Synthesis of Silane Functionalized Graphene Oxide and Its Application in Anti-Corrosion Waterborne Polyurethane Composite Coatings
Abstract
:1. Introduction
2. Experimental
2.1. Materials
2.2. Synthesis of Silane Functionalized Graphene
2.3. Fabrication of the Composite Coatings
2.4. Characterization
3. Results and Discussion
3.1. Characterization of the PVSQ-GO Composite Material
3.2. Surface Properties and Section Morphology
3.3. Mechanical Performances
3.4. Anticorrosive Performances
4. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Elements | Fe | C | Mn | Si | S | P |
---|---|---|---|---|---|---|
Content (wt.%) | 99.03 | 0.16 | 0.42 | 0.30 | 0.050 | 0.045 |
Sample | Ecorr (V) | Icorr (A/cm2) | ba (mV/dec) | bc (mV/dec) | Rp (Ω·cm2) | IE (%) | vcorr (mm/year) |
---|---|---|---|---|---|---|---|
Bare steel | −0.791 | 7.921 × 10−5 | 143.46 | −198.25 | 4.56 × 102 | — | 0.921 |
Pure WPU | −0.614 | 2.404 × 10−7 | 246.74 | −180.31 | 1.88 × 105 | 99.69 | 2.79 × 10−3 |
0.5 wt.% GO/WPU | −0.539 | 4.366 × 10−7 | 194.64 | −236.84 | 1.06 × 105 | 99.44 | 5.07 × 10−3 |
0.5 wt.% PVSQ-GO/WPU | −0.325 | 7.079 × 10−9 | 233.41 | −160.39 | 5.83 × 106 | 99.99 | 8.96 × 10−5 |
1.0 wt.% PVSQ-GO/WPU | −0.442 | 4.875 × 10−8 | 216.25 | −184.56 | 8.87 × 105 | 99.93 | 5.76 × 10−4 |
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Chen, C.; Wei, S.; Xiang, B.; Wang, B.; Wang, Y.; Liang, Y.; Yuan, Y. Synthesis of Silane Functionalized Graphene Oxide and Its Application in Anti-Corrosion Waterborne Polyurethane Composite Coatings. Coatings 2019, 9, 587. https://doi.org/10.3390/coatings9090587
Chen C, Wei S, Xiang B, Wang B, Wang Y, Liang Y, Yuan Y. Synthesis of Silane Functionalized Graphene Oxide and Its Application in Anti-Corrosion Waterborne Polyurethane Composite Coatings. Coatings. 2019; 9(9):587. https://doi.org/10.3390/coatings9090587
Chicago/Turabian StyleChen, Chao, Shicheng Wei, Bin Xiang, Bo Wang, Yujiang Wang, Yi Liang, and Yue Yuan. 2019. "Synthesis of Silane Functionalized Graphene Oxide and Its Application in Anti-Corrosion Waterborne Polyurethane Composite Coatings" Coatings 9, no. 9: 587. https://doi.org/10.3390/coatings9090587