Solvent-free composite binding agent for solar back board and preparation method thereof

A technology for solar back sheets and adhesives, applied in the directions of adhesive additives, polymer adhesive additives, non-polymer adhesive additives, etc., can solve the problem of high requirements for multi-layer co-extrusion composite film equipment and limited resin types , the problem of high equipment price, to achieve the effect of increasing the initial peel strength, low viscosity and low initial viscosity

Inactive Publication Date: 2016-04-27
JUHUA GROUP TECH CENT
View PDF5 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the adhesives used in solar backsheets are solvent-based adhesives. During the construction process, a large amount of organic solvents will be released into the environment, polluting the environment, and at the same time, a large amount of energy is consumed to remove the solvent in the adhesive.
Although the patents CN201210485323.5 and CN201210235132.3 disclose a multilayer co-extrusion method to prepare a solar backplane film, the performance meets the requirements of the solar backplane film and can achieve the above purpose, but the multilayer coextrusion composite film preparation equipment requires high , the equipment price is high, the process is complicated, and the types of resins that can be selected for co-extrusion are limited

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

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] A kind of preparation method of solvent-free composite adhesive for solar back sheet of the present invention, it comprises the following steps:

[0025] (a) Preparation of component A: Put the small molecule diol into the reaction kettle, add polyether polyol, catalyst, leveling agent, adhesion promoter, and antioxidant in turn, and stir at 25°C for 1 hour to prepare Get A component;

[0026] (b) Preparation of polyether whose end group is -NCO in component B: put the polyether polyol in a three-necked flask, and under the protection of nitrogen atmosphere, heat up to 60-70°C, and add polyisocyanate (-OH / -NCO=1:1), take samples after reacting for 4 to 5 hours, measure the content of -NCO group, stop the reaction when the mass percentage of -NCO changes ≤ 0.02%, and the number average molecular weight of polyether polyol is between 600 and 3000 Polyoxypropylene diol or triol, polyoxypropylene and oxyethylene copolymer diol or triol, polytetrahydrofuran diol or triol, ...

Embodiment 1

[0036] Preparation of component A: put 20g of ethylene glycol into the reaction kettle, add 100g of polyoxypropylene glycol, 5g of triethylenetetramine, 10g of polydimethylsiloxane, bis-[γ-(triethoxy Silicon) propyl] tetrasulfide (Si-69) 5g, 2,6-di-tert-butyl-4-methylphenol 0.1g, stirred at 25°C for 1h to prepare component A.

[0037] Preparation of polyether whose end group is -NCO in component B: put 100g of polyoxypropylene diol in a three-necked flask, under the protection of nitrogen atmosphere, heat up to 60°C, add 100g of toluene diisocyanate (to -OH / -NCO=1:1), take a sample after 4 hours of reaction, measure the content of -NCO group, and stop the reaction when the mass percentage of -NCO changes ≤ 0.02%.

[0038] Preparation of component B: Put 90 parts of the above-mentioned polyether whose end group is -NCO into the reaction kettle, add 1 g of benzoyl chloride and 0.1 g of polycarbodiimide in sequence, and stir at 25°C for 1 hour to prepare component B .

[0039]...

Embodiment 2

[0042] Preparation of component A: put 25g of 1,4-butanediol into the reaction kettle, add 100g of polyoxypropylene and ethylene oxide copolymer diol, 6g of methyldiethanolamine, 10g of polyether modified silicone, bis -[γ-(triethoxysilyl)propyl]disulfide (Si-75) 6g, 2,2'-methylene bis(4-methyl-6-tert-butylphenol) 0.2g, 25 Stir at ℃ for 1 h to obtain component A.

[0043] Preparation of polyether whose end group is -NCO in component B: put 100g of polyoxypropylene and ethylene oxide copolymer triol in a three-necked flask, under the protection of nitrogen atmosphere, heat up to 65°C, and add 90g of diphenyl Methyl methane diisocyanate (to -OH / -NCO = 1:1), take a sample after 4.5 hours of reaction, measure the content of -NCO group, and stop the reaction when the mass percentage of -NCO changes ≤ 0.02%.

[0044] Preparation of component B: Put 90 parts of the above-mentioned polyether whose end group is -NCO into a reaction kettle, add 2 g of phosphoric acid and 0.3 g of polyc...

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
viscosityaaaaaaaaaa
viscosityaaaaaaaaaa
Login to view more

Abstract

The invention discloses a solvent-free composite binding agent for a solar back board and a preparation method thereof. The composite binding agent consists of an ingredient A and an ingredient B; the functional group mole ratio OH/NCO of the ingredient A to the ingredient B is (1.0-1.2):1.0; meanwhile, the preparation method of the composite binding agent is used. The preparation method comprises the following steps of (a) ingredient A preparation; (b) preparation of polyether with the terminal group being -NCO in the ingredient B; (c) ingredient B preparation; (d) binding agent preparation. The prepared composite binding agent has the characteristics that no solvent is used; no pollution exists; the operation safety is high. Through the recipe design of the binding agent, the initial viscosity of the binding agent is reduced; convenience is brought for construction; the initial peeling strength between the binding agent and a substrate is enhanced; the peeling strength between initial layers of the solar back board can reach 4.0N/cm.

Description

technical field [0001] The invention discloses a preparation method of a solvent-free composite adhesive for a solar backboard, and in particular relates to a solvent-free polyurethane adhesive for a solar backboard and a preparation method thereof. Background technique [0002] At present, solar cells have become one of the most important new energy sources introduced by various countries. In order to make the service life of solar cells reach more than 25 years, a back sheet with certain mechanical strength, excellent weather resistance, heat resistance and electrical insulation properties is required in the battery module to guarantee. Since a single material cannot meet the above performance requirements, the most commonly used solar backsheet is a three-layer composite structure, that is, the upper and lower layers are fluorine-containing films such as polyvinyl fluoride (PVF) or polyvinylidene fluoride (PVDF), and the middle layer is poly- Ethylene phthalate (PET), bu...

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): C09J175/08C09J11/08C09J11/04C09J11/06C08G18/66C08G18/48C08G18/50C08G18/32C08G18/67C08G18/10
CPCC08G18/10C08G18/4825C08G18/4837C08G18/4854C08G18/5015C08L2203/204C08L2205/03C09J11/04C09J11/06C09J11/08C09J175/08C08G18/6674C08G18/6696C08G18/6677C08L83/04C08L79/00C08L83/12
Inventor 付铁柱姜文军
Owner JUHUA GROUP TECH CENT
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