Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Polyurethane adhesive, adhesive for solar cell protective sheet, and backside protective sheet for solar cell

A solar cell, polyurethane technology, applied in the direction of adhesive types, adhesives, circuits, etc., can solve the problems of inability to maintain strong adhesive strength for a long time, decrease in water vapor barrier property, decrease in adhesive strength, etc. Good bonding strength, good bonding strength, and the effect of maintaining bonding strength

Active Publication Date: 2014-06-18
TOYO INK SC HOLD CO LTD
View PDF13 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, as shown in Patent Documents 1 and 2, when the adhesives of the prior art are exposed to the outdoors, the adhesive strength decreases with the passage of time due to hydrolysis, etc., so that the strong adhesive strength cannot be maintained for a long time, and the Cause poor appearance and delamination
As a result, the barrier properties against water vapor and the like are reduced, and the function of the multilayer film is lost.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Polyurethane adhesive, adhesive for solar cell protective sheet, and backside protective sheet for solar cell
  • Polyurethane adhesive, adhesive for solar cell protective sheet, and backside protective sheet for solar cell
  • Polyurethane adhesive, adhesive for solar cell protective sheet, and backside protective sheet for solar cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～21、 comparative example 1～15

[0189] Various main agents and the following curing agents were prepared at 100:10 (weight ratio), diluted with ethyl acetate to adjust the solid content to 30%, and the obtained solutions were used as the adhesive solutions of each example and each comparative example, Evaluation was performed by the method described below.

[0190] Each combination which is Examples 1-21 and Comparative Examples 1-15 is described in Table 4A and Table 4B.

[0191] Curing agent D1

[0192] The trimer of isophorone diisocyanate was diluted with ethyl acetate to obtain a resin solution with a solid content of 50%, thereby obtaining curing agent D1.

[0193] Curing agent D2

[0194] The trimer of hexamethylene diisocyanate was diluted with ethyl acetate to form a resin solution with a solid content of 50%, thereby obtaining curing agent D2.

[0195] Curing agent D3

[0196] Mix 100 parts of the trimer of isophorone diisocyanate and 100 parts of the adduct of hexamethylene diisocyanate and tr...

Embodiment 22、 comparative example 16

[0216] According to the same 100:10 (weight ratio) as in Example 1, in the case of Example 22, the main agent 1 and curing agent D1 are prepared, and in the case of Comparative Example 16, the main agent 19 and curing agent D1 are prepared. It was diluted with ethyl acetate, and the solution adjusted to a solid content of 30% was used as a binder solution.

[0217] Use a dry film laminating machine to coat the adhesive on one side of the untreated polyester film (thickness 125μm) with a coating amount of 8-10g / square meter. After the solvent evaporates, laminate the white PVF film (thickness 37.5μm) ). Then use a dry film laminating machine to coat the adhesive on one side of the untreated polyester film that is not laminated with white PVF film at a coating amount of 8-10g / square meter. After the solvent evaporates, laminate the EVA film (Thickness 100μm). Thereafter, curing (aging) was performed at 60° C. for 7 days, and the adhesive was cured to obtain a back surface prot...

Embodiment 23、 comparative example 17

[0219] Apply the same adhesive used in Example 22 and Comparative Example 16 to one side of an untreated polyester film (thickness 75 μm) with a dry film laminating machine at a coating amount of 8 to 10 g / square meter. Laminate aluminum foil (thickness 17.5μm) after the solvent evaporates. Then use a dry film laminating machine to coat the adhesive on the laminated aluminum foil surface with a coating amount of 8-10g / square meter, and laminate a white PVF film (thickness 37.5μm) after the solvent evaporates. Then use a dry film laminating machine to coat the adhesive on one side of the untreated polyester film that is not laminated with aluminum foil with a coating amount of 8-10g / square meter. After the solvent evaporates, laminate the EVA film (thickness 100μm). Thereafter, curing (aging) was performed at 60° C. for 7 days, and the adhesive was cured to obtain a back surface protection sheet for solar cells, which was evaluated by the same method as in Example 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

Provided is an adhesive that has favorable adhesive strength for use in the untreated surface material of an untreated polyester film or the like; suppresses a decrease in adhesion strength over time, even in outdoor exposure conditions; and is capable of maintaining adhesion strength over a long period of time. This polyurethane adhesive is a polyurethane adhesive using a main agent and a curing agent, wherein the main agent contains a specific polyester polyol (A), a specific polycarbonate polyurethane polyol (B), and a specific bisphenol type epoxy resin (C) at a specific ratio, and the curing agent contains a specific amount of a polyisocyanate component with an isocyanurate skeleton.

Description

technical field [0001] The invention relates to a polyurethane adhesive using a main agent and a curing agent. Furthermore, this invention relates to the adhesive agent for solar cell protection sheets, and the back surface protection sheet for solar cells. Background technique [0002] In recent years, for example, in barrier materials, exterior wall materials, roofing materials, solar cell panel materials (solar cell back protection sheet, solar cell surface protection sheet), window materials, outdoor floor materials, lighting protection materials, automotive parts, billboards, Multilayer (composite) laminates for outdoor industrial applications such as labels have been put into practical use. A multilayer laminate can be obtained by laminating metal-based materials, plastic-based materials, or the like. Metal-based materials include metal foils, metal plates, metal vapor-deposited films, and the like made of aluminum, copper, steel sheets, and the like. Examples of pl...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/06C09J163/02C09J167/03C09J169/00
CPCC09J175/04C09J163/00C08G18/44C08G18/4615C08G18/791C08G18/4208Y02E10/50H01L31/0487C08L75/04H01L31/049
Inventor 前田谕志堀口雅之安井文五杉裕纪前田诚治
Owner TOYO INK SC HOLD CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com