Synthesis of methyltriethoxysilane-modified calcium zinc phosphate nanopigments toward epoxy nanocomposite coatings: Exploring rheological, mechanical, and anti-corrosion properties

被引：10

作者：

Haddadi, Seyyed Arash ^{[1
]}

Alibakhshi, Eiman ^{[2
]}

Motlagh, Akram Labani ^{[3
]}

Ramazani, Ahmad S. A. ^{[4
]}

Ghaderi, Mohammad ^{[4
]}

Ramezanzadeh, Bahram ^{[2
]}

Mahdavian, Mohammad ^{[2
]}

Arjmand, Mohammad ^{[1
]}

机构：

[1] Univ British Columbia, Sch Engn, Nanomat & Polymer Nanocomposites Lab, Kelowna, BC V1V 1V7, Canada

[2] Inst Color Sci & Technol, Surface Coating & Corros Dept, Tehran, Iran

[3] Sharif Univ Technol, Dept Chem, Tehran, Iran

[4] Sharif Univ Technol, Dept Chem & Petr Engn, Tehran 111559465, Iran

来源：

PROGRESS IN ORGANIC COATINGS | 2022年 / 171卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Calcium zinc phosphate; Surface modification; Corrosion protection; Epoxy coating; SURFACE MODIFICATION; CORROSION PROTECTION; POLYMER NANOCOMPOSITES; ADHESION STRENGTH; CARBON NANOTUBES; MILD-STEEL; PIGMENT; NANOPARTICLES; DISPERSION; PERFORMANCE;

D O I：

10.1016/j.porgcoat.2022.107055

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

In this study, the effects of unmodified calcium zinc phosphate (UCZP) and modified calcium zinc phosphate (MCZP) nanopigments (NPs) on the rheological, mechanical, and corrosion protection performance (CPP) of the epoxy (EP) coatings were investigated. Transmission electron microscopy (TEM) coupled with energy-dispersive X-ray spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS) were used to study morphology and overall chemical structure of synthesized calcium zinc phosphate (CZP) NPs, respectively. The grafting of methyltriethoxysilane (MTES) molecules on the surface of CZP was assessed using Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), and contact angle (CA) measurements. The rheologicalmechanical properties and anti-corrosion ability of the prepared coatings were assessed by rheometric mechanical spectroscopy (RMS), tensile test, micro-Vickers hardness (MVH) measurements, salt spray, electrochemical impedance spectroscopy (EIS) and pull-off tests. A 1.3. increase in CA was seen for MCZP NPs after silanization. The total resistance (Rt = coating resistance (Rc) + charge transfer resistance (Rct)) of EP coating increased from 0.4 MO cm2 to 50.1 and 25,118.8 MO cm2 in the presence of UCZP and MCZP NPs, respectively, after 50 days of immersion in 3.5 wt% NaCl solution. A 32.6 % and 24.6 % reduction in the adhesion loss were observed for the UCZP and MCZP NPs filled EP coatings, respectively.

引用

页数：17