Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for preparing powder of aluminium nitride of resisting hydration, and easy of decentralization

An aluminum nitride and anti-hydration technology, which is applied in the field of material ceramics, can solve the problems of powder anti-hydration performance, powder anti-hydration performance, and inability to effectively disperse, etc., to achieve outstanding water resistance performance and production Low cost, good anti-hydration effect

Inactive Publication Date: 2006-12-06
NANJING UNIV OF TECH
View PDF2 Cites 32 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there have been relevant studies on the hydration resistance of aluminum nitride powder. Gu Mingyuan of Shanghai Jiaotong University et al. proposed to use tetraethoxysilane solution for soaking treatment in "Methods for Preventing Hydrolysis of Aluminum Nitride" (Patent Publication No.: CN1686946A) , improve powder hydration resistance; Chung, Shyan-Lung et al. proposed using oleic acid, epoxy resin, polyurethane resin in "Surfacetreatment method for preparing water-resistant aluminum nitride powder" (US Patent Application No.: 20030118501) Surface modifiers such as surface modifiers are used to treat aluminum nitride powder to improve its anti-hydration performance, but the existing research results show that the anti-hydration performance of the powder is not outstanding, and the powder after anti-hydration treatment is easy to agglomerate in water, so it cannot be effectively Dispersion, and the anti-hydration performance of the powder in the aqueous solution is significantly reduced during the stirring process

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing powder of aluminium nitride of resisting hydration, and easy of decentralization
  • Method for preparing powder of aluminium nitride of resisting hydration, and easy of decentralization
  • Method for preparing powder of aluminium nitride of resisting hydration, and easy of decentralization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1) Soak 85g of aluminum nitride powder and 10g of stearic acid in 100ml of ethanol solution, and keep stirring for 4 hours, then let stand for 1 to 2 hours;

[0029] 2) Add 5 g of Tween 80 to the above mixture, stir and heat in a water bath at 60°C for 5 hours;

[0030] 3) The mixture is filtered, and the filtered aluminum nitride powder is washed with ethanol solution for 3 times;

[0031] 4) Dry the cleaned aluminum nitride powder at 80° C. for 5 hours to obtain aluminum nitride powder with outstanding hydration resistance.

Embodiment 2

[0033] 1) Soak 90g aluminum nitride powder and 5g adipic acid in 200ml acetone solution, stir continuously for 3 hours, then let stand for 2 hours;

[0034] 2) Add 5g of polyoxyethylene oleyl ether type to the above mixture, stir and heat in a water bath at 80°C for 3 hours;

[0035] 3) The mixture is filtered, and the filtered aluminum nitride powder is washed with acetone solution for 4 times;

[0036] 4) Dry the cleaned aluminum nitride powder at 100° C. for 2 hours to obtain aluminum nitride powder with outstanding hydration resistance.

Embodiment 3

[0038] 1) soak 85g of aluminum nitride powder and 12g of stearic acid in 200ml of ether solution, and keep stirring for 4 hours, then let stand for 2 hours;

[0039] 2) Add 3g of ethoxylated methyl glucoside stearate to the above mixture, stir and heat in a water bath at 70°C for 3 hours;

[0040] 3) The mixture is filtered, and the filtered aluminum nitride powder is washed 4 times with ether solution;

[0041] 4) Dry the cleaned aluminum nitride powder at 80° C. for 4 hours to obtain aluminum nitride powder with outstanding hydration resistance.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

This invention relates to a method for improving the anti-hydration property of AlN powder. The method comprises: (1) mixing AlN powder with organic carboxylic acid in an organic solvent so that the surface of AlN powder is adsorbed with a layer of organic carboxylic acid; (2) adding a nonionic surfactant, and heating in 60-80 deg.C water bath under continuous stirring; (3) washing with ethanol solution for several times, and drying at 80-100 deg.C to obtain the final product. The method has such advantage as easy operation, and the product has high anti-hydration property.

Description

technical field [0001] The invention relates to a method for improving the hydration resistance of aluminum nitride powder, which can effectively prevent the hydrolysis of aluminum nitride powder and prepare nitrogen in aqueous solution without affecting the original performance of aluminum nitride powder. The aluminum oxide slurry belongs to the technical field of material ceramics. Background technique [0002] Because of its high thermal conductivity (the theoretical value of single crystal is 320W / m.k, the actual value can still reach 100-280W / m.k, equivalent to 5-10 times that of alumina), high strength, high volume resistivity, Excellent characteristics such as high insulation withstand voltage, low dielectric loss, and thermal expansion coefficient matching with silicon have become the most promising new generation of high thermal conductivity ceramic electronic substrates and packaging materials. Therefore, the development of aluminum nitride ceramics will have a re...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C01F7/02
Inventor 姚义俊丘泰沈春英李晓云杨建
Owner NANJING UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com