Investigation on properties of polymer modified asphalt containing various antiaging agents
Investigation on properties of polymer modified asphalt containing various antiaging agents
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含多种抗老化剂的聚合物改性沥青性能研究
DOI：
10.1016/j.polymdegradstab.2013.09.024
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发表时间：
2013-12-01
影响因子：
5.9
通讯作者：
Chen, Shuanfa
中科院分区：
文献类型：
--
作者：
Cong, Peiliang;Wang, Xiao;Chen, Shuanfa
丁苯共聚物(SBS)三嵌段共聚物改性沥青结合料(SBSMA)，应用于加铺层，现场易老化。因此，在研究沥青路面使用性能时，必须考虑SBSMA的热老化和紫外线老化。本研究采用抗氧剂和紫外线吸收剂来提高SBSMA的抗老化性能。结果表明，加入抗氧剂的SBSMA具有较好的耐热老化性能，加入紫外线吸收剂的SBSMA具有较好的光稳定性。含抗氧剂和紫外线吸收剂的复合抗老化剂是制备物理和抗老化性能较好的SBSMA的最佳选择。实验结果还表明，在低含量时，防老剂对SBSMA的物理性能影响不大。尤其是ZDDP用量为1wt%、UV531用量为0.5wt%时，SBSMA的常规物理性能接近SBSMA。(C)2013爱思唯尔有限公司。保留所有权利。
The Styrene-butadiene-styrene copolymer (SBS) triblock copolymer modified asphalt binder (SBSMA), applied in an overlay, and is easy to age in the field. Thus, the thermal aging and ultraviolet (UV) radiations aging of SBSMA must be considered for the research on the performance of asphalt pavement. Antioxidants and UV absorbers were employed to improve the antiaging resistance of SBSMA in this study. The results indicated that the SBSMA with antioxidants has good heat aging resistance, and SBSMA with UV absorbers blends have good photostability. The compound antiaging agents containing antioxidants and UV absorbers are a best choice to prepare SBSMA with better physical and antiaging resistance. The experimental results also indicated that the effects of antiaging agents on the physical properties of SBSMA are little at low contents. Especially conventional physical properties of SBSMA with 1 wt% of ZDDP and 0.5 wt% of UV531 are close to that of SBSMA. (C) 2013 Elsevier Ltd. All rights reserved.