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High-reflection high-barrier solar cell backboard film and preparation method thereof

A technology for solar cells and backplane films, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of easy local defects and poor consistency of solar cell backplane films, so as to achieve good overall performance consistency and not easy to local defects Effect

Pending Publication Date: 2022-02-08
NINGBO QINBANG NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above deficiencies in the prior art, the present invention provides a high-reflection and high-barrier solar cell back sheet film to solve the problems of poor overall consistency of the existing solar cell back sheet film, local defects, and its low reflectivity. , water vapor barrier, high temperature resistance, weather resistance, impact resistance and other performance problems, so as to further meet the life requirements of long-term use in harsh environments

Method used

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  • High-reflection high-barrier solar cell backboard film and preparation method thereof
  • High-reflection high-barrier solar cell backboard film and preparation method thereof
  • High-reflection high-barrier solar cell backboard film and preparation method thereof

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Embodiment 1

[0024] The high-reflection and high-barrier solar cell backsheet film of this embodiment, the backsheet film includes an intermediate PET base film and a first coating and a second coating respectively arranged on the upper surface and the lower surface of the PET base film, so The first coating layer includes Ag-MOFs material coated titanium dioxide doped fluororesin, and the doping amount of the Ag-MOFs material coated titanium dioxide accounts for 30wt% of the mass ratio of the first coating layer. Described first coating also comprises additive, bisphenol A epoxy resin, acrylic resin; The mass ratio that described additive, bisphenol A epoxy resin and acrylic resin account for the first coating is 1.5wt%, 15wt% and 8wt%. The mass ratio of the fluororesin to the first coating is 45.5wt%. The fluororesin is polytetrafluoroethylene (PTFE). The additive is an ultraviolet absorber and a perfluorocage polysilsesquioxane with a mass ratio of 1:2. The ultraviolet absorber is UV...

Embodiment 2

[0035] The high-reflection and high-barrier solar cell backsheet film of this embodiment, the backsheet film includes an intermediate PET base film and a first coating and a second coating respectively arranged on the upper surface and the lower surface of the PET base film, so The first coating includes Ag-MOFs material coated with titanium dioxide doped fluororesin, and the doping amount of the Ag-MOFs material coated with titanium dioxide accounts for 35wt% of the mass ratio of the first coating. Described first coating also comprises additive, bisphenol A epoxy resin, acrylic resin; The mass ratio that described additive, bisphenol A epoxy resin and acrylic resin account for the first coating is 2.5wt%, 10wt% and 9 wt%. The mass ratio of the fluororesin to the first coating is 43.5wt%. The fluororesin is polyvinylidene fluoride (PVDF). The additive is an ultraviolet absorber and a perfluorocage polysilsesquioxane with a mass ratio of 1:2. The ultraviolet absorber is UV-...

Embodiment 3

[0046] The high-reflection and high-barrier solar cell backsheet film of this embodiment, the backsheet film includes an intermediate PET base film and a first coating and a second coating respectively arranged on the upper surface and the lower surface of the PET base film, so The first coating includes Ag-MOFs material coated with titanium dioxide doped fluororesin, and the doping amount of the Ag-MOFs material coated with titanium dioxide accounts for 40wt% of the mass ratio of the first coating. Described first coating also comprises additive, bisphenol A epoxy resin, acrylic resin; The mass ratio that described additive, bisphenol A epoxy resin and acrylic resin account for the first coating is 3.5wt%, 5wt% and 8wt%. The mass ratio of the fluororesin to the first coating is 43.5wt%. The fluororesin is polytetrafluoroethylene (PTFE). The additive is an ultraviolet absorber and a perfluorocage polysilsesquioxane with a mass ratio of 1:2. The ultraviolet absorber is UV-32...

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Abstract

The invention discloses a high-reflection high-barrier solar cell backboard film which comprises a middle PET base film, a first coating and a second coating, wherein the first coating and the second coating are arranged on the upper surface and the lower surface of the PET base film respectively, the first coating comprises fluorine resin doped with Ag-MOFs material coated titanium dioxide, and the doping amount of the Ag-MOFs material coated titanium dioxide accounts for 30-40wt% of the mass of the first coating layer. The high-reflection and high-barrier solar cell backboard film is good in overall performance consistency and not prone to local defects, the film layer of the high-reflection and high-barrier solar cell backboard film not only has high reflectivity and high water vapor barrier performance, but also has excellent performance of high temperature, weather resistance, wear resistance, impact resistance and the like, and the service life requirement for long-term use in severe environments is met.

Description

technical field [0001] The invention relates to the technical field of photovoltaics, in particular to a high-reflection and high-barrier solar battery backplane film and a preparation method thereof. Background technique [0002] Backsheet is a photovoltaic encapsulation material used on the back of solar modules and directly in contact with the external environment on a large area. It is usually required to have excellent long-term aging resistance (humid heat, dry heat, ultraviolet), electrical insulation resistance, water vapor barrier, etc. performance. The solar photovoltaic backsheet is located on the back of the solar panel, which protects and supports the battery. There are many types of photovoltaic backsheets, and there are two most commonly used ones, which are divided into coating type and composite type according to the manufacturing process; Fluorine-containing materials are divided into three types: double-sided fluorine-containing backsheets, single-sided f...

Claims

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Application Information

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IPC IPC(8): H01L31/049C09D127/18C09D7/61C09D7/65C08G83/00
CPCH01L31/049C09D127/18C09D7/61C09D7/65C08G83/008C08K2003/2241C08K2201/011C08L2203/20C08L63/00C08L51/08C08K3/22Y02E10/50
Inventor 刘勤学颜子富周旭
Owner NINGBO QINBANG NEW MATERIAL TECH CO LTD
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