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A kind of LED low temperature sealing glass containing p2o5

A technology of sealing glass and P2O5, which is applied in the field of sealing glass, can solve problems such as low-temperature sealing and rapid sintering, unsolved environmental protection problems, poor thermal stability, etc., and achieve the effect of low cost, low price and stable process

Inactive Publication Date: 2019-03-12
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Patent application 201310259302.6 discloses a low-temperature lead-free glass powder and its preparation method, but another toxic substance Sb is introduced into the system, which does not solve the environmental protection problem
And patent application 201210366375.0 also discloses lead-free glass material and preparation method thereof, through P 2 o 5 、K 2 O, Na 2 O, ZrO 2 、TiO 2 The composition design of the raw materials and other materials avoids environmental pollution, but the softening temperature range of the glass is 500~600°C, which is difficult to meet the requirements of low temperature sealing, especially the low temperature and rapid sintering of electronic components
At present, some low-temperature glass used for phosphor powder sealing still has poor thermal stability, and it is easy to absorb water and cause device aging.

Method used

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  • A kind of LED low temperature sealing glass containing p2o5
  • A kind of LED low temperature sealing glass containing p2o5
  • A kind of LED low temperature sealing glass containing p2o5

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: Preparation and sealing of materials

[0032] According to the proportioning of each component of embodiment 1 in table 1, take a certain amount of analytically pure raw material (B 2 o 3 、 Bi 2 o 3 , ZnO, P 2 o 5 ), 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 on the part to be sealed, heat up at a rate of 2°C / min in an electric furna...

Embodiment 2

[0033] Embodiment 2: Preparation and sealing of materials

[0034] According to the proportioning of each component of embodiment 2 in table 1, take a certain amount of analytically pure raw material (B 2 o 3 、 Bi 2 o 3 , ZnO, P 2 o 5), 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 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 el...

Embodiment 3

[0035] Embodiment 3: Preparation and sealing of materials

[0036] According to the proportioning of each component of embodiment 3 in table 1, take a certain amount of analytically pure raw material (B 2 o 3 、 Bi 2 o 3 , ZnO, P 2 o 5 ), 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 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 Forming, drying naturally, and then cutting into the embryo body of the desired shape; place the embryo body on the part to be sealed, heat up at a rate of 2°C / m...

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Abstract

The invention discloses LED low-temperature seal glass containing P2O5, and a preparation and use method thereof. The LED low-temperature seal glass consists of the following raw materials of B2O3, Bi2O3, ZnO and P2O5 in a mole ratio of (30-50):(30-50):(5-25):(5-30). As a PO4 tetrahedron is introduced through P2O5, and a BO4 tetrahedron is stabilized, the network stability of the glass is improved, the thermal stability can be further improved, and good stability of the material can be maintained for 1000 hours when the material is put into hot water of 80 DEG C. As B2O3 and Bi2O3 of high concentration are introduced, the mole ratio of 1:1 is maintained, the coordination function of the two components can be brought into play, and the softening temperature of the glass can be reduced to be 380-435 DEG C; due to adoption of ZnO, the thermal expansion coefficient of the glass can be adjusted, and the seal property of the glass can be further improved. The glass disclosed by the invention is applied to the sealing fields of LED fluorescent powder, electronic materials and other low-temperature sealing fields. The glass is simple in raw material preparation, easily in raw material obtaining, stable in process, low in cost, simple and feasible in process, and practical and industrial conditions can be met.

Description

technical field [0001] The invention belongs to the field of sealing glass, in particular to a glass containing P 2 o 5 LED low-temperature sealing glass and its preparation and use method. 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. Since Bi and Pb are adjacent in the periodic table of elements and have similar physical and chemi...

Claims

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Application Information

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IPC IPC(8): C03C8/24
CPCC03C8/24
Inventor 张腾苏鸿斌
Owner FUZHOU UNIV
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