Oxide Microparticle Dispersibility via Chemical Separation
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Solution Overview
Problem
Existing methods for producing oxide and hydroxide microparticles often result in poor dispersibility due to strong agglomeration, which affects their semiconductor properties, transparency, and durability, and there is a lack of effective methods for improving their dispersibility.
Innovation Solution
A method involving a fluid containing a microparticle raw material solution and a microparticle-separating solution being mixed between rotating processing surfaces to form a thin film fluid, followed by the introduction of a microparticle-treating substance solution, specifically an acidic substance or hydrogen peroxide, to enhance the dispersibility of the separated microparticles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If oxide microparticles are produced by calcination, then they can be obtained through a standard production method, but they form strong bound agglomeration of primary particles resulting in poor dispersibility
Solution Approach 1:
The patent applies preliminary action by introducing a microparticle-separating solution before the final product formation to prevent agglomeration from occurring in the first place. The separating solution is mixed with the microparticle raw material solution before calcination, creating a system where particles remain isolated during the production process itself, rather than requiring subsequent separation steps.
Solution Approach 2:
The patent uses a microparticle-separating solution as an intermediary substance that mediates between the microparticle raw material solution and the final oxide microparticles. This separating solution acts as a medium that prevents direct agglomeration of primary particles during calcination, enabling better dispersibility in the final product.
2Manufacturing precision
If mechanical grinding or crushing is used to improve dispersibility, then particle separation can be achieved, but high energy consumption and complex equipment are required
Solution Approach 1:
The patent replaces mechanical grinding and crushing systems with a chemical solution-based approach. Instead of using ball mills, bead mills, or other mechanical devices that consume significant energy, the invention uses a microparticle-separating solution that chemically prevents agglomeration during calcination, achieving dispersibility without mechanical intervention.
Solution Approach 2:
The patent changes the chemical parameters of the production system by introducing a microparticle-separating solution with specific chemical properties. This solution modifies the chemical environment during calcination to prevent particle aggregation, thereby achieving better dispersibility through parameter modification rather than mechanical force.
3Manufacturing precision
If mechanical grinding or crushing is used to separate particles, then dispersibility can be improved, but the process becomes more complex and costly
Solution Approach 1:
The patent eliminates complex mechanical equipment such as ball mills, bead mills, and other grinding devices by substituting them with a simple chemical solution mixing process. The microparticle-separating solution is introduced and mixed with the raw material solution, and the separation function is achieved through this chemical interaction rather than mechanical device complexity.
4Productivity
If oxide particles are produced by conventional methods, then production can proceed with standard processes, but the particles exhibit strong crystal forces affecting semiconductor properties and durability
Solution Approach 1:
The patent applies preliminary action by introducing the microparticle-separating solution before calcination to modify the crystal formation process itself. This preliminary intervention prevents strong crystal forces from developing during particle formation, thereby preserving semiconductor properties and durability while maintaining production efficiency.
Solution Approach 2:
The microparticle-separating solution serves as an intermediary that mediates the crystal formation process. It interacts with the microparticle raw material solution during calcination to control crystal growth and prevent excessive crystal forces, thereby maintaining reliability of semiconductor properties while allowing continuous production.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method allows for the production of isolatable oxide and hydroxide microparticles with improved dispersibility, achieved at lower energy and cost, enabling their stable and cost-effective provision.
Implementation Method 1
a fluid which contains a microparticle raw material solution obtained by mixing a microparticle raw material with a solvent is mixed with a fluid which contains a microparticle-separating solution between at least two processing surfaces which are disposed in a position they are faced with each other so as to be able to approach to and separate from each other
Implementation Method 2
at least one of which rotates relative to the other, thereby separating oxide microparticles or hydroxide microparticles
Implementation Method 3
a dispersion solution of the separated oxide microparticles or hydroxide microparticles is mixed with a fluid which contains a microparticle-treating substance solution obtained by mixing a microparticle-treating substance with a solvent, wherein the microparticle-treating substance is a substance which controls dispersibility
Implementation Method 4
the microparticle-treating substance is an acidic substance or hydrogen peroxide
Data Source
Figure 1
Figure 2(A)~2(B)
Figure 3(A)~3(B)
AI summary
A method for producing isolatable oxide microparticles or hydroxide microparticles using an apparatus that processes a fluid between processing surfaces of processing members that are arranged opposite each other so as to be able to approach to or separate from each other and such that at least one can rotate relative to the other. Using an apparatus that processes a fluid between processing surfaces (1 and 2) of processing members (10 and 20) that are arranged opposite each other so as to be able to approach to or separate from each other and such that at least one can rotate relative to the other, at least two fluids are mixed and oxide microparticles or hydroxide microparticles are separated, said two fluids including: a fluid containing a microparticle raw material solution comprising a microparticle raw material mixed into a solvent, and a fluid containing a microparticle-separation solution. Immediately thereafter, the following are mixed to obtain isolatable oxide microparticles or hydroxide microparticles: a fluid containing the separated oxide microparticles or hydroxide microparticles; and a fluid containing a microparticle-treatment-substance-containing solution that contains a microparticle-treatment substance that adjusts the dispersibility of the separated oxide microparticles or hydroxide microparticles.