Thermogravimetric Analysis for Rubber Component Quantification
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Solution Overview
Problem
Conventional methods for quantifying components in rubber compositions are limited in versatility, requiring prior knowledge of the components' chemical structures and behaviors, which restricts their ability to accurately quantify a wide range of components.
Innovation Solution
A method involving an extraction step using an organic solvent to obtain an extraction liquid, followed by a concentration step to distill off the solvent, a thermal analysis step using thermogravimetric analysis to obtain a thermogravimetric curve, and a quantification step to read the weight reduction ratio from the curve, allowing for the accurate quantification of components in rubber compositions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional quantification methods are used, then quantification can be performed, but the versatility of components to be quantified is limited due to requiring prior knowledge of chemical structures and behaviors
Solution Approach 1:
The patent replaces conventional chemical analysis methods (which require knowledge of chemical structures and behaviors) with thermogravimetric analysis. This substitution allows quantification of components based on their thermal decomposition characteristics rather than requiring prior chemical knowledge, thereby improving versatility while maintaining measurement precision.
Solution Approach 2:
The patent changes the measurement parameter from chemical structure-based identification to thermal decomposition behavior. By measuring weight changes during heating (thermogravimetric curves), the method can identify and quantify components based on their thermal stability characteristics, enabling versatile quantification without requiring prior chemical structure knowledge.
2Adaptability or versatility
If thermogravimetric analysis is used, then versatility of component quantification is improved, but the complexity of the analysis process increases
Solution Approach 1:
The patent segments the quantification process into distinct steps: extraction of the component, concentration of the extract, thermogravimetric analysis of the concentrate, and quantification based on weight reduction ratios. This segmentation makes the complex TGA process more manageable and applicable to various components systematically.
Solution Approach 2:
The patent uses an intermediary substance (the extract concentrate) that undergoes controlled thermal decomposition. This intermediary allows the complex mixture to be analyzed systematically through TGA, where the weight reduction ratios of the concentrate provide information about the original component content, simplifying the overall analysis process.
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 method enhances the versatility of component quantification in rubber compositions, providing more accurate results compared to conventional techniques, especially for non-volatile components like hydrocarbon resins.
Implementation Method 1
an extraction step in which, from the rubber composition, an extraction liquid containing an extract is obtained using an organic solvent
Implementation Method 2
a concentration step in which the organic solvent is distilled off from the extraction liquid to obtain a concentrate of the extract
Implementation Method 3
a thermal analysis step in which the concentrate is subjected to thermogravimetric analysis to obtain a thermogravimetric curve
Implementation Method 4
a component whose weight is reduced in a high-temperature region is determined by further differentiating the thermogravimetric curve
Data Source
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AI summary
A method for quantifying a component in a rubber composition, the method comprising at least: an extraction step in which, from the rubber composition, an extraction liquid containing an extract is obtained using an organic solvent; a concentration step in which the organic solvent is distilled off from the extraction liquid to obtain a concentrate of the extract; a thermal analysis step in which the concentrate is subjected to thermogravimetric analysis to obtain a thermogravimetric curve; and a quantification step in which a weight reduction ratio corresponding to a component to be quantified is read from the thermogravimetric curve. It is preferred that the component to be quantified is a non-volatile component. It is preferred that the non-volatile component is a hydrocarbon resin.