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Surface treatment method of fiber-based photovoltaic backboard and aging-resistant chemical fiber-based photovoltaic backboard

A photovoltaic backplane and surface treatment technology, which is used in special surfaces, photovoltaic power generation, pretreated surfaces, etc., to achieve the effect of facilitating curing and molding, improving composite functions, and improving adhesion performance.

Pending Publication Date: 2022-05-13
SUNMAN (ZHENJIANG) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, unlike traditional photovoltaic backsheets (usually PET backsheets) that are easy to curl and coat, fiber-based photovoltaic backsheets have high rigid structural strength, so they cannot directly refer to the coating technology of existing photovoltaic backsheets. As a result, it is difficult to further improve the composite function of the fiber-based photovoltaic backsheet

Method used

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  • Surface treatment method of fiber-based photovoltaic backboard and aging-resistant chemical fiber-based photovoltaic backboard
  • Surface treatment method of fiber-based photovoltaic backboard and aging-resistant chemical fiber-based photovoltaic backboard
  • Surface treatment method of fiber-based photovoltaic backboard and aging-resistant chemical fiber-based photovoltaic backboard

Examples

Experimental program
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Effect test

Embodiment 1

[0038] Example 1: An aging-resistant fiber-based photovoltaic backplane, using the encapsulation material provided by CN201610685240.9 as a photovoltaic backplane matrix based on composite molding of fiber materials, with a thickness of 3mm; through a corona machine (working power set at 6KW) to the photovoltaic Corona treatment is carried out on one surface of the backplane substrate, and the dyne value of the corona-treated photovoltaic backplane substrate on this surface reaches 52 dyn / cm after detection by a dyne pen; Coating liquid fluorine-containing coatings, wherein the weight ratio of fluorocarbon resin, curing agent, and organic solvent in the liquid fluorine-containing coatings is 22:1:8; the coated photovoltaic backplane substrate is coated in a tunnel furnace Implement a pre-curing step (pre-curing temperature is 165°C, pre-curing time is 2.5 minutes), and then transfer to a drying room for a complete curing step (curing temperature is 55°C, curing time is 50 hours...

Embodiment 2

[0039] Embodiment 2: the remaining technical solutions of this embodiment 2 are the same as those of embodiment 1, the difference is that in this embodiment 2, the liquid fluorine-containing paint in embodiment 1 is replaced by a liquid black paint, wherein the acrylic acid in the liquid black paint The weight ratio between resin, curing agent, carbon black and organic solvent is 22:1:10:6. The black protective coating is grid-like. After testing, the thickness of the black protective coating is 15 microns; of course The thermosetting resin in the liquid black paint can also be fluorocarbon resin or other known thermosetting resins, which are not specifically and uniquely limited in this embodiment.

Embodiment 3

[0040] Embodiment 3: the remaining technical solutions of this embodiment 3 are the same as those of embodiment 1, the difference is that please refer to figure 2 As shown, on the basis of the aging-resistant fiber-based photovoltaic backsheet obtained in Example 1, corona treatment is carried out on the other side by a corona machine (working power is set at 5KW), and it is detected by a dyne pen to confirm that after corona treatment The dyne value of the photovoltaic backplane substrate on the surface reaches 50dyn / cm; the liquid black paint is coated on the surface by a screen printing machine, wherein the liquid black paint contains acrylic resin, curing agent, black organic dye, organic solvent The proportion by weight between them is 20:1:1:20; in the tunnel furnace, implement the pre-curing step (the pre-curing temperature is 170 ° C, and the pre-curing time is 1.5 minutes) to the photovoltaic backplane substrate that has been coated, and then Transfer to a drying roo...

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Abstract

The invention discloses a surface treatment method of a fiber-based photovoltaic backboard and an aging-resistant chemical fiber-based photovoltaic backboard, the surface treatment method comprises a photovoltaic backboard matrix compositely molded based on a fiber material, and the surface treatment method comprises the following operation steps: S10) pretreating at least one surface of the photovoltaic backboard matrix to improve the dyne value of the photovoltaic backboard matrix on the surface; s20) coating a protective coating on the surface of the pretreated photovoltaic backboard substrate through a coating process; and S30) curing the protective paint through a curing process to obtain a protective coating formed on the surface of the photovoltaic backboard substrate, thereby obtaining the fiber-based photovoltaic backboard. According to the method, the surface pretreatment and protective paint coating processes are combined and applied, the curing forming effect of the protective paint on the surface of the photovoltaic backboard base body compositely formed based on the fiber material is obviously enhanced, and finally the composite function improvement effect of the fiber-based photovoltaic backboard is achieved.

Description

technical field [0001] The invention relates to the technical field of photovoltaic encapsulation, in particular to a surface treatment method for a fiber-based photovoltaic backplane, and the invention also relates to an aging-resistant fiber-based photovoltaic backplane applying the pretreatment method. Background technique [0002] Photovoltaic backsheets used for the backside packaging of photovoltaic modules usually need to have good barrier water vapor permeability, aging resistance and mechanical strength at the same time. For this reason, the applicant first proposed a fiber-based photovoltaic backsheet. In order to improve the fiber-based photovoltaic backsheet To further improve aging resistance or other properties, people usually hope to further provide a functional coating with excellent aging resistance effect on the fiber-based photovoltaic backsheet. However, unlike traditional photovoltaic backsheets (usually PET backsheets) that are easy to curl and coat, fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/24B05D5/00B05D3/00B05D3/02B05D3/08B05D3/14H01L31/049
CPCB05D7/24B05D5/00B05D3/002B05D3/08B05D3/14B05D3/0272B05D3/0209H01L31/049Y02E10/50
Inventor 徐征阳王伟力练成荣施正荣
Owner SUNMAN (ZHENJIANG) CO LTD
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