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Organic binder for solar battery aluminum paste and preparation method thereof

A technology for solar cells and organic adhesives, which is applied to conductive materials, circuits, electrical components and other directions dispersed in non-conductive inorganic materials, can solve the problems of insufficient viscosity of organic adhesives for aluminum pastes for solar cells, etc. improved effect

Inactive Publication Date: 2018-06-15
CHANGSHA WUDAO IND DESIGN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides an organic adhesive for solar cell aluminum paste and its preparation method to solve the problems in the Chinese patent application document "an organic adhesive for solar cell aluminum paste and its preparation method (application publication number: CN102408653A)" Insufficient Viscosity of Organic Binder for Disclosed Solar Cell Aluminum Paste

Method used

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  • Organic binder for solar battery aluminum paste and preparation method thereof
  • Organic binder for solar battery aluminum paste and preparation method thereof

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preparation example Construction

[0019] The preparation method of organic binder for described solar cell aluminum paste, comprises the following steps:

[0020] S1. Polyvinyl butyral resin, ethanol cellosolve acetate, butyl cellosolve acetate, ethyl cellosolve, BYK-163, BYK-P104S, BYK-110, BYK-141, BYK-052 and BYK -066N mix evenly, heat up to 60-90°C, keep warm for 20-30min, then stir at 650-850r / min for 1-2h, cool to room temperature to obtain the base material;

[0021] S2. Mix ethyl cellulose, polyvinyl acetal, acrylic modified alkyd resin, terpineol, butyl carbitol, hydrogen castor oil, tributyl citrate, furoic acid and bentonite evenly, and heat up To 85-95°C, keep warm for 30-50min, then stir at 1500-2500r / min for 10-30min, cool to room temperature to obtain modified material;

[0022] S3. Raise the temperature of the modified material to 90-110°C, then add the base material and mix evenly, continue to heat up to 120-130°C, keep warm for 1-3h, stir at 1500-2500r / min for 20-40min, cool to room temperat...

Embodiment 1

[0025] An organic adhesive for solar cell aluminum paste, in parts by weight, comprising the following raw materials: 22.9 parts of polyvinyl butyral resin, 6.7 parts of ethyl cellulose, 8.1 parts of polyvinyl acetal, acrylic acid modified alcohol 3.2 parts of acid resin, 4.5 parts of terpineol, 8.4 parts of butyl carbitol, 4.1 parts of hydrogen castor oil, 8.3 parts of ethanol cellosolve acetate, 3.2 parts of butyl cellosolve acetate, 4.6 parts of ethyl cellosolve, 7.4 parts of BYK-163, 3.2 parts of BYK-P104S, 5.6 parts of BYK-110, 3.2 parts of BYK-141, 6.5 parts of BYK-052, 4.6 parts of BYK-066N, 5.3 parts of tributyl citrate, 3.4 parts of furoic acid, 8.9 parts of bentonite.

[0026] The preparation method of organic binder for described solar cell aluminum paste, comprises the following steps:

[0027]S1. Polyvinyl butyral resin, ethanol cellosolve acetate, butyl cellosolve acetate, ethyl cellosolve, BYK-163, BYK-P104S, BYK-110, BYK-141, BYK-052 and BYK -066N mix evenly,...

Embodiment 2

[0031] An organic adhesive for solar cell aluminum paste, in parts by weight, comprising the following raw materials: 15 parts of polyvinyl butyral resin, 9 parts of ethyl cellulose, 6 parts of polyvinyl acetal, acrylic acid modified alcohol 5 parts of acid resin, 2 parts of terpineol, 9 parts of butyl carbitol, 4 parts of hydrogen castor oil, 9 parts of ethanol cellosolve acetate, 2 parts of butyl cellosolve acetate, 6 parts of ethyl cellosolve, 4 parts of BYK-163, 5 parts of BYK-P104S, 3 parts of BYK-110, 5 parts of BYK-141, 3 parts of BYK-052, 5 parts of BYK-066N, 3 parts of tributyl citrate, 4 parts of furoic acid, soap 6 parts of soil.

[0032] The preparation method of organic binder for described solar cell aluminum paste, comprises the following steps:

[0033] S1. Polyvinyl butyral resin, ethanol cellosolve acetate, butyl cellosolve acetate, ethyl cellosolve, BYK-163, BYK-P104S, BYK-110, BYK-141, BYK-052 and BYK -066N mix evenly, heat up to 60-90°C, keep warm for 20...

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Abstract

The invention discloses an organic binder for solar battery aluminum paste and a preparation method thereof. The organic binder for solar battery aluminum paste comprises polyvinyl butyral resin, ethyl cellulose, polyvinyl acetal, acrylic modified alkyd resin, terpineol, butyl carbitol, hydrogenated castor oil, ethanol cellosolve acetate, ethyl cellosolve acetate, ethyl cellosolve, BYK-163, BYK-P104S, BYK-110, BYK-141, BYK-052, BYK-066N, tributyl citrate, furoic acid and bentonite. The organic binder for solar battery aluminum paste is obtained through base preparation, modified material preparation, mixing of the base and the modified material, and heating stirring. The organic binder for solar battery aluminum paste has excellent viscosity.

Description

【Technical field】 [0001] The invention belongs to the technical field of aluminum paste for solar cells, and in particular relates to an organic binder for aluminum paste for solar cells and a preparation method thereof. 【Background technique】 [0002] In the photovoltaic industry chain, the aluminum paste exists as the back electric field (also known as the back field) of the crystalline silicon solar cell, which is to make a layer of heavily doped region with the same conductivity type as the base region on the back of the solar cell. Aluminum paste is composed of aluminum powder, glass powder, organic binder and additives. Among them, the aluminum powder is the conductive phase, and the organic binder is used as a carrier to disperse the aluminum powder, glass powder, additives and other solid powders in the aluminum paste evenly. When printing, the aluminum paste is evenly coated on the back of the silicon wafer, and To ensure the consistency of the printing thickness, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L29/14C08L1/28C08L67/08C08K13/02C08K3/34C08K5/103C08K5/1535H01B1/22H01L31/0224
CPCC08L29/14C08L2203/204C08L2205/025C08L2205/035H01B1/22H01L31/022425C08L1/28C08L67/08C08K13/02C08K3/346C08K5/103C08K5/1535
Inventor 不公告发明人
Owner CHANGSHA WUDAO IND DESIGN CO LTD
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