scholarly journals Corrosion Protection of Q235 Steel Using Epoxy Coatings Loaded with Calcium Carbonate Microparticles Modified by Sodium Lignosulfonate in Simulated Concrete Pore Solutions

Materials ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 1982
Author(s):  
Weilin Liu ◽  
Jiansan Li ◽  
Xiangqi Huang ◽  
Jinye Bi

In this study, calcium carbonate (CaCO3) microparticles having pH-sensitive properties were loaded with sodium lignosulfonate (SLS), a corrosion inhibitor. Scanning electron microscope (SEM), UV–VIS spectrophotometer (UV-vis), X-ray diffraction (XRD), and attenuated total reflection-Fourier-transform infrared spectroscopy (ATR-FTIR) were applied to evaluate the properties of the synthetic microparticles. This material could lead to the release of corrosion inhibitor under different pH conditions of the aqueous media. However, the extent of release of the corrosion inhibitor in the acidic media was higher, leading to enhanced shielding effect of the Q235 steel. These microparticles can serve as anti-corrosion additive for epoxy resin-coated Q235 steel. Electrochemical experiments were used to assess the anti-corrosive ability of the epoxy coatings in simulated concrete pore (SCP) solution, confirming the superior corrosion inhibition of the epoxy coating via incorporation of 5 wt % calcium carbonate microparticles loaded with SLS (SLS/CaCO3). The physical properties of coating specimens were characterized by water absorption, contact angle, adhesion, and pencil hardness mechanical tests.

2021 ◽  
Vol 325 ◽  
pp. 115132
Author(s):  
Yundong Wu ◽  
Lei Guo ◽  
Bochuan Tan ◽  
Wenpo Li ◽  
Fan Zhang ◽  
...  

2014 ◽  
Vol 2014 (6) ◽  
pp. 1001-1009 ◽  
Author(s):  
Hongxia Guo ◽  
Pengzhi Sun ◽  
Zhenping Qin ◽  
Linglong Shan ◽  
Guojun Zhang ◽  
...  

2015 ◽  
Vol 12 (2) ◽  
pp. 375-383 ◽  
Author(s):  
To Thi Xuan Hang ◽  
Nguyen Thuy Duong ◽  
Trinh Anh Truc ◽  
Thai Hoang ◽  
Dinh Thi Mai Thanh ◽  
...  

2016 ◽  
Vol 47 (3) ◽  
pp. 363-376 ◽  
Author(s):  
AA Younis

The purpose of this research is to improve ignition properties and anti-dripping of polyester fabric by using adhesion promoter (AP). The ignition properties of the untreated and treated specimens with durable flame retardant coating and non-durable flame retardant coating were estimated by horizontal flame chamber (UL-94), single-flame source and limiting oxygen index (LOI). The chemical structures of the pre- and final composites have been determined by Fourier transform infrared spectra with attenuated total reflection analysis spectroscopy. The mechanical tests and thermal properties were applied to study their tensile strength and thermal behaviors. The results show that AP has improved the flame retardancy and dripping of PET fabric compared to blank. The char yield increased from 8% to 18%, LOI from 17.5% to 27.5%.


2022 ◽  
Author(s):  
Lauriane Chuzeville ◽  
Frank Boury ◽  
David Duday ◽  
Resmi Anand ◽  
Enzo Moretto ◽  
...  

New understandings in the amorphous calcium carbonate nanoparticle synthesis lead to a final mass concentration increase by a factor of 3.5. The stabilisation in aqueous media is achieved by a 2-minute scalable process using bio-sourced stabilisers.


2020 ◽  
Vol 310 ◽  
pp. 113239 ◽  
Author(s):  
Lei Guo ◽  
Ruilai Zhang ◽  
Bochuan Tan ◽  
Wenpo Li ◽  
Hongyan Liu ◽  
...  

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