摘要
通过加入相容剂和稳定剂来稳定 SBS在沥青中的分散 ,制备贮存稳定性良好的SBS改性沥青 ,并探讨其稳定机理。研究表明 ,相容剂能够溶胀 SBS的硬嵌段——聚苯乙烯微区 ,有利于 SBS在沥青中均匀分散 ,稳定剂能够引发 SBS交联形成网络结构和沥青接枝到SBS上 ,稳定 SBS在沥青中的分散 。
The SBS copolymer modified asphalt (PMA)with good storage stability was prepared by adding Compatilizer and stabilizer. The stabilization mechanism of SBS modified asphalt was discussed.It was shown that the compatilizer could swell the hard block of SBS-the polystyrene domain,and could be of help for SBS to disperse in asphalt homogeneously.The stabilizer could initiate the crosslinking reaction of SBS and form a stable three dimensional network and could initiate asphalt to graft onto SBS.Then SBS was dispersed in asphalt steadily and formed a macroscopic stable blending system.
出处
《石油沥青》
2001年第4期34-40,共7页
Petroleum Asphalt
