Preparation and properties of multiphase composite enhanced functional organosilicon nano-coatings

IF 5.5 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers Pub Date : 2024-08-20 DOI:10.1016/j.jtice.2024.105717

Peipei Lu , Yiyao Wang , Hongfeng Wang , Wen Zhou , Nianshun Zhao , Shengrong Liu

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Abstract

Background

To improve the inherent stability and environmental compatibility of traditional organosilicon coatings, nano-reinforced composite materials were innovatively designed and synthesized to improve the performance of organosilicon coatings.

Methodology

The silicon dioxide (SiO₂) clusters on the surface of graphene oxide (GO) incorporated with calcium carbonate (CaCO₃) and dicyclohexylamine nitrite (Dn) nanocomposites (GO@SiO₂/CaCO₃/Dn) were prepared successfully. Then nanocomposites were integrated into the coating matrix to comprehensively assess their effects on morphology, mechanics, corrosion resistance, and anti-fouling properties.

Significant findings

Scanning Electron Microscopy (SEM) observations revealed that 4.0 wt.% of the nanocomposite reinforcement led to stratification within the organosilicon coating. The mechanical properties test shows that the hardness, bonding strength, and maximum impact resistance of SiNC2.0 coating is 10.3 HV, 2.8 MPa, and 75 kg·cm, respectively. Electrochemical assessments confirmed that SiNC2.0 displayed superior corrosion resistance, with a corrosion potential (E_corr) of 0.199 V and a corrosion current density (I_corr) of 7.308 × 10^–6 A/cm². Furthermore, the surface free energy of the nano-coatings is calculated in the range of 20–30 mN/m by contact angle measurement, indicating the anti-fouling and self-cleaning of the organosilicon nano-coatings. Long-term immersion in natural lake water further confirms the stability and durability of the SiNC2.0 coating in real environments.

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多相复合增强功能有机硅纳米涂层的制备与性能

背景为了提高传统有机硅涂料的内在稳定性和环境相容性，创新性地设计和合成了纳米增强复合材料，以改善有机硅涂料的性能。方法成功制备了氧化石墨烯（GO）表面的二氧化硅（SiO2）团簇与碳酸钙（CaCO3）和亚硝酸二环己胺（Dn）纳米复合材料（GO@SiO2/CaCO3/Dn）。重要发现扫描电子显微镜（SEM）观察发现，4.0 wt.%的纳米复合材料增强体导致有机硅涂层内部分层。机械性能测试表明，SiNC2.0 涂层的硬度、结合强度和最大抗冲击性分别为 10.3 HV、2.8 MPa 和 75 kg-cm。电化学评估证实，SiNC2.0 具有优异的耐腐蚀性，腐蚀电位（Ecorr）为 0.199 V，腐蚀电流密度（Icorr）为 7.308 × 10-6 A/cm2。此外，通过接触角测量计算出的纳米涂层表面自由能在 20-30 mN/m 之间，这表明有机硅纳米涂层具有防污和自清洁功能。在天然湖水中长期浸泡进一步证实了 SiNC2.0 涂层在实际环境中的稳定性和耐用性。

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来源期刊

Journal of the Taiwan Institute of Chemical Engineers 工程技术-工程：化工

CiteScore

9.10

自引率

14.00%

发文量

362

审稿时长

35 days

期刊介绍： Journal of the Taiwan Institute of Chemical Engineers (formerly known as Journal of the Chinese Institute of Chemical Engineers) publishes original works, from fundamental principles to practical applications, in the broad field of chemical engineering with special focus on three aspects: Chemical and Biomolecular Science and Technology, Energy and Environmental Science and Technology, and Materials Science and Technology. Authors should choose for their manuscript an appropriate aspect section and a few related classifications when submitting to the journal online.