Paste-like Pressure Measurement Composition for Complex Surfaces
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Solution Overview
Problem
Existing pressure measurement materials struggle to accurately measure pressure distribution on surfaces with complex shapes, such as curved or uneven surfaces, due to difficulties in achieving good followability and color development distribution.
Innovation Solution
A paste-like composition for pressure measurement is developed, comprising microcapsules containing an electron-donating dye precursor and an electron-accepting compound, which undergoes color development in response to pressure. The composition has a high viscosity (5,000 mPa·s or more) and a specific content ratio of microcapsules to electron-accepting compounds, allowing for uniform coating and accurate pressure measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a film or sheet form pressure measurement material is used, then the material can provide a planar measurement surface, but it cannot follow curved or uneven surfaces effectively
Solution Approach 1:
The patent changes the physical state parameter of the measurement material from rigid film/sheet form to paste-like form with controlled viscosity (500-5000 mPa·s). This parameter change enables the material to flow and conform to curved or uneven surfaces while maintaining its pressure-sensitive functionality, thereby achieving both surface adaptability and measurement accuracy
Solution Approach 2:
The patent creates a composite paste-like material by combining microcapsules containing electron-donating dye precursors with electron-accepting compounds in a viscous medium. This composite structure provides both the flowability needed to follow complex surfaces and the chemical components necessary for pressure-induced color development, resolving the contradiction between form flexibility and measurement function
2Ease of manufacture
If microcapsules enclosing pigments or dyes are used, then color development occurs under pressure, but good color development distribution and density gradation cannot be obtained
Solution Approach 1:
The patent applies local quality by distributing microcapsules containing electron-donating dye precursors uniformly throughout the paste matrix along with electron-accepting compounds. This ensures that color development occurs locally and uniformly across the entire measurement area, creating consistent color development distribution and density gradation that reflects the actual pressure distribution
Solution Approach 2:
The patent incorporates both the electron-donating dye precursors (in microcapsules) and electron-accepting compounds into the paste formulation before application. This preliminary preparation ensures that both components are present in the correct proportions and distributions, enabling immediate and uniform color development when pressure is applied, without requiring additional steps or adjustments
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 paste-like composition enables accurate pressure distribution measurement on surfaces with complex shapes without depending on the surface shape, achieving good color development and density gradation, which was previously difficult with conventional materials.
Implementation Method 1
a color developing reaction between an electron-donating dye precursor and an electron-accepting compound is utilized
Data Source
AI summary
There are provided a paste-like composition for pressure measurement, including a microcapsule that encompasses an electron-donating dye precursor and an electron-accepting compound that causes the electron-donating dye precursor to develop a color, and a pressure measurement method using the paste-like composition for pressure measurement.