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Polyolefin packaging film used for solar cell modules

A solar cell and polyolefin technology, applied in the direction of film/sheet without carrier, graft polymer adhesive, adhesive type, etc., can solve the problems of yellowing, photovoltaic module output power drop, etc., to prevent discoloration Effects of yellowing aging, reduction of residual monomer content, and improvement of long-lasting adhesive performance

Inactive Publication Date: 2019-01-22
CHANGZHOU SVECK PHOTOVOLTAIC NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, under the action of long-term solar radiation, EVA will decompose and release acetic acid to corrode the battery sheet; after aging, it will show significant yellowing, resulting in a decrease in the output power of photovoltaic modules

Method used

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  • Polyolefin packaging film used for solar cell modules
  • Polyolefin packaging film used for solar cell modules
  • Polyolefin packaging film used for solar cell modules

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A method for preparing a polyolefin encapsulation film for solar cell modules,

[0021] (1) 91 parts of modified polyolefin resin, 0.5 parts of crosslinking agent, 0.8 parts of silane coupling agent, 0.12 parts of antioxidant, 0.12 parts of ultraviolet light absorber, 0.2 parts of light stabilizer, 0.02 parts of dispersant, initiator Add 0.01 parts of the agent into the stirring device, mix evenly, and then add it to the single-screw extruder for reaction extrusion. The extrusion temperature of the screw extruder is controlled at 80°C, and the screw speed is 20rpm, and then through extrusion, casting, Cooling to form a film, the modified polyolefin resin is an unsaturated polyolefin containing double bonds, wherein the double bonds account for 18% of the total weight of the unsaturated polyolefin; wherein, the initiator is selected from cumene hydroperoxide; the crosslinking agent Including the main cross-linking agent and cross-linking auxiliary agent, the cross-linkin...

Embodiment 2

[0024] A method for preparing a polyolefin encapsulation film for solar cell modules,

[0025] (1) 95 parts of modified polyolefin resin, 4.5 parts of crosslinking agent, 0.8 part of silane coupling agent, 0.12 part of antioxidant, 0.12 part of ultraviolet light absorber, 0.2 part of light stabilizer, 0.02 part of dispersant, initiator Add 0.01 parts of the agent into the stirring device, mix evenly, and then add it to the single-screw extruder for reaction extrusion. The extrusion temperature of the screw extruder is controlled at 80°C, and the screw speed is 20rpm, and then through extrusion, casting, Cooling to form a film, the modified polyolefin resin is an unsaturated polyolefin containing double bonds, wherein the double bonds account for 18% of the total weight of the unsaturated polyolefin; wherein, the initiator is selected from cyclohexanone peroxide, and the crosslinking agent includes The main cross-linking agent and cross-linking auxiliary agent, the cross-linkin...

Embodiment 3

[0028] A method for preparing a polyolefin encapsulation film for solar cell modules,

[0029] (1) 93 parts of modified polyolefin, 2.5 parts of crosslinking agent, 1.8 parts of silane coupling agent, 0.24 parts of antioxidant, 0.18 parts of ultraviolet light absorber, 0.5 parts of light stabilizer, 0.05 parts of dispersant, initiator Add 0.02 parts into the stirring device, mix evenly, and then add it to a single-screw extruder for reaction extrusion. Control the extrusion temperature of the screw extruder to 90°C, and the screw speed to 25rpm, and then pass extrusion, casting, and cooling Forming a film, the modified polyolefin resin is an unsaturated polyolefin containing double bonds, wherein the double bonds account for 20% of the total weight of the unsaturated polyolefin; wherein, the initiator is selected from cumene hydroperoxide and peroxide-2 -A mixture of tert-amyl ethylhexyl carbonate, the mass ratio of which is 1:1; the cross-linking agent includes a main cross-l...

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Abstract

The invention belongs to the technical field of solar energy packaging material, and especially discloses a polyolefin packaging film used for solar cell modules. The polyolefin packaging film used for solar cell modules comprises, by mass, 91 to 95 parts of modified polyolefin, 0.5 to 4.5 parts of a crosslinking agent (a peroxide cross-linking agent and a tackifier), 0.8 to 2.8 parts of a silanecoupling agent, 0.12 to 0.36 part of an anti-oxidant, 0.12 to 0.25 part of an ultraviolet light absorbent, 0.2 to 0.8 part of a light stabilizing agent, 0.02 to 0.08 part of a dispersant, and 0.01 to0.03 part of an initiator. According to a preparation method, the anti-oxidant, the ultraviolet light absorbent, and the light stabilizing agent are added, so that excess heat oxidation degradation yellowing of an obtained composition in blending extrusion process are avoided, packaging film yellowing aging is prevented effectively from packaging film production process, the aging yellowing resistance of packaging film under solar light radiation in using process is improved, packaging film anti-aging time is prolonged, and the influences on photovoltaic assembly cell output power is reduce.

Description

technical field [0001] The invention belongs to the technical field of solar energy encapsulation materials, in particular to a polyolefin encapsulation film used for solar battery modules. Background technique [0002] Solar energy is a kind of clean energy. It hardly produces any pollution when it is developed and utilized. In addition, its reserves are nearly infinite. It is an ideal alternative energy source for human beings. In order to make full and effective use of solar energy, people have invented a variety of solar materials. According to performance and application, it can be roughly divided into photoelectric conversion materials, photothermal conversion materials, photochemical energy conversion materials and photochromic materials controlled by light energy. Photoelectric and photothermal conversion materials are the most widely used in people's daily life and production process. [0003] Solar photoelectric conversion materials, that is, solar cells, are bas...

Claims

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Application Information

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IPC IPC(8): C09J7/10C09J151/06C09J11/06
CPCC09J7/10C09J11/06C09J151/06C09J2203/322C09J2301/30C09J2301/408C08K5/3475C08K5/1345C08K5/132C08K5/524
Inventor 吕松
Owner CHANGZHOU SVECK PHOTOVOLTAIC NEW MATERIAL
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