CN110379292B - High temperature resistant label - Google Patents
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- CN110379292B CN110379292B CN201910632540.4A CN201910632540A CN110379292B CN 110379292 B CN110379292 B CN 110379292B CN 201910632540 A CN201910632540 A CN 201910632540A CN 110379292 B CN110379292 B CN 110379292B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
- G09F3/02—Forms or constructions
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
- G09F3/02—Forms or constructions
- G09F2003/0257—Multilayer
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Abstract
The invention relates to the field of labels, and provides a high-temperature-resistant label aiming at the problem that the label is easy to turn yellow or warp under a high-temperature condition, which comprises a polyimide substrate layer, wherein one side of the polyimide substrate layer is coated with a high-temperature-resistant surface layer, one side of the polyimide substrate layer, which is far away from the high-temperature-resistant surface layer, is coated with an adhesive layer, one side of the adhesive layer, which is far away from the polyimide substrate layer, is bonded with a release paper layer, and the high-temperature-resistant surface layer comprises the following components in parts by mass: 70-80 parts of epoxy resin; 45-50 parts of ethylene-vinyl acetate copolymer; 10-15 parts of titanium dioxide; 20-25 parts of zinc powder; 20-30 parts of casein; 5-10 parts of polyvinylpyrrolidone. Through the cooperation of titanium dioxide, zinc powder, casein and polyvinylpyrrolidone, be favorable to strengthening the high temperature resistance on high temperature resistant top layer for the label is difficult to turn yellow or take place to stick up the book under the high temperature condition, and then makes the marking effect of label be difficult to receive the influence.
Description
Technical Field
The invention relates to the field of labels, in particular to a high-temperature-resistant label.
Background
Labels refer to tools used to mark objects and categories or content of a product, facilitating self and others to locate and locate their own objects. The labels, known in the printing industry, are mostly printed matter with relevant instructions for identifying their own products, and are mostly self-adhesive backed.
In the manufacturing process of the label, the label may receive high temperature when printing a coating, in addition, the label may also receive high temperature in the using process, but the existing label generally has no high temperature resistance, so that the surface of the label is easy to be yellowed or warped, the marking effect of the label is easy to be affected, and even the label loses the marking effect, and therefore, the label still has an improved space.
Disclosure of Invention
Aiming at the defects in the prior art, the first purpose of the invention is to provide a high-temperature-resistant label which has the advantage of improving the high-temperature-resistant performance of the label.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a high temperature resistant label, includes polyimide base member layer, one of them side coating on polyimide base member layer has high temperature resistant top layer, the one side coating that high temperature resistant top layer was kept away from on polyimide base member layer has the gluing layer, one side that polyimide base member layer was kept away from on the gluing layer bonds there is release paper layer, high temperature resistant top layer includes the component of following parts by mass:
70-80 parts of epoxy resin;
45-50 parts of ethylene-vinyl acetate copolymer;
10-15 parts of titanium dioxide;
20-25 parts of zinc powder;
20-30 parts of casein;
5-10 parts of polyvinylpyrrolidone.
By adopting the technical scheme, the synergistic cooperation of titanium dioxide, zinc powder, casein and polyvinylpyrrolidone is beneficial to enhancing the high-temperature resistance of the high-temperature-resistant surface layer, so that the high-temperature resistance of the label is improved, the label is not easy to turn yellow or warp and roll under the high-temperature condition, and the marking effect of the label is not easy to be influenced; the titanium dioxide and the zinc powder are added for cooperative matching, so that the high-temperature resistance of the high-temperature-resistant surface layer is improved; by adding the casein, the casein is favorably combined with metal ions in the high-temperature resistant surface layer to form a compound, so that the intermolecular cross-linking is favorably realized to form a net structure, the tear resistance of the high-temperature resistant surface layer is favorably enhanced, and the high-temperature resistant surface layer is not easy to crack; by adding the polyvinylpyrrolidone, the permeability of the titanium dioxide, the zinc powder and the casein can be enhanced, so that the titanium dioxide, the zinc powder and the casein can be more easily and uniformly dispersed in the high-temperature-resistant surface layer, the titanium dioxide, the zinc powder and the casein can better play a role, the high-temperature-resistant performance of the high-temperature-resistant surface layer can be enhanced, the label is less prone to yellowing or warping under a high-temperature condition, and the marking effect of the label is less prone to being influenced; the epoxy resin and the ethylene-vinyl acetate copolymer are cooperatively matched, so that the adhesive force of the high-temperature-resistant surface layer is favorably improved, the adhesive strength of the high-temperature-resistant surface layer and the polyimide matrix layer is stronger, the high-temperature-resistant surface layer is more difficult to separate from the polyimide matrix layer, and the stability of the label is favorably improved; meanwhile, the compatibility of each component in the high-temperature resistant surface layer is improved, so that other components are bonded with epoxy resin and ethylene-vinyl acetate copolymer more easily, the components of the high-temperature resistant surface layer are blended uniformly, and the stability of the high-temperature resistant surface layer is improved.
The invention is further configured to: the high-temperature-resistant surface layer also comprises the following components in parts by mass:
3-5 parts of polybenzimidazole;
1-2 parts of sodium dodecyl sulfate.
By adopting the technical scheme, the polybenzimidazole and the sodium dodecyl sulfate are cooperatively matched, so that the high-temperature resistance of the high-temperature-resistant surface layer is favorably enhanced, the high-temperature resistance of the high-temperature-resistant surface layer is enhanced, the high-temperature resistance of the label is favorably enhanced, the label is not easy to turn yellow or warp and roll under the high-temperature condition, and the marking effect of the label is not easy to be influenced; the sodium dodecyl sulfate is also beneficial to enhancing the permeability of the polybenzimidazole, so that the polybenzimidazole can be more easily permeated to any position of the high-temperature-resistant surface layer, and the polybenzimidazole can be more easily and uniformly mixed with other components, so that the polybenzimidazole can better play a role, the high-temperature-resistant performance of the high-temperature-resistant surface layer can be further improved, and the high-temperature-resistant performance of the label can be better; in addition, polybenzimidazole still has certain stickness to be favorable to strengthening the bonding strength on high temperature resistant top layer and polyimide substrate layer, make high temperature resistant top layer be difficult to more with polyimide substrate layer separation, be favorable to improving the stability on high temperature resistant top layer.
The invention is further configured to: the high-temperature-resistant surface layer also comprises the following components in parts by mass:
0.5-1 part of peanut powder.
By adopting the technical scheme, the peanut powder is added, and the peanut powder contains abundant vitamin E, so that the oxidation resistance of the high-temperature-resistant surface layer is favorably enhanced, the high-temperature-resistant surface layer is more difficult to oxidize and corrode, the service life of the high-temperature-resistant surface layer is favorably prolonged, the durability of the high-temperature-resistant surface layer is improved, and the service life of the label is favorably prolonged.
The invention is further configured to: the high-temperature-resistant surface layer also comprises the following components in parts by mass:
1-2 parts of iron powder.
By adopting the technical scheme, the addition of the iron powder is beneficial to enhancing the oxidation resistance of the high-temperature-resistant surface layer, so that the high-temperature-resistant surface layer is not easy to oxidize, the service life of the high-temperature-resistant surface layer is prolonged, the durability of the high-temperature-resistant surface layer is improved, and the service life of the label is prolonged; meanwhile, casein and iron ions are combined to form a compound, so that intermolecular cross-linking is facilitated to form a net structure, the tear strength of the high-temperature-resistant surface layer is enhanced, and the high-temperature-resistant surface layer is not easy to crack.
The invention is further configured to: the high-temperature-resistant surface layer also comprises the following components in parts by mass:
0.3-0.5 part of flatting agent.
By adopting the technical scheme, the addition of the flatting agent is beneficial to improving the optical reflection of the high-temperature resistant surface layer, and is beneficial to absorbing and partially reflecting the light irradiated to the label, thereby being beneficial to the mark display of the label and ensuring that the propaganda effect of the printed matter is better.
The invention is further configured to: the high-temperature-resistant surface layer also comprises the following components in parts by mass:
0.1-0.3 part of talcum powder.
By adopting the technical scheme, the talcum powder is added, so that the surface smoothness and the surface smoothness of the high-temperature-resistant surface layer are improved while the tear resistance of the high-temperature-resistant surface layer is improved, the high-temperature-resistant surface layer is not prone to cracking, meanwhile, the attractiveness of the label is improved, and the propaganda effect of printed matters is better.
Aiming at the defects in the prior art, the second purpose of the invention is to provide a preparation method of a high-temperature-resistant label, which has the advantage of improving the high-temperature resistance of the prepared label.
In order to achieve the purpose, the invention provides the following technical scheme:
a preparation method of a high-temperature-resistant label comprises the following steps:
s1, stirring and mixing the epoxy resin and the ethylene-vinyl acetate copolymer uniformly to form a premix;
s2, adding the rest components of the high-temperature-resistant surface layer into the premix, and uniformly stirring and mixing to form a mixture;
s3, grinding the mixture, performing pressure filtration by adopting a 500-mesh and 800-mesh screen, taking the filtrate to obtain a high-temperature-resistant coating, coating the high-temperature-resistant coating on the polyimide substrate layer, and drying to form a high-temperature-resistant surface layer;
s4, coating an adhesive on one side, away from the high-temperature-resistant surface layer, of the polyimide substrate layer and drying to form an adhesive layer;
and S5, adhering release paper to one side of the adhesive layer, which is far away from the polyimide substrate layer, to form a release paper layer, thus obtaining the wear-resistant label.
By adopting the technical scheme, the epoxy resin and the ethylene-vinyl acetate copolymer are uniformly mixed, and then other components are added and uniformly mixed, so that the other components are favorably and better adhered to the mixture of the epoxy resin and the ethylene-vinyl acetate copolymer, the dispersion uniformity of each component is favorably improved, the stability of the high-temperature-resistant surface layer is favorably improved, and the high-temperature-resistant effect of the high-temperature-resistant surface layer is better; each component of the high-temperature-resistant surface layer which is uniformly mixed is ground firstly, and then the high-temperature-resistant coating is pressurized to pass through the screen, so that the fineness of the high-temperature-resistant surface layer is improved, the surface smoothness of the label is improved, and the propaganda effect of the printed matter is better.
The invention is further configured to: in the step S3, the ground particle size of the mixture is controlled to be 5 to 10 μm.
By adopting the technical scheme, the fineness of the high-temperature-resistant coating is favorably controlled by controlling the grinding particle size of the mixture to be 5-10 mu m, so that the fineness of the high-temperature-resistant surface layer is favorably improved, the surface smoothness of the high-temperature-resistant surface layer is improved, the surface smoothness of the label is favorably improved, and the propaganda effect of the printed matter is better.
The invention is further configured to: in the step S3, the coating thickness of the high temperature resistant surface layer is controlled to be 0.1-0.2 mm.
By adopting the technical scheme, the coating thickness of the high-temperature surface layer is controlled to be 0.1-0.2mm, so that the surface tension of the high-temperature surface layer is favorably enhanced, the high-temperature surface layer is more difficult to crack, the service life of the high-temperature surface layer is favorably prolonged, the durability of the high-temperature surface layer is improved, and the service life of the label is favorably prolonged.
The invention is further configured to: in the step S3, the drying temperature is controlled to be 70-75 ℃, and the drying time is controlled to be 5-10 min.
Adopt above-mentioned technical scheme, through the stoving temperature and the stoving time of control high temperature resistant top layer, be favorable to the abundant stoving on high temperature resistant top layer to be favorable to the shaping on high temperature resistant top layer, simultaneously, be favorable to improving the degree of consistency on high temperature resistant top layer, make the stability on high temperature resistant top layer higher.
In conclusion, the invention has the following beneficial effects:
1. by adopting the synergistic cooperation of titanium dioxide, zinc powder, casein and polyvinylpyrrolidone, the high-temperature resistance of the high-temperature-resistant surface layer is favorably enhanced, so that the label is not easy to turn yellow or warp under a high-temperature condition, and the marking effect of the label is not easy to be influenced;
2. by adding titanium dioxide and zinc powder for cooperative matching, the high-temperature resistance of the high-temperature-resistant surface layer is favorably improved, casein is favorably combined with metal ions in the high-temperature-resistant surface layer to form a compound, and intermolecular cross-linking is favorably carried out to form a net structure, so that the tear strength of the high-temperature-resistant surface layer is enhanced, and the high-temperature-resistant surface layer is not easy to crack;
3. by adding the polyvinylpyrrolidone, the permeability of the titanium dioxide, the zinc powder and the casein can be enhanced, the titanium dioxide, the zinc powder and the casein can play a better role, the high temperature resistance of the high temperature resistant surface layer can be enhanced, and the label is less prone to yellowing or warping under the high temperature condition, so that the marking effect of the label is less prone to being influenced;
4. the epoxy resin and the ethylene-vinyl acetate copolymer are cooperatively matched, so that the adhesive force of the high-temperature-resistant surface layer is favorably improved, the adhesive strength of the high-temperature-resistant surface layer and the polyimide matrix layer is stronger, the high-temperature-resistant surface layer is more difficult to separate from the polyimide matrix layer, and the stability of the label is favorably improved;
5. the epoxy resin and the ethylene-vinyl acetate copolymer are cooperatively matched, so that the compatibility of each component in the high-temperature-resistant surface layer is improved, other components are bonded with the epoxy resin and the ethylene-vinyl acetate copolymer more easily, the components of the high-temperature-resistant surface layer are blended uniformly, and the stability of the high-temperature-resistant surface layer is improved.
Drawings
Fig. 1 is a schematic structural diagram of a high temperature resistant label in the invention.
In the figure: 1. a high temperature resistant surface layer; 2. a polyimide substrate layer; 3. an adhesive layer; 4. and (7) a release paper layer.
Detailed Description
The present invention will be described in further detail with reference to examples.
In the following examples, adhesives commonly used in the art are used, and the specific types of adhesives do not substantially affect the present invention.
In the following examples, the epoxy resin used was E-44 available from Chunhailangmi, Guangzhou.
In the following examples, an ethylene-vinyl acetate copolymer having a trade name of 420 from Dongsho plastics materials Co., Ltd, Dongguan was used.
In the following examples, casein from Qingdao Youthful Biotech Co., Ltd is used as the casein.
In the following examples, polyvinylpyrrolidone from Shandong McRong bioengineering GmbH was used as polyvinylpyrrolidone.
In the following examples, polybenzimidazole is available from Suzhou republic of optoelectronics technology, Inc. under the U-60 designation.
In the following examples, sodium dodecylsulfate was 210900306, a commercial product of Zhengzhou chemical Limited.
In the following examples, the matting agent used was OK520 available from Shanghai Kanto New Material science and technology, Inc.
In the following examples, the talc powder used was a 325 mesh powder of LDW brand from the trade company of libanox corporation, foshan city.
Example 1
A high temperature resistant label, see figure 1, includes polyimide base member layer 2, and one of them side coating of polyimide base member layer 2 has high temperature resistant top layer 1, and the one side coating that polyimide base member layer 2 kept away from high temperature resistant top layer 1 has adhesive layer 3, and the one side that polyimide base member layer 2 was kept away from to adhesive layer 3 bonds there is release paper layer 4.
The high-temperature-resistant surface layer comprises the following components in parts by mass:
70kg of epoxy resin; 50kg of ethylene-vinyl acetate copolymer; 12.5kg of titanium dioxide; 20kg of zinc powder; 30kg of casein; 7.5kg of polyvinylpyrrolidone.
The preparation method of the high-temperature resistant label comprises the following steps:
s1, adding 70kg of epoxy resin and 50kg of ethylene-vinyl acetate copolymer into a 200L stirring kettle, stirring at the rotating speed of 300r/min, controlling the temperature at 50 ℃, and uniformly stirring and mixing to form a premix;
s2, adding 12.5kg of titanium dioxide, 20kg of zinc powder, 30kg of casein and 7.5kg of polyvinylpyrrolidone into the premix while stirring, and uniformly stirring and mixing to form a mixture;
s3, adding the mixture into a ball mill, grinding the mixture into a mixture with a particle size of 5 microns, then performing pressure filtration by using a 500-mesh screen, taking filtrate to obtain high-temperature-resistant paint, coating the high-temperature-resistant paint on a polyimide substrate layer, controlling the coating thickness to be 0.1mm, then placing the polyimide substrate layer into an oven to be dried, controlling the drying temperature to be 70 ℃ and the drying time to be 10min, and forming a high-temperature-resistant surface layer;
s4, coating an adhesive on one side, away from the high-temperature-resistant surface layer, of the polyimide substrate layer, drying to form an adhesive layer, and controlling the coating thickness of the adhesive layer to be 0.1 mm;
and S5, adhering release paper to one side of the adhesive layer, which is far away from the polyimide substrate layer, to form a release paper layer, thus obtaining the high-temperature-resistant label.
Example 2
The difference from example 1 is that:
the high-temperature-resistant surface layer comprises the following components in parts by mass:
75kg of epoxy resin; 45kg of ethylene-vinyl acetate copolymer; 15kg of titanium dioxide; 25kg of zinc powder; 20kg of casein; 10kg of polyvinylpyrrolidone.
The preparation method of the high-temperature resistant label comprises the following steps:
s1, adding 75kg of epoxy resin and 45kg of ethylene-vinyl acetate copolymer into a 200L stirring kettle, stirring at the rotating speed of 300r/min, controlling the temperature to be 55 ℃, and uniformly stirring and mixing to form a premix;
s2, adding 15kg of titanium dioxide, 25kg of zinc powder, 20kg of casein and 10kg of polyvinylpyrrolidone into the premix while stirring, and uniformly stirring and mixing to form a mixture;
s3, adding the mixture into a ball mill, grinding the mixture into a mixture with the particle size of 8 microns, then performing pressure filtration by using a 650-mesh screen, taking filtrate to obtain high-temperature-resistant paint, coating the high-temperature-resistant paint on a polyimide substrate layer, controlling the coating thickness to be 0.15mm, then placing the polyimide substrate layer into an oven to be dried, controlling the drying temperature to be 73 ℃ and the drying time to be 8min, and forming a high-temperature-resistant surface layer;
s4, coating an adhesive on one side, away from the high-temperature-resistant surface layer, of the polyimide substrate layer, drying to form an adhesive layer, and controlling the coating thickness of the adhesive layer to be 0.2 mm;
and S5, adhering release paper to one side of the adhesive layer, which is far away from the polyimide substrate layer, to form a release paper layer, thus obtaining the high-temperature-resistant label.
Example 3
The difference from example 1 is that:
the high-temperature-resistant surface layer comprises the following components in parts by mass:
80kg of epoxy resin; 47.5kg of ethylene-vinyl acetate copolymer; 10kg of titanium dioxide; 22.5kg of zinc powder; 25kg of casein; 5kg of polyvinylpyrrolidone.
The preparation method of the high-temperature resistant label comprises the following steps:
s1, adding 80kg of epoxy resin and 47.5kg of ethylene-vinyl acetate copolymer into a 200L stirring kettle, stirring at the rotating speed of 300r/min, controlling the temperature to be 60 ℃, and uniformly stirring and mixing to form a premix;
s2, adding 10kg of titanium dioxide, 22.5kg of zinc powder, 25kg of casein and 5kg of polyvinylpyrrolidone into the premix while stirring, and uniformly stirring and mixing to form a mixture;
s3, adding the mixture into a ball mill, grinding the mixture into a mixture with the particle size of 10 microns, then performing pressure filtration by using a 800-mesh screen, taking filtrate to obtain high-temperature-resistant paint, coating the high-temperature-resistant paint on a polyimide substrate layer, controlling the coating thickness to be 0.2mm, then placing the polyimide substrate layer into an oven to be dried, controlling the drying temperature to be 75 ℃ and the drying time to be 5min, and forming a high-temperature-resistant surface layer;
s4, coating an adhesive on one side, away from the high-temperature-resistant surface layer, of the polyimide substrate layer, drying to form an adhesive layer, and controlling the coating thickness of the adhesive layer to be 0.3 mm;
and S5, adhering release paper to one side of the adhesive layer, which is far away from the polyimide substrate layer, to form a release paper layer, thus obtaining the high-temperature-resistant label.
Example 4
The difference from example 3 is that:
the high-temperature-resistant surface layer also comprises the following components in parts by mass:
3kg of polybenzimidazole; 2kg of sodium dodecyl sulfate.
The preparation method of the high-temperature resistant label comprises the following steps:
s1, adding 80kg of epoxy resin and 47.5kg of ethylene-vinyl acetate copolymer into a 200L stirring kettle, stirring at the rotating speed of 300r/min, controlling the temperature to be 50 ℃, and uniformly stirring and mixing to form a premix;
s2, adding 10kg of titanium dioxide, 22.5kg of zinc powder, 25kg of casein, 5kg of polyvinylpyrrolidone, 3kg of polybenzimidazole and 2kg of sodium dodecyl sulfate into the premix while stirring, and uniformly stirring and mixing to form a mixture;
s3, adding the mixture into a ball mill, grinding the mixture into a mixture with a particle size of 5 microns, then performing pressure filtration by using a 500-mesh screen, taking filtrate to obtain high-temperature-resistant paint, coating the high-temperature-resistant paint on a polyimide substrate layer, controlling the coating thickness to be 0.1mm, then placing the polyimide substrate layer into an oven to be dried, controlling the drying temperature to be 70 ℃ and the drying time to be 10min, and forming a high-temperature-resistant surface layer;
s4, coating an adhesive on one side, away from the high-temperature-resistant surface layer, of the polyimide substrate layer, drying to form an adhesive layer, and controlling the coating thickness of the adhesive layer to be 0.1 mm;
and S5, adhering release paper to one side of the adhesive layer, which is far away from the polyimide substrate layer, to form a release paper layer, thus obtaining the high-temperature-resistant label.
Example 5
The difference from example 3 is that:
the high-temperature-resistant surface layer also comprises the following components in parts by mass:
5kg of polybenzimidazole; 1kg of sodium dodecyl sulfate.
The preparation method of the high-temperature resistant label comprises the following steps:
s1, adding 80kg of epoxy resin and 47.5kg of ethylene-vinyl acetate copolymer into a 200L stirring kettle, stirring at the rotating speed of 300r/min, controlling the temperature to be 60 ℃, and uniformly stirring and mixing to form a premix;
s2, adding 10kg of titanium dioxide, 22.5kg of zinc powder, 25kg of casein, 5kg of polyvinylpyrrolidone, 5kg of polybenzimidazole and 1kg of sodium dodecyl benzene sulfonate into the premix while stirring, and uniformly stirring and mixing to form a mixture;
s3, adding the mixture into a ball mill, grinding the mixture into a mixture with the particle size of 10 microns, then performing pressure filtration by using a 800-mesh screen, taking filtrate to obtain high-temperature-resistant paint, coating the high-temperature-resistant paint on a polyimide substrate layer, controlling the coating thickness to be 0.2mm, then placing the polyimide substrate layer into an oven to be dried, controlling the drying temperature to be 75 ℃ and the drying time to be 5min, and forming a high-temperature-resistant surface layer;
s4, coating an adhesive on one side, away from the high-temperature-resistant surface layer, of the polyimide substrate layer, drying to form an adhesive layer, and controlling the coating thickness of the adhesive layer to be 0.3 mm;
and S5, adhering release paper to one side of the adhesive layer, which is far away from the polyimide substrate layer, to form a release paper layer, thus obtaining the high-temperature-resistant label.
Example 6
The difference from example 3 is that:
the high-temperature-resistant surface layer also comprises the following components in parts by mass:
1kg of sodium dodecyl sulfate.
The preparation method of the high-temperature resistant label comprises the following steps:
s1, adding 80kg of epoxy resin and 47.5kg of ethylene-vinyl acetate copolymer into a 200L stirring kettle, stirring at the rotating speed of 300r/min, controlling the temperature to be 50 ℃, and uniformly stirring and mixing to form a premix;
s2, adding 10kg of titanium dioxide, 22.5kg of zinc powder, 25kg of casein, 5kg of polyvinylpyrrolidone and 1kg of sodium dodecyl sulfate into the premix while stirring, and uniformly stirring and mixing to form a mixture;
s3, adding the mixture into a ball mill, grinding the mixture into a mixture with a particle size of 5 microns, then performing pressure filtration by using a 500-mesh screen, taking filtrate to obtain high-temperature-resistant paint, coating the high-temperature-resistant paint on a polyimide substrate layer, controlling the coating thickness to be 0.1mm, then placing the polyimide substrate layer into an oven to be dried, controlling the drying temperature to be 70 ℃ and the drying time to be 10min, and forming a high-temperature-resistant surface layer;
s4, coating an adhesive on one side, away from the high-temperature-resistant surface layer, of the polyimide substrate layer, drying to form an adhesive layer, and controlling the coating thickness of the adhesive layer to be 0.1 mm;
and S5, adhering release paper to one side of the adhesive layer, which is far away from the polyimide substrate layer, to form a release paper layer, thus obtaining the high-temperature-resistant label.
Example 7
The difference from example 3 is that:
the high-temperature-resistant surface layer also comprises the following components in parts by mass:
5kg of polybenzimidazole.
The preparation method of the high-temperature resistant label comprises the following steps:
s1, adding 80kg of epoxy resin and 47.5kg of ethylene-vinyl acetate copolymer into a 200L stirring kettle, stirring at the rotating speed of 300r/min, controlling the temperature to be 60 ℃, and uniformly stirring and mixing to form a premix;
s2, adding 10kg of titanium dioxide, 22.5kg of zinc powder, 25kg of casein, 5kg of polyvinylpyrrolidone and 5kg of polybenzimidazole into the premix while stirring, and uniformly stirring and mixing to form a mixture;
s3, adding the mixture into a ball mill, grinding the mixture into a mixture with the particle size of 10 microns, then performing pressure filtration by using a 800-mesh screen, taking filtrate to obtain high-temperature-resistant paint, coating the high-temperature-resistant paint on a polyimide substrate layer, controlling the coating thickness to be 0.2mm, then placing the polyimide substrate layer into an oven to be dried, controlling the drying temperature to be 75 ℃ and the drying time to be 5min, and forming a high-temperature-resistant surface layer;
s4, coating an adhesive on one side, away from the high-temperature-resistant surface layer, of the polyimide substrate layer, drying to form an adhesive layer, and controlling the coating thickness of the adhesive layer to be 0.3 mm;
and S5, adhering release paper to one side of the adhesive layer, which is far away from the polyimide substrate layer, to form a release paper layer, thus obtaining the high-temperature-resistant label.
Example 8
The difference from example 3 is that:
the high-temperature-resistant surface layer also comprises the following components in parts by mass:
3kg of polybenzimidazole; 2kg of sodium dodecyl sulfate; 0.75kg of peanut powder; 2kg of iron powder; 0.5kg of delustering agent; 0.2kg of talcum powder.
The preparation method of the high-temperature resistant label comprises the following steps:
s1, adding 80kg of epoxy resin and 47.5kg of ethylene-vinyl acetate copolymer into a 200L stirring kettle, stirring at the rotating speed of 300r/min, controlling the temperature to be 50 ℃, and uniformly stirring and mixing to form a premix;
s2, adding 10kg of titanium dioxide, 22.5kg of zinc powder, 25kg of casein, 5kg of polyvinylpyrrolidone, 3kg of polybenzimidazole, 2kg of sodium dodecyl sulfate, 0.75kg of peanut powder, 2kg of iron powder, 0.5kg of flatting agent and 0.2kg of talcum powder into the premix while stirring, and uniformly stirring and mixing to form a mixture;
s3, adding the mixture into a ball mill, grinding the mixture into a mixture with a particle size of 5 microns, then performing pressure filtration by using a 500-mesh screen, taking filtrate to obtain high-temperature-resistant paint, coating the high-temperature-resistant paint on a polyimide substrate layer, controlling the coating thickness to be 0.1mm, then placing the polyimide substrate layer into an oven to be dried, controlling the drying temperature to be 70 ℃ and the drying time to be 10min, and forming a high-temperature-resistant surface layer;
s4, coating an adhesive on one side, away from the high-temperature-resistant surface layer, of the polyimide substrate layer, drying to form an adhesive layer, and controlling the coating thickness of the adhesive layer to be 0.1 mm;
and S5, adhering release paper to one side of the adhesive layer, which is far away from the polyimide substrate layer, to form a release paper layer, thus obtaining the high-temperature-resistant label.
Example 9
The difference from example 3 is that:
the high-temperature-resistant surface layer also comprises the following components in parts by mass:
4kg of polybenzimidazole; 1kg of sodium dodecyl sulfate; 1kg of peanut powder; 1.5kg of iron powder; 0.4kg of delustering agent; 0.3kg of talcum powder.
The preparation method of the high-temperature resistant label comprises the following steps:
s1, adding 80kg of epoxy resin and 47.5kg of ethylene-vinyl acetate copolymer into a 200L stirring kettle, stirring at the rotating speed of 300r/min, controlling the temperature to be 55 ℃, and uniformly stirring and mixing to form a premix;
s2, adding 10kg of titanium dioxide, 22.5kg of zinc powder, 25kg of casein, 5kg of polyvinylpyrrolidone, 4kg of polybenzimidazole, 1kg of sodium dodecyl sulfate, 1kg of peanut powder, 1.5kg of iron powder, 0.4kg of flatting agent and 0.3kg of talcum powder into the premix while stirring, and uniformly stirring and mixing to form a mixture;
s3, adding the mixture into a ball mill, grinding the mixture into a mixture with the particle size of 8 microns, then performing pressure filtration by using a 650-mesh screen, taking filtrate to obtain high-temperature-resistant paint, coating the high-temperature-resistant paint on a polyimide substrate layer, controlling the coating thickness to be 0.15mm, then placing the polyimide substrate layer into an oven to be dried, controlling the drying temperature to be 73 ℃ and the drying time to be 8min, and forming a high-temperature-resistant surface layer;
s4, coating an adhesive on one side, away from the high-temperature-resistant surface layer, of the polyimide substrate layer, drying to form an adhesive layer, and controlling the coating thickness of the adhesive layer to be 0.2 mm;
and S5, adhering release paper to one side of the adhesive layer, which is far away from the polyimide substrate layer, to form a release paper layer, thus obtaining the high-temperature-resistant label.
Example 10
The difference from example 3 is that:
the high-temperature-resistant surface layer also comprises the following components in parts by mass:
5kg of polybenzimidazole; 1.5kg of sodium dodecyl sulfate; 0.5kg of peanut powder; 1kg of iron powder; 0.3kg of flatting agent; 0.1kg of talcum powder.
The preparation method of the high-temperature resistant label comprises the following steps:
s1, adding 80kg of epoxy resin and 47.5kg of ethylene-vinyl acetate copolymer into a 200L stirring kettle, stirring at the rotating speed of 300r/min, controlling the temperature to be 60 ℃, and uniformly stirring and mixing to form a premix;
s2, adding 10kg of titanium dioxide, 22.5kg of zinc powder, 25kg of casein, 5kg of polyvinylpyrrolidone, 5kg of polybenzimidazole, 1.5kg of sodium dodecyl sulfate, 0.5kg of peanut powder, 1kg of iron powder, 0.3kg of flatting agent and 0.1kg of talcum powder into the premix while stirring, and uniformly stirring and mixing to form a mixture;
s3, adding the mixture into a ball mill, grinding the mixture into a mixture with the particle size of 10 microns, then performing pressure filtration by using a 800-mesh screen, taking filtrate to obtain high-temperature-resistant paint, coating the high-temperature-resistant paint on a polyimide substrate layer, controlling the coating thickness to be 0.2mm, then placing the polyimide substrate layer into an oven to be dried, controlling the drying temperature to be 75 ℃ and the drying time to be 5min, and forming a high-temperature-resistant surface layer;
s4, coating an adhesive on one side, away from the high-temperature-resistant surface layer, of the polyimide substrate layer, drying to form an adhesive layer, and controlling the coating thickness of the adhesive layer to be 0.3 mm;
and S5, adhering release paper to one side of the adhesive layer, which is far away from the polyimide substrate layer, to form a release paper layer, thus obtaining the high-temperature-resistant label.
Comparative example 1
The difference from example 1 is that: the components of the high temperature resistant label lack the component epoxy resin.
Comparative example 2
The difference from example 1 is that: the components of the high temperature resistant label lack the component ethylene-vinyl acetate copolymer.
Comparative example 3
The difference from example 1 is that: the components of the high temperature resistant label lack the component titanium dioxide.
Comparative example 4
The difference from example 1 is that: the components of the high temperature resistant label lack the component zinc powder.
Comparative example 5
The difference from example 1 is that: the components of the temperature resistant tag lack the component casein.
Comparative example 6
The difference from example 1 is that: the components of the high temperature resistant label lack the component polyvinylpyrrolidone.
Experiment 1
The labels prepared in the above examples and comparative examples were adhered to a steel plate and baked at different temperatures, and the temperature (. degree. C.) at which the label was warped was recorded.
Experiment 2
The tear strength (kN/m) of the labels obtained in the above examples and comparative examples was measured in accordance with GB/T529-2008 "determination of tear Strength of vulcanized rubber or thermoplastic rubber (trouser, Right-Angle and crescent test specimens").
The data from the above experiments are shown in Table 1.
TABLE 1
According to the comparison of the data of examples 1-3 and comparative examples 1-2 in table 1, the epoxy resin and the ethylene-vinyl acetate copolymer are cooperatively used in examples 1-3, the epoxy resin component is absent in comparative example 1, the ethylene-vinyl acetate copolymer component is absent in comparative example 2, and the warping temperature of examples 1-3 is higher than that of comparative examples 1-2, which shows that the epoxy resin and the ethylene-vinyl acetate copolymer are cooperatively used to enhance the bonding strength between the high temperature resistant surface layer and the polyimide matrix layer, so that the high temperature resistant surface layer is not easily separated from the polyimide matrix layer, the high temperature resistance of the label is more stable, and the warping condition of the high temperature resistant surface layer is not easily generated.
According to the comparison of the data of examples 1-3 and comparative examples 3-6 in table 1, titanium dioxide, zinc powder, casein and polyvinylpyrrolidone are used to prepare the high temperature resistant label in examples 1-3, while titanium dioxide is used as a component in comparative example 3, zinc powder is used as a component in comparative example 4, casein is used as a component in comparative example 5, polyvinylpyrrolidone is used as a component in comparative example 6, the warping temperature of examples 1-3 is higher than that of comparative examples 3-6, and the tear strength of examples 1-3 is higher than that of comparative examples 3-6, which indicates that the high temperature resistance of the high temperature resistant surface layer is enhanced by using titanium dioxide, zinc powder, casein and polyvinylpyrrolidone to cooperate with each other, so that the high temperature resistant surface layer is less likely to warp under high temperature conditions, meanwhile, casein is easy to combine with metal ions to form a compound, so that mutual cross-linking among molecules is facilitated to form a net structure, the tear strength of the high-temperature-resistant surface layer is further facilitated to be improved, and the high-temperature-resistant surface layer is less prone to cracking; meanwhile, the method shows that only when the titanium dioxide, the zinc powder, the casein and the polyvinylpyrrolidone are cooperatively matched, the high-temperature resistance of the high-temperature-resistant surface layer can be better improved, the tear strength of the high-temperature-resistant surface layer can be enhanced, and the performance of the high-temperature-resistant surface layer is easily influenced due to the lack of any component.
According to the comparison of the data of the examples 1 to 3 and the examples 4 to 5 in the table 1, the components of polybenzimidazole and sodium dodecyl sulfate are added in the examples 4 to 5 compared with the examples 1 to 3, and the warping temperature of the examples 4 to 5 is higher than that of the examples 1 to 3, which shows that the polybenzimidazole and the sodium dodecyl sulfate are cooperatively used to enhance the high temperature resistance of the high temperature resistant surface layer, so that the label is less prone to warping under high temperature conditions.
According to the comparison of the data of the examples 4-5 and the examples 6-7 in the table 1, the polybenzimidazole and the sodium dodecyl sulfate are adopted in the examples 4-5, the polybenzimidazole as the component is absent in the example 6, the sodium dodecyl sulfate as the component is absent in the example 7, and the warping temperature of the examples 4-5 is higher than that of the examples 6-7, which indicates that the polybenzimidazole and the sodium dodecyl sulfate are adopted in the synergistic cooperation, so that the high temperature resistance of the high temperature resistant surface layer is favorably improved, the warping phenomenon of the label is more difficult to occur under the high temperature condition, and the lack of any component easily affects the high temperature resistance of the high temperature resistant surface layer.
According to comparison of data of examples 4-5 and examples 8-10 in table 1, peanut powder, iron powder, a delustering agent and talcum powder are added in the examples 8-10 in comparison with the examples 4-5, the warping temperatures of the examples 8-10 are all higher than those of the examples 4-5, and the tear strengths of the examples 8-10 are all higher than those of the examples 4-5, which indicates that the high temperature resistance of the high temperature resistant surface layer is improved to a certain extent by adding the peanut powder, the iron powder, the delustering agent and the talcum powder, and the tear strength of the high temperature resistant surface layer is improved to a certain extent, so that the label is not easy to warp under a high temperature condition and the service life of the label is prolonged.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (9)
1. A high temperature resistant label, characterized by: including polyimide base member layer (2), the wherein one side coating of polyimide base member layer (2) has high temperature resistant top layer (1), the one side coating that high temperature resistant top layer (1) was kept away from in polyimide base member layer (2) has adhesive layer (3), one side bonding that polyimide base member layer (2) was kept away from in adhesive layer (3) has release paper layer (4), high temperature resistant top layer (1) includes the component of following parts by mass:
70-80 parts of epoxy resin;
45-50 parts of ethylene-vinyl acetate copolymer;
10-15 parts of titanium dioxide;
20-25 parts of zinc powder;
20-30 parts of casein;
5-10 parts of polyvinylpyrrolidone;
1-2 parts of iron powder.
2. The high temperature resistant label of claim 1, wherein: the high-temperature-resistant surface layer (1) further comprises the following components in parts by mass:
3-5 parts of polybenzimidazole;
1-2 parts of sodium dodecyl sulfate.
3. The high temperature resistant label of any one of claims 1-2, wherein: the high-temperature-resistant surface layer (1) further comprises the following components in parts by mass:
0.5-1 part of peanut powder.
4. The high temperature resistant label of any one of claims 1-2, wherein: the high-temperature-resistant surface layer (1) further comprises the following components in parts by mass:
0.3-0.5 part of flatting agent.
5. The high temperature resistant label of any one of claims 1-2, wherein: the high-temperature-resistant surface layer (1) further comprises the following components in parts by mass:
0.1-0.3 part of talcum powder.
6. A method of making a high temperature resistant label as claimed in any one of claims 1 to 5, characterised in that: the method comprises the following steps:
s1, stirring and mixing the epoxy resin and the ethylene-vinyl acetate copolymer uniformly to form a premix;
s2, adding the rest components of the high-temperature-resistant surface layer (1) into the premix, and stirring and mixing uniformly to form a mixture;
s3, grinding the mixture, performing pressure filtration by adopting a 500-mesh and 800-mesh screen, taking the filtrate to obtain a high-temperature-resistant coating, coating the high-temperature-resistant coating on the polyimide substrate layer (2) and drying to form a high-temperature-resistant surface layer (1);
s4, coating an adhesive on one side, far away from the high-temperature-resistant surface layer (1), of the polyimide substrate layer (2) and drying to form an adhesive layer (3);
and S5, adhering release paper to one side of the adhesive layer (3) far away from the polyimide substrate layer (2) to form a release paper layer (4), and thus obtaining the wear-resistant label.
7. The method of making a high temperature resistant label of claim 6, wherein: in the step S3, the ground particle size of the mixture is controlled to be 5 to 10 μm.
8. The method of making a high temperature resistant label of claim 7, wherein: in the step S3, the coating thickness of the high-temperature resistant surface layer (1) is controlled to be 0.1-0.2 mm.
9. The method of making a high temperature resistant label of claim 6, wherein: in the step S3, the drying temperature is controlled to be 70-75 ℃, and the drying time is controlled to be 5-10 min.
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Address after: 510000 plant 401, 21 Guangchen Road, Zhongluotan Town, Baiyun District, Guangzhou City, Guangdong Province Patentee after: Guangzhou Caibang Label Co.,Ltd. Address before: 510000 plant 401, 21 Guangchen Road, Zhongluotan Town, Baiyun District, Guangzhou City, Guangdong Province Patentee before: Guangzhou Caibang Printing Co.,Ltd. |