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High and low temperature resistant long-life solar photovoltaic backboard and preparation process thereof

A technology of solar photovoltaic and high and low temperature resistance, applied in the field of solar photovoltaic, can solve problems such as unfavorable high and low temperature resistance of solar photovoltaic backplanes, unfavorable production and processing, and environmental impact

Active Publication Date: 2021-05-18
浙江中聚材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The initial solar backsheet has a three-layer structure, the outer protective layer PVDF has good environmental erosion resistance, the middle layer is PET polyester film with good insulation performance, and the inner layer PVDF and EVA have good bonding performance, but PVDF material The protective layer has a certain impact on the environment
Patent application number 201922045249.5 discloses a high and low temperature resistant long-life solar photovoltaic backsheet, the backsheet includes a PET substrate layer, a heat dissipation film is bonded to the surface of the PET substrate layer, and the bottom of the PET substrate layer is connected to There is a metal plate, and the surface of the metal plate is bonded with a waterproof layer. The waterproof layer includes a hydrophobic film a, a breathable film and a hydrophobic film b. The solar photovoltaic backplane in this technical solution is connected by multiple layered structures, which is not conducive to solar Photovoltaic backsheets have been used in an outdoor harsh environment for a long time, and cracks are prone to occur between layers, which is not conducive to the high and low temperature resistance of solar photovoltaic backsheets. Moreover, the manufacturing process of this solar photovoltaic backsheet is complicated, which is not conducive to production and processing.

Method used

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  • High and low temperature resistant long-life solar photovoltaic backboard and preparation process thereof
  • High and low temperature resistant long-life solar photovoltaic backboard and preparation process thereof

Examples

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Embodiment 1

[0048] In order to solve the above technical problems, the first aspect of this embodiment provides a high and low temperature resistant long-life solar photovoltaic backsheet, which at least includes an outer layer and an inner layer connected to the outer layer from top to bottom, and the outer layer The raw materials for preparation of the inner layer, in parts by weight, include 60 parts of the first polyolefin and 5 parts of water-insoluble solid inorganic matter, and the raw materials for the preparation of the inner layer, in parts by weight, include 60 parts of the second polyolefin, 1 part of Sericite and 0.1 part of silane coupling agent, the silane coupling agent is γ-methacryloxypropyltrimethoxysilane, purchased from Dow Corning, product number: KH570.

[0049] The first polyolefin is a mixture of linear low density polyethylene A with a melt index of 1.5-2.5g / 10min, linear low density polyethylene B with a melt index of 21g / 10min, and polypropylene D with a melt in...

Embodiment 2

[0061] In order to solve the above technical problems, the first aspect of this embodiment provides a high and low temperature resistant long-life solar photovoltaic backsheet, which at least includes an outer layer and an inner layer connected to the outer layer from top to bottom, and the outer layer The raw materials for preparing the inner layer include 80 parts by weight of the first polyolefin and 10 parts of water-insoluble solid inorganic matter, and the raw materials for the preparation of the inner layer include 80 parts by weight of the second polyolefin, 3 parts Sericite and 0.3 parts of silane coupling agent, the silane coupling agent is γ-methacryloxypropyltrimethoxysilane, purchased from Dow Corning, product number: KH570.

[0062] The first polyolefin is a mixture of linear low density polyethylene A with a melt index of 1.5-2.5g / 10min, linear low density polyethylene B with a melt index of 21g / 10min, and polypropylene D with a melt index of 16g / 10min, The mass...

Embodiment 3

[0073] The difference between this embodiment and Example 2 is that the first polyolefin in this embodiment is a mixture of low-density polyethylene A, low-density polyethylene B and polypropylene D with a melt index of 16g / 10min. The mass ratio between polyethylene A, low-density polyethylene B and polypropylene D is 1:1:8, the melt index of the low-density polyethylene A is 2.1g / 10min, and the melt index refers to the temperature at 190°C , 2.16kg, obtained by ASTM D-1238 test method, purchased from Shanghai Tangjiu Industrial Co., Ltd., CAS No.: 9002-88-4. The melt index of the low-density polyethylene B is 20g / 10min. The melt index refers to the temperature at 190°C and 2.16kg, obtained by ASTM D-1238 test method, purchased from Shanghai Kaishun Plastic Chemical Co., Ltd., article number: MG200024 ,, the polypropylene D is purchased from Wuxi Xinjiawang Plastic Technology Co., Ltd., the article number is: 6231, the second olefin in this embodiment is a mixture of low densi...

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Abstract

A high and low temperature resistant long-life solar photovoltaic backboard at least comprises an outer layer and an inner layer connected with the outer layer from top to bottom, wherein the preparation raw materials of the outer layer at least comprise, by weight, 20-80 parts of first polyolefin and 1-10 parts of water-insoluble solid inorganic matter, and the preparation raw materials of the inner layer at least comprise, by weight, 20-80 parts of second polyolefin; the outer layer and the inner layer are integrally formed through a co-extrusion technology and fusion, so that the overall firmness and stability of the solar photovoltaic back plate are improved, the solar photovoltaic back plate does not have the risks of cracking and delaminating even if the solar photovoltaic back plate is in an external cracking environment for a long time, and the service life of the solar photovoltaic back plate is prolonged. With the polyolefins as a main raw material, so that the environmental protection property of the solar photovoltaic backboard is improved, and the production concept of green development is compounded. By adding the solid inorganic matter in the outer layer of the solar photovoltaic backboard, the high and low temperature resistance and wear resistance of the solar photovoltaic backboard are improved, and the service life of the solar photovoltaic backboard is prolonged.

Description

technical field [0001] The invention belongs to the technical field of solar photovoltaics, and in particular relates to a high-low temperature resistant and long-life solar photovoltaic backplane and a preparation process thereof. Background technique [0002] With the development of science and technology, people pay more attention to the development and utilization of solar energy. As the most important form of utilization of solar energy, solar photovoltaic cells have also developed rapidly in recent years. The solar backsheet is located on the back of the solar panel, which protects and supports the solar panels. [0003] The initial solar backsheet has a three-layer structure, the outer protective layer PVDF has good environmental erosion resistance, the middle layer is PET polyester film with good insulation performance, and the inner layer PVDF and EVA have good bonding performance, but PVDF material The protective layer has a certain impact on the environment. Pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/08C08L23/06C08K7/00C08K3/34C08K3/22C08K3/36C08K9/06C08K5/5425B32B27/32B32B27/06H01L31/048H01L31/049H01L31/18
CPCC08L23/12B32B27/32B32B27/08H01L31/0481H01L31/049H01L31/18C08L2205/03C08L2205/025C08L2201/08C08K2003/221C08K2201/011C08L23/0815C08K7/00C08K3/34C08K3/22C08K3/36C08K9/06C08L23/06C08K5/5425Y02E10/50Y02P70/50
Inventor 蔡书义焦华
Owner 浙江中聚材料有限公司
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