Adhesive behavior of a calcium carbonate particle to solid walls having different hydrophilic characteristics
Adhesive behavior of a calcium carbonate particle to solid walls having different hydrophilic characteristics
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DOI：
10.1016/j.ijheatmasstransfer.2015.08.068
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发表时间：
2016-01-01
影响因子：
5.2
通讯作者：
Shibata, Yutaka
中科院分区：
文献类型：
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作者：
Hidema, Ruri;Toyoda, Takafumi;Shibata, Yutaka
为了研究结垢机理，已经研究了碳酸钙颗粒在具有不同亲水/疏水特性的各种壁上的粘附行为。首先，通过原子力显微镜测量粘附力，粘附力随着壁的亲水性而减小。其次，随时间测量每个板上的结垢现象。在疏水性表面、裸铜板的情况下，粘附碳酸钙晶体的数量增加，并且达到恒定值。另一方面，在亲水性表面的情况下，玻璃板和亲水性涂覆的铜、碳酸钙晶体粘附数小时，然后从板上除去晶体。还通过X射线衍射仪分析了每个板上的碳酸钙晶体类型。由于板的亲水/疏水特性，晶体类型不同。结果表明，对换热器壁面进行亲水处理，可以有效地控制换热器的结垢现象。(C)2015爱思唯尔有限公司版权所有。
In order to investigate a fouling mechanism, adhesion behavior of a calcium carbonate particle onto various walls having different hydrophilic/hydrophobic characteristics have been studied. First, adhesion force was measured by atomic force microscope, which decreases with hydrophilicity of walls. Second, fouling phenomena on each plate was measured over time. In the case of the hydrophobic surface, bare copper plate, adhesive calcium carbonate crystal was increased, and the amounts reached the constant values. On the other hand, in the case of the hydrophilic surface, glass plate and hydrophilic coated copper, calcium carbonate crystal was adhered for several hours, then the crystal was removed from the plates. Crystal types of calcium carbonate on each plate were also analyzed by a X-ray diffractometer. The crystal type was varied due to the hydrophilic/hydrophobic characteristics of the plates. From the results, it was expected that the hydrophilic treatments to wall surfaces in heat exchanger might be useful to control fouling phenomena. (C) 2015 Elsevier Ltd. All rights reserved.