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Low-melting-point glass powder and preparation method thereof

A low-melting point glass and glass powder technology, which is applied in the preparation of the low-melting point glass powder, in the field of low-melting point glass powder, can solve the problem of narrow application range of lead-free bismuth salt glass powder

Inactive Publication Date: 2018-03-27
苏州赶集科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still toxic elements such as vanadium in the glass powder, and the expansion coefficient range is small, which leads to a narrow application range of the lead-free bismuth salt glass powder

Method used

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  • Low-melting-point glass powder and preparation method thereof
  • Low-melting-point glass powder and preparation method thereof
  • Low-melting-point glass powder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Weigh 20 parts of Bi according to the unit mass 2 o 3 , 30 parts of ZnO, 45 parts of B 2 o 3 , 0.5 parts of MgO, 4.5 parts of Al 2 o 3 , They were melted in a lifting furnace at 1100°C, cooled and ball-milled into primary glass powder, and then prepared into nano-glass powder by freezing and grinding. The particle size of the glass powder is 150nm to 450nm.

Embodiment 2

[0030] Weigh 30 parts of Bi according to the unit mass 2 o 3 , 30 parts of ZnO, 45 parts of B 2 o 3 , 0.5 parts of MgO, 3.5 parts of Al 2 o 3 , they were smelted in a lifting furnace at 1100°C, cooled and ball-milled into primary glass powder, and then 0.5 parts of colorant and aluminum titanate accounting for 10% of the total mass percentage of glass powder were added, wherein the colorant was Fe with a mass ratio of 5:1 3 o 4 / carbon powder mixture, and finally prepare nano glass powder by freezing and grinding, and the particle size of the glass powder is 150nm-450nm. figure 2 It is the particle size chart of the glass powder after freezing and grinding. image 3 It is a comparison chart of light absorption intensity between Example 1 and Example 2. Curve A corresponds to Example 1, and Curve B corresponds to Example 2. After adding a colorant, the light absorption ability is greatly improved.

Embodiment 3

[0032] Weigh 40 parts of Bi according to the unit mass 2 o 3 , 20 parts of ZnO, 35 parts of B 2 o 3 , 1 part of MgO, 3 parts of Al 2 o 3 , they were smelted in a lifting furnace at 1100°C, cooled and ball-milled into primary glass powder, and then 0.5 parts of colorant and aluminum titanate accounting for 20% of the total mass percentage of glass powder were added, wherein the colorant was Fe with a mass ratio of 8:1 3 o 4 / carbon powder mixture, and finally prepare nano glass powder by freezing and grinding, and the particle size of the glass powder is 50nm-150nm.

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Abstract

The invention discloses low-melting-point glass powder, which is prepared from the following components in parts by weight: 20 to 60 parts of Bi2O3, 10 to 30 parts of ZnO, 25 to 45 parts of B2O3, 0.5to 2 parts of MgO, 2 to 4.5 parts of Al2O3, 0.5 to 2 parts of coloring agent, and a filler which is not more than 40 percent of the total weight of the glass powder. The coloring agent is one or a mixture of any two and three of Fe3O4, Ni2O3 and Co2O3; by introducing the coloring agent, a light absorption capacity of the glass powder can be improved, direct packaging in an infrared heating furnacecan be realized due to the high-efficient photo-thermal conversion rate, and the low-melting-point glass powder does not need to be added with substances containing harmful elements such as lead, vanadium, thallium and tellurium. The invention also provides a preparation method. The particle size of the glass powder prepared by utilizing the method can achieve a nanometer grade.

Description

technical field [0001] The invention belongs to the technical field of packaging materials, and relates to a low-melting-point glass powder, and also relates to a preparation method of the low-melting-point glass powder. Background technique [0002] Low-temperature sealing glass refers to the interlayer glass that seals glass, ceramics, metal and composite materials with each other. Its melting point is significantly lower than that of ordinary glass. It is widely used in electric vacuum and microelectronics technology, laser and Infrared technology, aerospace and automotive and many other fields. Most of the traditional low-temperature glass powders contain toxic substances such as lead and arsenic, which are harmful to the environment and human health. Therefore, relevant technical personnel have developed a series of lead-free glass powders. [0003] Such as: the well-known Bi for bonding electronic ceramics 2 o 3 -B 2 o 3 - lead-free bismuth salt glass powder of Zn...

Claims

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Application Information

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IPC IPC(8): C03C8/24C03C12/00
CPCC03C8/24C03C12/00
Inventor 张洪灿蔡诗端祝晓钊
Owner 苏州赶集科技有限公司
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