Resin Particle Surface Functionalization via Water-Soluble Mediator
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Solution Overview
Problem
Existing methods for producing resin particles fail to efficiently impart desired functions or activities to the surface of resin particles in a simple and easy manner.
Innovation Solution
A method involving the use of a thermoplastic resin with specific functional groups, such as acidic groups, is employed to create a core-shell structure with inorganic particles, where the thermoplastic resin forms the core and the inorganic particles form a shell, allowing for efficient immobilization of filler particles on the surface of resin particles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional methods are used to produce resin particles with inorganic pigment, then the production process becomes complex and difficult, but the desired function or activity cannot be efficiently imparted to the surface of resin particles
Solution Approach 1:
A water-soluble polymer is used as an intermediary medium to disperse both the thermoplastic resin and inorganic pigment particles uniformly. This mediator enables simple mixing and processing while ensuring efficient distribution of functional inorganic particles on the resin particle surfaces after the water-soluble polymer is removed.
Solution Approach 2:
The invention changes the physical state and solubility parameters by using a water-soluble polymer as a temporary dispersing medium during production, then removing it to leave behind resin particles with efficiently distributed inorganic pigment. This parameter change enables simple processing while achieving high functional efficiency.
2Ease of manufacture
If conventional mixing methods are used to combine inorganic pigment with resin, then the process is simple, but the inorganic pigment is not efficiently immobilized on the surface of resin particles
Solution Approach 1:
The water-soluble polymer acts as a mediator that facilitates uniform dispersion and intimate contact between the inorganic pigment particles and thermoplastic resin during the melting and mixing process. This intermediary enables reliable immobilization of pigment on particle surfaces while maintaining process simplicity.
Solution Approach 2:
The invention creates a composite system during production where the water-soluble polymer, thermoplastic resin, and inorganic pigment form a temporary composite mixture that can be easily processed. After removal of the water-soluble polymer, the result is a reliable composite structure with inorganic pigment firmly attached to resin particle surfaces.
3Device complexity
If inorganic pigment is compounded into resin material before powdering, then the structure becomes complex, but the resulting particles do not exhibit high-value-added functions effectively
Solution Approach 1:
The water-soluble polymer is extracted from the final product after serving its purpose as a dispersing medium during production. This extraction leaves behind simple resin particles with inorganic pigment efficiently distributed on their surfaces, achieving high-value-added functions without unnecessary structural complexity.
Solution Approach 2:
The invention segments the production process into distinct stages: (1) formation of resin particles with inorganic pigment dispersed on surfaces during melting and mixing, (2) removal of water-soluble polymer, and (3) drying to obtain final particles. This segmentation achieves efficient functional distribution while maintaining structural simplicity.
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 enables the simple and efficient production of resin particles with desired properties, such as insulating, strength-enhancing, flame-resistant, electroconductive, and antimicrobial properties, suitable for various applications including cosmetics and coatings.
Implementation Method 1
the thermoplastic resin having a specific functional group satisfactorily interacts with the surface of the inorganic particles to give the core-shell structure
Implementation Method 2
the resin composition includes a matrix and resin fine particles dispersed in the matrix
Implementation Method 3
removing the matrix component from the resin composition to give the resin particles
Data Source
AI summary
Disclosed is a method for producing resin particles, which can impart a desired function to the surface of resin particles efficiently and simply. Also disclosed are resin particles produced by the method.The method produces resin particles by melting and mixing an acidic-group-containing thermoplastic resin or elastomer with filler particles and a water-soluble material to give a resin composition containing resin fine particles formed by the thermoplastic resin and the filler particles and dispersed in a matrix including the water-soluble material; and removing the matrix component from the resin composition, to give the resin particles. The resulting resin particles each include a core particle including the acidic-group-containing thermoplastic resin or elastomer, and the filler particles immobilized on the outside of the core particle. The acidic group is preferably carboxyl group or carboxylic anhydride group.