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Lead-free sealing glass powder with spectral selective absorption characteristics and its manufacturing method

A technology for absorbing and sealing glass, applied in the field of lead-free sealing glass powder and its manufacturing, can solve the problems of slow heating speed, large heating area, and the overall temperature of the sealed object, and achieves low sealing temperature, Appropriate expansion coefficient, easy to prepare effect

Active Publication Date: 2016-11-30
CHINA BUILDING MATERIALS ACAD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When it is used in the light radiation heating sealing process, a series of problems such as slow heating speed, large heating area, and overall temperature rise of the sealed object are prone to occur.

Method used

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  • Lead-free sealing glass powder with spectral selective absorption characteristics and its manufacturing method
  • Lead-free sealing glass powder with spectral selective absorption characteristics and its manufacturing method
  • Lead-free sealing glass powder with spectral selective absorption characteristics and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A method for manufacturing a lead-free sealing glass frit with spectrally selective absorption characteristics:

[0038] Step 101: According to the composition of Example 1 in Table 1, that is, the composition of the basic components and rare earth oxides and transition metal oxides, weigh various oxide raw materials and / or compounds corresponding to the oxides, and mix them thoroughly to prepare Mixture; wherein, boron oxide, lithium oxide, potassium oxide, sodium oxide, calcium oxide, strontium oxide, barium oxide and silver oxide select their corresponding compounds, and the weight parts of the corresponding compounds are the corresponding parts by weight;

[0039] Step 102: melting the mixture obtained in step 101 at 1200°C for 3 hours to obtain a molten liquid of the mixture;

[0040] Step 103: Cool the molten liquid of the mixed material obtained in step 102 on an iron plate, crush and grind the cooled glass pieces, and pass through a 200-mesh sieve to obtain mat...

Embodiment 2

[0051] A method for manufacturing a lead-free sealing glass frit with spectrally selective absorption characteristics:

[0052] Step 101: According to the second component in Table 1, that is, the composition of the basic component and rare earth oxide and transition metal oxide, weigh various oxide raw materials and / or compounds corresponding to the oxide, and mix them thoroughly to prepare Mixture; wherein, boron oxide, lithium oxide, potassium oxide, sodium oxide, calcium oxide, strontium oxide, barium oxide and silver oxide select their corresponding compounds, and the weight parts of the corresponding compounds are the corresponding parts by weight;

[0053] Step 102: melting the mixture obtained in step 101 at 900°C for 1 hour to obtain a molten liquid of the mixture;

[0054] Step 103: Cool the molten liquid of the mixed material obtained in step 102 on an iron plate, crush and grind the cooled glass pieces, and pass through a 200-mesh sieve to obtain matrix glass powd...

Embodiment 3

[0065] A method for manufacturing a lead-free sealing glass frit with spectrally selective absorption characteristics:

[0066] Step 101: According to the components of Example 3 in Table 1, that is, the composition of the basic components, weigh various oxide raw materials and / or compounds corresponding to the oxides, and mix them thoroughly to make a mixture; wherein, boron oxide is selected from The corresponding compound, the weight part of the corresponding compound is the corresponding weight part converted according to the oxide content; Weigh various oxide raw materials and / or oxide corresponding compounds, fully mix, and make a mixture;

[0067] Step 102: melting the mixture obtained in step 101 at 800°C for 0.5 hour to obtain a molten liquid of the mixture;

[0068] Step 103: cooling the molten liquid of the mixture obtained in step 102 on an iron plate, crushing and grinding the cooled glass pieces, and passing through a 300-mesh sieve to obtain matrix glass powder;...

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Abstract

The invention discloses a lead-free sealing glass powder with spectral selective absorption characteristics and a preparation method thereof. The base component is a lead-free low-temperature sealing glass system, and the base component is added with a Glasses yield spectrally selective absorption properties of rare earth oxides and transition metal oxides. The weight fraction ratio between the total amount of basic components in the lead-free sealing glass and the total amount of the rare earth and transition metal oxides is 100:0.1-20.0. The lead-free sealing glass frit prepared according to the method of the present invention has spectral selective absorption characteristics, is suitable for the optical radiation heating and sealing process where the heating source is ultraviolet, visible or infrared light, and can be used for electric vacuum devices and electronic components Or vacuum glass insulation sealing or airtight sealing; at the same time, sealing glass also has the advantages of low sealing temperature, good chemical stability, appropriate expansion coefficient, easy preparation, and continuous large-scale industrial production.

Description

technical field [0001] The invention relates to the technical field of glass production, in particular to a lead-free sealing glass powder with spectral selective absorption characteristics and a manufacturing method thereof. Background technique [0002] Electronic components, electric vacuum devices or vacuum components often use lead-free sealing glass frit to make insulation seal or airtight seal, usually electric heating element is used as heat source, and heat transfer is mainly convection. This method has disadvantages such as long heating time, slow sealing process, high energy consumption, and low production efficiency. In particular, the sealed object needs to be heated to the glass frit sealing temperature to complete the sealing, which makes it subject to limit. For example: OLED displays need to use sealing glass powder to form an airtight seal between two substrates during manufacture, and the sealing temperature is about 400-450°C. However, the temperature o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C8/24
Inventor 黄幼榕李要辉王晋珍汪洪
Owner CHINA BUILDING MATERIALS ACAD
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