The double network, a model describing filled elastomers

The model presented here to describe the deformation behaviour of filled elastomers is based on the observation that deformation occurs inhomogeneously. As a result of extending a filled rubber, the filler particles become aligned in rows parallel to the stretching direction. The rows are connected...

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Bibliographic Details
Published in:Polymer (Guilford) 1993, Vol.34 (6), p.1216-1221
Main Authors: Reichert, Werner Franz, Göritz, Dietmar, Duschl, Edgar Johannes
Format: Article
Language:English
Subjects:
Applied sciences
elastomers
Exact sciences and technology
filler
fully extended chains
Mechanical properties
network model
Organic polymers
Physicochemistry of polymers
Properties and characterization
reinforcement
stress-induced crystallization
stress-strain behaviour
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Summary:The model presented here to describe the deformation behaviour of filled elastomers is based on the observation that deformation occurs inhomogeneously. As a result of extending a filled rubber, the filler particles become aligned in rows parallel to the stretching direction. The rows are connected to each other by strands emanating from the filler particles, forming a second network that is superimposed on the molecular network. The stress-strain behaviour can be described by writing the stress as a superposition of stresses of the individual networks, σ = (1 − Φ) σ 1 + Φσ 2. The parameter Ф gives the volume fraction of strands between the filler particles. Macroscopic properties such as stress-strain behaviour or stress-induced crystallization of filled elastomers are described well by this model.
ISSN:0032-3861
1873-2291
DOI:10.1016/0032-3861(93)90776-7