CN121574413A - A stain-resistant and antistatic polyester film, its preparation method and application - Google Patents
A stain-resistant and antistatic polyester film, its preparation method and applicationInfo
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- CN121574413A CN121574413A CN202511360592.2A CN202511360592A CN121574413A CN 121574413 A CN121574413 A CN 121574413A CN 202511360592 A CN202511360592 A CN 202511360592A CN 121574413 A CN121574413 A CN 121574413A
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- polyester film
- antifouling
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/044—Forming conductive coatings; Forming coatings having anti-static properties
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D151/00—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
- C09D151/08—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C09D151/085—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds on to polysiloxanes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/24—Electrically-conducting paints
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2451/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2451/08—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/04—Antistatic
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Paints Or Removers (AREA)
Abstract
本发明属于聚酯薄膜技术领域，具体涉及一种防污抗静电聚酯薄膜、制备方法及应用，所述防污抗静电聚酯薄膜包括：聚酯基材和防污抗静电涂层，所述防污抗静电涂层的制备原料按重量份计包括：改性水性丙烯酸树脂10‑14份；导电高分子17‑25份；交联剂0.6‑1份；润湿剂0.1‑0.3份；去离子水60‑75份；所述改性水性丙烯酸树脂的制备原料按重量份数计为：笼型低聚倍半硅氧烷13‑17份；硬单体34‑42份；软单体30‑38份；亲水单体11‑15份；引发剂2‑4份。本发明中笼型低聚倍半硅氧烷改性的水性丙烯酸树脂能显著提升薄膜的耐污能力，制备得到的抗静电聚酯薄膜具有良好的抗污渍附着和易清洁特性。
This invention belongs to the field of polyester film technology, specifically relating to an antifouling and antistatic polyester film, its preparation method, and its application. The antifouling and antistatic polyester film comprises a polyester substrate and an antifouling and antistatic coating. The raw materials for preparing the antifouling and antistatic coating, by weight, include: 10-14 parts of modified waterborne acrylic resin; 17-25 parts of conductive polymer; 0.6-1 parts of crosslinking agent; 0.1-0.3 parts of wetting agent; and 60-75 parts of deionized water. The raw materials for preparing the modified waterborne acrylic resin, by weight, include: 13-17 parts of cage-like oligomeric silsesquioxane; 34-42 parts of hard monomer; 30-38 parts of soft monomer; 11-15 parts of hydrophilic monomer; and 2-4 parts of initiator. In this invention, the cage-like oligomeric silsesquioxane-modified waterborne acrylic resin significantly improves the film's stain resistance, and the resulting antistatic polyester film exhibits excellent anti-stain adhesion and easy-to-clean properties.
Description
Technical Field
The invention belongs to the technical field of polyester films, and particularly relates to an antifouling and antistatic polyester film, a preparation method and application thereof.
Background
The polyester film has excellent mechanical property, chemical stability and optical property, and is widely applied in the fields of packaging, electronics, optics and the like. However, the conventional polyester film is easy to accumulate dust, dirt and the like on the surface to affect the service performance and appearance, and meanwhile, the polyester film generally has higher surface resistance and is easy to generate static electricity, and in some occasions sensitive to the static electricity, such as optical equipment, the polyester film can have adverse effects.
In order to improve the antifouling and antistatic properties of polyester films, researchers have conducted a great deal of research. In terms of stain resistance, it is common to apply a coating having a low surface energy, such as a fluorine-containing or silicon-containing coating, to the surface of the film to reduce the adhesion of stains. In terms of antistatic properties, the surface resistance of the thin film can be reduced by adding conductive materials such as metal powder, carbon nanotubes, conductive polymers, and the like.
However, the existing anti-fouling antistatic coating has the problems of unstable performance, poor binding force with a substrate and the like. Therefore, it is important to develop a polyester film having excellent antifouling property, antistatic property and firm bonding with a substrate.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide an anti-fouling and antistatic polyester film, a preparation method and application thereof, so as to solve the problem that the existing polyester film is poor in anti-fouling and antistatic properties.
The aim of the invention can be achieved by the following technical scheme:
The antifouling and antistatic polyester film comprises, by weight, a polyester substrate and an antifouling and antistatic coating, wherein the preparation raw materials of the antifouling and antistatic coating comprise, by weight, 10-14 parts of modified aqueous acrylic resin, 17-25 parts of conductive polymers, 0.6-1 part of cross-linking agents, 0.1-0.3 part of wetting agents, 60-75 parts of deionized water, and the preparation raw materials of the modified aqueous acrylic resin comprise, by weight, 13-17 parts of cage-type oligomeric silsesquioxane, 34-42 parts of hard monomers, 30-38 parts of soft monomers, 11-15 parts of hydrophilic monomers and 2-4 parts of initiators.
Further, the cage-type oligomeric silsesquioxane is at least one of octaepoxypropyl cage-type oligomeric silsesquioxane and heptaisobutyl cage-type oligomeric silsesquioxane of methacrylic acid.
Further, the hard monomer is at least one of methyl methacrylate, methyl acrylate and ethyl methacrylate, and the soft monomer is at least one of butyl acrylate, butyl methacrylate and isooctyl acrylate.
Further, the hydrophilic monomer is at least one of dimethylaminoethyl methacrylate, hydroxyethyl methacrylate and 2, 2-dimethylolpropionic acid.
Further, the initiator is at least one of azodiisobutyronitrile and benzoyl peroxide
Further, the conductive polymer is a polythiophene aqueous dispersion, and the solid content of the polythiophene aqueous dispersion is 1-2%.
Further, the cross-linking agent is at least one of a polymelamine resin and a polyisocyanate resin.
Further, the wetting agent is at least one of alkyne diols and polyether organic silicon.
The preparation method of the antifouling and antistatic polyester film is characterized by comprising the following steps of:
S1, fully mixing cage-type oligomeric silsesquioxane, a hard monomer, a soft monomer, a hydrophilic monomer and an initiator to obtain a mixed solution, adding an ethylene glycol monobutyl ether solvent into a stirrer, heating to 80 ℃, slowly adding the mixed solution into the stirrer within 3 hours, preserving heat and continuously reacting for 3 hours;
s2, after heat preservation is finished, the temperature of the system is reduced to 40 ℃, then a neutralizing agent is added in the stirring process for neutralization for 30min, finally deionized water is added, and the mixture is fully and uniformly stirred and filtered, so that the cage-type oligomeric silsesquioxane modified aqueous acrylic resin is obtained;
S3, adding modified aqueous acrylic resin, conductive polymer, cross-linking agent, wetting agent and deionized water into the container, stirring at high speed for 30min to obtain antistatic coating liquid, and uniformly coating the prepared antistatic coating liquid on the surface of the polyester film to obtain the antifouling antistatic polyester film.
The antifouling and antistatic polyester film is applied to optical equipment as a protective material.
The invention has the beneficial effects that:
The invention has various remarkable beneficial effects, and is concretely as follows:
1. In terms of antistatic performance, the surface resistivity of the anti-fouling antistatic polyester film prepared by the invention is between 2.9 multiplied by 10 8-6.0×108 omega, and a good antistatic level is achieved, which benefits from reasonable addition of conductive polymers (such as polythiophene aqueous dispersion liquid) in the formula, can effectively reduce the surface resistance of the film, ensures that the film is not easy to generate static accumulation in the use process, and can meet the use requirement of static sensitive scenes.
2. The initial haze of the film prepared by the method is between 3.23 and 3.52 percent in terms of optical performance, and the numerical value is low and stable, which shows that the preparation method and the raw material selection of the invention can not cause adverse effect on the optical transparency of the polyester film, can keep excellent optical performance, and has application potential in the fields with higher requirements on the optical performance, such as optical equipment, and the like.
3. After the film prepared by the invention is subjected to a stain resistance test, the haze change is extremely small (within 0.07 percent), and the stain resistance test can be passed, so that stains such as oil drops, red ink and the like can be easily wiped without obvious residues, and the excellent performance is derived from a unique preparation process of the modified aqueous acrylic resin, wherein the introduction of the cage-type oligomeric silsesquioxane plays a key role. Compared with the comparative example 1 without adding the cage-type oligomeric silsesquioxane and the comparative example 2 adopting the commercial common aqueous acrylic resin, the haze of the comparative example 1 and the commercial common aqueous acrylic resin is greatly increased to 9.78% and 11.54% respectively after the stain resistance test, and the stain resistance test cannot pass, so that the water-based acrylic resin modified by the cage-type oligomeric silsesquioxane can obviously improve the stain resistance of the film, and the surface of the film has good stain adhesion resistance and easy cleaning characteristics.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to those skilled in the art that other drawings can be obtained according to these drawings without inventive effort.
FIG. 1 is a schematic cross-sectional structure of an anti-fouling antistatic polyester film in the invention.
In the figure, each mark is respectively indicated as 1, a polyester substrate layer, 2 and an anti-fouling antistatic layer.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
An anti-fouling antistatic polyester film comprises a polyester substrate and an anti-fouling antistatic coating, wherein the anti-fouling antistatic coating comprises the following components in parts by weight:
the modified aqueous acrylic resin comprises the following components in parts by weight:
The cage type oligomeric silsesquioxane is at least one of octaepoxypropyl cage type oligomeric silsesquioxane and heptaisobutyl methacrylate cage type oligomeric silsesquioxane. The cage-type oligomeric silsesquioxane has a unique cage-type structure, a symmetrical cubic structure and various organic groups, and can be used as a modified material to effectively improve the antifouling performance of acrylic resin. The addition amount of the cage-type oligomeric silsesquioxane is 13-17 parts, when the addition amount is less than 13 parts, the antifouling performance of the resin is poor, and when the addition amount is more than 17 parts, the stability in the resin polymerization process can be influenced.
The hard monomer is at least one selected from methyl methacrylate, methyl acrylate and ethyl methacrylate. The hard monomer can enhance the cohesive force of the acrylic resin, so that the acrylic resin has certain physical properties such as strength, hardness and the like.
The soft monomer is at least one selected from butyl acrylate, butyl methacrylate and isooctyl acrylate. The soft monomer can endow the acrylic resin with flexibility, and is beneficial to increasing the adhesive force and the adhesiveness of film formation.
The hydrophilic monomer is at least one selected from dimethylaminoethyl methacrylate, hydroxyethyl methacrylate and 2, 2-dimethylolpropionic acid. The hydrophilic monomer is introduced to introduce functional groups, can react with a cross-linking agent to enhance the adhesive force with a substrate, and hydrophilic groups are introduced to enhance the hydrophilicity. The addition amount of the hydrophilic monomer is 11-15 parts, when the addition amount of the hydrophilic monomer is less than 11 parts, the water solubility of the polymer is affected, and when the addition amount is more than 14 parts, more neutralizing agent is needed, and negative effects such as increased system viscosity, poor water resistance and the like are caused.
The initiator is at least one selected from azodiisobutyronitrile and benzoyl peroxide.
The synthesis process of the modified water-based acrylic resin comprises the steps of fully mixing cage-type oligomeric silsesquioxane, hard monomers, soft monomers, hydrophilic monomers and an initiator to obtain a mixed solution. Adding ethylene glycol monobutyl ether solvent into a stirrer, heating to 80 ℃, slowly adding the mixed solution into the stirrer within 3 hours, preserving heat and continuing to react for 3 hours, reducing the temperature of the system to 40 ℃ after the heat preservation is finished, adding a neutralizing agent into the system to neutralize for 30 minutes in the stirring process, adding deionized water, fully and uniformly stirring, and filtering to obtain the modified aqueous acrylic resin.
The conductive polymer is a polythiophene aqueous dispersion, and is selected from Changxing chemical brand G9013 and ZPD-Y010. The aqueous polythiophene dispersion is formed by dispersing polythiophene into water, and the polythiophene belongs to a conductive polymer and has the advantages of stable antistatic performance, excellent optical performance and the like. The antistatic coating liquid provided by the invention introduces polythiophene as a main raw material, and the prepared antistatic film has good antistatic effect.
The cross-linking agent is selected from the Zhan Xin Co with the brand name CYMEL-385 and the Bayer Co with the brand name BL XP2706.
The wetting agent is selected from Surfynol 440, tego 270, a Digao company.
Example 1
17 Parts of octaepoxypropyl cage-type oligomeric silsesquioxane, 38 parts of methyl methacrylate, 34 parts of butyl acrylate, 13 parts of dimethylaminoethyl methacrylate and 3 parts of azobisisobutyronitrile are taken and fully mixed to obtain a mixed solution. Adding ethylene glycol monobutyl ether solvent into a stirrer, heating to 80 ℃, slowly adding the mixed solution into the stirrer within 3 hours, preserving heat and continuously reacting for 3 hours, reducing the temperature of the system to 40 ℃ after the heat preservation is finished, adding triethylamine to adjust the PH to 8 and neutralizing for 30 minutes during stirring, adding 133 parts of deionized water, fully stirring uniformly, and filtering to obtain the modified aqueous acrylic resin
12 Parts of modified water-based acrylic resin, 21 parts of G9013, 0.8 part of CYMEL-385, 0.2 part of Surfynol 440 and 60 parts of deionized water are taken and stirred at a high speed for 30min, so that the antistatic coating liquid is obtained. And uniformly coating the prepared antistatic coating liquid on the surface of the polyester film to obtain the antifouling antistatic polyester film. The results of the performance test are shown in Table 1.
Example 2
13 Parts of heptaisobutyl cage-type oligomeric silsesquioxane methacrylate, 20 parts of methyl methacrylate, 14 parts of methyl acrylate, 22 parts of butyl acrylate, 16 parts of butyl methacrylate, 6 parts of dimethylaminoethyl methacrylate, 5 parts of hydroxyethyl methacrylate and 2 parts of benzoyl peroxide are taken and fully mixed to obtain a mixed solution. Adding ethylene glycol monobutyl ether solvent into a stirrer, heating to 80 ℃, slowly adding the mixed solution into the stirrer within 3 hours, preserving heat and continuously reacting for 3 hours, reducing the temperature of the system to 40 ℃ after the heat preservation is finished, adding triethylamine to adjust the PH to 8 and neutralizing for 30 minutes during stirring, adding 129 parts of deionized water, fully stirring uniformly, and filtering to obtain the modified aqueous acrylic resin
10 Parts of modified aqueous acrylic resin, 23 parts of ZPD-Y010, 0.6 part of BL XP2706, 0.1 part of Tego 270 and 50 parts of deionized water are taken and stirred at a high speed for 30min to obtain an antistatic coating liquid. And uniformly coating the prepared antistatic coating liquid on the surface of the polyester film to obtain the antifouling antistatic polyester film. The results of the performance test are shown in Table 1.
Example 3
10 Parts of octaepoxypropyl cage-type oligomeric silsesquioxane, 7 parts of heptaisobutyl cage-type oligomeric silsesquioxane POS, 28 parts of methyl acrylate, 24 parts of ethyl methacrylate, 16 parts of butyl methacrylate, 14 parts of isooctyl acrylate, 10 parts of hydroxyethyl methacrylate, 5 parts of 2, 2-dimethylolpropionic acid and 4 parts of azodiisobutyronitrile are taken and fully mixed to obtain a mixed solution. Adding ethylene glycol monobutyl ether solvent into a stirrer, heating to 80 ℃, slowly adding the mixed solution into the stirrer within 3 hours, preserving heat and continuously reacting for 3 hours, reducing the temperature of the system to 40 ℃ after the heat preservation is finished, adding triethylamine to adjust the PH to 8 and neutralizing for 30 minutes during stirring, adding 137 parts of deionized water, fully stirring uniformly, and filtering to obtain the modified aqueous acrylic resin
14 Parts of modified aqueous acrylic resin, 19 parts of G9013, 1 part of CYMEL-385, 0.3 part of Tego270 and 75 parts of deionized water are taken and stirred at a high speed for 30min to obtain an antistatic coating liquid. And uniformly coating the prepared antistatic coating liquid on the surface of the polyester film to obtain the antifouling antistatic polyester film. The results of the performance test are shown in Table 1.
Example 4
14 Parts of octaepoxypropyl cage-type oligomeric silsesquioxane, 36 parts of methyl acrylate, 20 parts of butyl acrylate, 16 parts of isooctyl acrylate, 7 parts of dimethylaminoethyl methacrylate, 5 parts of 2, 2-dimethylolpropionic acid and 2.5 parts of benzoyl peroxide are taken and fully mixed to obtain a mixed solution. Adding ethylene glycol monobutyl ether solvent into a stirrer, heating to 80 ℃, slowly adding the mixed solution into the stirrer within 3 hours, preserving heat and continuously reacting for 3 hours, reducing the temperature of the system to 40 ℃ after the heat preservation is finished, adding triethylamine to adjust the PH to 8 and neutralizing for 30 minutes during stirring, adding 131 parts of deionized water, fully and uniformly stirring and filtering to obtain the modified aqueous acrylic resin
11 Parts of modified aqueous acrylic resin, 25 parts of ZPD-Y010, 0.7 part of BL XP2706, 0.15 part of Surfynol 440 and 55 parts of deionized water are taken and stirred at a high speed for 30min, so that the antistatic coating liquid is obtained. And uniformly coating the prepared antistatic coating liquid on the surface of the polyester film to obtain the antifouling antistatic polyester film. The results of the performance test are shown in Table 1.
Example 5
Taking 16 parts of heptaisobutyl cage-type oligomeric silsesquioxane methacrylate, 22 parts of methyl methacrylate, 18 parts of ethyl methacrylate, 32 parts of soft monomer, 9 parts of hydroxyethyl methacrylate, 5 parts of 2, 2-dimethylolpropionic acid and 3.5 parts of azodiisobutyronitrile, and fully mixing to obtain a mixed solution. Adding ethylene glycol monobutyl ether solvent into a stirrer, heating to 80 ℃, slowly adding the mixed solution into the stirrer within 3 hours, preserving heat and continuing to react for 3 hours, reducing the temperature of the system to 40 ℃ after the heat preservation is finished, adding triethylamine to adjust the PH to 8 and neutralizing for 30 minutes during stirring, adding 135 parts of deionized water, fully and uniformly stirring and filtering to obtain the modified water-based acrylic resin.
13 Parts of modified aqueous acrylic resin, 17 parts of G9013, 0.9 part of CYMEL-385, 0.25 part of Surfynol 440 and 65 parts of deionized water are taken and stirred at a high speed for 30min, so that the antistatic coating liquid is obtained. And uniformly coating the prepared antistatic coating liquid on the surface of the polyester film to obtain the antifouling antistatic polyester film. The results of the performance test are shown in Table 1.
Comparative example 1
Acrylic resin was modified without addition of cage oligomeric silsesquioxane under the same conditions as in example 1, and the results of the performance test are shown in Table 1.
Comparative example 2
The results of the performance test using a commercially available aqueous acrylic resin XK-14 (product of Kogyo Co.) under the same conditions as in example 1 are shown in Table 1.
The performance test results of the antifouling and antistatic polyester film are shown in table 1, and the performance test methods in the table are as follows:
Surface resistance test referring to ASTMD2578, optical performance test of the instrument SIMCO ST-4 surface resistance tester referring to GB/T2410-2008.
And (3) testing the stain resistance, namely cutting the prepared film into 10cm, respectively dripping 3 drops of oil drops and red ink in parallel, wiping by using dust-free cloth, testing the haze and observing whether stain remains.
TABLE 1 test results of the performance of the anti-fouling antistatic polyester films prepared in examples 1 to 5 and comparative examples 1 to 2
From the table, it can be seen that the following experimental conclusion can be drawn in combination with the test results of examples 1 to 5 and comparative examples 1 to 2:
From the aspect of surface resistivity, the surface resistivity of the anti-fouling antistatic polyester films prepared in the examples 1-5 is 2.9X10 8-6.0×108 Ω, the surface resistivity of the anti-fouling antistatic polyester film prepared in the comparative example 1 is 5.6X10 8 Ω, the surface resistivity of the anti-fouling antistatic polyester film prepared in the comparative example 2 is 6.1X10 8 Ω, and the surface resistivity of the anti-fouling antistatic polyester film prepared in the examples and the surface resistivity of the anti-fouling antistatic polyester film prepared in the comparative example are in the same order of magnitude, so that the addition of the cage-type oligomeric silsesquioxane and the modified aqueous acrylic resin prepared in the invention are not greatly different from those of other conditions on the basis of the antistatic performance.
In terms of optical performance, the haze of examples 1-5 is between 3.23% and 3.52%, the haze of comparative example 1 is 3.34%, the haze of comparative example 2 is 3.51%, and the initial haze values of the examples are close, which indicates that the formulation and the preparation method of the invention do not have adverse effects on the optical performance of the polyester film, and can maintain good optical transparency.
Stain resistance is a key advantage of the present invention. Examples 1-5 showed very little haze change within 0.07% after the stain resistance test, and OK the stain resistance test passing, indicating that the oil droplets and red ink on the film surface could be effectively wiped, no obvious stain residue, and excellent stain resistance. And the haze of the comparative example 1 is greatly increased to 9.78% after the stain resistance test, the haze of the comparative example 2 is 11.54%, and the stain resistance test passing performance is NG, which fully shows the important effect of the cage-type oligomeric silsesquioxane modified aqueous acrylic resin on improving the stain resistance of the film. Comparative example 1 because no cage-type oligomeric silsesquioxane was added, comparative example 2 employed commercially available conventional aqueous acrylic resin, none of which gave good stain resistance to films like the modified resins of the present invention, further demonstrating the unique advantages of the modified aqueous acrylic resins of the present invention, and the key effects of cage-type oligomeric silsesquioxane in improving the stain resistance of polyester films.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the foregoing embodiments, which have been described in the foregoing description merely illustrates the principles of the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined in the appended claims.
Claims (10)
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| CN202511360592.2A CN121574413A (en) | 2025-09-23 | 2025-09-23 | A stain-resistant and antistatic polyester film, its preparation method and application |
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| CN202511360592.2A CN121574413A (en) | 2025-09-23 | 2025-09-23 | A stain-resistant and antistatic polyester film, its preparation method and application |
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