Rubber aging life prediction based on interpolation and improved time-temperature superposition principle

With focus on quickly and accurately predicting and evaluating the aging performance degradation of rubber at room temperature, the pseudo-failure life at each different acceleration temperature is proposed to be calculated by interpolation method based on indoor high temperature accelerated aging d...

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Bibliographic Details
Published in:Materials research express 2022-01, Vol.9 (1), p.15301
Main Authors: Kunheng, Li, Zhiyong, Chen, Wenku, Shi
Format: Article
Language:English
Subjects:
accelerated ageing
Aging
Aging (materials)
Data processing
Dispersion
Equivalence principle
High temperature
Interpolation
Life prediction
Mathematical analysis
Mechanical properties
Optimization
Performance degradation
Performance evaluation
Room temperature
Rubber
shift factor
Superposition (mathematics)
Temperature effects
time-temperature superposition principle
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Summary:With focus on quickly and accurately predicting and evaluating the aging performance degradation of rubber at room temperature, the pseudo-failure life at each different acceleration temperature is proposed to be calculated by interpolation method based on indoor high temperature accelerated aging data, and on the basis of the obtained pseudo-failure life. By introducing the time-temperature equivalence principle, a shift factor obeying to an Arrhenius law is derived, and master curves are built as well for the compression set as for the ultimate mechanical properties. The concept of the sum of squares of dispersion coefficient errors is proposed to evaluate the prediction accuracy. Meanwhile a quantitative calculation method that considers the effect of temperature on the performance degradation curve and the shift factor is innovatively proposes. The results show that the proposed optimization method based on the traditional time-temperature superposition principle can quickly process the aging life at room temperature, and the prediction results are distributed within the 3-fold dispersion line, which can well meet the engineering requirements. The reduction of the DSC value from 1.4164 to 1.0828 further demonstrates the effectiveness of the proposed method above. This method can provide some reference for other related polymer materials accelerated aging data processing and life prediction.
ISSN:2053-1591
2053-1591
DOI:10.1088/2053-1591/ac45ba