Resin Discrimination via X-ray Scattering Intensity Ratio
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Solution Overview
Problem
Existing methods, such as the FP method, cannot accurately discriminate the type of resin in a sample using X-rays, as they rely on assumptions about main component elements and cannot specify organic compounds like resins, limiting their application to distinguishing resins from other substances.
Innovation Solution
A resin discriminating apparatus and method that irradiates a sample with X-rays, calculates the scattering intensity ratio of Compton and Rayleigh scattered X-rays, and uses this ratio to discriminate the type of resin by comparing it with stored ratios for known resins, employing regression analysis to estimate mixing ratios and prevent detection errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the FP method is used to perform quantitative determination on resin samples, then quantitative values of components can be estimated, but the type of resin cannot be specified
Solution Approach 1:
The invention changes the measurement parameter from fluorescent X-ray intensity to scattered X-ray intensity ratio. By measuring the ratio of Compton scattering intensity to Rayleigh scattering intensity, the system obtains a new parameter that varies according to resin type, enabling both quantitative determination and resin identification simultaneously
Solution Approach 2:
The invention adds a new dimension to the measurement by introducing the scattering intensity ratio as an additional parameter. This ratio provides information about electron density distribution that is independent of the quantitative composition data, enabling resin type discrimination without affecting the accuracy of quantitative determination
2Quantity of substance
If scattered X-rays are used for main component elements in quantitative analysis, then quantitative values can be obtained, but resin type discrimination is not possible
Solution Approach 1:
The invention utilizes the parameter of scattered X-ray intensity ratio, which is inherently present in the scattering measurement but was previously unused. By extracting and analyzing this ratio parameter, the system enables resin type discrimination while maintaining the quantitative analysis capability of the scattering method
3Measurement precision
If fluorescent X-rays are used for component analysis, then element content can be measured, but organic compound specification is difficult
Solution Approach 1:
The invention merges the scattering measurement approach with the fluorescent X-ray analysis method. By combining scattered X-ray intensity ratio measurement (for resin type identification) with fluorescent X-ray intensity measurement (for element content quantification), the system achieves both element analysis and organic compound specification simultaneously
Solution Approach 2:
The invention creates a composite analysis method that integrates two different measurement approaches (scattering and fluorescence). This composite method leverages the strengths of both techniques: scattering provides resin type information through intensity ratio, while fluorescence provides element content information, together enabling complete resin characterization
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
Enables accurate discrimination of resin types, including both solid and non-solid forms, by analyzing X-rays emitted from the sample, allowing for precise identification and quantification of resin components, even when multiple resins are present.
Implementation Method 1
an X-ray source which emits X-rays
Implementation Method 2
a calibration curve representing a relation between the X-ray intensity and the element content
Implementation Method 3
detects a spectral line due to Compton scattering
Implementation Method 4
detects a spectral line due to Rayleigh scattering
Data Source
AI summary
A resin discriminating apparatus includes an X-ray tube which emits X-rays, an X-ray detector which detects X-rays emitted from a sample irradiated with X-rays, a data processing section which creates a spectrum on the basis of a detection signal obtained by the X-ray detector, a peak extraction section which extracts a spectral line due to Compton scattering and a spectral line due to Rayleigh scattering derived from a target element of the X-ray tube on the spectrum, and obtains a peak intensity, and a discrimination section which calculates a scattering intensity ratio which is a ratio of the Rayleigh scattering intensity to the Compton scattering intensity and discriminates the type of resin contained in the sample from the scattering intensity ratio.