C_(9)石油树脂/SBS高黏沥青的制备及性能评价  

Preparation and property of C_(9) PR/SBS high-viscous asphalt

作　　者：王可 吕大为 姚立阳 Wang Ke;Lv Dawei;Yao Liyang(School of Civil and Transportation Engineering,Henan University of Urban Construction,Pingdingshan 467000)

机构地区：[1]河南城建学院土木与交通工程学院,平顶山467000

出　　处：《化工新型材料》2021年第1期259-263,268,共6页New Chemical Materials

基　　金：国家自然科学联合基金(U1504508);河南省重点科技攻关计划项目(112102310602)。

摘　　要：采用共混复合改性技术研发一种新型高黏沥青,通过基质沥青、苯乙烯-丁二烯-苯乙烯嵌段共聚物(SBS)、C_(9)石油树脂(C_(9)PR)、增溶剂等原材料优选,确定了SBS/C_(9)PR高黏沥青的组成材料及剂量方案,结合物理性能、荧光显微、多应力蠕变恢复(MSCR)、低温弯曲梁流变(BBR)和动态剪切流变(DSR)实验,并与主流高黏沥青的物理性能、相态结构、高低温流变性能和储存稳定性进行比较。结果表明,SBS/C_(9)PR高黏沥青的组成材料及掺量方案为:SK70^(#)基质沥青;SBS改性剂(LG501∶LG411=1∶1)、C_(9)PR_3、增溶剂(糠醛抽出油)和交联剂(硫磺)掺量分别为4%、5%、2%和1‰;与普通SBS,以及TPS和SINOTPS高黏沥青相比,SBS/C_(9)PR高黏沥青相态分布更加均匀,因为C_(9)PR和增溶剂增加了SBS与沥青的相容性,从而使其表现出更优的储存稳定性;MSCR实验表明,SBS/C_(9)PR高黏沥青具有良好的高温和低温流变性能,高温分级为PG64E,适用于路面温度不超过64℃的极重交通沥青路面。A new type of high viscosity modified asphalt was developed by blending and composite modification technology.By optimizing raw materials such as base asphalt,styrene-butadiene-styrene block copolymer(SBS)copolymer,C_(9)petroleum resin(PR)and solvent,the composition material and dosage scheme of SBS/C_(9)PR were determined.Combined with physical properties,fluorescence microscopy,multi-stress creep recovery(MSCR)and dynamic shear rheology(DSR)tests,the physical properties,phase structure,high temperature rheological properties and storage stability of SBS/C_(9)PR were compared with those of Japanese TPS and domestic SINOTPS high-viscosity asphalt.The results shown that the recommended SBS/C_(9)PR compositions and dosage schemes were SK70 base asphalt,SBS modifier(LG501∶LG411=1∶1),C_(9)PR_3,solubilizer(furfural extract oil)and crosslinking agent(sulfur)with 4%,5%,2%and 1‰,respectively.The phase distribution of SBS/C_(9)PR was more uniform,and the compatibility between SBS and asphalt was increased by C_(9)PR and solvent addition,thus showing better storage stability.SBS/C_(9)PRhad good rheological properties at high temperature.It was classified as PG64Eat high temperature.It was suitable for extremely heavy traffic asphalt pavement whose pavement temperature did not exceed 64℃.

关 键 词：道路工程 高黏沥青 复合改性 性能研究 高温性能 相态分析 

分 类 号：U416[交通运输工程—道路与铁道工程]