Solar cell back plate adhesive resin and preparation method thereof

A technology of solar cells and adhesives, applied in adhesives, circuits, photovoltaic power generation, etc., can solve the problems of poor weather resistance of adhesives, and achieve the effects of improved bonding performance, more bonding anchor points, and high hydroxyl content

Inactive Publication Date: 2020-02-14
SHENYANG RES INST OF CHEM IND
View PDF8 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the linear long-chain polyester only has terminal hydroxyl groups, there are few anchor points with the polyisocyanate curing agent and the backsheet material, and the ester bond of the polyester can undergo hydrolysis reaction in a long-term atmospheric environment, resulting in poor weather resistance of the adhesive.

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
  • Solar cell back plate adhesive resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Add 580.5 grams of terephthalic acid, 720.6 grams of isophthalic acid, 317.0 grams of sebacic acid, 496 grams of ethylene glycol, 128.1 grams of 1,6-hexanediol, and 6.5 grams of trimethylolpropane into a 3L polymerization reactor 1.0 g of antimony acetate, heat up to 240°C within about one hour, adjust the distillation rate of the generated water, keep the pressure in the kettle at 0.25-0.3MPa, and keep the temperature of the top of the water distillation tower below 120°C until the amount of distilled water reaches 170g , to complete the esterification reaction. Turn on the vacuum system, adjust the vacuum in the kettle to about 80Pa for about half an hour, and at the same time, the temperature rises to 275°C to start the polycondensation reaction, react under this condition for 2.5 hours, and discharge to obtain carboxyl-terminated polyester.

[0032] The polyester obtained above was tested by GPC with a molecular weight Mn of 19800, an acid value of 5.36 mgKOH / g, and...

Embodiment 2

[0035] Add 824.0 grams of isophthalic acid, 317.0 grams of adipic acid, 378.2 grams of ethylene glycol, 98.4 grams of 3-methyl 1,5-pentanediol, 4.5 grams of trimethylolpropane, 1.0 grams of Antimony oxide, heat up to 250°C in about one hour, adjust the distillation rate of the generated water, keep the pressure in the kettle at 0.25-0.3MPa, keep the temperature at the top of the distillation tower below 120°C, until the distilled water reaches 90 grams, and complete the esterification process. reaction. Turn on the vacuum system, adjust the vacuum in the kettle to about 60Pa for about half an hour, and at the same time, the temperature rises to 280°C to start the polycondensation reaction, react under this condition for 3 hours, and discharge to obtain carboxyl-terminated polyester.

[0036] The polyester obtained above was tested by GPC to have a molecular weight Mn of 8600, an acid value of 12.80 mgKOH / g, and a hydroxyl value of 0.28 mgKOH / g.

[0037] Add 1200 grams of carb...

Embodiment 3

[0039] Add 580.5 grams of phthalic acid, 720.6 grams of isophthalic acid, 217.0 grams of adipic acid, 612.4 grams of 1,2-propylene glycol, 128.1 grams of 1,4-butanediol, and 6.5 grams of trimethylol in a 3L polymerization reactor Propane, 1.0g of antimony acetate, heat up to 260°C in about one hour, adjust the distillation rate of the generated water, keep the pressure in the kettle at 0.25-0.3MPa, keep the temperature at the top of the distillation tower below 120°C, until the distilled water reaches 165g , to complete the esterification reaction. Turn on the vacuum system, adjust the vacuum degree in the kettle to about 45Pa for about half an hour, and at the same time, the temperature rises to 275°C to start the polycondensation reaction, react under this condition for 2.5 hours, and discharge to obtain carboxyl-terminated polyester.

[0040] The polyester obtained above was tested by GPC to have a molecular weight Mn of 15200, an acid value of 6.00 mgKOH / g, and a hydroxyl ...

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
peel strengthaaaaaaaaaa
acid valueaaaaaaaaaa
hydroxyl valueaaaaaaaaaa
Login to view more

Abstract

The invention belongs to the field of organic synthesis, and relates to a polymer polymerization technology, in particular to solar cell back plate adhesive resin and a preparation method thereof. Thesolar cell back plate adhesive resin is solvent-type bi-component adhesive resin, adopts epoxy chain-extended high-molecular-weight polyester with oxhydryl as a component A, and adopts polyisocyanateas a component B, wherein the component A and the component B are mixed according to the mass ratio of (3:4) to (20:1). A prepared adhesive has good initial peeling strength to a PET film, a PVF filmand an EVA film and is good in weather resistance, and after 3000 h under the condition of double 85, the peeling strength is still larger than 6 N / cm (180-degree peeling); and the application property requirement of the solar cell back plate adhesive can be completely met.

Description

technical field [0001] The invention belongs to the field of organic synthesis, relates to a polymer polymerization technology, in particular to a solar cell backboard adhesive resin and a preparation method thereof. Background technique [0002] Solar cell backsheets mostly use a three-layer film structure, and the layers are bonded with adhesives, which are directly related to the performance and service life of the backsheet. [0003] At present, solar cells mostly use TPT and TPE as the backsheet. The higher the fluorine content of the outer film, the better the weather resistance, but the adhesive performance will also deteriorate, resulting in low interlayer peeling force and other problems. The main manufacturers of backsheet adhesives are all foreign companies. A few domestic companies have low-end adhesive production lines, and their production technology is backward, and the product quality is significantly different from that of foreign products. Therefore, some c...

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 Applications(China)
IPC IPC(8): C09J175/06C08G18/42C08G63/20C08G63/183C08G63/91C08G81/00H01L31/049
CPCC08G18/4213C08G18/4219C08G63/183C08G63/20C08G63/916C08G81/00C09J175/06H01L31/049Y02E10/50
Inventor 付洪娥王新王玉灿魏田鲁琴刘博李致轩
Owner SHENYANG RES INST OF CHEM IND
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap