CN112976746A - Polyester film for antistatic dry film resist and preparation method thereof - Google Patents

Polyester film for antistatic dry film resist and preparation method thereof Download PDF

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CN112976746A
CN112976746A CN202110272381.9A CN202110272381A CN112976746A CN 112976746 A CN112976746 A CN 112976746A CN 202110272381 A CN202110272381 A CN 202110272381A CN 112976746 A CN112976746 A CN 112976746A
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antistatic
polyester
layer
film
polyester layer
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CN112976746B (en
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叶世强
于涛
周慧芝
王国明
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Fuwei Films Shandong Co Ltd
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Fuwei Films Shandong Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin 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
    • 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
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08J5/18—Manufacture of 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
    • 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
    • B32B2307/21—Anti-static
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • 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
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    • C08J2479/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen, or carbon only, not provided for in groups C08J2461/00 - C08J2477/00
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    • C08J2479/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen, or carbon only, not provided for in groups C08J2461/00 - C08J2477/00
    • C08J2479/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
    • C—CHEMISTRY; METALLURGY
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    • 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
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2296—Oxides; Hydroxides of metals of zinc
    • 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
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    • C08K3/36—Silica

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Abstract

The invention discloses a polyester film for antistatic dry film resist and a preparation method thereof, relating to the technical field of polyester films, wherein an antistatic polyester layer is arranged on the upper end surface of a polyester film substrate, a surface protective layer is arranged on the upper end surface of the antistatic polyester layer, the surface protective layer adopts a polyolefin film, the antistatic polyester layer adopts an organic-inorganic composite material, wherein, an organic material adopts acrylate resin, an inorganic material adopts modified nano inorganic particles, the invention adheres an antistatic layer on the prior polyester film, effectively reduces the surface resistance of the film, enables the film to have stable and good antistatic performance, can effectively prevent static from adsorbing impurities and causing pollution to the surface of the polyester film, and simultaneously, the added antistatic layer can not influence the prior optical performance and mechanical performance of the polyester film, thereby improving the comprehensive performance of the antistatic dry film resist, simple preparation and stable and reliable product.

Description

Polyester film for antistatic dry film resist and preparation method thereof
Technical Field
The invention relates to the technical field of polyester films, in particular to a polyester film for an antistatic dry film resist and a preparation method thereof.
Background
Dry film resists are widely used as resist materials in etching or plating processes. For example, in the production of a printed wiring board, first, a dry film resist is laminated on a copper substrate, the dry film resist is covered with a mask having a pattern, exposure is performed, after the pattern exposure, the unexposed portion is removed with a developer, etching or plating treatment is further performed to form a pattern, and finally, the cured portion is removed with a remover, thereby realizing pattern transfer.
The dry film resist is generally formed by laminating a support film, a photoresist layer formed of a photosensitive resin material, and a protective film, wherein the support film is mainly a polyester film, but the conventional polyester film has a compact structure and high crystallinity, so that static electricity is easily accumulated to generate static electricity, which causes serious accidents such as dust collection, electric shock, even explosion, and the like, and therefore, it is very important to impart antistatic property to the polyester film to prevent the product from being damaged.
Disclosure of Invention
The invention provides a polyester film for an antistatic dry film resist and a preparation method thereof, relates to the technical field of polyester films, and has low surface resistance and good antistatic effect.
The specific technical scheme is that the antistatic polyester film for the dry film resist comprises: antistatic polyester layer and polyester film substrate.
The antistatic polyester layer is arranged on the upper end face of the polyester film substrate.
The antistatic polyester layer includes: first antistatic polyester layer, adhesive linkage and second antistatic polyester layer, the second antistatic polyester layer sets up the adhesive linkage upper surface, the adhesive linkage sets up first antistatic polyester layer upper surface, first antistatic polyester layer sets up top layer protective layer lower surface.
Further, the thickness of the polyester film substrate is 500 μm greater than that of the antistatic polyester layer.
Further, the thickness of the first antistatic polyester layer is 100 μm greater than that of the second antistatic polyester layer.
Further, the first antistatic polyester layer and the second antistatic polyester layer are made of organic-inorganic composite materials, wherein the organic materials are acrylate resins, and the inorganic materials are modified nano inorganic particles.
Further, the antistatic polyester layer comprises the following components in parts by weight:
Figure BDA0002974894840000021
furthermore, the conductive polymer is mainly one or a combination of a plurality of polypyrrole, polythiophene and polyaniline.
Further, the nano inorganic particles comprise one or the combination of nano zinc oxide, nano silicon dioxide and nano titanium dioxide particles.
A preparation method of a polyester film for an antistatic dry film resist comprises the following steps:
(a) preparation of the antistatic polyester layer
S1, accurately weighing modified nano inorganic particles, acrylonitrile, ethyl acrylate, modified conductive polymer and methacrylic acid in certain mass;
s2, reacting for 1-3 hours at the temperature of 60-80 ℃;
s3, continuously preserving the heat for 1-2 hours at the temperature of 40-60 ℃;
s4, cooling the synthesized resin to room temperature to obtain acrylate resin;
s5, feeding the acrylate resin into a screw extruder for melting, and performing melt extrusion at 220-320 ℃, wherein the melt forms an amorphous thick sheet on a rotating cooling roller;
s6, uniformly coating an adhesive on the amorphous thick sheet, and forming the adhesive layer after shaping;
s7, continuously extruding acrylate resin on the bonding layer to form an amorphous thick sheet;
s8, preheating the thick sheet, longitudinally stretching the thick sheet by 4-6 times, and transversely stretching the thick sheet by 2-3 times;
s9, carrying out heat setting on the biaxially stretched film at the temperature of 150-300 ℃ to finally obtain the antistatic polyester layer;
(b) preparation of polyester film for antistatic dry film resist
S1, cooling by blowing and attaching to the polyester film base material;
and S2, rolling to form a film, packaging and warehousing.
Further, the preparation steps of the modified conductive polymer are as follows:
s1, dissolving 8-15 parts by mass of 1- (4-aminophenyl) -2-pyrrolidone, 2-3 parts by mass of a surfactant, 30-50 parts by mass of a conductive high molecular monomer and 2-4 parts by mass of ammonium persulfate in 60-80 parts by mass of 1-2mol/L hydrochloric acid under the condition of introducing nitrogen and ice bath;
s2, stirring and reacting for 5-8h under ice bath, vacuum filtering, adding deionized water and ethanol for dissolving, and filtering;
and S3, repeating the above operations until the solution is neutral, then adding sodium hydroxide to adjust the pH value of the solution to 9, and granulating by a spray granulation method to obtain the modified conductive polymer.
By adopting the technical scheme, compared with the prior art, the antistatic layer is adhered on the original polyester film, so that the surface resistance of the film is effectively reduced, the film has stable and good antistatic performance, the pollution to the surface of the polyester film caused by the adsorption of impurities by static electricity can be effectively prevented, meanwhile, the added antistatic layer does not influence the original optical performance and mechanical performance of the polyester film, the comprehensive performance of the antistatic dry film resist is improved, the preparation is simple, and the product is stable and reliable.
Drawings
FIG. 1 is a schematic view showing the structure of a polyester film for an antistatic dry film resist.
Description of reference numerals:
1. a polyester film substrate, 2, an antistatic polyester layer,
21. the first antistatic polyester layer, 22, the adhesive layer, 23, the second antistatic polyester layer.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings and examples:
it should be noted that the structures, proportions, sizes, and other dimensions shown in the drawings and described in the specification are only for the purpose of understanding and reading the present disclosure, and are not intended to limit the scope of the present disclosure, which is defined by the following claims, and any modifications of the structures, changes in the proportions and adjustments of the sizes, without affecting the efficacy and attainment of the same, are intended to fall within the scope of the present disclosure.
In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
Referring to fig. 1, a polyester film for an antistatic dry film resist, comprising: an antistatic polyester layer 2 and a polyester film substrate 1.
The antistatic polyester layer 2 is disposed on the upper end surface of the polyester film substrate 1.
The antistatic polyester layer 2 comprises: first antistatic polyester layer 21, adhesive linkage 22 and second antistatic polyester layer 23, second antistatic polyester layer 23 sets up at adhesive linkage 22 upper surface, and adhesive linkage 22 sets up at first antistatic polyester layer 21 upper surface, and first antistatic polyester layer 21 sets up at top layer protective layer lower surface.
Further, the thickness of the polyester film substrate 1 was 500 μm larger than that of the antistatic polyester layer 2.
Further, the thickness of the first antistatic polyester layer 21 was 100 μm greater than that of the second antistatic polyester layer 23.
Further, the first antistatic polyester layer 21 and the second antistatic polyester layer 23 are made of organic-inorganic composite materials, wherein the organic materials are acrylate resins, and the inorganic materials are modified nano inorganic particles.
Further, the antistatic polyester layer 2 comprises the following components in parts by weight:
Figure BDA0002974894840000051
furthermore, the conductive polymer is mainly one or a combination of a plurality of polypyrrole, polythiophene and polyaniline.
Further, the nano inorganic particles comprise one or the combination of nano zinc oxide, nano silicon dioxide and nano titanium dioxide particles.
Example 1
The polyester film for the antistatic dry film resist comprises the following components in parts by weight: 2 parts of modified nano zinc oxide, 2 parts of acrylonitrile, 50 parts of ethyl acrylate, 3 parts of polypyrrole and 2 parts of methacrylic acid, wherein the preparation method comprises the following steps:
(a) preparation of the antistatic polyester layer 2
S1, precisely weighing 2 parts of nano zinc oxide, 2 parts of acrylonitrile, 50 parts of ethyl acrylate, 3 parts of polypyrrole and 2 parts of methacrylic acid.
S2, reacting for 1 hour at 60 ℃.
S3, keeping temperature for 1 hour at 50 ℃.
And S4, cooling the synthesized resin to room temperature to obtain the acrylate resin.
And S5, feeding the acrylate resin into a screw extruder for melting, and performing melt extrusion at 220-320 ℃, wherein the melt forms an amorphous thick sheet on a rotating cooling roller.
And S6, uniformly coating the adhesive on the amorphous thick sheet, and forming the adhesive layer 22 after shaping.
S7, continuously extruding the acrylate resin on the adhesive layer 22 to form an amorphous slab.
S8, preheating the thick sheet, stretching the thick sheet longitudinally by 4 times, and stretching the thick sheet transversely by 2 times.
S9, heat setting the film after the biaxial stretching at 200 ℃ to finally obtain the antistatic polyester layer 2.
(b) Preparation of polyester film for antistatic dry film resist
S1, air-blowing, cooling and attaching to the polyester film base material 1.
And S2, rolling to form a film, packaging and warehousing.
Further, the preparation steps of the modified conductive polymer are as follows:
s1, charging nitrogen and ice bath, dissolving 8 parts of 1- (4-aminophenyl) -2-pyrrolidone, 2 parts of surfactant, 30 parts of conductive polymer monomer and 2 parts of ammonium persulfate in 75 parts of 2mol/L hydrochloric acid.
S2, stirring and reacting for 5 hours in ice bath, vacuum filtering, adding deionized water and ethanol for dissolving, and filtering again.
And S3, repeating the above operations until the solution is neutral, then adding sodium hydroxide to adjust the pH value of the solution to 9, and granulating by a spray granulation method to obtain the modified conductive polymer.
Example 2
The polyester film for the antistatic dry film resist comprises the following components in parts by weight: 5 parts of modified nano silicon dioxide, 4 parts of acrylonitrile, 55 parts of ethyl acrylate, 1 part of polythiophene and 3 parts of methacrylic acid, and the preparation method comprises the following steps:
(a) preparation of the antistatic polyester layer 2
S1, accurately weighing 5 parts of nano silicon dioxide, 4 parts of acrylonitrile, 55 parts of ethyl acrylate, 1 part of polythiophene and 3 parts of methacrylic acid.
S2, reacting for 3 hours at 65 ℃.
S3, keeping the temperature for 1 hour at the temperature of 40 ℃.
And S4, cooling the synthesized resin to room temperature to obtain the acrylate resin.
And S5, feeding the acrylate resin into a screw extruder for melting, extruding at 260 ℃, and forming an amorphous thick sheet on a rotating cooling roller by the melt.
And S6, uniformly coating the adhesive on the amorphous thick sheet, and forming the adhesive layer 22 after shaping.
S7, continuously extruding the acrylate resin on the adhesive layer 22 to form an amorphous slab.
And S8, preheating the thick sheet, longitudinally stretching the thick sheet by 5 times, and transversely stretching the thick sheet by 2 times.
S9, heat setting the film after the biaxial stretching at 150 ℃ to finally obtain the antistatic polyester layer 2.
(b) Preparation of polyester film for antistatic dry film resist
S1, air-blowing, cooling and attaching to the polyester film base material 1.
And S2, rolling to form a film, packaging and warehousing.
Further, the preparation steps of the modified conductive polymer are as follows:
s1, dissolving 15 parts by mass of 1- (4-aminophenyl) -2-pyrrolidone, 2.5 parts by mass of a surfactant, 38 parts by mass of a conductive polymer monomer and 3 parts by mass of potassium persulfate in 60 parts by mass of 2mol/L hydrochloric acid under the condition of introducing nitrogen and ice bath.
S2, stirring and reacting for 7 hours in ice bath, vacuum filtering, adding deionized water and ethanol for dissolving, and filtering again.
And S3, repeating the above operations until the solution is neutral, then adding sodium hydroxide to adjust the pH value of the solution to 9, and granulating by a spray granulation method to obtain the modified conductive polymer.
Example 3
The polyester film for the antistatic dry film resist comprises the following components in parts by weight: 8 parts of modified nano titanium dioxide particles, 6 parts of acrylonitrile, 40 parts of ethyl acrylate, 5 parts of polyaniline and 1 part of methacrylic acid, and the preparation method comprises the following steps:
(a) preparation of the antistatic polyester layer 2
S1, accurately weighing 8 parts of nano titanium dioxide particles, 6 parts of acrylonitrile, 40 parts of ethyl acrylate, 5 parts of polyaniline and 1 part of methacrylic acid.
S2, and reacting for 2 hours at 75 ℃.
S3, keeping temperature for 2 hours under the condition of 45 ℃.
And S4, cooling the synthesized resin to room temperature to obtain the acrylate resin.
And S5, feeding the acrylate resin into a screw extruder for melting, extruding at 220 ℃, and forming an amorphous thick sheet on a rotating cooling roller by the melt.
And S6, uniformly coating the adhesive on the amorphous thick sheet, and forming the adhesive layer 22 after shaping.
S7, continuously extruding the acrylate resin on the adhesive layer 22 to form an amorphous slab.
S8, preheating the thick sheet, stretching the thick sheet longitudinally by 5 times, and stretching the thick sheet transversely by 3 times.
S9, heat setting the biaxially oriented film at 220 ℃ to finally obtain the antistatic polyester layer 2.
(b) Preparation of polyester film for antistatic dry film resist
S1, air-blowing, cooling and attaching to the base material of the polyester film 1.
And S2, rolling to form a film, packaging and warehousing.
Further, the preparation steps of the modified conductive polymer are as follows:
s1, according to parts by mass, 10 parts of 1- (4-aminophenyl) -2-pyrrolidone, 2.8 parts of surfactant, 42 parts of conductive polymer monomer and 3 parts of potassium persulfate are dissolved in 70 parts of 1mol/L hydrochloric acid under the conditions of introducing nitrogen and ice bath.
S2, stirring and reacting for 5 hours in ice bath, vacuum filtering, adding deionized water and ethanol for dissolving, and filtering again.
And S3, repeating the above operations until the solution is neutral, then adding sodium hydroxide to adjust the pH value of the solution to 9, and granulating by a spray granulation method to obtain the modified conductive polymer.
Example 4
The polyester film for the antistatic dry film resist comprises the following components in parts by weight: 4 parts of modified nano silicon dioxide, 6 parts of nano titanium dioxide particles, 10 parts of acrylonitrile, 60 parts of ethyl acrylate, 2 parts of polypyrrole and 2 parts of methacrylic acid, wherein the preparation method comprises the following steps:
(a) preparation of the antistatic polyester layer 2
S1, precisely weighing 4 parts of nano silicon dioxide, 6 parts of nano titanium dioxide particles, 10 parts of acrylonitrile, 60 parts of ethyl acrylate, 2 parts of polypyrrole and 2 parts of methacrylic acid under the protection of nitrogen.
S2, reacting for 2 hours at 80 ℃.
S3, keeping temperature for 2 hours at 60 ℃.
And S4, cooling the synthesized resin to room temperature to obtain the acrylate resin.
And S5, feeding the acrylate resin into a screw extruder for melting, extruding at 300 ℃, and forming an amorphous thick sheet on a rotating cooling roller by the melt.
And S6, uniformly coating the adhesive on the amorphous thick sheet, and forming the adhesive layer 22 after shaping.
And S7, continuously extruding the acrylate resin on the bonding layer to form an amorphous thick sheet.
S8, preheating the thick sheet, stretching the thick sheet longitudinally by 6 times, and stretching the thick sheet transversely by 3 times.
S9, heat setting the film after the biaxial stretching at 300 ℃ to finally obtain the antistatic polyester layer 2.
(b) Preparation of polyester film for antistatic dry film resist
S1, air-blowing, cooling and attaching to the polyester film base material 1.
And S2, rolling to form a film, packaging and warehousing.
Comparative example 1
The antistatic polyester layer was prepared in the same manner as in example 1 except that the antistatic polyester layer was the first antistatic polyester layer 21.
Comparative example 2
The antistatic polyester layer was prepared in the same manner as in example 2 except that the antistatic polyester layer was the first antistatic polyester layer 21.
Comparative examples 3 to 4
A commercially available polyester film has a surface protective layer 1 attached to one side thereof.
The polyester films obtained in examples 1 to 4 and comparative examples 1 to 4 were subjected to surface resistance, haze, light transmittance, tensile strength and breaking strength tests, respectively, and the results of the property tests are shown in Table 1.
The performance test methods in table 1 are as follows:
(1) surface resistance test
The polyester films obtained in examples 1 to 4 and comparative examples 1 to 3 were cut into a size of 10 x 10mm, and the surface resistance of the antistatic coating was measured on a high resistance meter (model: SME-8310).
(2) Haze and light transmittance test
The polyester films obtained in examples 1 to 4 and comparative examples 1 to 3 were subjected to ASTM D-1003 standard test, and the haze and transmittance of the samples were measured.
(1) Tensile and breaking Strength test
The polyester films obtained in examples 1 to 4 and comparative examples 1 to 3 were subjected to ASTM D-882 standard test to determine the haze of the samples.
TABLE 1 results of Performance test of polyester films of examples 1 to 4 and comparative examples 1 to 4
Figure BDA0002974894840000111
It can be seen from the data that the polyester films for antistatic dry film resists prepared in examples 1 to 4 have surface resistances significantly lower than those of the polyester films of comparative examples 3 and 4 and excellent antistatic properties compared to those of comparative examples 3 and 4, and that the polyester films for antistatic dry film resists prepared in examples 1 to 4 have optical properties such as light transmittance and haze that are not significantly changed compared to those of comparative examples 3 and 4, indicating that the light transmittance is not affected by the addition of the antistatic layer and the photosensitivity of the dry film resist is not affected.
In addition, the surface resistance of the polyester films in the embodiments 1 and 2 is obviously reduced compared with that of the polyester films in the comparative examples 1 and 2, which shows that the resistance of the polyester film can be further improved by adding the second antistatic polyester layer 23 as the resistance buffer layer, and meanwhile, the added second antistatic polyester layer 23 does not affect the optical properties and mechanical properties such as light transmittance, tensile strength and the like of the whole polyester film, and the use effect of the polyester film is not affected.

Claims (9)

1. A polyester film for an antistatic dry film resist, comprising: an antistatic polyester layer (2) and a polyester film substrate (1);
the antistatic polyester layer (2) is arranged on the upper end face of the polyester film base material (1);
the antistatic polyester layer (2) comprises: first antistatic polyester layer (21), adhesive linkage (22) and second antistatic polyester layer (23), second antistatic polyester layer (23) set up adhesive linkage (22) upper surface, adhesive linkage (22) set up first antistatic polyester layer (21) upper surface, first antistatic polyester layer (21) set up surface protection layer lower surface.
2. The polyester film for antistatic dry film resist according to claim 1, wherein the thickness of the polyester film base material (1) is 500 μm greater than the thickness of the antistatic polyester layer (2).
3. The polyester film for antistatic dry film resist according to claim 1, wherein the thickness of the first antistatic polyester layer (21) is 100 μm greater than the thickness of the second antistatic polyester layer (23).
4. The polyester film for antistatic dry film resist according to claim 1, wherein the first antistatic polyester layer (21) and the second antistatic polyester layer (23) are made of organic-inorganic composite material, wherein the organic material is acrylate resin, and the inorganic material is modified nano inorganic particles.
5. The polyester film for antistatic dry film resist according to claim 1, wherein the antistatic polyester layer (2) comprises the following components in parts by weight:
Figure FDA0002974894830000011
Figure FDA0002974894830000021
6. the polyester film for antistatic dry film resist according to claim 5, wherein the conductive polymer is mainly one or a combination of polypyrrole, polythiophene and polyaniline.
7. The antistatic dry film resist according to claim 5, wherein the nano inorganic particles comprise one or a combination of nano zinc oxide, nano silicon dioxide, nano titanium dioxide particles.
8. A method for preparing the polyester film for an antistatic dry film resist according to any one of claims 1 to 7, comprising the steps of:
(a) preparation of the antistatic polyester layer (2)
S1, accurately weighing modified nano inorganic particles, acrylonitrile, ethyl acrylate, modified conductive polymer and methacrylic acid in certain mass;
s2, reacting for 1-3 hours at the temperature of 60-80 ℃;
s3, continuously preserving the heat for 1-2 hours at the temperature of 40-60 ℃;
s4, cooling the synthesized resin to room temperature to obtain acrylate resin;
s5, feeding the acrylate resin into a screw extruder for melting, and performing melt extrusion at 220-320 ℃, wherein the melt forms an amorphous thick sheet on a rotating cooling roller;
s6, uniformly coating an adhesive on the amorphous thick sheet, and forming the adhesive layer (22) after shaping;
s7, continuously extruding acrylate resin on the bonding layer (22) to form an amorphous thick sheet;
s8, preheating the thick sheet, longitudinally stretching the thick sheet by 4-6 times, and transversely stretching the thick sheet by 2-3 times;
s9, heat setting the film after the biaxial stretching at 150-300 ℃ to finally obtain the antistatic polyester layer (2);
(b) preparation of polyester film for antistatic dry film resist
S1, cooling by blowing and attaching to the polyester film base material (1);
and S2, rolling to form a film, packaging and warehousing.
9. The polyester film for antistatic dry film resist according to claim 8, wherein the modified conductive polymer is prepared by the steps of:
s1, dissolving 8-15 parts by mass of 1- (4-aminophenyl) -2-pyrrolidone, 2-3 parts by mass of a surfactant, 30-50 parts by mass of a conductive high molecular monomer and 2-4 parts by mass of ammonium persulfate in 60-80 parts by mass of 1-2mol/L hydrochloric acid under the condition of introducing nitrogen and ice bath;
s2, stirring and reacting for 5-8h under ice bath, vacuum filtering, adding deionized water and ethanol for dissolving, and filtering;
and S3, repeating the above operations until the solution is neutral, then adding sodium hydroxide to adjust the pH value of the solution to 9, and granulating by a spray granulation method to obtain the modified conductive polymer.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116813832A (en) * 2023-08-29 2023-09-29 富维薄膜（山东）有限公司 Acrylic resin and application thereof in polyester film for dry film resist

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111892806A (en) * 2018-05-12 2020-11-06 湖南辰砾新材料有限公司 Preparation method of composite efficient antistatic agent for plastics
CN112029128A (en) * 2020-08-28 2020-12-04 合肥乐凯科技产业有限公司 Antistatic polyester film and preparation method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111892806A (en) * 2018-05-12 2020-11-06 湖南辰砾新材料有限公司 Preparation method of composite efficient antistatic agent for plastics
CN112029128A (en) * 2020-08-28 2020-12-04 合肥乐凯科技产业有限公司 Antistatic polyester film and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116813832A (en) * 2023-08-29 2023-09-29 富维薄膜（山东）有限公司 Acrylic resin and application thereof in polyester film for dry film resist
CN116813832B (en) * 2023-08-29 2023-11-28 富维薄膜（山东）有限公司 Acrylic resin and application thereof in polyester film for dry film resist

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