CN110600197A - Preparation method of TPU conductive film - Google Patents
Preparation method of TPU conductive film Download PDFInfo
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- CN110600197A CN110600197A CN201910887025.0A CN201910887025A CN110600197A CN 110600197 A CN110600197 A CN 110600197A CN 201910887025 A CN201910887025 A CN 201910887025A CN 110600197 A CN110600197 A CN 110600197A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/0016—Apparatus or processes specially adapted for manufacturing conductors or cables for heat treatment
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/0026—Apparatus for manufacturing conducting or semi-conducting layers, e.g. deposition of metal
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/30—Drying; Impregnating
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
- H01B5/14—Non-insulated conductors or conductive bodies characterised by their form comprising conductive layers or films on insulating-supports
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Abstract
The invention discloses a preparation method of a TPU conductive film, which comprises the following steps: p1, preparing a film; p2, preparing a conductive agent; p3, preparing a conductive liquid; p4, ultrasonic dispersion: carrying out ultrasonic dispersion treatment on the conductive liquid by using an ultrasonic dispersion instrument to obtain treated conductive liquid; p5, coating; p6, thermal curing; p7, post-treatment, the preparation method of the TPU conductive film provided by the invention is characterized in that the modes of preparing the base film and the film are combined, the prepared conductive liquid is coated, and then the film is rolled and compounded on the surface, so that the integral adhesion stability can be ensured, the peeling is avoided, the integral structural strength is improved, the film is made of materials with reasonable proportion, the process is simplified, the control flow is facilitated, the convenience of production and processing and the use stability are greatly improved, and the popularization and the use are facilitated.
Description
Technical Field
The invention relates to the technical field of conductive films, in particular to a preparation method of a TPU conductive film.
Background
The conductive polymer materials have been developed rapidly in the past decades and are widely used in the industries of automobiles, printing, electrical appliances and the like, and the conductive polymer materials are mainly divided into composite conductive polymer materials and structural conductive polymer materials, so that the conductive polymer materials have the advantages of easiness in molding, low cost and the like, and among them, TPU material films are most widely used.
However, the existing TPU conductive film has the disadvantages of single film material, poor structural performance of the film, weak bearing capacity, and difficult stable use, and when the conductive material is compounded, the process flow is complex and difficult to control, and the compounding force of the conductive material is weak, so that the conductive material is easy to peel off and separate, the stability of the whole structure is influenced, the product quality is reduced, and the improvement is needed.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a preparation method of a TPU conductive film.
In order to achieve the purpose, the invention adopts the following technical scheme:
a preparation method of a TPU conductive film comprises the following steps:
p1, preparation of film: producing a TPU base film and a TPU film by adopting a TPU raw material through a vacuum hot-press molding technology for later use;
p2, preparation of conductive agent: adding nano silver nitrate into the thermosetting adhesive, and uniformly stirring for 20 to 30 minutes to obtain a conductive agent;
p3, preparing a conductive liquid: placing a conductive agent in a propanol solution, and diluting according to the proportion of 1:5-8 to obtain a conductive solution;
p4, ultrasonic dispersion: carrying out ultrasonic dispersion treatment on the conductive liquid by using an ultrasonic dispersion instrument to obtain treated conductive liquid;
p5, coating: spraying the treated conductive liquid on two surfaces of the PTU base film, and carrying out calendering and shaping treatment through a calender to obtain a calendered film:
p6, thermal curing: attaching the TPU coated film to the surface of the rolled film, and performing thermosetting treatment to obtain a cured film;
p7, post-treatment: and cleaning the cured film by using absolute ethyl alcohol, and drying to obtain the conductive film.
Preferably, the TPU-based film and the TPU-coated film in the step P1 include 50% -70% of TPU particles, 10% -15% of nano silica master batch, 5% -10% of antioxidant, 5% -10% of foaming agent and 3% -6% of calcium carbonate filler, and the preparation method includes the following steps:
s1, weighing the raw materials according to the mass percentage for later use;
s2, adding the raw materials into a mixer, and uniformly stirring for 15 to 20 minutes at the speed of 30 to 45 revolutions per minute to obtain a mixed raw material;
s3, placing the mixed raw materials into a dryer, heating the mixed raw materials at 80-90 ℃, and drying the mixed raw materials for 1-2 hours to obtain dried raw materials;
s4, feeding the dry raw materials into a casting machine, and extruding to form a film blank;
and S5, feeding the film blank into a calender for calendering to obtain a TPU base film with the thickness of 0.3 mm to 0.5 mm and a TPU coated film with the thickness of 0.1 mm to 0.2 mm.
Preferably, the antioxidant is a hindered phenolic antioxidant.
Preferably, the foaming agent is one or a mixture of more of azodicarbonamide, methylsulfonyl urea, sodium bicarbonate and sodium citrate.
Preferably, the thermosetting adhesive in the step P2 is one of epoxy resin, phenolic resin or polyurethane.
Preferably, the ultrasonic dispersion treatment in the step P4 is carried out under the conditions of ultrasonic frequency of 25KHz-30KHz, power of 800w-1000w and time of 15 minutes-30 minutes.
Preferably, the coating thickness of the P5 step is 20 to 30 microns.
Preferably, the heat curing temperature of the P6 step is 50 to 55 degrees celsius, and the time is 20 to 25 minutes.
Preferably, the drying in the step P7 is natural airing at room temperature.
Preferably, the mass percentage of the nano silver nitrate and the thermosetting adhesive in the P2 step is 1: 5-8.
According to the preparation method of the TPU conductive film, the base film and the film are prepared, the conductive liquid is prepared in a combined manner for coating treatment, and then the film is rolled and compounded on the surface, so that the overall adhesion stability can be ensured, peeling is avoided, the overall structural strength is improved, the film is made of materials in reasonable proportion, the process is simplified, the control flow is facilitated, the convenience in production and processing and the use stability can be greatly improved, and the popularization and the use are facilitated.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
A preparation method of a TPU conductive film comprises the following steps:
p1, preparation of film: producing a TPU base film and a TPU film by adopting a TPU raw material through a vacuum hot-press molding technology for later use;
p2, preparation of conductive agent: adding nano silver nitrate into the thermosetting adhesive, and uniformly stirring for 20 to 30 minutes to obtain a conductive agent;
p3, preparing a conductive liquid: placing a conductive agent in a propanol solution, and diluting according to the proportion of 1:5-8 to obtain a conductive solution;
p4, ultrasonic dispersion: carrying out ultrasonic dispersion treatment on the conductive liquid by using an ultrasonic dispersion instrument to obtain treated conductive liquid;
p5, coating: spraying the treated conductive liquid on two surfaces of the PTU base film, and carrying out calendering and shaping treatment through a calender to obtain a calendered film:
p6, thermal curing: attaching the TPU coated film to the surface of the rolled film, and performing thermosetting treatment to obtain a cured film;
p7, post-treatment: and cleaning the cured film by using absolute ethyl alcohol, and drying to obtain the conductive film.
Preferably, the TPU-based film and the TPU-coated film in the step P1 include 50% -70% of TPU particles, 10% -15% of nano silica master batch, 5% -10% of antioxidant, 5% -10% of foaming agent and 3% -6% of calcium carbonate filler, and the preparation method includes the following steps:
s1, weighing the raw materials according to the mass percentage for later use;
s2, adding the raw materials into a mixer, and uniformly stirring for 15 to 20 minutes at the speed of 30 to 45 revolutions per minute to obtain a mixed raw material;
s3, placing the mixed raw materials into a dryer, heating the mixed raw materials at 80-90 ℃, and drying the mixed raw materials for 1-2 hours to obtain dried raw materials;
s4, feeding the dry raw materials into a casting machine, and extruding to form a film blank;
and S5, feeding the film blank into a calender for calendering to obtain a TPU base film with the thickness of 0.3 mm to 0.5 mm and a TPU coated film with the thickness of 0.1 mm to 0.2 mm.
Preferably, the antioxidant is a hindered phenol type antioxidant.
Preferably, the foaming agent is one or a mixture of more of azodicarbonamide, methylsulfonyl urea, sodium bicarbonate and sodium citrate.
Preferably, the thermosetting adhesive in the step P2 is one of epoxy resin, phenolic resin or polyurethane.
Preferably, the ultrasonic dispersion treatment in the step P4 is carried out under the conditions of ultrasonic frequency of 25KHz-30KHz, power of 800w-1000w and time of 15 minutes-30 minutes.
Preferably, the coating thickness of the P5 step is 20 to 30 micrometers.
Preferably, the heat curing temperature of the P6 step is 50 to 55 degrees celsius, and the time is 20 to 25 minutes.
Preferably, the drying in the step P7 is natural airing at room temperature.
Preferably, the mass percentage of the nano silver nitrate and the thermosetting adhesive in the P2 step is 1: 5-8.
According to the preparation method of the TPU conductive film, the base film and the film are prepared, the conductive liquid is prepared in a combined manner for coating treatment, and then the film is rolled and compounded on the surface, so that the overall adhesion stability can be ensured, peeling is avoided, the overall structural strength is improved, the film is made of materials in reasonable proportion, the process is simplified, the control flow is facilitated, the convenience in production and processing and the use stability can be greatly improved, and the popularization and the use are facilitated.
Example 1
A preparation method of a TPU conductive film comprises the following steps:
p1, preparation of film: producing a TPU base film and a TPU film by adopting a TPU raw material through a vacuum hot-press molding technology for later use;
p2, preparation of conductive agent: adding nano silver nitrate into the thermosetting adhesive, and uniformly stirring for 20 to 30 minutes to obtain a conductive agent;
p3, preparing a conductive liquid: placing a conductive agent in a propanol solution, and diluting according to the proportion of 1:5-8 to obtain a conductive solution;
p4, ultrasonic dispersion: carrying out ultrasonic dispersion treatment on the conductive liquid by using an ultrasonic dispersion instrument to obtain treated conductive liquid;
p5, coating: spraying the treated conductive liquid on two surfaces of the PTU base film, and carrying out calendering and shaping treatment through a calender to obtain a calendered film:
p6, thermal curing: attaching the TPU coated film to the surface of the rolled film, and performing thermosetting treatment to obtain a cured film;
p7, post-treatment: and cleaning the cured film by using absolute ethyl alcohol, and drying to obtain the conductive film.
Preferably, the TPU-based film and the TPU-coated film in the P1 step include 66% of TPU particles, 15% of nano silica master batch, 6% of antioxidant, 8% of foaming agent and 5% of calcium carbonate filler, and the preparation method includes the following steps:
s1, weighing the raw materials according to the mass percentage for later use;
s2, adding the raw materials into a mixer, and uniformly stirring for 15 to 20 minutes at the speed of 30 to 45 revolutions per minute to obtain a mixed raw material;
s3, placing the mixed raw materials into a dryer, heating the mixed raw materials at 80-90 ℃, and drying the mixed raw materials for 1-2 hours to obtain dried raw materials;
s4, feeding the dry raw materials into a casting machine, and extruding to form a film blank;
and S5, feeding the film blank into a calender for calendering to obtain a TPU base film with the thickness of 0.3 mm to 0.5 mm and a TPU coated film with the thickness of 0.1 mm to 0.2 mm.
Preferably, the antioxidant is a hindered phenol type antioxidant.
Preferably, the foaming agent is a mixture of azodicarbonamide and methylsulfonyl urea, and the mixing ratio is 1: 1.
Preferably, the thermosetting adhesive in the step P2 is epoxy resin.
Preferably, the ultrasonic dispersion treatment in the step P4 is carried out under the conditions of ultrasonic frequency 25KHz, power 800w and time 20 minutes.
Preferably, the coating thickness of the P5 step is 20 μm.
Preferably, the heat curing temperature of the P6 step is 50 degrees celsius, and the time is 25 minutes.
Preferably, the drying in the step P7 is natural airing at room temperature.
Preferably, the mass percentage of the nano silver nitrate and the thermosetting adhesive in the P2 step is 1: 5.
Example 2
A preparation method of a TPU conductive film comprises the following steps:
p1, preparation of film: producing a TPU base film and a TPU film by adopting a TPU raw material through a vacuum hot-press molding technology for later use;
p2, preparation of conductive agent: adding nano silver nitrate into the thermosetting adhesive, and uniformly stirring for 20 to 30 minutes to obtain a conductive agent;
p3, preparing a conductive liquid: placing a conductive agent in a propanol solution, and diluting according to the proportion of 1:5-8 to obtain a conductive solution;
p4, ultrasonic dispersion: carrying out ultrasonic dispersion treatment on the conductive liquid by using an ultrasonic dispersion instrument to obtain treated conductive liquid;
p5, coating: spraying the treated conductive liquid on two surfaces of the PTU base film, and carrying out calendering and shaping treatment through a calender to obtain a calendered film:
p6, thermal curing: attaching the TPU coated film to the surface of the rolled film, and performing thermosetting treatment to obtain a cured film;
p7, post-treatment: and cleaning the cured film by using absolute ethyl alcohol, and drying to obtain the conductive film.
Preferably, the TPU-based film and the TPU-coated film in the P1 step include 67% of TPU particles, 12% of nano silica master batch, 8% of antioxidant, 10% of foaming agent and 3% of calcium carbonate filler, and the preparation method includes the following steps:
s1, weighing the raw materials according to the mass percentage for later use;
s2, adding the raw materials into a mixer, and uniformly stirring for 15 to 20 minutes at the speed of 30 to 45 revolutions per minute to obtain a mixed raw material;
s3, placing the mixed raw materials into a dryer, heating the mixed raw materials at 80-90 ℃, and drying the mixed raw materials for 1-2 hours to obtain dried raw materials;
s4, feeding the dry raw materials into a casting machine, and extruding to form a film blank;
and S5, feeding the film blank into a calender for calendering to obtain a TPU base film with the thickness of 0.3 mm to 0.5 mm and a TPU coated film with the thickness of 0.1 mm to 0.2 mm.
Preferably, the antioxidant is a hindered phenol type antioxidant.
Preferably, the foaming agent is a mixture of sodium bicarbonate and sodium citrate, and the mixing ratio is 1: 3.
Preferably, the thermosetting adhesive in the step P2 is polyurethane.
Preferably, the ultrasonic dispersion treatment in the step P4 is carried out under the conditions of ultrasonic frequency of 30KHz, power of 1000w and time of 15 minutes.
Preferably, the coating thickness of the P5 step is 30 micrometers.
Preferably, the heat curing temperature of the P6 step is 50 degrees celsius, and the time is 25 minutes.
Preferably, the drying in the step P7 is natural airing at room temperature.
Preferably, the mass percentage of the nano silver nitrate and the thermosetting adhesive in the P2 step is 1: 8.
Example 3
A preparation method of a TPU conductive film comprises the following steps:
p1, preparation of film: producing a TPU base film and a TPU film by adopting a TPU raw material through a vacuum hot-press molding technology for later use;
p2, preparation of conductive agent: adding nano silver nitrate into the thermosetting adhesive, and uniformly stirring for 20 to 30 minutes to obtain a conductive agent;
p3, preparing a conductive liquid: placing a conductive agent in a propanol solution, and diluting according to the proportion of 1:5-8 to obtain a conductive solution;
p4, ultrasonic dispersion: carrying out ultrasonic dispersion treatment on the conductive liquid by using an ultrasonic dispersion instrument to obtain treated conductive liquid;
p5, coating: spraying the treated conductive liquid on two surfaces of the PTU base film, and carrying out calendering and shaping treatment through a calender to obtain a calendered film:
p6, thermal curing: attaching the TPU coated film to the surface of the rolled film, and performing thermosetting treatment to obtain a cured film;
p7, post-treatment: and cleaning the cured film by using absolute ethyl alcohol, and drying to obtain the conductive film.
Preferably, the TPU-based film and the TPU-coated film in the step P1 include 50% -70% of TPU particles, 10% -15% of nano silica master batch, 5% -10% of antioxidant, 5% -10% of foaming agent and 3% -6% of calcium carbonate filler, and the preparation method includes the following steps:
s1, weighing the raw materials according to the mass percentage for later use;
s2, adding the raw materials into a mixer, and uniformly stirring for 15 to 20 minutes at the speed of 30 to 45 revolutions per minute to obtain a mixed raw material;
s3, placing the mixed raw materials into a dryer, heating the mixed raw materials at 80-90 ℃, and drying the mixed raw materials for 1-2 hours to obtain dried raw materials;
s4, feeding the dry raw materials into a casting machine, and extruding to form a film blank;
and S5, feeding the film blank into a calender for calendering to obtain a TPU base film with the thickness of 0.3 mm to 0.5 mm and a TPU coated film with the thickness of 0.1 mm to 0.2 mm.
Preferably, the antioxidant is a hindered phenol type antioxidant.
Preferably, the blowing agent is azodicarbonamide.
Preferably, the thermosetting adhesive in the step P2 is phenolic resin.
Preferably, the ultrasonic dispersion treatment in the step P4 is carried out under the conditions of ultrasonic frequency of 30KHz, power of 800w and time of 20 minutes.
Preferably, the coating thickness of the P5 step is 25 μm.
Preferably, the heat curing temperature of the P6 step is 55 degrees celsius, and the time is 22 minutes.
Preferably, the drying in the step P7 is natural wind drying.
Preferably, the mass percentage of the nano silver nitrate and the thermosetting adhesive in the P2 step is 1: 6.
Claims (10)
1. A preparation method of a TPU conductive film is characterized by comprising the following steps: the preparation method of the TPU conductive film comprises the following steps:
p1, preparation of film: producing a TPU base film and a TPU film by adopting a TPU raw material through a vacuum hot-press molding technology for later use;
p2, preparation of conductive agent: adding nano silver nitrate into the thermosetting adhesive, and uniformly stirring for 20 to 30 minutes to obtain a conductive agent;
p3, preparing a conductive liquid: placing a conductive agent in a propanol solution, and diluting according to the proportion of 1:5-8 to obtain a conductive solution;
p4, ultrasonic dispersion: carrying out ultrasonic dispersion treatment on the conductive liquid by using an ultrasonic dispersion instrument to obtain treated conductive liquid;
p5, coating: spraying the treated conductive liquid on two surfaces of the PTU base film, and carrying out calendering and shaping treatment through a calender to obtain a calendered film:
p6, thermal curing: attaching the TPU coated film to the surface of the rolled film, and performing thermosetting treatment to obtain a cured film;
p7, post-treatment: and cleaning the cured film by using absolute ethyl alcohol, and drying to obtain the conductive film.
2. The method for preparing a TPU conductive film according to claim 1, characterized by: the TPU base film and the TPU coated film in the step P1 comprise 50-70% of TPU particles, 10-15% of nano silicon dioxide master batch, 5-10% of antioxidant, 5-10% of foaming agent and 3-6% of calcium carbonate filler, and the preparation method comprises the following steps:
s1, weighing the raw materials according to the mass percentage for later use;
s2, adding the raw materials into a mixer, and uniformly stirring for 15 to 20 minutes at the speed of 30 to 45 revolutions per minute to obtain a mixed raw material;
s3, placing the mixed raw materials into a dryer, heating the mixed raw materials at 80-90 ℃, and drying the mixed raw materials for 1-2 hours to obtain dried raw materials;
s4, feeding the dry raw materials into a casting machine, and extruding to form a film blank;
and S5, feeding the film blank into a calender for calendering to obtain a TPU base film with the thickness of 0.3 mm to 0.5 mm and a TPU coated film with the thickness of 0.1 mm to 0.2 mm.
3. The method for preparing a TPU conductive film according to claim 2, characterized in that: the antioxidant is a hindered phenol antioxidant.
4. The method for preparing a TPU conductive film according to claim 2, characterized in that: the foaming agent is one or a mixture of azodicarbonamide, methylsulfonyl urea, sodium bicarbonate and sodium citrate.
5. The method for preparing a TPU conductive film according to claim 1, characterized by: the thermosetting adhesive in the step P2 is one of epoxy resin, phenolic resin or polyurethane.
6. The method for preparing a TPU conductive film according to claim 1, characterized by: the ultrasonic dispersion treatment condition of the step P4 is ultrasonic frequency of 25KHz-30KHz, power of 800w-1000w, and time of 15 minutes to 30 minutes.
7. The method for preparing a TPU conductive film according to claim 1, characterized by: the coating thickness of the P5 step is 20 to 30 microns.
8. The method for preparing a TPU conductive film according to claim 1, characterized by: the heat curing temperature of the P6 step is 50-55 ℃, and the time is 20-25 minutes.
9. The method for preparing a TPU conductive film according to claim 1, characterized by: the drying in the step P7 is natural airing at room temperature.
10. The method for preparing a TPU conductive film according to claim 1, characterized by: the mass percentage of the nano silver nitrate and the thermosetting adhesive in the step P2 is 1: 5-8.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111171749A (en) * | 2020-03-17 | 2020-05-19 | 晋江市诺特新材料科技有限公司 | Silicone membrane capable of being bonded with other plastic materials and preparation method thereof |
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Application publication date: 20191220 |
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