Organic adhesive for double-sided PERC aluminum paste and preparation method

A technology of organic adhesives and organic solvents, which is applied in the manufacture of cables/conductors, conductive materials dispersed in non-conductive inorganic materials, electrical components, etc. There are not many research reports to achieve the effect of moderate viscosity, smooth ink return and good printing performance

Inactive Publication Date: 2019-11-29
JIANGSU HOYI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the organic binder will also affect the packing density of the aluminum powder in the slurry, thereby affecting the c

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] In the embodiment of the present invention, the raw materials of the organic binder include: 5% ethyl cellulose, 26% butyl carbitol acetate, 40% butyl carbitol, alcohol ester ten Two 19%, modified hydrogenated castor oil 6%, phosphate esters 1%, glycerin 2%, diffusion pump oil 1%.

[0023] The preparation of the organic binder comprises the following steps:

[0024] (1) Weigh each component according to the proportioning amount;

[0025] (2) Add ethyl cellulose resin, solvent butyl carbitol and butyl carbitol acetate into the stirring device, set the temperature at 60°C, stir at 1500r / min for 120min, heat and stir to make the resin Completely dissolve to form a uniform solution system;

[0026] (3) Add thixotropic agent modified hydrogenated castor oil to the above solution system to activate, continue to stir and disperse, the temperature is controlled at 50°C, the stirring speed is 3000r / min, and the time is 60min. After the stirring is completed, it is naturally co...

Embodiment 2

[0029] The raw materials of the organic binder include: 3% ethyl cellulose resin, 7% polyvinyl butyral PVB resin, 20% ethylene glycol phenyl ether, 15% terpineol, butyl Carbitol 40%, modified hydrogenated castor oil 3%, phosphates 4%, triethylene glycol 3%, diffusion pump oil 5%.

[0030] The preparation of the organic binder comprises the following steps:

[0031] (1) Weigh each component according to the proportioning amount;

[0032] (2) Ethyl cellulose resin, polyvinyl butyral PVB resin, and solvent ethylene glycol phenyl ether, terpineol, and butyl carbitol are added to the stirring device, the temperature is controlled at 60°C, and the stirring speed is The temperature is 1500r / min, and the time is 120min, so that the resin is completely dissolved to form a uniform solution system;

[0033] (3) Add thixotropic agent modified hydrogenated castor oil to the above solution system, continue to stir and disperse, the temperature is controlled at 50°C, the stirring speed is ...

Embodiment 3

[0036] The raw materials of the organic binder include by weight: 5% ethyl cellulose resin, 2% acrylic resin, 15% butyl carbitol acetate, 12.5% ​​dimethyl adipate, tricitric acid Butyl ester 17%, butyl carbitol 40%, polyamide wax 5%, polyether modified copolymer 1%, polyethylene glycol 0.5%, liquid paraffin 2%.

[0037] The preparation of the organic binder comprises the following steps:

[0038] (1) Weigh each component according to the proportioning amount;

[0039] (2) Ethyl cellulose resin, acrylic resin and solvent butyl carbitol acetate, dimethyl adipate, tributyl citrate, and butyl carbitol are added to the stirring device, heated and stirred, and the temperature Control the temperature at 60°C, the stirring speed is 1500r / min, and the time is 120min, so that the resin is completely dissolved to form a uniform solution system;

[0040] (3) Add the thixotropic agent polyamide wax into the above solution system, continue stirring and dispersing, the temperature is contr...

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PUM

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Abstract

The invention discloses an organic adhesive for double-sided PERC aluminum paste and a preparation method, and the organic adhesive is prepared from the following raw materials in percentage by weight: 5-10% of organic resin, 75-85% of an organic solvent, 3-6% of a thixotropic agent, 1-4% of a dispersing agent, 0.5-3% of a plasticizer and 1-5% of a slipping agent. According to the organic adhesiveprovided by the invention, the performance of the organic adhesive is improved through different matching of all the components, and the aluminum paste prepared from the organic adhesive is moderatein viscosity, good in printing performance, smooth in ink returning and free of virtual printing and grid breaking; and printed aluminum grid lines have a higher height-width ratio and are uniform, flat and full in line type. Meanwhile, an organic carrier can ensure close packing of aluminum powder particles in the paste, reduces the bulk resistance of the slurry, and is beneficial to improving the conversion efficiency of the paste.

Description

technical field [0001] The invention relates to the technical field of electronic materials, in particular to an organic adhesive used for double-sided PERC aluminum paste and a preparation method. Background technique [0002] Passivated Emitter Rear Contact (PERC) technology is a very cost-effective means of improving the efficiency of crystalline silicon solar cells in recent years. In recent years, the concept of PERC double-sided cells (PERC+) has been proposed. The back of PERC double-sided cells uses an aluminum grid structure to replace the all-aluminum back field structure of conventional PERC cells. While maintaining high conversion efficiency on the front side, the back side can also generate electricity. At present, the production capacity of PERC cells is still in a period of rapid growth globally. It is expected that in the next 2-3 years, PERC bifacial cells will become the mainstream product of high-efficiency cells. This technology is bound to become the fut...

Claims

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Application Information

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IPC IPC(8): H01B1/22H01B1/16H01B13/00H01L31/0224
CPCH01B1/16H01B1/22H01B13/00H01L31/022441
Inventor 李茂林陈志鹏王茂范宏圆
Owner JIANGSU HOYI TECH
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