Superhydrophobic sol–gel nanocomposite coatings with enhanced hardness

Lakshmi, R.V.; Bharathidasan, T.; Basu, Bharathibai J.

doi:10.1016/j.apsusc.2011.06.122

Cited by 132 publications

(55 citation statements)

References 30 publications

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“…Another interesting work related to an important increase in the hardness of the silica coatings as a function of the thermal treatment of the curing step is presented by Cairns et al [52]. Another novel work for the preparation of sol-gel coatings with both superhydrophobicity and enhanced hardness is presented by Lakshmi et al [53]. This work shows a simple method to fabricate hard superhydrophobic sol-gel nanocomposite coatings using hydrophilic silica nanoparticles.…”

Section: Superhydrophobic Surfacesmentioning

confidence: 99%

Design of Nanostructured Functional Coatings by Using Wet-Chemistry Methods

et al. 2018

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This review reports the implementation of novel nanostructured functional coatings by using different surface engineering techniques based on wet chemistry. In the first section, the theoretical fundaments of three techniques such as sol-gel process, layer-by-layer (LbL) assembly and electrospinning will be briefly described. In the second section, selected applications in different potential fields will be presented gathering relevant properties such as superhydrophobicity, biocide behavior or applications in the field of optical fiber sensors.

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Section: Superhydrophobic Surfacesmentioning

confidence: 99%

Design of Nanostructured Functional Coatings by Using Wet-Chemistry Methods

et al. 2018

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“…The active component is nanocristalline silicon dioxide, and its application gives a strongly hydrophobic characteristic to the treated surface (Lakshmi, 2011). This means that the material surface is unlikely to be wet even in case of driving rain or direct water pouring, similarly to what happens in the case of more traditional siloxane based hydrophobic treatments.…”

Section: Deposition Of Titanium Dioxide Sol-gel Products For Surface mentioning

confidence: 99%

Photocatalytic self-cleaning coatings for building facade maintenance. Performance analysis through a case-study application

Andaloro

Mazzucchelli

Lucchini

et al. 2017

FDE

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Abstract.Facade maintenance has become a key aspect in building management, due the specific actions involved and operation related costs. Within this framework, the application of titanium dioxide photocatalytic sol-gel products on facade elements offers a wide range of opportunities to ensure proper functionality maintenance over time. This paper illustrates the self-cleaning performance of titanium dioxide and silicon dioxide based coatings applied to different kinds of cladding materials. All tested samples were opaque. Preliminary laboratory tests were performed by means of water contact angle measurements to verify hydrophobic and hydrophilic behaviour prior to outdoor application. Afterwards, outdoor tests were performed to monitor colour variation over a 36-month period to verify product effectiveness and durability. Results proved that the application of functionalized nanotechnological coating to a facade can significantly facilitate cleaning operations and reduce the necessary frequency over time. In addition, the output provides some preliminary information about the exposure condition influence on self-cleaning performance, which could be further investigated in the future.

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“…Thin nanoparticulate coatings are commonly used in many fields of applications to improve surfaces in terms of their properties, e.g., hydrophobicity [1], self-cleaning, or mechanical characteristics [2]. Since process and formulation parameters have a strong influence on product properties, intensive research on the underlying interrelations has been conducted previously in our group [3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Enhancement of the Mechanical Properties of Nanoparticulate Thin Coatings via Surface Modification and Cross‐Linking Additive

et al. 2017

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The application of modified Al 2 O 3 nanoparticles for thin coatings is investigated to improve especially the mechanical characteristics by cross-linking the particles using an additive, together with the formulation parameters as well as the crosslinking kinetics. In general, the experiments demonstrate that the mechanical properties, like hardness and scratch resistance, can be enhanced via particle surface modification in combination with a cross-linking additive. Specifically, the optimal additive concentration was determined in order to obtain coatings with improved mechanical and constant optical properties. These results were related to the structure formation and cross-linking behavior. Mechanisms were identified for this series of experiments to explain how the particles bond with each other and how the coating structure is formed by using different additive ratios.

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Superhydrophobic sol–gel nanocomposite coatings with enhanced hardness

Cited by 132 publications

References 30 publications

Design of Nanostructured Functional Coatings by Using Wet-Chemistry Methods

Design of Nanostructured Functional Coatings by Using Wet-Chemistry Methods

Photocatalytic self-cleaning coatings for building facade maintenance. Performance analysis through a case-study application

Enhancement of the Mechanical Properties of Nanoparticulate Thin Coatings via Surface Modification and Cross‐Linking Additive

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