CeO2 modified low-temperature sealing glass as well as preparation method and application method thereof

A technology of sealing glass and low temperature, which is applied in the field of sealing glass, can solve the problems of limited optical performance of glass, difficult to control sealing, and low light transmittance, so as to avoid overflow of blue light and ultraviolet light, stable process, The effect of easy access to raw materials

Inactive Publication Date: 2017-07-14
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the boron-bismuth-zinc system glass contains variable-valent ions Bi, the color of the glass becomes darker during the sintering process, which makes the light transmittance of the glass in the visible light band lower, and the boron-bismuth-zinc system glass is easy to devitrify, and the glass is easily devitrified during the sealing process. hard to control
Therefore, boron-bismuth-zinc system glasses are relatively limited in terms of optical performance.

Method used

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  • CeO2 modified low-temperature sealing glass as well as preparation method and application method thereof
  • CeO2 modified low-temperature sealing glass as well as preparation method and application method thereof
  • CeO2 modified low-temperature sealing glass as well as preparation method and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1: Preparation and sealing of materials

[0035] According to the proportioning of each component of Example 1 in Table 1, a certain amount of analytically pure raw materials (ZnO, Na 2 O.P 2 o 5 , CeO 2 ), use a planetary ball mill for 24 hours to mix evenly; then put the powder into a platinum crucible, place it in the air atmosphere of a box-type resistance furnace, heat it to 900°C at 3°C / min, and keep it warm for 1 hour; then, take out the crucible, Pour the melt into deionized water for rapid cooling, and dry to obtain fragments of glass melt; grind and pass through a 100-mesh sieve to obtain glass powder. Mix glass powder with polyvinyl alcohol, fish oil, ethanol and toluene (80%, 2%, 1%, 10%, 7% by weight) to form a slurry, and disperse evenly in a ball mill; tape casting, natural Dry, then cut into the embryo body of the desired shape; place the embryo body at the part to be sealed, heat up at a rate of 2°C / min in an electric furnace, keep it at ...

Embodiment 2

[0036] Embodiment 2: Preparation and sealing of materials

[0037] According to the proportioning of each component of Example 2 in Table 1, a certain amount of analytically pure raw materials (ZnO, Na 2 O.P 2 o 5 , CeO 2), use a planetary ball mill for 24 hours to mix evenly; then put the powder into a platinum crucible, place it in the air atmosphere of a box-type resistance furnace, heat it to 950°C at 3°C / min, and keep it warm for 1 hour; then, take out the crucible, Pour the melt into deionized water for rapid cooling, and dry to obtain fragments of glass melt; grind and pass through a 100-mesh sieve to obtain glass powder. Mix glass powder with methylcellulose, polyvinyl alcohol, n-butanol and acetone (82%, 2%, 2%, 8%, 6% by weight) to form a slurry, and disperse evenly in a ball mill; Stretching, drying naturally, and then cutting the embryo body into the desired shape; placing the embryo body on the part to be sealed, raising the temperature in an electric furnace ...

Embodiment 3

[0038] Embodiment 3: Preparation and sealing of materials

[0039] According to the proportioning of each component of Example 3 in Table 1, a certain amount of analytically pure raw materials (ZnO, Na 2 O.P 2 o 5 , CeO 2 ), use a planetary ball mill for 24 hours to mix evenly; then put the powder into a platinum crucible, place it in the air atmosphere of a box-type resistance furnace, heat it to 1000°C at 3°C / min, and keep it warm for 1 hour; then, take out the crucible, Pour the melt into deionized water for rapid cooling, and dry to obtain fragments of glass melt; grind and pass through a 100-mesh sieve to obtain glass powder. Mix glass powder with epoxy resin, polyacrylamide, isopropanol and toluene (84%, 1.5%, 0.5%, 9%, 5% by weight) to form a slurry, and disperse evenly in a ball mill; casting Shaping, drying naturally, and then cutting into the desired shape of the embryo body; place the embryo body on the part to be sealed, heat up at a rate of 2°C / min in an elect...

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Abstract

The invention discloses CeO2 modified low-temperature sealing glass as well as preparation method and an application method thereof. The CeO2 modified low-temperature sealing glass comprises the raw materials of ZnO, Na2O, P2O5 and CeO2 in a molar ratio of (33-45) to (15-25) to (22-40) to (5-25). By introducing CeO2, the glass can absorb blue light and effectively avoid overflow of blue light and ultraviolet light; high concentration CeO2 can enhance a glass network and improve the thermal stability thereof. The material is placed in hot water at 80 DEG C for 1000 hours, and good stability of the glass can be kept; by introducing high concentration ZnO and P2O5, a coordinating function of ZnO and P2O5 is exerted, so that the transition temperature range of the glass is reduced to 350-425 DEG C; Na2O can reduce the melting temperature of the glass, and can further improve the sealing property of the glass. The glass disclosed by the invention is suitable for the fields of LED fluorescent powder sealing, electronic material and other low-temperature sealing. The preparation raw materials are simple and easily available, the process is stable, and practical and industrial conditions are met.

Description

technical field [0001] The invention belongs to the field of sealing glass, in particular to a CeO 2 Modified low-temperature sealing glass and methods of making and using the same. Background technique [0002] Low-temperature sealing glass (sealing temperature <600°C), due to its good heat resistance, chemical stability, and high mechanical strength, is widely used in electronic paste, electric vacuum and microelectronics technology, energy, aerospace, automobiles, etc. Fields, such as phosphor sealing in light-emitting diodes (LEDs), the performance of the sealing material directly leads to the actual performance of the battery. Sealing glass can also be used for mutual sealing between glass, ceramics, metals, and semiconductors. However, currently domestic and foreign research generally uses sealing materials containing Pb, which will pollute the environment. In addition, phosphate glass has gained widespread attention due to its advantages such as low melting temp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C8/24
CPCC03C8/24
Inventor 张腾苏鸿斌
Owner FUZHOU UNIV
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