Aluminum dihydric tripolyphosphate/polypyrrole-functionalized graphene oxide waterborne epoxy composite coatings for impermeability and corrosion protection performance of metals

Zhu, Qingsong; Huang, Yuxiang; Li, Yilong; Zhou, Manting; Xu, Shan; Liu, Xianhu; Liu, Chuntai; Yuan, Bingnan; Guo, Zhanhu

doi:10.1007/s42114-021-00265-6

Cited by 104 publications

(27 citation statements)

References 25 publications

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“…Epoxy resins are widely used in many areas of coatings, , sealants, adhesives and so on due to the high chemical stability, strong adhesion to metal surfaces, low shrinkage, and superior mechanical property. , Conventional epoxy anticorrosive coatings are typical solvent-borne and contain high levels of volatile organic compounds (VOCs), which cause serious environmental pollution and endanger human health. Nowadays, the waterborne epoxy (WEP) coating has attracted widespread attention due to the low levels of VOCs and environmental friendliness .…”

Section: Introductionmentioning

confidence: 99%

Hexagonal Boron Nitride/Polyaniline Nanocomposites for Anticorrosive Waterborne Epoxy Coatings

Tang

Hou

Wang

et al. 2021

ACS Appl. Nano Mater.

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The hexagonal boron nitride (h-BN) nanosheets have been used as nanofillers to improve the barrier properties of the waterborne epoxy (WEP) coatings. However, the h-BN nanosheets tend to agglomerate, which limits their anticorrosion applications. In this paper, the h-BN/polyaniline (h-BN/PANI) nanocomposites were prepared by the in situ polymerization of aniline on the surfaces of the h-BN nanosheets, which were further used to improve the anticorrosion performance of the WEP coatings. The structures of the as-prepared h-BN/PANI nanocomposites were investigated by scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectroscopy, thermogravimetric analysis, and X-ray photoelectron spectroscopy. The anticorrosion performances of the coatings were evaluated by electrochemical impedance spectroscopy. After immersion in 3.5 wt % NaCl solution for 28 days, the macro-morphologies and elemental changes of the substrate surfaces were analyzed by a 3D digital microscope and an energy-dispersive spectroscope, respectively. The results showed that the WEP coatings with the h-BN/PANI nanocomposites, especially that with 2 wt % h-BN/PANI nanocomposites, exhibited remarkably reinforced anticorrosion performance compared to the pure WEP coating. For the WEP coating, the coating with 1 wt % PANI, and the coating with 1 wt % h-BN, the substrates have been completely corroded. However, there was no obvious corrosion region for the coating containing 2 wt % h-BN/PANI nanocomposites. The superior anticorrosion performance of the coatings with h-BN/PANI nanocomposites was mainly attributed to the synergistic effect of the well-dispersed h-BN/PANI nanocomposites as the physical barrier and PANI as the corrosion inhibitor in this system.

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Section: Introductionmentioning

confidence: 99%

Hexagonal Boron Nitride/Polyaniline Nanocomposites for Anticorrosive Waterborne Epoxy Coatings

Tang

Hou

Wang

et al. 2021

ACS Appl. Nano Mater.

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“…CPCs can be fabricated using a range of methods such as dispersing conductive fillers into flexible polymer matrices [ 16 ], depositing [ 17 ], transferring [ 18 ], or printing a conductive layer on prefabricated flexible polymer substrates [ 2 ]. However, the CPCs-based strain sensors are subject to low sensitivity and narrow working ranges because their conductive paths are often fragile and thus likely to be broken during stretching [ 19 , 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

Carbon Nanotube Coated Fibrous Tubes for Highly Stretchable Strain Sensors Having High Linearity

Zhou

et al. 2022

Nanomaterials

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Strain sensors are currently limited by an inability to operate over large deformations or to exhibit linear responses to strain. Producing strain sensors meeting these criteria remains a particularly difficult challenge. In this work, the fabrication of a highly flexible strain sensor based on electrospun thermoplastic polyurethane (TPU) fibrous tubes comprising wavy and oriented fibers coated with carboxylated multiwall carbon nanotubes (CNTs) is described. By combining spraying and ultrasonic-assisted deposition, the number of CNTs deposited on the electrospun TPU fibrous tube could reach 12 wt%, which can potentially lead to the formation of an excellent conductive network with high conductivity of 0.01 S/cm. The as-prepared strain sensors exhibited a wide strain sensing range of 0–760% and importantly high linearity over the whole sensing range while maintaining high sensitivity with a GF of 57. Moreover, the strain sensors were capable of detecting a low strain (2%) and achieved a fast response time whilst retaining a high level of durability. The TPU/CNTs fibrous tube-based strain sensors were found capable of accurately monitoring both large and small human body motions. Additionally, the strain sensors exhibited rapid response time, (e.g., 45 ms) combined with reliable long-term stability and durability when subjected to 60 min of water washing. The strain sensors developed in this research had the ability to detect large and subtle human motions, (e.g., bending of the finger, wrist, and knee, and swallowing). Consequently, this work provides an effective method for designing and manufacturing high-performance fiber-based wearable strain sensors, which offer wide strain sensing ranges and high linearity over broad working strain ranges.

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“…Epoxy composites have been widely used in microelectronic and optoelectronic devices as a substrate for printed circuit boards, packaging materials, and specific adhesives. [1][2][3] To satisfy the increasing demand of electronic components for dissipating the heat created during working, mesogenic groups were introduced to epoxy yielding liquid crystalline epoxy (LCE), [4][5][6][7][8][9] which is a common method for producing intrinsically thermally conductive polymers including liquid crystalline polyimide. 10 When LCE is cured, the mesogen groups spontaneously aggregate and form microscopically ordered structures.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of intrinsic thermal conductivity of liquid crystalline epoxy through the strategy of interlocked polymer networks

Yuan

Peng

Rong

et al. 2022

Mater. Chem. Front.

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Aluminum dihydric tripolyphosphate/polypyrrole-functionalized graphene oxide waterborne epoxy composite coatings for impermeability and corrosion protection performance of metals

Cited by 104 publications

References 25 publications

Hexagonal Boron Nitride/Polyaniline Nanocomposites for Anticorrosive Waterborne Epoxy Coatings

Hexagonal Boron Nitride/Polyaniline Nanocomposites for Anticorrosive Waterborne Epoxy Coatings

Carbon Nanotube Coated Fibrous Tubes for Highly Stretchable Strain Sensors Having High Linearity

Enhancement of intrinsic thermal conductivity of liquid crystalline epoxy through the strategy of interlocked polymer networks

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