Effects of the etching process on the surface, friction and wear characteristics of silicone rubber coated with micro-sized ceramic particles

Lee, Sung-Jun; Kim, Chang-Lae

doi:10.1039/d3sm01459b

Cited by 5 publications

(2 citation statements)

References 32 publications

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“…The water contact angle of the bare PDMS sponge was measured to be 115°. The droplet contact angles of the CNT-coated PDMS sponge electrode are 121°-126°, which are larger than the contact angles of PDMS in bulk form reported in previous studies [23,24]. These results imply that the method of fabrication of CNT-coated PDMS sponge electrodes with porous structure, namely, the angular sugar template process and CNT coating method, can improve the hydrophobicity of the surface.…”

Section: Resultscontrasting

confidence: 52%

Highly compressible wearable sensor with CNT-coated PDMS sponge electrodes for tactile monitoring application

Lee,

Ung,

Kim

2024

Phys. Scr.

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Electrical resistance-based sensors have attracted great attention due to their wide range of applications, among which sensors for detecting external forces are indispensable due to the complex environment of the modern era. Inspired by the capillary phenomenon, in this study, we fabricated a carbon nanotube (CNT)-polydimethylsiloxane (PDMS)-based compressive resistive sensor that is easy to fabricate and has a wide range of sensitivities. Repeated compression tests were performed to evaluate the durability of the fabricated sensors. Different coating conditions resulted in different durability depending on the extent to which the CNT electrodes were coated on the porous PDMS surface, and the sensitivity of the sensors could be controlled by CNT concentration, coating time, and coating depth. Resistive sensors with different sensitivities can easily detect changes in electrical signals due to finger pressure, which shows great promise for use in wearable electronics. In addition, the resistive sensor is biocompatible because only the pure PDMS surface is attached to the human body, and the porous structure exhibits good compressibility.

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Section: Resultscontrasting

confidence: 52%

Highly compressible wearable sensor with CNT-coated PDMS sponge electrodes for tactile monitoring application

Lee,

Ung,

Kim

2024

Phys. Scr.

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“…In the case of the acetone lubricant, the contact area decreased owing to the rough surface morphologies, such as numerous protrusions. It was presumed that the morphology of the protrusions deformed in response to the contact pressure or frictional stress and absorbed and distributed the stress generated between the two contact surfaces [51][52][53][54]. In particular, the surface polished by DI water showed the lowest wear rate, which was more than 10 times less than that under the dry polishing condition, and hydrolysis hardly occurred.…”

Section: Friction and Wear Behavior Of Polished Specimens According T...mentioning

confidence: 99%

Effects of liquid lubricants on the surface characteristics of 3D-printed polylactic acid

Kim,

Lee,

Kim

2024

Smart Mater. Struct.

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In this study, 3D-printed Polylactic acid (PLA) specimens were manufactured and polished using various lubricants to assess their surface, friction, and wear characteristics. After polishing, the surface roughness decreased by approximately 80% compared with that before polishing, except when acetone was used as the lubricant. In particular, under deionized (DI) water and acetone lubrication conditions, the friction coefficient decreased by 63% and 70%, respectively, whereas the specific wear rate decreased by 88% and 83%, respectively, compared with the unpolished specimens. In the case of dry polishing, adhesion, friction, and wear increase owing to surface damage. Ethanol and IPA polishing resulted in hydrolysis and increased friction, but slightly decreased wear rates. The surface of the specimen polished with acetone dissolved and became very rough. Only the surface polished with DI water exhibited hydrophobic properties. When acetone and DI water were used as lubricants, the surface adhesion force, adhesion energy, friction coefficient, and wear rate were lowest. The finite element analysis results showed that the polished surface exhibited stable contact pressure and friction force, while the unpolished surface showed large fluctuations in contact pressure and friction force owing to the laminated pattern. These results suggest that the polishing process is crucial for improving the surface characteristics and mechanical performance of 3D-printed PLA parts.

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Synergistic effects of hierarchical micro/nanostructures and PDMS/lubricant composites for superior tribological and wetting performance on aluminum

Lee,

Segu,

Kim

2024

RSC Adv.

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Effects of the etching process on the surface, friction and wear characteristics of silicone rubber coated with micro-sized ceramic particles

Abstract: This study investigates the friction and wear characteristics of silicone rubber used in hydraulic systems, focusing on surface properties achieved through coating strategies.

Cited by 5 publications

References 32 publications

Highly compressible wearable sensor with CNT-coated PDMS sponge electrodes for tactile monitoring application

Highly compressible wearable sensor with CNT-coated PDMS sponge electrodes for tactile monitoring application

Effects of liquid lubricants on the surface characteristics of 3D-printed polylactic acid

Synergistic effects of hierarchical micro/nanostructures and PDMS/lubricant composites for superior tribological and wetting performance on aluminum

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