CN112322108A - Low-transfer black ink resin, preparation method thereof and industrial adhesive tape - Google Patents

Low-transfer black ink resin, preparation method thereof and industrial adhesive tape Download PDF

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Publication number
CN112322108A
CN112322108A CN202011305325.2A CN202011305325A CN112322108A CN 112322108 A CN112322108 A CN 112322108A CN 202011305325 A CN202011305325 A CN 202011305325A CN 112322108 A CN112322108 A CN 112322108A
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Prior art keywords
ink resin
low
black ink
agent
polyurethane
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Chinese (zh)
Inventor
吴荣斌
雷子函
叶绍京
蓝唐萍
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Dongguan Furukawa Tape Co ltd
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Dongguan Furukawa Tape Co ltd
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Priority to CN202011305325.2A priority Critical patent/CN112322108A/en
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00Inks
    • C09D11/02Printing inks
    • C09D11/10Printing inks based on artificial resins
    • C09D11/102Printing inks based on artificial resins containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00Inks
    • C09D11/02Printing inks
    • C09D11/03Printing inks characterised by features other than the chemical nature of the binder
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00Adhesives in the form of films or foils
    • C09J7/50Adhesives in the form of films or foils characterised by a primer layer between the carrier and the adhesive
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2433/00Presence of (meth)acrylic polymer
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2467/00Presence of polyester
    • C09J2467/006Presence of polyester in the substrate
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2475/00Presence of polyurethane
    • C09J2475/003Presence of polyurethane in the primer coating

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

Abstract

The invention provides a low-transfer black ink resin, a preparation method thereof and an industrial adhesive tape. The low-transfer black ink resin provided by the invention is prepared from the following raw materials in percentage by mass: 11.0 to 11.5 percent of polyurethane; 10.0% of carbon black; 2.10 to 2.75 percent of functional auxiliary agent; 1 to 3 percent of dispersant; 1.0 to 1.3 percent of isocyanate curing agent; the balance of solvent; the functional auxiliary agent is nitrocellulose. The black ink resin provided by the invention takes polyurethane as a main body, introduces nitrocellulose as a functional auxiliary agent, combines a dispersing agent and is matched with an isocyanate curing agent, so that the black ink resin has low transfer rate while the adhesiveness and the light shielding performance of the traditional ink are kept.

Description

Low-transfer black ink resin, preparation method thereof and industrial adhesive tape
Technical Field
The invention relates to the field of adhesive tapes, in particular to a low-transfer black ink resin, a preparation method thereof and an industrial adhesive tape.
Background
In the field of industrial tapes, black ink resin is often used to color a transparent film substrate and then coated with an organic adhesive to form a black industrial tape.
The traditional ink resin mainly comprises the following components in percentage by weight: the insulating carbon black is colored mainly with polymer resin. It has the following disadvantages: has higher transferability, and small molecular substances cracked from the adhesive are easy to diffuse into the organic adhesive, thereby causing larger influence on the performance of the adhesive.
Disclosure of Invention
In view of the above, the present invention aims to provide a low transfer black ink resin, a preparation method thereof and an industrial adhesive tape. The low transfer black ink resin provided by the invention has lower transfer rate while keeping the performance of the traditional ink.
The invention provides a low-transfer black ink resin which is prepared from the following raw materials in percentage by mass:
Figure BDA0002788154000000011
the functional auxiliary agent is nitrocellulose.
Preferably, the dispersing agent is selected from one or more silane coupling agents.
Preferably, the isocyanate curing agent is diphenylmethane diisocyanate.
Preferably, the solvent is selected from one or more of benzene solvents and ketone solvents.
Preferably, the particle size of the carbon black is 0.5-10 μm.
The invention also provides a preparation method of the low transfer black ink resin in the technical scheme, which comprises the following steps:
and mixing the polyurethane, the carbon black, the functional auxiliary agent, the dispersing agent, the isocyanate curing agent and the solvent to obtain the low-transfer black ink resin.
Preferably, the mixing order is:
firstly, uniformly mixing polyurethane, carbon black and a solvent, then adding a functional auxiliary agent, uniformly mixing, then adding a dispersing agent, uniformly mixing, and finally adding an isocyanate curing agent, and uniformly mixing.
The present invention also provides an industrial adhesive tape comprising:
a thin film substrate layer;
the coloring coating is compounded on the surface of the film base material layer;
the adhesive layer is compounded on the surface of the colored coating;
the colored coating is formed by the low-transfer black ink resin in the technical scheme or the low-transfer black ink resin prepared by the preparation method in the technical scheme.
Preferably, the film base material layer is a transparent polyester film base material layer.
Preferably, the adhesive forming the adhesive layer is a polyacrylate adhesive.
The invention provides a low-transfer black ink resin which is prepared from the following raw materials in percentage by mass: 11.0 to 11.5 percent of polyurethane; 10.0% of carbon black; 2.10 to 2.75 percent of functional auxiliary agent; 1 to 3 percent of dispersant; 1.0 to 1.3 percent of isocyanate curing agent; the balance of solvent; the functional auxiliary agent is nitrocellulose. The black ink resin provided by the invention takes polyurethane as a main body, introduces nitrocellulose as a functional auxiliary agent, combines a dispersing agent and is matched with an isocyanate curing agent, so that the black ink resin has low transfer rate while the adhesiveness and the light shielding performance of the traditional ink are kept. The experimental result shows that the transfer rate of the black ink resin provided by the invention is below 10%.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an industrial adhesive tape provided by the invention.
Detailed Description
The invention provides a low-transfer black ink resin which is prepared from the following raw materials in percentage by mass:
Figure BDA0002788154000000031
the functional auxiliary agent is nitrocellulose.
The black ink resin provided by the invention takes polyurethane as a main body, introduces nitrocellulose as a functional auxiliary agent, combines a dispersing agent and is matched with an isocyanate curing agent, so that the black ink resin has lower transfer rate while keeping the coloring and shading performance of the traditional ink.
According to the invention, polyurethane is taken as a polymer main body, and specific functional auxiliary agent nitrocellulose is introduced, a-NCO active functional group of the polyurethane can be grafted and combined with nitrocellulose molecules, the nitrocellulose molecules can be filled in a polyurethane network structure, so that the effects of end capping and structure enhancement are achieved, the weather resistance and chemical stability of the ink are improved, small molecules are not easy to crack under a high-temperature environment, the transfer rate is reduced, and the effects cannot be achieved if other polymer resins and other functional auxiliary agents are replaced.
In the invention, the content of polyurethane in the ink is 11.0-11.5%; in some embodiments of the invention, the content is 11.0%. In the invention, the content of the functional auxiliary agent in the ink is 2.10-2.75%; in some embodiments of the invention, the content is 2.10%, 2.50%, or 2.70%.
In the present invention, carbon black is used as a colorant, and the carbon black is preferably insulating carbon black. In the invention, the granularity of the carbon black is preferably 0.5-10 μm, if the granularity of the carbon black is too high, the surface of the coated ink is rough, and if the granularity of the carbon black is too low, the carbon black is easy to agglomerate in a dispersion process, so that the dispersion effect is poor, and the use function and the transfer rate of the ink are influenced. In the present invention, the content of the carbon black in the ink is 10.0%, and if the content is too low, the non-blackness of the ink is insufficient, and it is difficult to achieve the effect of uniform coating and good masking property, and if the content is too high, the surface is rough and the ink adhesion is deteriorated due to too large nonvolatile components, and the ink is easily separated from the substrate.
In the invention, the dispersing agent is preferably one or more of silane coupling agents. The silane coupling agent is preferably one or more of vinyl silane coupling agents; in some embodiments of the invention, the dispersant is vinyl dimethicone. The dispersing agent is beneficial to uniform dispersion of materials and can promote uniform reaction and grafting of polyurethane, carbon black and functional auxiliaries.
In the invention, the content of the dispersant in the ink is 1-3%; in some embodiments of the invention, the content is 2%.
In the present invention, the isocyanate-based curing agent is preferably diphenylmethane diisocyanate (i.e., MDI). In the invention, the content of the isocyanate curing agent in the printing ink is 1.0-1.3%; in some embodiments of the invention, the content is 1%.
In the invention, the solvent is preferably one or more of benzene solvents and ketone solvents; more preferably one or more of toluene and methyl ethyl ketone. In the invention, the solvent is the balance, namely the balance is the solvent except the components, and the solvent makes up 100% of the ink formula.
The invention also provides a preparation method of the low transfer black ink resin in the technical scheme, which is characterized by comprising the following steps:
and mixing the polyurethane, the carbon black, the functional auxiliary agent, the dispersing agent, the isocyanate curing agent and the solvent to obtain the low-transfer black ink resin.
The types, the amounts and the like of the polyurethane, the carbon black, the functional assistant, the dispersant, the isocyanate curing agent and the solvent are the same as those in the technical scheme, and are not described in detail herein.
Wherein the mixing sequence is as follows: firstly, uniformly mixing polyurethane, carbon black and a solvent, then adding a functional auxiliary agent, uniformly mixing, then adding a dispersing agent, uniformly mixing, and finally adding an isocyanate curing agent, and uniformly mixing. According to the invention, the ink can obtain good usability and lower transfer rate through the specific mixing sequence, if the mixing sequence is disturbed, all the raw materials are directly mixed and added, for example, an isocyanate curing agent is added firstly, polyurethane can be crosslinked in advance, and after a network structure is formed, the polyurethane is difficult to be grafted and filled with carbon black and a functional auxiliary agent, so that the mixing and blending performance is poor; polyurethane, carbon black and a functional assistant are uniformly reacted and grafted under the action of a dispersing agent, and then an isocyanate curing agent is introduced to fix a network structure of the polyurethane, so that the ink has low transfer rate while retaining the adhesiveness and the light shielding performance of the traditional ink. In the invention, when the polyurethane, the carbon black and the solvent are mixed, the mixing stirring speed is preferably 1000-1500 rpm, and the time is preferably 45-60 min. After the functional auxiliary agent is added, the mixing stirring speed is preferably 600-1000 rpm, and the time is preferably 25-30 min. After the dispersing agent is added, the mixing stirring speed is preferably 600-1000 rpm, and the time is preferably 20-25 min. After the isocyanate curing agent is added, the mixing stirring speed is preferably 400-600 rpm, and the mixing time is preferably 25-30 min. Wherein the temperature of each mixing is not particularly limited, and the mixing can be carried out at room temperature, and the temperature can be 20-26 ℃. And (4) obtaining the black ink after the mixing treatment.
The present invention also provides an industrial adhesive tape, comprising:
a thin film substrate layer;
the coloring coating is compounded on the surface of the film base material layer;
the adhesive layer is compounded on the surface of the colored coating;
the colored coating is formed by the low-transfer black ink resin in the technical scheme or the low-transfer black ink resin prepared by the preparation method in the technical scheme.
Referring to fig. 1, fig. 1 is a schematic structural view of an industrial adhesive tape provided by the present invention; wherein, 1 is a film substrate layer, 2 is a coloring coating layer, and 3 is an adhesive layer.
The film base layer 1 is preferably a transparent polyester film as a base material of an industrial tape. The thickness of the film substrate layer 1 is preferably 0.012 to 0.1 mm.
The coloring coating layer 2 is formed by the low-transfer black ink resin in the technical scheme, and the film base material layer 1 is colored by the black ink and then coated with an organic adhesive, so that the film base material layer is easier to coat. The thickness of the colored coating layer 2 is preferably 0.003 to 0.01 mm.
The adhesive in the adhesive layer 3 is preferably a polyacrylate adhesive, which is obtained by homopolymerization of ethyl acrylate. The thickness of the adhesive layer 3 is preferably 0.01 to 0.025 mm.
The method for preparing the industrial adhesive tape is not particularly limited, and the industrial adhesive tape can be prepared according to a conventional preparation method well known to those skilled in the art. According to the industrial adhesive tape provided by the invention, the colored coating 2 has a low transfer rate, so that the influence on the performance of the adhesive can be reduced, and the usability of the industrial adhesive tape is ensured.
For a further understanding of the invention, reference will now be made to the preferred embodiments of the invention by way of example, and it is to be understood that the description is intended to further illustrate features and advantages of the invention, and not to limit the scope of the claims.
Examples 1 to 3
The raw material components and the amounts used in examples 1 to 3 were prepared according to the formulations shown in table 1:
table 1 formulation of the starting materials of examples 1-3
TPU polyurethane Carbon black Functional auxiliary agent Vinyl polydimethylsiloxane Diphenylmethane diisocyanate Butanone
Example 1 11% 10% 2.1% 2% 1% Balance of
Example 2 11% 10% 2.5% 2% 1% Balance of
Example 3 11% 10% 2.7% 2% 1% Balance of
Preparation:
putting polyurethane, carbon black and a solvent into a stirrer, stirring at 1000rpm for 60min, adding a functional auxiliary agent, continuing to stir at 1000rpm for 20min, adding a dispersing agent, continuing to stir at 600rpm for 25min, and finally adding a curing agent, and stirring at 600rpm for 20min to obtain the black ink.
Comparative examples 1 to 3
The formula is as follows: the procedure of example 1 was followed except that the amounts of the components were adjusted, see in particular table 2:
TABLE 2 raw material formulations for comparative examples 1-3
TPU polyurethane Carbon black Functional auxiliary agent Vinyl polydimethylsiloxane Diphenylmethane diisocyanate Butanone
Comparative example 1 11% 10% 0% 2% 1% Balance of
Comparative example 2 15% 5% 0.5% 10% 1% Balance of
Comparative example 3 5% 15% 8% 0.5% 1% Balance of
Preparation: performed as in example 1.
Example 4
The black inks described in examples 1-3 and comparative examples 1-3 were tested for performance as follows:
testing adhesion force: refer to the national standard GB/T9283.
Testing the shading performance: refer to the industry Standard FZ/T01009-.
Testing transfer rate: taking two polyester film substrates (the thickness is 0.025mm), coating black ink on one of the polyester film substrates, and drying to form a coloring coating (the thickness is 0.005 mm); and coating a polyacrylate adhesive on the colored coating, and drying to form an adhesive layer (with the thickness of 0.025mm) to obtain the test sample adhesive tape. Meanwhile, a polyacrylate adhesive was coated on another polyester film substrate, and dried to form an adhesive layer (thickness 0.025mm), to obtain a reference sample tape. Testing the peeling force of the sample by a tensile machine; the transfer rate of the sample was calculated by the following formula: the transfer rate was 1- (tape peeling force of sample to be measured/tape peeling force of reference sample) × 100%.
The results of the performance tests on the tapes made with the inks of examples 1-3 and comparative examples 1-3 are shown in Table 3:
TABLE 3 Properties of the products of examples 1-3 and comparative examples 1-3
Figure BDA0002788154000000061
Figure BDA0002788154000000071
As can be seen from the test results in Table 3, the transfer rates of examples 1 to 3 of the present invention were greatly reduced while the adhesion and the light-shielding properties were maintained to be up to standards, as compared with those of comparative examples 1 to 3. Proved by adding the digestive cellulose into the polyurethane system and matching with other components according to a certain proportion, the transfer rate can be effectively reduced while the traditional performance of the printing ink is ensured.
The above description of the embodiments is only intended to facilitate the understanding of the method of the invention and its core idea. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The low-transfer black ink resin is characterized by being prepared from the following raw materials in percentage by mass:
Figure FDA0002788153990000011
the functional auxiliary agent is nitrocellulose.
2. The ink resin as claimed in claim 1, wherein the dispersant is one or more selected from silane coupling agents.
3. The ink resin according to claim 1, wherein the isocyanate-based curing agent is diphenylmethane diisocyanate.
4. The ink resin as claimed in claim 1, wherein the solvent is one or more selected from benzene solvents and ketone solvents.
5. The ink resin according to claim 1, wherein the particle size of the carbon black is 0.5 to 10 μm.
6. A method for preparing the low transfer black ink resin according to any one of claims 1 to 5, comprising:
and mixing the polyurethane, the carbon black, the functional auxiliary agent, the dispersing agent, the isocyanate curing agent and the solvent to obtain the low-transfer black ink resin.
7. The method of claim 6, wherein the mixing is in the order of:
firstly, uniformly mixing polyurethane, carbon black and a solvent, then adding a functional auxiliary agent, uniformly mixing, then adding a dispersing agent, uniformly mixing, and finally adding an isocyanate curing agent, and uniformly mixing.
8. An industrial adhesive tape, comprising:
a thin film substrate layer;
the coloring coating is compounded on the surface of the film base material layer;
the adhesive layer is compounded on the surface of the colored coating;
the colored coating layer is formed by the low transfer black ink resin of any one of claims 1 to 5 or the low transfer black ink resin prepared by the preparation method of any one of claims 6 to 7.
9. The industrial tape of claim 8, wherein the film substrate layer is a transparent mylar substrate layer.
10. The industrial tape of claim 8, wherein the adhesive forming the adhesive layer is a polyacrylate adhesive.
CN202011305325.2A 2020-11-19 2020-11-19 Low-transfer black ink resin, preparation method thereof and industrial adhesive tape Pending CN112322108A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114163874A (en) * 2021-12-29 2022-03-11 东莞市古川胶带有限公司 Black conductive ink for adhesive tape and preparation method and application thereof

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CN101868507A (en) * 2007-11-19 2010-10-20 考格尼斯知识产权管理有限责任公司 Polyurethane resins for nitrocellulose inks
CN104277583A (en) * 2005-11-02 2015-01-14 太阳化学公司 Flexographic and gravure printing inks for nonwoven substrates
CN108841335A (en) * 2018-05-30 2018-11-20 宁波科莱恩新材料科技有限公司 A kind of black shading rubber belt and preparation method thereof

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CN104277583A (en) * 2005-11-02 2015-01-14 太阳化学公司 Flexographic and gravure printing inks for nonwoven substrates
CN101868507A (en) * 2007-11-19 2010-10-20 考格尼斯知识产权管理有限责任公司 Polyurethane resins for nitrocellulose inks
CN108841335A (en) * 2018-05-30 2018-11-20 宁波科莱恩新材料科技有限公司 A kind of black shading rubber belt and preparation method thereof

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CN114163874A (en) * 2021-12-29 2022-03-11 东莞市古川胶带有限公司 Black conductive ink for adhesive tape and preparation method and application thereof

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Application publication date: 20210205