CN111592675A - Multifunctional protective film material with wide applicability - Google Patents
Multifunctional protective film material with wide applicability Download PDFInfo
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- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C08J2433/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
- C08J2433/14—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen
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- 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
Abstract
The invention relates to the technical field of protective films, in particular to a multifunctional protective film material with wide applicability, which comprises a PU layer, a base material layer, a barrier layer and a protective layer which are sequentially compounded from bottom to top, wherein the protective layer comprises the following raw materials in parts by mass: 100 parts of first polyester resin, 0-60 parts of modified resin, 25-65 parts of first filler, 0.1-30 parts of auxiliary agent and 50-200 parts of solvent, and the protective layer also comprises an isocyanate curing agent which is prepared according to the proportion of isocyanate group to hydroxyl group of 0.5-1.5, and is formed by mixing the raw materials and then baking for 0.3-3min at the temperature of 110-185 ℃, and the thickness is 2-35 mu m. Compared with the prior art, the multifunctional protective film material has high protection performance, high weather resistance, super water resistance, high and low temperature resistance and the like, and can effectively protect electronic devices, photoelectric materials and the like from being damaged and corroded by the environment.
Description
Technical Field
The invention relates to the technical field of protective films, in particular to a multifunctional protective film material with wide applicability.
Background
The protective film is a widely used film material, and the film material has certain functionality, so that articles can be protected from being corroded by the outside. At present, the common types include advertisement spray painting picture protective films, building materials, electric appliance protective films, electronic element protective films and the like.
For example, application No. 201610388267.1 provides an anti-ultraviolet outdoor advertisement protective film, which has a low surface energy coating layer, an anti-ultraviolet substrate layer, a corona treatment layer and an anti-ultraviolet adhesive layer stacked in sequence from top to bottom, and can prevent fading and distortion of pictures, but only has the function of anti-ultraviolet light, and the durability in outdoor environments (high and low temperature, high temperature, etc.) cannot be guaranteed.
In addition, equipment such as electrical cabinets, electronic devices, optoelectronic materials, etc. are subject to permeation and corrosion by environmental water, oxygen, etc., so that the service life of the equipment is shortened, and in order to prevent external corrosion, a water-blocking and gas-blocking barrier film is usually used for protection. For example, the application No. CN201780053221.7 provides a protective film for electrical appliances, which is formed by depositing a fluorine-containing gas barrier film on the surface of an appliance to prevent the appliance from being potentially attacked by physical and chemical reasons such as external dissolution, corrosion, oxidative degradation, abrasive friction, etc., but due to the self-limitation of a single organic coating, the transmittance of water vapor, air, etc. is still high, and the protected appliance is still corroded by the external environment, which affects the normal use of the appliance. Application number CN201710765531 to deposit Al2O3、SiO2And deposited AlN, Si as provided in application No. CN2008102415353N4The inorganic coating has obvious moisture barrier effect, but the production process needs vacuum deposition, and the operation process has higher requirement.
Therefore, the difference of the use environments of the spray painting picture protective film, the electric device, the photoelectric material and the like is integrated, and the film material needs to be protected to adapt to the harsh use conditions of outdoor high and low temperature, high humidity and ultraviolet exposure, so that the protective film is required to have ultrahigh performance.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the invention aims to provide a multifunctional protective film material with wide applicability. Compared with the prior art, the multifunctional protective film material with wide applicability provided by the invention has high protection performance, and also has the performances of high weather resistance, super water resistance, high and low temperature resistance and the like, and can effectively protect electronic devices, photoelectric materials and the like from being damaged and corroded by environment.
The purpose of the invention is realized by the following technical scheme:
a multifunctional protective film material with wide applicability comprises a PU layer, a substrate layer, a barrier layer and a protective layer which are sequentially compounded from bottom to top;
the protective layer comprises the following raw materials in parts by weight: 100 parts of first polyester resin, 0-60 parts of modified resin, 25-65 parts of first filler, 0.1-30 parts of auxiliary agent and 50-200 parts of solvent, wherein the protective layer further comprises an isocyanate curing agent prepared according to the proportion of isocyanate groups to hydroxyl groups of 0.5-1.5, and the protective layer is formed by mixing the raw materials and then baking the mixture at the temperature of 110-185 ℃ for 0.3-3min, and the thickness of the protective layer is 2-35 mu m;
the barrier layer comprises the following raw materials in parts by weight: 100 parts of water-blocking resin, 450 parts of solvent, 15-55 parts of second filler and 20-40 parts of amino resin, wherein the barrier layer is formed by mixing the raw materials and baking the mixture at 80-170 ℃ for 0.5-2min, and the thickness of the barrier layer is 0.5-5 mu m;
the substrate layer is one of polyethylene terephthalate film, polybutylene terephthalate film and polyethylene naphthalate, and the thickness of the substrate layer is 45-350 micrometers;
the PU layer comprises the following raw materials in parts by mass: 100 parts of second polyester resin, 2.5-150 parts of modified resin, 5-180 parts of auxiliary resin, 0.1-52 parts of first filler, 0.02-20 parts of auxiliary agent and 20-230 parts of solvent, wherein the protective layer also comprises an isocyanate curing agent which is prepared according to the proportion of isocyanate groups to hydroxyl groups, and is formed by mixing the raw materials and then baking the mixture at the temperature of 110-190 ℃ for 0.3-2.5min, and the thickness of the protective layer is 0.1-10 mu m.
Wherein the solid content of the first polyester resin is 50-70%, the hydroxyl value is 30-85mg KOH/g, and the acid value is less than 6mg KOH/g;
the first filler comprises one or more of silicon dioxide, titanium dioxide, copper microspheres, cobalt microspheres, calcium carbonate and the like, and the particle size is 15nm-10 mu m.
The modified resin comprises one or more of hydroxyl acrylic resin, carboxyl acrylic resin, alicyclic alcohol graft modified acrylic resin, aliphatic alcohol graft modified acrylic resin, polyester modified organic silicon resin, acrylic acid modified organic silicon resin, epoxy modified organic silicon resin and the like, wherein the silicon content in the modified organic silicon resin is 35-65%.
Wherein each mass part of the auxiliary agent comprises 0-7 parts of wetting dispersant, 0-20 parts of coupling agent and 0.1-3 parts of organic tin catalyst; wherein the wetting dispersant comprises one or more of hydroxyl carboxylic ester type wetting dispersant, polycarboxylic polyester type wetting dispersant, acrylic resin type wetting dispersant, structured acrylic resin type wetting dispersant, fluorinated acrylic resin type wetting dispersant and the like; the coupling agent comprises one or more of titanate coupling agent, silane coupling agent, fluorine-containing coupling agent and the like; the organic tin catalyst comprises one or more of dibutyl tin dilaurate, stannous octoate, dibutyl tin diacetate, dialkyl tin dimaleate, etc.
Wherein the number average molecular weight Mn of the water-blocking resin is 2000-100000, and the water-blocking resin comprises 0-3% of polyaspartic acid, 0-10% of poly (hydroxyethyl (meth) acrylate), 0-7% of (meth) acrylic acid, 0-10% of (meth) polyacrylamide and the like according to the structural chain segment, and the main structural formula is as follows:
wherein: r1: h or CH3；
R2：
Wherein the second filler comprises one or more of organic bentonite, kaolin, montmorillonite, mud limestone, precipitated barium sulfate and the like; the amino resin comprises one or more of methylated amino resin, butylated amino resin, isobutyletherified amino resin, mixed etherified amino resin and the like.
Wherein the second polyester resin is a high branched saturated polyester resin, the solid content is 55-75%, the hydroxyl value is 20-120mg KOH/g, the acid value is less than 25mg KOH/g, and the number average molecular weight Mn is 2000-50000.
Wherein the structural unit of the second polyester resin comprises 0-25 percent of polyethylene glycol structural unit and 0-15 percent of pentaerythritol structural unit according to the molecular mass fraction of the repeating unit
Wherein the auxiliary resin is formed by mixing one or more of bisphenol A epoxy resin, glycidyl ether, hydrogenated bisphenol A epoxy resin, polycarbonate diol and the like according to any proportion.
Wherein the solvent is at least one of an ester solvent, a ketone solvent and an aromatic hydrocarbon solvent, including but not limited to ethyl acetate, butyl acetate, butanone, acetone, toluene, xylene and 100# solvent naphtha.
In particular, the multifunctional protective film material with wide applicability can be particularly applied to the fields of spray-painting advertisements, electronic devices, photoelectric materials and the like as a protective and supporting material, and can be used in the environment of-25 ℃ to 200 DEG C
The invention has the beneficial effects that: compared with the prior art, the multifunctional protective film material with wide applicability provided by the invention has high protection performance, and also has the performances of high weather resistance, super water resistance, high and low temperature resistance and the like, and can effectively protect electronic devices, photoelectric materials and the like from being damaged and corroded by environment.
Drawings
FIG. 1 is a partial cross-sectional view of the present invention;
the reference signs are: 1-PU layer, 2-substrate layer, 3-barrier layer, 4-protective layer.
Detailed Description
For the understanding of those skilled in the art, the present invention will be further described with reference to the following examples and the accompanying fig. 1, and the description of the embodiments is not intended to limit the present invention.
Example 1
The formula of the barrier layer is as follows:
mixing 100 parts of water-blocking water, 100 parts of butyl acetate, 15 parts of BENTONE SD-1 (Hamming moded) and amino resin CYMEL303LF (cyanote) accounting for 20% of the first polyester resin by mass, coating the mixture on one side of PET with the thickness of 75 microns, and baking the mixture at 90 ℃ for 2min to form the polyester resin with the thickness of 5 microns;
the formula of the protective layer is as follows:
100 parts by mass of a first polyester resin, 25 parts by mass of silica R812S (Texaco), 0.1 part by mass of BYK167 dispersant (Pico chemical), 50 parts by mass of butyl acetate, and a curing agent Z4470 (Bayer) of isocyanate (Texaco) ester in a ratio of isocyanate group to hydroxyl group of 0.5, coating the mixture on one side of PET to be coated with a barrier layer by using a doctor blade method, and drying the mixture for 3 minutes by hot air at 110 ℃ to obtain a coating with the thickness of 35 μm;
the PU layer formula comprises:
100 parts of second polyester resin, 2.5 parts of acrylic resin AC1010C (chemical industry Co., Ltd.), 5 parts of epoxy resin NPES-603 (south Asia epoxy), 0.1 part of silicon dioxide TT600 (Texaco), 0.02 part of BYK 163 dispersant (Pico chemical industry) and 20 parts of xylene by mass are dispersed in a high-speed dispersion machine at 3000r/min for 0.5 hour, then a curing agent is added according to the proportion of 0.5 part of isocyanate group and hydroxyl group for mixing, the coating is coated on the other side of the PET with the thickness of 75 mu m by using a scraper method, and the PU layer with the thickness of 4 mu m is obtained by drying for 2.5 minutes by hot air at 110 ℃.
Example 2
The formula of the barrier layer is as follows:
mixing 100 parts of water-blocking resin, 450 parts of dimethylbenzene, 55 parts of BENTONE SD-1 (Hamming moded) and 40% amino resin CYMEL243-3 (cyanote) by mass of the first polyester resin, coating the mixture on one side of PET with the thickness of 70 mu m, and baking the mixture at 100 ℃ for 0.5min to form the composite material with the thickness of 0.5 mu m;
the formula of the protective layer is as follows:
100 parts of first polyester resin, 60 parts of acrylic resin Setalux 1753SS-70 (Nepets), 65 parts of silicon dioxide R812S (degussa), 10 parts of EL-1006 dispersing agent (EONLEO), 200 parts of xylene and an isocyanate curing agent according to the proportion of 1.5 isocyanate groups and hydroxyl groups are mixed by weight, the mixture is coated on one side of PET (polyethylene terephthalate) which is pre-coated with a barrier layer, and the coating is obtained by hot air drying for 0.3min at 185 ℃ and has the thickness of 2 mu m;
the PU layer formula comprises:
100 parts of second polyester resin, 150 parts of acrylic resin Setalux 1753SS-70 (Nepetes), 180 parts of epoxy resin NPES-601 (southern Asia epoxy), 52 parts of silicon dioxide TT360 (Delosol), 20 parts of BYK182 dispersant (Pico chemical) and 230 parts of dimethylbenzene by mass are dispersed for 0.5 hour at 3000r/min in a high-speed dispersion machine, then a curing agent is added according to the proportion of isocyanate groups to hydroxyl groups of 1.5 for mixing, the coating is coated on the other side of 70 mu m thick PET by using a scraper method, and the coating is dried by hot air at 120 ℃ for 0.3min to obtain a PU layer with the thickness of 5 mu m, wherein the performance of the multifunctional protective film is shown in Table 1.
Example 3
The formula of the barrier layer is as follows:
100 parts of first polyester resin, 400 parts of ethyl acetate, 20 parts of organic montmorillonite G110(NANOCOR) and 30% amino resin CYMEL243-3 (cyanote) by mass of the first polyester resin are mixed, coated on one side of PET with the thickness of 165 mu m, and baked at 150 ℃ for 1.5min to form the polyester resin with the thickness of 1 mu m;
the formula of the protective layer is as follows:
100 parts of first polyester resin, 30 parts of acrylic resin AC1010C (chemical industry Co., Ltd.), 35 parts of R902 titanium dioxide (DuPont), 5 parts of coupling agent PC9711 (Siscob), 100 parts of ethyl acetate and an isocyanate curing agent in a proportion of 0.9 of isocyanate group and hydroxyl group are mixed by mass, the mixture is coated on one side of a pre-coated barrier layer PET by using a scraper method, and the coating is obtained by drying the mixture for 3min at 110 ℃ through hot air, wherein the thickness of the coating is 15 mu m;
the PU layer formula comprises:
100 parts of second polyester resin, 50 parts of ES-1001N organic silicon resin (shin-Etsu chemical), 5 parts of epoxy resin NPES-602 (south Asia epoxy), 0.1 part of R902 titanium dioxide, 0.02 part of coupling agent PC9711 (Sisbbo) and 20 parts of ethyl acetate by mass are dispersed for 0.5 hour at 3000R/min in a high-speed dispersion machine, then curing agent is added according to the proportion of 0.5 of isocyanate group and hydroxyl group for mixing, the coating is coated on the other side of the PET with the thickness of 165 mu m by using a scraper method, and the PU layer with the thickness of 2 mu m is obtained by drying for 2.5 minutes by hot air at 110 ℃, and the performance of the multifunctional protective film is shown in Table 1.
Example 4
The formula of the barrier layer is as follows:
mixing 100 parts of water-blocking resin, 200 parts of butanone, 25 parts of BENTONE SD-1 (Hamming modest), and 25% of amino resin CYMEL 325 (cyanite) by mass of the first polyester resin, coating the mixture on one side of PET with the thickness of 165 μm, and baking the mixture at 170 ℃ for 1.2min to form the polyester resin with the thickness of 2 μm;
the formula of the protective layer is as follows:
100 parts by mass of a first polyester, 45 parts by mass of ES-1002T silicone resin (Beacon chemical), 40 parts by mass of silica TS100 (Desmoset), 7 parts by mass of a coupling agent PC9711 (Sisco), 180 parts by mass of butanone, and an isocyanate curing agent in a ratio of isocyanate groups to hydroxyl groups of 1.2 were mixed, coated on one side of a pre-coated barrier layer PET using a doctor blade method, and dried by hot air at 150 ℃ for 2 minutes to obtain a coating having a thickness of 20 μm;
the PU layer formula comprises:
100 parts of second polyester resin, 2.5 parts of KR-5235 organic silicon resin (shin-Etsu chemical), 5 parts of epoxy resin NPES-903 (south Asia epoxy), 0.1 part of silicon dioxide OK412LC (Delosol), 0.02 part of BYK191 dispersant (Pico chemical) and 20 parts of butanone are dispersed for 0.5 hour at 3000r/min in a high-speed dispersion machine, then a curing agent is added and mixed according to the proportion that the proportion of isocyanate groups and hydroxyl groups is 0.5, the coating is coated on the other side of PET with the thickness of 165 mu m by using a doctor blade method, and a PU layer with the thickness of 3 mu m is obtained by drying for 2.5 minutes by hot air at 110 ℃, and the performance of the multifunctional protective film is shown in Table 1.
Comparative example 1
The commercially available protective film of a certain brand has the structure of a protective coating, a base material layer and a bonding layer, the total thickness is 100 micrometers, the thickness of the protective coating is 15 micrometers, the thickness of the base material layer is 80 micrometers, and the thickness of the bonding layer is 5 micrometers.
Table 1 shows the results of the coating properties of examples 1 to 4 and comparative example 1.
It should be noted that the test items of the coating performance index are specified according to the following operation specifications:
(1) and (3) testing the hardness of the coating: is executed according to GB/T6739-2006 standard;
(2) and (3) wear-resistant shakeout test of the coating: is executed according to the GB/T23988 standard;
(3) and (3) testing the water vapor transmittance: performed with reference to ASTM F1249 standard;
(4) and (3) high and low temperature resistance test: is executed according to the GB/T2423.1 standard;
TABLE 1 multifunctional protective film Performance Table
From the test results in table 1, the multifunctional protective film material provided by the invention has the characteristics of high weather resistance, high water resistance and high and low temperature resistance, meets the use requirements of protective films, and can be applied to inkjet advertisements, electronic display screens, photoelectric materials, back plate materials for photovoltaic module packaging, photovoltaic insulating strip materials, photovoltaic film-back plate integrated materials and the like.
The above-described embodiments are preferred implementations of the present invention, and the present invention may be implemented in other ways without departing from the spirit of the present invention.
Claims (10)
1. The utility model provides a extensive applicability's multi-functional protection membrane material which characterized in that: comprises a PU layer, a substrate layer, a barrier layer and a protective layer which are compounded from bottom to top in sequence;
the protective layer comprises the following raw materials in parts by weight: 100 parts of first polyester resin, 0-60 parts of modified resin, 25-65 parts of first filler, 0.1-30 parts of auxiliary agent and 50-200 parts of solvent, wherein the protective layer further comprises an isocyanate curing agent prepared according to the proportion of isocyanate groups to hydroxyl groups of 0.5-1.5, and the protective layer is formed by mixing the raw materials and then baking the mixture at the temperature of 110-185 ℃ for 0.3-3min, and the thickness of the protective layer is 2-35 mu m;
the barrier layer comprises the following raw materials in parts by weight: 100 parts of water-blocking resin, 450 parts of solvent, 15-55 parts of second filler and 20-40 parts of amino resin, wherein the barrier layer is formed by mixing the raw materials and baking the mixture at 80-170 ℃ for 0.5-2min, and the thickness of the barrier layer is 0.5-5 mu m;
the substrate layer is one of polyethylene terephthalate film, polybutylene terephthalate film and polyethylene naphthalate, and the thickness of the substrate layer is 45-350 micrometers;
the PU layer comprises the following raw materials in parts by mass: 100 parts of second polyester resin, 2.5-150 parts of modified resin, 5-180 parts of auxiliary resin, 0.1-52 parts of first filler, 0.02-20 parts of auxiliary agent and 20-230 parts of solvent, wherein the protective layer also comprises an isocyanate curing agent which is prepared according to the proportion of isocyanate groups to hydroxyl groups, and is formed by mixing the raw materials and then baking the mixture at the temperature of 110-190 ℃ for 0.3-2.5min, and the thickness of the protective layer is 0.1-10 mu m.
2. The multifunctional protective film material with wide applicability according to claim 1, characterized in that: the solid content of the first polyester resin is 50-70%, the hydroxyl value is 30-85mg KOH/g, and the acid value is less than 6mg KOH/g;
the first filler comprises one or more of silicon dioxide, titanium dioxide, copper microspheres, cobalt microspheres, calcium carbonate and the like, and the particle size is 15nm-10 mu m.
3. The multifunctional protective film material with wide applicability according to claim 1, characterized in that: the modified resin comprises one or more of hydroxyl acrylic resin, carboxyl acrylic resin, alicyclic alcohol graft modified acrylic resin, aliphatic alcohol graft modified acrylic resin, polyester modified organic silicon resin, acrylic acid modified organic silicon resin, epoxy modified organic silicon resin and the like, wherein the silicon content in the modified organic silicon resin is 35-65%.
4. The multifunctional protective film material with wide applicability according to claim 1, characterized in that: each mass part of the auxiliary agent comprises 0-7 parts of wetting dispersant, 0-20 parts of coupling agent and 0.1-3 parts of organic tin catalyst; wherein the wetting dispersant comprises one or more of hydroxyl carboxylic ester type wetting dispersant, polycarboxylic polyester type wetting dispersant, acrylic resin type wetting dispersant, structured acrylic resin type wetting dispersant, fluorinated acrylic resin type wetting dispersant and the like; the coupling agent comprises one or more of titanate coupling agent, silane coupling agent, fluorine-containing coupling agent and the like; the organic tin catalyst comprises one or more of dibutyl tin dilaurate, stannous octoate, dibutyl tin diacetate, dialkyl tin dimaleate, etc.
5. The multifunctional protective film material with wide applicability according to claim 1, characterized in that: the number average molecular weight Mn of the water-blocking resin is 2000-100000, and the water-blocking resin comprises 0-3% of polyaspartic acid, 0-10% of poly (hydroxyethyl methacrylate), 0-7% of (methyl) acrylic acid and 0-10% of (methyl) polyacrylamide according to the structural chain segment.
6. The multifunctional protective film material with wide applicability according to claim 1, characterized in that: the second filler comprises one or more of organic bentonite, kaolin, montmorillonite, mud limestone, precipitated barium sulfate and the like; the amino resin comprises one or more of methylated amino resin, butylated amino resin, isobutyletherified amino resin, mixed etherified amino resin and the like.
7. The multifunctional protective film material with wide applicability according to claim 1, characterized in that: the second polyester resin is a high branched saturated polyester resin, the solid content is 55-75%, the hydroxyl value is 20-120mg KOH/g, the acid value is less than 25mg KOH/g, and the number average molecular weight Mn is 2000-50000.
8. The multifunctional protective film material with wide applicability according to claim 1, characterized in that: the structural unit of the second polyester resin comprises 0-25% of polyethylene glycol structural unit and 0-15% of pentaerythritol structural unit according to the molecular mass fraction of the repeating unit.
9. The multifunctional protective film material with wide applicability according to claim 1, characterized in that: the auxiliary resin is formed by mixing one or more of bisphenol A epoxy resin, glycidyl ether, hydrogenated bisphenol A epoxy resin, polycarbonate diol and the like according to any proportion.
10. The multifunctional protective film material with wide applicability according to claim 1, characterized in that: the solvent is at least one of ester solvent, ketone solvent and aromatic hydrocarbon solvent.
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| CN202010269636.1A CN111592675A (en) | 2020-04-08 | 2020-04-08 | Multifunctional protective film material with wide applicability |
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| CN202010269636.1A CN111592675A (en) | 2020-04-08 | 2020-04-08 | Multifunctional protective film material with wide applicability |
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| CN111592675A true CN111592675A (en) | 2020-08-28 |
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| CN114369408A (en) * | 2021-12-14 | 2022-04-19 | 乐凯胶片股份有限公司 | Coating, color film and photovoltaic module |
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Application publication date: 20200828 |