Low water vapor transmission rate type polyester film for acrylic acid type coating and preparation method of low-water vapor transmission rate type polyester film

An acrylic type, polyester film technology, applied in the direction of coatings, chemical instruments and methods, layered products, etc., can solve the problems of high water vapor transmission rate, poor insulation, poor barrier properties, etc., to achieve convenient operation, stable performance, The effect of strong water resistance

Active Publication Date: 2014-04-30
四川东方绝缘材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention can effectively solve the problems of high water vapor transmission rate, poor barrier property and poor insulation of the existing polyester film used in solar battery backplane film during use; it provides an acrylic type coating for solar battery backplane film with low Water vapor transmission rate polyester film (abbreviation: acrylic type coating film) and preparation method thereof

Method used

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  • Low water vapor transmission rate type polyester film for acrylic acid type coating and preparation method of low-water vapor transmission rate type polyester film
  • Low water vapor transmission rate type polyester film for acrylic acid type coating and preparation method of low-water vapor transmission rate type polyester film
  • Low water vapor transmission rate type polyester film for acrylic acid type coating and preparation method of low-water vapor transmission rate type polyester film

Examples

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preparation example Construction

[0028] The first part of the preparation of acrylic glue

[0029] The basic process for the preparation of the acrylic glue of Examples 1-14:

[0030] In a preparation container that can be weighed, add 50 parts by weight of deionized water, add 10 to 40 parts by weight of water-soluble acrylic emulsion containing 40% acrylic resin under stirring, continue stirring for 30 minutes, and then add a very small amount of pH Regulator N,N-dimethylethanolamine, to make the pH of the water-soluble acrylic emulsion = 9.5, add 1.6-6.4 parts by weight of nano-silica sol, 0.5-1 part by weight of surfactant, and 0.2-0.5 parts by weight of leveling agent in sequence under stirring agent, 0.2-0.5 parts by weight of defoamer, add 0.02-0.4 parts by weight of curing agent, then add deionized water until the total material reaches 100 parts by weight, add a very small amount of N,N-dimethylethanolamine dropwise to adjust the pH to 9.5 , and then stirred for 30 minutes to obtain an acrylic glue....

Embodiment 1

[0032] Preparation formula 1 of the acrylic glue of the low water vapor transmission rate coating of the present invention:

[0033]

[0034] Acrylic glue 1# was formulated with the above formula and the basic process for the preparation of acrylic glue in Examples 1-14.

Embodiment 2

[0036] Preparation formula 2 of the acrylic glue of the low water vapor transmission rate coating of the present invention:

[0037]

[0038]Acrylic glue 2# was formulated with the above formula and the basic process for the preparation of acrylic glue in Examples 1-14.

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Abstract

The invention discloses a low-water vapor transmission rate type polyester film for an acrylic acid type coating. The low-water vapor transmission rate polyester film is characterized by consisting of a double-direction stretching polyester film prepared from polyethylene terephthalate or poly-2,6-ethylene naphthalate and acrylic acid type glue coatings, wherein the both sides of the film are coated with the acrylic acid type glue coatings; the thickness of the polyester film is 150-250 microns; the thickness of the acrylic acid type glue coatings is 0.08-0.32 microns; acrylic acid type glue consists of a water-based acrylic emulsion, a nanometer silicon sol, a surfactant, a flatting agent, a de-foaming agent, a curing agent and de-ionized water; after a polyester chip is cast to form a casting piece through an extruder and forms a film through vertical stretching, the both surfaces of the film are coated with the acrylic acid type glue in an online coating manner; the low-water vapor transmission rate type polyester film for the acrylic acid type coating is prepared by transverse stretching, drying, cross-linking, curing and thermal shaping. The film provided by the invention can be used for manufacturing a backboard film for a solar battery or other products in need of the low-water vapor transmission rate polyester film.

Description

technical field [0001] The invention belongs to organic macromolecular compounds and their preparation, and relates to an acrylic type coated polyester film with low water vapor transmission rate and a preparation method thereof. The polyester film with acrylic type coating and low water vapor transmission rate prepared by the invention is suitable for manufacturing solar cell back sheet film or other polyester film products requiring low water vapor transmission rate. Background technique [0002] The polyester film material used in the manufacture of solar cell backplane film, as one of the basic materials of solar cell modules, one of its important functions is to make the polyester film material have a low water vapor transmission rate, so as to improve the service life of solar cells , this research work has been highly valued by people. Many studies in this field have adopted different methods to solve the water vapor barrier, insulation, dimensional stability, moistu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B33/00B32B27/36B32B27/30B32B27/08C09D133/00C09D7/12
Inventor 李明勇徐秀桃罗春明刘洪乐王明许显成朱东海
Owner 四川东方绝缘材料股份有限公司
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