Title: SBS/CARBON BLACK COMPOUNDS GIVE ASPHALTS WITH IMPROVED HIGH-TEMPERATURE STORAGE STABILITY
Page Range: p.477-485
Author(s): Wang S; Zhang Y; Zhang Y
File size: 238K
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Journal: Polymers and Polymer Composites
Issue Year: ppc
Volume: 11
Issue No: No. 6
Abstract
In order to produce modified asphalts with high temperature storage stability, carbon black was added to styrene-butadiene-styrene tri-block copolymers. The effect of carbon black on the high temperature storage properties, dynamic rheology, mechanical properties (softening point, viscosity, etc.) and the morphologies of the modified asphalts were studied. It was found that the ratio of SBS to carbon black in the compound had a great effect on the high-temperature storage behaviour, and that the modified compounds were stable when the ratio was around 2. The introduction of carbon black was shown to have almost no effect on the dynamic rheology or the mechanical properties of the modified. The improvement in high-temperature storage stability is attributed to a decrease in density difference and an improvement in the compatibility between SBS and the asphalt. 16 refs.
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