CN109694586A - 一种抗车辙型餐饮废油生物沥青的制备方法 - Google Patents

一种抗车辙型餐饮废油生物沥青的制备方法 Download PDF

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CN109694586A
CN109694586A CN201811617794.0A CN201811617794A CN109694586A CN 109694586 A CN109694586 A CN 109694586A CN 201811617794 A CN201811617794 A CN 201811617794A CN 109694586 A CN109694586 A CN 109694586A
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cooking oil
waste cooking
biological asphalt
oil biological
asphalt
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王超
谢亭亭
王阳
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Beijing University of Technology
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Beijing University of Technology
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L95/00Compositions of bituminous materials, e.g. asphalt, tar, pitch
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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Abstract

一种抗车辙型餐饮废油生物沥青的制备方法,是一种通过在普通餐饮废油生物沥青中加入有机化蒙脱土进行复合改性,从而具备较好高温抗车辙性能的生物沥青制备方法。它解决了目前普通餐饮废油生物沥青普遍存在的高温环境下抗变形(车辙)能力较差的技术缺点,改善了餐饮废油生物沥青的耐高温性能。本发明在餐饮废油生物沥青内掺入不同质量比例的有机化蒙脱土,通过室内多应力蠕变恢复试验,证明了有机化蒙脱土的添加明显提升了餐饮废油生物沥青的高温抗车辙能力。

Description

一种抗车辙型餐饮废油生物沥青的制备方法
技术领域
本发明属于建筑材料领域,它是一种在高温环境下具备较好抗变形(车辙)能力的餐饮废油生物沥青制备方法。
背景技术
随着传统的化石能源储量日趋减少以及世界范围内对环境保护的日益重视,部分发达国家已经开始致力于生物质资源导向型经济的构建。生物质资源具有来源广泛、可再生、环境友好及成本低廉等特点,其总体可以分为植物和非植物两大类,植物类主要包括树木、农作物、藻类等;非植物类主要包括动物排泄物、动物尸体、动物脂肪以及工业和生活垃圾。目前研究表明,不同生物质来源制备的生物沥青无论是完全取代石油沥青还是部分替代石油沥青,其在高温稳定性、低温抗裂性、抗老化性能上存在不同程度的技术问题,如何进一步全面提升生物沥青各个温度环境下路用性能是今后的主要研究方向。
发明内容
将餐饮废油生物油作为改性剂掺入石油沥青制备餐饮废油生物沥青,可以有效提高餐饮废油的循环再利用价值,但近期研究表明,普通餐饮废油生物沥青的高温抗变形能力与石油沥青相比较差,直接应用于道路建设和养护将会有产生路面车辙变形的隐患。因此,本发明的目的即为发明一种在高温环境下具备较好抗变形(车辙)能力的餐饮废油生物沥青制备方法,并通过高温蠕变恢复流变学试验方法加以证明。本发明的具体实施过程和分析方法如下:
(1)将餐饮废油生物油在高速剪切设备中以110℃~130℃、2000~3000转/分钟的工况搅拌30~40分钟进行预处理,通过预处理可以有效除去生物油中的水分及轻质组分;
(2)将经过预处理的生物油与普通石油沥青分别以1:100至5:100质量比进行混合,制备得到普通餐饮废油生物沥青;
(3)将有机化蒙脱土分别与此餐饮废油生物沥青以2:100至8:100质量比进行混合,制备得到复合改性餐饮废油生物沥青。
(4)将以上制备好的各种沥青样品(含普通石油沥青)进行多重应力蠕变恢复试验,试验中选用0.1kPa和3.2kPa两种蠕变应力水平进行连续测试,每个应力水平重复进行10个1秒蠕变加载和9秒卸载恢复周期,试验总时间为200秒。分别根据两个应力水平下的累积剪切应变评价沥青的高温抗变形能力。
附图说明
图1是7种沥青的多应力蠕变恢复试验结果对比图。
具体实施方式
具体实施方式一:本实施方式将餐饮废油生物油在高速剪切设备中以120℃、2000转/分钟的工况搅拌30分钟进行预处理;将经过预处理的生物油与普通石油沥青分别以1:100质量比进行混合,制备得到普通餐饮废油生物沥青;在此普通餐饮废油生物沥青中加入有机化蒙脱土(有机化蒙脱土:普通餐饮废油生物沥青=5:100),制备得到复合改性餐饮废油生物沥青。其多应力蠕变恢复试验结果如图1所示,不同蠕变应力下测得的累积剪切应变结果如表1所示。
具体实施方式二:本实施方式与具体实施方式一不同在于,将经过预处理的生物油与普通石油沥青分别以3:100质量比进行混合,制备得到普通餐饮废油生物沥青,其他与具体实施方式一相同。其多应力蠕变恢复试验结果如图1所示,不同蠕变应力下测得的累积剪切应变结果如表1所示。
具体实施方式三:本实施方式与具体实施方式一不同在于,将经过预处理的生物油与普通石油沥青分别以5:100质量比进行混合,制备得到普通餐饮废油生物沥青,其他与具体实施方式一相同。其多应力蠕变恢复试验结果如图1所示,不同蠕变应力下测得的累积剪切应变结果如表1所示。
表1 7种不同沥青的剪切应变实测结果

Claims (2)

1.一种抗车辙型餐饮废油生物沥青的制备方法,其特征为首先将餐饮废油生物油在高速剪切设备中以110℃~130℃、2000~3000转/分钟的工况预处理30~40分钟;然后,将经过预处理的生物油与普通石油沥青以1:100至5:100质量比进行混合,制备得到餐饮废油生物沥青;最后将有机化蒙脱土分别与此餐饮废油生物沥青以2:100至8:100质量比进行混合,制备得到抗车辙型餐饮废油生物沥青。
2.根据权利要求1所述的制备方法,其特征为通过分析多应力蠕变恢复试验中剪切应变的变化来量化表征此餐饮废油生物沥青或抗车辙型餐饮废油生物沥青的高温抗变形能力。
CN201811617794.0A 2018-12-28 2018-12-28 一种抗车辙型餐饮废油生物沥青的制备方法 Pending CN109694586A (zh)

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