CN114083917B - Heat transfer film and preparation method and application thereof - Google Patents

Heat transfer film and preparation method and application thereof Download PDF

Info

Publication number
CN114083917B
CN114083917B CN202111200609.XA CN202111200609A CN114083917B CN 114083917 B CN114083917 B CN 114083917B CN 202111200609 A CN202111200609 A CN 202111200609A CN 114083917 B CN114083917 B CN 114083917B
Authority
CN
China
Prior art keywords
parts
heat
transfer film
layer
thermal transfer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202111200609.XA
Other languages
Chinese (zh)
Other versions
CN114083917A (en
Inventor
谢璐
黄浩铭
林志伟
徐礼金
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN202111200609.XA priority Critical patent/CN114083917B/en
Publication of CN114083917A publication Critical patent/CN114083917A/en
Application granted granted Critical
Publication of CN114083917B publication Critical patent/CN114083917B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/025—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B25/042—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material of natural rubber or synthetic rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/10—Layered products comprising a layer of natural or synthetic rubber next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/14—Layered products comprising a layer of natural or synthetic rubber comprising synthetic rubber copolymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/02—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by a sequence of laminating steps, e.g. by adding new layers at consecutive laminating stations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0066—Use of inorganic compounding ingredients
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0066—Use of inorganic compounding ingredients
    • C08J9/0071—Nanosized fillers, i.e. having at least one dimension below 100 nanometers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/009—Use of pretreated compounding ingredients
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/32—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof from compositions containing microballoons, e.g. syntactic foams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0261—Polyamide fibres
    • B32B2262/0269—Aromatic polyamide fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/206—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/302—Conductive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2203/00—Foams characterized by the expanding agent
    • C08J2203/22—Expandable microspheres, e.g. Expancel®
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2333/00—Characterised by the use of homopolymers or 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 of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
    • C08J2333/04—Characterised by the use of homopolymers or 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 of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2477/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
    • C08J2477/10—Polyamides derived from aromatically bound amino and carboxyl groups of amino carboxylic acids or of polyamines and polycarboxylic acids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Polymers & Plastics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Nanotechnology (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention belongs to the technical field of thermal transfer printing, and discloses a thermal transfer printing film and a preparation method and application thereof. The heat transfer film comprises a framework layer, an air cushion layer, a bearing layer and a transfer release layer which are sequentially arranged; the framework layer is made of aramid fiber modified by heat-conducting filler; the air cushion layer is mainly prepared from the following components: acrylate rubber, heat conduction materials, conductive materials, reinforcing materials, foaming microspheres, coupling agents and vulcanizing agents; the bearing layer is mainly prepared from the following components: acrylate rubber, a heat conduction material, a conductive material, a reinforcing material, a coupling agent and a vulcanizing agent; the transfer release layer is a perfluoroethylene propylene copolymer. The transfer film has the characteristics of excellent heat resistance and oil resistance, low surface tension, insulation and heat conduction, and is very suitable for transfer printing of electronic ink.

Description

Heat transfer film and preparation method and application thereof
Technical Field
The invention belongs to the technical field of heat transfer printing, and particularly relates to a heat transfer printing film and a preparation method and application thereof.
Background
The traditional heat transfer film or heat transfer cloth is mostly made of silicon rubber materials, and the performance of the traditional heat transfer film or heat transfer cloth can meet the transfer printing requirement of the conventional ink. However, for the printing of electronic ink, because of its high requirements for insulation/conductivity, heat resistance, oil resistance and surface tension, the existing thermal transfer film still cannot meet the requirements well. For example, the electronic ink usually contains a certain amount of mineral oil, and the existing thermal transfer film has poor oil resistance, so that the thermal transfer film is easy to deform and has greatly reduced strength; meanwhile, the surface tension of the existing heat transfer film is high, and high-sharpness transfer printing cannot be realized; moreover, the existing thermal transfer film has insufficient insulating and heat-conducting properties, and cannot well meet the requirements of heat conduction/electrical insulation when the thermal transfer film is contacted with the metal roller.
Accordingly, it is desirable to provide a novel thermal transfer film that is heat and oil resistant, thermally conductive, and has low surface tension.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art described above. Therefore, the invention provides a heat transfer film, a preparation method and application thereof, and the heat transfer film has the characteristics of excellent heat resistance and oil resistance, low surface tension, insulation and heat conduction, and is very suitable for transfer printing of electronic ink.
The invention provides a heat transfer film, which comprises a framework layer, an air cushion layer, a bearing layer and a transfer release layer which are sequentially arranged;
the framework layer is made of heat-conducting filler modified aramid fiber; the air cushion layer is mainly prepared from the following components: acrylate rubber, a heat conduction material, a conductive material, a reinforcing material, foaming microspheres, a coupling agent and a vulcanizing agent; the bearing layer is mainly prepared from the following components: acrylate rubber, a heat conduction material, a conductive material, a reinforcing material, a coupling agent and a vulcanizing agent; the transfer release layer is a perfluoroethylene propylene copolymer.
The invention selects the aramid fiber as the basis of the framework layer, has the characteristics of high strength, high temperature resistance and good insulativity, but because the aramid fiber has poor heat conductivity, the invention carries out modification treatment on the aramid fiber and improves the heat-conducting property of the aramid fiber. Meanwhile, the bearing layer adopted by the invention has good heat conduction performance and oil-resistant and temperature-resistant performance, can effectively bear the transfer printing pressure and is conducted to the air cushion layer; the air cushion layer also has good heat conduction, oil resistance and temperature resistance, and the contained foaming microspheres enable the air cushion layer to generate directional deformation (mainly thickness deformation) under high pressure, and the air cushion layer can be quickly restored to the original shape after the pressure is released. The invention adopts the perfluoroethylene propylene copolymer as the composition of the transfer printing release layer, can effectively reduce the surface tension of the heat transfer printing film and has the characteristic of long service life. When the thermal transfer film is used, the thermal transfer film is used as a capacitor element and can provide voltage for transferring electronic ink, wherein the air cushion layer and the bearing layer can be charged, and the framework layer plays an insulating role.
Preferably, the preparation method of the heat-conducting modified aramid fiber comprises the following steps: mixing and grinding a binder, a dispersant and a heat-conducting filler to obtain a coating; and coating aramid fibers with the coating, and heating and curing to obtain the aramid fibers modified by the heat-conducting filler.
More preferably, the average particle size of the coating is 500nm or less.
More preferably, the heating curing method comprises the following steps: putting the coated aramid fiber into an oven, heating to 90-100 ℃, and keeping the temperature for 25-35min; continuously heating to 145-160 ℃, and keeping the temperature for 25-35min; then the temperature is raised to 255-265 ℃, and the temperature is kept for 55-70min.
More preferably, the coating comprises the following components in parts by weight: 90-110 parts of binder, 2-4 parts of dispersant and 5-10 parts of heat-conducting filler. The heat conducting filler can be selected from aluminum nitride.
Preferably, the heat conducting material is aluminum nitride.
Preferably, the conductive material is carbon nanotubes.
Preferably, the reinforcing material is carbon black and/or silica.
Preferably, the air cushion layer is prepared from the following components in parts by weight: 90-110 parts of acrylate rubber, 25-35 parts of heat conducting material, 8-12 parts of conducting material, 7-15 parts of reinforcing material, 8-12 parts of foaming microspheres, 3-5 parts of coupling agent and 2-4 parts of vulcanizing agent.
Preferably, the bearing layer is prepared from the following components in parts by weight: 90-110 parts of acrylate rubber, 25-35 parts of heat conducting material, 8-12 parts of conducting material, 7-15 parts of reinforcing material, 3-5 parts of coupling agent and 2-4 parts of vulcanizing agent.
The invention also provides a preparation method of the heat transfer film, which comprises the following steps:
sequentially putting the heat-conducting filler modified aramid fiber and the air cushion layer material into a mold, and carrying out compression molding; continuing to put the materials of the bearing layer, and carrying out compression molding; after vulcanization, coating a perfluoroethylene propylene copolymer, and heating and baking to obtain the heat transfer film;
the preparation method of the air cushion layer material comprises the following steps: mixing acrylate rubber, a heat conduction material, a conductive material, a reinforcing material, foaming microspheres and a coupling agent for banburying, and then adding a vulcanizing agent for open milling;
the preparation method of the bearing layer material comprises the following steps: mixing the acrylate rubber, the heat conducting material, the reinforcing material and the coupling agent for banburying, and then adding the vulcanizing agent for open mixing.
Preferably, the vulcanization treatment method comprises the following steps: vulcanizing at 115-125 deg.C for 110-130min, and vulcanizing at 165-175 deg.C for 110-130min.
Preferably, the heating and baking method comprises the following steps: baking at 150-170 deg.C for 20-35min.
The invention also provides application of the heat transfer film in electronic ink printing.
Compared with the prior art, the invention has the following beneficial effects:
aiming at the defect that the existing heat transfer film is difficult to meet the requirements of electronic ink transfer printing in the aspects of insulating heat-conducting property, heat resistance, oil resistance and surface tension, the heat transfer film has the characteristics of excellent heat resistance and oil resistance, low surface tension, insulation and heat conduction by adopting the framework layer, the air cushion layer, the bearing layer and the transfer printing release layer with more excellent performances, and is very suitable for the transfer printing of electronic ink.
Detailed Description
In order to make the technical solutions of the present invention more apparent to those skilled in the art, the following examples are given for illustration. It should be noted that the following examples are only preferred embodiments of the present invention, and the claimed protection scope is not limited thereto, and any modification, substitution, combination made without departing from the spirit and principle of the present invention are included in the protection scope of the present invention.
The starting materials, reagents or apparatuses used in the following examples are, unless otherwise specified, either commercially available from conventional sources or can be obtained by known methods.
Example 1
The embodiment provides a thermal transfer film, which comprises a framework layer, an air cushion layer, a bearing layer and a transfer release layer, wherein the framework layer, the air cushion layer, the bearing layer and the transfer release layer are sequentially arranged;
the preparation method of the heat transfer film in this embodiment includes the following steps:
(1) Selecting basf Matrimid 5218 and adopting NMP (N-methyl pyrrolidone) as a solvent to prepare a binder with the solid content of 20%; selecting Lumbo Solsperse 20000 as a dispersant, and selecting nano aluminum nitride as a heat-conducting filler;
adding 100 parts by weight of binder, 3 parts by weight of dispersant and 6 parts by weight of heat conducting filler into a sand mill with stirring, under the protection of circulating cooling of cold water (below 10 ℃), ensuring the temperature of the material to be less than or equal to 50 ℃, grinding for at least 8 hours, detecting by using a laser particle size detector, and finishing the preparation of the coating when the maximum particle size of particles in the material is less than or equal to 500 nm;
soaking the aramid fiber fabric into the prepared coating to ensure that the aramid fiber fabric is completely coated, putting the completely coated aramid fiber fabric into a vacuum oven, gradually heating to 90 ℃, and keeping the temperature for 30min; then heating to 150 ℃, and preserving the heat for 30min; continuing to heat to 260 ℃, preserving heat for 60min, and then cooling to room temperature to obtain the heat-conducting filler modified aramid fiber;
(2) Preparing an air cushion layer material: the following components in parts by weight are put into an internal mixer for internal mixing: 100 parts of acrylate rubber (Japanese Ruizhong H570 high-performance ACM), 30 parts of heat conducting material (nano aluminum nitride), 10 parts of conducting material (nano carbon tube), 10 parts of reinforcing material (carbon black N550 parts, fumed silica 2 parts), 10 parts of expanded foaming microspheres (Ackso 031DU 40) and 4 parts of coupling agent (Michigan A-1100); the heating temperature for banburying is 60 ℃, and the banburying time is 60min; discharging; adding the internally mixed material into an open mill, adding 2 parts by weight of a vulcanizing agent (triallyl isocyanurate), and open milling for 3 times to obtain an air cushion layer material;
preparing a material of a bearing layer: the following components in parts by weight are put into an internal mixer for internal mixing: 100 parts of acrylate rubber (Japanese Rueisen H570 high-performance ACM), 30 parts of heat conducting material (nano aluminum nitride), 10 parts of conducting material (carbon nano tube), 4 parts of reinforcing material (carbon black N550, 2 parts of fumed silica) and coupling agent (Ma picture A-1100); the heating temperature for banburying is 60 ℃, and the banburying time is 60min; discharging; adding the internally mixed material into an open mill, adding 2 parts by weight of a vulcanizing agent (triallyl isocyanurate), and open milling for 3 times to obtain a bearing layer material;
(3) Sequentially putting the heat-conducting filler modified aramid fiber and the air cushion layer material into a die, and performing compression molding by using a molding press with the weight of more than 10 tons; then, continuously adding materials of the bearing layer, and using a molding press with more than 10 tons to mold and form; the ratio of the materials of the air cushion layer to the materials of the bearing layer is 5;
vulcanizing at 120 deg.C for 120min, and vulcanizing at 170 deg.C for 120min; and coating a perfluoroethylene propylene copolymer (Dajin GLS-213 DRA), and baking at 160 ℃ for 30min to form a transfer release layer with the thickness of about 20 mu m, thereby finally preparing the heat transfer film.
Example 2
The embodiment provides a thermal transfer film, which comprises a skeleton layer, an air cushion layer, a bearing layer and a transfer release layer, wherein the skeleton layer, the air cushion layer, the bearing layer and the transfer release layer are sequentially arranged;
the preparation method of the heat transfer film in this embodiment includes the following steps:
(1) Selecting basf Matrimid 5218 and adopting NMP (N-methyl pyrrolidone) as a solvent to prepare a bonding agent with the solid content of 20 percent; selecting Lumbo Solsperse 20000 as a dispersant, and selecting nano aluminum nitride as a heat-conducting filler;
adding 95 parts by weight of binder, 4 parts by weight of dispersant and 7 parts by weight of heat conducting filler into a sand mill with stirring, under the protection of circulating cooling of cold water (below 10 ℃), ensuring the temperature of the material to be less than or equal to 50 ℃, grinding for at least 8 hours, detecting by using a laser particle size detector, and finishing the preparation of the coating when the maximum particle size of particles in the material is less than or equal to 500 nm;
soaking the aramid fiber fabric into the prepared coating to ensure that the aramid fiber fabric is completely coated, putting the completely coated aramid fiber fabric into a vacuum oven, gradually heating to 90 ℃, and keeping the temperature for 35min; then heating to 150 ℃, and preserving the heat for 30min; continuing to heat to 260 ℃, preserving the heat for 60min, and then cooling to room temperature to obtain the heat-conducting filler modified aramid fiber;
(2) Preparing an air cushion layer material: the following components in parts by weight are put into an internal mixer for internal mixing: 105 parts of acrylate rubber (Japanese Rueisen H570 high-performance ACM), 32 parts of heat conducting material (nano aluminum nitride), 10 parts of conducting material (carbon nano tube), 10 parts of reinforcing material (carbon black N550, 3 parts of fumed silica), 10 parts of expanded foamed microspheres (Acksu 031DU 40) and 4 parts of coupling agent (Magi graph A-1100); the heating temperature for banburying is 60 ℃, and the banburying time is 60min; discharging; adding the internally mixed material into an open mill, adding 2 parts by weight of a vulcanizing agent (triallyl isocyanurate), and open milling for 3 times to obtain an air cushion layer material;
preparing a material of a bearing layer: the following components in parts by weight are put into an internal mixer for internal mixing: 105 parts of acrylate rubber (Japanese Ruizhong H570 high-performance ACM), 32 parts of heat conducting material (nano aluminum nitride), 10 parts of conducting material (nano carbon tube), 7 parts of reinforcing material (carbon black N550, 3 parts of fumed silica) and 4 parts of coupling agent (Mitigo A-1100); discharging; adding the internally mixed material into an open mill, adding 2 parts by weight of a vulcanizing agent (triallyl isocyanurate), and open milling for 3 times to obtain a bearing layer material;
(3) Sequentially putting the heat-conducting filler modified aramid fiber and the air cushion layer material into a die, and performing compression molding by using a molding press with the weight of more than 10 tons; then continuously adding materials of the bearing layer, and using a mould pressing machine with more than 10 tons for mould pressing and molding; the ratio of the materials of the air cushion layer to the materials of the bearing layer is 5;
vulcanizing at 125 deg.C for 130min, and vulcanizing at 170 deg.C for 120min; and coating a perfluoroethylene propylene copolymer (Dajin GLS-213 DRA), and baking at 170 ℃ for 35min to form a transfer release layer with the thickness of about 20 mu m, thereby finally preparing the heat transfer film.
Product effectiveness testing
The heat transfer films obtained in examples 1 to 2 were subjected to the performance tests shown below, and the test results are shown in table 1.
The heat conduction test method comprises the following steps: a probe method;
the surface conductivity test method comprises the following steps: a probe method;
surface tension test method: schumann pilar dyne pen;
the heat-resistant oil-resistant load permanent compression set testing method comprises the following steps: the thickness of the thermal transfer film was measured with a micrometer and designated as H1. The pressure of 2 kg/square centimeter of the heat transfer film is given by an AIDebauer HPA manual pressure test machine, and the test machine is placed in a constant temperature oil pan filled with mineral oil with the boiling point of more than 200 ℃ to ensure that the mineral oil does not heat the heat transfer film. And heating the constant-temperature oil pan to 150 ℃ and keeping the temperature constant. And after 500 hours, taking out the testing machine, taking down the heat transfer film, standing at normal temperature for 24 hours, and testing the thickness of the heat transfer film by using a micrometer, wherein the mark is H2. The permanent compression set was calculated by the following formula.
Deformation (percent) = (H1-H2)/H1 × 100%
Table 1 heat transfer film performance test results
Figure BDA0003302964910000061
As shown in table 1, the thermal transfer film obtained in examples 1-2 of the present invention has excellent thermal conductivity, insulation property, low surface tension, heat resistance, oil resistance and low deformation (less than 5%), and is very suitable for use as a transfer medium of electronic ink.
The present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. Furthermore, the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

Claims (10)

1. The heat transfer film is characterized by comprising a framework layer, an air cushion layer, a bearing layer and a transfer release layer which are sequentially arranged;
the framework layer is made of aramid fiber modified by heat-conducting filler; the air cushion layer is mainly prepared from the following components: acrylate rubber, heat conduction materials, conductive materials, reinforcing materials, foaming microspheres, coupling agents and vulcanizing agents; the bearing layer is mainly prepared from the following components: acrylate rubber, a heat conduction material, a conductive material, a reinforcing material, a coupling agent and a vulcanizing agent; the transfer release layer is a perfluoroethylene propylene copolymer.
2. The thermal transfer film according to claim 1, wherein the preparation method of the thermal conductive filler-modified aramid fiber is as follows: mixing and grinding a binder, a dispersant and a heat-conducting filler to obtain a coating; and coating aramid fibers with the coating, and heating and curing to obtain the aramid fibers modified by the heat-conducting filler.
3. The thermal transfer film according to claim 2, wherein the heat curing method is: putting the coated aramid fiber into an oven, heating to 90-100 ℃, and keeping the temperature for 25-35min; continuously heating to 145-160 ℃, and keeping the temperature for 25-35min; then the temperature is raised to 255-265 ℃, and the temperature is kept for 55-70min.
4. The thermal transfer film of claim 2, wherein the coating comprises the following components in parts by weight: 90-110 parts of binder, 2-4 parts of dispersant and 5-10 parts of heat-conducting filler.
5. The thermal transfer film according to claim 1, wherein the air cushion layer is made from the following components in parts by weight: 90-110 parts of acrylate rubber, 25-35 parts of heat conduction material, 8-12 parts of conductive material, 7-15 parts of reinforcing material, 8-12 parts of foaming microsphere, 3-5 parts of coupling agent and 2-4 parts of vulcanizing agent.
6. The thermal transfer film according to claim 1, wherein the carrier layer is made from the following components in parts by weight: 90-110 parts of acrylate rubber, 25-35 parts of heat conducting material, 8-12 parts of conducting material, 7-15 parts of reinforcing material, 3-5 parts of coupling agent and 2-4 parts of vulcanizing agent.
7. The method for manufacturing a thermal transfer film according to any one of claims 1 to 6, characterized by comprising the steps of:
sequentially putting the heat-conducting filler modified aramid fiber and the air cushion layer material into a mold, and carrying out compression molding; continuing to put the materials of the bearing layer, and carrying out compression molding; after vulcanization, coating a perfluoroethylene propylene copolymer, and heating and baking to obtain the heat transfer film;
the preparation method of the air cushion layer material comprises the following steps: mixing acrylate rubber, a heat conduction material, a conductive material, a reinforcing material, foaming microspheres and a coupling agent for banburying, and then adding a vulcanizing agent for open milling;
the preparation method of the bearing layer material comprises the following steps: mixing the acrylate rubber, the heat conducting material, the reinforcing material and the coupling agent for banburying, and then adding the vulcanizing agent for open mixing.
8. The production method according to claim 7, wherein in the production method of the thermal transfer film, the vulcanization treatment is performed by: vulcanizing at 115-125 deg.C for 110-130min, and vulcanizing at 165-175 deg.C for 110-130min.
9. The manufacturing method according to claim 7, wherein in the manufacturing method of the thermal transfer film, the heating and baking method is: baking at 150-170 deg.C for 20-35min.
10. Use of the thermal transfer film of any of claims 1-6 in electronic ink printing.
CN202111200609.XA 2021-10-14 2021-10-14 Heat transfer film and preparation method and application thereof Active CN114083917B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111200609.XA CN114083917B (en) 2021-10-14 2021-10-14 Heat transfer film and preparation method and application thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111200609.XA CN114083917B (en) 2021-10-14 2021-10-14 Heat transfer film and preparation method and application thereof

Publications (2)

Publication Number Publication Date
CN114083917A CN114083917A (en) 2022-02-25
CN114083917B true CN114083917B (en) 2023-02-17

Family

ID=80296959

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111200609.XA Active CN114083917B (en) 2021-10-14 2021-10-14 Heat transfer film and preparation method and application thereof

Country Status (1)

Country Link
CN (1) CN114083917B (en)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0988992A1 (en) * 1998-09-25 2000-03-29 Nitto Denko Corporation Printing sheet for forming high temperature resistant labels
JP2000141994A (en) * 1998-11-13 2000-05-23 Ricoh Co Ltd Transfer sheet, image forming transfer sheet using the same and transfer image-forming method using the sheet
JP2002356635A (en) * 2001-05-30 2002-12-13 Ricoh Co Ltd Recording material, liquid developer, and image formation method using the same
CN101542039A (en) * 2006-11-14 2009-09-23 可隆科技特有限公司 Flexible printed conductive fabric and method for fabricating the same
WO2015069255A1 (en) * 2013-11-07 2015-05-14 Hewlett-Packard Development Company, L.P. Printable recording media
CN105636784A (en) * 2013-10-11 2016-06-01 日东电工株式会社 Sheet for transferring thin layer, thin-layer-transferring sheet with electrode catalyst layer, process for producing sheet for transferring thin layer, and process for producing membrane electrode assembly
CN108690515A (en) * 2018-04-13 2018-10-23 卢汉军 A kind of high elasticity silica rubber is carved characters film and preparation method thereof
CN109562632A (en) * 2016-05-30 2019-04-02 兰达公司 Intermediate transfer member
WO2020005264A1 (en) * 2018-06-29 2020-01-02 Hewlett-Packard Development Company, L.P. Printable fabrics
CN112659695A (en) * 2020-12-21 2021-04-16 四川东材科技集团股份有限公司 High-thermal-conductivity polyaramide fiber paper polyimide film soft composite material and preparation method and application thereof
CN112757801A (en) * 2020-12-19 2021-05-07 马鞍山悠思电子科技有限公司 Digital printing water transfer printing film and preparation method thereof

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0988992A1 (en) * 1998-09-25 2000-03-29 Nitto Denko Corporation Printing sheet for forming high temperature resistant labels
JP2000141994A (en) * 1998-11-13 2000-05-23 Ricoh Co Ltd Transfer sheet, image forming transfer sheet using the same and transfer image-forming method using the sheet
JP2002356635A (en) * 2001-05-30 2002-12-13 Ricoh Co Ltd Recording material, liquid developer, and image formation method using the same
CN101542039A (en) * 2006-11-14 2009-09-23 可隆科技特有限公司 Flexible printed conductive fabric and method for fabricating the same
CN105636784A (en) * 2013-10-11 2016-06-01 日东电工株式会社 Sheet for transferring thin layer, thin-layer-transferring sheet with electrode catalyst layer, process for producing sheet for transferring thin layer, and process for producing membrane electrode assembly
WO2015069255A1 (en) * 2013-11-07 2015-05-14 Hewlett-Packard Development Company, L.P. Printable recording media
CN109562632A (en) * 2016-05-30 2019-04-02 兰达公司 Intermediate transfer member
CN108690515A (en) * 2018-04-13 2018-10-23 卢汉军 A kind of high elasticity silica rubber is carved characters film and preparation method thereof
WO2020005264A1 (en) * 2018-06-29 2020-01-02 Hewlett-Packard Development Company, L.P. Printable fabrics
CN112757801A (en) * 2020-12-19 2021-05-07 马鞍山悠思电子科技有限公司 Digital printing water transfer printing film and preparation method thereof
CN112659695A (en) * 2020-12-21 2021-04-16 四川东材科技集团股份有限公司 High-thermal-conductivity polyaramide fiber paper polyimide film soft composite material and preparation method and application thereof

Also Published As

Publication number Publication date
CN114083917A (en) 2022-02-25

Similar Documents

Publication Publication Date Title
CN112961460B (en) Organic resin composite material with 3D polyimide as heat conducting framework and preparation method thereof
CN112778766B (en) High-reliability high-heat-conductivity silica gel composition and preparation method and application thereof
CN110669316B (en) Insulating material for bus duct
CN110776745A (en) Preparation method of thermal interface material
CN114083917B (en) Heat transfer film and preparation method and application thereof
CN114015110B (en) Low-shrinkage phenolic aerogel and preparation method thereof
CN113072734B (en) Thermotropic liquid crystal polymer microporous foam material and preparation method thereof
CN105647112A (en) Thermally conductive and insulating composite plastic material and preparation method thereof
CN108864869B (en) Interior wall coating with temperature-adjusting and energy-storing functions and preparation method thereof
CN114350156A (en) High-temperature-resistant heat-conducting wave-absorbing composite material and preparation method thereof
CN114250062A (en) Aluminum powder intercalation expanded graphite composite shape-stabilized phase change material and preparation method thereof
CN115073921B (en) Ceramic flame-retardant coating coated silicone rubber foam and preparation process thereof
CN115368822A (en) Ceramizable high-temperature-resistant dimensional silicone rubber protective material and preparation method thereof
CN111807808B (en) Preparation method of high-temperature-resistant heat-insulation composite material
CN111533953A (en) Preparation method of high-thermal-conductivity powder for heat-conducting rubber
Li et al. Incorporating paraffin@ SiO 2 nanocapsules with abundant surface hydroxyl groups into polydimethylsiloxane to develop composites with enhanced interfacial heat conductance for chip heat dissipation
CN112358300A (en) Method for preparing h-BN-based ceramic material with high directional heat conduction based on 3D printing technology
US20230193023A1 (en) Phthalonitrile-based composite material, preparation method therefor and use thereof
CN113248244B (en) Low-temperature ceramic insulating material suitable for complex insulating structure and preparation method thereof
CN115557729B (en) Light heat-insulating material for building and preparation process thereof
CN113248919B (en) High-temperature-resistant metal polyimide composite material and preparation method thereof
WO2019095262A1 (en) Polyimide/carbon nanotube composite film and preparation method therefor
TWI785803B (en) Isotropic graphite material composition and method of producing isotropic graphite material
CN113637227B (en) Phthalonitrile-based composite material and preparation method and application thereof
CN115260686B (en) High-performance friction material for forklift and preparation method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant