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Preparation method of glass ceramic with good thermal conductivity

A glass ceramic, thermal conductivity technology, applied in glass manufacturing equipment, glass molding, manufacturing tools, etc., can solve problems such as poor thermal conductivity, and achieve the effects of low dielectric constant, low sintering temperature, and high atomic magnetic moment.

Pending Publication Date: 2019-11-12
黄兰英
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] Technical problem to be solved by the present invention: Aiming at the problem of poor thermal conductivity of existing glass ceramics, a preparation method of glass ceramics with good thermal conductivity is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Mix alumina fibers and N, N-dimethylformamide at a mass ratio of 1:5, and ultrasonically disperse them for 2 hours at an ultrasonic power of 250W to obtain a dispersion. Mix the dispersion with diphenyl Mix methane diisocyanate, in a nitrogen atmosphere, ultrasonically react at a temperature of 100°C for 20 hours, then filter with suction to obtain a filter residue, wash the filter residue with deionized water for 3 times, and dry it in an oven at a temperature of 60°C until constant Mix the modified fiber with bisphenol A epoxy resin E-51 at a mass ratio of 1:5, stir for 5 minutes at a stirring speed of 500 r / min, and then ultrasonically disperse for 20 minutes , to obtain modified epoxy resin; by weight, respectively weigh 40 parts of 100 mesh waste glass powder, 20 parts of silicon dioxide, 5 parts of aluminum nitride, 1 part of diamond, 5 parts of copper powder, 30 parts of 100 Mesh waste ceramic powder, 1 part of lanthanum oxide, 40 parts of modified epoxy resin, 1...

Embodiment 2

[0037] Mix alumina fibers and N, N-dimethylformamide at a mass ratio of 1:5, and ultrasonically disperse them for 2 hours at an ultrasonic power of 275W to obtain a dispersion. Mix the dispersion with diphenyl Mix methane diisocyanate, in a nitrogen atmosphere, ultrasonically react at a temperature of 105°C for 22 hours, then suction filter to obtain a filter residue, wash the filter residue 4 times with deionized water, and dry it in an oven at a temperature of 70°C until constant Mix the modified fiber with bisphenol A epoxy resin E-51 at a mass ratio of 1:5, stir for 8 minutes at a stirring speed of 550 r / min, and then ultrasonically disperse for 25 minutes , to obtain modified epoxy resin; by weight, respectively weigh 45 parts of 110 mesh waste glass powder, 25 parts of silicon dioxide, 10 parts of aluminum nitride, 3 parts of diamond, 8 parts of copper powder, 35 parts of 110 Mesh waste ceramic powder, 5 parts of lanthanum oxide, 50 parts of modified epoxy resin, 3 parts...

Embodiment 3

[0039] Mix alumina fibers and N,N-dimethylformamide at a mass ratio of 1:5, and ultrasonically disperse them for 3 hours at an ultrasonic power of 300W to obtain a dispersion. Mix the dispersion with diphenyl Mix methane diisocyanate, in a nitrogen atmosphere, ultrasonically react at a temperature of 110°C for 24 hours, then filter with suction to obtain a filter residue, wash the filter residue 5 times with deionized water, and dry it in an oven at a temperature of 80°C until constant Mix the modified fiber with bisphenol A epoxy resin E-51 at a mass ratio of 1:5, stir for 10 minutes at a stirring speed of 600 r / min, and then ultrasonically disperse for 30 minutes , to obtain modified epoxy resin; by weight, respectively weigh 50 parts of 120 mesh waste glass powder, 30 parts of silicon dioxide, 15 parts of aluminum nitride, 5 parts of diamond, 10 parts of copper powder, 40 parts of 120 Mesh waste ceramic powder, 10 parts of lanthanum oxide, 60 parts of modified epoxy resin, ...

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Abstract

The invention relates to a preparation method of glass ceramic with good thermal conductivity, and belongs to the technical field of glass ceramic materials. According to the invention, waste glass powder and silicon dioxide are used as raw materials, alumina fiber toughening-modified epoxy resin is used as a binder, and aluminum nitride, diamond, copper powder and waste ceramic powder with high thermal conductivity are used as fillers, and the glass ceramic with good thermal conductivity is prepared by doping rare earth lanthanum oxide through low-temperature co-firing. The diamond has high thermal conductivity, low dielectric constant, high resistivity and high breakdown field intensity; the aluminum nitride has excellent electrical properties and thermal properties, is a good thermal shock resistant material, has strong molten metal erosion resistance, is also an electrical insulator, and has good dielectric properties. By means of the low-temperature co-firing process, the preparation method is low in sintering temperature, low in dielectric constant and short in signal delay time; the glass serves as a fluxing agent to promote densification of the glass-ceramic composite material; in addition, the ceramic filler is used for improving the mechanical strength and insulativity of the substrate and preventing warping caused by the surface tension of the glass during sintering.

Description

technical field [0001] The invention relates to a method for preparing glass ceramics with good thermal conductivity, and belongs to the technical field of glass ceramic materials. Background technique [0002] Glass ceramics, also known as glass-ceramic, is a kind of polycrystalline solid material containing a large number of microcrystalline phases and glass phases, which is obtained by controlling the crystallization of a specific composition of basic glass during the heating process. Glass is an amorphous solid. From a thermodynamic point of view, it is a metastable state with higher internal energy than the crystalline state. Under certain conditions, it can be transformed into a crystalline state. Glass ceramics are new materials obtained by people who can make full use of the favorable conditions of glass in thermodynamics. [0003] The reason why glass ceramics can become a unique new type of material is that it has both the basic properties of glass and the polycry...

Claims

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Application Information

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IPC IPC(8): C03C10/00C03C6/04C03C1/02C03C4/00C03B19/06
CPCC03B19/06C03C1/002C03C1/02C03C4/00C03C10/0063
Inventor 丁正颖
Owner 黄兰英
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