Superhydrophobic coating of silica with photoluminescence properties synthesized from rice husk ash

Junaidi, Mohd Usman Mohd; Azaman, S. A. Haji; Ahmad, Norhaiza; Leo, C.P.; Lim, Guat Wei; Chan, Derek Juinn Chieh; Yee, Hooi Min

doi:10.1016/j.porgcoat.2017.05.009

Cited by 38 publications

(15 citation statements)

References 39 publications

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“…For example, by adding nano-SiO2 into the coating formulation, the mechanical, thermal, [2,17] weathering resistance [18,19], and anticorrosion properties [20,21] of the organic coatings were significantly improved. Nano-SiO2 is also used for both super hydrophobic coatings [22][23][24][25][26] or hydrophilic coatings [27].…”

Section: Methodsmentioning

confidence: 99%

The Synergistic Effects of Sio2 Nanoparticles and Organic Photostabilizers for Enhanced Weathering Resistance of Acrylic Polyurethane Coating

Nguyen

2020

J. Compos. Sci.

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This study aims to evaluate the synergical effects of SiO2 nanoparticles (nano-SiO2) and organic photostabilizers (Tinuvin 384 (T384) and Tinuvin 292 (T292)) on the weathering resistance of acrylic polyurethane coating. Data obtained from infrared (IR), field emission scanning electron microscopy (FESEM), and weight loss of coatings (before and after aging test), suggest that the SiO2 nanoparticles play a dual role, as both reinforcer and UV absorber, thus improving effectively both the mechanical properties and the weathering resistance of polyurethane acrylic coatings. The nanocomposite coating containing 2 wt % nano-SiO2, 2 wt % T384, and 1 wt % T292 exhibits excellent weathering and abrasion resistances, offering a durable outdoor application.

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Section: Methodsmentioning

confidence: 99%

The Synergistic Effects of Sio2 Nanoparticles and Organic Photostabilizers for Enhanced Weathering Resistance of Acrylic Polyurethane Coating

Nguyen

2020

J. Compos. Sci.

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“…The peaks at 1380, 1392, and 1444 cm −1 were caused by the asymmetric deformation of the –CF 3 and the –CF 2 groups [ 26 ]. The peaks at 2890, 2930, and 2976 cm −1 were due to the symmetric and antisymmetric stretching vibrations of –CH [ 27 ]. All these peak changes indicated that HFDS was grafted successfully onto the surface of the UFA particles.…”

Section: Resultsmentioning

confidence: 99%

Preparation of Ultrafine Fly Ash-Based Superhydrophobic Composite Coating and Its Application to Foam Concrete

Song

Tang

et al. 2020

Polymers

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The waterproof and thermal insulation property of foamed concrete is very important. In this study, the ultrafine fly ash (UFA)-based superhydrophobic composite coating was applied onto foam concrete. The UFA-based base coating that closely adhered to the concrete initially improved the waterproofness of the test block, and the silane coupling agent-modified UFA-based surface coating further achieved superhydrophobicity. The UFA on the coating surface and the asperities on the surface jointly formed a lotus leaf-like rough micro–nanostructure. The 154.34° water drop contact angle and 2.41° sliding angle on No. 5 coating were reached, indicating that it was a superhydrophobic surface. The water absorption ratios of the composite coating block were 1.87% and 16.6% at 4 h and 7 days, which were reduced by 97% and 75% in comparison with the original foam concrete. The compressive strength and heat conductivity coefficient after soaking for 4 h of the composite coating block were higher than 4.0 MPa and 0.225 W·m−1·K−1, respectively. The UFA-based superhydrophobic composite coating proposed in this study and applied onto foam concrete is simple and cheap, requires no precise instrument, and can be applied in a large area.

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“…The coating with mass ratio of less than 0.3 revealed a contact angle value of 128.3 °, which was a consequence of being devoid of nanoscale irregular structures and the presence of hairlike protuberances. Junaidi et al (2017) prepared a silica-oriented superhydrophobic coating with photoluminescence features which was synthesized from rice husk ash. The rice husk ash at 550 and 650 °C was calcined to produce particles of silica with a minor quantity of residual carbon.…”

Section: Progress In the Fabrication Of Numerous Fluorine Free Coatings Of A Superhydrophobic Naturementioning

confidence: 99%

Fluorine-free superhydrophobic characterized coatings: A mini review

Sarkar¹,

Kandasubramanian

2021

Marit. Technol. Res.

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The scientific fraternity and coating companies have researched and developed coatings with superhydrophobic features for a wide range of applications, varying from automotive, oceanic, pharmaceutical, and thermal and power sectors, over the preceding few years. The self-cleaning features of superhydrophobic surfaces exhibit pronounced dust repelling and lower dust adhesiveness qualities, along with incomparable water repellence for maritime, automotive, and pharmaceutical applications. The advancement of super-hydrophobic surfaces for averting the accrual of impurities on surfaces is an active space of exploration globally. A lesser hysteresis of contact angle leads to drops of water sliding effortlessly on such surfaces. The solid surfaces’ surface energy can be weakened by fixing materials of lesser surface energy on the exterior, which can be performed by the following dual methods; either by fixing materials of reduced surface energy straight onto the exterior of a substrate in the form of a coating of that material, or by fixing materials of less surface energy on the exterior of nano-architectural structures and then dropping the coating of those nanoscale materials on the exterior of the substrate. The generation of nanoscale irregularities on substrates by dropping nanostructure layers on surfaces makes it an attractive option since, usually, nanomaterials have a minimum of one dimension, ranging from 1 - 100 nm. The nanostructures’ sizes unveil exceptional physical and chemical characteristics, principally owing to their greater specific surface area to volume quotient. This review encompasses the non-fluorinated superhydrophobic coatings developed to date.

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Superhydrophobic coating of silica with photoluminescence properties synthesized from rice husk ash

Cited by 38 publications

References 39 publications

The Synergistic Effects of Sio2 Nanoparticles and Organic Photostabilizers for Enhanced Weathering Resistance of Acrylic Polyurethane Coating

The Synergistic Effects of Sio2 Nanoparticles and Organic Photostabilizers for Enhanced Weathering Resistance of Acrylic Polyurethane Coating

Preparation of Ultrafine Fly Ash-Based Superhydrophobic Composite Coating and Its Application to Foam Concrete

Fluorine-free superhydrophobic characterized coatings: A mini review

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