Pressure-Sensitive Material Composition for High-Pressure Color Gradation
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Solution Overview
Problem
Existing pressure measuring materials are limited to measuring pressures below 300 MPa, and there is a demand for materials that can provide color development with excellent gradation in a high pressure range of 100 MPa to 10,000 MPa.
Innovation Solution
A pressure measuring material comprising a substrate and a pressure-sensitive layer containing a polymer matrix, microcapsules encapsulating an electron-donating dye precursor and a solvent, and an electron-accepting compound, which allows for color development with excellent gradation in the high pressure range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional pressure measuring materials are used, then color development can be obtained in the low pressure range (below 300 MPa), but the material cannot measure high pressure (above 300 MPa)
Solution Approach 1:
The patent changes the physical and chemical parameters of the pressure-sensitive layer by incorporating a polymer matrix with specific properties (molecular weight 1,000 or more) and adjusting the composition ratio of microcapsules, electron-accepting compound, and binder. This parameter modification enables the material to function reliably in the high pressure range of 100 MPa to 10,000 MPa while maintaining color development capability.
Solution Approach 2:
The patent creates a composite pressure-sensitive layer combining multiple components: polymer matrix, microcapsules containing electron-donating dye precursor and solvent, electron-accepting compound, and binder. This composite structure provides both high-pressure resistance and color development functionality, resolving the contradiction between measurement range expansion and color development reliability.
2Measurement precision
If the pressure-sensitive layer contains only microcapsules and electron-accepting compound, then the structure is simple, but the material cannot maintain color development gradation at high pressure
Solution Approach 1:
The patent introduces a polymer matrix with molecular weight of 1,000 or more as a key parameter change in the pressure-sensitive layer composition. This polymer matrix component is essential for maintaining color development gradation at high pressure, and its inclusion justifies the increased compositional complexity by enabling the core function of high-pressure measurement with excellent gradation.
3Measurement precision
If a polymer matrix with high molecular weight is used, then the material achieves excellent color development gradation in high pressure range, but the manufacturing process becomes more complex
Solution Approach 1:
The patent specifies a molecular weight parameter of 1,000 or more for the polymer matrix, which is a clear and measurable criterion. This parameter specification provides a straightforward manufacturing target, and the resulting material achieves excellent color development gradation in the high pressure range, justifying the manufacturing complexity through superior performance.
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 material achieves color development with excellent gradation in the range of 100 MPa to 10,000 MPa, enabling accurate pressure measurement in high-pressure applications.
Implementation Method 1
a pressure-sensitive layer which contains a polymer matrix, microcapsules encapsulating an electron-donating dye precursor and a solvent, and an electron-accepting compound
Data Source
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AI summary
Provided is a pressure measuring material having a substrate and a pressure-sensitive layer, wherein the pressure-sensitive layer contains a polymer matrix containing a polymer compound having a molecular weight of 1,000 or more, and microcapsules encapsulating an electron-donating dye precursor and a solvent, and an electron-accepting compound. Also provided is a method for manufacturing the pressure measuring material.