Influence of surface structure on friction and wear characteristics of silicone rubber for hydraulic rod seals

Lee, Sung-Jun; Kim, Chang-Lae

doi:10.1039/d3ra06485a

Cited by 6 publications

(1 citation statement)

References 39 publications

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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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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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Properties and Mechanism of Friction‐Reducing Silicone Rubber Modified with Hyperbranched Polysiloxane

Ai,

Wang

2024

Macro Chemistry & Physics

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During the utilization of silicone rubber, excessive friction can cause damage to the contact surface and the material itself. Therefore, friction‐reducing modification of silicone rubber has attracted much attention. In this paper, hyperbranched polysiloxanes with different structures is synthesized for friction‐reducing modification of silicone rubber. Infrared spectroscopy, nuclear magnetic resonance spectroscopy and amine titration tests reveal that hyperbranched polysiloxanes are successfully synthesized by the hydrolytic condensation of 3‐aminopropyltriethoxysilane and their Michael addition with four acrylates with different alkyl chains. The friction coefficients and mechanical properties of silicone rubber are evaluated. Hyperbranched polysiloxanes significantly reduces friction and maintained excellent mechanical properties of silicone rubber. Silicone rubber with butyl‐ester‐secondary‐amino hyperbranched polysiloxane displays the best overall performance, with static and dynamic friction coefficients decreasing by 33.99% and 43.16% compared with that of pure silicone rubber, respectively, and a tensile strength of 10.80 MPa. The friction‐reducing mechanism of hyperbranched polysiloxanes on silicone rubber is investigated by contact angle test and dynamic mechanical analysis. Hyperbranched polysiloxanes migrates to the surface due to the incompatibility of alkyl chains with silicone rubber matrix. Consequently, the shielding effect produced by hyperbranched polysiloxanes on the surface depresses the adsorption activity of silicone rubber surface thereby reducing friction.This article is protected by copyright. All rights reserved

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Strengthening mechanisms of laser cladding TiC/FeCoCrNiCu high-entropy composite coatings: Microstructure evolution and wear behaviors

Chen,

Liu,

Yang

et al. 2024

Tribology International

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Influence of surface structure on friction and wear characteristics of silicone rubber for hydraulic rod seals

Abstract: This research investigates the impact of surface structure on the friction and wear characteristics of silicone rubber used as a material for hydraulic rod seals.

Cited by 6 publications

References 39 publications

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

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

Properties and Mechanism of Friction‐Reducing Silicone Rubber Modified with Hyperbranched Polysiloxane

Strengthening mechanisms of laser cladding TiC/FeCoCrNiCu high-entropy composite coatings: Microstructure evolution and wear behaviors

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