Rubber Temperature History Estimation Using Polymer Carbonization Rate
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Solution Overview
Problem
Existing methods for estimating the temperature history of rubber compositions, such as FT-IR and rubber hardness changes, are difficult to quantify and prone to large errors, making accurate estimation challenging.
Innovation Solution
A temperature history estimation device and method that utilizes a thermogravimetry-differential thermal analysis (TG-DTA) to measure the carbonization rate of polymers in rubber compositions, associating this rate with pre-stored data to estimate the temperature history.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If FT-IR or rubber hardness changes are used to estimate temperature history, then the estimation can be performed, but the measurement precision is poor and errors are large
Solution Approach 1:
The patent changes the measurement parameter from FT-IR spectral data or hardness values to carbonization rate measured by TG-DTA. This parameter change enables quantitative estimation of temperature history by utilizing the well-defined relationship between carbonization rate and temperature exposure, thereby resolving the contradiction between measurement precision and reliability.
Solution Approach 2:
The patent replaces the mechanical/physical measurement methods (FT-IR spectroscopy, hardness testing) with a thermal analysis method (TG-DTA) that measures mass change during thermal decomposition. This substitution provides more reliable and precise temperature history estimation through quantitative data from the thermogravimetric analysis.
2Measurement precision
If conventional methods are used for temperature history estimation, then the process is simple, but the measurement precision and quantification capability are insufficient
Solution Approach 1:
The patent introduces carbonization rate as an intermediary parameter that mediates between the temperature history and the measurable physical changes. By measuring the carbonization rate through TG-DTA, the system achieves precise temperature history estimation without requiring complex direct temperature sensing, thus improving measurement precision while maintaining practical device complexity.
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 and simple estimation of the temperature history of rubber compositions by quantifying the carbonization rate, reducing errors and improving precision compared to FT-IR and rubber hardness changes.
Implementation Method 1
the measurement value of the carbonization rate is measured by using a thermogravimetry-differential thermal analysis device
Implementation Method 2
the measurement value of the carbonization rate is measured by using a thermogravimetry-differential thermal analysis device
Implementation Method 3
a measurement value of a carbonization rate of a polymer contained in the measurement object
Data Source
AI summary
A temperature history estimation device estimates a temperature history of a measurement object that is a rubber composition. The temperature history estimation device includes a measurement value reception unit that receives a measurement value of a carbonization rate of a polymer contained in the measurement object, a storage unit that stores data showing a relationship between a carbonization rate of a polymer contained in a sample of the rubber composition, and a temperature, and a temperature history estimation unit that estimates the temperature history of the measurement object based on the measurement value of the carbonization rate and the data.