Contribution of storage hardening to Plasticity Retention Index test for natural rubber


Citation

Morris M. D., . Contribution of storage hardening to Plasticity Retention Index test for natural rubber. pp. 96-104. ISSN 0127-7065

Abstract

Two experiments were designed to investigate the influence of natural or storage hardening on Plasticity Retention Index (PRI) test results. The first experiment involved ageing of PRI test-pieces under vacuum and the second made use of sequential hardening and ageing of the rubber. Results from both experiments showed that storage hardening had a marked effect on PRI test results even for natural rubber samples which were not freshly prepared. Quantitative estimates of the contribution of hardening to the PRI test were correlated with accelerated storage hardening test results. The correlation indicated that approximately half of the total potential of a rubber sample for storage hardening occurs during the PRI ageing treatment.


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Abstract

Two experiments were designed to investigate the influence of natural or storage hardening on Plasticity Retention Index (PRI) test results. The first experiment involved ageing of PRI test-pieces under vacuum and the second made use of sequential hardening and ageing of the rubber. Results from both experiments showed that storage hardening had a marked effect on PRI test results even for natural rubber samples which were not freshly prepared. Quantitative estimates of the contribution of hardening to the PRI test were correlated with accelerated storage hardening test results. The correlation indicated that approximately half of the total potential of a rubber sample for storage hardening occurs during the PRI ageing treatment.

Additional Metadata

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Item Type: Article
AGROVOC Term: Natural rubber
AGROVOC Term: Rubber
AGROVOC Term: Latex
AGROVOC Term: Experimentation
AGROVOC Term: Storage life
AGROVOC Term: Plasticity
AGROVOC Term: Ageing
AGROVOC Term: High temperature
AGROVOC Term: Hardening
AGROVOC Term: Viscosity
Geographical Term: Malaysia
Depositing User: Ms. Suzila Mohamad Kasim
Last Modified: 28 Apr 2025 04:43
URI: http://webagris.upm.edu.my/id/eprint/23476

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