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Effect of Layercd Double Hydroxides on Ultraviolet Aging Resistanee of SBS Modified Bitumen Membrane
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Effect of Layercd Double Hydroxides on Ultraviolet Aging Resistanee of SBS Modified Bitumen Membrane
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Journal Article
Effect of Layercd Double Hydroxides on Ultraviolet Aging Resistanee of SBS Modified Bitumen Membrane
2015
Overview
Layered double hydroxides （LDHs）/styrene-butadiene-styrene （SBS） eopolymer modified bitumen was prepared by melt blending. The effect of LDHs on the ultraviolet （UV） aging behavior of SBS modified bitumen was investigated. The changes of chemical structures of modified bitumen before and after UV aging were characterized by Fourier transform infrared spectroscopy （FTIR）. The results show that LDHs obviously reduce the variation of softening point and low temperature flexibility of SBS modified bitumen under different UV radiation intensities, which indicates that the UV aging resistance performance of SBS modified bitumen is improved effectively by LDHs. Compared with SBS modified bitumen, the changes of carbonyl, sulfoxide and butadienyl of LDHs/SBS modified bitumen decrease significantly after UV aging according to FTIR analysis, demonstrating that the oxidation and degradation reactions of SBS modified bitumen were restrained effectively by adding LDHs.
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