Controllable synthesis of SiC wrapped LDHs to reinforce microwave absorption and exothermic properties of styrene-butadiene-styrene (SBS) polymer modified asphalt | Zendy

Chao Li | Zendy; Guodong Zeng | Zendy; Min Zhou | Zendy; Yang Fang | Zendy; Zongwu Chen | Zendy; Yishen Xu | Zendy; Siyin Ding | Zendy; Yuan Miao | Zendy; Hao Li | Zendy; Shaopeng Wu | Zendy

Open Access

Controllable synthesis of SiC wrapped LDHs to reinforce microwave absorption and exothermic properties of styrene-butadiene-styrene (SBS) polymer modified asphalt

Author(s) -

Chao Li,

Guodong Zeng,

Min Zhou,

Yang Fang,

Zongwu Chen,

Yishen Xu,

Siyin Ding,

Yuan Miao,

Hao Li,

Shaopeng Wu

Publication year - 2021

Publication title -

materials research express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.383

H-Index - 35

ISSN - 2053-1591

DOI - 10.1088/2053-1591/abe975

Subject(s) - materials science , exothermic reaction , asphalt , microwave , composite material , styrene , polymer , absorption (acoustics) , chemical engineering , copolymer , organic chemistry , chemistry , physics , quantum mechanics , engineering

Combination of styrene-butadiene-styrene (SBS) polymer and layered double hydroxides (LDHs) has commonly applied in asphalt to improve anti-ultraviolet aging performance, but it can not afford the reparation of cracks caused by aging of asphalt. Also, few researches focused on the structure and performance changes during synthesis of LDHs. Based on self-healing performance of asphalt, the produced cracks can be repaired by microwave heating. Therefore, the controllable synthesis of traditional microwave absorber SiC to wrap LDHs (SwL) at different temperatures was studied in this paper, and the effects of different SBS/SwL combination on the microwave absorption and exothermic properties of modified asphalt were studied. The SwL was firstly synthesized at 200 °C, 350 °C, 500 °C and 650 °C. Then morphology, phase composition, chemical structure of different SwL were evaluated. Finally, based on different combination of SBS and SwL, the effects of SBS/SwL on the microwave absorption in the frequency band from 1 GHz to 18 GHz and exothermic characteristics at 2.45 GHz of the modified asphalt were analyzed. The results show that SwL can be synthesized successfully, and the processing temperature significantly affects the structure of SwL. The SBS/SwL-200 modified asphalt has the best microwave absorption and exothermic properties. When used in self-healing asphalt, it is more advantageous to choose 200 °C as the synthesis temperature of SwL.

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