A Novel Preparation Method of Electrically Conductive Adhesives by Powder Spraying Process

Dong, Hongyu; Li, Xin; Dong, Yi; Guo, Shaoqing; Zhao, Liangfu

doi:10.3390/ma12172793

Cited by 8 publications

(4 citation statements)

References 59 publications

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“…Spray coating, which is not limited by the shape and size of parts, is a simple method used to manufacture coatings on various substrates and can be extended in practical applications [34]. From these line charts in Figure 2a-c, it can be easily seen that WCA increase first and then decrease with increasing additive content, which is contrary to the change trend of SA under different additive contents.…”

Section: Fabrication Of the Csc-coatingmentioning

confidence: 97%

Stable and Durable Conductive Superhydrophobic Coatings Prepared by Double-Layer Spray Coating Method

et al. 2021

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Herein, a low cost, durable, and stable conductive superhydrophobic composite coating (CSC coating) was fabricated on a Q345 steel surface by simple double-layer spray coating. The water contact angle (WCA) of the CSC coating was 160° and the sliding angle (SA) was 3°. In addition to its excellent conductivity (3.10 × 103 Ω), the fabricated composite coating had good durability and wear resistance. After 10 sand-washing cycles, the CSC coating surface still exhibited stable superhydrophobicity (149° WCA, 9.5° SA). At 200 g pressure, the surface of the optimized CSC coating still maintained fine superhydrophobicity (150° WCA, 9.2° SA) and conductivity (1.86 × 104 Ω) after 10 abrasion cycles. In addition, it also exhibited fine adhesion (0.307 MPa) between the composite coating and the substrate. This functional superhydrophobic surface can be applied in specialty fields with harsh conditions such as coal mining and petrochemical activities. This new coating may also expand the application fields of superhydrophobic surfaces and have broad practical application prospects.

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Section: Fabrication Of the Csc-coatingmentioning

confidence: 97%

Stable and Durable Conductive Superhydrophobic Coatings Prepared by Double-Layer Spray Coating Method

et al. 2021

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“…In the case of transporting the gas, it condenses into nanostructures under the influence of liquid catalyst nanoparticles. Continuous growth in different environments and its growth diameter are limited by catalyst nanoclusters [22].…”

Section: Laser Pulse Depositionmentioning

confidence: 99%

Simulation of the Conductive Process of Nano ZnO Varistors Based on Animation Plane Form

Liu

2020

Journal of Chemistry

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Among many nano materials and chemical materials, zinc oxide nanomaterials have attracted researchers’ interest because of their high efficiency, low cost, easy preparation, and variable morphology. The purpose of this study is to explore the fabrication and conductive process of nano ZnO varistors under the simulation of an animation plane form. In this study, the chemical vapor deposition method was used to prepare nano ZnO. Then, ZnO nanomaterials were mixed with deionized water to form a suspension. Under the action of a micromechanical stirrer, impurities were removed by heat treatment, and then different amount of water was added to obtain a nano ZnO electrode. The conductive process and electrochemical properties of the nano ZnO electrode were investigated and analyzed. The results show that the pressure ratio of the varistor increases obviously after adding nano ZnO. In the range of 0–30%, the pressure ratio of the ZnO varistor increases with the increase in nano ZnO content. When w (nano ZnO) is 30%, the voltage ratio reaches 1.149 and the oxidation peak current ratio of LD decreases by 6%. Therefore, it is concluded that the electrode of nano ZnO varistor valve sheets maintains good stability for a LD conductivity detection process. It also plays an important role in electrochemical research.

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“…Isotropic ECAs have a high content of conductive filler that exceeds the percolation threshold and they are able to conduct current in all directions (x, y, z), unlike anisotropic and non-conductive ECAs which are conductive in only one direction [ 7 ]. Silver in the form of flakes [ 8 ], powder [ 9 ], nanowires [ 10 ] or dendrites [ 11 ] is the main type of electrically conductive filler which for a long time has been used in ECAs due to its excellent electrical conductivity and thermal stability. However, the minimum content of silver necessary to achieve a sufficient level of electrical conductivity at which a decrease in polymer resistivity is observable, varies from 25 wt % up to even 80 wt % [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

Relationship between Viscosity, Microstructure and Electrical Conductivity in Copolyamide Hot Melt Adhesives Containing Carbon Nanotubes

et al. 2020

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The polymeric adhesive used for the bonding of thermoplastic and thermoset composites forms an insulating layer which causes a real problem for lightning strike protection. In order to make that interlayer electrically conductive, we studied a new group of electrically conductive adhesives based on hot melt copolyamides and multi-walled carbon nanotubes fabricated by the extrusion method. The purpose of this work was to test four types of hot melts to determine the effect of their viscosity on the dispersion of 7 wt % multi-walled carbon nanotubes and electrical conductivity. It was found that the dispersion of multi-walled carbon nanotubes, understood as the amount of the agglomerates in the copolyamide matrix, is not dependent on the level of the viscosity of the polymer. However, the electrical conductivity, analyzed by four-probe method and dielectric spectroscopy, increases when the number of carbon nanotube agglomerates decreases, with the highest value achieved being 0.67 S/m. The inclusion of 7 wt % multi-walled carbon nanotubes into each copolyamide improved their thermal stability and changed their melting points by only a few degrees. The addition of carbon nanotubes makes the adhesive’s surface more hydrophilic or hydrophobic depending on the type of copolyamide used.

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A Novel Preparation Method of Electrically Conductive Adhesives by Powder Spraying Process

Cited by 8 publications

References 59 publications

Stable and Durable Conductive Superhydrophobic Coatings Prepared by Double-Layer Spray Coating Method

Stable and Durable Conductive Superhydrophobic Coatings Prepared by Double-Layer Spray Coating Method

Simulation of the Conductive Process of Nano ZnO Varistors Based on Animation Plane Form

Relationship between Viscosity, Microstructure and Electrical Conductivity in Copolyamide Hot Melt Adhesives Containing Carbon Nanotubes

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