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

Method for pulverizing superfine inorganic powder

An inorganic powder, ultra-fine pulverization technology, applied in the direction of grain processing, etc., can solve the problems of affecting compatibility, viscosity change, poor powder dispersion, etc., and achieve the effect of reducing the drying process

Inactive Publication Date: 2010-06-02
SICHUAN COC DISPLAY DEVICES
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method will in many cases have a negative impact on the final product, because the introduction of additional ball milling media will bond with the powder surface, and the subsequent media removal and drying process is difficult to completely eliminate the bonding effect on the powder. The impact of the surface of the body, which will eventually adversely affect the compatibility between the ultrafine powder and the organic components in the slurry, resulting in changes in viscosity, poor dispersion of the powder in the carrier, etc.

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 pulverizing superfine inorganic powder
  • Method for pulverizing superfine inorganic powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The solid content (inorganic powder content) of the front plate medium slurry for PDP is 60wt%, and it is only composed of glass powder. The organic vehicle contains 10wt% ethyl cellulose, 15wt% butyl carbitol acetate, and 75wt% terpineol. %.

[0024] Weigh Bi with an average particle size of about 200um 2 o 3 -B 2 o 3 -SiO 2 Put 60g of low-glass powder into the front plate medium, put it into a ball mill jar, add 20g of terpineol (no more than 40×75wt%=30g), 4g of butyl carbitol acetate (no more than 40×15wt%=6g) , stir to disperse; then, put in the balls to two-thirds of the volume of the overall ball mill tank, and start ball milling. Then, put 10 g of terpineol, 2 g of butyl carbitol acetate and 4 g of ethyl cellulose into a beaker, heat in a water bath at 70° C., stir, and when the ethyl cellulose is completely dissolved, the organic vehicle is prepared.

[0025] After the glass powder is fully crushed, take out the grinding balls to obtain 80g of slurry (par...

Embodiment 2

[0028] The solid content of the back plate medium slurry for PDP is 65wt%, which is made of glass powder and filler TiO 2 Composition: glass powder accounts for 85 wt% of inorganic components, organic carrier contains 5 wt% of ethyl cellulose, 25 wt% of butyl carbitol acetate, 55 wt% of terpineol, and 15% of dibutyl phthalate.

[0029] Weigh Bi with an average particle size of about 200um 2 o 3 -B 2 o 3 -BaO series low glass powder 50g, put it into the ball mill jar, add 6g of butyl carbitol acetate and 15g of terpineol respectively, stir and disperse; then, put the balls into the ball mill to one-half of the volume of the ball mill jar, Start ball milling. Then, put 2.42g terpineol, 1.92g butyl carbitol acetate, 4.75g dibutyl phthalate and 1.58g ethyl cellulose into a beaker, heat in a water bath at 70°C, stir, and when the ethyl cellulose When the element is completely dissolved, the organic carrier is prepared.

[0030] After the glass powder is fully pulverized, take...

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

PropertyMeasurementUnit
The average particle sizeaaaaaaaaaa
The average particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention provides a method for pulverizing superfine inorganic powder, which is suitable for an organic or inorganic mixed system. The method comprises a step of grinding with a wet method, wherein the inorganic powder and at least a part of the organic solvent or the auxiliary agent used in the system are mixed and grinded in a grinding machine. In the method, a grinding medium is unnecessary to add, thus the surface property of the superfine powder is not negatively influenced. In addition, the materials are unnecessary to dry after pulverizing and can be directly prepared into the slurry as a whole or made into a dry film; because the ball-milling (rod milling) has the dispersing function, the rolling and dispersing steps can be saved after the slurry is prepared, the materials are stirred, mixed and de-foamed and then can be used.

Description

Technical field [0001] The present invention relates to the field of inorganic powder preparation, and specifically to a method for preparing inorganic powder in an organic-inorganic mixed system. Background technique [0002] In the modern electronics industry, new materials such as electronic slurries are environmentally friendly, efficient and energy-saving. They have gradually replaced traditional circuit equipment (such as resistance wires, electric heating tubes, etc.) and are used in electronic products. For example, in the manufacture of plasma displays, materials used to form dielectrics, barriers, and electrodes are usually used in the form of slurry or dry film. The slurry or dry film contains inorganic ultrafine powder with an average particle size of 2 to 4um. For example, low glass powder, etc., and also include organic components, such as organic solvents, polymer resins, additives, etc. [0003] At present, the methods for producing ultrafine powder include ...

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): B02C17/00B02C23/06
Inventor 曹建丁海泉王伟
Owner SICHUAN COC DISPLAY DEVICES
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com