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Substrate and preparation method thereof

A substrate, porous glass ceramic technology, applied in the direction of circuit substrate materials, printed circuit components, etc., can solve problems such as limited effect, and achieve the effect of low dielectric constant, reduced loss, and wide application

Active Publication Date: 2013-09-11
KUANG CHI INST OF ADVANCED TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the research of low dielectric glass / ceramics mainly focuses on finding materials with low dielectric constant characteristics, but the effect is limited. The dielectric constant of glass-ceramic with the lowest dielectric constant is about 5, and it is necessary to further reduce the dielectric constant. The electrical constant meets the current requirements for the use of low dielectric materials in various fields, especially in the field of metamaterials

Method used

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  • Substrate and preparation method thereof

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preparation example Construction

[0028] A method for preparing a substrate, such as figure 1 As shown, the steps of the method include:

[0029] a, preparing porous glass-ceramic material and grinding it into powder;

[0030] b. modifying the powdered porous glass-ceramic material;

[0031] c. Mixing the modified porous glass-ceramic material with a polymer material and removing the solvent to obtain a porous glass-ceramic polymer composite material;

[0032] d. Making the porous glass-ceramic-polymer composite material into a substrate on a mould.

[0033] Said step a comprises: by weight ratio 25.1%~33.2% CaO, 6.3%~12.1% B 2 o 3 and 55.4% to 65.3% SiO 2 Put it in a ball mill and grind it evenly, then press it into tablets, then heat it up to 900°C in a roasting furnace at a rate of 5-10°C, keep it warm at 900°C, cool to room temperature, and then grind it into powder.

[0034] The step b includes: placing the porous glass-ceramic material powder in a beaker, adding silane coupling agent and ethanol, w...

Embodiment 1

[0038] 30.1% CaO, 8.3% B by weight 2 o 3 and 61.6% SiO 2 Put it in a ball mill and grind it evenly, then press it into tablets, then heat it up to 900°C at a rate of 5°C in a roasting furnace, keep it at 900°C for 3 hours, cool to room temperature, and then grind it into powder.

[0039] The porous glass-ceramic material powder is placed in a beaker, and silane coupling agent and ethanol are added, wherein the weight ratio of the silane coupling agent porous glass-ceramic material powder is 1:100, and the volume ratio of ethanol to the porous glass-ceramic material powder is The ratio is 80:1, and then the modified porous glass-ceramic material is obtained after ultrasonic dispersion, heating and stirring, centrifugation and washing.

[0040] Place the beaker on the stirrer, add toluene and polymer material and heat to 100°C, add the modified porous glass ceramic material while stirring to form a mixed solution, wherein the volume ratio of toluene to polymer material is 100:...

Embodiment 2

[0044] 29.3% CaO, 9.3% B by weight 2 o 3 and 61.4% SiO 2 Put it in a ball mill and grind it evenly, then press it into tablets, then heat it up to 900°C at a rate of 8°C in a roasting furnace, keep it at 900°C for 3 hours, cool to room temperature, and then grind it into powder.

[0045] The porous glass-ceramic material powder is placed in a beaker, and silane coupling agent and ethanol are added, wherein the weight ratio of the silane coupling agent porous glass-ceramic material powder is 1.1:95, and the volume ratio of ethanol to the porous glass-ceramic material powder is The ratio is 90:1, and then the modified porous glass-ceramic material is obtained after ultrasonic dispersion, heating and stirring, centrifugation and washing.

[0046] Place the beaker on the stirrer, add toluene and polymer material and heat to 100°C, add the modified porous glass ceramic material while stirring to form a mixed solution, wherein the volume ratio of toluene to polymer material is 130...

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Abstract

The invention relates to the field of a material substrate and provides a substrate and a preparation method thereof. The dielectric constant of a porous glass ceramic material prepared from CaO-B2O3-SiO2-series glass ceramic by means of sintering can be reduced to 2-3, and simultaneously the loss can be reduced by 30%; furthermore, the preparation method is scientific, reasonable, simple and easy to implement; and a low-dielectric constant and low-loss substrate prepared by the porous glass ceramic material satisfies the requirements of a super-material substrate on dielectric constant and loss and can be widely applied to the field of electromagnetic materials.

Description

technical field [0001] The invention relates to the field of circuit substrates, in particular to a substrate and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of modern communication technologies such as mobile communication, satellite communication, global satellite positioning system (GPS), Bluetooth technology, and wireless local area network (WLAN), microwave technology is also moving towards higher frequencies, that is, towards millimeter waves and submillimeters. direction of the wave. Research on low dielectric constant microwave dielectric ceramic materials has attracted more and more attention. Such materials can be widely used in satellite communications, missile remote control and global satellite positioning system (GPS) antennas, communication equipment, etc. In addition to requiring ceramics to have low dielectric loss and low resonant frequency temperature coefficient, these applications also require ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/12C08L25/06C08L33/12C08L27/06C08L69/00C08L75/04C08L27/18C08L67/02C08K9/06C08K7/28H05K1/03
Inventor 刘若鹏季春霖岳玉涛林云燕
Owner KUANG CHI INST OF ADVANCED TECH
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