• 首页
  • 期刊介绍
  • 编委会
  • 征稿启事
  • 期刊订阅
  • 相关下载
  • 联系我们
紫外吸收剂插层蒙脱土对沥青老化性能的影响
Effect of Ultraviolet Absorber Intercalated Montmorillonite on Aging Properties of Asphalt
投稿时间:2020-02-29  修订日期:2020-04-05
DOI:103969/j.issn.1007 9629202102019
中文关键词:  沥青  紫外吸收剂  蒙脱土  热氧老化  紫外光老化
英文关键词:bitumen  ultraviolet absorber  montmorillonite  thermo oxidative aging  ultraviolet aging
基金项目:国家自然科学基金资助项目(51508032);吉林省交通运输科技项目(2018 1 7);山西省公路局科技项目(2019 1 2);中央高校基本科研业务费资助项目(300102219216)
              
作者单位
冯振刚
FENG Zhengang
长安大学公路学院,陕西西安710064
School of Highway, Changan University, Xian 710064, China
张沛
ZHANG Pei
长安大学公路学院,陕西西安710064
School of Highway, Changan University, Xian 710064, China
孙思敖
SUN Siao
长安大学公路学院,陕西西安710064
School of Highway, Changan University, Xian 710064, China
栗培龙
LI Peilong
长安大学公路学院,陕西西安710064
School of Highway, Changan University, Xian 710064, China
李新军
LI Xinjun
长安大学公路学院,陕西西安710064
School of Highway, Changan University, Xian 710064, China
摘要点击次数: 112
全文下载次数: 0
中文摘要:
      采用有机插层剂对钠基蒙脱土进行有机化处理,得到有机蒙脱土(OMMT),分别将其与不同类型的紫外吸收剂(UVA)进行复合插层,制备得到UVA插层OMMT,并通过X射线衍射试验对UVA插层OMMT的结构进行了表征;同时通过熔融共混法,制备了UVA插层OMMT改性沥青,并采用常规性能试验、薄膜烘箱老化试验和紫外光(UV)老化试验,研究了UVA插层OMMT改性沥青的物理性能、耐热氧老化性能和耐UV老化性能,评价了不同类型UVA插层OMMT对沥青耐老化性能的影响.结果表明:不同类型UVA插层OMMT对沥青的耐热氧老化性能和耐UV老化性能均具有改善作用,其中UV328插层OMMT改性沥青和UV326插层OMMT改性沥青的耐老化性能较优,原因一是OMMT的片层结构阻止了热和氧向沥青内部扩散,原因二是UV328插层OMMT和UV326插层OMMT具有较大的插层率,从而增强了UVA插层OMMT对紫外光屏蔽与吸收的协同作用.
英文摘要:
      The organic montmorillonite(OMMT) was obtained via intercalation of Na montmorillonite by organic intercalator. Then the ultraviolet absorber(UVA)intercalated OMMT was prepared with different types of UVA and OMMT. The structure of UVA intercalated OMMT was characterized by X ray diffraction(XRD) test. The UVA intercalated OMMT modified asphalt was prepared via melt blending. The physical properties, thermo oxidative aging resistance and ultraviolet(UV) aging resistance of the UVA intercalated OMMT modified asphalt were investigated by conventional physical properties test, thin film oven test(TFOT) and UV aging test, respectively. Based on these, the effect of different types of UVA intercalated OMMT on aging resistance of asphalt was evaluated. The results show that both the thermo oxidative and UV aging resistance of asphalt can be improved by the UVA intercalated OMMT, among which the UV328 intercalated OMMT modified asphalt and UV326 intercalated OMMT modified asphalt show better aging resistance. The reason is that the layered structure of OMMT prevents heat and oxygen from diffusing into the asphalt. On the other hand, the intercalation rate of UV328 intercalated OMMT and UV326 intercalated OMMT is larger, which enhances the synergistic effect on shielding and absorbing UV light of the UVA intercalated OMMT.
查看全文  查看/发表评论  下载PDF阅读器
关闭