CN113717653B - Weather-resistant coating for adhesive film on surface layer of bank card and preparation method thereof - Google Patents
Weather-resistant coating for adhesive film on surface layer of bank card and preparation method thereof Download PDFInfo
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- CN113717653B CN113717653B CN202111192072.7A CN202111192072A CN113717653B CN 113717653 B CN113717653 B CN 113717653B CN 202111192072 A CN202111192072 A CN 202111192072A CN 113717653 B CN113717653 B CN 113717653B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
- C09J175/08—Polyurethanes from polyethers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/29—Laminated material
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Abstract
The invention discloses a weather-resistant coating for a surface layer adhesive film of a bank card and a preparation method thereof, wherein the bank card sequentially comprises a first PVC film layer, a first coating, a first printing ink layer, a first PVC card base layer, a second printing ink layer, a second coating, a second PVC film layer and a magnetic stripe layer from top to bottom; the first coating and the second coating respectively comprise weather-resistant polyurethane resin and an auxiliary agent; the addition ratio of the weather-resistant polyurethane resin to the auxiliary agent is 3:7-1:1 in parts by weight; the auxiliary agent is polyamide wax or polyolefin wax. The invention aims to solve the problem of insufficient weather resistance of a coating, ensure the stability of the quality of a bank card of a card manufacturing enterprise, and ensure the 90-degree peeling strength of a tape adhesive film stably for a long time.
Description
Technical Field
The invention belongs to the technical field of coatings, and particularly relates to a weather-resistant coating for a surface layer adhesive film of a bank card.
Background
The prior adhesive film has high initial peeling strength, but the peeling strength is fast in decay along with the extension of time, and finally is easy to peel off from a printing ink layer, and even automatically drops off. The requirement of banks on card-making enterprises is to ensure that the quality of the bank cards is not less than 10 years. The Jiangsu Hengbao stock limited company (larger domestic card manufacturing enterprises) places the finished cards in a warehouse, banks require delivery after 2 years, and when delivery inspection is carried out according to the process, the peeling strength of the test adhesive film is completely not up to standard, and the adhesive film can be peeled off by hands, so that great economic loss is caused; meanwhile, due to the influence on the delivery period, the cooperation with banks is problematic, and similar losses are also immeasurable.
The reason that the peeling strength of the existing adhesive film with adhesive film declines relatively quickly is that water directly participates in the aging reaction of the coating, so that the peeling strength is greatly reduced due to the hydrolysis of the polyurethane coating, and the long-acting property of the peeling strength can not be effectively ensured.
Disclosure of Invention
The invention mainly solves the technical problem of providing a weather-resistant coating for a surface layer adhesive film of a bank card and a preparation method thereof, and aims to solve the problem of insufficient weather resistance of the coating, ensure the stability of the quality of the bank card of a card manufacturing enterprise, and ensure the 90-degree peeling strength of the adhesive film in a long-acting and stable manner.
In order to solve the technical problems, the invention adopts a technical scheme that: the weather-resistant coating for the adhesive film on the surface layer of the bank card comprises a first PVC film layer, a first coating, a first printing ink layer, a first PVC card base layer, a second printing ink layer, a second coating, a second PVC film layer and a magnetic stripe layer from top to bottom in sequence;
the first coating and the second coating respectively comprise weather-resistant polyurethane resin and an auxiliary agent; the addition ratio of the weather-resistant polyurethane resin to the auxiliary agent is 3:7-1:1 in parts by weight;
the auxiliary agent is polyamide wax or polyolefin wax;
the total thickness of the first PVC film layer, the first coating layer, the first printing ink layer, the first PVC card base layer, the second printing ink layer, the second coating layer and the second PVC film layer is 0.1-0.2mm.
Further, the weather-resistant polyurethane resin is a polyether polyurethane resin.
Further, the first coating layer also comprises graphene and carbon nanotubes.
Further, when the first coating layer further includes graphene and carbon nanotubes, the preparation method of the first coating layer material includes: and uniformly mixing the graphene powder, the carbon nano tube, the weather-resistant polyurethane resin and the auxiliary agent, and ball milling.
Further, when graphene and carbon nanotubes are also included in the first coating layer, the auxiliary agent includes an antifoaming agent. The defoamer comprises any one or more than two of solvent-type modified organic silicon, polyether-modified carbon material and water-based modified organic silicon.
Further, the mass ratio of the graphene powder to the weather-resistant polyurethane resin in the first coating is (1-2) 100, the mass ratio of the carbon nano tube to the weather-resistant polyurethane resin is (3-4) 100, and the mass ratio of the defoaming agent to the weather-resistant polyurethane resin is (1-3) 100.
Further, the temperature of the ball milling is 30-45 ℃, the speed is 1200-1500r/min, and the time is 1-2h.
Further, the carbon nanotubes comprise single-wall carbon nanotubes or multi-wall carbon nanotubes, the OD is less than 8nm, and the length is 20-100nm.
Further, the weather-resistant polyurethane resin is a two-component aqueous polyurethane resin and comprises a polyol containing hydroxyl and an aqueous curing agent containing isocyanate.
Further, the polyols include graft polyether polyols and polybutadiene diols; the aqueous curing agent comprises hexamethylene diisocyanate and isophorone diisocyanate.
Further, the weight addition ratio of the grafted polyether polyol to the polybutadiene diol to the hexamethylene diisocyanate to the isophorone diisocyanate is 75-85:15-25:1-5:0.5-1.5.
A preparation method of a weather-resistant coating for a surface layer adhesive film of a bank card comprises the following steps:
s1, placing weather-resistant polyurethane resin into an ultrasonic device, and sufficiently oscillating by ultrasonic waves to uniformly disperse the polyurethane resin;
(2) Adding the dispersion liquid obtained in the step S1 and the auxiliary agent into a stirring device, and fully and uniformly stirring;
(3) And (2) adding a curing agent into the dispersion liquid obtained in the step (S2), fully and uniformly stirring, and then drying to obtain the first coating and/or the second coating.
Further, the curing agent is a polyamide curing agent or an acrylic curing agent.
Further, the stirring device comprises:
a vertical stirring kettle;
the stirring base is provided with a rotating groove at the top end, and the vertical stirring kettle is placed in the rotating groove;
the stirring motor is arranged in the stirring base;
the stirring shaft is arranged at the output end of the stirring motor, and the stirring shaft is far away from the stirring motor end and stretches into the vertical stirring kettle from the bottom end of the vertical stirring kettle;
the stirring rods are uniformly distributed on the stirring shafts and are positioned in the vertical stirring kettle;
the centrifugal rods are circumferentially hinged to the stirring shaft, reset torsion springs are arranged at the hinged ends of the centrifugal rods, and the centrifugal rods are positioned in the rotating grooves;
and the centrifugal ball is arranged on the centrifugal rod far away from the stirring shaft end, and is propped against the bottom end of the vertical stirring kettle.
Further, the stirring device further comprises:
the annular chamber is arranged in the stirring base, the annular chamber is positioned below the rotating groove, and the stirring shaft penetrates through the annular chamber;
the annular seat is arranged in the annular chamber and sleeved on the stirring shaft;
the annular liquid inlet chamber is arranged in the annular seat;
the liquid inlet holes are oppositely arranged at the outer ring end of the annular seat, and are communicated with the annular liquid inlet chamber;
the liquid outlet groove is circumferentially formed in the inner ring end of the annular seat, and the bottom end of the liquid outlet groove is communicated with the annular liquid inlet chamber;
the two liquid inlet channels are symmetrically arranged in the stirring base by taking the stirring shaft as a center, one end of each liquid inlet channel is communicated with the side end of the stirring base, and the other end of each liquid inlet channel is communicated with the annular chamber and is connected with the liquid inlet hole;
the annular plug is arranged at the bottom end of the vertical stirring kettle and sleeved on the stirring shaft;
the liquid outlet channels are arranged in the stirring shaft, the quantity of the liquid outlet channels is equal to that of the liquid inlet channels, one end of each liquid outlet channel is communicated with the liquid outlet groove, and the other end of each liquid outlet channel is communicated with the inside of the vertical stirring kettle;
the U-shaped grooves are symmetrically formed in the top end of the stirring base by taking the rotating grooves as centers, and flowing liquid is poured into the U-shaped grooves;
the first plug body is arranged in the U-shaped groove and is connected with the side end of the vertical stirring kettle through a first supporting rod;
the second plug body is arranged in the U-shaped groove, and the flowing liquid is positioned between the first plug body and the second plug body;
the lifting groove is formed in the inner wall of the U-shaped groove and is close to the second plug body;
the lifting block is connected in the lifting groove in a sliding manner and is connected with the second plug body through a second supporting rod;
the top block mounting grooves are formed in the bottom ends of the lifting grooves at equal intervals;
the jacking block is arranged in the jacking block mounting groove through a first spring, the jacking block is arranged in a hemispherical shape far away from the first spring end, and the jacking block extends into the lifting groove far away from the first spring end;
the lifting chamber is arranged in the stirring base and is close to the top of the liquid inlet channel;
the lifting plate is arranged in the lifting chamber;
one end of the connecting rope extends into the lifting chamber and is connected with the lifting plate, and the other end of the connecting rope extends into the top block mounting groove and is arranged through each top block;
the baffle is arranged at the end, far away from the connecting rope, of the lifting plate, and extends into the liquid inlet channel;
the second springs are symmetrically arranged at the ends, close to the baffle, of the lifting plate by taking the baffle as a center, and the second springs are far away from the ends of the lifting plate and are connected with the inner bottom of the lifting chamber.
Further, the stirring device further comprises:
the turbine installation chamber is arranged in the stirring base and is close to the bottom of the liquid inlet channel;
the turbine installation frame is arranged in the turbine installation chamber and extends into the liquid inlet channel;
a turbine mounted on the turbine mount via a first shaft;
the two third springs are symmetrically arranged at the top end of the turbine mounting frame by taking the turbine as a center, and the third springs are connected with the top inside the turbine mounting frame away from the turbine mounting frame end;
the second rotating shaft penetrates through the bottom end of the turbine mounting frame;
the meshed pair of first bevel gears are arranged in the turbine installation chamber, one of the first bevel gears is installed on the first rotating shaft, and the other first bevel gear is installed at the top end of the second rotating shaft;
the rack is vertically arranged at the bottom end of the turbine mounting frame;
the power chamber is arranged in the stirring base and is close to the turbine installation chamber;
one end of the third rotating shaft extends into the turbine installation chamber, and the other end of the third rotating shaft extends into the power chamber;
one end of the fourth rotating shaft extends into the turbine installation chamber, the other end of the fourth rotating shaft extends into the power chamber, and the fourth rotating shaft is arranged in parallel with the third rotating shaft;
the two driving pulleys are arranged in the power chamber, one driving pulley is arranged on the third rotating shaft, and the other driving pulley is arranged on the fourth rotating shaft;
the driving belt is arranged in the power chamber and sleeved on the two driving belt wheels;
the driving motor is arranged in the power chamber, and the output end of the driving motor is connected with the fourth rotating shaft;
the rotating ratchet wheel is arranged in the turbine installation chamber and is installed on the fourth rotating shaft, and the rotating ratchet wheel is matched with the rack;
the meshed pair of second bevel gears are arranged in the turbine installation chamber, one of the second bevel gears is installed on the third rotating shaft, and the other second bevel gear is installed at the bottom end of the second rotating shaft.
The beneficial effects of the invention are at least as follows:
1. the weather-resistant polyurethane resin can be polyether polyurethane resin, and the polyester polyurethane resin has higher water absorption due to the fact that the polyester polyurethane resin contains-COOR ester groups, can absorb water in the air after being exposed in the air for a long time, and can undergo slow hydrolysis reaction to form carboxylic acid and alcohol after moisture absorption. The polyether polyurethane resin contains-O-ether bond and cannot generate hydrolysis reaction with moisture in the air;
2. the weather-resistant polyurethane resin can also be selected from a two-component waterborne polyurethane resin, and comprises a polyol containing hydroxyl and a waterborne curing agent containing isocyanate.
3. According to the invention, the graphene and the carbon nano tube are added into the specific coating, and the coating material is processed through specific operation, so that the hardness and the wear resistance of the coating are further increased, and the anti-demagnetization agent has a certain preventive effect on the anti-demagnetization of the bank card, which is equivalent to the fact that the non-continuous fiber reinforced material prepared by the specific formula and the method enhances the performance of the film material, and other effects are brought on the premise of enhancing the mechanical property.
Drawings
FIG. 1 is a schematic view of the overall construction of a bank card of the present invention;
FIG. 2 is a schematic structural view of the stirring device of the present invention;
fig. 3 is an enlarged view of reference a in fig. 2;
fig. 4 is an enlarged view of reference B in fig. 2.
In the figure: 1. a first PVC film layer; 2. a first coating; 3. a first layer of printing ink; 4. a first PVC card substrate; 5. a second PVC card base layer; 6. a second layer of printing ink; 7. a second coating; 8. a second PVC film layer; 9. a magnetic stripe layer; 10. a vertical stirring kettle; 11. a stirring base; 12. a rotating groove; 13. a stirring shaft; 14. a centrifugal rod; 15. an annular chamber; 16. a stirring motor; 17. an annular seat; 18. an annular liquid inlet chamber; 19. a liquid inlet hole; 20. a liquid outlet groove; 21. a liquid inlet channel; 22. an annular plug; 23. a liquid outlet channel; a u-shaped groove; 25. a first plug body; 26. a second plug body; 27. a lifting groove; 28. a lifting block; 29. a top block mounting groove; 30.
a top block; 31. a lifting chamber; 32. a lifting plate; 33. a connecting rope; 34. a baffle; 35. a turbine installation chamber; 36.
a turbine mounting frame; 37. a turbine; 38. a first helical gear; 39. a rack; 40. a power chamber; 41. a transmission belt wheel; 42. a driving motor; 43. rotating the ratchet wheel; 44. and a second helical gear.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present invention.
Example 1: as shown in figure 1, the weather-resistant coating for the adhesive film on the surface layer of the bank card comprises a first PVC film layer 1, a first coating 2, a first printing ink layer 3, a first PVC card base layer 4, a second PVC card base layer 5, a second printing ink layer 6, a second coating 7, a second PVC film layer 8 and a magnetic stripe layer 9 from top to bottom in sequence;
the first coating layer 2 and the second coating layer 6 respectively comprise weather-resistant polyurethane resin and an auxiliary agent; the addition ratio of the weather-resistant polyurethane resin to the auxiliary agent is 3:7 in parts by weight.
The auxiliary agent is polyolefin wax;
the total thickness of the first PVC film layer, the first coating layer, the first printing ink layer, the first PVC card base layer, the second printing ink layer, the second coating layer and the second PVC film layer is 0.1mm.
The weather-resistant polyurethane resin is polyether polyurethane resin, and the polyester polyurethane resin has higher water absorption due to the fact that the polyester polyurethane resin contains-COOR ester groups, can absorb water in the air after being exposed in the air for a long time, and is subjected to slow hydrolysis reaction to form carboxylic acid and alcohol after being absorbed in the water. The polyether polyurethane resin contains-O-ether bond and does not generate hydrolysis reaction with moisture in air.
A preparation method of a weather-resistant coating for a surface layer adhesive film of a bank card comprises the following steps:
s1, placing weather-resistant polyurethane resin into an ultrasonic device, and sufficiently oscillating by ultrasonic waves to uniformly disperse the polyurethane resin;
(2) Adding the dispersion liquid obtained in the step S1 and the auxiliary agent into a stirring device, and fully and uniformly stirring;
(3) And (2) adding a curing agent into the dispersion liquid obtained in the step (S2), fully and uniformly stirring, and then drying to obtain the first coating and/or the second coating.
The curing agent is an acrylic acid curing agent.
Example 2: the remainder of the weather-resistant coating for the adhesive film on the surface layer of the bank card is the same as in example 1, except that:
the addition ratio of the weather-resistant polyurethane resin to the auxiliary agent is 1:1.
The auxiliary agent is polyamide wax;
the total thickness of the first PVC film layer, the first coating layer, the first printing ink layer, the first PVC card base layer, the second printing ink layer, the second coating layer and the second PVC film layer is 0.2mm.
The weather-resistant polyurethane resin is a two-component waterborne polyurethane resin and comprises a polyol containing hydroxyl and a waterborne curing agent containing isocyanate. The two-component waterborne polyurethane has the advantages of high crosslinking density, high hardness of the coating after film formation, good wear resistance, strong adhesive force and excellent water resistance.
The polyols include graft polyether polyols and polybutadiene diols; the aqueous curing agent comprises hexamethylene diisocyanate and isophorone diisocyanate.
The weight addition ratio of the grafted polyether polyol to the polybutadiene diol to the hexamethylene diisocyanate to the isophorone diisocyanate is 80:20:3:1.
The curing agent is polyamide curing agent.
Example 3: the remainder of the weather-resistant coating for the adhesive film on the surface layer of the bank card is the same as in example 1, except that:
the addition ratio of the weather-resistant polyurethane resin to the auxiliary agent is 3:5.
The auxiliary agent is polyolefin wax;
the total thickness of the first PVC film layer, the first coating layer, the first printing ink layer, the first PVC card base layer, the second printing ink layer, the second coating layer and the second PVC film layer is 0.14mm.
The weather-resistant polyurethane resin is a two-component waterborne polyurethane resin and comprises a polyol containing hydroxyl and a waterborne curing agent containing isocyanate. The two-component waterborne polyurethane has the advantages of high crosslinking density, high hardness of the coating after film formation, good wear resistance, strong adhesive force and excellent water resistance.
The polyols include graft polyether polyols and polybutadiene diols; the aqueous curing agent comprises hexamethylene diisocyanate and isophorone diisocyanate.
The weight addition ratio of the grafted polyether polyol to the polybutadiene diol to the hexamethylene diisocyanate to the isophorone diisocyanate is 75:15:1:0.5.
The curing agent is an acrylic acid curing agent.
Example 4: the remainder of the weather-resistant coating for the adhesive film on the surface layer of the bank card is the same as in example 1, except that:
the addition ratio of the weather-resistant polyurethane resin to the auxiliary agent is 1:2.
The auxiliary agent is polyamide wax;
the total thickness of the first PVC film layer, the first coating layer, the first printing ink layer, the first PVC card base layer, the second printing ink layer, the second coating layer and the second PVC film layer is 0.16mm.
The weather-resistant polyurethane resin is a two-component waterborne polyurethane resin and comprises a polyol containing hydroxyl and a waterborne curing agent containing isocyanate. The two-component waterborne polyurethane has the advantages of high crosslinking density, high hardness of the coating after film formation, good wear resistance, strong adhesive force and excellent water resistance.
The polyols include graft polyether polyols and polybutadiene diols; the aqueous curing agent comprises hexamethylene diisocyanate and isophorone diisocyanate.
The weight addition ratio of the grafted polyether polyol to the polybutadiene diol to the hexamethylene diisocyanate to the isophorone diisocyanate is 85:25:5:1.5.
The curing agent is polyamide curing agent.
Example 5: the remainder of the weather-resistant coating for the adhesive film on the surface layer of the bank card is the same as in example 1, except that:
the first coating layer of the embodiment further comprises graphene and carbon nanotubes.
The auxiliary agent comprises polyamide wax, and the addition ratio of the weather-resistant polyurethane resin to the polyamide wax is 1:1.
The auxiliary agent also comprises an antifoaming agent. The defoamer comprises solvent-modified silicone.
The mass ratio of the graphene powder to the weather-resistant polyurethane resin in the first coating is 2:100, the mass ratio of the carbon nano tube to the weather-resistant polyurethane resin is 4:100, and the mass ratio of the defoaming agent to the weather-resistant polyurethane resin is 3:100.
The preparation method of the first coating material comprises the following steps: and uniformly mixing the graphene powder, the carbon nano tube, the weather-resistant polyurethane resin and the auxiliary agent, and ball milling.
The ball milling temperature is 30-45 ℃, the speed is 1200-1500r/min, and the time is 2h.
The carbon nano tube comprises a multi-wall carbon nano tube, the OD is smaller than 8nm, and the length is 80-100nm.
The total thickness of the first PVC film layer, the first coating layer, the first printing ink layer, the first PVC card base layer, the second printing ink layer, the second coating layer and the second PVC film layer is 0.2mm.
The weather-resistant polyurethane resin is a two-component waterborne polyurethane resin and comprises a polyol containing hydroxyl and a waterborne curing agent containing isocyanate. The two-component waterborne polyurethane has the advantages of high crosslinking density, high hardness of the coating after film formation, good wear resistance, strong adhesive force and excellent water resistance.
The polyols include graft polyether polyols and polybutadiene diols; the aqueous curing agent comprises hexamethylene diisocyanate and isophorone diisocyanate.
The weight addition ratio of the grafted polyether polyol to the polybutadiene diol to the hexamethylene diisocyanate to the isophorone diisocyanate is 80:20:3:1.
The curing agent is polyamide curing agent.
The coatings of examples 1-4 were made into a top film for a bank card and peel strength was tested at constant temperature (e.g., 35 ℃) under different humidity conditions with the commercial top films for a bank card (comparative examples 1 and 2), and the results are shown in table 1:
the peel strength is measured according to GB/T2792-2014 standard.
TABLE 1
As shown in the results of Table 1, the adhesive film on the surface layer of the bank card prepared by the weather-resistant coating of the invention has better peeling strength than the adhesive film on the surface layer of the bank card sold in the prior art under different humidity environments. In addition, the film hardness and the wear resistance obtained in the example 5 are superior to those of other examples of the invention, and the chip card adopting the film in the example 5 is not easy to demagnetize under repeated tests.
Example 6: the preparation method of the weather-resistant coating for the adhesive film on the surface layer of the bank card is the same as that of the example 1, except that: the stirring device comprises:
a vertical stirred tank 10;
the stirring device comprises a stirring base 11, wherein a rotating groove 12 is formed in the top end of the stirring base 11, and the vertical stirring kettle 10 is placed in the rotating groove 12;
a stirring motor 16, wherein the stirring motor 16 is installed in the stirring base 11;
the stirring shaft 13 is arranged at the output end of the stirring motor 16, and the stirring shaft 13 is far away from the stirring motor 16 and extends into the vertical stirring kettle 10 from the bottom end of the vertical stirring kettle 10;
the stirring rods are uniformly distributed on the stirring shaft 13 and are positioned in the vertical stirring kettle 10;
the centrifugal rods 14 are circumferentially hinged to the stirring shaft 13, reset torsion springs are arranged at the hinged ends of the centrifugal rods 14, and the centrifugal rods 14 are positioned in the rotating grooves 12;
and the centrifugal ball is arranged at the end, away from the stirring shaft 13, of the centrifugal rod 14, and is propped against the bottom end of the vertical stirring kettle 10.
In this embodiment, the stirring device further includes:
the annular chamber 15 is arranged in the stirring base 11, the annular chamber 15 is positioned below the rotating groove 12, and the stirring shaft 13 penetrates through the annular chamber 15;
the annular seat 17 is arranged in the annular chamber 15, and the annular seat 17 is sleeved on the stirring shaft 13;
an annular liquid inlet chamber 18, wherein the annular liquid inlet chamber 18 is arranged in the annular seat 17;
the liquid inlet holes 19 are formed in the outer ring end of the annular seat 17 in opposite directions, and the liquid inlet holes 19 are communicated with the annular liquid inlet chamber 18;
the liquid outlet groove 20 is formed in the inner ring end of the annular seat 17 at the periphery Xiang Kai of the liquid outlet groove 20, and the bottom end of the liquid outlet groove 20 is communicated with the annular liquid inlet chamber 18;
the liquid inlet channels 21 are symmetrically arranged in the stirring base 11 by taking the stirring shaft 13 as a center, one end of each liquid inlet channel 21 is communicated with the side end of the stirring base 11, and the other end of each liquid inlet channel 21 is communicated in the annular chamber 15 and is connected with the liquid inlet hole 19;
the annular plug 22 is arranged at the bottom end of the vertical stirring kettle 10, and the annular plug 22 is sleeved on the stirring shaft 13;
the liquid outlet channels 23 are arranged in the stirring shaft 13, the number of the liquid outlet channels 23 is equal to that of the liquid inlet channels 21, one end of the liquid outlet channels 23 is communicated with the liquid outlet groove 20, and the other end of the liquid outlet channels 23 is communicated with the inside of the vertical stirring kettle 10;
the U-shaped grooves 24 are symmetrically formed in the top end of the stirring base 11 by taking the rotating grooves 12 as centers, and flowing liquid is poured into the U-shaped grooves 24;
the first plug body 25 is arranged in the U-shaped groove 24, and the first plug body 25 is connected with the side end of the vertical stirring kettle 10 through a first supporting rod;
a second plug 26, wherein the second plug 26 is disposed in the U-shaped groove 24, and the flowing liquid is located between the first plug 25 and the second plug 26;
the lifting groove 27 is formed in the inner wall of the U-shaped groove 24, and the lifting groove 27 is arranged close to the second plug body 26;
the lifting block 28 is slidably connected in the lifting groove 27, and the lifting block 28 is connected with the second plug body 26 through a second supporting rod;
the top block mounting grooves 29 are formed in the bottom ends of the lifting grooves 27 at equal intervals, and the top block mounting grooves 29 are formed in the bottom ends of the lifting grooves 27 at equal intervals;
the top block 30 is installed in the top block installation groove 29 through a first spring, the top block 30 is arranged in a hemispherical shape away from the first spring end, and the top block 30 extends into the lifting groove 27 away from the first spring end;
the lifting chamber 31 is arranged in the stirring base 11, and the lifting chamber 31 is arranged close to the top of the liquid inlet channel 21;
a lifting plate 32, wherein the lifting plate 32 is arranged in the lifting chamber 31;
a connecting rope 33, wherein one end of the connecting rope 33 extends into the lifting chamber 31 and is connected with the lifting plate 32, and the other end of the connecting rope 33 extends into the top block mounting groove 29 and is arranged through each top block 30;
the baffle 34 is arranged at the end, far away from the connecting rope 33, of the lifting plate 32, and the baffle 34 extends into the liquid inlet channel 21;
and the two second springs are symmetrically arranged at the end, close to the baffle 34, of the lifting plate 32 by taking the baffle 34 as a center, and the end, far away from the lifting plate 32, of the second springs is connected with the inner bottom of the lifting chamber 31.
In this embodiment, the stirring device further includes:
the turbine installation chamber 35, wherein the turbine installation chamber 35 is arranged in the stirring base 11, and the turbine installation chamber 35 is arranged near the bottom of the liquid inlet channel 21;
a turbine mounting frame 36, wherein the turbine mounting frame 36 is arranged in the turbine mounting chamber 35, and the turbine mounting frame 36 extends into the liquid inlet channel 21;
a turbine 37, the turbine 37 being mounted on the turbine mounting 36 by a first shaft;
the two third springs are symmetrically arranged at the top end of the turbine mounting frame 36 by taking the turbine 37 as a center, and the ends of the third springs far away from the turbine mounting frame 36 are connected with the inner top of the turbine mounting chamber 35;
the second rotating shaft penetrates through the bottom end of the turbine mounting frame 36;
a pair of meshed first bevel gears 38, wherein the first bevel gears 38 are arranged in the turbine installation chamber 35, one of the first bevel gears 38 is installed on the first rotating shaft, and the other first bevel gear 38 is installed on the top end of the second rotating shaft;
a rack 39, wherein the rack 39 is vertically installed at the bottom end of the turbine mounting frame 36;
a power chamber 40, wherein the power chamber 40 is arranged in the stirring base 11, and the power chamber 40 is arranged close to the turbine installation chamber 35;
a third rotating shaft, one end of which extends into the turbine installation chamber 35, and the other end of which extends into the power chamber 40;
a fourth rotating shaft, one end of which extends into the turbine installation chamber 35, and the other end of which extends into the power chamber 40, the fourth rotating shaft being arranged in parallel with the third rotating shaft;
a driving pulley 41, wherein two driving pulleys 41 are arranged in the power chamber 40, one driving pulley 41 is arranged on the third rotating shaft, and the other driving pulley 41 is arranged on the fourth rotating shaft;
the driving belt is arranged in the power chamber 40 and sleeved on the two driving belt wheels 41;
the driving motor 42 is installed in the power chamber 40, and the output end of the driving motor 42 is connected with the fourth rotating shaft;
a rotating ratchet wheel 43, wherein the rotating ratchet wheel 43 is arranged in the turbine mounting chamber 35, the rotating ratchet wheel 43 is mounted on the fourth rotating shaft, and the rotating ratchet wheel 43 is matched with the rack 39;
and a pair of meshed second bevel gears 44, wherein the second bevel gears 38 are arranged in the turbine installation chamber 35, one of the second bevel gears 44 is installed on the third rotating shaft, and the other second bevel gear 44 is installed at the bottom end of the second rotating shaft.
The working principle and beneficial effects of the embodiment are as follows:
the dispersion and the auxiliary agent are added into the vertical stirring kettle 10, the stirring motor 16 works, the stirring shaft 13 arranged at the output end of the stirring motor 16 is driven to rotate in the vertical stirring kettle 10, the stirring rod connected with the stirring shaft 13 completes uniform stirring of the dispersion and the auxiliary agent, the curing agent is fed into the liquid inlet channel 21, as the rotating speed of the stirring motor 16 increases, the centrifugal balls are driven to rotate in the direction close to the bottom end of the rotating groove 12 under the centrifugal force action, the centrifugal rods 14 connected with the centrifugal balls are driven to rotate in the direction close to the bottom end of the rotating groove 12, the vertical stirring kettle 10 descends in the rotating groove 12, the vertical stirring kettle 10 drives the first plug body 25 to descend in the U-shaped groove 24 through the first supporting rod, the first plug body 25 extrudes the second plug body 26 through flowing liquid to move in the same direction in the U-shaped groove 24, the second plug body 26 drives the lifting block 28 to slide upwards in the lifting groove 27 through the second supporting rod, the lifting block 28 sequentially abuts against the lifting block 30 to retract into the lifting block mounting groove 29, the first spring contracts, the connecting rope 33 is pulled by the lifting block 30, the lifting block 32 is driven to be positioned in the lifting chamber 31, and the lifting plate 32 connected with the connecting rope is pulled to extend in the direction close to the bottom end of the rotating groove 12, the vertical stirring motor 12 descends in the direction close to the rotating groove 12, the first plug body is driven to the first plug body 25 moves in the first plug body 25 to move in the same direction in the U-shaped groove 24, the same direction as required direction as the second plug body 26 moves in the U-shaped groove is driven to move in the U-shaped groove 24, the U-shaped groove is completely moves in the U-shaped groove 24, the stirring groove is completely, the second plug body 26 moves in the liquid is extruded into the liquid is completely, the liquid is extruded into the liquid channel 19, the liquid is completely enters the liquid into the annular groove 19, and the liquid channel is completely, the liquid is completely enters the liquid is completely, and the liquid is completely separated from the liquid is completely, and is completely enters the additive, and is completely, is, the third rotating shaft connected with the transmission belt rotates in the turbine installation chamber 35, the rotating ratchet wheel 43 arranged on the fourth rotating shaft drives the rack 39 which is connected with the rack in an adapting way, the turbine installation frame 36 which is connected with the rack 39, and the turbine 37 which is connected with the turbine installation frame 36 to extend into the liquid inlet channel 21, the third spring contracts, the second bevel gear 44 is meshed, and the first rotating shaft is driven to rotate through the second rotating shaft and the first bevel gear 38, and the first rotating shaft drives the turbine 37 to rotate, so that the flow rate of the curing agent in the liquid inlet channel 21 is increased.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the present invention and the accompanying drawings, or direct or indirect application in other related technical fields, are included in the scope of the present invention.
Claims (2)
1. The preparation method of the weather-resistant coating for the adhesive film on the surface layer of the bank card is used for the weather-resistant coating for the adhesive film on the surface layer of the bank card, and the bank card sequentially comprises a first PVC film layer, a first coating, a first printing ink layer, a first PVC card base layer, a second printing ink layer, a second coating, a second PVC film layer and a magnetic stripe layer from top to bottom;
the first coating and the second coating respectively comprise weather-resistant polyurethane resin and an auxiliary agent; the addition ratio of the weather-resistant polyurethane resin to the auxiliary agent is 3:7-1:1 in parts by weight;
the auxiliary agent is polyamide wax or polyolefin wax;
the total thickness of the first PVC film layer, the first coating layer, the first printing ink layer, the first PVC card base layer, the second printing ink layer, the second coating layer and the second PVC film layer is 0.1-0.2mm, and the PVC film is characterized in that: the method comprises the following steps:
s1, placing weather-resistant polyurethane resin into an ultrasonic device, and sufficiently oscillating by ultrasonic waves to uniformly disperse the polyurethane resin;
(2) Adding the dispersion liquid obtained in the step S1 and the auxiliary agent into a stirring device, and fully and uniformly stirring;
(3) Adding a curing agent into the dispersion liquid obtained in the step S2, fully and uniformly stirring, and then drying to obtain a first coating and/or a second coating;
the stirring device comprises:
a vertical stirring kettle (10);
the stirring device comprises a stirring base (11), wherein a rotating groove (12) is formed in the top end of the stirring base (11), and the vertical stirring kettle (10) is placed in the rotating groove (12);
a stirring motor (16), wherein the stirring motor (16) is arranged in the stirring base (11);
the stirring shaft (13), the stirring shaft (13) is arranged at the output end of the stirring motor (16), and the stirring shaft (13) is far away from the stirring motor (16) and extends into the vertical stirring kettle (10) from the bottom end of the vertical stirring kettle (10);
the stirring rods are uniformly distributed on the stirring shaft (13) and are positioned in the vertical stirring kettle (10);
the centrifugal rods (14) are circumferentially hinged to the stirring shaft (13), reset torsion springs are arranged at the hinged ends of the centrifugal rods (14), and the centrifugal rods (14) are located in the rotating grooves (12);
the centrifugal ball is arranged at the end, far away from the stirring shaft (13), of the centrifugal rod (14) and is propped against the bottom end of the vertical stirring kettle (10);
the stirring device further includes:
the annular chamber (15) is arranged in the stirring base (11), the annular chamber (15) is positioned below the rotating groove (12), and the stirring shaft (13) penetrates through the annular chamber (15);
the annular seat (17) is arranged in the annular chamber (15), and the annular seat (17) is sleeved on the stirring shaft (13);
an annular liquid inlet chamber (18), wherein the annular liquid inlet chamber (18) is arranged in the annular seat (17);
the liquid inlet holes (19), two liquid inlet holes (19) are oppositely arranged at the outer ring end of the annular seat (17), and the liquid inlet holes (19) are communicated with the annular liquid inlet chamber (18);
the liquid outlet groove (20) is circumferentially formed in the inner ring end of the annular seat (17), and the bottom end of the liquid outlet groove (20) is communicated with the annular liquid inlet chamber (18);
the two liquid inlet channels (21) are symmetrically arranged in the stirring base (11) by taking the stirring shaft (13) as a center, one end of each liquid inlet channel (21) is communicated with the side end of the stirring base (11), and the other end of each liquid inlet channel (21) is communicated in the annular chamber (15) and is connected with the liquid inlet hole (19);
the annular plug (22) is arranged at the bottom end of the vertical stirring kettle (10), and the annular plug (22) is sleeved on the stirring shaft (13);
the liquid outlet channels (23) are arranged in the stirring shaft (13), the liquid outlet channels (23) are equal to the liquid inlet channels (21), one ends of the liquid outlet channels (23) are communicated with the liquid outlet grooves (20), and the other ends of the liquid outlet channels (23) are communicated with the inside of the vertical stirring kettle (10);
the U-shaped grooves (24) are symmetrically formed in the top end of the stirring base (11) by taking the rotating grooves (12) as centers, and flowing liquid is poured into the U-shaped grooves (24);
the first plug body (25) is arranged in the U-shaped groove (24), and the first plug body (25) is connected with the side end of the vertical stirring kettle (10) through a first supporting rod;
the second plug body (26), the second plug body (26) is arranged in the U-shaped groove (24), and the flowing liquid is positioned between the first plug body (25) and the second plug body (26);
the lifting groove (27) is formed in the inner wall of the U-shaped groove (24), and the lifting groove (27) is arranged close to the second plug body (26);
the lifting block (28) is connected in the lifting groove (27) in a sliding manner, and the lifting block (28) is connected with the second plug body (26) through a second supporting rod;
the top block mounting grooves (29) are formed in the bottom ends of the lifting grooves (27) at equal intervals;
the jacking block (30), the jacking block (30) is installed in the jacking block installation groove (29) through a first spring, the jacking block (30) is arranged in a hemispherical shape at the end far away from the first spring, and the jacking block (30) extends into the lifting groove (27) at the end far away from the first spring;
the lifting chamber (31) is arranged in the stirring base (11), and the lifting chamber (31) is arranged close to the top of the liquid inlet channel (21);
a lifting plate (32), wherein the lifting plate (32) is arranged in the lifting chamber (31);
the connecting rope (33), one end of the connecting rope (33) stretches into the lifting chamber (31) and is connected with the lifting plate (32), and the other end of the connecting rope (33) stretches into the top block mounting groove (29) and is arranged in a penetrating way through each top block (30);
the baffle plate (34) is arranged at the end, far away from the connecting rope (33), of the lifting plate (32), and the baffle plate (34) stretches into the liquid inlet channel (21);
the two second springs are symmetrically arranged at the end, close to the baffle plate (34), of the lifting plate (32) by taking the baffle plate (34) as a center, and the end, far away from the lifting plate (32), of the second springs is connected with the inner bottom of the lifting chamber (31);
the stirring device further includes:
the turbine installation chamber (35), the turbine installation chamber (35) is arranged in the stirring base (11), and the turbine installation chamber (35) is arranged close to the bottom of the liquid inlet channel (21);
the turbine mounting frame (36), the turbine mounting frame (36) is arranged in the turbine mounting chamber (35), and the turbine mounting frame (36) stretches into the liquid inlet channel (21);
-a turbine (37), the turbine (37) being mounted on the turbine mounting frame (36) by a first rotation shaft;
the two third springs are symmetrically arranged at the top end of the turbine mounting frame (36) by taking the turbine (37) as a center, and the ends of the third springs far away from the turbine mounting frame (36) are connected with the inner top of the turbine mounting chamber (35);
the second rotating shaft penetrates through the bottom end of the turbine mounting frame (36);
a pair of meshed first bevel gears (38), wherein the first bevel gears (38) are arranged in the turbine installation chamber (35), one first bevel gear (38) is installed on the first rotating shaft, and the other first bevel gear (38) is installed on the top end of the second rotating shaft;
the rack (39) is vertically arranged at the bottom end of the turbine mounting frame (36);
a power chamber (40), wherein the power chamber (40) is arranged in the stirring base (11), and the power chamber (40) is arranged close to the turbine installation chamber (35);
one end of the third rotating shaft extends into the turbine mounting chamber (35), and the other end of the third rotating shaft extends into the power chamber (40);
one end of the fourth rotating shaft extends into the turbine mounting chamber (35), the other end of the fourth rotating shaft extends into the power chamber (40), and the fourth rotating shaft is arranged in parallel with the third rotating shaft;
the two driving pulleys (41) are arranged in the power chamber (40), one driving pulley (41) is arranged on the third rotating shaft, and the other driving pulley (41) is arranged on the fourth rotating shaft;
the driving belt is arranged in the power chamber (40), and is sleeved on the two driving belt wheels (41);
the driving motor (42) is arranged in the power chamber (40), and the output end of the driving motor (42) is connected with the fourth rotating shaft;
a rotating ratchet wheel (43), wherein the rotating ratchet wheel (43) is arranged in the turbine mounting chamber (35), the rotating ratchet wheel (43) is mounted on the fourth rotating shaft, and the rotating ratchet wheel (43) is matched with the rack (39);
and the meshed pair of second bevel gears (44), wherein the second bevel gears (38) are arranged in the turbine installation chamber (35), one of the second bevel gears (44) is installed on the third rotating shaft, and the other second bevel gear (44) is installed at the bottom end of the second rotating shaft.
2. The method for preparing the weather-resistant coating for the adhesive film on the surface layer of the bank card according to claim 1, which is characterized in that: the curing agent is polyamide curing agent or acrylic acid curing agent.
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| CN202111192072.7A CN113717653B (en) | 2021-10-13 | 2021-10-13 | Weather-resistant coating for adhesive film on surface layer of bank card and preparation method thereof |
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| CN202111192072.7A CN113717653B (en) | 2021-10-13 | 2021-10-13 | Weather-resistant coating for adhesive film on surface layer of bank card and preparation method thereof |
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| CN113717653B true CN113717653B (en) | 2023-09-19 |
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