Preparation method of polyolefin packaging film for solar cell module

A technology of solar cells and polyolefins, applied in electrical components, circuits, photovoltaic power generation, etc., can solve problems such as yellowing, photovoltaic module output power drop, etc., to prevent yellowing and aging, reduce residual monomers, and reduce initiators and the effect of monomer addition

Inactive Publication Date: 2019-01-15
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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  • Preparation method of polyolefin packaging film for solar cell module
  • Preparation method of polyolefin packaging film for solar cell module
  • Preparation method of polyolefin packaging film for solar cell module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A method for preparing a polyolefin encapsulation film for solar cell modules,

[0022] (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

[0025] A method for preparing a polyolefin encapsulation film for solar cell modules,

[0026] (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

[0029] A method for preparing a polyolefin encapsulation film for solar cell modules,

[0030](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 dispersing agent, 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 cr...

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Abstract

The invention belongs to the technical field of solar packaging materials, in particular to a preparation method of a polyolefin packaging film for a solar cell module. the preparation method comprises the following steps: (1) adding raw materials into a stirring device, uniformly mixing, then adding into a single-screw extruder to carry out reaction extrusion, controlling the extrusion temperature of the screw extruder to be 80-100 DEG c and the screw rotating speed of 20-30 rpm, then extruding, casting and cooling to form a film; and (2) carrying out radiation treatment on the surface of oneside of the prepared packaging film in the step (1), and finally cutting and winding to obtain the polyolefin packaging film for the solar cell module; an anti-oxidant, an ultraviolet light absorbentand a light stabilizer are added to prevent the composition from being subjected to yellowing caused by transition thermal oxidative degradation in the blending extrusion process, so that yellowing and aging of the packaging film can be effectively prevented at the beginning of production of the packaging film, the aging and yellowing resistance of the packaging film after being subjected to solar radiation in the using process can be also improved.

Description

technical field [0001] The invention belongs to the technical field of solar energy encapsulation materials, in particular to a preparation method of a polyolefin encapsulation film used for solar cell 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,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/12C08J5/18C08L23/00C08K5/5425C08K5/3475C08K5/132H01L31/048H01L31/18
CPCC08J5/18C08J7/123C08J2323/00C08K5/132C08K5/3475C08K5/5425H01L31/0481H01L31/18Y02E10/50Y02P70/50
Inventor 吕松
Owner CHANGZHOU SVECK PHOTOVOLTAIC NEW MATERIAL
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