CN113717653A - 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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- CN113717653A CN113717653A CN202111192072.7A CN202111192072A CN113717653A CN 113717653 A CN113717653 A CN 113717653A CN 202111192072 A CN202111192072 A CN 202111192072A CN 113717653 A CN113717653 A CN 113717653A
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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
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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
- C09J7/20—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
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Abstract
The invention discloses a weather-resistant coating for a bank card surface adhesive film and a preparation method thereof, wherein the bank card sequentially comprises a first PVC (polyvinyl chloride) 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; according to the parts by weight, the addition ratio of the weather-resistant polyurethane resin to the auxiliary agent is 3:7-1: 1; 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 stable quality of a bank card of a card-making enterprise, and ensure the 90-degree peel strength of an adhesive film for long-term stability.
Description
Technical Field
The invention belongs to the technical field of coatings, and particularly relates to a weather-resistant coating for a bank card surface adhesive film.
Background
Although the existing adhesive film has high initial peel strength, the peel strength declines rapidly along with the prolonging of time, and finally the adhesive film is easy to peel off from a printing ink layer and even automatically falls off. The bank requires the card-making enterprise to ensure the quality of the bank card for not less than 10 years. When the card is delivered in a warehouse after 2 years, banks require delivery, and the delivery is checked according to the flow, the peel strength of the adhesive film is tested to be not up to the standard, the adhesive film can be peeled off by hands, and great economic loss is caused; meanwhile, due to the influence on the delivery date, the cooperation with the bank is problematic, and similar losses are immeasurable.
The reason that the peel strength of the existing adhesive film is rapidly declined is that water directly participates in the aging reaction of the coating to cause hydrolysis of the polyurethane coating, so that the peel strength is greatly reduced, and the long-acting property of the peel strength cannot be effectively ensured.
Disclosure of Invention
The invention mainly solves the technical problem of providing a weather-resistant coating for a bank card surface adhesive film and a preparation method thereof, and aims to solve the problem of insufficient weather resistance of the coating, ensure the stable quality of a bank card of a card-making enterprise and ensure the 90-degree peel strength of the adhesive film for long-term stability.
In order to solve the technical problems, the invention adopts a technical scheme that: a weather-resistant coating for a glue film on the surface of a bank card is provided, 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; according to the parts by weight, the addition ratio of the weather-resistant polyurethane resin to the auxiliary agent is 3:7-1: 1;
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 0.1-0.2 mm.
Further, the weather-resistant polyurethane resin is polyether polyurethane resin.
Further, the first coating layer further comprises graphene and carbon nanotubes.
Further, when the first coating further comprises graphene and carbon nanotubes, the preparation method of the first coating material comprises the following steps: uniformly mixing the graphene powder, the carbon nano tube, the weather-resistant polyurethane resin and the auxiliary agent, and performing ball milling.
Further, when the first coating further comprises graphene and carbon nanotubes, the auxiliary agent comprises an antifoaming agent. The defoaming agent comprises any one or the combination of more than two of solvent-type modified organic silicon, polyether modified carbon material and water-based modified organic silicon.
Furthermore, the mass ratio of the graphene powder to the weather-resistant polyurethane resin in the first coating layer is (1-2):100, the mass ratio of the carbon nano tubes 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 1-2 h.
Furthermore, the carbon nanotubes comprise single-walled carbon nanotubes or multi-walled carbon nanotubes, the OD is less than 8nm, and the length is 20-100 nm.
Further, the weather-resistant polyurethane resin is a two-component aqueous polyurethane resin and comprises hydroxyl-containing polyol and an isocyanate-containing aqueous curing agent.
Further, the polyols include graft type polyether polyols and polybutadiene diols; the aqueous curing agent comprises hexamethylene diisocyanate and isophorone diisocyanate.
Further, the weight adding proportion of the graft polyether glycol, the polybutadiene glycol, the hexamethylene diisocyanate and the isophorone diisocyanate is 75-85:15-25:1-5: 0.5-1.5.
A preparation method of a weather-resistant coating for a bank card surface adhesive film comprises the following steps:
s1, placing the weather-resistant polyurethane resin into an ultrasonic device, and fully oscillating the weather-resistant polyurethane resin with ultrasonic waves to uniformly disperse the weather-resistant 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 (4) adding a curing agent into the dispersion liquid obtained in the step S2, fully and uniformly stirring, and 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 includes:
a vertical stirred tank;
the top end of the stirring base is provided with a rotating groove, 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 end, away from the stirring motor, of the stirring shaft extends into the vertical stirring kettle from the bottom end of the vertical stirring kettle;
the stirring rods are uniformly distributed on the stirring shaft and are positioned in the vertical stirring kettle;
the centrifugal rods are circumferentially hinged to the stirring shaft, the hinged ends of the centrifugal rods are provided with reset torsion springs, and the centrifugal rods are positioned in the rotating grooves;
and the centrifugal ball is arranged at the end, far away from the stirring shaft, of the centrifugal rod and is abutted to 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 two 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 arranged at 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 liquid outlet channels are arranged in the liquid inlet channels in equal number, 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 two U-shaped grooves are symmetrically arranged at the top end of the stirring base by taking the rotating groove as a center, and flowing liquid is filled in 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 support 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 arranged close to the second plug body;
the lifting block is connected in the lifting groove in a sliding mode and is connected with the second plug body through a second support rod;
the jacking block mounting grooves are equidistantly formed in the bottom end of the lifting groove;
the top block is arranged in the top block mounting groove through a first spring, the end, far away from the first spring, of the top block is hemispherical, and the end, far away from the first spring, of the top block extends into the lifting groove;
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 jacking block mounting groove and penetrates through each jacking 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 two second springs are symmetrically arranged at the end, close to the baffle, of the lifting plate by taking the baffle as a center, and the end, far away from the lifting plate, of the second spring is 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 mounting frame is arranged in the turbine mounting chamber and extends into the liquid inlet channel;
the turbine is mounted on the turbine mounting frame through a first rotating shaft;
the two third springs are symmetrically arranged at the top end of the turbine mounting rack by taking the turbine as a center, and the end, far away from the turbine mounting rack, of the third spring is connected with the top in the turbine mounting chamber;
the second rotating shaft penetrates through the bottom end of the turbine mounting rack;
a pair of engaged first bevel gears, said first bevel gears being disposed within said turbine mounting chamber, one of said first bevel gears being mounted to said first shaft, the other of said first bevel gears being mounted to the top end of said second shaft;
the rack is vertically installed at the bottom end of the turbine installation 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 and the third rotating shaft are arranged in parallel;
the two driving belt wheels are arranged in the power chamber, one driving belt wheel is arranged on the third rotating shaft, and the other driving belt wheel is arranged on the fourth rotating shaft;
the transmission belt is arranged in the power chamber and sleeved on the two transmission 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 mounting chamber, the rotating ratchet wheel is mounted on the fourth rotating shaft, and the rotating ratchet wheel is matched with the rack;
and the second bevel gears are arranged in the turbine mounting chamber, one of the second bevel gears is mounted on the third rotating shaft, and the other second bevel gear is mounted at the bottom end of the second rotating shaft.
The invention has the following beneficial effects:
1. the weather-resistant polyurethane resin can be polyether polyurethane resin, and the polyester polyurethane resin has high water absorption due to the fact that the polyester polyurethane resin contains-COOR ester groups, can absorb moisture in air after being exposed in the air for a long time, and can be slowly hydrolyzed to generate carboxylic acid and alcohol after moisture absorption. The polyether polyurethane resin contains-O-ether bond and can not generate hydrolysis reaction with moisture in the air;
2. the weather-resistant polyurethane resin can also be a two-component waterborne polyurethane resin which comprises hydroxyl-containing polyol and an isocyanate-containing waterborne curing agent, and the two-component waterborne polyurethane has the advantages of high crosslinking density, high hardness of a coating after film forming, good wear resistance, strong adhesive force and excellent water resistance.
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, a certain prevention effect on demagnetization of the bank card is achieved, the performance of the film material is enhanced by the discontinuous fiber reinforced material prepared by the specific formula and the method, and other effects are brought on the premise of enhancing the mechanical property.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the bank card of the present invention;
FIG. 2 is a schematic view of the structure of the stirring apparatus of the present invention;
FIG. 3 is an enlarged view of reference character A in FIG. 2;
fig. 4 is an enlarged view of reference symbol B in fig. 2.
In the figure: 1. a first PVC film layer; 2. a first coating layer; 3. a first printing ink layer; 4. a first PVC card base layer; 5. a second PVC card base layer; 6. a second printing ink layer; 7. a second coating layer; 8. a second PVC film layer; 9. a magnetic stripe layer; 10. a vertical stirred tank; 11. a stirring base; 12. a rotating groove; 13. a stirring shaft; 14. a centrifugal lever; 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; 24, 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. connecting ropes; 34. a baffle plate; 35. a turbine mounting chamber; 36.
a turbine mount; 37. a turbine; 38. a first helical gear; 39. a rack; 40. a power chamber; 41. a drive pulley; 42. a drive motor; 43. rotating the ratchet wheel; 44. a second bevel gear.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the invention.
Example 1: a weather-resistant coating for a bank card with an adhesive film on the surface layer is shown in figure 1, and the bank card sequentially comprises a first PVC thin film layer 1, a first coating layer 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 layer 7, a second PVC thin film layer 8 and a magnetic stripe layer 9 from top to bottom;
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 thin 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 thin film layer is 0.1 mm.
The weather-resistant polyurethane resin is polyether polyurethane resin, and the polyester polyurethane resin has high water absorption due to the fact that the polyester polyurethane resin contains-COOR ester groups, can absorb moisture in air after being exposed in the air for a long time, and can be slowly hydrolyzed to generate carboxylic acid and alcohol after moisture absorption. The polyether polyurethane resin contains-O-ether bond and can not generate hydrolysis reaction with moisture in the air.
A preparation method of a weather-resistant coating for a bank card surface adhesive film comprises the following steps:
s1, placing the weather-resistant polyurethane resin into an ultrasonic device, and fully oscillating the weather-resistant polyurethane resin with ultrasonic waves to uniformly disperse the weather-resistant 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 (4) adding a curing agent into the dispersion liquid obtained in the step S2, fully and uniformly stirring, and drying to obtain the first coating and/or the second coating.
The curing agent is an acrylic curing agent.
Example 2: the weather-resistant coating for the adhesive film on the surface layer of the bank card is the same as the weather-resistant coating in the embodiment 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 thin 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 thin film layer is 0.2 mm.
The weather-resistant polyurethane resin is a two-component waterborne polyurethane resin and comprises hydroxyl-containing polyol and an isocyanate-containing waterborne curing agent. The two-component waterborne polyurethane has the advantages of high crosslinking density, high hardness of a coating after film forming, 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 adding ratio of the graft polyether polyol, the polybutadiene diol, the hexamethylene diisocyanate and the isophorone diisocyanate is 80:20:3: 1.
The curing agent is a polyamide curing agent.
Example 3: the weather-resistant coating for the adhesive film on the surface layer of the bank card is the same as the weather-resistant coating in the embodiment 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 0.14 mm.
The weather-resistant polyurethane resin is a two-component waterborne polyurethane resin and comprises hydroxyl-containing polyol and an isocyanate-containing waterborne curing agent. The two-component waterborne polyurethane has the advantages of high crosslinking density, high hardness of a coating after film forming, 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 adding ratio of the graft polyether polyol, the polybutadiene diol, the hexamethylene diisocyanate and the isophorone diisocyanate is 75:15:1: 0.5.
The curing agent is an acrylic curing agent.
Example 4: the weather-resistant coating for the adhesive film on the surface layer of the bank card is the same as the weather-resistant coating in the embodiment 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 0.16 mm.
The weather-resistant polyurethane resin is a two-component waterborne polyurethane resin and comprises hydroxyl-containing polyol and an isocyanate-containing waterborne curing agent. The two-component waterborne polyurethane has the advantages of high crosslinking density, high hardness of a coating after film forming, 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 adding ratio of the graft polyether polyol, the polybutadiene diol, the hexamethylene diisocyanate and the isophorone diisocyanate is 85:25:5: 1.5.
The curing agent is a polyamide curing agent.
Example 5: the weather-resistant coating for the adhesive film on the surface layer of the bank card is the same as the weather-resistant coating in the embodiment 1 except that:
the first coating of this embodiment further includes 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 a defoaming agent. The defoamer comprises solvent-based 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: uniformly mixing the graphene powder, the carbon nano tube, the weather-resistant polyurethane resin and the auxiliary agent, and performing ball milling.
The ball milling temperature is 30-45 ℃, the speed is 1200-1500r/min, and the time is 2 h.
The carbon nano-tube comprises a multi-wall carbon nano-tube, the OD is less than 8nm, and the length is 80-100 nm.
The total thickness of the first PVC thin 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 thin film layer is 0.2 mm.
The weather-resistant polyurethane resin is a two-component waterborne polyurethane resin and comprises hydroxyl-containing polyol and an isocyanate-containing waterborne curing agent. The two-component waterborne polyurethane has the advantages of high crosslinking density, high hardness of a coating after film forming, 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 adding ratio of the graft polyether polyol, the polybutadiene diol, the hexamethylene diisocyanate and the isophorone diisocyanate is 80:20:3: 1.
The curing agent is a polyamide curing agent.
The coatings of examples 1 to 4 were formed into adhesive films for bank card surface layers, and peel strength tests were performed with commercially available adhesive films for bank card surface layers (comparative examples 1 and 2) under a constant temperature (e.g., 35 ℃) and different humidity environments, and the results are shown in table 1:
the peel strength is the result of the test according to GB/T2792-2014 standard.
TABLE 1
The results in table 1 show that the peel strength of the adhesive film on the surface of the bank card prepared by using the weather-resistant coating of the invention is better than that of the adhesive film on the surface of the existing commercial bank card in different humidity environments. In addition, tests prove that the hardness and the wear resistance of the film obtained in the embodiment 5 are better than those of other embodiments of the invention, and the chip card adopting the film in the embodiment 5 is less prone to demagnetization under repeated tests.
Example 6: the other steps of the preparation method of the weather-resistant coating for the bank card surface adhesive film are the same as the embodiment 1, except that: the stirring device includes:
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;
the stirring motor 16 is arranged in the stirring base 11;
the stirring shaft 13 is arranged at the output end of the stirring motor 16, and the end of the stirring shaft 13, which is far away from the stirring motor 16, 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;
a plurality of centrifugal rods 14 are circumferentially hinged on the stirring shaft 13, a reset torsion spring is mounted at the hinged end of each centrifugal rod 14, and the centrifugal rods 14 are positioned in the rotating grooves 12;
and the centrifugal ball is arranged at the end, far away from the stirring shaft 13, of the centrifugal rod 14, and is abutted to 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;
the annular liquid inlet chamber 18, the said annular liquid inlet chamber 18 locates in the said annular seat 17;
the 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 with 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 channel 23 is arranged in the stirring shaft 13, the liquid outlet channels 23 are arranged in the liquid inlet channel 21 in equal number, one end of the liquid outlet channel 23 is communicated with the liquid outlet groove 20, and the other end of the liquid outlet channel 23 is communicated with the inside of the vertical stirring kettle 10;
the two U-shaped grooves 24 are symmetrically arranged at the top end of the stirring base 11 by taking the rotating groove 12 as a center, and flowing liquid is filled in 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 support rod;
a second plug body 26, wherein 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 slidably connected in the lifting groove 27, and the lifting block 28 is connected with the second plug body 26 through a second support rod;
the jacking 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 end, far away from the first spring, of the top block 30 is hemispherical, and the end, far away from the first spring, of the top block 30 extends into the lifting groove 27;
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;
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 penetrates 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 bottom in the lifting chamber 31.
In this embodiment, the stirring device further includes:
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;
a turbine mounting bracket 36, wherein the turbine mounting bracket 36 is arranged in the turbine mounting chamber 35, and the turbine mounting bracket 36 extends into the liquid inlet channel 21;
a turbine 37, wherein the turbine 37 is mounted on the turbine mounting bracket 36 through a first rotating 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, far away from the turbine mounting frame 36, of the third springs are connected with the top in the turbine mounting chamber 35;
the second rotating shaft penetrates through the bottom end of the turbine mounting rack 36;
a pair of first bevel gears 38 engaged with each other, said first bevel gears 38 being disposed in said turbine mounting chamber 35, one of said first bevel gears 38 being mounted on said first shaft, the other of said first bevel gears 38 being mounted on the top end of said second shaft;
a rack 39, wherein the rack 39 is vertically mounted at the bottom end of the turbine mounting frame 36;
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 installation 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 installation chamber 35, the other end of the fourth rotating shaft extends into the power chamber 40, and the fourth rotating shaft and the third rotating shaft are arranged in parallel;
two driving pulleys 41, two of the driving pulleys 41 are disposed in the power chamber 40, one of the driving pulleys 41 is mounted on the third rotating shaft, and the other driving pulley 41 is mounted on the fourth rotating shaft;
the transmission belt is arranged in the power chamber 40 and sleeved on the two transmission belt wheels 41;
the driving motor 42, 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 installation chamber 35, the rotating ratchet wheel 43 is arranged on the fourth rotating shaft, and the rotating ratchet wheel 43 is matched with the rack 39;
a pair of second bevel gears 44 engaged with each other, said second bevel gears 38 being disposed in said turbine mounting chamber 35, one of said second bevel gears 44 being mounted on said third shaft, and the other of said second bevel gears 44 being mounted at the bottom end of said second shaft.
The working principle and the beneficial effects of the embodiment are as follows:
the dispersion liquid and the auxiliary agent are added into the vertical stirring kettle 10, the stirring motor 16 works to further drive the stirring shaft 13 arranged at the output end of the stirring motor 16 and the stirring rod connected with the stirring shaft 13 to rotate in the vertical stirring kettle 10, the stirring rod finishes the uniform stirring of the dispersion liquid and the auxiliary agent, the curing agent is fed into the liquid inlet channel 21, as the rotating speed of the stirring motor 16 is increased, the centrifugal ball drives the centrifugal rod 14 connected with the centrifugal ball to turn towards the bottom end direction of the rotating groove 12 under the action of centrifugal force, 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 to move in the same direction in the U-shaped groove 24 through flowing liquid, the second plug body 26 drives the lifting block 28 to upwards slide in the lifting groove 27 through the second supporting rod, the lifting block 28 sequentially pushes the top block 30 to retract into the top block mounting groove 29, the first spring contracts, the top block 30 pulls the connecting rope 33, so that the lifting plate 32 which is positioned in the lifting chamber 31 and connected with the connecting rope 33 moves towards the stretching direction of the second spring, the lifting plate 32 drives the baffle 34 to retract into the lifting chamber 31, the baffle 34 gradually removes the blockage of the liquid inlet channel 21, the curing agent is sent into the annular liquid inlet chamber 18 from the liquid inlet channel 21 and the liquid inlet hole 19 and is sent into the liquid outlet channel 23 from the liquid outlet groove 20, the annular plug 22 removes the blockage of the liquid outlet channel 23 along with the descending of the vertical stirring kettle 10, the bottom end of the curing agent self-supporting stirring kettle 10 is sent into the vertical stirring kettle 10, so that the full mixing with the dispersion liquid and the auxiliary agent is completed, when the liquid inlet flow of the curing agent needs to be increased, the driving motor 42 works to drive the fourth rotating shaft which is arranged at the output end of the vertical stirring kettle, and the third rotating shaft which is connected with the fourth rotating shaft through the belt wheel 41 and the driving belt rotates in the turbine installation chamber 35, install in the fourth epaxial rotation ratchet 43 drive rather than rack 39 of adaptation connection, the turbine mounting bracket 36 be connected with rack 39, the turbine 37 be connected with turbine mounting bracket 36 stretch into inlet channel 21 in, the shrink of third spring, the meshing of second helical gear 44 to drive first pivot through second pivot, first helical gear 38 and rotate, first pivot drives turbine 37 and rotates, thereby the velocity of flow of curing agent in the increase inlet channel 21.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The utility model provides a resistant coating of waiting that bank card top layer tape glued membrane was used which characterized in that: 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; according to the parts by weight, the addition ratio of the weather-resistant polyurethane resin to the auxiliary agent is 3:7-1: 1;
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 0.1-0.2 mm.
2. The weather-resistant coating for the adhesive film on the surface of the bank card as claimed in claim 1, wherein: the weather-resistant polyurethane resin is polyether polyurethane resin.
3. The weather-resistant coating for the adhesive film on the surface of the bank card as claimed in claim 1, wherein: the weather-resistant polyurethane resin is a two-component waterborne polyurethane resin and comprises hydroxyl-containing polyol and an isocyanate-containing waterborne curing agent.
4. The weather-resistant coating for the adhesive film on the surface of the bank card as claimed in claim 3, wherein: the polyols include graft polyether polyols and polybutadiene diols; the aqueous curing agent comprises hexamethylene diisocyanate and isophorone diisocyanate.
5. The weather-resistant coating for the adhesive film on the surface of the bank card as claimed in claim 4, wherein: the weight adding proportion of the grafted polyether polyol, the polybutadiene diol, the hexamethylene diisocyanate and the isophorone diisocyanate is 75-85:15-25:1-5: 0.5-1.5.
6. A preparation method of a weather-resistant coating for a bank card surface adhesive film is characterized by comprising the following steps: the method comprises the following steps:
s1, placing the weather-resistant polyurethane resin into an ultrasonic device, and fully oscillating the weather-resistant polyurethane resin with ultrasonic waves to uniformly disperse the weather-resistant 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 (4) adding a curing agent into the dispersion liquid obtained in the step S2, fully and uniformly stirring, and drying to obtain the first coating and/or the second coating.
7. The method for preparing the weather-resistant coating for the adhesive film on the surface of the bank card according to claim 6, which is characterized in that: the curing agent is a polyamide curing agent or an acrylic curing agent.
8. The method for preparing the weather-resistant coating for the adhesive film on the surface of the bank card according to claim 6, which is characterized in that: the stirring device includes:
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);
the stirring motor (16), 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 end, far away from the stirring motor (16), of the stirring shaft (13) 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 hinged to the stirring shaft (13) in the circumferential direction, the hinged ends of the centrifugal rods (14) are provided with return torsion springs, 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 abuts against the bottom end of the vertical stirring kettle (10).
9. The method for preparing the weather-resistant coating for the adhesive film on the surface of the bank card according to claim 8, wherein the stirring device further comprises:
the annular chamber (15), 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);
the annular liquid inlet chamber (18), the annular liquid inlet chamber (18) is arranged in the annular seat (17);
the 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 with the inside of the annular chamber (15) and is connected with the liquid inlet hole (19);
the annular plug (22), the annular plug (22) is installed at the bottom end of the vertical stirring kettle (10), and the stirring shaft (13) is sleeved with the annular plug (22);
the liquid outlet channels (23) are arranged in the stirring shaft (13), the liquid outlet channels (23) are arranged in the liquid inlet channel (21) in equal number, one end of each liquid outlet channel (23) is communicated with the liquid outlet groove (20), and the other end of each liquid outlet channel (23) is communicated with the inside of the vertical stirring kettle (10);
the two U-shaped grooves (24) are symmetrically arranged at the top end of the stirring base (11) by taking the rotating groove (12) as a center, and flowing liquid is filled in 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 support 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 mode, and the lifting block (28) is connected with the second plug body (26) through a second support rod;
the jacking block mounting grooves (29) are formed in the bottom ends of the lifting grooves (27) at equal intervals;
the ejector block (30) is installed in the ejector block installation groove (29) through a first spring, the end, far away from the first spring, of the ejector block (30) is arranged in a hemispherical shape, and the end, far away from the first spring, of the ejector block (30) extends into the lifting groove (27);
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);
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 jacking block mounting groove (29) and penetrates through each jacking block (30);
the baffle (34), the baffle (34) is installed at the end of the lifting plate (32) far away from the connecting rope (33), and the baffle (34) extends 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 bottom in the lifting chamber (31).
10. The method for preparing the weather-resistant coating for the adhesive film on the surface of the bank card according to claim 8, wherein the stirring device further comprises:
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);
a turbine mounting bracket (36), wherein the turbine mounting bracket (36) is arranged in the turbine mounting chamber (35), and the turbine mounting bracket (36) extends into the liquid inlet channel (21);
a turbine (37), the turbine (37) being mounted to 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 end, far away from the turbine mounting frame (36), of the third springs is connected with the inner top of the turbine mounting chamber (35);
the second rotating shaft penetrates through the bottom end of the turbine mounting rack (36);
a pair of first bevel gears (38) in meshing engagement, said first bevel gears (38) being disposed within said turbine mounting chamber (35), one of said first bevel gears (38) being mounted to said first shaft, the other of said first bevel gears (38) being mounted to the top end of said second shaft;
a rack (39), the rack (39) being vertically mounted to a bottom end of the turbine mounting bracket (36);
the power chamber (40), 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 installation 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 installation chamber (35), the other end of the fourth rotating shaft extends into the power chamber (40), and the fourth rotating shaft and the third rotating shaft are arranged in parallel;
the two transmission belt wheels (41) are arranged in the power chamber (40), one of the transmission belt wheels (41) is arranged on the third rotating shaft, and the other transmission belt wheel (41) is arranged on the fourth rotating shaft;
the transmission belt is arranged in the power chamber (40) and sleeved on the two transmission belt wheels (41);
the driving motor (42), 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;
the rotating ratchet wheel (43) is arranged in the turbine installation chamber (35), the rotating ratchet wheel (43) is installed on the fourth rotating shaft, and the rotating ratchet wheel (43) is matched with the rack (39) in arrangement;
a pair of second bevel gears (44) in meshing engagement, said second bevel gears (38) being disposed within said turbine mounting chamber (35), one of said second bevel gears (44) being mounted to said third shaft, and the other of said second bevel gears (44) being mounted to a bottom end of said second shaft.
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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 (en) | 2023-09-19 |
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