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A kind of acrylic coating low water vapor transmission rate polyester film and preparation method thereof

An acrylic type, polyester film technology, applied in 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: 2016-08-17
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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  • A kind of acrylic coating low water vapor transmission rate polyester film and preparation method thereof
  • A kind of acrylic coating low water vapor transmission rate polyester film and preparation method thereof
  • A kind of acrylic coating low water vapor transmission rate polyester film and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0028] Part 1: Preparation of acrylic adhesive

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

[0030] In a weighable preparation container, add 50 parts by weight of deionized water, add 10 to 40 parts by weight of a water-soluble acrylic emulsion containing 40% acrylic resin under stirring, continue stirring for 30 minutes, and then add a very small amount of pH Adjusting agent 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 parts by weight of surfactant, and 0.2-0.5 parts by weight in order under stirring. Adding 0.2-0.5 parts by weight of defoaming agent, adding 0.02-0.4 parts by weight of curing agent, and then adding deionized water until the total material reaches 100 parts by weight, again adding a very small amount of N,N-dimethylethanolamine to adjust the pH to 9.5 , And then stir for 30 minutes to prepare acrylic glue.

Embodiment 1

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

[0033]

[0034]

[0035] Acrylic glue 1# was prepared with the above formula and the basic process of preparing acrylic glue in Examples 1-14.

Embodiment 2

[0037] Preparation formula 2 of acrylic adhesive with low water vapor transmission rate coating of the present invention:

[0038]

[0039] Acrylic glue 2# was prepared with the above formula and the basic preparation process 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 an organic polymer compound and its preparation, and relates to an acrylic-type coated polyester film with low water vapor transmission rate and a preparation method thereof. The acrylic-type coated polyester film with low water vapor transmission rate prepared by the invention is suitable for manufacturing solar battery backsheet films 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 backsheet film is 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 to improve the service life of solar cells , This research work has always been highly valued by people. Many researches in this field use different methods to solve solar polyester film water vapor barrier, insulation, dimensional stability, humidity a...

Claims

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Application Information

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Patent Type & Authority Patents(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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