LDPE/SBR复合改性沥青动态力学性能的研究  

Dynamic Mechanical Properties of LDPE/SBR Blend Modified Asphalt

作　　者：高光涛[1] 张隐西[2] 

机构地区：[1]青岛科技大学橡塑材料与工程教育部重点实验室,山东青岛266042 [2]上海交通大学高分子材料研究所,上海200240

出　　处：《塑料工业》2007年第8期63-65,共3页China Plastics Industry

基　　金：国家"863"计划资助项目(2002AA335100)

摘　　要：利用应变控制流变仪考察了共混物、硫磺及其用量等因素对LDPE/SBR改性沥青动态力学性能的影响。结果表明:共混物的加入提高了原始沥青的高温复合模量,降低了其损耗角正切值;随着共混物用量的增加,沥青的高温性能也随之提高,温度敏感性也显著减弱;硫磺的加入更进一步改善了沥青的高温性能,改善程度随硫磺用量的增加而更加明显;采用废旧塑料所得到的改性沥青依然拥有良好的高温动态性能。The effects of LDPE/SBR blend and sulfur content on the dynamic mechanical properties of modi- fied asphalts were investigated with a strain-controlled rheometry. The results showed the addition of LDPE/SBR blend was favorable for the improvement of the complex modulus at high temperature of the virgin asphalt, and could decrease the tangent of the loss angle of the asphalt;with the increase of the addition of the blend, the high temperature performance of the asphalt improved, while its temperature sensitivity decreased; the addition of sulfur further improved the performance of asphalt at high temperature, the more the sulfur, the obvious the impmve＇w-ment. The asphalt modified with recycled LDPE/SBR had the similar rheological property as that of virgin LDPE/ SBR.

关 键 词：LDPE/SBR共混物 改性沥青 动态力学性能 

分 类 号：TE626.86[石油与天然气工程—油气加工工程]