一种模拟方法,用于生命周期老化青粘合剂在温度下循环效应的影响
Yiwen Tong1, Yamin Liu2, Xuhui Han2
1Sanming Highway Development Centre, Sanming 365000, China.
Materials (Basel, Switzerland)
|April 24, 2025
概括
一种新的温度循环老化炉试验 (TCAOT) 提供了一种经济高效的青老化方法. 这种方法模拟了短期和长期的衰老,为传统测试提供了可行的替代方案.
科学领域:
- 材料科学 材料科学 材料科学
- 土木工程 土木工程是指土木工程.
- 化学工程是化学工程的重要组成部分.
背景情况:
- 传统的青老化方法,如旋转薄膜炉试验 (RTFOT) 和压力老化容器 (PAV) 有局限性,包括小样本大小,难以清洁和高成本.
- 需要一种更有效,更经济,更可扩展的方法来模拟青在实验室环境中的老化.
研究的目的:
- 引入和验证一种新型设备,即温度循环老化炉试验 (TCAOT),用于生产老化青样本.
- 调查影响TCAOT过程的关键实验参数.
- 为了比较TCAOT老化的青与传统方法老化的青的气质特性.
主要方法:
- 该研究涉及调查TCAOT的各种实验条件,例如热与紫外线老化,温度,样品数量,放置和终止标准.
- 使用TCAOT老化的青的风学特性被测量并与使用RTFOT和PAV老化的青进行比较.
- 确定了特定的TCAOT参数,以有效模拟短期老化 (120分钟的163°C) 和长期老化 (72小时的95°C).
主要成果:
- 在TCAOT可以生产大量的老青经济和高效.
- 在TCAOT中的热老化产生了与UV辐射获得的类似的复杂剪模结果.
- 建立了TCAOT设置,以复制RTFOT (短期) 和PAV (长期) 的老化,延长老化模拟高达15年的路面老化.
结论:
- 温度循环老化炉试验 (TCAOT) 是一种简单,经济和有效的方法,用于模拟短期和长期的青老化.
- 运输和道路建设部门可以采用TCAOT来提高运营效率和降低成本.
- 该方法为研究和质量控制提供了一种可扩展和可靠的方法来获得老青.
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