Understanding the effects of in-service temperature and functional fluid on the ageing of silicone rubber

Kashi, Sima, De Souza, Mandy, Al-Assafi, Salwan and Varley, Russell 2019, Understanding the effects of in-service temperature and functional fluid on the ageing of silicone rubber, Polymers, vol. 11, no. 3, doi: 10.3390/polym11030388.

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Title Understanding the effects of in-service temperature and functional fluid on the ageing of silicone rubber
Author(s) Kashi, SimaORCID iD for Kashi, Sima orcid.org/0000-0002-3974-6825
De Souza, MandyORCID iD for De Souza, Mandy orcid.org/0000-0003-4712-2294
Al-Assafi, Salwan
Varley, RussellORCID iD for Varley, Russell orcid.org/0000-0002-3792-1140
Journal name Polymers
Volume number 11
Issue number 3
Total pages 14
Publisher MDPI Publishing
Place of publication Basel, Switzerland
Publication date 2019-02-26
ISSN 2073-4360
Keyword(s) ageing
mechanical properties
silicone rubber
temperature
thermal properties
Science & Technology
Physical Sciences
Polymer Science
BEHAVIOR
Summary With an organic/inorganic hybrid nature, silicone elastomers are amongst the most versatile engineering materials, exploited in a wide range of applications either as end-products or in manufacturing processes. In many industrial machines, silicone components are exposed to in-service conditions, such as high or low temperatures, contact with functional fluids, mechanical loading, and deformations, which can adversely affect these components and reduce their lifespan, leading to machine failure in turn. The present study investigates the behaviour of a silicone component of a manufacturing equipment and the variations in the part's properties due to in-service conditions (temperature, exposure to heat transfer fluid, and mechanical deformation) to develop a monitoring tool. An experimental design was employed to study the main and the interaction effects of temperature (22 °C, 180 °C), medium (air, synthetic heat transfer fluid), and strain (0%, 200%) on the silicone component's properties. Results showed that while the chemistry of the component remains intact, its thermal and in particular mechanical properties are largely influenced by the in-service conditions. Consequently, leading to a physical rather than a chemical failure of the component and limiting its service life. Statistical analysis revealed that high temperature and the exposure to the heat transfer fluid have the most sever effects. Moreover, these two manufacturing parameters were found to have a significant interaction with one another, whose effect cannot not be neglected.
Language eng
DOI 10.3390/polym11030388
Field of Research 091209 Polymers and Plastics
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2019, The Authors
Persistent URL http://hdl.handle.net/10536/DRO/DU:30120383

Document type: Journal Article
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