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3. Plasticizers
Plasticizers are often considered as processing aids to improve industrial performance. They act by lowering viscosity during mixing to facilitate the incorporation of ingredients. They also facilitate the flow of the mixture through the injection mold channels. However, the damping time of the finished product is increased in their presence, and stiffness is reduced. However, these compounds tend to migrate out of the cured mixture, leading to changes in mechanical properties over time. This is referred to as physical ageing, as opposed to chemical ageing by thermo-oxidation, for example.
These plasticizers have varying compatibilities with polymers. Depending on this compatibility, they play a role in the position of the peak of the glass transition temperature of compounds influencing rubber properties. This effect is...
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Bibliography
Standards and norms
- Rubber and latex – Nomenclature - ISO 1629 - 2013
Patents
WO2013090464 Rubber compositions comprising graphene and reinforcing fillers and articles formed therefrom
WO2008045778 Graphene rubber functional nanocomposites
US2010/0096597 Functional graphene-rubber nanocomposites
WO2003060002 Rubber composition containing carbon nanotubes as reinforcing agent and method of manufacture
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