CN116144261A - Heat-resistant coating for thermal transfer carbon ribbon, preparation method and coating process thereof - Google Patents
Heat-resistant coating for thermal transfer carbon ribbon, preparation method and coating process thereof Download PDFInfo
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- CN116144261A CN116144261A CN202210983152.2A CN202210983152A CN116144261A CN 116144261 A CN116144261 A CN 116144261A CN 202210983152 A CN202210983152 A CN 202210983152A CN 116144261 A CN116144261 A CN 116144261A
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- 239000011248 coating agent Substances 0.000 title claims abstract description 119
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- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 79
- 238000002360 preparation method Methods 0.000 title description 11
- RYSXWUYLAWPLES-MTOQALJVSA-N (Z)-4-hydroxypent-3-en-2-one titanium Chemical compound [Ti].C\C(O)=C\C(C)=O.C\C(O)=C\C(C)=O.C\C(O)=C\C(C)=O.C\C(O)=C\C(C)=O RYSXWUYLAWPLES-MTOQALJVSA-N 0.000 claims abstract description 27
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims abstract description 22
- 239000012975 dibutyltin dilaurate Substances 0.000 claims abstract description 22
- 239000003960 organic solvent Substances 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 17
- XDLMVUHYZWKMMD-UHFFFAOYSA-N 3-trimethoxysilylpropyl 2-methylprop-2-enoate Chemical compound CO[Si](OC)(OC)CCCOC(=O)C(C)=C XDLMVUHYZWKMMD-UHFFFAOYSA-N 0.000 claims abstract description 15
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 15
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- 239000000463 material Substances 0.000 claims description 70
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- 238000003756 stirring Methods 0.000 claims description 28
- 239000003973 paint Substances 0.000 claims description 24
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 claims description 19
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- 238000007790 scraping Methods 0.000 claims description 18
- 238000005303 weighing Methods 0.000 claims description 14
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- -1 polysiloxane Polymers 0.000 claims description 5
- 238000004132 cross linking Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- 238000007639 printing Methods 0.000 abstract description 35
- 229920000642 polymer Polymers 0.000 abstract description 6
- 230000004913 activation Effects 0.000 abstract description 2
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 230000004888 barrier function Effects 0.000 abstract description 2
- 238000002844 melting Methods 0.000 abstract description 2
- 230000008018 melting Effects 0.000 abstract description 2
- 230000015556 catabolic process Effects 0.000 abstract 1
- 238000006731 degradation reaction Methods 0.000 abstract 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 54
- 239000005020 polyethylene terephthalate Substances 0.000 description 54
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 20
- 229910052742 iron Inorganic materials 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 5
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
- B05C11/023—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
- B05C11/023—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface
- B05C11/025—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface with an essentially cylindrical body, e.g. roll or rod
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1039—Recovery of excess liquid or other fluent material; Controlling means therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/02—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to macromolecular substances, e.g. rubber
- B05D7/04—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to macromolecular substances, e.g. rubber to surfaces of films or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- Engineering & Computer Science (AREA)
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- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a heat-resistant coating for a thermal transfer carbon ribbon, which is prepared by mixing titanium acetylacetonate, alpha, omega-dihydroxypolysiloxane taking hydroxyl as a terminal group, methacryloxypropyl trimethoxysilane, dibutyl tin dilaurate and an organic solvent. According to the invention, titanium acetylacetonate is mixed into the polymer chains of the organic matters such as alpha, omega-dihydroxypolysiloxane, methacryloxypropyl trimethoxysilane, dibutyl tin dilaurate and the like which take hydroxyl groups as end groups, so that the activation energy of the polymer chains is improved, the degradation of the polymer chains needs to overcome higher energy barriers, more energy is absorbed, and the high temperature resistance of the heat-resistant coating of the thermal transfer carbon ribbon is effectively improved. The prepared heat transfer carbon ribbon heat-resistant coating has good high temperature resistance and strong adhesive force with the base film, and reduces the probability of melting and breaking the base film in the printing process.
Description
Technical Field
The invention relates to a heat-resistant coating for a thermal transfer carbon ribbon, a preparation method and a coating process thereof, and belongs to the technical field of thermal transfer carbon ribbons.
Background
The thermal digital printer transfers the specific information carrier to the substrate by using the thermal transfer carbon belt to form two-dimensional codes, bar codes, pictures, characters and the like. The heat transfer technology is widely applied to the fields of modern bills, clothing labels, medicine packaging, manufacturing industry and the like, and has wide application and large dosage due to the automatic identification function.
The transfer printing carbon belt is a core material in the operation process of a thermal transfer printer and consists of a heat-resistant coating, a PET (polyethylene terephthalate) base film, a bottom coating, ink and the like, and when the thermal transfer printing is carried out, the carbon belt can bear the action of instantaneous high temperature and pressure generated by a thermal head of the printer. The carbon ribbon base tape is a PET film of 4.5 μm to 6 μm, and the PET film starts to deform at about 210 ℃. Under the combined action of high temperature and external stretching force, the base film of the carbon ribbon product is easy to melt and break. In order to secure the printing effect, it is necessary to apply a heat-resistant coating on the back surface of the base film. The following requirements are imposed on the heat-resistant coating in actual production: the heat-resistant coating has high heat resistance to ensure that the PET substrate is not damaged when contacting the thermal head, the friction coefficient is small when contacting the thermal head to ensure smooth transfer process, and the heat-resistant coating has good adhesion performance with the PET substrate film to ensure that the thermal head is not polluted in the printing process.
In recent years, reports on environmental protection performance and printing performance of thermal transfer carbon tapes have exhibited explosive growth. The invention patent (CN201910930458. X) discloses a thermal transfer carbon tape used in the bill printing process, wherein the residual ink layer after printing can be easily scraped off, and no printing trace is left on the base tape. The invention patent of ionic liquid modified bar code carbon ribbon back coating paint and a preparation method thereof (CN 201810674167.4) reports that a polyacrylate back gummed high molecular chain is introduced into an ionic liquid containing double bonds in a block polymerization mode to produce a low-resistivity high molecular heat-resistant coating material, the bar code carbon ribbon is coated, and the printing quality of the heat transfer carbon ribbon is improved. However, the above patent still has the problem that the heat resistance and the adhesion property of the heat-resistant coating material are insufficient, and the phenomena of tape breakage and tape sticking occur under the production condition of high-temperature continuous printing, and the heat resistance and the adhesion of the heat-resistant coating material are still required to be improved.
Disclosure of Invention
The invention aims to solve the technical problem of providing a heat-resistant coating for a thermal transfer carbon ribbon, a preparation method and a coating process thereof, wherein titanium acetylacetonate is mixed into high polymer chains such as alpha, omega-dihydroxypolysiloxane, methacryloxypropyl trimethoxysilane, dibutyl tin dilaurate and the like taking hydroxyl as a terminal group, so that the activation energy of the high polymer chains is improved, higher energy barriers are needed to be overcome when the high polymer chains are degraded, more energy is absorbed, and the high temperature resistance of the heat-resistant coating for the thermal transfer carbon ribbon is effectively improved.
The invention is realized by the following scheme: a heat-resistant coating for a thermal transfer carbon ribbon is prepared by mixing titanium acetylacetonate, alpha, omega-dihydroxypolysiloxane taking hydroxyl as a terminal group, methacryloxypropyl trimethoxysilane, dibutyl tin dilaurate and an organic solvent.
The contents of the above components are as follows: the paint comprises, by weight, 1-3 parts of titanium acetylacetonate, 200-220 parts of alpha, omega-dihydroxypolysiloxane with hydroxyl as a terminal group, 18-22 parts of methacryloxypropyl trimethoxysilane, 2.8 parts of dibutyltin dilaurate and 7850-8850 parts of an organic solvent.
The organic solvent is one or more of dimethylbenzene, butanone and cyclohexanone.
A preparation method of a heat-resistant coating of a thermal transfer carbon ribbon comprises the following steps:
firstly, weighing titanium acetylacetonate, alpha, omega-dihydroxyl polysiloxane taking hydroxyl as a terminal group, methacryloxypropyl trimethoxysilane and an organic solvent, and stirring for 40-60 hours at room temperature to obtain an organic solution of the titanium acetylacetonate;
step two, adding an organic solvent into the solution obtained in the step one, and stirring for 2-4 hours;
weighing dibutyl tin dilaurate, adding an organic solvent into the dibutyl tin dilaurate, and stirring the mixture for 15 minutes at room temperature;
and step four, adding the solution obtained in the step three into the solution obtained in the step two, and stirring for 10-20 minutes to obtain the heat-resistant coating material for the thermal transfer carbon ribbon.
A coating process of a heat-resistant coating of a thermal transfer carbon ribbon, comprising the steps of:
step one, driving a PET (polyethylene terephthalate) base film to move by a driving shaft, fixing a coating plate, and uniformly coating a heat-resistant coating material of a thermal transfer carbon belt on the surface of the PET base film;
scraping off redundant heat-resistant coating materials on the surface of the PET base film by adopting a trowelling device so as to ensure the consistency of the coating thickness;
step three, driving the PET base film coated with the heat-resistant coating material to pass through a 15-meter long oven horizontally by a driving shaft to volatilize the solvent, wherein the titanium acetylacetonate and-OH, -NH in the PET base film 2 ，-CONH 2 The isoactive groups undergo a crosslinking reaction to increase the molecular weight, improve the adhesion of the heat-resistant coating material and the PET substrate, and then the other drive the reactionThe shaft is transported out.
The trowelling device that step two adopted includes device main part, trowelling deflector roll, scraper mechanism and flattening roller, trowelling deflector roll scraper mechanism with the flattening roller all sets up inside the device main part, the inside backing plate that still is equipped with of device main part, trowelling deflector roll is located the front side of backing plate, scraper mechanism and flattening roller are located the upside of backing plate, the flattening roller is located scraper mechanism's rear side, the PET base film of taking heat-resisting coating loops through trowelling deflector roll scraper mechanism with between the backing plate the flattening roller with between the backing plate.
The two scraping plate mechanisms are arranged, are arranged front and back, and run in turn.
The scraper mechanism comprises a paint collecting box, a middle shaft and a scraper, wherein a connecting plate is arranged on the front side of the paint collecting box, the middle shaft vertically penetrates through the connecting plate, the front end and the rear end of the middle shaft are connected to the front side wall and the rear side wall of the device main body, the scraper is connected to the lower end of the connecting plate, and a paint collecting inlet is formed between the upper end of the connecting plate and the upper side wall of the paint collecting box.
The center shaft drives the connecting plate, the paint collecting box and the scraping plate to rotate under the control of the control device, the scraping plate is of a cambered surface structure, and the front side of the connecting plate is of an inclined surface structure.
And in the third step, the movement speed of the PET base film coated with the heat-resistant coating material in the oven is 290-310 m/min, and the drying temperature is 105-115 ℃.
The beneficial effects of the invention are as follows:
1. according to the invention, titanium acetylacetonate is added into alpha, omega-dihydroxypolysiloxane taking hydroxyl as a terminal group, methacryloxypropyl trimethoxysilane and dibutyl tin dilaurate to prepare a heat-resistant coating material, and after the prepared heat-resistant coating material is coated on the surface of a PET (polyethylene terephthalate) base film, the effective printing temperature level of a carbon ribbon can be increased to 128 ℃, the heat resistance performance of the carbon ribbon exceeding 125 ℃ is improved, and the probability of melting fracture of the base film in the printing process is obviously reduced;
2. the invention drives the coated PET base film to pass through the oven, thus greatly improving the drying speed and the production speed of the heat-resistant coating, and simultaneously, after the solvent volatilizes, the titanium acetylacetonate can be mixed with-OH, -NH in the PET base film 2 ，-CONH 2 The equal active groups undergo a crosslinking reaction, so that the molecular weight is increased after bridging is formed, and the adhesive force between the heat-resistant coating material and the PET substrate is improved;
3. the invention has simple process, meets the requirements of actual production process of factories, and improves the enterprise competitiveness while improving the heat-resistant coating performance of the heat transfer carbon belt.
4. The trowelling device is provided with 2 scraper mechanisms, one scraper mechanism can clean attachments on the scraper during operation, the other scraper mechanisms are reserved for each other, one scraper mechanism is broken, the other scraper mechanism can be used, and the stability of the trowelling process is ensured.
Drawings
FIG. 1 is a schematic flow chart of a coating process of a heat-resistant coating of a thermal transfer carbon ribbon.
Fig. 2 is a schematic diagram showing a front sectional structure of a trowelling device in a coating process of a heat-resistant coating of a thermal transfer carbon ribbon.
Fig. 3 is a schematic diagram showing a cross-sectional elevation structure of a squeegee mechanism in a use state in a coating process of a heat-resistant coating of a thermal transfer carbon ribbon according to the present invention.
Fig. 4 is a schematic diagram showing a cross-sectional elevation structure of a squeegee mechanism in a non-use state in a coating process of a heat-resistant coating of a thermal transfer carbon ribbon according to the invention.
FIG. 5 is a schematic representation of the crosslinking of titanium acetylacetonate with the active groups (-OH) of an alpha, omega-dihydroxypolysiloxane.
In the figure: 1 is a driving shaft, 2 is a PET base film, 3 is a trowelling device, 4 is an oven, 5 is a device main body, 6 is a trowelling guide roller, 7 is a scraping plate mechanism, 8 is a trowelling roller, 9 is a backing plate, 10 is a paint collecting box, 11 is a central shaft, 12 is a scraping plate, 13 is a connecting plate, and 14 is a paint collecting inlet.
Detailed Description
The invention is further described in connection with fig. 1-5, but the scope of the invention is not limited to this.
Wherein like parts are designated by like reference numerals. It should be noted that the words "front", "back", "left", "right", "up" and "down" used in the following description refer to directions in the drawings, the words "inner" and "outer" refer to directions toward or away from a geometric center of a particular component, respectively, and the drawings are in a very simplified form and all use non-precise ratios for convenience and clarity only to aid in explaining embodiments of the present invention.
In the following description, well-known functions and constructions are not described in detail for clarity of understanding, since they would obscure the invention with unnecessary detail, it is to be understood that in the development of any actual embodiment, numerous implementation details must be made to achieve the developer's specific goals, such as compliance with system-related or business-related constraints, that will vary from one embodiment to another, and that will be appreciated that such a development effort may be complex and time-consuming, but will be merely routine for one of ordinary skill in the art.
Example 1: a preparation method of a heat-resistant coating material for a thermal transfer carbon ribbon (the organic solvent is dimethylbenzene).
Firstly, weighing 1g of titanium acetylacetonate, 200g of alpha, omega-dihydroxypolysiloxane with hydroxyl as a terminal group, 18g of methacryloxypropyl trimethoxysilane, 1000g of xylene, and uniformly mixing, and stirring at room temperature for 40 hours to obtain an organic solution of titanium acetylacetonate;
step two, adding 2000g of dimethylbenzene into the solution obtained in the step one, and stirring for 2 hours;
step three, weighing 2.8g of dibutyltin dilaurate, adding 4850g of dimethylbenzene into the dibutyltin dilaurate, and stirring the mixture for 15 minutes at room temperature;
and step four, adding the solution obtained in the step three into the solution obtained in the step two, and stirring for 10 minutes to obtain the heat-resistant coating material of the heat transfer carbon belt.
The heat-resistant coating material prepared in example 1 was applied to the coating process shown in example 6, and the prepared thermal transfer carbon ribbon was printed in full black: the effective printing temperature level of the carbon tape can be improved to 128 ℃ set in the western iron city printer S621C, the label paper is flawless, and the PET base film is flawless. 62 sheets per minute can be printed in continuous printing.
Example 2: a preparation method of a heat-resistant coating material for a thermal transfer carbon ribbon (butanone is an organic solvent).
Step one, weighing 2g of titanium acetylacetonate, 210g of alpha, omega-dihydroxypolysiloxane taking hydroxyl as a terminal group, 20g of methacryloxypropyl trimethoxysilane and 2000g of butanone, and stirring at room temperature for 50 hours to obtain an organic solution of the titanium acetylacetonate;
step two, adding 2000g of butanone into the solution obtained in the step one, and stirring for 3 hours;
step three, weighing 2.8g of dibutyltin dilaurate, adding 4000g of butanone into the dibutyltin dilaurate, and stirring the mixture for 15 minutes at room temperature;
and step four, adding the solution obtained in the step three into the solution obtained in the step two, and stirring for 15 minutes to obtain the heat-resistant coating material of the heat transfer carbon ribbon.
When the heat-resistant coating material prepared in example 2 was subjected to the coating process shown in example 7, the thermal transfer carbon ribbon was prepared by full black printing: the effective printing temperature level of the carbon tape can be improved to 128 ℃ set in the western iron city printer S621C, the label paper is flawless, and the PET base film is flawless. 63 sheets per minute can be printed in continuous printing.
Example 3: a preparation method of a heat-resistant coating material for a thermal transfer carbon ribbon (the organic solvent is cyclohexanone).
Step one, weighing 3g of titanium acetylacetonate, 220g of alpha, omega-dihydroxypolysiloxane taking hydroxyl as a terminal group, 22g of methacryloxypropyl trimethoxysilane, 1500g of cyclohexanone, and stirring at room temperature for 60 hours to obtain an organic solution of titanium acetylacetonate;
step two, adding 1500g of cyclohexanone into the solution obtained in the step one, and stirring for 4 hours;
step three, weighing 2.8g of dibutyltin dilaurate, adding 5850g of cyclohexanone into the dibutyltin dilaurate, and stirring the mixture for 15 minutes at room temperature;
and step four, adding the solution obtained in the step three into the solution obtained in the step two, and stirring for 20 minutes to obtain the heat-resistant coating material of the heat transfer carbon ribbon.
When the heat-resistant coating material prepared in example 3 was subjected to the coating process shown in example 8, the thermal transfer carbon ribbon was prepared by full black printing: the effective printing temperature level of the carbon tape can be improved to 128 ℃ set in the western iron city printer S621C, the label paper is flawless, and the PET base film is flawless. 65 sheets can be printed per minute in continuous printing.
Example 4: the preparation method of the heat-resistant coating material for the thermal transfer carbon ribbon comprises the steps of (organic solvents are butanone and cyclohexanone).
Step one, weighing 3g of titanium acetylacetonate, 220g of alpha, omega-dihydroxypolysiloxane taking hydroxyl as a terminal group, 22g of methacryloxypropyl trimethoxysilane, 1000g of butanone and 1000g of cyclohexanone, and stirring at room temperature for 60 hours to obtain an organic solution of titanium acetylacetonate;
step two, adding 1500g of butanone and cyclohexanone into the solution obtained in the step one, and stirring for 4 hours;
step three, weighing 2.8g of dibutyltin dilaurate, adding 1900g of butanone and cyclohexanone into the dibutyltin dilaurate, and stirring the mixture for 15 minutes at room temperature;
and step four, adding the solution obtained in the step three into the solution obtained in the step two, and stirring for 20 minutes to obtain the heat-resistant coating material of the heat transfer carbon ribbon.
When the heat-resistant coating material prepared in example 4 was subjected to the coating process shown in example 9, the thermal transfer carbon ribbon was prepared by full black printing: the effective printing temperature level of the carbon tape can be improved to 128 ℃ set in the western iron city printer S621C, the label paper is flawless, and the PET base film is flawless. 65 sheets can be printed per minute in continuous printing.
Example 5: the preparation process of heat transfer carbon belt heat resisting coating material includes the steps of preparing heat resisting coating material with xylene and butanone as organic solvent.
Step one, weighing 2.5g of titanium acetylacetonate, 210g of alpha, omega-dihydroxypolysiloxane taking hydroxyl as a terminal group, 20g of methacryloxypropyl trimethoxysilane, 1000g of dimethylbenzene and 1000g of butanone, and stirring at room temperature for 50 hours to obtain an organic solution of the titanium acetylacetonate;
step two, adding 1000g of dimethylbenzene and butanone into the solution obtained in the step one, and stirring for 3 hours;
step three, weighing 2.8g of dibutyltin dilaurate, adding 2000g of dimethylbenzene and butanone into the dibutyltin dilaurate, and stirring the mixture at room temperature for 15 minutes;
and step four, adding the solution obtained in the step three into the solution obtained in the step two, and stirring for 15 minutes to obtain the heat-resistant coating material of the heat transfer carbon ribbon.
When the heat-resistant coating material prepared in example 5 was subjected to the coating process shown in example 10, the thermal transfer carbon ribbon was prepared by full black printing: the effective printing temperature level of the carbon tape can be improved to 128 ℃ set in the western iron city printer S621C, the label paper is flawless, and the PET base film is flawless. 65 sheets can be printed per minute in continuous printing.
Example 6: a coating process of a heat-resistant coating of a thermal transfer carbon ribbon.
The drive shaft drives the PET base film to move, and the speed of the carbon belt is 290 meters/min. The coating plate was fixed, and the heat-resistant coating material for the thermal transfer carbon ribbon prepared in example 1 was uniformly transferred thereto and uniformly coated on the surface of the PET base film. And scraping off redundant heat-resistant coating materials on the surface of the PET base film by adopting a trowelling device so as to ensure the consistency of the coating thickness. The PET base film coated with the heat-resistant coating material was passed through a 15-meter-long oven at a speed of 290 meters/minute to improve the adhesion property of the heat-resistant coating material to the PET base film, wherein the oven temperature was 105 ℃. In the trowelling process, one scraper mechanism 7 is controlled to operate, the other scraper mechanism 7 rotates for 90 degrees, after a certain amount of waste materials are scraped on the scraper 12, the middle shaft 11 rotates for 90 degrees, the scraped materials can enter the paint collecting box 10 from the paint collecting inlet 14 for utilization, the two scraper mechanisms 7 operate in turn, and one of the two scraper mechanisms is used for recycling the materials when the other scraper mechanism operates.
When the heat-resistant coating material prepared in example 2 is applied to the heat-resistant coating process in example 6, the prepared thermal transfer carbon ribbon is printed in full black: the effective printing temperature level of the carbon tape can be improved to 128 ℃ set in the western iron city printer S621C, the label paper is flawless, and the PET base film is flawless. 63 sheets per minute can be printed in continuous printing.
Example 7: a coating process of a heat-resistant coating of a thermal transfer carbon ribbon.
The drive shaft drives the PET base film to move, and the speed of the carbon belt is 300 m/min. The coated plate was fixed, and the heat-resistant coating material prepared in example 2 was transferred thereto at a constant speed and uniformly coated on the surface of the PET base film. And scraping off redundant heat-resistant coating materials on the surface of the PET base film by adopting a trowelling device so as to ensure the consistency of the coating thickness. The PET base film coated with the heat-resistant coating material was passed through a 15-meter-long oven at a speed of 300 meters/minute to improve the adhesion property of the heat-resistant coating material to the PET base film, wherein the oven temperature was 110 ℃. In the trowelling process, one scraper mechanism 7 is controlled to operate, the other scraper mechanism 7 rotates for 90 degrees, after a certain amount of waste materials are scraped on the scraper 12, the middle shaft 11 rotates for 90 degrees, the scraped materials can enter the paint collecting box 10 from the paint collecting inlet 14 for utilization, the two scraper mechanisms 7 operate in turn, and one of the two scraper mechanisms is used for recycling the materials when the other scraper mechanism operates.
When the heat-resistant coating material prepared in example 3 is applied to the heat-resistant coating process in example 7, the prepared thermal transfer carbon ribbon is printed in full black: the effective printing temperature level of the carbon tape can be improved to 128 ℃ set in the western iron city printer S621C, the label paper is flawless, and the PET base film is flawless. 65 sheets can be printed per minute in continuous printing.
Example 8: a coating process of a heat-resistant coating of a thermal transfer carbon ribbon.
The drive shaft driven the PET base film to move at a carbon belt speed of 310 m/min, the coating plate was fixed, and the heat-resistant coating material prepared in example 3 was uniformly transferred thereto and uniformly coated on the surface of the PET base film. And scraping off redundant heat-resistant coating materials on the surface of the PET base film by adopting a trowelling device so as to ensure the consistency of the coating thickness. The PET base film coated with the heat-resistant coating material was passed through a 15-meter-long oven at a speed of 310 meters/minute to improve the adhesion property of the heat-resistant coating material to the PET base film, wherein the oven temperature was 115 ℃. In the trowelling process, one scraper mechanism 7 is controlled to operate, the other scraper mechanism 7 rotates for 90 degrees, after a certain amount of waste materials are scraped on the scraper 12, the middle shaft 11 rotates for 90 degrees, the scraped materials can enter the paint collecting box 10 from the paint collecting inlet 14 for utilization, the two scraper mechanisms 7 operate in turn, and one of the two scraper mechanisms is used for recycling the materials when the other scraper mechanism operates.
When the heat-resistant coating material prepared in example 4 was applied to the heat-resistant coating process of example 8, the prepared thermal transfer carbon ribbon was printed in full black: the effective printing temperature level of the carbon tape can be improved to 128 ℃ set in the western iron city printer S621C, the label paper is flawless, and the PET base film is flawless. 65 sheets can be printed per minute in continuous printing.
Example 9: a coating process of a heat-resistant coating of a thermal transfer carbon ribbon.
The drive shaft drives the PET base film to move, and the speed of the carbon belt is 295 m/min. The coating plate was fixed, and the heat-resistant coating material for a thermal transfer carbon ribbon prepared in example 4 was uniformly transferred thereto and uniformly coated on the surface of the PET base film. And scraping off superfluous heat-resistant coating materials on the surface of the PET base film by adopting a trowelling device so as to ensure the consistency of the coating thickness. The PET base film coated with the heat-resistant coating material was passed through a 15-meter-long oven at a speed of 300 meters/minute to improve the adhesion property of the heat-resistant coating material to the PET base film, wherein the oven temperature was 115 ℃. In the trowelling process, one scraper mechanism 7 is controlled to operate, the other scraper mechanism 7 rotates for 90 degrees, after a certain amount of waste materials are scraped on the scraper 12, the middle shaft 11 rotates for 90 degrees, the scraped materials can enter the paint collecting box 10 from the paint collecting inlet 14 for utilization, the two scraper mechanisms 7 operate in turn, and one of the two scraper mechanisms is used for recycling the materials when the other scraper mechanism operates.
When the heat-resistant coating material prepared in example 5 is applied to the heat-resistant coating process in example 9, the prepared thermal transfer carbon ribbon is printed in full black: the effective printing temperature level of the carbon tape can be improved to 128 ℃ set in the western iron city printer S621C, the label paper is flawless, and the PET base film is flawless. 66 sheets can be printed per minute in continuous printing.
Example 10: a coating process of a heat-resistant coating of a thermal transfer carbon ribbon.
The drive shaft drives the PET base film to move, and the speed of the carbon belt is 290 meters/min. The coating plate was fixed, and the heat-resistant coating material for a thermal transfer carbon ribbon prepared in example 5 was uniformly transferred thereto and uniformly coated on the surface of the PET base film. And scraping off redundant heat-resistant coating materials on the surface of the PET base film by adopting a trowelling device so as to ensure the consistency of the coating thickness. The PET base film coated with the heat-resistant coating material was passed through a 15-meter-long oven at a speed of 290 meters/minute to improve the adhesion property of the heat-resistant coating material to the PET base film, wherein the oven temperature was 109 ℃. In the trowelling process, one scraper mechanism 7 is controlled to operate, the other scraper mechanism 7 rotates for 90 degrees, after a certain amount of waste materials are scraped on the scraper 12, the middle shaft 11 rotates for 90 degrees, the scraped materials can enter the paint collecting box 10 from the paint collecting inlet 14 for utilization, the two scraper mechanisms 7 operate in turn, and one of the two scraper mechanisms is used for recycling the materials when the other scraper mechanism operates.
When the heat-resistant coating material prepared in example 1 was applied to the heat-resistant coating process of example 10, the prepared thermal transfer carbon ribbon was printed in full black: the effective printing temperature level of the carbon tape can be improved to 128 ℃ set in the western iron city printer S621C, the label paper is flawless, and the PET base film is flawless. 63 sheets per minute can be printed in continuous printing.
While the invention has been described and illustrated in considerable detail, it should be understood that modifications and equivalents to the above-described embodiments will become apparent to those skilled in the art, and that such modifications and improvements may be made without departing from the spirit of the invention.
Claims (10)
1. A thermal transfer ribbon heat resistant coating, characterized by: the titanium acetylacetonate is prepared by mixing titanium acetylacetonate, alpha, omega-dihydroxypolysiloxane taking hydroxyl as a terminal group, methacryloxypropyl trimethoxysilane, dibutyl tin dilaurate and an organic solvent.
2. The heat transfer ribbon heat resistant coating of claim 1, wherein: the contents of the above components are as follows: the paint comprises, by weight, 1-3 parts of titanium acetylacetonate, 200-220 parts of alpha, omega-dihydroxypolysiloxane with hydroxyl as a terminal group, 18-22 parts of methacryloxypropyl trimethoxysilane, 2.8 parts of dibutyltin dilaurate and 7850-8850 parts of an organic solvent.
3. The heat transfer ribbon heat resistant coating of claim 1, wherein: the organic solvent is one or more of dimethylbenzene, butanone and cyclohexanone.
4. A method for preparing a heat-resistant coating of a thermal transfer carbon ribbon based on claim 1, which is characterized by comprising the following steps: the method comprises the following steps:
firstly, weighing titanium acetylacetonate, alpha, omega-dihydroxyl polysiloxane taking hydroxyl as a terminal group, methacryloxypropyl trimethoxysilane and an organic solvent, and stirring for 40-60 hours at room temperature to obtain an organic solution of the titanium acetylacetonate;
step two, adding an organic solvent into the solution obtained in the step one, and stirring for 2-4 hours;
weighing dibutyl tin dilaurate, adding an organic solvent into the dibutyl tin dilaurate, and stirring the mixture for 15 minutes at room temperature;
and step four, adding the solution obtained in the step three into the solution obtained in the step two, and stirring for 10-20 minutes to obtain the heat-resistant coating material for the thermal transfer carbon ribbon.
5. A process for coating a heat-resistant coating on a thermal transfer ribbon according to claim 1, which is characterized in that: which comprises the following steps:
step one, driving a shaft (1) to drive a PET base film (2) to move, fixing a coating plate, and uniformly coating a heat-resistant coating material of a thermal transfer carbon belt on the surface of the PET base film (2);
scraping off redundant heat-resistant coating materials on the surface of the PET base film (2) by adopting a trowelling device (3) to ensure the consistency of the coating thickness;
step three, driving a shaft (1) to drive the PET base film (2) coated with the heat-resistant coating material to horizontally pass through a 15-meter long oven (4) so as to volatilize the solvent, wherein the titanium acetylacetonate and-OH, -NH in the PET base film 2 ，-CONH 2 Equal activityThe splash groups undergo a crosslinking reaction, so that the molecular weight is increased, the adhesion of the heat-resistant coating material and the PET substrate is improved, and then the heat-resistant coating material is transported out through another driving shaft (1).
6. The coating process of the heat-resistant coating of the thermal transfer ribbon according to claim 5, wherein the trowelling device (3) adopted in the second step comprises a device main body (5), a trowelling guide roller (6), a scraping mechanism (7) and a flattening roller (8), wherein the trowelling guide roller (6), the scraping mechanism (7) and the flattening roller (8) are all arranged inside the device main body (5), a base plate (9) is further arranged inside the device main body (5), the trowelling guide roller (6) is positioned at the front side of the base plate (9), the scraping mechanism (7) and the flattening roller (8) are positioned at the upper side of the base plate (9), and the PET base film (2) with the heat-resistant coating sequentially passes through the trowelling guide roller (6), between the scraping mechanism (7) and the base plate (9) and between the flattening roller (8) and the base plate (9).
7. The coating process of a heat-resistant coating for a thermal transfer ribbon according to claim 6, wherein two of the squeegee mechanisms (7) are provided, and the two squeegee mechanisms (7) are disposed one behind the other and run in turn.
8. The coating process of a heat-resistant coating for a thermal transfer ribbon according to claim 6, wherein the squeegee mechanism (7) comprises a paint collecting box (10), a center shaft (11) and a squeegee (12), a connecting plate (13) is provided on the front side of the paint collecting box (10), the center shaft (11) vertically penetrates through the connecting plate (13), the front and rear ends of the center shaft (11) are connected to the front and rear side walls of the device main body (5), the squeegee (12) is connected to the lower end of the connecting plate (13), and a paint collecting inlet (14) is provided between the upper end of the connecting plate (13) and the upper side wall of the paint collecting box (10).
9. The coating process of the heat-resistant coating of the thermal transfer carbon ribbon according to claim 8, wherein the central shaft (11) drives the connecting plate (13), the coating collecting box (10) and the scraping plate (12) to rotate under the control of the control device, the scraping plate (12) is of an arc surface structure, and the front side of the connecting plate (13) is of an inclined surface structure.
10. The process for coating a heat-resistant coating on a heat-transfer carbon ribbon according to claim 5, wherein the movement speed of the PET base film (2) coated with the heat-resistant coating material in the third step in the oven (4) is 290 to 310 m/min, and the drying temperature is 105 to 115 ℃.
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