Stimuli-Responsive Composite Particles for Interior Pressure Measurement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional materials for measuring pressure and heat are limited in their ability to visually assess stimuli applied to interior surfaces, as they are typically in the form of films or sheets, making it difficult to measure pressure and heat distribution within complex structures.
Innovation Solution
Development of stimuli-responsive composite particles with microcapsules containing an electron-donating dye precursor and electron-accepting compounds, where the microcapsules are directly attached to the surface of the particles, allowing for visual measurement of pressure and heat applied to both exterior and interior surfaces through a color reaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional film or sheet materials are used for pressure and heat measurement, then exterior surface measurement is effective, but interior surface measurement becomes difficult
Solution Approach 1:
The invention divides the measurement material into discrete microcapsule particles that can be dispersed and applied to various surfaces including interior spaces. Each microcapsule acts as an independent measurement unit containing electron-donating dye precursors that react with electron-accepting compounds upon stimulus application, enabling measurement in locations where continuous film materials cannot reach.
Solution Approach 2:
The invention changes the physical form parameter from continuous film/sheet to discrete particles with specific size ranges (0.1-100 μm). This parameter change enables the material to be applied to interior surfaces through dispersion and suspension techniques, expanding the application scope while maintaining measurement functionality.
2Ease of manufacture
If microcapsules are dispersed separately from electron-accepting compound particles, then manufacturing is simpler, but color developability decreases
Solution Approach 1:
The invention merges microcapsules containing electron-donating dye precursors with electron-accepting compound particles into a single composite particle structure. The microcapsules are attached to the surface of the electron-accepting compound particles, ensuring close proximity and efficient contact between the two components. This merging maintains manufacturing simplicity while significantly improving color developability upon stimulus application.
3Adaptability or versatility
If the particle size of composite particles is reduced for better distribution, then interior surface penetration improves, but manufacturing precision requirements increase
Solution Approach 1:
The invention specifies an optimal particle size range of 0.1-100 μm for the composite particles. This parameter change balances the need for small particle size to achieve good distribution and penetration into interior surfaces with the practical requirements of manufacturing precision. The defined range enables effective dispersion while remaining achievable with conventional particle production techniques.
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 composite particles enable effective visual measurement of pressure and heat distribution by developing color in response to applied stimuli, overcoming the limitations of conventional materials by allowing for interior surface assessment and improving color developability.
Implementation Method 1
microcapsules containing an electron-donating dye precursor encapsulated therein and particles of an electron-accepting compound causing the electron-donating dye precursor to develop color
Implementation Method 2
a material for pressure measurement capable of realizing density that becomes visible or readable with weak pressure
Implementation Method 3
as a heat distribution indicator that is capable of indicating heat distribution with a big temperature difference
Data Source
Figure 1
Figure 2
AI summary
Provided are stimuli-responsive composite particles which contain microcapsules containing an electron-donating dye precursor and particles of an electron-accepting compound causing the electron-donating dye precursor to develop color, in which the microcapsules are attached to at least a portion of the surface of each of the particles of the electron-accepting compound. Also provided is a manufacturing method of the stimuli-responsive composite particle.