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EVA (ethylene-vinyl acetate) locating adhesive tape for crystalline silicon solar cell module

A solar cell, crystalline silicon technology, applied in electrical components, semiconductor devices, circuits, etc., can solve the problems of poor adhesion, tape blistering, tape yellowing and aging, etc., to improve the use effect, ensure long-term use, good quality The effect of adhesion and aging resistance

Inactive Publication Date: 2014-02-05
ZHEJIANG ZHENGXIN PHOTOVOLTAIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current positioning tape can prevent the battery from shifting, but the adhesion between PET and EVA, PET and the battery sheet is poor, and it is easy to cause blisters on the tape after lamination and peeling off the tape during use. layer, resulting in large-area delamination and affecting the service life of solar cell modules
In addition, PET has poor aging resistance and is prone to tape yellowing and aging

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The present invention will be further described below in conjunction with the examples, but not as a basis for limiting the present invention.

[0018] Example. An EVA positioning tape for crystalline silicon solar cell modules, comprising a tape substrate and a solvent glue layer arranged on the tape substrate, the tape substrate is composed of 93-97 parts by weight of EVA resin and 3 parts by weight -7 parts of modified additives.

[0019] The adhesive tape substrate is composed of 95 parts by weight of EVA resin and 5 parts by weight of modification aid.

[0020] The EVA resin comprises 25-33% by weight of vinyl acetate, and the balance is ethylene.

[0021] The EVA resin can also be commercially available, such as EV150, EV250, 750, 3325, 3345, VE700, VE810, KA-10, KA-40, MH-30, MA-10, UL04028, UL04533, etc.

[0022] The modification auxiliary agent is composed of an organic peroxide crosslinking agent, a silane coupling agent, an anti-ultraviolet aging agent and...

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Abstract

The invention discloses an EVA (ethylene-vinyl acetate) locating adhesive tape for a crystalline silicon solar cell module. The EVA locating adhesive tape comprises an adhesive tape base material and a solvent adhesive layer arranged on the adhesive tape base material, wherein the adhesive tape base material comprises the following components by parts by weight: 93-97 parts of EVA resin, and 3-7 parts of performance additive. The adhesive tape base material is made of EVA resin, in the lamination and solidification process of the modules, the adhesive tape base material and the EVA adhesive film can be melted and solidified into a whole, the adhesive tape does not have bubbles and layers, so that the EVA locating adhesive tape not only can play a role in locating battery pieces, but also has good adhesive property and ageing resistance, and ensures that the solar cell module can be used for a long time.

Description

technical field [0001] The invention relates to a positioning adhesive tape for crystalline silicon solar cells, in particular to an EVA positioning adhesive tape for crystalline silicon solar cell components. Background technique [0002] Crystalline silicon solar cells include monocrystalline silicon cells and polycrystalline silicon cells. The thickness is generally between 0.15-0.20MM. The main specifications of the cells are: 125*125MM and 156*156MM. The power of a single cell is below 5W. In current use, batteries need to be connected in series to form solar cell modules of various combinations, and the power of each module is between 10-300W. The components are laminated by tempered glass, EVA, solar cells, back sheets and other materials and then thermoformed. There is generally a gap of about 3 mm between the battery strings. During the lamination process of the modules, due to the shrinkage and fluidity of the packaging material, the battery displacement problem i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/02C08L23/08C08K5/14H01L31/048
CPCY02E10/50
Inventor 李正茂
Owner ZHEJIANG ZHENGXIN PHOTOVOLTAIC TECH
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