苯乙烯-丁二烯-苯乙烯嵌段共聚物改性沥青中改性剂含量的检测方法
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作者单位:

1.长安大学;2.陕西省西安市雁塔区长安大学小寨校区一号教学楼602室

作者简介:

通讯作者:

中图分类号:

U414

基金项目:

国家重点研发计划项目 ;中央高校基本科研业务费专项资金项目


Determination methods for modifier content of SBS modified asphalt
Author:
Affiliation:

1.Chang'2.'3.an University

Fund Project:

National Key Research and Development Plan ;Fundamental Research Funds for the Central Universities

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    摘要:

    SBS掺量是决定SBS改性沥青路用性能的重要因素之一。为了抵制市场上SBS改性沥青中改性剂掺假现象,本文通过国内外文献研究,对目前市场上常用的SBS改性剂含量的检测方法进行了整理总结,其中主要包括物理方法与化学方法,即红外光谱法、荧光显微法、凝胶渗透色谱法、热重分析法、提取分离法、双键滴定法以及电位滴定法。系统梳理了各种方法的基本原理以及实验过程中存在的问题,总结出化学检测方法比传统的物理方法精确度高。由于SBS含量易受到其他因素的干扰,采用单一的检测方法并不能完全地反映出改性剂的含量,因此结合各方法的优点,提出了一种新型的交叉检测方法理念:红外光谱法作为基础的定性判断,采用化学方法进行改性剂含量测定,最终通过其他物理手段排除一切干扰因素。

    Abstract:

    The content of SBS is one of the important factors that determines the pavement performance of SBS modified asphalt. In order to resist the adulteration of modifiers in SBS modified asphalt on the market, through the research of literatures at home and abroad, the commonly used SBS content detected methods are described and summarized, including physical methods and chemical methods: infrared spectroscopy, fluorescence microscopy, gel permeation chromatography, thermogravimetric analysis, extraction separation, double bond titration, and potentiometric titration method. This paper systematically combs the basic principles of various methods and the problems in the experimental process, concludes that the chemical detection method is more accurate than the traditional physical methods. As SBS content is prone to influence by several factors, the content of modifier cannot be fully reflected by using a single detection method. A new cross-detection method is proposed based on the advantages of each method. Infrared spectroscopy is the most basic qualitative judgment. The chemical method is used to determine the modifier content, and finally all other interference factors are eliminated by other physical means.

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引用本文

缑晶,高莉宁. 苯乙烯-丁二烯-苯乙烯嵌段共聚物改性沥青中改性剂含量的检测方法[J]. 科学技术与工程, 2019, 19(36): 54-61.
goujing and. Determination methods for modifier content of SBS modified asphalt[J]. Science Technology and Engineering,2019,19(36):54-61.

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  • 收稿日期:2019-05-05
  • 最后修改日期:2019-06-20
  • 录用日期:2019-07-09
  • 在线发布日期: 2020-01-21
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