Water-blocking repairing adhesive tape used for photovoltaic module backboard and preparation method of adhesive tape

A photovoltaic module, repair tape technology, applied in the direction of adhesives, film/sheet adhesives, coatings, etc., can solve problems such as electric leakage and fire, glass cracks, delamination, etc.

Active Publication Date: 2018-06-15
HANGZHOU FIRST APPLIED MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The vast majority of solar backsheets are fluorine-containing or non-fluoropolymer backsheets. After a period of outdoor use, these solar backsheets may appear chalking, cracking, yellowing, thinning and delamination due to wind and sand wear. and other failures, resulting in power loss or malfunction of photovoltaic modules, or even the danger of leakage and fire
In addition, there are some glass backplanes. In the use of some double-glass modules, the toughness of the glass backplane may be insufficient. When the glass is subjected to temperature changes or external shocks outdoors, cracks may appear, and serious cases may burst.
If these possible failures occur in distributed power plants, it may lead to serious consequences, because these are directly related to the life and property of operating users
However, at present, there is no effective way to deal with the possible failure of these solar backplanes, except for the replacement of photovoltaic modules, and the effective recycling of alternative solar backplanes is relatively difficult and accompanied by relatively large environmental pollution

Method used

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  • Water-blocking repairing adhesive tape used for photovoltaic module backboard and preparation method of adhesive tape
  • Water-blocking repairing adhesive tape used for photovoltaic module backboard and preparation method of adhesive tape
  • Water-blocking repairing adhesive tape used for photovoltaic module backboard and preparation method of adhesive tape

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] First prepare a 50um white polyethylene naphthalate film as the air surface base film layer and a 20um polypropylene film as the release film layer. Then prepare polybutene, N-β-(aminoethyl)-γaminopropyltrimethoxysilane modified metallocene catalyst according to the ratio of mass parts 100:5:5:10:20:5:0.1 Vinyl copolymer, terpene resin, carbon black, talc, anhydrous calcium chloride, and pentaerythritol tetrakis(3,5-di-tert-butyl-4-hydroxy)phenylpropionate, through the above-mentioned intermediate water-blocking adhesive layer The kneading preparation method produces a uniform adhesive. Then add the prepared uniform adhesive to the screw extruder, extrude at the processing temperature of the above-mentioned screw extruder, control the thickness of the extruded layer at 100um, and then bond the two sides of the base film layer and the release film, after Rolling, cooling and setting, trimming and winding.

Embodiment 2

[0030] First, prepare a 160um white polybutylene terephthalate film as the air surface base film layer and a 50 micron Guevara release paper as the release film layer. Then prepare polyisobutylene, γ-aminopropyltrimethoxysilane modified isobutylene-p-methylstyrene copolymer, rosin resin, white Carbon black, montmorillonite, anhydrous calcium sulfate, and bis(2,4-di-tert-butylphenyl)pentaerythritol diphosphite, prepared by the kneading preparation method of the intermediate water-blocking adhesive layer to obtain a uniform adhesive material. Then add the prepared uniform adhesive to the screw extruder, extrude at the above-mentioned screw extruder processing temperature, control the thickness of the extruded layer at 150um, and then bond the two sides of the base film layer and the release film, after Rolling, cooling and setting, trimming and winding.

Embodiment 3

[0032] First prepare a 250um white polyethylene terephthalate film as the base film layer of the air surface and a 36 micron Guevara release paper as the release film layer. Then prepare polyisobutylene, γ-aminopropyltrimethoxysilane modified isobutylene-p-methylstyrene copolymer, rosin resin, white Carbon black, montmorillonite, anhydrous calcium sulfate, and bis(2,4-di-tert-butylphenyl)pentaerythritol diphosphite, prepared by the kneading preparation method of the intermediate water-blocking adhesive layer to obtain a uniform adhesive material. Then add the prepared uniform adhesive to the screw extruder, extrude at the processing temperature of the above-mentioned screw extruder, control the thickness of the extruded layer at 100um, and then bond the two sides of the base film layer and the release film, after Rolling, cooling and setting, trimming and winding.

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Abstract

The invention discloses a water-blocking repairing adhesive tape used for a photovoltaic module backboard and a preparation method of the adhesive tape. The water-blocking repairing adhesive tape includes an air surface base film layer, a middle water-blocking adhesion layer and a release film layer, wherein the air surface base film layer is composed of a polyester film or a polyester film and afluorocarbon coating formed on the outer surface of the polyester film or a polyester film and a fluorocarbon coating formed on two surfaces of the polyester film, and the air surface base film layerhas the protective effects such as insulation and weather resistance; and the middle water-blocking adhesion layer is a water-blocking adhesion layer obtained by extrusion through a two-screw extruderafter mixing by using an olefin polymer as a base material, and the middle water-blocking adhesion layer has good adhesion performance and excellent water-blocking performance, wherein the water vapor transmission rate is less than 1g*m<-2>*day<-1>. The invention also discloses a preparation method of the water-blocking repairing adhesive tape. The prepared adhesive tape has excellent insulation,water resistance, weather resistance and adhesion, and is convenient for construction.

Description

technical field [0001] The invention relates to an adhesive tape and a preparation method, in particular to a repair adhesive tape for a backplane of a photovoltaic module and a preparation method thereof. Background technique [0002] With the development of the photovoltaic industry, the application of photovoltaic technology is becoming more and more diverse, popular and differentiated. From the development of large-scale ground power stations to the distributed power stations scattered all over the world, people can intuitively observe the real situation of solar panels. The photovoltaic modules used in photovoltaic power plants must have a long outdoor service life. The solar backsheet located on the back of the photovoltaic module protects and supports the cells and must have reliable electrical insulation, water resistance and weather resistance. [0003] The vast majority of solar backsheets are fluorine-containing or non-fluoropolymer backsheets. After a period of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/38C09J7/29C09J7/25C09J123/20C09J123/22C09J11/04C09J11/08C09D127/18C09D123/08
CPCC09D123/0892C09D127/18C09J11/04C09J11/08C09J123/20C09J123/22C09J2203/322C09J2301/122C09J2301/302C09J2301/408C09J2423/105C08L45/00C08K3/04C08K3/34C08L93/04C08K3/36C08K3/346C08L57/02
Inventor 詹志英林维红靳加彬周光大林建华
Owner HANGZHOU FIRST APPLIED MATERIAL CO LTD
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