Rheological characteristics of synthetic road binders
Rheological characteristics of synthetic road binders
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DOI：
10.1016/j.fuel.2008.01.012
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发表时间：
2008-08-01
期刊：
影响因子：
7.4
通讯作者：
Fichter, Caroline
中科院分区：
文献类型：
--
作者：
Airey, Gordon D.;Mohammed, Musarrat H.;Fichter, Caroline
大多数粘合剂和粘合剂，包括用于沥青混合物生产的粘合剂，目前是通过原油的精炼由石化产品生产的。原油储量是一种有限的资源，这意味着将来可能有必要从替代和可能可再生的来源生产这些材料。这类合适的资源可包括多糖、植物油和蛋白质。本文论述了从将来可能来自可再生资源的单体合成聚合物粘合剂。这些粘合剂由不同分子量的聚丙烯酸乙酯（PEA）、聚丙烯酸乙酯（PMA）和聚丙烯酸丁酯（PBA）组成，它们分别由丙烯酸乙酯、丙烯酸甲酯和丙烯酸丁酯通过原子转移自由基聚合（ATRP）合成。这些粘合剂的基本流变学性质通过动态剪切流变仪（DSR）使用温度和频率扫描的组合来确定。结果表明，PEA具有与100/150针入度沥青相似的流变性能，PMA具有与10/20针入度沥青相似的流变性能，而PBA由于其高粘性和低复模量，不能单独用作沥青结合料。合成粘合剂还与常规针入度级沥青组合以产生一系列沥青-合成聚合物粘合剂掺合物。将这些共混物按质量比1：1或3：1配料，并进行与合成粘合剂相同的DSR流变测试。由较软的沥青（70/100 pen或100/150 pen）与硬合成粘合剂（PMA）组成的共混物倾向于更相容，因此稳定，并产生结合两种组分的性质的流变性质。合成粘合剂，特别是延长沥青样品（共混物）产生的流变性能显示出与弹性体SBS PMB相似的特性，尽管它们的精确粘弹性不相同。(c)2008爱思唯尔有限公司版权所有。
Most adhesives and binders, including binders for asphalt mixture production, are presently produced from petrochemicals through the refining of crude oil. The fact that crude oil reserves are a finite resource means that in the future it may become necessary to produce these materials from alternative and probably renewable sources. Suitable resources of this kind may include polysaccharides, plant oils and proteins. This paper deals with the synthesis of polymer binders from monomers that could in future be derived from renewable resources. These binders consist of polyethyl acrylate (PEA) of different molecular weight, polynaethyl acrylate (PMA) and polybutyl acrylate (PBA), which were synthesised from ethyl acrylate, methyl acrylate and butyl acrylate, respectively, by atom transfer radical polymerization (ATRP). The fundamental theological properties of these binders were determined by means of a dynamic shear rheometer (DSR) using a combination of temperature and frequency sweeps. The results indicate that PEA has theological properties similar to that of 100/150 penetration grade bitumen, PMA similar theological properties to that of 10/20 penetration grade bitumen, while PBA, due to its highly viscous nature and low complex modulus, cannot be used on its own as an asphalt binder. The synthetic binders were also combined with conventional penetration grade bitumen to produce a range of bitumen-synthetic polymer binder blends. These blends were batched by mass in the ratio of 1:1 or 3:1 and subjected to the same DSR theological testing as the synthetic binders. The blends consisting of a softer bitumen (70/100 pen or 100/150 pen) with a hard synthetic binder (PMA) tended to be more compatible and therefore stable and produced rheological properties that combined the properties of the two components. The synthetic binders and particularly the extended bitumen samples (blends) produced theological properties that showed similar characteristics to elastomeric SBS PMBs, although their precise viscoelastic properties were not identical. (c) 2008 Elsevier Ltd. All rights reserved.