CN114148050A - Double-sided PET film-coated plate for capacitor and preparation method thereof - Google Patents

Double-sided PET film-coated plate for capacitor and preparation method thereof Download PDF

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Publication number
CN114148050A
CN114148050A CN202210124495.3A CN202210124495A CN114148050A CN 114148050 A CN114148050 A CN 114148050A CN 202210124495 A CN202210124495 A CN 202210124495A CN 114148050 A CN114148050 A CN 114148050A
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parts
pet film
double
modified pet
reaction kettle
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李进
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Changzhou Jiarong Electronics Co ltd
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Changzhou Jiarong Electronics Co ltd
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    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D7/00—Producing flat articles, e.g. films or sheets
    • B29D7/01—Films or sheets
    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/09—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyesters
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/04—Non-macromolecular additives inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J161/00—Adhesives based on condensation polymers of aldehydes or ketones; Adhesives based on derivatives of such polymers
    • C09J161/04—Condensation polymers of aldehydes or ketones with phenols only
    • C09J161/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
    • 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
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • 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
    • B32B2457/00—Electrical equipment
    • B32B2457/16—Capacitors
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2237—Oxides; Hydroxides of metals of titanium
    • C08K2003/2241—Titanium dioxide
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

The invention discloses a double-sided PET film-coated plate for a capacitor and a preparation method thereof, wherein the method comprises the following steps: the aluminum coil comprises an aluminum coil substrate, adhesive layers and modified PET films, wherein the number of the modified PET films is two, the two modified PET films are positioned on two sides of the aluminum coil substrate, and the adhesive layers are filled between the aluminum coil substrate and the modified PET films; the double-sided PET film-coated plate comprises an aluminum coiled material substrate, two adhesive layers and two modified PET films, so that the front side and the back side of the aluminum coiled material substrate can be effectively protected.

Description

Double-sided PET film-coated plate for capacitor and preparation method thereof
Technical Field
The invention relates to the technical field of power transformation equipment, in particular to a double-sided PET film-coated plate for a capacitor and a preparation method thereof.
Background
Two conductors which are close to each other, with a non-conductive insulating medium in between, constitute a capacitor. When a voltage is applied across the two plates of the capacitor, the capacitor stores charge. The capacitance of the capacitor is numerically equal to the ratio of the amount of charge on one conductive plate to the voltage between the two plates. The basic unit of capacitance of a capacitor is farad (F). The capacitor element is generally denoted by letter C in the circuit diagram.
The capacitor is a core component of the power transformation equipment and plays an important role in circuits such as tuning, bypassing, coupling, filtering and the like. The tuning circuit of the transistor radio is used, and the coupling circuit, the bypass circuit and the like of the color television are also used.
The PET film-coated plate is a raw material used in the production process of the capacitor, but most of the existing PET film-coated plates are single-sided film-coated, so that the PET film-coated plate has short service life, poor corrosion resistance, poor yellowing resistance and poor high-temperature resistance; in addition, the existing preparation method of the double-sided PET film-coated plate has complicated steps, so that the working strength of workers is high, various chemicals are greatly harmful to the workers in the preparation process, the preparation efficiency is low, the PET film is difficult to be firmly fixed on the substrate, and the PET film is easy to fall off from the substrate under the action of composite forces such as stretching, bending and stamping, so that the production quality of the PET film-coated plate is poor.
Disclosure of Invention
The invention aims to provide a double-sided PET film-coated plate for a capacitor and a preparation method thereof, and aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a double-sided PET film coated plate for a capacitor comprises: the aluminum coil comprises an aluminum coil substrate, two adhesive layers and two modified PET films, wherein the two modified PET films are located on two sides of the aluminum coil substrate, and the adhesive layers are filled between the aluminum coil substrate and the modified PET films.
Specifically, the thickness of the aluminum coiled material substrate is 0.3mm, and the aluminum coiled material substrate is one of 3003 or 3004 aluminum coiled materials.
Specifically, the thickness of the modified PET film is 0.9 μm, and the thickness of the adhesive layer is 0.1-0.3 μm.
A preparation method of a double-sided PET film-coated plate for a capacitor comprises the following steps:
s1: preparing a 0.9 mu m modified PET film;
s2: preparing an adhesive;
s3: and (5) coating a film.
Specifically, the preparation method of the 0.9 μm modified PET film in S1 is as follows:
s1.1: preparing materials: weighing 30-35 parts of dimethyl terephthalate, 40-50 parts of ethylene glycol, 1-3 parts of catalyst, 2-3 parts of stabilizer and 1-3 parts of antioxidant by using a weighing tool, and putting 30-35 parts of dimethyl terephthalate, 40-50 parts of ethylene glycol, 1-3 parts of catalyst, 2-3 parts of stabilizer and 1-3 parts of antioxidant into a reaction kettle;
s1.2: esterification reaction: controlling the temperature of the reaction kettle to be 130-;
s1.3: and (3) polycondensation reaction: putting the dihydroxy ethyl terephthalate obtained in the step S1.2 into a front polycondensation kettle, wherein the temperature of the front polycondensation kettle is 260-plus 280 ℃, the reaction time is 2-3h, the stirring speed is 3000-plus 5000 r/min, then putting the substances in the front polycondensation kettle into a rear polycondensation kettle, the temperature of the rear polycondensation kettle is 260-plus 290 ℃, the reaction time is 3-8h, and the stirring speed is 3000-plus 5000 r/min, thus obtaining PET;
s1.4: modification: adding the PET in the S1.3 into a reaction kettle, heating to 250 ℃, adding a mixture of a coupling agent and glass fiber, stirring for 3-5h, injecting into an extruder, cooling, and cutting to obtain a modified PET plate;
s1.5: stretching: and (3) respectively fixing two ends of the modified PET plate obtained in the step (S1.4) at two ends of a station of a biaxial stretching machine, and then starting the biaxial stretching machine, wherein the stretching speed is 1.5-2m/min, so that the modified PET film with the thickness of 0.9 mu m can be obtained.
Specifically, the catalyst is a mixture of zinc acetate and antimony trioxide.
Specifically, the reaction kettle used in the steps S1.1, S1.2 and S1.4 comprises a shaking mechanism, a bearing mechanism and a stirring mechanism;
the shaking mechanism comprises a mounting shell and a first motor, the first motor is mounted on one side of the mounting shell, and an output shaft of the first motor is connected with a first rotating shaft through a coupling;
the bearing mechanism comprises a casing and a liquid storage bin, the liquid storage bin is arranged inside the casing, a turntable is arranged on one side inside the mounting shell, the casing penetrates through the inside of the turntable, and the casing is fixedly connected with the turntable;
the stirring mechanism comprises a cover body and a second motor, the cover body is arranged on one side of the liquid storage bin, the second motor is arranged on one side of the cover body, an output shaft of the second motor is connected with a second rotating shaft through a coupler, and stirring blades are distributed on one side of the second rotating shaft at equal intervals;
still include temperature control mechanism, temperature control mechanism includes the electrical heating board, the electrical heating board is installed in the inner wall of depositing the liquid storehouse, the externally mounted of depositing the liquid storehouse has control deposit the temperature detect switch of the inside temperature in liquid storehouse.
Specifically, the stabilizer is HALS; the antioxidant is one of pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] and n-octadecyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate.
Specifically, the preparation method of the adhesive in S2 is as follows:
s2.1: weighing the raw material components of the adhesive: 20-30 parts of polyethylene, 15-26 parts of acrylic resin, 12-18 parts of polyurethane, 30-40 parts of epoxy resin, 30-45 parts of phenolic resin, 18-25 parts of calcium carbonate powder, 8-12 parts of titanium dioxide powder, 5-8 parts of anti-aging agent and 380 parts of diluent 200-;
s2.2: adding polyethylene, acrylic resin, polyurethane, epoxy resin, phenolic resin, calcium carbonate powder and titanium dioxide powder into a ball mill for grinding until the particle diameter of the material is not more than 20 mu m, thereby preparing a mixed powder material;
s2.3: 5-8 parts of the anti-aging agent in the step S2.1, 380 parts of the diluent and 380 parts of the mixed powder material prepared in the step S2.2 are added into a reaction kettle to be stirred for 40-60min, the stirring speed of the reaction kettle is set to be 800-1000r/min, the temperature is set to be 80-100 ℃, and when the internal temperature of the reaction kettle is reduced to 40-50 ℃ after the reaction kettle is stopped, a 100-mesh stainless steel filter screen is adopted to filter out the liquid in the reaction kettle to obtain a filtrate, namely the prepared adhesive.
Specifically, the step of coating in S3 is as follows:
s3.1: taking an aluminum coiled material, and placing the aluminum coiled material in a hot rolling mill for hot rolling;
s3.2: carrying out acid pickling passivation on the hot-rolled aluminum coil;
s3.3: then taking the modified PET film, and coating an adhesive on the surface of the modified PET film;
s3.4: applying the modified PET film on the upper and lower surfaces of the aluminum coiled material subjected to acid cleaning and passivation, and performing hot compress for 20-30min at the temperature of 50-70 ℃.
Compared with the prior art, the invention has the beneficial effects that:
the double-sided PET film-coated plate provided by the invention comprises an aluminum coiled material substrate, two adhesive layers and two modified PET films, so that the front side and the back side of the aluminum coiled material substrate can be effectively protected, and compared with a single-sided PET film-coated plate in the prior art, the double-sided PET film-coated plate has the advantages of longer service life, better corrosion resistance, better yellowing resistance and better high-temperature resistance;
the preparation method of the double-sided PET film-coated plate provided by the invention has the advantages that the steps are simple and reasonable, the working strength of workers can be effectively reduced, the damage of various chemicals to the workers in the preparation process is effectively reduced, the preparation efficiency is high, the modified PET film can be firmly fixed on the double sides of the aluminum coiled material substrate, and the modified PET film is not easy to fall off under the action of composite forces such as stretching, bending and stamping on the aluminum coiled material substrate, so that the production quality of the double-sided PET film-coated plate is ensured;
and when the second motor drives the second rotating shaft and the stirring blades to stir the material, the first motor is matched with the first rotating shaft to drive the sleeve shell and the rotary disc to rotate to shake the material uniformly, so that the full fusion among all the raw materials is facilitated, and the quality of the prepared modified PET plate is improved.
Drawings
FIG. 1 is a schematic structural diagram of a double-sided PET film coated plate according to the present invention;
FIG. 2 is a flow chart of a method for preparing a double-sided PET film coated plate according to the present invention;
FIG. 3 is a front view of a reaction kettle used in the preparation of a double-sided PET film coated plate for a capacitor;
FIG. 4 is a schematic structural view showing the internal cross section of a middle mounting shell of a reaction vessel used in the production of a double-sided PET film coated plate for a capacitor;
FIG. 5 is a schematic diagram showing the internal cross-sectional structure of a liquid storage tank in a reaction kettle used for preparing a double-sided PET film coated plate for a capacitor;
FIG. 6 is a schematic structural diagram of a middle casing of a reaction kettle used for preparing a double-sided PET film coated plate for a capacitor.
In the figure: 1. an aluminum coil substrate; 2. an adhesive layer; 3. modifying a PET film; 4. a card slot; 40. a shaking-up mechanism; 41. mounting a shell; 42. a first motor; 43. a first rotating shaft; 44. a turntable; 45. an annular slide rail; 46. a slider; 50. a carrying mechanism; 51. a housing; 52. a liquid storage bin; 521. an electrical heating plate; 522. a temperature control switch; 53. a connecting plate; 54. a bolt; 55. a clamping block; 60. a stirring mechanism; 61. a cover body; 62. a second motor; 63. a seal ring; 64. a second rotating shaft; 65. stirring the leaves.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1 to 2, a double-sided PET film coated board for a capacitor includes: the aluminum coil comprises an aluminum coil substrate, two adhesive layers and two modified PET films, wherein the two modified PET films are located on two sides of the aluminum coil substrate, and the adhesive layers are filled between the aluminum coil substrate and the modified PET films.
The thickness of the aluminum coiled material substrate is 0.3mm, and the aluminum coiled material substrate is one of 3003 or 3004 aluminum coiled materials; the thickness of the modified PET film is 0.9 μm, and the thickness of the adhesive layer is 0.1-0.3 μm.
A preparation method of a double-sided PET film-coated plate for a capacitor comprises the following steps:
s1: preparing a 0.9 mu m modified PET film;
s2: preparing an adhesive;
s3: and (5) coating a film.
Specifically, the preparation method of the 0.9 μm modified PET film in S1 is as follows:
s1.1: preparing materials: weighing 35 parts of dimethyl terephthalate, 40 parts of ethylene glycol, 1 part of catalyst, 2 parts of stabilizer and 1 part of antioxidant by using a weighing tool, and putting 35 parts of dimethyl terephthalate, 40 parts of ethylene glycol, 1 part of catalyst, 2 parts of stabilizer and 1 part of antioxidant into a reaction kettle;
s1.2: esterification reaction: controlling the temperature of the reaction kettle to be 160 ℃, and the stirring speed to be 1500r/min, and reacting for 60min to obtain the dihydroxy ethyl terephthalate;
s1.3: and (3) polycondensation reaction: putting the dihydroxy ethyl terephthalate obtained in the step S1.2 into a pre-polycondensation kettle at the temperature of 260 ℃ for 3 hours at the stirring speed of 5000 r/min, putting the substances in the pre-polycondensation kettle into a post-polycondensation kettle at the temperature of 290 ℃ for 8 hours at the stirring speed of 5000 r/min, and thus obtaining PET;
s1.4: modification: adding the PET in the S1.3 into a reaction kettle, heating to 250 ℃, adding a mixture of a coupling agent and glass fiber, stirring for 3 hours, injecting into an extruder, cooling and cutting to obtain a modified PET plate;
s1.5: stretching: and (3) respectively fixing two ends of the modified PET plate obtained in the step (S1.4) at two ends of a station of a biaxial stretching machine, and then starting the biaxial stretching machine, wherein the stretching speed is 1.5-2m/min, so that the modified PET film with the thickness of 0.9 mu m can be obtained.
The reaction vessels used in steps S1.1, S1.2 and S1.4 comprise: a shaking mechanism 40, a bearing mechanism 50 and a stirring mechanism 60.
Referring to fig. 3 and 4, the shaking mechanism 40 includes a mounting shell 41, a first motor 42 and a turntable 44, the first motor 42 is mounted on one side of the mounting shell 41, an output shaft of the first motor 42 is connected with a first rotating shaft 43 through a coupling, in order to enhance the stability of the turntable 44 during movement, an annular slide rail 45 is mounted on one side inside the mounting shell 41, a slide block 46 is connected inside the annular slide rail 45 in a sliding manner, and one side of the slide block 46 is fixedly connected with the turntable 44.
Referring to fig. 3-6, the bearing mechanism 50 includes a casing 51, a liquid storage bin 52 and a connecting plate 53, the liquid storage bin 52 is disposed inside the casing 51, the rotating plate 44 is disposed on one side inside the mounting shell 41, the casing 51 penetrates through the rotating plate 44, the casing 51 is fixedly connected with the rotating plate 44, in order to facilitate determining the mounting position of the cover body 61, the connecting plate 53 is fixedly connected to one side of the casing 51, one side of the connecting plate 53 is provided with a slot 4, a clamping block 55 is clamped inside the slot 4, one side of the clamping block 55 is fixedly connected with the cover body 61, in order to facilitate fixing the position of the cover body 61, one side of the cover body 61 is in threaded connection with a bolt 54, one end of the bolt 54 is in threaded connection with the connecting plate 53, in order to prevent liquid leakage during homogenization, one end of the first rotating shaft 43 is fixedly connected with the casing 51, and one side of the cover body 61 is fixedly connected with a sealing ring 63;
the liquid storage device is characterized by further comprising a temperature control mechanism, wherein the temperature control mechanism comprises an electric heating plate 521, the electric heating plate 521 is installed in the inner wall of the liquid storage bin 52, and a temperature control switch 522 for controlling the internal temperature of the liquid storage bin 52 is installed outside the liquid storage bin 52.
Referring to fig. 3 to 5, the stirring mechanism 60 includes a cover 61, a second motor 62 and stirring blades 65, the cover 61 is disposed on one side of the liquid storage bin 52, the second motor 62 is mounted on one side of the cover 61, in order to facilitate stirring of the material in the liquid storage bin 52, an output shaft of the second motor 62 is connected to a second rotating shaft 64 through a coupling, and the stirring blades 65 are equidistantly mounted on one side of the second rotating shaft 64.
In use, for example, step S1.1: 35 parts of dimethyl terephthalate, 40 parts of ethylene glycol, 1 part of catalyst, 2 parts of stabilizer and 1 part of antioxidant are put into a liquid storage bin 52, a cover body 61 is connected with the liquid storage bin 52, a clamping block 55 is clamped into a clamping groove 4, a bolt 54 is rotated to fix the position of the cover body 61, then the temperature inside the liquid storage bin 52 is set through a temperature control switch 522, the temperature inside the liquid storage bin 52 is controlled to be 160 ℃, a first motor 42 and a second motor 62 are started through a switch group, the second motor 62 drives a second rotating shaft 64 and a stirring blade 65 to stir materials, the rotating speed of the second motor 62 is 1500r/min, the first motor 42 is matched with a first rotating shaft 43 to drive a sleeve 51 and a rotating disc 44 to rotate the materials to shake the materials evenly, and the dihydroxyethyl terephthalate can be obtained after reaction for 60min, then the cover body 61 is detached, and the liquid storage bin 52 is taken out, and the reaction kettle is characterized in that the second motor 62 drives the second rotating shaft 64 and the stirring blade 65 to stir the materials, and simultaneously the first motor 42 is matched with the first rotating shaft 43 to drive the sleeve 51 and the turntable 44 to rotate to shake the materials uniformly, so that the full fusion among all the raw materials is facilitated, and the quality of the prepared dihydroxy ethyl phthalate is improved;
and similarly, the step S1.4 is continuously completed according to the operation, which is favorable for improving the quality of the prepared modified PET plate.
Specifically, the catalyst is a mixture of zinc acetate and antimony trioxide; the stabilizer is HALS; the antioxidant is one of pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] and n-octadecyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate.
Specifically, the preparation method of the adhesive in S2 is as follows:
s2.1: weighing the raw material components of the adhesive: 30 parts of polyethylene, 26 parts of acrylic resin, 18 parts of polyurethane, 40 parts of epoxy resin, 45 parts of phenolic resin, 25 parts of calcium carbonate powder, 12 parts of titanium dioxide powder, 8 parts of anti-aging agent and 380 parts of diluent;
s2.2: adding polyethylene, acrylic resin, polyurethane, epoxy resin, phenolic resin, calcium carbonate powder and titanium dioxide powder into a ball mill for grinding until the particle diameter of the material is not more than 20 mu m, thereby preparing a mixed powder material;
s2.3: and (3) adding 8 parts of the anti-aging agent and 380 parts of the diluent in the step (S2.1) and the mixed powder material prepared in the step (S2.2) into a reaction kettle, stirring for 60min, wherein the stirring speed of the reaction kettle is set to 1000r/min, the temperature is set to 100 ℃, and when the internal temperature of the reaction kettle is reduced to 50 ℃ after the reaction kettle is stopped, filtering the liquid in the reaction kettle by using a 100-mesh stainless steel filter screen to obtain filtrate, namely the prepared adhesive.
Specifically, the step of coating in S3 is as follows:
s3.1: taking an aluminum coiled material, and placing the aluminum coiled material in a hot rolling mill for hot rolling;
s3.2: carrying out acid pickling passivation on the hot-rolled aluminum coil;
s3.3: then taking the modified PET film, and coating an adhesive on the surface of the modified PET film;
s3.4: and (3) applying the modified PET films on the upper surface and the lower surface of the aluminum coiled material subjected to acid cleaning and passivation for hot compress for 30min, and controlling the temperature at 70 ℃.
The double-sided PET film-coated plate can be obtained, and the performance data are shown in the following table:
performance data of double-sided PET film-coated plate
Figure 57736DEST_PATH_IMAGE002
Example two
The difference between this embodiment and the first embodiment is:
a preparation method of a double-sided PET film-coated plate for a capacitor comprises the following steps:
s1: preparing a 0.9 mu m modified PET film;
s2: preparing an adhesive;
s3: and (5) coating a film.
Specifically, the preparation method of the 0.9 μm modified PET film in S1 is as follows:
s1.1: preparing materials: weighing 32 parts of dimethyl terephthalate, 42 parts of ethylene glycol, 1 part of catalyst, 2 parts of stabilizer and 1 part of antioxidant by using a weighing tool, and putting the 32 parts of dimethyl terephthalate, 42 parts of ethylene glycol, 1 part of catalyst, 2 parts of stabilizer and 1 part of antioxidant into a reaction kettle;
s1.2: esterification reaction: controlling the temperature of the reaction kettle to be 170 ℃, and the stirring speed to be 1500r/min, and reacting for 60min to obtain the dihydroxy ethyl terephthalate;
s1.3: and (3) polycondensation reaction: putting the dihydroxy ethyl terephthalate obtained in the step S1.2 into a pre-polycondensation kettle at the temperature of 270 ℃ for 3h, and at the stirring speed of 5000 r/min, putting the substances in the pre-polycondensation kettle into a post-polycondensation kettle at the temperature of 290 ℃ for 8h, and at the stirring speed of 5000 r/min, so as to obtain PET;
s1.4: modification: and (3) adding the PET in the S1.3 into a reaction kettle, heating to 250 ℃, adding a mixture of a coupling agent and glass fiber, stirring for 3 hours, injecting into an extruder, cooling and cutting to obtain the modified PET plate.
Specifically, the catalyst is a mixture of zinc acetate and antimony trioxide.
In particular, the stabilizer is HALS.
Specifically, the antioxidant is one of pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] and n-octadecyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate.
Specifically, the preparation method of the adhesive in S2 is as follows:
s2.1: weighing the raw material components of the adhesive: 30 parts of polyethylene, 26 parts of acrylic resin, 18 parts of polyurethane, 40 parts of epoxy resin, 45 parts of phenolic resin, 25 parts of calcium carbonate powder, 12 parts of titanium dioxide powder, 8 parts of anti-aging agent and 380 parts of diluent;
s2.2: adding polyethylene, acrylic resin, polyurethane, epoxy resin, phenolic resin, calcium carbonate powder and titanium dioxide powder into a ball mill for grinding until the particle diameter of the material is not more than 20 mu m, thereby preparing a mixed powder material;
s2.3: and (3) adding 8 parts of the anti-aging agent and 380 parts of the diluent in the step (S2.1) and the mixed powder material prepared in the step (S2.2) into a reaction kettle, stirring for 60min, wherein the stirring speed of the reaction kettle is set to 1000r/min, the temperature is set to 100 ℃, and when the internal temperature of the reaction kettle is reduced to 50 ℃ after the reaction kettle is stopped, filtering the liquid in the reaction kettle by using a 100-mesh stainless steel filter screen to obtain filtrate, namely the prepared adhesive.
Specifically, the step of coating in S3 is as follows:
s3.1: taking an aluminum coiled material, and placing the aluminum coiled material in a hot rolling mill for hot rolling;
s3.2: carrying out acid pickling passivation on the hot-rolled aluminum coil;
s3.3: then taking the modified PET film, and coating an adhesive on the surface of the modified PET film;
s3.4: and (3) applying the modified PET films on the upper surface and the lower surface of the aluminum coiled material subjected to acid cleaning and passivation for hot compress for 30min, and controlling the temperature at 70 ℃.
The double-sided PET film-coated plate can be obtained, and the performance data are shown in the following table:
performance data of double-sided PET film-coated plate
Figure 167381DEST_PATH_IMAGE004
EXAMPLE III
The present embodiment is different from the first and second embodiments in that:
a preparation method of a double-sided PET film-coated plate for a capacitor comprises the following steps:
s1: preparing a 0.9 mu m modified PET film;
s2: preparing an adhesive;
s3: and (5) coating a film.
Specifically, the preparation method of the 0.9 μm modified PET film in S1 is as follows:
s1.1: preparing materials: weighing 31 parts of dimethyl terephthalate, 41 parts of ethylene glycol, 1 part of catalyst, 2 parts of stabilizer and 1 part of antioxidant by using a weighing tool, and putting 31 parts of dimethyl terephthalate, 41 parts of ethylene glycol, 1 part of catalyst, 2 parts of stabilizer and 1 part of antioxidant into a reaction kettle;
s1.2: esterification reaction: controlling the temperature of the reaction kettle to be 180 ℃, stirring the mixture at a rotating speed of 1500r/min, and reacting the mixture for 60min to obtain the dihydroxy ethyl terephthalate;
s1.3: and (3) polycondensation reaction: putting the dihydroxy ethyl terephthalate obtained in the step S1.2 into a pre-polycondensation kettle, wherein the temperature of the pre-polycondensation kettle is 280 ℃, the reaction time is 3 hours, the stirring speed is 5000 r/min, then putting the substances in the pre-polycondensation kettle into a post-polycondensation kettle, wherein the temperature of the post-polycondensation kettle is 290 ℃, the reaction time is 8 hours, and the stirring speed is 5000 r/min, so as to obtain PET;
s1.4: modification: and (3) adding the PET in the S1.3 into a reaction kettle, heating to 250 ℃, adding a mixture of a coupling agent and glass fiber, stirring for 3 hours, injecting into an extruder, cooling and cutting to obtain the modified PET plate.
Specifically, the catalyst is a mixture of zinc acetate and antimony trioxide.
In particular, the stabilizer is HALS.
Specifically, the antioxidant is one of pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] and n-octadecyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate.
Specifically, the preparation method of the adhesive in S2 is as follows:
s2.1: weighing the raw material components of the adhesive: 24 parts of polyethylene, 15 parts of acrylic resin, 13 parts of polyurethane, 34 parts of epoxy resin, 35 parts of phenolic resin, 25 parts of calcium carbonate powder, 12 parts of titanium dioxide powder, 8 parts of anti-aging agent and 350 parts of diluent;
s2.2: adding polyethylene, acrylic resin, polyurethane, epoxy resin, phenolic resin, calcium carbonate powder and titanium dioxide powder into a ball mill for grinding until the particle diameter of the material is not more than 20 mu m, thereby preparing a mixed powder material;
s2.3: and (3) adding 8 parts of the anti-aging agent and 350 parts of the diluent in the step (S2.1) and the mixed powder material prepared in the step (S2.2) into a reaction kettle, stirring for 60min, wherein the stirring speed of the reaction kettle is set to 1000r/min, the temperature is set to 100 ℃, and when the internal temperature of the reaction kettle is reduced to 50 ℃ after the reaction kettle is stopped, filtering the liquid in the reaction kettle by using a 100-mesh stainless steel filter screen to obtain filtrate, namely the prepared adhesive.
Specifically, the step of coating in S3 is as follows:
s3.1: taking an aluminum coiled material, and placing the aluminum coiled material in a hot rolling mill for hot rolling;
s3.2: carrying out acid pickling passivation on the hot-rolled aluminum coil;
s3.3: then taking the modified PET film, and coating an adhesive on the surface of the modified PET film;
s3.4: and (3) applying the modified PET films on the upper surface and the lower surface of the aluminum coiled material subjected to acid cleaning and passivation for hot compress for 30min, and controlling the temperature at 70 ℃.
The double-sided PET film-coated plate can be obtained, and the performance data are shown in the following table:
performance data of double-sided PET film-coated plate
Figure 707952DEST_PATH_IMAGE006
The parts not involved in the present invention are the same as or can be implemented by the prior art. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. The utility model provides a condenser is with two-sided PET tectorial membrane board which characterized in that includes: the aluminum coil comprises an aluminum coil substrate (1), adhesive layers (2) and modified PET films (3), wherein the number of the modified PET films (3) is two, the two modified PET films (3) are located on two sides of the aluminum coil substrate (1), and the adhesive layers (2) are filled between the aluminum coil substrate (1) and the modified PET films (3).
2. The double-sided PET film laminated board for capacitors as claimed in claim 1, wherein: the thickness of aluminium coiled material base plate (1) is 0.3mm, aluminium coiled material base plate (1) is one of 3003 or 3004 aluminium coiled material.
3. The double-sided PET film laminated board for capacitors as claimed in claim 1, wherein: the thickness of the modified PET film (3) is 0.9 mu m, and the thickness of the adhesive layer (2) is 0.1-0.3 mu m.
4. A method for producing a double-sided PET film-coated plate for capacitors as claimed in any one of claims 1 to 3, comprising the steps of:
s1: preparing a 0.9 mu m modified PET film;
s2: preparing an adhesive;
s3: and (5) coating a film.
5. The method for manufacturing a double-sided PET film-coated plate for capacitors as claimed in claim 4, wherein: the preparation method of the 0.9-micron modified PET film in S1 comprises the following steps:
s1.1: preparing materials: weighing 30-35 parts of dimethyl terephthalate, 40-50 parts of ethylene glycol, 1-3 parts of catalyst, 2-3 parts of stabilizer and 1-3 parts of antioxidant by using a weighing tool, and putting 30-35 parts of dimethyl terephthalate, 40-50 parts of ethylene glycol, 1-3 parts of catalyst, 2-3 parts of stabilizer and 1-3 parts of antioxidant into a reaction kettle;
s1.2: esterification reaction: controlling the temperature of the reaction kettle to be 130-;
s1.3: and (3) polycondensation reaction: putting the dihydroxy ethyl terephthalate obtained in the step S1.2 into a front polycondensation kettle, wherein the temperature of the front polycondensation kettle is 260-plus 280 ℃, the reaction time is 2-3h, the stirring speed is 3000-plus 5000 r/min, then putting the substances in the front polycondensation kettle into a rear polycondensation kettle, the temperature of the rear polycondensation kettle is 260-plus 290 ℃, the reaction time is 3-8h, and the stirring speed is 3000-plus 5000 r/min, thus obtaining PET;
s1.4: modification: adding the PET in the S1.3 into a reaction kettle, heating to 250 ℃, adding a mixture of a coupling agent and glass fiber, stirring for 3-5h, injecting into an extruder, cooling, and cutting to obtain a modified PET plate;
s1.5: stretching: and (3) respectively fixing two ends of the modified PET plate obtained in the step (S1.4) at two ends of a station of a biaxial stretching machine, and then starting the biaxial stretching machine, wherein the stretching speed is 1.5-2m/min, so that the modified PET film with the thickness of 0.9 mu m can be obtained.
6. The method for manufacturing a double-sided PET film-coated plate for capacitors as claimed in claim 5, wherein: the reaction kettle used in the steps S1.1, S1.2 and S1.4 comprises a shaking mechanism (40), a bearing mechanism (50) and a stirring mechanism (60);
the shaking mechanism (40) comprises a mounting shell (41) and a first motor (42), the first motor (42) is mounted on one side of the mounting shell (41), and an output shaft of the first motor (42) is connected with a first rotating shaft (43) through a coupling;
the bearing mechanism (50) comprises a casing (51) and a liquid storage bin (52), the liquid storage bin (52) is arranged inside the casing (51), a turntable (44) is arranged on one side inside the mounting shell (41), the casing (51) penetrates through the inside of the turntable (44), and the casing (51) is fixedly connected with the turntable (44);
the stirring mechanism (60) comprises a cover body (61) and a second motor (62), the cover body (61) is arranged on one side of the liquid storage bin (52), the second motor (62) is arranged on one side of the cover body (61), an output shaft of the second motor (62) is connected with a second rotating shaft (64) through a coupling, and stirring blades (65) are distributed on one side of the second rotating shaft (64) at equal intervals;
still include temperature control mechanism, temperature control mechanism includes electric heating plate (521), electric heating plate (521) are installed in the inner wall of depositing liquid storehouse (52), the externally mounted of depositing liquid storehouse (52) has control deposit liquid storehouse (52) inside temperature detect switch (522).
7. The method for manufacturing a double-sided PET film-coated plate for capacitors as claimed in claim 5, wherein: the stabilizer is HALS; the catalyst is a mixture of zinc acetate and antimony trioxide.
8. The method for manufacturing a double-sided PET film-coated plate for capacitors as claimed in claim 5, wherein: the antioxidant is one of pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] and n-octadecyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate.
9. The method for manufacturing a double-sided PET film-coated plate for capacitors as claimed in claim 4, wherein: the preparation method of the adhesive in the S2 comprises the following steps:
s2.1: weighing the raw material components included in the adhesive according to claim 4: 20-30 parts of polyethylene, 15-26 parts of acrylic resin, 12-18 parts of polyurethane, 30-40 parts of epoxy resin, 30-45 parts of phenolic resin, 18-25 parts of calcium carbonate powder, 8-12 parts of titanium dioxide powder, 5-8 parts of anti-aging agent and 380 parts of diluent 200-;
s2.2: adding polyethylene, acrylic resin, polyurethane, epoxy resin, phenolic resin, calcium carbonate powder and titanium dioxide powder into a ball mill for grinding until the particle diameter of the material is not more than 20 mu m, thereby preparing a mixed powder material;
s2.3: 5-8 parts of the anti-aging agent in the step S2.1, 380 parts of the diluent and 380 parts of the mixed powder material prepared in the step S2.2 are added into a reaction kettle to be stirred for 40-60min, the stirring speed of the reaction kettle is set to be 800-1000r/min, the temperature is set to be 80-100 ℃, and when the internal temperature of the reaction kettle is reduced to 40-50 ℃ after the reaction kettle is stopped, a 100-mesh stainless steel filter screen is adopted to filter out the liquid in the reaction kettle to obtain a filtrate, namely the prepared adhesive.
10. The method for manufacturing a double-sided PET film-coated plate for capacitors according to claim 9, characterized in that: the step of laminating in the step S3 is as follows:
s3.1: taking an aluminum coiled material, and placing the aluminum coiled material in a hot rolling mill for hot rolling;
s3.2: carrying out acid pickling passivation on the hot-rolled aluminum coil;
s3.3: then taking the modified PET film, and coating an adhesive on the surface of the modified PET film;
s3.4: applying the modified PET film on the upper and lower surfaces of the aluminum coiled material subjected to acid cleaning and passivation, and performing hot compress for 20-30min at the temperature of 50-70 ℃.
CN202210124495.3A 2022-02-10 2022-02-10 Double-sided PET film-coated plate for capacitor and preparation method thereof Pending CN114148050A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109553759A (en) * 2017-09-26 2019-04-02 中国石化仪征化纤有限责任公司 A kind of modified PET polyester and preparation method thereof
CN213160591U (en) * 2020-08-07 2021-05-11 丘伟彬 Chemical industry medicament debugging is with device that shakes soon
CN113388334A (en) * 2021-08-17 2021-09-14 常州嘉容电子有限公司 Double-sided PET film-coated plate and preparation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109553759A (en) * 2017-09-26 2019-04-02 中国石化仪征化纤有限责任公司 A kind of modified PET polyester and preparation method thereof
CN213160591U (en) * 2020-08-07 2021-05-11 丘伟彬 Chemical industry medicament debugging is with device that shakes soon
CN113388334A (en) * 2021-08-17 2021-09-14 常州嘉容电子有限公司 Double-sided PET film-coated plate and preparation method thereof

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Application publication date: 20220308