| Autor: |
TIAN Yaogang, MAO Aijun, YAN Baobao, JIANG Jing, LU Xin, JI Kuo, ZHANG Jun |
| Zdroj: |
Journal of Functional Materials / Gongneng Cailiao; 2023, Vol. 54 Issue 12, p12113-12118, 6p |
| Abstrakt: |
In order to solve the problem that the broken branch chain of SBS in aging SBS modified asphalt cannot be repaired by conventional regeneration and affects the modification effect, the reactive compound 1,4-diepoxy-propoxy-butane (BDDE), 4,4-methylene diisocyanate (MD1) and BDDE-MD1 complex were used to study the active regeneration and repair of the broken branch chain of SBS in aging SBS modified asphalt. The regeneration mechanism of SBS modified asphalt was studied by studying its properties, molecular weight and functional group changes. The results show that BDDE-MD1 composite regeneration has the best performance in improving the low temperature toughness and high temperature deformation resistance of aging SBS modified asphalt. FT-1R and GPC analysis show that the active reaction regeneration can achieve the link of SBS branch chain through functional group reaction. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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