Nano-SiO2/UP复合改性沥青配方研究
Study on the Formulation of Nano-SiO2/UP Composite Modified Asphalt
王珍华 1汤祖杰 2陈昌晴 3江林英 1王瑞祥4
作者信息
- 1. 龙岩靖永高速公路有限责任公司,福建龙岩 364000
- 2. 福建省交通建设质量安全中心,福建福州 350001
- 3. 福建省路桥建设集团有限公司,福建福州 350002
- 4. 长安大学,陕西西安 710064
- 折叠
摘要
一般的UP固化物往往存在韧性较差等问题,需要对其进行增韧改性.鉴于nano-SiO2/UP复合材料表现出的优异力学性能,且目前未见有研究将其用于改性沥青,对nano-SiO2/UP复合改性沥青的配方(包括nano-SiO2的种类、各类添加剂的掺量等)进行研究,通过拉伸试验、离析试验等确定出nano-SiO2/UP复合改性沥青的最优配比.研究结果表明:nano-SiO2/UP复合改性沥青中的A组分和B组分应由"先掺法"进行制备,其中A组分为UP、引发剂、偶联剂,B组分是由沥青、相容剂等外加剂组成的混合成分;其最优配比为m(A组分)∶m(B组分)=1∶2.6,其中A组分的成分为m(树脂)∶m(A型nano-SiO2)∶m(引发剂)∶m(偶联剂)=100∶3∶4∶3,B组分的构成为m(沥青)∶m(相容剂)=100∶4.
Abstract
Generally,the UP materials will be brittle after curing,which needs toughening modification.In view of the excellent mechanical properties of nano-SiO2/UP composite materials,the formulation of nano-SiO2/UP modified asphalt,including the types of nano-SiO2,the dosage of various additives,etc.was studied in this paper.The optimal ratio of nano-SiO2/UP modified asphalt was determined by tensile test and segregation test.The results showed that component A and component B in nano-SiO2/UP modified asphalt should be prepared by the"first admixing method",in which component A was divided into UP,initiator,and coupling agent,and component B was a mixture composed of asphalt,compatibilizer,and other admixtures.The optimal ratio was m(component A)∶m(component B)=1∶2.6,where the composition of component A was m(UP):m(type A nano-SiO2)∶m(initiator)∶m(coupling agent)=100∶3∶4∶3,and the composition of component B was m(asphalt):m(compatibilizer)=100∶4.
关键词
nano-SiO2/改性沥青/不饱和聚酯树脂Key words
nano-SiO2/modified asphalt/unsaturated polymer resin引用本文复制引用
基金项目
陕西省自然科学基础研究计划项目(2023-JC-YB-418)
龙岩靖永高速公路有限责任公司科技项目(2021LYF17068)
出版年
2024
NETL
NSTL
万方数据