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Flocking liquid and preparation method thereof

A flocking liquid and flocking technology, which is applied in the field of flocking liquid and flocking liquid preparation, can solve problems affecting the appearance of cells and power generation efficiency, instability between batches of flocking process, mottled flakes, etc., to achieve direct Effects of cost reduction, reduction in thinning quantity, and improvement of bending degree

Inactive Publication Date: 2010-09-29
上海长悦涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the flocking liquid used in the existing flocking process for preparing solar cells contains low-boiling, volatile chemical substances such as isopropanol, which will cause flocking during use. Instability between process batches, and a large number of mottled flakes often appear, which seriously affects the appearance of the cell and the power generation efficiency. A flocking solution is provided for this problem. This flocking solution is used in the flocking process The flocking solution described in the invention can at least fundamentally solve the above-mentioned technical problems

Method used

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Embodiment

[0037] The flocking liquid described in this embodiment includes electronic grade potassium hydroxide with a mass percentage of 10%, sodium silicate with a mass percentage of 25%, and a mixture of pentanol valerate with a mass percentage of 10% (in which valeric acid and pentanol The mass ratio is 2.5:1), and the rest is pure water. Both valeric acid and pentanol are analytical pure reagents produced by Shanghai No. 3 Reagent Factory.

[0038] The following specifically introduces the steps of the method for preparing the flocking liquid described in this embodiment (the percentages mentioned below are all mass percentages):

[0039] 1. Add 20% industrial pure water and 10% electronic grade potassium hydroxide into the reactor, stir at medium speed (800-2500r / min) to promote its dissolution, and keep the temperature of the solution at 70℃ through a heating spacer . The mixing time is controlled at 25 minutes;

[0040] 2. After the potassium hydroxide is completely dissolved, add th...

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Abstract

The invention belongs to the technical field of chemical industry, and relates to flocking liquid, in particular to flocking liquid applied in a flocking process of a process for manufacturing a solar cell; and meanwhile, the invention also discloses a preparation method for the flocking liquid. In order to solve the problems that etching liquid used in the conventional flocking process for manufacturing the solar cell contains low-boiling-point and easily volatile chemical substances such as isopropanol and the like and the chemical substances cause instability between batches of the flocking process during use and frequently produce a large amount of spotted plates to seriously affect the appearance and power generation efficiency of cell plates, the invention provides the flocking liquid. The flocking liquid comprises alkali capable of reacting with silicon, aqueous solution of silicate and mixture of amyl acid and amyl alcohol, wherein the mass ratio of the amyl acid to the amyl alcohol in the mixture of the amyl acid and the amyl alcohol is 3:1-2:1.

Description

Technical field [0001] The invention belongs to the technical field of chemical industry, and relates to a flocking liquid, especially a flocking liquid used in the flocking process of the solar cell manufacturing process. At the same time, the invention also introduces the preparation method of the flocking liquid. Background technique [0002] In today's world, silicon-based solar cells can be divided into two camps: polycrystalline and monocrystalline solar cells. The flocking process is the first process in the solar cell manufacturing process, and it is also an extremely critical process. Generally speaking, the reflectivity of silicon-based materials for solar cells is 30-35%, which means that 100% of the solar light is projected onto the silicon-based surface, and about 30-35% of the solar light is reflected, and this part cannot be used effectively. The energy of sunlight. The main function of the flocking process is to minimize the reflectivity of silicon-based materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C15/00
Inventor 周建国马星雪
Owner 上海长悦涂料有限公司
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