Effect of aerobic ageing at elevated temperatures on dynamic mechanical properties of certain natural rubber vulcanisates


Citation

Goodchild I. R., . and Pond T. J., . Effect of aerobic ageing at elevated temperatures on dynamic mechanical properties of certain natural rubber vulcanisates. pp. 1-10. ISSN 0127-7065

Abstract

Dynamic modulus and damping properties have been determined over a range of temperatures from five different natural rubber vulcanisates aerobically aged at elevated temperatures for periods up to 150 days. Overall aerobic ageing is found to increase the modulus but decrease the damping of the vulcanisates. The rate of change of properties caused by ageing though initially relatively small may increase after longer times if antioxidant material becomes depleted. Results at longer ageing times indicate the modulus may depending upon the vulcanisates ingredients pass through a maximum; however the modulus remains greater than for unaged material. Aerobic ageing is also shown to alter the glass transition temperature of a vulcanisate.


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Abstract

Dynamic modulus and damping properties have been determined over a range of temperatures from five different natural rubber vulcanisates aerobically aged at elevated temperatures for periods up to 150 days. Overall aerobic ageing is found to increase the modulus but decrease the damping of the vulcanisates. The rate of change of properties caused by ageing though initially relatively small may increase after longer times if antioxidant material becomes depleted. Results at longer ageing times indicate the modulus may depending upon the vulcanisates ingredients pass through a maximum; however the modulus remains greater than for unaged material. Aerobic ageing is also shown to alter the glass transition temperature of a vulcanisate.

Additional Metadata

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Item Type: Article
AGROVOC Term: Natural rubber
AGROVOC Term: Extraction
AGROVOC Term: Mechanical properties
AGROVOC Term: Chemical reactions
AGROVOC Term: Cross-linking
AGROVOC Term: Acetone
AGROVOC Term: Antioxidants
AGROVOC Term: Temperature
AGROVOC Term: Weight
AGROVOC Term: Ageing
Depositing User: Ms. Suzila Mohamad Kasim
Last Modified: 24 Apr 2025 06:28
URI: http://webagris.upm.edu.my/id/eprint/23331

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