CN117487470A - Long-acting anti-aging EVA adhesive film and preparation method thereof - Google Patents

Long-acting anti-aging EVA adhesive film and preparation method thereof Download PDF

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CN117487470A
CN117487470A CN202311510608.4A CN202311510608A CN117487470A CN 117487470 A CN117487470 A CN 117487470A CN 202311510608 A CN202311510608 A CN 202311510608A CN 117487470 A CN117487470 A CN 117487470A
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aging
porous material
mesoporous
agent
adhesive film
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潘俊
居俊杰
孟雪
薛玉程
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Suzhou Yisheng Optical Materials Co ltd
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Suzhou Yisheng Optical Materials Co ltd
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00Adhesives in the form of films or foils
    • C09J7/30Adhesives in the form of films or foils characterised by the adhesive composition
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02Non-macromolecular additives
    • C09J11/04Non-macromolecular additives inorganic
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02Non-macromolecular additives
    • C09J11/06Non-macromolecular additives organic
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J123/00Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
    • C09J123/02Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
    • C09J123/04Homopolymers or copolymers of ethene
    • C09J123/08Copolymers of ethene
    • C09J123/0846Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
    • C09J123/0853Vinylacetate
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042PV modules or arrays of single PV cells
    • H01L31/048Encapsulation of modules
    • H01L31/0481Encapsulation of modules characterised by the composition of the encapsulation material
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2203/00Applications of adhesives in processes or use of adhesives in the form of films or foils
    • C09J2203/322Applications of adhesives in processes or use of adhesives in the form of films or foils for the production of solar panels
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00Additional features of adhesives in the form of films or foils
    • C09J2301/40Additional features of adhesives in the form of films or foils characterized by the presence of essential components
    • C09J2301/408Additional features of adhesives in the form of films or foils characterized by the presence of essential components additives as essential feature of the adhesive layer

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  • Organic Chemistry (AREA)
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  • Condensed Matter Physics & Semiconductors (AREA)
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  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
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Abstract

The invention belongs to the technical field of packaging adhesive films, and particularly relates to a long-acting anti-aging EVA adhesive film and a preparation method thereof, wherein the method comprises the following steps: step S1, preparing a mesoporous porous material; step S2, preparing a mesoporous porous material loaded with an anti-aging auxiliary agent; s3, preparing a long-acting anti-aging EVA adhesive film; according to the long-acting anti-aging EVA adhesive film and the preparation method thereof, the porosity of the porous material is effectively improved by adopting the mode of co-hydrolytic condensation and mesoporous treatment of silicate and the silane coupling agent, the loading capacity of an anti-aging auxiliary agent is improved, and meanwhile, the functional groups and polar groups on the silane coupling agent are adsorbed by the auxiliary agent, so that the overall slow-release effect is improved, in addition, the consumption speed of a corrosion inhibitor is effectively delayed due to the loading of the anti-aging auxiliary agent on the porous material, the protection aging is greatly improved, and the long-acting anti-aging problem of the EVA adhesive film is solved.

Description

Long-acting anti-aging EVA adhesive film and preparation method thereof
Technical Field
The invention belongs to the technical field of packaging adhesive films, and particularly relates to a long-acting anti-aging EVA adhesive film and a preparation method thereof.
Background
Solar energy has the characteristics of cleanliness and reproducibility, is abundant and is distributed throughout the world, and almost all other known energy sources come directly or indirectly from solar energy. The daily absorption of solar energy by the earth is about 4 x 10 15 KWh corresponds to approximately one-fourth of the total reserve of the earth's petroleum. Today with advanced technology, with continuous progress in material science, the cost performance of solar materials is continuously improved, and the utilization of solar energy can lead human beings to reach more harmonious boundaries in the aspects of environmental protection and energy utilization.
The solar cell is a device for converting solar radiation energy into electricity, is a high and new technology for developing and utilizing solar energy, and is a novel special power supply. The principle of solar power generation is to directly convert visible light of the sun into electric energy by utilizing quantum effects of semiconductors such as silicon. However, the photoelectric conversion function of the silicon wafer is degraded when the wafer is directly exposed to the atmosphere, and therefore, the battery must be packaged.
EVA is the current mainstream photovoltaic cell packaging adhesive film, and has the advantages of transparency, flexibility, good adhesion, high cost performance, good manufacturability and the like. The EVA packaging adhesive film is actually a layer of hot melt adhesive in application. When the temperature reaches a proper temperature, EVA melts and flows to be adhered with the adhesive surface. In a solar packaging battery assembly, the problem that the efficiency of a solar battery is reduced due to yellowing of an EVA adhesive film under the action of light, heat and oxygen and the reduction of transmittance is an urgent need to be solved in the current solar battery processing industry. The cause of yellowing of EVA films is affected by many factors, the two most important of which are degradation, oxidation of EVA itself and aging of EVA by ultraviolet light. The EVA packaging adhesive film can be degraded outdoors under the action of hot oxygen. Norman S.Allen et al studied thermal oxidative aging. It was found that the degradation of EVA mainly comprises two steps: firstly, acetic acid is reduced, and secondly, oxidation and main chain fracture are carried out. The degradation rate is faster in oxygen than in nitrogen. F.J.Pern et al also consider that the thermal stability of the crosslinked EVA film is 0 2 And H 2 0 in the presence ofDuring this time, a number of accelerated aging tests (AET) were performed at 46.1W/m 2 The EVA packaging adhesive (the value is measured by Golden under clear weather of 8 months in 1992) is ultraviolet radiation energy of one sun, and experiments are carried out on EVA packaging adhesive under various accelerated aging conditions, so that the EVA packaging adhesive gradually changes into yellow brown at the temperature of 85 ℃ of a blackboard in 7.5 ultraviolet days, and the change rate of yellow index is 2-3 multiplied by 10 -2 The method comprises the steps of carrying out a first treatment on the surface of the 10 ultraviolet sun, blackboard temperature 145 ℃, EVA changes into dark brown rapidly, yellow index change rate is 4.5-5.5X10 -2 The method comprises the steps of carrying out a first treatment on the surface of the EVA has no obvious color change in 1.2 ultraviolet sun, blackboard temperature 60.65 deg.C or 80.85 deg.C, and yellow index change rate 2-6.5X10 -4 . Therefore, how to effectively slow down the aging of the EVA adhesive film is a key factor for inhibiting the EVA adhesive film from generating yellowing, and is also an important technical innovation for promoting the development of the EVA adhesive film and the photovoltaic field.
Disclosure of Invention
The invention provides a long-acting anti-aging EVA adhesive film and a preparation method thereof, which are used for solving the problem that the EVA adhesive film cannot resist aging for a long time.
In order to solve the technical problems, the invention provides a preparation method of a long-acting anti-aging EVA adhesive film, which comprises the following steps: step S1, preparing a mesoporous porous material, namely firstly ultrasonically dispersing the porous material in a solution of water and alcohol for 30-60min, then adding a template agent, a pore-enlarging agent, a catalyst, silicate and a silane coupling agent, reacting for 5-8h at a rotating speed of 200-500rpm at 40-60 ℃, filtering, washing and drying, and calcining for 4-10h at 400-700 ℃ to prepare the mesoporous porous material; step S2, preparing a mesoporous porous material loaded with an anti-aging additive, adding the mesoporous porous material into an alcohol solution containing the anti-aging additive, stirring for 12-24 hours at the rotating speed of 50-200rpm, fully loading the anti-aging additive into the mesoporous porous material, and then filtering, washing, drying and standby to prepare the mesoporous porous material loaded with the anti-aging additive; step S3, preparing a long-acting anti-aging EVA adhesive film, uniformly mixing a cross-linking agent, a crosslinking assistant agent, a silane coupling agent and EVA particles, baking at 40-50 ℃ for 8-24 hours, uniformly mixing the baked particles with a mesoporous porous material loaded with an anti-aging auxiliary agent, extruding, granulating, and casting to form the adhesive film; wherein the anti-aging auxiliary agent comprises an ultraviolet absorber, an antioxidant and a light stabilizer.
In still another aspect, the invention further provides a long-acting anti-aging EVA adhesive film, which is prepared by the preparation method, wherein the adhesive film comprises a mesoporous porous material loaded with an anti-aging auxiliary agent; the anti-aging auxiliary agent comprises an ultraviolet absorber, an antioxidant and a light stabilizer; the porous material is one or the combination of two or more of zeolite, molecular sieve, quartz sand, mesoporous silica and mesoporous carbon material.
The long-acting anti-aging EVA adhesive film and the preparation method thereof have the beneficial effects that the porosity of the porous material is effectively improved by adopting the mode of co-hydrolytic condensation and mesoporous treatment of silicate and a silane coupling agent, the loading capacity of an anti-aging auxiliary agent is improved, and meanwhile, the functional groups and polar groups on the silane coupling agent are adsorbed by the auxiliary agent, so that the overall slow-release effect is improved, in addition, the loading of the anti-aging auxiliary agent on the porous material effectively delays the consumption speed of a corrosion inhibitor, the protection aging is greatly improved, and the long-acting anti-aging problem of the EVA adhesive film is solved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a zeolite SEM image of a long-acting anti-aging EVA adhesive film of the present invention;
FIG. 2 is an SEM image of a long-acting anti-aging EVA adhesive film of the present invention;
FIG. 3 is a graph of nitrogen adsorption for the long-acting anti-aging EVA adhesive film of the present invention;
FIG. 4 is a corrosion inhibitor release profile for a long-acting anti-aging EVA adhesive film of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are 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.
The invention provides a preparation method of a long-acting anti-aging EVA adhesive film, which comprises the following steps: step S1, preparing a mesoporous porous material, namely firstly ultrasonically dispersing the porous material in a solution of water and alcohol for 30-60min, then adding a template agent, a pore-enlarging agent, a catalyst, silicate and a silane coupling agent, reacting for 5-8h at a rotating speed of 200-500rpm at 40-60 ℃, filtering, washing and drying, and calcining for 4-10h at 400-700 ℃ to prepare the mesoporous porous material.
In this embodiment, specifically, the mass portion ratio of each component in step S1 is as follows:
porous material: 1-5 parts; alcohol: 70-90 parts; water: 10-30 parts of a lubricant; template agent: 0.1-1 parts; hole expanding agent: 0.01-0.3 part; catalyst: 0.01-0.1 part; silicate esters: 0.5-2 parts; silane coupling agent: 0.1-0.5 part.
In this embodiment, the porous material is one or a combination of two or more of zeolite, molecular sieve, quartz sand, mesoporous silica and mesoporous carbon material.
In this embodiment, the alcohol is specifically one or a combination of two or more of methanol, ethanol, and propanol.
In this embodiment, the mass ratio of water to alcohol is optionally 1-3:7-9.
In this embodiment, the template agent is specifically one of cetyltrimethylammonium bromide (CTAB), cetyltrimethylammonium chloride (CTAC), pyrrolidine, ethylenediamine, n-butylamine, or polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer (P123).
In this embodiment, the pore-expanding agent is specifically one or a combination of two or more of mesitylene, polymethyl methacrylate, polystyrene, and poly-t-butyl methacrylate.
In this embodiment, the catalyst is one or a combination of two or more of sodium hydroxide, ammonia water, formic acid, acetic acid, hydrochloric acid or ammonium chloride.
In this embodiment, the silicate is specifically one or a combination of two or more of tetraethyl orthosilicate, tetra (2-ethylhexyl) silicate, or isopropyl silicate.
In this embodiment, specifically, the silane coupling agent is one of KH550, KH560, KH570, KH792 and DL 602.
In this example, the washing mode is ethanol washing 3 times, and the drying mode is oven baking at 60 ℃ for 12 hours.
In the embodiment, in step S2, specifically, the mesoporous porous material loaded with the anti-aging additive is prepared, the mesoporous porous material is added into the alcohol solution containing the anti-aging additive, and stirred for 12-24 hours at the rotating speed of 50-200rpm, so that the mesoporous porous material is fully loaded with the anti-aging additive, and then the mesoporous porous material loaded with the anti-aging additive is prepared by filtering, washing, drying and standby.
As shown in fig. 1, the left side is the initial zeolite, the middle is the mesoporous zeolite, and the right side is the mesoporous zeolite loaded with the corrosion inhibitor.
In this embodiment, specifically, the mass portion ratio of each component in step S2 is as follows:
mesoporous porous material: 1-10 parts; alcohol: 100 parts; ultraviolet absorber: 5-10 parts; an antioxidant: 5-10 parts; light stabilizers: 5-10 parts.
In this embodiment, the ultraviolet absorber is specifically any one of a benzophenone ultraviolet absorber, a benzotriazole ultraviolet absorber, or a triazine ultraviolet absorber.
In this embodiment, specifically, the light stabilizer is any one of a light shielding agent-based light stabilizer, a quencher-based light stabilizer, a radical scavenger-based light stabilizer, and a hydroperoxide decomposer-based light stabilizer.
In this embodiment, the antioxidant is specifically any one of hindered phenol antioxidants, aromatic amine antioxidants, phosphite antioxidants, thioether antioxidants and metal deactivator antioxidants.
In this embodiment, the alcohol solution is one or a combination of two or more of methanol, ethanol and propanol.
In this example, the washing mode is ethanol washing 3 times, and the drying mode is oven baking at 80 ℃ for 24 hours.
In the embodiment, specifically, step S3, preparing a long-acting anti-aging EVA film, uniformly mixing a crosslinking agent, a co-crosslinking agent, a silane coupling agent and EVA particles, baking at 40-50 ℃ for 8-24 hours, uniformly mixing the baked particles with a mesoporous porous material loaded with an anti-aging auxiliary agent, extruding, granulating, and casting to form a film; wherein the anti-aging auxiliary agent comprises an ultraviolet absorber, an antioxidant and a light stabilizer.
As shown in fig. 2, the left side is an SEM image of a pure EVA film, and the right side is an SEM image of an EVA film containing mesoporous zeolite loaded with corrosion inhibitor, and a clear white dot distribution can be seen.
In this embodiment, specifically, the mass portion ratio of each component in step S3 is as follows:
EVA particles: 100 parts; mesoporous porous material loaded with anti-aging auxiliary agent: 0.5-2 parts; crosslinking agent: 1-4 parts; auxiliary crosslinking agent: 0.1-1 parts; silane coupling agent: 1-4 parts; ultraviolet absorption: 0-2 parts; an antioxidant: 0-2 parts; light stabilizers: 0-1 part.
In this embodiment, the crosslinking agent is specifically any one or more of dibenzoyl peroxide, dicumyl peroxide, tert-butyl peroxy-2-ethylhexyl carbonate, 1-di-tert-butylperoxy cyclohexane, tert-amyl peroxy-2-ethylhexyl carbonate, 1-bis (tert-butylperoxy) -3, 5-trimethylcyclohexane, bis (4-methylbenzoyl) peroxide, or tert-butyl peroxy-3, 5-trimethylhexanoate.
In this embodiment, the auxiliary crosslinking agent is specifically any one or a combination of more of ethoxylated trimethylolpropane triacrylate, glycerol triacrylate, ethoxylated pentaerythritol tetraacrylate, trimethylolpropane triacrylate, triallyl isocyanurate or triallyl cyanurate.
In this embodiment, specifically, the silane coupling agent is any one or a combination of multiple of KH550, KH560, KH570, KH792 or DL 602.
As shown in fig. 3, the larger the porosity, the larger the adsorption amount, while mesoporous can increase the porosity of zeolite, and the load of corrosion inhibitor can be filled in the pores to reduce the porosity.
As shown in fig. 4, the sustained release effect and adsorption amount of the mesoporous treated zeolite were superior to those of the untreated zeolite.
Tensile property test:
initial mechanical properties: the stretching rate was 500mm/min as tested according to GB/T1040.3-2006.
Mechanical properties after aging: PCT48h (121 ℃,0.2MPa,48 h) was used, and the tensile rate was 500mm/min as tested according to GB/T1040.3-2006.
Yellowing test:
ultraviolet aging test:
sample preparation: and (3) taking two EVA adhesive films with the size of 300mm multiplied by 150mm, sequentially laminating a front plate material, a front EVA adhesive film, a rear EVA adhesive film and a back plate material from bottom to top, putting the front plate into a vacuum laminating machine downwards, and laminating according to the temperature and time required by the product to obtain a laminated piece sample with no appearance defect. The crosslinking degree of the crosslinked EVA adhesive film is required to reach more than 60 percent. 3 laminate samples were prepared.
The testing process comprises the following steps:
1) The method comprises the steps of (1) placing a glass surface of a sample into an effective irradiation area of an ultraviolet aging test box towards a light source, wherein test conditions are as follows: a) Uv spectral distribution: the irradiation intensity between the wavelength of 280nm and 400nm is 50W/m 2 ~150W/m 2 The illumination uniformity of the surface of the test sample is within 15%. The irradiation quantity of the wave band of 280 nm-320 nm accounts for 3% -10% of the total irradiation quantity;
b) The surface temperature of the sample in the test box is kept at 60+/-5 ℃ while ultraviolet irradiation is carried out;
c) Irradiation power accumulation: the ultraviolet power is calibrated periodically by accumulating the irradiation amount actually received by the sample surface.
2) Test time: dosimeters built up with irradiation power, typically 120kWh/m 2
3) Taking out the sample after the test is finished, and recovering the sample for 2-4 hours in an open environment with the relative humidity of less than 75% at the temperature of 23+/-5 ℃;
4) The yellow index measurement was performed according to ASTM E313-2010 on each of the laminate samples before and after the test, not less than 3 points were measured on each sample, the yellow index of the sample was averaged over the measured points, and the difference in change in yellow index before and after aging was recorded.
Wet heat aging test:
1) All the samples are placed in a high-temperature high-humidity aging test box, and test conditions are set: the temperature is 85+/-2 ℃ and the relative humidity is 85+/-5%;
2) The test time is 1000 hours, after the test is finished, the sample is taken out, and the sample is recovered for 2 to 4 hours in an open environment with the relative humidity of less than 75 percent at the temperature of 23+/-5 ℃;
3) The yellow index measurement was performed according to ASTM E313-2010 on each of the laminate samples before and after the test, not less than 3 points were measured on each sample, the yellow index of the sample was averaged over the measured points, and the difference in change in yellow index before and after aging was recorded.
The microstructure and morphology of the sample in the invention are detected and observed by a Scanning Electron Microscope (SEM); the porosity of the mesoporous porous material is determined by a nitrogen adsorption experiment; the slow release effect of the loaded corrosion inhibitor is tested by testing at 200-400nm with an ultraviolet spectrophotometer.
Example 1
First, preparing a mesoporous porous material:
the zeolite is firstly dispersed in a solution of water and ethanol for 60min by ultrasonic, then CTAB, mesitylene, sodium hydroxide, tetraethyl orthosilicate and KH570 are added for reaction for 5h at 40 ℃ and 500rpm, then the zeolite is filtered, washed 3 times by ethanol and dried in a baking oven at 60 ℃, and then calcined for 8h at 400 ℃. The mass ratio of each component is as follows:
and secondly, dispersing an ultraviolet absorbent, an antioxidant and a light stabilizer in an alcohol solution, adding the mesoporous porous material obtained in the first step into the dispersion liquid, stirring for 12 hours at a rotating speed of 200rpm, fully loading an anti-aging auxiliary agent into the mesoporous porous material, filtering, washing with ethanol for 2 times, and drying at 80 ℃ for 24 hours for later use. The mass ratio of each component is as follows:
and thirdly, uniformly mixing a cross-linking agent, an auxiliary cross-linking agent, a silane coupling agent and EVA particles, baking for 24 hours at 40 ℃, uniformly mixing the baked particles with the mesoporous porous material loaded with the anti-aging auxiliary agent obtained in the second step, and preparing the adhesive film by means of extrusion, granulation and tape casting film forming, wherein the processing temperature is 60 ℃. The mass ratio of each component is as follows:
example 2
First, preparing a mesoporous porous material:
firstly, ultrasonically dispersing a molecular sieve in a solution of water and methanol for 30min, then adding CTAC, polymethyl methacrylate, ammonia water, tetra (2-ethylhexyl) silicate and DL602, reacting for 8h at a speed of 200rpm at 60 ℃, filtering, washing with ethanol for 3 times, drying in a baking oven at 60 ℃, and calcining for 4h at 700 ℃. The mass ratio of each component is as follows:
and secondly, dispersing an ultraviolet absorbent, an antioxidant and a light stabilizer in an alcohol solution, adding the mesoporous porous material obtained in the first step into the dispersion liquid, stirring for 24 hours at a rotating speed of 50rpm, fully loading an anti-aging auxiliary agent into the mesoporous porous material, filtering, washing with ethanol for 2 times, and drying at 80 ℃ for 24 hours for later use. The mass ratio of each component is as follows:
preferably, the ultraviolet absorber is a benzophenone ultraviolet absorber, a benzotriazole ultraviolet absorber or a triazine ultraviolet absorber
And thirdly, uniformly mixing a cross-linking agent, an auxiliary cross-linking agent, a silane coupling agent and EVA particles, baking at 50 ℃ for 8 hours, uniformly mixing the baked particles with the mesoporous porous material loaded with the anti-aging auxiliary agent obtained in the second step, and preparing the adhesive film by means of extrusion, granulation and tape casting film forming, wherein the processing temperature is 110 ℃. The mass ratio of each component is as follows:
example 3
First, preparing a mesoporous porous material:
firstly, quartz sand is ultrasonically dispersed in a solution of water, methanol and ethanol for 50min, then ethylenediamine, mesitylene, polystyrene, acetic acid, tetraethyl orthosilicate and KH560 are added for reaction for 7h at the rotation speed of 400rpm at 50 ℃, then the quartz sand is filtered, washed for 3 times by ethanol and dried in an oven at 60 ℃, and then calcined for 6h at 500 ℃. The mass ratio of each component is as follows:
and secondly, dispersing an ultraviolet absorbent, an antioxidant and a light stabilizer in an alcohol solution, adding the mesoporous porous material obtained in the first step into the dispersion liquid, stirring for 18 hours at a rotating speed of 100rpm, fully loading an anti-aging auxiliary agent into the mesoporous porous material, filtering, washing with ethanol for 2 times, and drying at 80 ℃ for 24 hours for later use. The mass ratio of each component is as follows:
and thirdly, uniformly mixing a cross-linking agent, an auxiliary cross-linking agent, a silane coupling agent and EVA particles, baking for 12 hours at 50 ℃, uniformly mixing the baked particles with the mesoporous porous material loaded with the anti-aging auxiliary agent obtained in the second step, and preparing a glue film by means of extrusion, granulation and tape casting film forming, wherein the processing temperature is 90 ℃. The mass ratio of each component is as follows:
example 4
First, preparing a mesoporous porous material:
firstly, performing ultrasonic dispersion on mesoporous silica in a solution of water and ethanol for 40min, then adding P123, mesitylene, acetic acid, formic acid, tetraethyl orthosilicate, isopropyl silicate and KH792, reacting for 6h at the rotating speed of 300rpm at 50 ℃, filtering, washing with ethanol for 3 times, drying in a baking oven at 60 ℃, and calcining for 7h at 600 ℃. The mass ratio of each component is as follows:
and secondly, dispersing an ultraviolet absorbent, an antioxidant and a light stabilizer in an alcohol solution, adding the mesoporous porous material obtained in the first step into the dispersion liquid, stirring for 18 hours at a rotating speed of 100rpm, fully loading an anti-aging auxiliary agent into the mesoporous porous material, filtering, washing with ethanol for 2 times, and drying at 80 ℃ for 24 hours for later use. The mass ratio of each component is as follows:
and thirdly, uniformly mixing a cross-linking agent, an auxiliary cross-linking agent, a silane coupling agent and EVA particles, baking for 12 hours at 50 ℃, uniformly mixing the baked particles with the mesoporous porous material loaded with the anti-aging auxiliary agent obtained in the second step, and preparing a glue film by means of extrusion, granulation and tape casting film forming, wherein the processing temperature is 90 ℃. The mass ratio of each component is as follows:
example 5
Firstly, dispersing zeolite and quartz sand in a solution of water and ethanol for 50min by ultrasonic, then adding CTAB, mesitylene, sodium hydroxide, tetraethyl orthosilicate and KH570, reacting for 5h at 50 ℃ and 500rpm, filtering, washing with ethanol for 3 times, drying in a baking oven at 60 ℃, and calcining for 10h at 400 ℃. The mass ratio of each component is as follows:
and secondly, dispersing an ultraviolet absorbent, an antioxidant and a light stabilizer in an alcohol solution, adding the mesoporous porous material obtained in the first step into the dispersion liquid, stirring for 22 hours at a rotating speed of 150rpm, fully loading an anti-aging auxiliary agent into the mesoporous porous material, filtering, washing with ethanol for 2 times, and drying at 80 ℃ for 24 hours for later use. The mass ratio of each component is as follows:
and thirdly, uniformly mixing a cross-linking agent, an auxiliary cross-linking agent, a silane coupling agent and EVA particles, baking for 12 hours at 50 ℃, uniformly mixing the baked particles with the mesoporous porous material loaded with the anti-aging auxiliary agent obtained in the second step, and preparing a glue film by means of extrusion, granulation and tape casting film forming, wherein the processing temperature is 90 ℃. The mass ratio of each component is as follows:
comparative example 1
The particles obtained by uniformly mixing the cross-linking agent, the auxiliary cross-linking agent, the silane coupling agent and the EVA particles in example 5 are adopted for casting and film forming.
Comparative example 2
The particles obtained by uniformly mixing the cross-linking agent, the auxiliary cross-linking agent, the silane coupling agent and the EVA particles in the embodiment 5 are blended with the anti-aging auxiliary agent, and the mixture is cast into a film. The weight portion ratio is as follows:
comparative example 3
Dispersing ultraviolet absorbent, antioxidant and light stabilizer in alcohol solution, adding zeolite in example 1 into the dispersion, stirring for 12 hr at 200rpm to fully load anti-aging auxiliary agent, filtering, washing with ethanol for 2 times, and oven drying at 80deg.C for 24 hr. The mass ratio of each component is as follows:
and thirdly, uniformly mixing a cross-linking agent, an auxiliary cross-linking agent, a silane coupling agent and EVA particles, baking for 24 hours at 40 ℃, uniformly mixing the baked particles with the aging-resistant auxiliary zeolite obtained in the second step, and preparing the adhesive film by means of extrusion, granulation and tape casting film forming, wherein the processing temperature is 60 ℃. The mass ratio of each component is as follows:
according to the embodiment and the comparative example, the yellowing of the EVA adhesive film can be effectively delayed by the slow-release method of loading the anti-aging auxiliary agent, and the mesoporous modification can more effectively improve the effect. The results of examples 4 and 5 show that the improvement effect of the additional addition of the anti-aging aid is limited, and the main reason is that the anti-aging aid is decomposed or lost at the early stage.
In summary, the long-acting anti-aging EVA adhesive film and the preparation method thereof effectively improve the porosity of the porous material by adopting the mode of co-hydrolytic condensation and mesoporous treatment of silicate and silane coupling agent, improve the loading capacity of anti-aging auxiliary agents, and simultaneously enable functional groups and polar groups on the silane coupling agent to adsorb the auxiliary agents so as to improve the overall slow-release effect.
With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.

Claims (10)

1. The preparation method of the long-acting anti-aging EVA adhesive film is characterized by comprising the following steps of:
step S1, preparing a mesoporous porous material, namely firstly ultrasonically dispersing the porous material in a solution of water and alcohol for 30-60min, then adding a template agent, a pore-enlarging agent, a catalyst, silicate and a silane coupling agent, reacting for 5-8h at a rotating speed of 200-500rpm at 40-60 ℃, filtering, washing and drying, and calcining for 4-10h at 400-700 ℃ to prepare the mesoporous porous material;
step S2, preparing a mesoporous porous material loaded with an anti-aging additive, adding the mesoporous porous material into an alcohol solution containing the anti-aging additive, stirring for 12-24 hours at the rotating speed of 50-200rpm, fully loading the anti-aging additive into the mesoporous porous material, and then filtering, washing, drying and standby to prepare the mesoporous porous material loaded with the anti-aging additive;
step S3, preparing a long-acting anti-aging EVA adhesive film, uniformly mixing a cross-linking agent, a crosslinking assistant agent, a silane coupling agent and EVA particles, baking at 40-50 ℃ for 8-24 hours, uniformly mixing the baked particles with a mesoporous porous material loaded with an anti-aging auxiliary agent, extruding, granulating, and casting to form the adhesive film; wherein the method comprises the steps of
The anti-aging auxiliary agent comprises an ultraviolet absorber, an antioxidant and a light stabilizer.
2. The method of claim 1, wherein,
the porous material is one or the combination of two or more of zeolite, molecular sieve, quartz sand, mesoporous silica and mesoporous carbon material.
3. The method of claim 1, wherein,
the alcohol is one or a combination of two or more of methanol, ethanol or propanol.
4. The method of claim 1, wherein,
the template agent is one of cetyl trimethyl ammonium bromide, cetyl trimethyl ammonium chloride, pyrrolidine, ethylenediamine, n-butylamine or polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer.
5. The method of claim 1, wherein,
the pore-expanding agent is one or a combination of two or more of mesitylene, polymethyl methacrylate, polystyrene and poly-tert-butyl methacrylate.
6. The method of claim 1, wherein,
the catalyst is one or the combination of two or more of sodium hydroxide, ammonia water, formic acid, acetic acid, hydrochloric acid or ammonium chloride.
7. The method of claim 1, wherein,
the silicate is one or the combination of two or more of tetraethyl orthosilicate, tetra (2-ethylhexyl) silicate or isopropyl silicate.
8. The method of claim 1, wherein,
the silane coupling agent is one of KH550, KH560, KH570, KH792 and DL 602.
9. The method of claim 1, wherein,
the mass part ratio of each component in the step S1 is as follows:
the mass portion ratio of each component in the step S2 is as follows:
the mass portion ratio of each component in the step S3 is as follows:
10. a long-acting anti-aging EVA film obtained by the preparation method according to any one of claims 1 to 9, characterized in that the film comprises a mesoporous porous material loaded with an anti-aging auxiliary agent;
the anti-aging auxiliary agent comprises an ultraviolet absorber, an antioxidant and a light stabilizer;
the porous material is one or the combination of two or more of zeolite, molecular sieve, quartz sand, mesoporous silica and mesoporous carbon material.
CN202311510608.4A 2023-11-14 2023-11-14 Long-acting anti-aging EVA adhesive film and preparation method thereof Pending CN117487470A (en)

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