Dual layer structural thermoplastic polyester powder coating film and its weathering resistance

Takeshita, Yukitoshi; Kamisho, Takuya; Sakata, Seizo; Sawada, Takashi; Watanuki, Yoshikazu; Nishio, Ryuichi; Ueda, Toshinobu

doi:10.1002/app.38299

Cited by 6 publications

(5 citation statements)

References 7 publications

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“…Although PEN and other polymeric substrates were widely used and proposed for flexible electronics, they were criticized for the disadvantage of weathering resistance [25]. Consequently, we included an FR4 substrate, which is chemically inert, water-proof, ultraviolet-resistive, and mechanically strong [26], with electroplated copper (Cu) for the second evaluation to understand the influence of substrate material on the EM responses.…”

Section: Substrate Propertymentioning

confidence: 99%

Inkjet-patterned porous split-ring resonator and its performance study on metamaterial application

Huang¹,

Lo²

2018

J. Micromech. Microeng.

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This work demonstrated an inkjet-printed split-ring resonator (SRR) on a polymeric substrate to support the metamaterial application, particularly an invisibility cloak. Comprehensive simulation, experiment, and analysis were conducted in this work to understand the variation tendencies of the electromagnetic (EM) response of the SRR array from the contribution of various material properties and environmental contributions. Results suggested that although the inkjet-printed SRR was composed of porous metallic nanoparticles, it was capable of coupling the EM energy with a linear relationship between the effective metal thickness and the EM intensity. Additional studies indicated that simulation would not completely reflect the SRR performance in reality because of the limited function on array expansion. Evaluations also suggested a minimum SRR repetition in simulation to alleviate the unpredictable energy loss from the limited array size in facilitated prototyping by inkjet printing.

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Section: Substrate Propertymentioning

confidence: 99%

Inkjet-patterned porous split-ring resonator and its performance study on metamaterial application

Huang¹,

Lo²

2018

J. Micromech. Microeng.

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“…Various techniques have been developed to apply powder coatings, but they feature high temperatures to induce the powder to flow and cure. For example, when fluidized beds were used, the plates were preheated to 300–350 °C, dipped into the bed of fluidized powders for melting and film formation. , In the flame spray process, powders were introduced into the flame of combusted fuel (in excess of 2900 K) via an inert carrier gas . Electrostatic spray utilizes electrical energy in the form of plasma or an arc to apply powders onto the metal substrate, but the deposition still requires baking in a hot-air oven with temperatures between 300 and 400 °C to consolidate the powders into a continuous coating. , While using electrostatic forces and high-temperature baking significantly improves deposition efficiency and film formation, potential concerns remain.…”

Section: Introductionmentioning

confidence: 99%

“…For example, when fluidized beds were used, the plates were preheated to 300−350 °C, dipped into the bed of fluidized powders for melting and film formation. 11,12 In the flame spray process, powders were introduced into the flame of combusted fuel (in excess of 2900 K) via an inert carrier gas. 13 Electrostatic spray utilizes electrical energy in the form of plasma or an arc to apply powders onto the metal substrate, but the deposition still requires baking in a hot-air oven with temperatures between 300 and 400 °C to consolidate the powders into a continuous coating.…”

Section: ■ Introductionmentioning

confidence: 99%

Epoxy Resin-Encapsulated Polymer Microparticles for Room-Temperature Cold Sprayable Coatings

Huang

Liu

Khalkhali

et al. 2021

ACS Appl. Mater. Interfaces

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We designed and synthesized epoxy-encapsulated microparticles with core−shell structures via suspension polymerization to enable high-efficiency, room-temperature cold spray processing. The soft core of the microparticles was comprised of a thermoset resin, diglycidyl ether of bisphenol A (DGEBA), which was optionally blended with the thermoplastic, poly(butyl acrylate); the protective shell was formed using polyurea. The composition, morphology, and thermal behavior of the microparticles were investigated. An inverse relationship between deposition efficiency and particle size was demonstrated by varying the surfactant concentration that was used during particle synthesis. We also determined that the microparticles that had pure resin as the core had the lowest viscosity, exhibited a decrease in the critical impact velocity required for adhesion, had the best flowability, and yielded a dramatic increase in deposition efficiency (56%). We have demonstrated that our in-house synthesized particles can form homogeneous, smooth, and fully coalesced coatings using room-temperature cold spray.

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“…Compared with crosslinking curing resins, thermoplastic resins have the characteristics of low energy consumption, solvent-free, and recyclable, and it is often used in the preparation of powder spraying coatings, such as polyolefine [11,12], polyamide [13,14], polyester [13,15], and polycarbonate [16,17]. However, these typical thermoplastic resins as mentioned previously have the characteristics of high hot melting temperature, poor flowability, high requirement for surface cleanliness of materials, complex spraying equipment, and more.…”

Section: Introductionmentioning

confidence: 99%

Study on a Novel Recyclable Anticorrosion Gel Coating Based on Ethyl Cellulose and Thermoplastic Polyurethane

et al. 2019

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In this paper, ethyl cellulose, thermoplastic polyurethane, and mineral oil were used as the main raw materials to synthesize a recyclable thermoplastic gel for anticorrosion coatings by a hot melt method. In addition, the effect of thermoplastic polyurethane on the properties of the coating was discussed. The structure and corrosion protection properties of the coating were characterized and analyzed by a scanning electron microscope, transmission electron microscope, X-ray diffraction, infrared spectroscopy, dynamic mechanical analysis, salt spray test, and electrochemical measurements. The results show that the ethyl cellulose and oil in the coating can form a stable organic-gel structure by hydrogen bonding, and the mineral oil and castor oil are uniformly dispersed in the coating. The surface of the coating does not change after 3000 h of a salt spray test. During the repeated hot melting spraying and immersion in 3.5 wt.% NaCl solution for five times, the electrochemical impedance modulus of the coating was always above 109 Ω⋅cm2, the water absorption rate was always less than 1.5 wt.%, and the mechanical properties of the coating did not decrease. This novel coating could be used for the corrosion protection of flange and valve connections in pipeline and bolting connections in different industries. The disassembly and assembly operation of these connection structures during the regular maintenance will destroy the ordinary anticorrosion coating, and the irregular geometric shape of such places also make difficulties for the preparation of ordinary coatings onsite.

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Dual layer structural thermoplastic polyester powder coating film and its weathering resistance

Cited by 6 publications

References 7 publications

Inkjet-patterned porous split-ring resonator and its performance study on metamaterial application

Inkjet-patterned porous split-ring resonator and its performance study on metamaterial application

Epoxy Resin-Encapsulated Polymer Microparticles for Room-Temperature Cold Sprayable Coatings

Study on a Novel Recyclable Anticorrosion Gel Coating Based on Ethyl Cellulose and Thermoplastic Polyurethane

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