CN110294817A - Organosilicon-modified acrylate emulsion and preparation method thereof, thermal transfer back coating liquid, heat transfer printing carbon tape back coating and carbon ribbon - Google Patents
Organosilicon-modified acrylate emulsion and preparation method thereof, thermal transfer back coating liquid, heat transfer printing carbon tape back coating and carbon ribbon Download PDFInfo
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- CN110294817A CN110294817A CN201910669619.4A CN201910669619A CN110294817A CN 110294817 A CN110294817 A CN 110294817A CN 201910669619 A CN201910669619 A CN 201910669619A CN 110294817 A CN110294817 A CN 110294817A
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- organosilicon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J31/00—Ink ribbons; Renovating or testing ink ribbons
- B41J31/05—Ink ribbons having coatings other than impression-material coatings
- B41J31/08—Ink ribbons having coatings other than impression-material coatings the coatings being superimposed on impression-transfer material
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/14—Methyl esters, e.g. methyl (meth)acrylate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
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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
- C09D143/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing boron, silicon, phosphorus, selenium, tellurium, or a metal; Coating compositions based on derivatives of such polymers
- C09D143/04—Homopolymers or copolymers of monomers containing silicon
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1804—C4-(meth)acrylate, e.g. butyl (meth)acrylate, isobutyl (meth)acrylate or tert-butyl (meth)acrylate
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Paints Or Removers (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Macromonomer-Based Addition Polymer (AREA)
Abstract
The present invention provides a kind of organosilicon-modified acrylate emulsion and preparation method thereof, thermal transfer back coating liquid, heat transfer printing carbon tape back coating and carbon ribbons, it is related to technical field of chemical paint, the organosilicon-modified acrylate emulsion includes the following raw material according to the mass fraction: 60-80 parts and 20-40 parts of organosilicon-modified acrylate activated monomer of acrylate monomer, the number-average molecular weight of the organosilicon-modified acrylate activated monomer is 5000-20000, and the chemical general formula of the organosilicon-modified acrylate activated monomer are as follows: R1‑Si(CH3)2‑(O‑Si(CH3)2)n‑O‑Si(CH3)2‑R2OCO‑C(CH3)=CH2；Organosilicon-modified acrylate emulsion provided by the invention, adhesion property is good, and solidification temperature is low, heat resistance and smooth functional, can effectively meet the needs of transfer process.
Description
Technical field
The present invention relates to technical field of chemical paint, more particularly, to a kind of organosilicon-modified acrylate emulsion and its system
Preparation Method, thermal transfer back coating liquid, heat transfer printing carbon tape back coating and carbon ribbon.
Background technique
Carbon ribbon back coating is the place that carbon ribbon is directly contacted with the print head of printer, and effect is in carbon ribbon (from winding
State) print head is protected during expansion, brilliant conductivity of heat is provided and is subtracted so that ink can be sent on medium
The formation of few electrostatic harmful for printer and printer operator, to extend the service life of print head.Due to
During thermal transfer, carbon ribbon need to undertake the high temperature of thermal printing head moment generation, it is therefore desirable to coat one in the side of substrate
Layer back coating, which not only needs heat resistance with higher, but also needs good smoothness to guarantee to transfer
The smoothness of process, it is often more important that the back coating will have excellent adhesion property with substrate, to ensure long-time transfer process
Do not fall glue, avoids print head pollution.The back coating that the country uses earliest is silicone resin system, but its solidification temperature
Height, it is poor to the adhesion property of substrate, and also service life is short, is unable to satisfy the needs of transfer process.
In view of this, the present invention is specifically proposed.
Summary of the invention
One of the objects of the present invention is to provide a kind of organosilicon-modified acrylate creams that can be used in preparing back coating
Liquid, existing using silicone resin system to alleviate, solidification temperature is high, the short skill with the poor adhesive force and service life of substrate
Art problem.
Organosilicon-modified acrylic emulsion provided by the invention,
The following raw material monomer is polymerize to obtain, the starting monomer includes:
(a) acrylate monomer of 60-80 mass parts；
(b) the organosilicon-modified acrylate activated monomer of 20-40 mass parts；R1-Si(CH3)2-(O-Si(CH3)2)n-O-
Si(CH3)2-OCO-C(CH3)-CH2=CH2；
The R1、R2Be each independently selected from hydrogen, halogen, hydroxyl, nitro, carbon atom number 3-20 it is substituted or non-substituted
The substituted or non-substituted unsaturation of alicyclic, the substituted or non-substituted aliphatic hydrocarbon of carbon atom number 1-20, carbon atom number 2-20
The substituted or non-substituted aromatic hydrocarbon of aliphatic hydrocarbon or carbon atom number 6-20；
The number-average molecular weight of the organosilicon-modified acrylate activated monomer is 5000-20000.
Further, the R1、R2Be each independently selected from hydrogen, halogen, hydroxyl, nitro, carbon atom number 3-6 substitution or
The substituted or non-substituted aliphatic hydrocarbon of non-substituted alicyclic, carbon atom number 1-4, carbon atom number 2-5 it is substituted or non-substituted
The substituted or non-substituted aromatic hydrocarbon of unsaturated aliphatic hydrocarbon, carbon atom number 6-12；
Preferably, the substituted or non-substituted alicyclic of the carbon atom number 3-6 be selected from cyclopropyl, cyclobutyl, cyclopenta,
One of methylcyclopropyl groups, ethyl cyclopropyl, methyl-cyclobutyl, ethylcyclobutyl and methylcyclopentyl；
Preferably, the substituted or non-substituted aliphatic hydrocarbon of the carbon atom number 1-4 is selected from methyl, ethyl, propyl, normal-butyl
One of with isobutyl group；
Preferably, the substituted or non-substituted unsaturated aliphatic hydrocarbon of the carbon atom number 2-5 be selected from vinyl, acrylic,
One of cyclobutenyl, pentenyl, methylpropenyl and methyl butene base；
Preferably, the substituted or non-substituted aromatic hydrocarbon of the carbon atom number 6-12 be selected from phenyl, tolyl, benzyl,
One of ethylbenzene, phenethyl, p-methylphenyl, aminomethyl phenyl, o-methyl-phenyl, 1,3,5- trimethylphenyl；
Preferably, the R1、R2It is each independently selected from one of methyl, ethyl, propyl, normal-butyl and isobutyl group；
Preferably, the organosilicon that the acrylate monomer and organosilicon-modified acrylate activated monomer polymerize changes
Property acrylate number-average molecular weight be 30,000-15 ten thousand, preferably 40,000-12 ten thousand；
Preferably, the number-average molecular weight of the organosilicon-modified acrylate activated monomer is 8000-12000.
Further, in the starting monomer, including acrylate monomer 65-78 mass parts and organosilicon-modified acrylic
Ester activated monomer 22-35 mass parts；
Preferably, in the starting monomer, the acrylate monomer be 65-72 mass parts, described organic-silicon-modified third
Olefin(e) acid ester activated monomer is 28-35 mass parts；
Preferably, the sum of the acrylate monomer and organosilicon-modified acrylate activated monomer are 100 mass parts.
Further, the acrylate monomer includes methyl acrylate, methyl methacrylate, ethyl acrylate, 2-
At least one of methyl methacrylate, ethyl 2-methacrylate, 2- butyl methacrylate and butyl acrylate；
Preferably, the acrylate monomer includes methyl methacrylate and butyl acrylate；
Preferably, in the acrylic monomers, the mass ratio of methyl methacrylate and butyl acrylate is (60-70):
(5-10), preferably (60-68): (5-10).
Further, the raw material of the organosilicon-modified acrylate emulsion further includes initiator and/or solvent；
Preferably, the dosage of the initiator is the sum of acrylate and organosilicon-modified acrylate activated monomer
0.2-0.8wt%, the preferably 0.3wt% of acrylate and organosilicon-modified acrylate activated monomer；
Preferably, the initiator is selected from peroxide type initiators, persulfuric acid salt initiator and azo-initiator
At least one of, preferably peroxide type initiators, more preferably dibenzoyl peroxide；
Preferably, the volume mass ratio of the sum of the organic solvent and described starting monomer is 100-150mL:100g；
Preferably, the organic solvent in benzene kind solvent, alcohol solvent, ketone solvent and ether solvent at least one
Kind；
Preferably, the solvent is organic solvent, and the organic solvent includes toluene, methanol, acetone, methyl acetate, first
At least one of ether and ether；
Preferably, the organic solvent is the mixed solution of toluene and methanol；
It is further preferred that the mass ratio of the toluene and methanol is (70-85): (15-30) in organic solvent.
The second object of the present invention is to provide the preparation method of above-mentioned organosilicon-modified acrylate emulsion, including as follows
Step: make acrylate monomer and organosilicon-modified acrylate activated monomer that polymerization reaction occur, obtain organic-silicon-modified third
Olefin(e) acid ester lotion；
Preferably, acrylate monomer and organosilicon-modified acrylate activated monomer are dissolved in solvent, then plus
Enter initiator, acrylate monomer and organosilicon-modified acrylate activated monomer occur polymerization reaction, obtain organic-silicon-modified
Acrylic acid ester emulsion；
Preferably, acrylate monomer and organosilicon-modified acrylate activated monomer are dissolved in solvent, are heated to
30-35 DEG C, add initiator；
Preferably, the initiator is divided into multiple addition.
The third object of the present invention is to provide a kind of thermal transfer back and applies lotion, and the thermal transfer back applies lotion mainly by this
The invention organosilicon-modified acrylate emulsion dilutes to obtain；
Preferably, the solid content that the thermal transfer back applies lotion is 15-25wt%, preferably 20wt%.
The fourth object of the present invention is to provide a kind of heat transfer printing carbon tape back coating, mainly by thermal transfer of the present invention
Back applies emulsion coating and obtains after drying on substrate；
Preferably, it is 0.05-0.12g/m that the thermal transfer back, which applies lotion coating weight on base material,2, preferably 0.05-
0.1g/m2。
The fifth object of the present invention is to provide a kind of carbon ribbon, and the carbon ribbon includes substrate, the side setting of the substrate
There is heat transfer printing carbon tape back coating；
Preferably, the other side of the substrate is provided with priming coat and ink layer, and the priming coat is set to the base
Between material and the ink layer.
The sixth object of the present invention is to provide the carbon ribbon in the application in thermal transfer field.
The present invention is prepared organosilicon by using acrylate monomer and organosilicon-modified acrylate for raw material and changes
Property acrylic acid ester emulsion so that organosilicon-acrylic resin emulsion can not only with substrate have good adhesion property, and solidify
Temperature is low, heat resistance and smooth functional, and when it, which is coated on, forms back coating on substrate, long service life, printing is made an uproar
Sound is low, can effectively meet the needs of transfer process.
Organosilicon-modified acrylate emulsion preparation process provided by the invention is simple, easy to operate, is easy to implement scale
Metaplasia produces, and reduces preparation cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of carbon ribbon provided by the invention.
1- substrate；2- heat transfer printing carbon tape back coating；3- priming coat；4- ink layer.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with embodiment, it is clear that described reality
Applying example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
Art personnel every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
According to an aspect of the present invention, the present invention provides a kind of organosilicon-modified acrylate emulsions, mainly by with
Lower starting monomer polymerize to obtain,
(a) acrylate monomer 60-80 mass parts；
(b) organosilicon-modified acrylate activated monomer 20-40 mass parts；
The molecular formula of the organosilicon-modified acrylate activated monomer are as follows:
R1-Si(CH3)2-(O-Si(CH3)2)n-O-Si(CH3)2-OCO-C(CH3)=CH2；
The R1、R2Be each independently selected from hydrogen, halogen, hydroxyl, nitro, carbon atom number 3-20 it is substituted or non-substituted
The substituted or non-substituted unsaturation of alicyclic, the substituted or non-substituted aliphatic hydrocarbon of carbon atom number 1-20, carbon atom number 2-20
The substituted or non-substituted aromatic hydrocarbon of aliphatic hydrocarbon or carbon atom number 6-20；
The number-average molecular weight of the organosilicon-modified acrylate activated monomer is 5000-20000.
In the present invention, the substituted or non-substituted alicyclic of carbon atom number 3-20 include but is not limited to carbon atom number be 3,
4,5,8,10,12,15,18 or 20 substituted or non-substituted alicyclic；The substituted or non-substituted fat of carbon atom number 1-20
Hydrocarbon includes but is not limited to the substituted or non-substituted aliphatic hydrocarbon that carbon atom number is 1,2,3,4,5,8,10,12,15,18 or 20；Carbon
The substituted or non-substituted unsaturated aliphatic hydrocarbon of atomicity 2-20 include but is not limited to carbon atom number be 2,3,4,5,8,10,12,
15,18 or 20 substituted or non-substituted fatty alkene or fatty alkynes；The substituted or non-substituted fragrance of carbon atom number 6-20
Hydrocarbon includes but is not limited to that carbon atom number is 6,7,8,10,12,15,18 or 20 substituted or non-substituted aromatic hydrocarbon.In the present invention, have
The number-average molecular weight for example 5000,8000,10000,12000,15000,18000 of machine fluorine-silicon modified acrylic ester activated monomer or
20000。
It is living using organosilicon-modified acrylate in the raw material of organosilicon-modified acrylate emulsion provided by the invention
Property monomer be raw material, it is easier to control the knot of the polymer of quality accounting and its generation of the organosilicon in the polymer of generation
Structure, so that the organosilicon-modified acrylate that organosilicon-modified acrylate activated monomer and acrylate monomer generate is poly-
It closes object and is not necessarily to high temperature, polymerization reaction can occur, so that solidification temperature reduces, heat resistance stronger with the adhesion property of substrate
Also better with smooth performance, when it being made to be coated on formation back coating on substrate, carbon ribbon service life effectively extends, and prints noise
It is effectively reduced, can effectively meet the needs of transfer process.In the preferred embodiment of the present invention, acrylate monomer
The number-average molecular weight for polymerizeing the organosilicon-modified acrylate generated with organosilicon-modified acrylate activated monomer is 30,000-15
Ten thousand, preferably 40,000-12 ten thousand.
Typical but non-limiting, acrylate monomer polymerize having for generation with organosilicon-modified acrylate activated monomer
The number-average molecular weight for example 30,000 of machine fluorine-silicon modified acrylic ester, 40,000,50,000,60,000,70,000,80,000,90,000,100,000,110,000,120,000,13
Ten thousand, 140,000 or 150,000.It is viscous with substrate with the raising of the silicone modified polyacrylate number-average molecular weight of generation
Attached performance enhancement, but when number-average molecular weight is higher than 150,000, the coating performance of obtained organosilicon-modified acrylic emulsion becomes
Difference is unfavorable for carrying out the coating of back coating, and when number-average molecular weight is lower than 30,000, adhesion property is poor, can not securely glue with substrate
It connects, especially when the number-average molecular weight of organosilicon-modified acrylate is 40,000-12 ten thousand, the not only painting for the lotion being prepared
Cloth is had excellent performance, and secured with substrate bonding.In a preferred embodiment of the invention, by using acrylate monomer and
Organosilicon-modified acrylate monomeric oligomeric object is raw material, it is easier to the number for the organosilicon-modified acrylate that control polymerization obtains
The quality accounting of average molecular weight, structure and organosilicon in the polymer, to make the organosilicon-modified acrylate being prepared
Lotion has superior adhesion property, smooth performance and heat resistance, when it, which is coated on, forms back coating on substrate, printing
Noise is smaller, and the service life is longer.
In the preferred embodiment of the present invention, R1、R2It is former to be each independently selected from hydrogen, halogen, hydroxyl, nitro, carbon
The substituted or non-substituted alicyclic of subnumber 3-6, the substituted or non-substituted aliphatic hydrocarbon of carbon atom number 1-4, carbon atom number 2-5
Unsaturated substituted or non-substituted aliphatic hydrocarbon, carbon atom number 6-12 substituted or non-substituted aromatic hydrocarbon when, it is easier to control system
The quality accounting and structure of organosilicon, are adhered to be more advantageous in standby obtained silicone modified polyacrylate
Performance, heat resistance and smooth performance more preferably organosilicon-modified acrylate emulsion.
In the preferred embodiment of the present invention, the substituted or non-substituted alicyclic choosing of the carbon atom number 3-6
From cyclopropyl, cyclobutyl, cyclopenta, methylcyclopropyl groups, ethyl cyclopropyl, methyl-cyclobutyl, ethylcyclobutyl and methyl ring penta
It is a kind of in base.In the preferred embodiment of the present invention, the substituted or non-substituted aliphatic hydrocarbon choosing of the carbon atom number 1-4
From one of methyl, ethyl, propyl, normal-butyl and isobutyl group.
In a kind of preferred embodiment of the present invention, the substituted or non-substituted unsaturated fat of the carbon atom number 2-5
Hydrocarbon is selected from one of vinyl, acrylic, cyclobutenyl, pentenyl, methylpropenyl and methyl butene base.
In the preferred embodiment of the present invention, the substituted or non-substituted aromatic hydrocarbon choosing of the carbon atom number 6-12
From phenyl, tolyl, benzyl, ethylbenzene, phenethyl, p-methylphenyl, aminomethyl phenyl, o-methyl-phenyl, 1,3,5- tri-
One of aminomethyl phenyl.
In present invention further optimization embodiment, the R1、R2It is each independently selected from hydrogen, methyl, ethyl, third
One of base, normal-butyl and isobutyl group.
In the preferred embodiment of the present invention, the number-average molecular weight of organosilicon-modified acrylate activated monomer is
When 8000-12000, adhesion property, heat resistance and the smooth performance for the organosilicon-modified acrylate emulsion being prepared are more
Good, when it, which is coated on, forms back coating on substrate, print quality is apparent, and printing noise is lower, and the service life is longer, more can
Meet the needs of transfer process.
In the preferred embodiment of the present invention, in the raw material of organosilicon-modified acrylate emulsion, including matter is pressed
The following raw material of amount number meter: 65-78 parts and 22-35 parts of organosilicon-modified acrylate activated monomer of acrylate monomer.
In present invention further optimization embodiment, in the raw material of organosilicon-modified acrylate emulsion, with third
The sum of olefin(e) acid ester monomer and organosilicon-modified acrylate activated monomer are 100 mass fraction meters, acrylate monomer 65-78
Mass parts, organosilicon-modified acrylate activated monomer are 22-35 mass parts.
By controlling the quality proportioning of acrylate monomer and organosilicon-modified acrylate activated monomer, to control the two
It polymerize the structure of obtained silicone modified polyacrylate and the quality accounting of organosilicon, so that is generated is organic
Acrylate emulsion modified with organosiloxane has good adhesion property, heat resistance and smooth performance, especially works as acrylate monomer
For 65-72 parts, organosilicon-modified acrylate activated monomer be 28-35 parts when, the organosilicon-modified acrylate that is prepared
The comprehensive performance of lotion is more preferably.
It is typical but non-limiting, in the raw material of organosilicon-modified acrylate emulsion, with acrylate monomer and organic
Fluorine-silicon modified acrylic ester activated monomer be 100 mass parts meters, for example 65,68,72,75 or 78 parts of the dosage of acrylate monomer,
For example 22,25,28,30,32 or 35 parts of the dosage of organosilicon-modified acrylate activated monomer.
In the preferred embodiment of the present invention, acrylate monomer includes methyl acrylate, methyl methacrylate
Ester, ethyl acrylate, 2- methyl methacrylate, ethyl 2-methacrylate, 2- butyl methacrylate and butyl acrylate
One or more of.
It is typical but non-limiting, acrylate monomer be methyl acrylate, methyl methacrylate, ethyl acrylate,
2- methyl methacrylate, ethyl 2-methacrylate, 2- butyl methacrylate or butyl acrylate, or above-mentioned
The mixture of two kinds of substances of anticipating such as the mixture of methyl acrylate and ethyl acrylate can also be above-mentioned any three kinds or three
Kind or more substance mixture, such as the mixture of methyl acrylate, ethyl acrylate and butyl acrylate.
In present invention further optimization embodiment, acrylate monomer includes methyl methacrylate and acrylic acid
Butyl ester.The T of methyl methacrylategIt is higher, it is used as hard monomer, and the T of butyl acrylategIt is lower, it is selected as hard monomer
The mixture of methyl methacrylate and butyl acrylate as acrylic monomers so that acrylic monomers with it is organic-silicon-modified
When polymerization reaction occurs for acrylate reactive monomer, the silicone modified polyacrylate soft and hard segments of generation are arranged alternately,
To be effectively improved its glass transition temperature and toughness, its glass transition temperature is set to be maintained at 55-65 DEG C, to keep good toughness.
In the preferred embodiment of the present invention, in acrylate monomer, methyl methacrylate and acrylic acid fourth
The mass ratio of ester is (60-70): (5-10), so that the soft and hard segments distribution of the silicone modified polyacrylate generated is suitable
Preferably, comprehensive performance is good, especially when the mass ratio of methyl methacrylate and butyl acrylate is (60-68): raw when (5-10)
At silicone modified polyacrylate hardness distribution more be suitable for, comprehensive performance is more preferably.
It is typical but non-limiting, the mass ratio of methyl methacrylate and butyl acrylate for example 60:5,65:5,70:
5,60:8,65:8,70:8,75:8,60:10,65:10 or 70:10.
In the preferred embodiment of the present invention, the raw material of organosilicon-modified acrylate emulsion further includes initiator
And/or solvent.In a preferred embodiment of the invention, the meaning of "and/or" is the raw material of organic-silicon-modified propionic ester lotion
It may include any one in initiator and solvent, can also simultaneously include initiator and solvent.
In the preferred embodiment of the present invention, single with acrylate monomer and organosilicon-modified acrylate activity
The sum of body is 100 mass parts meters, and the dosage of the initiator is 0.2-0.8 mass parts, by controlling the additional amount of initiator, with
The suitable silicone modified polyacrylate of molecular weight is prepared in the progress for controlling polymerization reaction.
It is typical but non-limiting, with the sum of acrylate monomer and organosilicon-modified acrylate activated monomer for 100
Mass parts meter, the dosage of initiator for example 0.2,0.3,0.4,0.5,0.6,0.7 or 0.8 mass parts.
In the preferred embodiment of the present invention, initiator is selected from azo-initiator, persulfuric acid salt initiator
At least one of with peroxide type initiators, preferably peroxide type initiators, more preferably dibenzoyl peroxide.
In a preferred embodiment of the invention, initiator can for azo-initiator, persulfuric acid salt initiator or
Any one in peroxide type initiators, or azo-initiator, persulfuric acid salt initiator and peroxide
The mixture or azo of any two kinds of mixture in class initiator, azo-initiator and persulfuric acid salt initiator cause
The mixture of agent and peroxide type initiators can also be azo-initiator, persulfuric acid salt initiator and peroxide
The mixture of three kinds of initiators of class initiator.
Azo-initiator includes but is not limited to azodiisobutyronitrile and azobisisoheptonitrile, and persulfate initiator includes
But be not limited to potassium peroxydisulfate and ammonium persulfate, peroxide type initiators include but is not limited to hydrogen peroxide, benzoyl peroxide,
Benzoyl peroxide and methyl ethyl ketone peroxide.
In present invention further optimization embodiment, when initiator be peroxide type initiators, especially cause
When agent is dibenzoyl peroxide, more to the efficiency of initiation of acrylate monomer and organosilicon-modified acrylate activated monomer
It is high.
In the preferred embodiment of the present invention, single with acrylate monomer and organosilicon-modified acrylate activity
The sum of body is 100g meter, and the dosage of the organic solvent is 100-150mL.
By controlling the dosage of organic solvent, so that acrylate monomer and organosilicon-modified acrylate activated monomer
Dissolve in organic solvent more completely so that the two mixes more uniform in organic solvent, drawing in favor of subsequent
Under the action of sending out agent, polymerization obtains the organic-silicon-modified propylene of structure, number-average molecular weight and organosilicon quality more than being more suitable for
Acid ester polymer.
In the preferred embodiment of the present invention, organic solvent include benzene kind solvent, alcohols solvent, ether solvent and
One or more of ketones solvent.As organic solvent can be benzene kind solvent, alcohols solvent, ether solvent and ketones solvent,
Or the mixed solution of above-mentioned any two classes solvent, it can also be molten for the mixing of above-mentioned any three classes or the above solvent of three classes
Liquid.
In the preferred embodiment of the present invention, organic solvent includes toluene, methanol, acetone, methyl acetate, methyl ether
It, can also if organic solvent can be toluene, methanol, acetone, methyl acetate, methyl ether or ether one or more of with ether
The mixed solution for thinking above-mentioned any two kinds of solvents, such as the mixed solution or toluene of toluene and methanol and the mixed solution of ketone,
It can also be the mixed solution of above-mentioned any three kinds or more solvent, such as the mixed solution of toluene, methanol and methyl ether.
In present invention further optimization embodiment, organic solvent is the mixed solution of toluene and methanol, so that
The solubility property of raw material in organic solvent more preferably, the more conducively progress of polymerization reaction.
In present invention further optimization embodiment, in organic solvent, the mass ratio of toluene and methanol is (70-
85): when (15-30), being more conducive to the dissolution of raw material and the progress of polymerization reaction.
It is typical but non-limiting, in organic solvent, the mass ratio of toluene and methanol for example 70:30,75:25,80:20 or
85:15。
The second aspect according to the present invention, the present invention provides the preparation sides of above-mentioned organosilicon-modified acrylate emulsion
Method includes the following steps: for acrylate monomer and organosilicon-modified acrylate activated monomer to be dissolved in solvent, then plus
Enter initiator, acrylate monomer and organosilicon-modified acrylate activated monomer occur polymerization reaction, obtain organic-silicon-modified
Acrylic acid ester emulsion.
Organosilicon-modified acrylate emulsion preparation process provided by the invention is simple, easy to operate, is easy to implement scale
Metaplasia produces, and reduces preparation cost.
In the preferred embodiment of the present invention, acrylate monomer and organically-modified acrylic acid oligomer are dissolved in
In solvent, it is heated to 30-35 DEG C, adds initiator, in favor of further increasing polymerization efficiency, shortens polymerization time.
It is typical but non-limiting, acrylate monomer and organically-modified acrylic acid oligomer are dissolved in solvent, added
Heat adds initiator to after 30,31,32,33,34 or 35 DEG C.
In present invention further optimization embodiment, initiator is divided into multiple addition, in favor of controlling polymerization reaction
It carries out, obtains the higher polymer of number-average molecular weight to further increase the adhesion property of lotion and number-average molecular weight is prepared
Higher polymer improves the comprehensive performance of lotion.
In the preferred embodiment of the present invention, initiator is divided into is added three times, and standby technique is more simple for the first time for system
Single, the number-average molecular weight for the polymer that polymerization reaction obtains is also easier to control.
When initiator, which is divided into, to be added three times, the additional amount of the first initiator is 1/2 or so of total amount, and second is total amount
1/3 or so, be for the third time 1/6 or so of total amount.
According to the third aspect of the present invention, the present invention provides a kind of thermal transfer back coating liquid, the thermal transfer back coating liquids
Mainly dilute to obtain by organosilicon-modified acrylate emulsion of the present invention.
Thermal transfer back coating liquid is obtained using organic solvent diluting organosilicon-modified acrylate emulsion provided by the invention, with
It is coated on substrate conducive to thermal transfer back coating liquid.
Thermal transfer back coating liquid is prepared by using organic silicon acrylic ester lotion provided by the invention, is coated on it
The adhesion property of the thermal transfer back coating and substrate that are formed on substrate is good, heat resistance and smooth functional, service life
It is long, low noise is printed, the needs of transfer process can be effectively met.
The type of the organic solvent includes one or more of toluene, methanol, acetone, methyl acetate, methyl ether and ether,
Same as above, details are not described herein.
In the preferred embodiment of the present invention, consolidating for organosilicon-modified acrylate emulsion provided by the invention contains
Amount is 40-60wt%, and the solid content of thermal transfer back coating liquid provided by the invention is 15-25wt%.
It is typical but non-limiting, the solid content of organosilicon-modified acrylate liquid is 40wt%, 45wt%, 50wt%,
55wt% or 60wt%, the solid content of thermal transfer back coating liquid for example 15wt%, 18wt%%, 20wt%, 22wt% or 25wt%.
The fourth object of the present invention is to provide a kind of heat transfer printing carbon tape back coating, and main heat heat provided by the present invention turns
Print back coating liquid is coated on substrate and obtains after drying.
In the preferred embodiment of the present invention, thermal transfer back coating liquid coating weight on base material is 0.05-
0.12g/m2。
It should be noted that the thermal transfer back coating liquid coating weight on base material refers to shape after the drying of thermal transfer back coating liquid
At back coating coating weight on base material.
Drying of the coating of back coating liquid to the height (thickness that back applies) of coating weight, the uniformity of coating and coating apparatus
Capability Requirement is very high.If the coating weight of back coating liquid is higher, the high temperature that print head moment generates when printing need to pass through basement membrane, back coating
(certain thickness), priming coat finally pass to ink layer, and the heat of process consumption is more, to cannot reach ink layer fusing institute
The temperature needed, the peeling effect of ink is poor, so that the print quality of printing is deteriorated.If the uniformity of back coating is bad,
The heat for finally passing to ink layer is uneven, will lead to printing and lacks side.If back coating liquid cannot be completely dried on base film, or
Person's drying is insufficient, and the adhesion property that will lead to back coating liquid and substrate is deteriorated, and asks so as to cause print head pollution, printing noise etc.
Topic.To sum up, the height of back coating liquid coating weight will affect the heat transfer property and then the trace quality for influencing printing that back applies.Therefore, originally
Application control back coating liquid coating weight on base material is 0.05-0.12g/m2, when coating weight is less than 0.05/m2When, carry on the back the heat-resisting of painting
Performance is poor, and carbon ribbon is to puncture；When coating weight is greater than 0.12g/m2When, bar code border easily lacks side, and printing effect is poor.Especially
When thermal transfer back coating liquid coating weight on base material is 0.05-0.1g/m2When, obtained heat transfer printing carbon tape back coating it is comprehensive
It can be more preferably.
It is typical but non-limiting, thermal transfer back coating liquid coating weight on base material be 0.05,0.06,0.08,0.1 or
0.12g/m2。
As shown in Figure 1, according to the fifth aspect of the present invention, the present invention provides a kind of carbon ribbon, carbon ribbon includes substrate 1,
The side of the substrate 1 is provided with heat transfer printing carbon tape back coating 2, and the other side of the substrate 1 is provided with priming coat 3 and ink layer
4, and the priming coat 3 is set between the substrate 1 and the ink layer 4, structural schematic diagram is as shown in Fig. 1.
Wherein, in heat transfer printing carbon tape back coating 2,000 represent organic chain, and ◇ ◇ ◇ represents organosilicon chain.
In the preferred embodiment of the present invention, substrate 1 is PET film.
According to the sixth aspect of the invention, the application the present invention provides above-mentioned carbon ribbon in thermal transfer field.
Technical solution provided by the invention is further described below with reference to embodiment and comparative example.
Embodiment 1
Present embodiments provide a kind of organosilicon-modified acrylate emulsion, raw material includes according to the mass fraction as follows
Raw material: 60 parts of acrylate monomer, 40 parts of organosilicon-modified acrylate activated monomer, dibenzoyl peroxide (BPO) 0.3
Part, wherein the molecular formula of organosilicon-modified acrylate is R1-Si(CH3)2-(O-Si(CH3)2)n-O-Si(CH3)2-OCO-C
(CH3)=CH2, number-average molecular weight 10000, R1For normal-butyl, R2For propyl, acrylate monomer is methyl methacrylate
With the mixture of butyl acrylate, and the mass ratio of the two be 65:8.
Embodiment 2
Present embodiments provide a kind of organosilicon-modified acrylate emulsion, raw material includes according to the mass fraction as follows
Raw material: 80 parts of acrylate monomer, 20 parts of organosilicon-modified acrylate activated monomer, 0.3 part of dibenzoyl peroxide, wherein
Organosilicon-modified acrylate and acrylate monomer are in the same manner as in Example 1, and details are not described herein.
Embodiment 3
Present embodiments provide a kind of organosilicon-modified acrylate emulsion, raw material includes according to the mass fraction as follows
Raw material: 78 parts of acrylate monomer, 22 parts of organosilicon-modified acrylate activated monomer, 0.3 part of dibenzoyl peroxide, wherein
Organosilicon-modified acrylate and acrylate monomer are in the same manner as in Example 1, and details are not described herein.
Embodiment 4
Present embodiments provide a kind of organosilicon-modified acrylate emulsion, raw material includes according to the mass fraction as follows
Raw material: 72 parts of acrylate monomer, 28 parts of organosilicon-modified acrylate activated monomer, 0.3 part of dibenzoyl peroxide, wherein
Organosilicon-modified acrylate and acrylate monomer are in the same manner as in Example 1, and details are not described herein.
Embodiment 5
Present embodiments provide a kind of organosilicon-modified acrylate emulsion, raw material includes according to the mass fraction as follows
Raw material: 65 parts of acrylate monomer, 35 parts of organosilicon-modified acrylate activated monomer, 0.3 part of dibenzoyl peroxide, wherein
Organosilicon-modified acrylate and acrylate monomer are in the same manner as in Example 1, and details are not described herein.
Embodiment 6
A kind of organosilicon-modified acrylate emulsion is present embodiments provided, the difference is that, is had with embodiment 5
The molecular weight of machine fluorine-silicon modified acrylic ester activated monomer is 5000, remaining raw material and quality proportioning are same as Example 5, herein
It repeats no more.
Embodiment 7
A kind of organosilicon-modified acrylate emulsion is present embodiments provided, the difference is that, is had with embodiment 5
The molecular weight of machine fluorine-silicon modified acrylic ester activated monomer is 20000, remaining raw material and quality proportioning are same as Example 5,
This is repeated no more.
Embodiment 8
Present embodiments provide a kind of organosilicon-modified acrylate emulsion, with embodiment 5 the difference is that, third
In olefin(e) acid ester monomer, the mass ratio of methyl methacrylate and butyl acrylate is 60:10, remaining raw material and quality proportioning with
Embodiment 5 is identical, and details are not described herein.
Embodiment 9
Present embodiments provide a kind of organosilicon-modified acrylate emulsion, with embodiment 5 the difference is that, third
In olefin(e) acid ester monomer, the mass ratio of methyl methacrylate and butyl acrylate is 75:5, remaining raw material and quality proportioning with
Embodiment 5 is identical, and details are not described herein.
Embodiment 10
Present embodiments provide a kind of organosilicon-modified acrylate emulsion, with embodiment 5 the difference is that, third
Olefin(e) acid ester monomer is methyl methacrylate, remaining raw material and quality proportioning are same as Example 5, and details are not described herein.
Embodiment 11
Present embodiments provide a kind of organosilicon-modified acrylate emulsion, with embodiment 5 the difference is that, third
Olefin(e) acid ester monomer is butyl acrylate, remaining raw material and quality proportioning are same as Example 5, and details are not described herein.
Embodiment 12
Present embodiments provide a kind of organosilicon-modified acrylate emulsion, with embodiment 5 the difference is that, mistake
The dosage for aoxidizing dibenzoyl is 0.8 part, remaining raw material and quality proportioning are same as Example 5, and details are not described herein.
Embodiment 13
Present embodiments provide a kind of organosilicon-modified acrylate emulsion, with embodiment 5 the difference is that, mistake
The dosage for aoxidizing dibenzoyl is 0.2 part, remaining raw material and quality proportioning are same as Example 5, and details are not described herein.
Embodiment 14
A kind of organosilicon-modified acrylate emulsion is present embodiments provided, the difference is that, is had with embodiment 5
In machine fluorine-silicon modified acrylic ester molecule formula,
R1-Si(CH3)2-(O-Si(CH3)2)n-O-Si(CH3)2-R2OCO-C(CH3)=CH2, R1And R2It is hydrogen.
Embodiment 15
A kind of organosilicon-modified acrylate emulsion is present embodiments provided, the difference is that, is had with embodiment 5
In machine fluorine-silicon modified acrylic ester molecule formula,
R1-Si(CH3)2-(O-Si(CH3)2)n-O-Si(CH3)2-R2OCO-C(CH3)=CH2, R1And R2It is methyl,
Remaining raw material and quality proportioning are same as Example 5, and details are not described herein.
Embodiment 16
A kind of organosilicon-modified acrylate emulsion is present embodiments provided, the difference is that, is had with embodiment 5
In machine fluorine-silicon modified acrylic ester molecule formula,
R1-Si(CH3)2-(O-Si(CH3)2)n-O-Si(CH3)2-OCO-C(CH3)=CH2, R1For methyl R2For ethyl,
Remaining raw material and quality proportioning are same as Example 5, and details are not described herein.
Embodiment 17
A kind of organosilicon-modified acrylate emulsion is present embodiments provided, the difference is that, is had with embodiment 5
In machine fluorine-silicon modified acrylic ester molecule formula,
R1-Si(CH3)2-(O-Si(CH3)2)n-O-Si(CH3)2-OCO-C(CH3)=CH2, R1For propyl R2For ethyl,
Remaining raw material and quality proportioning are same as Example 5, and details are not described herein.
Embodiment 18
A kind of organosilicon-modified acrylate emulsion is present embodiments provided, the difference is that, is had with embodiment 5
In machine fluorine-silicon modified acrylic ester molecule formula,
R1-Si(CH3)2-(O-Si(CH3)2)n-O-Si(CH3)2-OCO-C(CH3)=CH2, R1For isobutyl group R2For methyl,
Remaining raw material and quality proportioning are same as Example 5, and details are not described herein.
The dosage of dibenzoyl peroxide is 0.5 part, remaining raw material and quality proportioning are same as Example 5, herein not
It repeats again.
Embodiment 19
The preparation method of the organosilicon-modified acrylate emulsion of above-described embodiment 1-18 offer, packet are be provided
Include following steps:
70mL is added in the four-hole boiling flask that Teflon stir paddle, thermometer, constant pressure funnel, condenser pipe are housed
(mass fraction of toluene is 70%-85% to the mixed solution of toluene and 30mL methanol, the mass fraction of methanol is 15%-
30%) after, stirring 10min, methyl methacrylate and/or butyl acrylate and organosilicon-modified acrylate activity is added
Monomer, thermostat water bath heat and are stirred well to the temperature of reaction solution and rise to 30~35 DEG C (temperature of thermostat water bath is set
It is set to 80~90 DEG C), part initiator BPO is added, and (first time additional amount is the 1/2 of BPO total amount, a small amount of butanone dissolution, constant pressure
Dropping funel is added dropwise), when reaction temperature reaches reflux temperature (68~73 DEG C), starts timing, maintain the reflux for 5h.Then
Part BPO (second of additional amount is the 1/3 of BPO total amount) is added, continues to maintain the reflux for 3h.Surplus BPO is finally added again,
3h is maintained the reflux for, reaction terminates.It is cooled to room temperature to reaction temperature, obtains organosilicon-modified acrylate emulsion.
Embodiment 20
A kind of organosilicon-modified acrylate emulsion, raw material and quality proportioning are present embodiments provided with embodiment 5,
With embodiment 5 the difference is that, in organosilicon-modified acrylate emulsion preparation process, by BPO for the first time all
It is added.
Comparative example 1
This comparative example provides a kind of organosilicon-modified acrylate emulsion, with embodiment 5 the difference is that, it is former
In material, acrylate monomer is 50 mass parts, and organosilicon-modified acrylate activated monomer is 50 mass parts, and acrylate list
Body and organosilicon-modified acrylate activated monomer are identical as the raw material in embodiment 5, and details are not described herein.
Comparative example 2
This comparative example provides a kind of organosilicon-modified acrylate emulsion, with embodiment 5 the difference is that, it is former
In material, acrylate monomer is 90 mass parts, and organosilicon-modified acrylate activated monomer is 10 mass parts, and acrylate list
Body and organosilicon-modified acrylate activated monomer are identical as the raw material in embodiment 5, and details are not described herein.
Comparative example 3
This comparative example provides a kind of organosilicon-modified acrylate emulsion, with embodiment 5 the difference is that, it is former
In material, acrylate monomer is 72 mass parts, and organosilicon-modified acrylate activated monomer is 18 mass parts, and acrylate list
Body and organosilicon-modified acrylate activated monomer are identical as the raw material in embodiment 5, and details are not described herein.
Comparative example 4
This comparative example provides a kind of organosilicon-modified acrylate emulsion, with embodiment 5 the difference is that, it is former
In material, the number-average molecular weight of organosilicon-modified acrylate activated monomer is 2000, and acrylate monomer and organic-silicon-modified
Acrylate reactive monomer dosage is same as Example 5, and details are not described herein.
Comparative example 5
This comparative example provides a kind of organosilicon-modified acrylate emulsion, with embodiment 5 the difference is that, it is former
In material, the number-average molecular weight of organosilicon-modified acrylate activated monomer is 30000, and acrylate monomer and organic-silicon-modified
Acrylate reactive monomer dosage is same as Example 5, and details are not described herein.
Comparative example 6
This comparative example provides a kind of organosilicon-modified acrylate emulsion, with embodiment 5 the difference is that, it is former
In material, the dosage of BPO is 0.1 part.
Comparative example 7
This comparative example provides a kind of organosilicon-modified acrylate emulsion, with embodiment 5 the difference is that, it is former
In material, the dosage of BPO is 1 part.
The preparation method for the organosilicon-modified acrylate emulsion that above-mentioned comparative example 1-7 is provided is with embodiment 5, herein no longer
It repeats.
Embodiment 21-39
Embodiment 21-39 each provides a kind of thermal transfer back coating liquid, is mentioned respectively by embodiment 1-18 and embodiment 20
The organosilicon-modified acrylate emulsion of confession dilutes to obtain, and the thermal transfer that embodiment 21-39 is provided carries on the back the solid content for applying lotion
It is 20wt%, dilution is the mixed solution of butanone and toluene with solvent, and the mass ratio of the two is 1:1.
Comparative example 8-15
Comparative example 8-15 each provides a kind of thermal transfer back coating liquid, is changed respectively by the organosilicon that comparative example 1-7 is provided
Property acrylic acid ester emulsion dilute to obtain, and comparative example 1-7 provide thermal transfer back apply lotion solid content be 20wt%, dilution
It is the mixed solution of butanone and toluene with solvent, and the mass ratio of the two is 1:1.
Test example 1
Embodiment 1-18, embodiment 20 and comparative example the 1-7 organosilicon-modified acrylate emulsion provided are purified respectively
Afterwards, organosilicon-modified acrylate is obtained, embodiment 1-18, embodiment 20 and comparative example 1-7 is measured respectively using GPC and is prepared into
The number-average molecular weight of the organosilicon-modified acrylate arrived, the results are shown in Table 1.
Table 1
From table 1 it follows that organic-silicon-modified third in the organosilicon-modified acrylate emulsion that embodiment 1-18 is provided
The number-average molecular weight of olefin(e) acid ester is 3-15 ten thousand, is not only easy to carry out the coating of lotion, and is easy to improve and the bonding of substrate jail
Degree.
It is added in polymerization system three times in addition, can be seen that from the comparison of embodiment 5 and embodiment 20 when BPO is divided into, more
Be conducive to generate the high silicone modified polyacrylate of number-average molecular weight.
Test example 2
It is 2wt%'s that embodiment 21-39 and comparative example 8-17 the thermal transfer back coating liquid provided are diluted to solid content respectively
Then above-mentioned solution is respectively coated in the side of substrate 1-26 by solution, coating weight is 0.05-0.08g/m2, wherein substrate
The other side of 1-26 is successively coated with priming coat and ink layer, dry, obtains carbon ribbon 1-26.
Heat resistance, printing noise and the print head pollution condition of carbon ribbon 1-26 are tested respectively, and the results are shown in Table 1.
Table 2
Note: heat resistance shown in upper table refers to the highest energy level (i.e. breakdown energy level) that carbon ribbon can bear, " 4 " in 4/18
Indicate the print speed of printer, " 18 " indicate the printing energy level of printer, and 4/18 indicates that print speed is 4, when energy level is 18,
Carbon ribbon breakdown.Printing noise is continuously to print 10 decibel instruments on used medium to measure.Print head pollution is in common copperplate
20000 are continuously printed on paper, whether observation print head has pollution, this has directly reacted the smoothness and bonding of back coating liquid used
Performance.
Test example 3
It is 1wt%, 1.5wt%, 3.5wt% that the thermal transfer back that embodiment 25 provides, which is applied lotion to be diluted to solid content respectively,
With the dilution of 4wt%, it is respectively coated on the side of substrate 27-30, coating weight is as shown in table 3, and the other side of substrate 27-30 is equal
It is successively coated with priming coat and ink layer respectively, it is dry, obtain carbon ribbon 27-30.The heat resistance of carbon ribbon 27-30 is tested respectively, is beaten
Noise and print head pollution condition are printed, the results are shown in Table 3.
Table 3
From table 3 it is observed that it is 0.05-0.11g/m that thermal transfer back, which applies lotion film amount on base material,2When, carbon ribbon
Heat resistance it is more preferable, printing noise is lower, and thermal transfer back apply lotion and substrate adhesion property it is more preferable, smoothness is also more preferably.
Test example 4
The organosilicon-modified acrylate emulsion that embodiment 5 and embodiment 20 provide, which is each configured to solid content, is
It after the diluting emulsion of 2wt%, is respectively coated on the side of substrate 31-32, and coating weight is 0.05-0.08g/m2, substrate
The other side be successively coated with priming coat and ink layer respectively, it is dry, obtain carbon ribbon 31-32, test carbon ribbon 31-32's respectively
Crisp toughness, heat resistance, printing noise and print head pollution condition, the results are shown in Table 4.
Table 4
| Crisp toughness | Heat resistance | It prints noise (dB) | Print head pollution | |
| Carbon ribbon 31 (embodiment 5) | It is tougher | Preferably | 80 | Noresidue |
| Carbon ribbon 32 (embodiment 20) | It is more crisp | Preferably | 89 | White residual is more |
As can be seen from Table 4, the toughness and heat resistance of carbon ribbon 31 are superior to carbon ribbon 32, and printing noise is lower, printing
BPO is added several times, it is poly- that the higher organosilicon-modified acrylate of number-average molecular weight is prepared for head pollution noresidue, this explanation
Object is closed, so that the comprehensive performance that organosilicon-modified acrylate emulsion is coated on the carbon ribbon being prepared on substrate is more excellent
It is different, it more can satisfy the needs of transfer process.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of organosilicon-modified acrylate emulsion, which is characterized in that polymerize to obtain by the following raw material monomer, the original
Material list body includes:
(a) acrylate monomer of 60-80 mass parts；
(b) the organosilicon-modified acrylate activated monomer of 20-40 mass parts；The organosilicon-modified acrylate activated monomer
Molecular formula are as follows:
R1-Si(CH3)2-(O-Si(CH3)2)n-O-Si(CH3)2-R2OCO-C(CH3)=CH2；
The R1、R2It is each independently selected from the substituted or non-substituted alicyclic ring of hydrogen, halogen, hydroxyl, nitro, carbon atom number 3-20
Hydrocarbon, the substituted or non-substituted aliphatic hydrocarbon of carbon atom number 1-20, carbon atom number 2-20 substituted or non-substituted unsaturated fat
The substituted or non-substituted aromatic hydrocarbon of hydrocarbon or carbon atom number 6-20；
The number-average molecular weight of the organosilicon-modified acrylate activated monomer is 5000-20000.
2. organosilicon-modified acrylate emulsion according to claim 1, which is characterized in that the R1、R2Each independently
Selected from hydrogen, halogen, hydroxyl, nitro, the substituted or non-substituted alicyclic of carbon atom number 3-6, the substitution of carbon atom number 1-4 or non-
The substitution of the substituted or non-substituted unsaturated aliphatic hydrocarbon, carbon atom number 6-12 of substituted aliphatic hydrocarbon, carbon atom number 2-5 non-takes
The aromatic hydrocarbon in generation；
Preferably, the substituted or non-substituted alicyclic of the carbon atom number 3-6 is selected from cyclopropyl, cyclobutyl, cyclopenta, methyl
One of cyclopropyl, ethyl cyclopropyl, methyl-cyclobutyl, ethylcyclobutyl and methylcyclopentyl；
Preferably, the substituted or non-substituted aliphatic hydrocarbon of the carbon atom number 1-4 is selected from methyl, ethyl, propyl, normal-butyl and different
One of butyl；
Preferably, the substituted or non-substituted unsaturated aliphatic hydrocarbon of the carbon atom number 2-5 is selected from vinyl, acrylic, butylene
One of base, pentenyl, methylpropenyl and methyl butene base；
Preferably, the substituted or non-substituted aromatic hydrocarbon of the carbon atom number 6-12 is selected from phenyl, tolyl, benzyl, ethylbenzene
One of base, phenethyl, p-methylphenyl, aminomethyl phenyl, o-methyl-phenyl, 1,3,5- trimethylphenyl；
Preferably, the R1、R2It is each independently selected from one of hydrogen, methyl, ethyl, propyl, normal-butyl and isobutyl group；
Preferably, the acrylate monomer and organosilicon-modified acrylate activated monomer polymerize organic-silicon-modified third
The number-average molecular weight of olefin(e) acid ester is 30,000-15 ten thousand, preferably 40,000-12 ten thousand；
Preferably, the number-average molecular weight of the organosilicon-modified acrylate activated monomer is 8000-12000.
3. organosilicon-modified acrylate emulsion according to claim 1, which is characterized in that the starting monomer includes third
Olefin(e) acid ester monomer 65-78 mass parts and organosilicon-modified acrylate activated monomer 22-35 mass parts；
Preferably, the starting monomer includes that acrylate monomer 65-72 mass parts and the organosilicon-modified acrylate are living
Property monomer 28-35 mass parts；
Preferably, the sum of the acrylate monomer and the organosilicon-modified acrylate activated monomer are 100 mass parts.
4. organosilicon-modified acrylate emulsion according to claim 1-3, which is characterized in that the acrylic acid
Ester monomer includes methyl acrylate, methyl methacrylate, ethyl acrylate, 2- methyl methacrylate, 2- methacrylic acid
At least one of ethyl ester, 2- butyl methacrylate and butyl acrylate；
Preferably, the acrylate monomer includes methyl methacrylate and butyl acrylate；
Preferably, in the acrylate monomer, the mass ratio of methyl methacrylate and butyl acrylate is (60-70): (5-
10), preferably (60-68): (5-10).
5. organosilicon-modified acrylate emulsion according to claim 1-3, which is characterized in that the organosilicon
The raw material of modified acrylate emulsion further includes initiator and/or solvent；
Preferably, the dosage of the initiator is the sum of acrylate monomer and organosilicon-modified acrylate activated monomer
The 0.3wt% of the sum of 0.2-0.8wt%, preferably acrylate monomer and organosilicon-modified acrylate activated monomer；
Preferably, the initiator is in peroxide type initiators, persulfuric acid salt initiator and azo-initiator
At least one, preferably peroxide type initiators, more preferably dibenzoyl peroxide；
Preferably, the volume mass ratio of the sum of the organic solvent and described starting monomer is 100-150mL:100g；
Preferably, the solvent is organic solvent；
Preferably, the organic solvent is selected from least one of benzene kind solvent, alcohol solvent, ketone solvent and ether solvent；
Preferably, the organic solvent includes at least one of toluene, methanol, acetone, methyl acetate, methyl ether and ether；
Preferably, the organic solvent is the mixed solution of toluene and methanol；
It is further preferred that the mass ratio of the toluene and methanol is (70-85): (15-30) in organic solvent.
6. the preparation method of organosilicon-modified acrylate emulsion according to claim 1-5, which is characterized in that
Include the following steps:
Make acrylate monomer and organosilicon-modified acrylate activated monomer that polymerization reaction occur, obtains organic-silicon-modified propylene
Acid esters lotion；
Preferably, acrylate monomer and organosilicon-modified acrylate activated monomer are dissolved in solvent, are then added and draw
Agent is sent out, acrylate monomer and organosilicon-modified acrylate activated monomer occur polymerization reaction, obtain organic-silicon-modified propylene
Acid esters lotion；
Preferably, acrylate monomer and organosilicon-modified acrylate activated monomer are dissolved in solvent, are heated to 30-35
DEG C, add initiator；
Preferably, the initiator is divided into multiple addition.
7. a kind of thermal transfer back coating liquid, which is characterized in that the thermal transfer back coating liquid is mainly as described in claim any one of 1-5
Organosilicon-modified acrylate emulsion dilute to obtain；
Preferably, the solid content of the thermal transfer back coating liquid is 15-25wt%, preferably 20wt%.
8. a kind of heat transfer printing carbon tape back coating, which is characterized in that be mainly coated on by thermal transfer back coating liquid as claimed in claim 7
It is obtained after drying on substrate；
Preferably, the thermal transfer back coating liquid coating weight on base material is 0.05-0.12g/m2, preferably 0.05-0.1g/m2。
9. a kind of carbon ribbon, which is characterized in that including substrate, the side of the substrate is provided with thermal transfer according to any one of claims 8
Carbon ribbon back coating；
Preferably, the other side of the substrate is provided with priming coat and ink layer, and the priming coat be set to the substrate with
Between the ink layer.
10. carbon ribbon as claimed in claim 9 is in the application in thermal transfer field.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116554762A (en) * | 2023-06-07 | 2023-08-08 | 焦作卓立膜材料股份有限公司 | Photo-curing organic silicon back coating material and preparation method thereof, thermal transfer carbon ribbon back coating and preparation method thereof, and thermal transfer carbon ribbon |
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