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Testing method for viscosity of organic carrier for photovoltaic front silver paste

A technology of organic carrier and testing method, which is applied in the direction of measuring devices, flow characteristics, instruments, etc., can solve problems affecting slurry production efficiency and product quality, achieve intuitive and readable sampling volume, ensure measurement accuracy and facilitate the process High performance and test efficiency

Inactive Publication Date: 2016-10-12
DK ELECTRONICS MATERIALS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These randomly generated bubbles of different sizes bring great challenges to the accuracy of organic vehicle viscosity testing, and seriously affect the production efficiency and product quality of the slurry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A method for testing the viscosity of an organic carrier for photovoltaic positive silver paste, the steps of the test method are as follows: a, first fill a measuring cup with 20ml of organic carrier; b, put the measuring cup into a centrifuge whose rotation speed is 500rad / min Centrifuge for 4 minutes until the bubbles are completely removed; c. Increase or reduce the organic carrier in the centrifuged measuring cup to the specified capacity; d. Fix the measuring cup with the specified capacity in a small sample adapter with constant temperature circulating water to keep warm 15min; e. After the viscometer is zeroed, test the organic carrier after heat preservation, and the viscosity value of the organic carrier at the specified speed can be read.

Embodiment 2

[0023] A method for testing the viscosity of an organic carrier for photovoltaic positive silver paste, the steps of the test method are as follows: a, first fill a measuring cup with 25ml of organic carrier; b, put the measuring cup into a centrifuge whose rotation speed is 500rad / min Centrifuge for 5 minutes until the bubbles are completely removed; c. Increase or reduce the organic carrier in the centrifuged measuring cup to the specified capacity; d. Fix the measuring cup with the specified capacity in a small sample adapter with constant temperature circulating water to keep warm 18min; e. After the viscometer is zero-calibrated, test the organic carrier after heat preservation, and the viscosity value of the organic carrier at the specified speed can be read.

Embodiment 3

[0025] A method for testing the viscosity of an organic carrier for photovoltaic positive silver paste, the steps of the test method are as follows: a, first fill a measuring cup with 25ml of organic carrier; b, put the measuring cup into a centrifuge whose rotation speed is 600rad / min Centrifuge for 4 minutes until the bubbles are completely removed; c. Increase or reduce the organic carrier in the centrifuged measuring cup to the specified capacity; d. Fix the measuring cup with the specified capacity in a small sample adapter with constant temperature circulating water to keep warm 20min; e. After the viscometer is zero-calibrated, test the organic carrier after heat preservation, and the viscosity value of the organic carrier at the specified speed can be read.

[0026] The present invention replaces the centrifuge tube of the experimental centrifuge by using a viscosity measuring cup with simple structure, intuitive and readable sampling volume, thorough defoaming, strong ...

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Abstract

The invention discloses a method for testing the viscosity of an organic carrier for photovoltaic positive silver paste. The steps of the test method are as follows: a. First, fill a measuring cup with 15ml-25ml of organic carrier; b. Put the measuring cup into the rotating speed Centrifuge in a centrifuge at 400rad / min~800rad / min for 3min~5min until the foaming is completely removed; c. Increase or decrease the organic carrier in the measuring cup after centrifugation to the specified capacity; d. Put the measuring cup with the specified capacity The cup is fixed in a small sample adapter with constant temperature circulating water and kept warm for 10min to 25min; e. After the viscometer is zeroed, the organic carrier after heat preservation is tested, and the viscosity value of the organic carrier at the specified speed can be read. The test method of the invention can quickly and thoroughly remove the randomly generated air bubbles in the organic carrier, improve the accuracy of the viscosity test, and improve the production efficiency and product quality stability of the photovoltaic positive silver paste.

Description

technical field [0001] The present invention relates to the field of photovoltaic positive silver paste, specifically a kind of which can quickly and thoroughly remove the randomly generated air bubbles in the organic carrier, improve the accuracy of the viscosity test, and provide an accurate basis for the regulation and control of the viscosity of the silver paste in the next step. At the same time, it reduces the number of silver paste viscosity adjustments in the later stage and improves the production efficiency of the photovoltaic front silver paste and the stability of product quality. The method for testing the viscosity of the organic carrier for the photovoltaic front silver paste. Background technique [0002] The organic carrier plays a role in wetting the silver powder and glass powder particles in the photovoltaic front silver paste, and builds a network structure. After stirring and mixing and three-roll grinding, the silver powder and glass powder are evenly d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N11/00
CPCG01N11/00
Inventor 史卫利汪贺杏张洪旺
Owner DK ELECTRONICS MATERIALS INC
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