The Rate Dependence of Confor Polyurethane Foams
Source abstract
Abstract
ABSTRACT A low resilience polyurethane foam was compressed under impact, constant strain rate and creep loading conditions, over a range of temperatures. The foam was characterised by scanning electron microscopy and image analysis. The compressive collapse stress was found to be strongly strain rate and temperature dependent, with the maximum rate effect in the impact velocity range from 1 to 10 m/s. The highly viscoelastic response is due to the glass transition temperature being about 20°C, and the low crystallinity of the foam. The foam creep response is similar in many ways to that of conventional flexible PU foam, but the creep strain can stabilise at intermediate values.
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Research context
OpenAlex topics: Cellular and Composite Structures · Polymer composites and self-healing · Flame retardant materials and properties
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Affiliations
School of Metallurgy and Materials, University of Birmingham, Bl5 2TT, UK
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