CN114395223A - Hydrolysis-resistant, high-weather-resistance and high-strength glass fiber reinforced PP/PET material for photovoltaic back plate and preparation method thereof - Google Patents
Hydrolysis-resistant, high-weather-resistance and high-strength glass fiber reinforced PP/PET material for photovoltaic back plate and preparation method thereof Download PDFInfo
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- CN114395223A CN114395223A CN202111622267.0A CN202111622267A CN114395223A CN 114395223 A CN114395223 A CN 114395223A CN 202111622267 A CN202111622267 A CN 202111622267A CN 114395223 A CN114395223 A CN 114395223A
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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
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/06—Reinforcing macromolecular compounds with loose or coherent fibrous material using pretreated fibrous materials
- C08J5/08—Reinforcing macromolecular compounds with loose or coherent fibrous material using pretreated fibrous materials glass fibres
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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
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
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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
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/13—Phenols; Phenolates
- C08K5/134—Phenols containing ester groups
- C08K5/1345—Carboxylic esters of phenolcarboxylic acids
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
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- C08K5/29—Compounds containing one or more carbon-to-nitrogen double bonds
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3412—Heterocyclic compounds having nitrogen in the ring having one nitrogen atom in the ring
- C08K5/3432—Six-membered rings
- C08K5/3435—Piperidines
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
- C08K5/37—Thiols
- C08K5/372—Sulfides, e.g. R-(S)x-R'
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
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Abstract
The invention provides a hydrolysis-resistant, high-weather-resistant and high-strength glass fiber reinforced PP/PET material for a photovoltaic back plate and a preparation method thereof, wherein the hydrolysis-resistant, high-weather-resistant and high-strength glass fiber reinforced PP/PET material comprises the following components in percentage by mass: 20-60% of polyester PET, 20-55% of polypropylene, 10-30% of glass fiber, 0-8% of compatilizer, 3-6% of hydrolysis resistant agent, 0.2-1% of light stabilizer and 0.2-1% of antioxidant. By introducing the PP non-polar polyolefin and the glass fiber material, the high-efficiency water vapor barrier property and the electrical insulation property of the material are ensured, and meanwhile, the glass fiber provides the material with good mechanical property and thermal stability; the carbodiimide hydrolysis-resistant agent is added, so that the hydrolysis of PET in a high-humidity environment is effectively slowed down, and the requirements of hydrolysis resistance and high strength of the material are met; the obtained sample has more excellent weather resistance by selecting the high-efficiency and low-emission hindered phenol and thioether composite antioxidant and the compatilizer; the PP/PET material disclosed by the invention has the characteristics of high weather resistance, excellent hydrolysis resistance and high strength, meets the use requirements of the photovoltaic back plate, and provides more feasibility for the selection of the photovoltaic back plate material.
Description
Technical Field
The invention relates to the field of modification of high polymer materials, and particularly relates to a hydrolysis-resistant, high-weather-resistant and high-strength glass fiber reinforced PP/PET material for a photovoltaic back plate and a preparation method thereof.
Background
With the development and progress of science and technology, the demand of human beings for energy is also rapidly increased, solar energy is widely concerned and researched as a renewable clean energy source, and the research and development on solar cells and power generation components thereof are also concerned by more and more people. The solar cell module is formed by connecting solar cells in series and in parallel, and then assembling and protecting the solar cell module by using toughened glass, a packaging adhesive film and a back plate. The back plate is located on the outermost layer of the back face of the solar cell module and plays a role in protecting and supporting the cell. In order to maintain the best working condition and the best service life of the solar cell, the back sheet should have reliable electrical insulation, water vapor barrier property and good aging resistance, wherein the excellent water vapor barrier property and hydrolysis resistance are important indexes for measuring the performance of the back sheet.
At present, polyethylene terephthalate (PET) back plates become mainstream back plates in the market at present due to the advantages of high strength, good weather resistance, strong thermal stability and the like. However, PET also has the disadvantages of high water vapor transmission rate and poor hydrolysis resistance and humidity resistance. With the development of solar cell back panels and the requirements of different application scenes, the requirements on the water vapor permeability and hydrolysis resistance of the back panels become higher and higher, and how to develop a back panel core material which can meet the basic mechanical property requirements of the back panels and has high water vapor barrier property and hydrolysis resistance is more and more concerned.
Disclosure of Invention
The invention aims to provide a hydrolysis-resistant, high-weather-resistant and high-strength glass fiber reinforced PP/PET material for a photovoltaic back plate and a preparation method thereof.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the hydrolysis-resistant, high-weather-resistance and high-strength glass fiber reinforced PP/PET material for the photovoltaic back plate is prepared from the following raw materials in percentage by mass:
the viscosity of the PET resin is 0.5-1.5 dL/g.
The melt index of the polypropylene resin is 10-15g/10 min.
The glass fiber is alkali-free chopped glass fiber treated by a silane coupling agent, the chopped length is 3-4.5 mm, and the diameter is 8-14 um.
The compatilizer is one of maleic anhydride grafted polypropylene, ethylene-vinyl acetate grafted maleic anhydride or ethylene copolymer grafted maleic anhydride.
The hydrolysis resistant agent is carbodiimide.
The light stabilizer is one of a light absorber and a light shielding agent.
The preparation method of the hydrolysis-resistant, high-weather-resistance and high-strength glass fiber reinforced PP/PET material for the photovoltaic back plate comprises the following steps:
(1) weighing PET, PP, a compatilizer, an anti-hydrolysis agent, a light stabilizer and an antioxidant in proportion, putting the weighed materials into a high-speed mixer, stirring the materials for 10 to 30 minutes at normal temperature, and putting the materials into the high-speed mixer.
(2) Adding the material mixed in the step (1) into a main feeding port of a double-screw extruder, adding the glass fiber weighed according to the weight ratio into a side feeding port of the double-screw extruder, fully plasticizing and mixing at 200-240 ℃, extruding, cooling and granulating to obtain the hydrolysis-resistant, high-weather-resistant and high-strength glass fiber reinforced PP/PET material for the photovoltaic back panel.
Compared with the prior art, the invention has the following beneficial effects:
(1) the PP nonpolar polyolefin and the glass fiber material are adopted, so that the high-efficiency water vapor barrier property and the electrical insulating property of the material are ensured, and meanwhile, the glass fiber provides good mechanical property and thermal stability for the material;
(2) the PET/PP blending resin provided by the invention adopts a high-efficiency carbodiimide hydrolysis-resistant agent, and reacts with carboxylic acid generated by ester group hydrolysis in a PET structure to generate ureide derivatives, so that carboxyl is eliminated, hydrolysis spread is prevented, the effect of chain scission and reconnection is achieved, PET hydrolysis in a high-humidity environment is effectively slowed down, and the requirements of hydrolysis resistance and high strength of materials are met;
(3) the invention selects the high-efficiency light stabilizer, selectively absorbs ultraviolet rays, converts harmful light energy into harmless light energy in an energy transfer mode, releases the harmless light energy in the form of heat, and prevents oxidation reaction to play a role in delaying aging.
(4) The invention selects the high-efficiency hindered phenol and thioether composite antioxidant to ensure that the obtained sample has more excellent weather resistance.
Detailed Description
The technical solutions of the present invention will be further described below by way of examples, but the present invention should not be limited to the contents specifically described in the following experimental examples without departing from the gist of the present invention.
The raw materials used in the embodiment of the invention are as follows:
the viscosity of the PET is 0.5-1.5 dL/g, Dupont USA
PP melt index is 10-15g/10min, medium petrochemical
Chopped glass fiber with length of 4mm and diameter of 14um, China boulder International Ltd
Compatibilizer maleic anhydride grafted Polypropylene-H501, Huawen, Inc
Hydrolysis resistance agent carbodiimide rhinestone chemistry
Light stabilizer light absorber UV770, DuPont, USA
Antioxidant hindered phenol 1010/thioethers 1035 is calculated as 1: 2, and the hindered phenol 1010/thioether DSTP is mixed according to the proportion of 1: 2, mixing and using the mixture according to the proportion of 2, and self-making.
The product performance testing method comprises the following steps:
tensile strength: the drawing speed was 5mm/min according to ISO 527.
Bending strength: the test speed is 2mm/min according to ISO 178.
Notched impact strength: a4 mm thick specimen was selected according to ISO 179.
Heat distortion temperature: according to ISO 75 method, 1.8MPa, 120 ℃.
And (3) illumination test: the gray scale is more than or equal to 4 in 5 periods of test according to the method of SAEJ 2527.
And (3) wet heat aging test: the tensile strength of the double 85 damp heat aged 1000h test was evaluated.
Thermal oxygen resistance test: standard tensile bars and notched impact bars were prepared, subjected to an aging test in accordance with DIN 53497, placed in an oven at 150 ℃ for 1000 hours, and tested for tensile strength and notched impact strength after the test was completed.
Examples 1 to 4
Weighing PET resin, PP resin, glass fiber 305K, a compatilizer H501, an anti-hydrolysis agent carbodiimide, a light stabilizer UV770 and a self-made 1010/1035 composite antioxidant according to the weight percentages of the embodiments 1-4 in the table 1.
The preparation method comprises the following steps:
weighing PET, PP, a compatilizer, an anti-hydrolysis agent, a light stabilizer and an antioxidant in proportion, putting the weighed materials into a high-speed mixer, stirring the materials for 10 to 30 minutes at normal temperature, and putting the materials into the high-speed mixer.
(2) Adding the material mixed in the step (1) into a main feeding port of a double-screw extruder, adding the glass fiber weighed according to the weight ratio into a side feeding port of the double-screw extruder, fully plasticizing and mixing at 200-240 ℃, extruding, cooling and granulating to obtain the hydrolysis-resistant, high-weather-resistant and high-strength glass fiber reinforced PP/PET material for the photovoltaic back panel.
Comparative example 1
Weighing PET resin, PP resin, glass fiber 305K, compatilizer H501, light stabilizer UV770 and self-made 1010/1035 composite antioxidant according to the weight percentage of the examples in the table 1.
The preparation method comprises the following steps:
(1) weighing PET, PP resin, glass fiber 305K, a compatilizer, a light stabilizer and an antioxidant according to the weight ratio, putting the mixture into a high-speed mixer, and stirring the mixture for 10 to 30 minutes at normal temperature.
(2) Adding the material mixed in the step (1) into a main feeding port of a double-screw extruder, adding the glass fiber weighed according to the weight ratio into a side feeding port of the double-screw extruder, fully plasticizing and mixing at 200-240 ℃, extruding, cooling and granulating to obtain the hydrolysis-resistant, high-weather-resistant and high-strength glass fiber reinforced PP/PET material for the photovoltaic back panel. Standard test specimens were prepared using an injection molding machine and the test results are shown in Table 1.
Comparative example 2 is a PET 608S material from Shanghai Yuannan industries, Inc. and the results are shown in Table 1.
Table 1: results of Performance testing
As can be seen from table 1, the tensile and flexural mechanical properties, photo-thermal stability, etc. of comparative examples 1 and 2 are significantly lower than those of example 2; the tensile strength retention rate after humid heat aging is lower than that of the samples in examples 2 and 3, which shows that the carbodiimide effectively slows down the hydrolysis of PET in a high-humidity environment, and meets the requirements of hydrolysis resistance and high strength of the material; the heat distortion temperature and the tensile strength of the example 3 are higher than those of the example 1, which shows that the glass fiber filler endows the material with excellent mechanical property and thermal stability, and simultaneously, the humid heat aging effect and the light aging effect are also higher than those of the examples 4 and 2, which shows that the UV770 light stabilizer and the hindered phenol and thioether composite antioxidant can effectively delay the light aging and heat aging effects of the material and meet the requirement of high weather resistance of the material.
According to the invention, the carbodiimide hydrolysis resistant agent ensures the high-efficiency water vapor barrier property and the electrical insulation property of the material, the hydrolysis of PET in a high-humidity environment is effectively slowed down, and the obtained sample has more excellent weather resistance by selecting the high-efficiency hindered phenol and thioether composite antioxidant and the light stabilizer; therefore, the PP/PET material with high weather resistance, hydrolysis resistance and high strength is prepared, and more feasibility is provided for the selection of the photovoltaic back plate material.
Claims (8)
1. The utility model provides a photovoltaic backplate is with glass fine reinforcing PP/PET material of hydrolysis-resistant, high resistant time, high strength which characterized in that: the material is prepared from the following raw materials in percentage by mass:
2. the hydrolysis-resistant, high-weather-resistant and high-strength glass fiber reinforced PP/PET material for the photovoltaic back plate as claimed in claim 1, wherein: the viscosity of the PET resin is 0.5-1.5 dL/g.
3. The hydrolysis-resistant, high-weather-resistant and high-strength glass fiber reinforced PP/PET material for the photovoltaic back plate as claimed in claim 1, wherein: the melt index of the polypropylene resin is 10-15g/10 min.
4. The hydrolysis-resistant, high-weather-resistant and high-strength glass fiber reinforced PP/PET material for the photovoltaic back plate as claimed in claim 1, wherein: the glass fiber is alkali-free chopped glass fiber treated by a silane coupling agent, the chopped length is 3-4.5 mm, and the diameter is 8-14 um.
5. The hydrolysis-resistant, high-weather-resistant and high-strength glass fiber reinforced PP/PET material for the photovoltaic back plate as claimed in claim 1, wherein: the compatilizer is one of maleic anhydride grafted polypropylene, ethylene-vinyl acetate grafted maleic anhydride or ethylene copolymer grafted maleic anhydride.
6. The hydrolysis-resistant, high-weather-resistant and high-strength glass fiber reinforced PP/PET material for the photovoltaic back plate as claimed in claim 1, wherein: the hydrolysis resistant agent is carbodiimide.
7. The hydrolysis-resistant, high-weather-resistant and high-strength glass fiber reinforced PP/PET material for the photovoltaic back plate as claimed in claim 1, wherein: the light stabilizer is one of a light absorber and a light shielding agent.
8. The preparation method of the hydrolysis-resistant, high-weather-resistant and high-strength glass fiber reinforced PP/PET material for the photovoltaic back plate as claimed in any one of claims 1 to 7 is characterized by comprising the following steps:
(1) weighing PET, PP, a compatilizer, an anti-hydrolysis agent, a light stabilizer and an antioxidant in proportion, putting the weighed materials into a high-speed mixer, stirring the materials for 10 to 30 minutes at normal temperature, and putting the materials into the high-speed mixer;
(2) adding the material mixed in the step (1) into a main feeding port of a double-screw extruder, adding the glass fiber weighed according to the weight ratio into a side feeding port of the double-screw extruder, fully plasticizing and mixing at 200-240 ℃, extruding, cooling and granulating to obtain the hydrolysis-resistant, high-weather-resistant and high-strength glass fiber reinforced PP/PET material for the photovoltaic back panel.
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| CN202111622267.0A CN114395223A (en) | 2021-12-28 | 2021-12-28 | Hydrolysis-resistant, high-weather-resistance and high-strength glass fiber reinforced PP/PET material for photovoltaic back plate and preparation method thereof |
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| CN202111622267.0A CN114395223A (en) | 2021-12-28 | 2021-12-28 | Hydrolysis-resistant, high-weather-resistance and high-strength glass fiber reinforced PP/PET material for photovoltaic back plate and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115304896A (en) * | 2022-10-11 | 2022-11-08 | 苏州易昇光学材料股份有限公司 | Novel PET (polyethylene terephthalate) film for photovoltaic back plate and preparation method of PET film |
| CN115418084A (en) * | 2022-09-22 | 2022-12-02 | 苏州易昇光学材料股份有限公司 | Anti-ultraviolet PET (polyethylene terephthalate) film for photovoltaic back plate and preparation method thereof |
| CN115536995A (en) * | 2022-10-11 | 2022-12-30 | 苏州易昇光学材料股份有限公司 | PET (polyethylene terephthalate) film for photovoltaic back plate and preparation method of PET film |
| CN115785627A (en) * | 2022-11-30 | 2023-03-14 | 江苏金发科技新材料有限公司 | Hydrolysis-resistant polyester resin composite material and preparation method and application thereof |
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| CN102702699A (en) * | 2012-07-06 | 2012-10-03 | 上海日之升新技术发展有限公司 | Glass-fiber-reinforced hydrolysis-resistant polyester material and preparation method thereof |
| CN107731949A (en) * | 2016-08-10 | 2018-02-23 | 阿特斯(中国)投资有限公司 | A kind of photovoltaic backboard and preparation method thereof |
| CN109721958A (en) * | 2017-10-27 | 2019-05-07 | 中国石油化工股份有限公司 | A kind of high performance PE T engineering plastics and preparation method thereof |
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2021
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102344654A (en) * | 2011-06-17 | 2012-02-08 | 深圳市科聚新材料有限公司 | Hydrolysis resistant PET composite material and preparation method thereof |
| CN102702699A (en) * | 2012-07-06 | 2012-10-03 | 上海日之升新技术发展有限公司 | Glass-fiber-reinforced hydrolysis-resistant polyester material and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115418084A (en) * | 2022-09-22 | 2022-12-02 | 苏州易昇光学材料股份有限公司 | Anti-ultraviolet PET (polyethylene terephthalate) film for photovoltaic back plate and preparation method thereof |
| CN115418084B (en) * | 2022-09-22 | 2024-04-26 | 苏州易昇光学材料股份有限公司 | Anti-ultraviolet PET film for photovoltaic backboard and preparation method thereof |
| CN115304896A (en) * | 2022-10-11 | 2022-11-08 | 苏州易昇光学材料股份有限公司 | Novel PET (polyethylene terephthalate) film for photovoltaic back plate and preparation method of PET film |
| CN115536995A (en) * | 2022-10-11 | 2022-12-30 | 苏州易昇光学材料股份有限公司 | PET (polyethylene terephthalate) film for photovoltaic back plate and preparation method of PET film |
| CN115785627A (en) * | 2022-11-30 | 2023-03-14 | 江苏金发科技新材料有限公司 | Hydrolysis-resistant polyester resin composite material and preparation method and application thereof |
| CN115785627B (en) * | 2022-11-30 | 2024-05-14 | 江苏金发科技新材料有限公司 | Hydrolysis-resistant polyester resin composite material and preparation method and application thereof |
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