High-temperature resistant lead-less glass powder for glass fiber net printing ink, preparation and application thereof

A lead-free glass powder and screen printing technology, applied in the field of lead-free glass powder, can solve the problems affecting the fluidity and airtightness of glass sealing, can not meet the demand of lead-free, and the price does not have an advantage, etc., to achieve color Bright color, good firmness and good fluidity

Inactive Publication Date: 2008-07-02
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Asahi Glass Special Fair 7-25568 proposes PbO-SiO that can be used in the dielectric layer of ion display (PDP) and fluorescent display (VFD) 2 It is a glass frit paste, and its glass composition contains: PbO, SiO 2 、Al 2 o 3 , SnO 2 、TiO 2 , CaO, BaO, CeO 2 , La 2 o 3 , B 2 o 3 , ZnO, SrO, MgO, the expansion coefficient is 80~90×10 -7 Near /℃, the expansion coefficient is reduced by adding fillers, and the densification of the dielectric layer is realized through the optimization of the composition of the lead glass and the proper proportion of the fillers. However, the biggest disadvantage is that it contains a large amount of lead oxide (>50wt %), can not meet the current demand for lead-free
[0010] The mole percentage of the glass composition disclosed in Japanese Patent No. H7-69672 is: P 2 o

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] According to the composition weight percentage in Table 1 and mix evenly, put the glass frit into the quartz crucible, heat and melt it in the silicon carbon rod electric furnace, add the material in three times, the temperature of the first addition is 1150 ℃, and the temperature of the second addition is It is 1200°C, and the temperature for the third addition is 1170°C. The holding time is different after adding the mixture for different times, and the holding time is 1.5-2.0 hours in total.

[0027] The coefficient of thermal expansion is measured by a WRP-1 microcomputer thermal dilatometer, from room temperature to 300°C, the heating rate is 5°C / min, and the annealed sample is ground into a cylindrical sample of φ5×25mm for measurement; the sealing temperature is determined by The hemispheric experiment was obtained, and the test results are shown in Table 2.

[0028] The melted glass is poured into a tablet press to be pressed into tablets, and then it is ball-mi...

Embodiment 2

[0032] According to the composition weight percentage in Table 1 and mix evenly, put the glass frit into the quartz crucible, heat and melt it in the silicon carbide rod electric furnace, add the material in three times, the temperature of the first addition is 1160°C, and the temperature of the second addition is It is 1200°C, and the temperature for the third addition is 1180°C. The holding time is different after adding the mixture for different times, and the holding time is 1.5-2.0 hours in total.

[0033] The coefficient of thermal expansion is measured by a WRP-1 microcomputer thermal dilatometer, from room temperature to 300°C, the heating rate is 5°C / min, and the annealed sample is ground into a cylindrical sample of φ5×25mm for measurement; the sealing temperature is determined by The hemispheric experiment was obtained, and the test results are shown in Table 2.

[0034] The melted glass is poured into a tablet press to be pressed into tablets, and then it is ball-m...

Embodiment 3

[0036] According to the composition weight percentage in Table 1 and mix evenly, put the glass frit into the quartz crucible, heat and melt it in the silicon carbon rod electric furnace, add the material in three times, the temperature of the first addition is 1150 ℃, and the temperature of the second addition is It is 1200°C, and the temperature for the third addition is 1180°C. The holding time is different after adding the mixture for different times, and the holding time is 1.5-2.0 hours in total.

[0037] The coefficient of thermal expansion is measured by a WRP-1 microcomputer thermal dilatometer, from room temperature to 300°C, the heating rate is 5°C / min, and the annealed sample is ground into a cylindrical sample of φ5×25mm for measurement; the sealing temperature is determined by The hemispheric experiment was obtained, and the test results are shown in Table 2.

[0038] The melted glass is poured into a tablet press to be pressed into tablets, and then it is ball-mi...

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PUM

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Abstract

The invention relates to lead-free glass powder used in refractory glass screen printing ink, the preparation and the application thereof. The components of the glass powder by weight percentage are: 30-50 percent of Bi2O3, 10-50 percent of B2O3, 0-30 percent of ZnO, 0-10 percent of Al 2O3, 0-10 percent of SiO2, 0-10 percent of MgO, 0-6 percent of K2O, 0-6 percent of Na2O and 0-6 percent of Li2O; the preparation is that : each material is weighed and taken according to the weight percentage of each component, and then well mixed, put into a quartz crucible, and put into an electric furnace, and the temperature is preserved. The glass melt is poured into a bead machine to be pressed into thin slices, or poured into cold water, dried, ball ground, screened by a 300 mesh sieve, and finally preserved in dry condition. The glass powder is applied in the printing, the base plate of which is float glass, and can be sealed with glass, ceramic and metal which are at the same temperature and have the same expansion coefficient.

Description

technical field [0001] The invention belongs to the field of lead-free glass powder, in particular to lead-free glass powder for high-temperature-resistant glass screen printing ink. Background technique [0002] The vigorous development of screen printing has led to the rapid development of various new screen printing inks, such as scented inks, fluorescent inks, foaming inks, and fast-curing inks. These inks are generally dried at room temperature. Glass printing and ceramic printing are dried at high temperature. Therefore, high temperature resistant inks often refer to inks for glass and ceramic printing. According to different printing materials and different printing processes, the heat-resistant temperature required by high-temperature-resistant inks is also different. [0003] There are two kinds of inks for screen printing on inorganic glass. One is that after the inorganic pigment is ground to a certain fineness, then adding acrylic ester, the screen printing is ...

Claims

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Application Information

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IPC IPC(8): C03C17/02C03C17/04
Inventor 陈培李胜春夏秀峰贺雅飞
Owner DONGHUA UNIV
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