Polyether Polymer Composition with Oxirane Cationic Groups for Conductive Fillers
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Solution Overview
Problem
Conductive polymer compositions, such as heat conductive sheets and electrically conductive inks, face issues with filler dispersibility and agglomeration over time, leading to decreased heat and electrical conductivity performance.
Innovation Solution
A polyether polymer composition with a high content of metal-containing powders, specifically 200 parts or more per 100 parts of polyether polymer, where the polyether polymer has an oxirane monomer unit with a cationic group, effectively prevents agglomeration and maintains high conductivity and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a large amount of heat conductive filler is added to improve heat conductivity, then heat dissipating performance is improved, but the filler shows poor dispersibility and agglomerates after long-term use
Solution Approach 1:
The patent changes the chemical parameters of the polymer matrix by introducing oxirane monomer units with specific functional groups that can chemically interact with metal-containing powders. This chemical modification of the matrix parameters enables strong adhesion to filler particles, preventing agglomeration while maintaining high heat conductivity even with large amounts of filler (200 parts or more per 100 parts of polymer).
Solution Approach 2:
The patent creates a composite material system consisting of a polyether polymer matrix containing oxirane monomer units combined with metal-containing powders. The specific composite structure where the polymer chemically bonds to the metal powder surfaces ensures both high heat conductivity and long-term stability, preventing the filler agglomeration that occurs in conventional composite materials.
2Reliability
If a large amount of electrically conductive filler is added to improve electrical conductivity, then electrical conductive performance is improved, but the filler shows poor dispersibility and agglomerates after long-term use
Solution Approach 1:
The patent modifies the chemical parameters of the polymer matrix by incorporating oxirane monomer units with functional groups that chemically interact with metal-containing powders. This chemical parameter change creates strong adhesion between the matrix and filler, ensuring good dispersibility and preventing agglomeration over time, thereby maintaining reliable electrical conductivity.
Solution Approach 2:
The patent develops a composite material comprising a polyether polymer with oxirane monomer units and metal-containing powders. The chemical bonding interface in this composite structure ensures stable dispersion of conductive filler particles, maintaining electrical conductive performance without agglomeration during long-term use.
3Ease of manufacture
If conventional polymer materials are used as matrix, then processing is easier, but the metal-containing powder shows agglomeration and poor long-term stability
Solution Approach 1:
The patent changes the chemical parameters of the polymer matrix by introducing oxirane monomer units with functional groups capable of chemical interaction with metal-containing powders. This parameter change maintains processing ease while dramatically improving long-term stability by preventing filler agglomeration through chemical adhesion.
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
The composition demonstrates excellent long-term stability and maintains high heat and electrical conductivity, enabling suitable processing into sheets for various applications.
Implementation Method 1
wherein at least a part of the oxirane monomer unit included in the polyether polymer is an oxirane monomer unit having a cationic group
Implementation Method 2
a heat conductive material has been conventionally employed to efficiently transfer heat from the heat-generating electronic component to the cooling member
Implementation Method 3
various properties of a metal-containing powder such as high heat conductivity and high electrical conductivity
Data Source
AI summary
A polyether polymer composition containing 200 parts by weight or more of a metal-containing powder per 100 parts by weight of a polyether polymer having an oxirane monomer unit is provided. The present invention can provide a polyether polymer composition that is capable of appropriately showing various properties of the metal-containing powder such as high heat conductivity and high electrical conductivity and that also has excellent long-term stability.