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Production process for ultrahigh cut-off EVA (ethylene-vinyl acetate) packaging glue film

A packaging film and production process technology, applied in the direction of film/sheet adhesives, adhesives, non-polymer adhesive additives, etc., can solve the problems of UV aging resistance and poor yellowing resistance, and achieve UV resistance Improved aging and yellowing resistance, improved UV aging resistance, and improved UV aging resistance

Inactive Publication Date: 2016-09-07
CHANGZHOU SVECK PHOTOVOLTAIC NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The EVA encapsulation adhesive film in the prior art is poor in UV aging resistance and yellowing resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A production process of ultra-high cut-off EVA encapsulation film, the production process comprises the following steps: combining ethylene-vinyl acetate copolymer resin with rare earth organic light conversion agent, antioxidant, ultraviolet absorber, crosslinking agent and silane coupling agent After fully mixing in proportion, through extrusion-casting-thickness measurement-embossing-shaping-cutting-winding-packing in sequence to obtain super high cut-off EVA packaging film;

[0026] The molar content of vinyl acetate in the ethylene-vinyl acetate copolymer resin is 20%, and the melt flow rate of the ethylene-vinyl acetate copolymer resin is 10g / 10min;

[0027] Rare earth organic light conversion agent is Eu 3+ - Salicylic acid - o-phenanthroline ternary complex.

[0028] The rare earth organic light conversion agent is prepared by the following method:

[0029] (1) First weigh europium oxide and concentrated hydrochloric acid in a molar ratio of 1:6, then heat and...

Embodiment 2

[0038] A production process of ultra-high cut-off EVA encapsulation film, the production process comprises the following steps: combining ethylene-vinyl acetate copolymer resin with rare earth organic light conversion agent, antioxidant, ultraviolet absorber, crosslinking agent and silane coupling agent After fully mixing in proportion, through extrusion-casting-thickness measurement-embossing-shaping-cutting-winding-packing in sequence to obtain super high cut-off EVA packaging film;

[0039] The molar content of vinyl acetate in the ethylene-vinyl acetate copolymer resin is 30%, and the melt flow rate of the ethylene-vinyl acetate copolymer resin is 20g / 10min;

[0040] Rare earth organic light conversion agent is Eu 3+ - Salicylic acid - o-phenanthroline ternary complex.

[0041] The rare earth organic light conversion agent is prepared by the following method:

[0042] (1) First weigh europium oxide and concentrated hydrochloric acid in a molar ratio of 1:6, then heat and...

Embodiment 3

[0051]A production process of ultra-high cut-off EVA encapsulation film, the production process comprises the following steps: combining ethylene-vinyl acetate copolymer resin with rare earth organic light conversion agent, antioxidant, ultraviolet absorber, crosslinking agent and silane coupling agent After fully mixing in proportion, through extrusion-casting-thickness measurement-embossing-shaping-cutting-winding-packing in sequence to obtain super high cut-off EVA packaging film;

[0052] The molar content of vinyl acetate in the ethylene-vinyl acetate copolymer resin is 40%, and the melt flow rate of the ethylene-vinyl acetate copolymer resin is 30g / 10min;

[0053] Rare earth organic light conversion agent is Eu 3+ - Salicylic acid - o-phenanthroline ternary complex.

[0054] The rare earth organic light conversion agent is prepared by the following method:

[0055] (1) First weigh europium oxide and concentrated hydrochloric acid in a molar ratio of 1:6, then heat and ...

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Abstract

The invention relates to the technical field of packaging glue films, in particular to a production process for an ultrahigh cut-off EVA (ethylene-vinyl acetate) packaging glue film. The production process comprises the following steps that EVA copolymer resin is fully mixed with a rare earth organic light conversion agent, antioxygen, an ultraviolet light absorbing agent, a cross-linking agent and a silane coupling agent in proportion, then, extruding, curtain coating, thickness measuring, knurling, sizing, edge cutting, rolling and packaging are carried out in sequence, and the ultrahigh cut-off EVA packaging glue film is produced. The transparence and ultraviolet aging resistance of the EVA glue film manufactured through the manufacturing method are greatly improved, and therefore the ultraviolet aging resistance of the glue film is improved, the service life of a solar cell assembly is prolonged, and the EVA glue film plays a very good role in protecting the back material of the assembly.

Description

technical field [0001] The invention relates to the technical field of packaging adhesive films, in particular to a production process of an ultra-high cut-off EVA packaging adhesive film. Background technique [0002] Battery Encapsulation Adhesive Film (EVA) is a thermosetting adhesive film used to be placed between laminated glass (EVA is the abbreviation of Ethylene Vinyl Vinyl Acetate). Due to the superiority of EVA film in terms of adhesion, durability, and optical properties, it is more and more widely used in current components and various optical products. [0003] The EVA encapsulating adhesive film in the prior art has poor ultraviolet aging resistance and yellowing resistance. Contents of the invention [0004] The technical problem to be solved by the present invention is: to overcome the deficiencies in the prior art, and provide a production process of an ultra-high cut-off EVA encapsulating adhesive film with strong ultraviolet aging resistance and yellowi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/00C09J123/08C09J131/04C09J11/06
CPCC08K5/00C08K5/132C08K2201/014C09J7/00C09J11/06C09J123/0853C09J131/04C09J2203/33C09J2301/408C09J2301/414C09J2423/04C09J2431/00
Inventor 张好宾吕松何胡送
Owner CHANGZHOU SVECK PHOTOVOLTAIC NEW MATERIAL
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