Coating Phase Separation Detection via Probe Force Profiling
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Solution Overview
Problem
Current methods for assessing the storage stability of coating compositions are subjective, time-consuming, and lack reproducibility due to the difficulty in detecting and quantifying phase separation, which affects the quality and processing of waterborne, solvent-borne, or solvent-free coatings.
Innovation Solution
A method involving a measurement probe that displaces through the coating composition along a predefined path with a specific speed profile, acquiring a force-displacement profile to detect phase separation by measuring dynamic pressure, and processing this data using techniques like thresholding, change point detection, and the Ramer-Douglas-Peucker algorithm to quantify phase volumes and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If visual assessment by human being is used to assess storage stability, then the method is simple to operate, but the measurement precision and reliability are poor due to subjectivity and lack of reproducibility
Solution Approach 1:
The patent replaces the manual visual assessment mechanism with an automated measurement system that uses a probe to detect phase separation through physical properties (density, viscosity, or other measurable characteristics). This substitution eliminates human subjectivity while maintaining operational simplicity through automated execution.
Solution Approach 2:
The patent creates a digital copy or representation of the coating composition's physical state through measurement data acquisition. The system captures quantitative data about phase separation and stores it as digital information, allowing for objective analysis and reproducibility without requiring repeated manual visual assessments.
2Device complexity
If manual visual assessment is used to detect phase separation, then the device complexity is low, but the productivity is reduced due to time-consuming evaluation
Solution Approach 1:
The measurement system performs self-service by automatically acquiring, processing, and analyzing measurement data without requiring manual intervention. The system independently completes the entire phase separation detection process, from probe insertion to data interpretation, significantly increasing productivity while maintaining acceptable device complexity.
Solution Approach 2:
The patent enables continuous measurement and analysis by keeping the measurement system operational throughout the storage stability assessment process. The system continuously monitors the coating composition for phase separation, providing uninterrupted data collection and analysis rather than requiring discrete manual inspections.
3Measurement precision
If spatula scraping method is used to detect sediment phase, then the measurement precision is improved compared to visual assessment, but the device complexity increases and the method remains rough characterization
Solution Approach 1:
The patent replaces the mechanical spatula scraping method with an automated measurement probe that detects phase separation through physical property measurements. This substitution provides more precise and reproducible data while reducing the complexity of manual operations and eliminating the need for rough characterization methods.
4Loss of information
If multiple phases are detected simultaneously, then the information quantity increases, but the difficulty of detecting and measuring increases due to interdependent process parameters
Solution Approach 1:
The patent segments the complex measurement task into distinct measurement steps, each targeting specific phase characteristics. The system separately measures different physical properties (density, viscosity, etc.) for different phases, making the detection of multiple phases more manageable and less difficult while preserving complete information about each phase.
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 approach provides a reproducible, objective, and fast characterization of phase separation in coating compositions, enabling improved storage stability assessment and quality prediction, reducing manual errors and increasing efficiency in coating production.
Implementation Method 1
acquiring a force-displacement profile by measuring a force exercised on the measurement probe while the probe is being displaced along the predefined measurement path with the predefined speed profile through the coating composition
Data Source
Figure 1A~1B
Figure 2~4
Figure 5~6A
AI summary
The invention related to a method for detecting a phase separation of a waterborne or solvent-borne or solvent-free coating composition comprising - providing the coating composition in a receptacle; - providing a measurement instrument for receiving the receptacle, the measurement instrument comprising a measurement probe; - controlling the measurement instrument to a) displace the measurement probe through the coating composition along a predefined measurement path with a predefined speed profile, the predefined measurement path extending along a length axis of the receptacle, b) acquiring a force-displacement profile by measuring a force exercised on the measurement probe while the probe is being displaced along the predefined measurement path with the predefined speed profile; - processing the force-displacement profile for detecting at least one phase separation of the coating composition; and - outputting a detection result.