Superhydrophobic

SuperHydrophobic means Super Water Repellent. A superhydrophobic surface sheds water like drops on a lotus leaf.

SuperHydrophobic Coating:

Super-hydrophobic surfaces (SH) are well-known in the surrounding nature which has optimized these properties over thousands of years. The extreme water repellent properties of super-hydrophobic surfaces are found in plants (e.g. lotus leaf) and animals (e.g. water striders, or pygmy gecko.

 

 

 

 

 

 

 

Fig. 1 Water droplet on the surface of superhydrophobic leaf

 

In the last years, many attempts have been made to mimic these properties found in nature. The lotus leaf effect has been studied carefully, and attention has been paid to reproduce the roughness structure of this plant. However, the development of a super-hydrophobic surface is a complex process involving physical and chemical aspects. A super-hydrophobic surface can be defined as a surface presenting a water contact angle exceeding 150°. In this case usually, a water droplet can bounce on the surface and roll-off at a tilt angle of only 10°.

 

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Super-hydrophobic surfaces can only be achieved by a combination of hydrophobicity (low surface energy materials) in combination with appropriate surface textures. Super-hydrophobicity is usually explained by the Cassie-Baxter model according to which air is trapped in the microgrooves of the rough surface and water droplets rest on the “composite” surface comprising air and the tops of micro-protrusions. SH surfaces may act on the prevention of moisture build-up (reduction of corrosion rate), the prevention of ice formation, avoidance of bio-fouling, the development of breathable super-hydrophobic fabrics, self-cleaning properties, anti-microbial activities, reduction of the energy required to pump fluids in porous networks (ability to slide without resistance), etc. Hence, these surface properties will find numerous applications in the field of microelectronic devices, micro-electromechanical systems (MEMS) and devices, optics, medical devices, textiles, antiquities, photovoltaic cells, self-cleaning surfaces, just to mention a few highly relevant industrial-scale applications.

 

 

 

 

 

 

 

 

Fig. 2 Water droplets on superhydrophobic textile

 

 

 

 

 

 

 

 

 

 

Fig.3 Coffee and red wine droplets on superhydrophobic textile

 

 

 

 

 

 

 

 

 

 

Fig.4 Water droplets on superhydrophobic glass

 

 

 

 

 

 

 

 

Fig. 5 Superhydrophobic coating in action

Comments(4)

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Nuttapong Charoenchainont

February 26, 2013 at 9:55 pm

Dear Sir/Madam

My name is Nuttapong Charoenchainont. I am working for Blucher Co. Ltd. We are applicator and distributor in construction chemicals and flooring industry in Thailand. Our products include non-shrink grout, epoxy grout, polyurethane, silicone, plastic sheet, water stops, epoxy flooring, sport flooring, etc.
Since the market in South East Asia is expanding, the needs of construction related materials are higher. Your product is very interesting for construction industry.
We have been in construction industry for almost 20 years. We also have good networks in this industry from manufacturers to end-users.
I would like to apply for distributor of your product in this region.
Please kindly consider our co-operation.
Thank you for your response.

Sincerely,
Nuttapong Charoenchainont / Blucher
Sales Manager
Email: natt.charoen@gmail.com
Mobile: +66896674922
Tel: +6629337403
Fax: +6625385114


Daniel States

November 24, 2013 at 5:59 pm

Kommenter: hello I am the owner of a waterproofing company in Colorado USA and was curious about your product. I have used ultra ever dry which is another super hydrophobic application but looking to find a more superior product. If there is a way we can further get more information about becoming a applicator for your product or a distributor please let me know. Contact me through http://www.drilfe.com or http://www.dstates@cccgws.com. Please feel free to call me at (970) 301-6363 thank you and looking forward to hearing from you


Eric Deskins

February 10, 2014 at 10:36 am

Kommenter: Customer driven requests for a coating that is extremely hydrophobic. We are a commercial printer specializing in IML. Printing with UV inks on polypropylene {BOPP}.
Looking for a product that can be applied with an anilox roll and cured with UV lamps.
Thank you


jeya prakash.d

February 28, 2014 at 8:33 pm

Kommenter: dear sir,
I want to fabricate super hydrophobic aluminum
substrate… What are the methods u provide for this coating