含有二氧化硅纳米颗粒的纳米涂层具有不粘性,可轻松从低碳钢表面剥离汽车油漆

IF 3.2 3区 材料科学 Q2 ENGINEERING, CHEMICAL International Journal of Adhesion and Adhesives Pub Date : 2024-07-22 DOI:10.1016/j.ijadhadh.2024.103800
Fahimeh Farid Shayegan , Reza Babaei , Alireza Mizban
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引用次数: 0

摘要

使用介孔二氧化硅纳米粒子(SiO2 NPs)增强的不粘乳胶涂层显示出良好的剥离性能。为了观察 SiO2 NPs 的效果,将含有和不含 SiO2 NPs 的涂层涂覆在作为基材的空心低碳钢梁上。使用透射电子显微镜(TEM)、X 射线衍射(XRD)图谱和布鲁纳-艾美特-泰勒(BET)分析法测定了 SiO2 NPs 的晶粒大小、晶相结构、比表面积(SSA)和孔径分布。场发射扫描电子显微镜(FESEM)和能量色散 X 射线光谱(EDS)用于观察涂层样品的表面形态和成分。测量了样品表面三种不同液体的接触角,即 1-溴萘(非极性)、甲酰胺和蒸馏水(极性),以计算单位面积表面能和滞后接触角。结果表明,添加 SiO2 NPs 增加了表面的疏水性,降低了表面能。这种涂层的应用之一是保护表面,防止油漆粘在上面。为此,在低碳钢基底上涂覆了含有和不含有 SiO2 NPs 的涂层,然后用树脂基汽车涂料进行喷涂。脱模测试表明,添加二氧化硅氮磷后,附着力会降低。此外,为了了解这种技术在工业中的应用,我们将含有二氧化硅氮磷的涂层涂在滑板上,并将其放置在汽车工厂的涂装线上 12 个工作日。从生产线上取下滑橇后,与裸滑橇相比,涂层及其上的油漆很容易从滑橇上剥离,无论是用抹刀手工剥离还是用水射流清洗机(100 巴,喷射角 45°)清洗。
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Nano coating containing SiO2 nanoparticles with non-stick properties for easy peeling of car paint from mild steel surfaces

Non-stick latex coating enhanced with mesoporous silica nanoparticles (SiO2 NPs) showed promising peeling properties. In order to see the effect of SiO2 NPs, coatings with and without SiO2 NPs applied on pieces of a hollow section mild steel beam as substrate. The grain size, crystal phase structure, specific surface area (SSA) and pore size distribution of the SiO2 NPs was determined using transmission electron microscopy (TEM), X-ray diffraction (XRD) pattern and Brunauer-Emmett-Teller (BET) analysis. Field emission scanning electron microscope (FESEM) and energy-dispersive X-ray spectroscopy (EDS) was used to observe the surface morphology and composition of the coated samples. The contact angle was measured for three different liquids on the surface of the samples namely, 1-bromonaphthalene (nonpolar), formamide and distilled water (polar) in order to calculate the surface energies per unit area and hysteresis contact angles. The result showed that adding SiO2 NPs increases the hydrophobicity and decreases the surface energy of the surface. One of the applications of such a coating is to protect the surface from paint sticking to it. For this purpose, the coating with and without SiO2 NPs is applied on a mild steel substrate and then painted by resin-based automotive paint. The pull off test showed that the adhesion is reduced by addition of SiO2 NPs. In addition, to see this application in industry, the coating with SiO2 NPs is applied to a skid and placed in the painting line of an automotive factory for 12 working days. After removing from the line, the coating and the paint on it were easily peeled from the skid either manually with a spatula or by a water jet cleaning machine (100 bar at spraying angle of 45°) compared to a bare skid.

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来源期刊
International Journal of Adhesion and Adhesives
International Journal of Adhesion and Adhesives 工程技术-材料科学:综合
CiteScore
6.90
自引率
8.80%
发文量
200
审稿时长
8.3 months
期刊介绍: The International Journal of Adhesion and Adhesives draws together the many aspects of the science and technology of adhesive materials, from fundamental research and development work to industrial applications. Subject areas covered include: interfacial interactions, surface chemistry, methods of testing, accumulation of test data on physical and mechanical properties, environmental effects, new adhesive materials, sealants, design of bonded joints, and manufacturing technology.
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