Conductive Polymer Porous Body Drying for Uniform Internal Adhesion
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Solution Overview
Problem
Existing methods for producing porous bodies containing conductive polymers face challenges in achieving high adhesion amounts and uniformity of the conductive polymer within the porous structure, due to issues with solvent evaporation and drying conditions.
Innovation Solution
A method involving the impregnation of a porous body with a conductive polymer composition, followed by a two-stage drying process. The first stage involves drying at a temperature lower than the boiling point of the solvent by 10°C or more, and the second stage involves drying at a temperature equal to or higher than the boiling point of the solvent.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the porous body is dried at a high temperature to remove solvent quickly, then the productivity is improved, but the conductive polymer is drawn outward from the inside of the porous body, decreasing the amount and uniformity of adhesion inside the porous body
Solution Approach 1:
The drying process is divided into three distinct stages with different temperature ranges: first drying (lower temperature to prevent polymer migration), second drying (intermediate temperature for solvent removal), and third drying (higher temperature for complete solvent elimination). This segmentation allows each stage to optimize for its specific function, resolving the contradiction between drying speed and adhesion uniformity.
Solution Approach 2:
The first drying stage is performed at a lower temperature before the polymer can migrate outward, preventing the harmful effect of polymer displacement. This preliminary action at controlled conditions ensures that subsequent high-temperature drying will not cause adhesion uniformity problems, as the polymer is already in its final position.
2Manufacturing precision
If the porous body is dried at a low temperature to prevent conductive polymer migration, then the uniformity of adhesion is improved, but the drying time increases, decreasing the productivity
Solution Approach 1:
The drying process is divided into three distinct stages with different temperature ranges: first drying (lower temperature to prevent polymer migration), second drying (intermediate temperature for solvent removal), and third drying (higher temperature for complete solvent elimination). This segmentation allows each stage to optimize for its specific function, resolving the contradiction between drying speed and adhesion uniformity.
Solution Approach 2:
The drying process continues without interruption through all three stages, with each stage building upon the previous one. The continuous removal of solvent across increasing temperature stages ensures complete drying while maintaining polymer uniformity, achieving both high productivity and manufacturing precision through an uninterrupted multi-stage process.
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 effectively increases the amount and improves the uniformity of adhesion of the conductive polymer within the porous body, enhancing the performance of the resulting material.
Implementation Method 1
impregnating a porous body with a conductive polymer composition
Implementation Method 2
drying the porous body after impregnation
Data Source
AI summary
A method for production of a porous body containing a conductive polymer comprising impregnating a porous body with a conductive polymer composition comprising component (a) a conductive polymer and component (b) a solvent, and drying the porous body after impregnation at a temperature lower than the boiling point of the solvent by 10° C. or more, followed by drying at a temperature higher than or equal to the boiling point of the solvent.