrylic resin, 5% of rosin resin, 12% of graphite, 3% of carbon black, 40% of carbon nanotube dispersion liquid, 0.5% of formamide, 0.5% of ethanolamine, 3% of NUOSPERSE FX 365 type water-based wetting dispersant, 0.3% of xanthan gum, 0.6% of DefomW-0506 type water-based defoaming agent and 27.1% of deionized water according to parts by mass.
Placing 8% of water-based acrylic resin, 5% of rosin resin, 0.5% of formamide, 0.5% of ethanolamine and 27.1% of deionized water in a stirring kettle, stirring for 5-10 min, after uniformly mixing, sequentially adding 3% of carbon black and 12% of graphite, uniformly stirring, finally adding 3% of NUOSPERSE FX 365 type water-based wetting dispersant and 0.6% of DefomoW-0506 type water-based defoaming agent, and uniformly stirring to form primary heating ink; mixing the primary heating ink and the ball-milled beads according to the mass ratio of 3:1, placing the mixture in an electric stirrer to be mixed and dispersed for 2.5h, taking out and filtering the mixture, and finally placing the primary heating ink in a sand mill to be ground until the particle size is below 5 mu m to obtain the low-voltage heating ink.
The low-voltage heat-generating ink obtained in the example has a viscosity of 13000mPa · s under stirring at a rotation speed of 12r/min, has a thickness of 21 μm after drying, can be used for screen printing of a 200-mesh screen printing plate once, and has a sheet resistance value of 10.9 Ω/25 μm. The saturation temperature of the low-voltage heating ink heating module with the size of 2cm multiplied by 2.5cm under the working voltage of 5V can reach 71 ℃.
The low-voltage heating ink provided by the invention can obtain a better heating effect under a lower working voltage; the low-voltage heating ink has high viscosity and high thixotropy, the viscosity of the ink is instantly reduced under the action of shearing force in the printing process to form a thick carbon film, the viscosity is rapidly improved after the printing is finished, the ink is prevented from diffusing on a printing stock, the printing adaptability of the ink is improved, and the low-voltage heating ink is suitable for screen printing. The xanthan gum in the components can play a role in dispersing graphene, carbon black and graphite, can replace part of acrylic resin, and the addition of a small amount of rosin resin can make up the poor adhesive force and mechanical property of the xanthan gum; under the combined action of the xanthan gum and the rosin resin, the overall proportion of acrylic resin in the ink is reduced, the xanthan gum and the rosin resin are both biomass materials, the energy-saving and environment-friendly effects can be achieved, and in addition, the addition of the xanthan gum and the rosin resin enables the proportion of conductive fillers such as carbon black, graphite and carbon nano tubes in a carbon film formed after the prepared low-voltage heating ink is dried to be increased, and the conductivity is excellent.

Claims (10)

1. An anti-counterfeit label based on microcapsule structure, at least comprises a substrate layer, and is characterized in that: the heating substrate is characterized in that at least a low-voltage heating ink layer and a microcapsule structure layer are arranged on the substrate layer, the microcapsule structure layer is microcapsules wrapping ink or dye, and the low-voltage heating ink layer is connected with a power supply.
2. The microcapsule structure-based anti-counterfeiting label according to claim 1, wherein: the power supply is a USB interface or a switch and a battery which can be connected with electricity, the USB interface or the switch is positioned at the edge of the anti-counterfeit label, and the low-voltage heating ink layer is connected with the power supply through conductive ink or conductive metal.
3. The microcapsule structure-based anti-counterfeiting label according to claim 1, wherein: the microcapsule is prepared by one or more of sodium alginate, chitosan, gelatin and porous starch in any proportion.
4. The microcapsule structure-based anti-counterfeiting label according to claim 1, wherein: and a shielding layer is arranged between the low-voltage heating ink layer and the microcapsule structure layer.
5. The microcapsule structure-based anti-counterfeiting label according to claim 1, wherein: the microcapsule structure layer is also provided with a covering layer.
6. The microcapsule structure-based anti-counterfeiting label according to claim 1, wherein: the low-voltage heating ink layer comprises the following components in percentage by mass: 5-10% of water-based acrylic resin, 5-10% of rosin resin, 5-15% of graphite, 3-10% of carbon black, 0-50% of carbon nanotube dispersion liquid, 0.5-1.5% of pH regulator, 1-5% of dispersing agent, 0-1% of xanthan gum, 0.5-1% of defoaming agent and 10-50% of deionized water.
7. The microcapsule structure-based anti-counterfeiting label according to claim 6, wherein: the low-voltage heating ink layer is formed by coating low-voltage heating ink on the substrate layer through a screen printing or coating method.
8. The microcapsule structure-based anti-counterfeiting label according to claim 6, wherein: the pH regulator is one or more of formamide, ethanolamine or ammonia water mixed in any proportion.
9. The microcapsule structure-based anti-counterfeiting label according to claim 6, wherein: the dispersant is one or more of DisponerW-518 type aqueous wetting dispersant, DisponerW-920 type aqueous wetting dispersant, NUOSPERSE FX 600 type aqueous wetting dispersant or NUOSPERSE FX 365 type aqueous wetting dispersant which are mixed in any proportion.
10. The microcapsule structure-based anti-counterfeiting label according to claim 6, wherein: the defoaming agent is one or more of a DefomW-0506 type waterborne defoaming agent, a TEGO Foamex 805 type waterborne defoaming agent or a SF-809B type standard silicon fluoride defoaming agent which is mixed in any proportion.
CN202010700727.6A 2020-07-17 2020-07-17 Anti-counterfeit label based on microcapsule structure Pending CN111724672A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010700727.6A CN111724672A (en) 2020-07-17 2020-07-17 Anti-counterfeit label based on microcapsule structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010700727.6A CN111724672A (en) 2020-07-17 2020-07-17 Anti-counterfeit label based on microcapsule structure

Publications (1)

Publication Number Publication Date
CN111724672A true CN111724672A (en) 2020-09-29

Family

ID=72572932

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010700727.6A Pending CN111724672A (en) 2020-07-17 2020-07-17 Anti-counterfeit label based on microcapsule structure

Country Status (1)

Country Link
CN (1) CN111724672A (en)

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11258998A (en) * 1998-03-13 1999-09-24 Konica Corp Adhesive label, film with lens having the same, and processing method of the same film with lens
CN103436074A (en) * 2013-08-05 2013-12-11 南昌大学 Preparation method of water-based conductive ink
CN103628358A (en) * 2013-08-10 2014-03-12 广东冠豪高新技术股份有限公司 Double-color-line anti-counterfeiting paper and production method thereof
CN106883679A (en) * 2017-03-27 2017-06-23 国网山东省电力公司威海供电公司 A kind of distribution line temperature-sensitive paster
CN106883684A (en) * 2017-04-01 2017-06-23 北京创新爱尚家科技股份有限公司 Graphene three-dimensional composite water soluble electric heating ink and preparation method thereof
CN106998597A (en) * 2017-03-20 2017-08-01 北京旭碳新材料科技有限公司 Electric heating device and device and preparation method thereof
CN107502067A (en) * 2017-08-31 2017-12-22 王雨生 A kind of high temperature sintering heating electrically conductive ink and preparation method thereof
CN108084823A (en) * 2017-12-18 2018-05-29 中南大学 A kind of electric-heating coatings and its preparation method and application
CN108160014A (en) * 2018-02-07 2018-06-15 南昌大学 It is a kind of to prepare double casing microcapsules device
CN109337448A (en) * 2018-10-17 2019-02-15 江苏扬中印刷有限公司 A kind of electrically conductive ink and preparation method thereof
CN110054930A (en) * 2019-03-12 2019-07-26 北京爱上地科技有限公司 A kind of aqueous double-component electric heating ink and preparation method thereof
CN113208115A (en) * 2021-03-18 2021-08-06 南昌大学 Probiotic microcapsule and preparation method thereof

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11258998A (en) * 1998-03-13 1999-09-24 Konica Corp Adhesive label, film with lens having the same, and processing method of the same film with lens
CN103436074A (en) * 2013-08-05 2013-12-11 南昌大学 Preparation method of water-based conductive ink
CN103628358A (en) * 2013-08-10 2014-03-12 广东冠豪高新技术股份有限公司 Double-color-line anti-counterfeiting paper and production method thereof
CN106998597A (en) * 2017-03-20 2017-08-01 北京旭碳新材料科技有限公司 Electric heating device and device and preparation method thereof
CN106883679A (en) * 2017-03-27 2017-06-23 国网山东省电力公司威海供电公司 A kind of distribution line temperature-sensitive paster
CN106883684A (en) * 2017-04-01 2017-06-23 北京创新爱尚家科技股份有限公司 Graphene three-dimensional composite water soluble electric heating ink and preparation method thereof
CN107502067A (en) * 2017-08-31 2017-12-22 王雨生 A kind of high temperature sintering heating electrically conductive ink and preparation method thereof
CN108084823A (en) * 2017-12-18 2018-05-29 中南大学 A kind of electric-heating coatings and its preparation method and application
CN108160014A (en) * 2018-02-07 2018-06-15 南昌大学 It is a kind of to prepare double casing microcapsules device
CN109337448A (en) * 2018-10-17 2019-02-15 江苏扬中印刷有限公司 A kind of electrically conductive ink and preparation method thereof
CN110054930A (en) * 2019-03-12 2019-07-26 北京爱上地科技有限公司 A kind of aqueous double-component electric heating ink and preparation method thereof
CN113208115A (en) * 2021-03-18 2021-08-06 南昌大学 Probiotic microcapsule and preparation method thereof

Similar Documents

Publication Publication Date Title
CN103113786B (en) Graphene conductive ink and preparation method thereof
CN101429359A (en) Water-based plastic composite inner-printing ink
WO2007111996A2 (en) Conducting polymer ink
CN109682508A (en) A kind of sensitive ink material and pliable pressure thin film sensor and preparation method thereof
CN109741855A (en) A kind of graphene conductive slurry and preparation method thereof applied to Electric radiant Heating Film
CN110467846A (en) A kind of preparation method of oiliness electric heating conversion ink and prepared ink
CN106634183A (en) Waterborne polyurethane gravure fluorescent ink and preparation method thereof
CN109401443A (en) A kind of graphene coated copper nano-particle composite material conductive ink and preparation method thereof
CN106170835B (en) Printed electronic copper paste composition
CN113897095A (en) Thermochromic ink and preparation method thereof
CN103131256B (en) Manufacturing method of soy-protein-type water-based decorative paper printing ink
CN111724672A (en) Anti-counterfeit label based on microcapsule structure
CN105400281B (en) A kind of water-based UV electrically conductive inks
CN111714380A (en) Heating mask
CN106590175A (en) Bacteriostatic and antiseptic waterborne polyurethane gravure fluorescent ink and preparation method thereof
CN106634218A (en) Carbon quantum dot modified waterborne polyurethane gravure fluorescent ink and preparation method thereof
CN111798738B (en) Dynamic anti-counterfeit label
CN104893426B (en) A kind of cigarette anti-counterfeit ink
CN106675182A (en) Long-acting and stable water-base polyurethane gravure printing fluorescent ink and preparation method thereof
CN111785157A (en) Anti-counterfeit label
CN109385144A (en) Water-based nano-silver conductive ink for textiles
Zhang et al. Preparation and characterization of the thermochromic microcapsules and temperature-indicating hydrogel
CN106700732A (en) Polymerization inhibition flowing type waterborne polyurethane gravure printing fluorescent ink and preparation method thereof
CN111887539B (en) Heating insole
CN106634186A (en) Steaming-resistant and boiling-resistant waterborne polyurethane gravure fluorescent ink and preparation method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20200929