The synthesis of a core–shell hybrid composite micro-sphere with controllable homogenous or heterogeneous multi-shell structure by multiple-growth via a combination method

Cao, Min‐Jie; Jin, Minchao; Jian-quan, Qiu; Zhao, Xiang; Liu, Yushan; Zhang, Xue Ling; Cai, Qiang; Zhu, Weiyao

doi:10.1016/j.colsurfa.2013.12.073

Cited by 2 publications

(2 citation statements)

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Section: Resultsmentioning

confidence: 99%

“…An XRD analysis was performed on the synthesized SiO 2 particles in order to determine their phase composition. As shown in Figure 3c, a typical broad peak is found at the vicinity of 21 • , which suggests the amorphous state of the SiO 2 particles synthesized via the modified Stober method [45][46][47][48]. Figure 4 illustrates both the thermal analysis curve for a coating without fillers and the composite coatings containing various concentrations of SiO2.…”

Section: Characterization Of Sio 2 and Composite Coatingmentioning

confidence: 95%

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Revealing the Impact of Micro-SiO2 Filer Content on the Anti-Corrosion Performance of Water-Borne Epoxy Resin

Fan,

Yang,

Cao

et al. 2023

Polymers

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Due to green development in recent years, water-borne epoxy resins (WBE) have become increasingly popular since they generate the lowest level of volatile organic compounds (VOC) during curing. However, because of the large surface tension of water, it is easy to produce voids and cracks during the curing process of the coating. An electrochemical strategy was used in this study to assess the impact of different SiO2 content on the corrosion performance of a WBE coating, in which micron spherical SiO2 particles were synthesized in a liquid phase reduction. The results showed that the synthesized micron spherical SiO2 particles were about 800 ± 50 nm in diameter and in an amorphous state. By hydrophilizing the surfaces of these SiO2 particles, uniform dispersion in an aqueous solvent and a WBE can be achieved. It is important to note that adding a small or excessive amount of SiO2 to a coating will not improve corrosion resistance and may even reduce corrosion resistance. With the appropriate modification of SiO2, corrosion resistance of composite coatings is greatly enhanced, as is the adhesion between the coatings and the metallic substrates. Because the appropriately modified SiO2 can effectively fill the pores that are formed during the curing process, a corrosive medium is less likely to react with the matrix when the medium comes into contact with the matrix. Based on their incorporation content of 3 wt.%, their corrosion resistance is the best after 16 cycles of AC-DC-AC accelerated corrosion tests.

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