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A kind of glass powder for high temperature resistant aluminum paste and preparation method thereof

A technology of glass powder and high temperature resistance, which is applied in the field of glass powder for high temperature resistant aluminum paste and its preparation. It can solve the problems of insufficient water boiling resistance, reduced electrical properties, and good wettability, and achieves wide glass formation range and high surface tension. Low, good wettability effect

Active Publication Date: 2019-08-13
GUANGZHOU RUXING TECH DEV +1
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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 to provide a glass powder for high-temperature-resistant aluminum paste. Problems such as high-temperature aluminum bracts, reduced electrical properties, and insufficient boiling resistance

Method used

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  • A kind of glass powder for high temperature resistant aluminum paste and preparation method thereof
  • A kind of glass powder for high temperature resistant aluminum paste and preparation method thereof
  • A kind of glass powder for high temperature resistant aluminum paste and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] The glass powder for high-temperature-resistant aluminum paste provided in this embodiment is composed of the following raw materials in mass percentage:

[0026] Bi 2 o3 35%, B 2 o 3 25%, SiO 2 3%, Al 2 o 3 0.1%, ZnO 19.9%, MgO 5%, V 2 o 5 2%, Sb 2 o 3 10%.

[0027] where MgO comes from MgCO 3 , Al 2 o 3 from Al(OH) 3 .

[0028] The preparation method of glass powder for this high temperature resistant aluminum paste is as follows:

[0029] (1) According to the above-mentioned mass percentage, weigh various raw materials and mix them evenly in the mixer, put the mixed materials into the crucible for melting, adjust the melting temperature to 1000-1300°C, and heat-preserve and melt for 30-120 minutes;

[0030] (2) The glass slag quenched with deionized water is dried by ball milling with deionized water for 10 to 20 hours, and the glass slurry after ball milling is left to stand and separated to remove the upper layer of water, and then dried in an ...

Embodiment 2

[0032] The glass powder for high-temperature-resistant aluminum paste provided in this embodiment is composed of the following raw materials in mass percentage:

[0033] Bi 2 o 3 10%, B 2 o 3 50%, SiO 2 0.1, Al 2 o 3 2%, ZnO 15%, CaO 10%, V 2 o 5 1.9%, Sb 2 o 3 10%, MoO 3 1%.

[0034] where CaO comes from CaCO 3 , Al 2 o 3 from Al(OH) 3 .

[0035] The preparation method of the glass frit for the high temperature resistant aluminum paste is the same as in Example 1.

Embodiment 3

[0037] The glass powder for high-temperature-resistant aluminum paste provided in this embodiment is composed of the following raw materials in mass percentage:

[0038] Bi 2 o 3 40%, B 2 o 3 13%, SiO 2 5%, Al 2 o 3 2%, ZnO 5%, MgO 20%, P 2 o 5 10%, WO 3 5%.

[0039] The preparation method of the glass frit for the high temperature resistant aluminum paste is the same as in Example 1.

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Abstract

The invention discloses a glass powder for high temperature-resistant aluminum slurry. The glass powder is prepared from the following raw materials in percentage by weight: 10 to 50% of Bi2O3 (bismuth trioxide), 5 to 50% of B2O3 (boric oxide), 0.1 to 5% of SiO2 (silicon dioxide), 0.1 to 2% of Al2O3 (aluminum oxide), 5 to 20% of ZnO (zinc oxide), 1 to 20% of alkaline earth oxide, and 0.1 to 15% of one or combination of multiple of V2O5 (vanadium pentoxide), P2O5 (phosphorus pentoxide), Sb2O3 (antimonous oxide), MoO3 (molybdenum trioxide), WO3 (tungsten trioxide) and Cr2O3 (chromic oxide). The glass powder has the advantages that the chemical stability is good, the softening point is high, the material characteristic is short, the wetting property is good, and the technical problems of high temperature aluminum bulge, degrading of electricity, low water boiling-resistant property and the like in the existing aluminum slurry after high-temperature sintering are solved. The invention also discloses a preparation method of the glass powder for the high temperature-resistant aluminum slurry.

Description

technical field [0001] The invention belongs to the technical field of back aluminum paste, and in particular relates to a glass powder for high temperature resistant aluminum paste and a preparation method thereof. Background technique [0002] The aluminum paste of crystalline silicon solar cells is used as the back field to passivate the silicon wafers. Due to the differences in the front silver used by different photovoltaic manufacturers and the differences in the cells themselves, there will be some differences in the sintering temperature of the paste, and these differences Existence puts forward higher requirements on the temperature resistance characteristics of the back field aluminum paste. [0003] The composition of aluminum paste mainly includes aluminum powder, inorganic binder, organic binder and different additives, and glass powder belongs to inorganic binder. In the known field, the composition of glass powder includes network formers and network modifier...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C12/00
CPCC03C12/00
Inventor 谢欣丁冰冰
Owner GUANGZHOU RUXING TECH DEV
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