胶粉沥青相互作用的微观结构与组成变化  

Microscopic Structure and Composition Changes in Interaction Process between Rubber Powder and Asphalt

作　　者：周帅[1] 姚鸿儒[2] 王仕峰[2] 殷长龙[1] 刘晨光[1] 

机构地区：[1]中国石油大学(华东),青岛266580 [2]上海交通大学,上海200240

出　　处：《石油沥青》2015年第2期44-48,共5页Petroleum Asphalt

摘　　要：胶粉与沥青的相互作用过程与结果决定了改性沥青的性能。用载重轮胎胶粉制备改性沥青,研究了储存时间,对改性沥青黏度,软化点以及胶粉的组成与结构的影响。研究发现,随着储存时间的延长,改性沥青的黏度及软化点有所下降。天然橡胶含量较原始胶粉下降幅度较大,合成橡胶含量稍微降低,炭黑及无机填料开始不变,随后降低;胶粉的交联密度一直在下降,颗粒表面的多孔结构大大减少。The performance of modified asphalt was determined by interaction process and result of rub- ber powder and asphalt. The article researched effects of storage time on viscosity and softening point of modi- fied asphalt , composition and structure of rubber powder. The study found that with the extension of storage time, viscosity and softening point of modified asphalt decreased. Compared with the original powder, the con- tent of natural rubber decreased greatly, but content of synthetic rubber declined slightly. The content of car- bon black and mineral filler didn＇ t change at the start, then dropped. The crosslinking density of rubber pow- der had been declining and porous structure of particle surface reduced greatly.

关 键 词：胶粉 改性沥青 储存 演变 

分 类 号：TE626.86[石油与天然气工程—油气加工工程]