Hydrophobic coating makes surfaces effectively repel water
Hydrophobic literally means afraid of water meaning that when a coating is hydrophobic, the coated surface fears water. In practice this means that the surface repels water by turning it into a shape of a column not letting it wet the surface. Besides protecting from water and other liquid spills, the hydrophobic coating makes its substrate easy to clean and generally improves durability. The properties of a hydrophobic coating are beneficial for domestic commercial and industrial applications from shoes to windshields to heavy duty machinery.
In this article we will take a closer look at the two types of water repellent nano coatings, outline several applications across sectors as well as providing you with an overview on hydrophobic coating manufacturers and prices in India.
The 2 types of hydrophobic coatings
There are two types of technologies that allow for hydrophobic properties. These include hydrophobic coating based on nanotechnology and fluoropolymer coatings which also repel water and dirt.
1. Nano hydrophobic coating
Applications: medical supplies, electronics, automotive protective coatings and textile industry – medical equipment, hydrophobic clothing and shoes as well as hydrophobic coating for cars (in India especially handy during the Monsoon season) protecting car paint and windshield for better visibility. These coatings are also used as a measure to fight graffiti vandalism or public urination.
A nano coating uses nano materials and particles to create a barrier that protects a substrate on the nanoscale. In the case of hydrophobic coating the active ingredient is silicon dioxide. The coating bonds chemically with the substrate, becoming part of it. The surface of a nano coating has very low surface energy, which makes it hydrophobic – the water cannot “wet” the surface and is unable to adhere to it. This makes them easy to clean and scratch resistant. Nano coatings are transparent, thin film layers which are often indistinguishable from the uncoated substrate. The consumer products are usually in a form of hydrophobic spray to make it easy to use on substrates from windshields to clothing.
The nanoparticle products can further be divided into two groups:
- Superhydrophobic coatings have a water contact angle bigger than 150 degrees. The sliding angle of superhydrophobic coatings is less than 10 degrees.
- Hydrophobic coatings have a water contact angle of 90 degrees or higher. This coating is more durable compared to the superhydrophobic coating.
2. Fluoropolymer hydrophobic coatings
Applications: industrial applications in the oil and gas, construction, automotive, food processing, and aerospace industries. Consumer applications include non-stick cookware and fabrics like Gore-Tex.
A fluoropolymer coating is a general term for a class of non-stick coatings (including Teflon, Xylan, Excalibur, and Fluon), which are so named because they contain fluorocarbons. The strong bond between fluorine and carbon gives the fluoropolymer coating its water (and oil) repellent qualities.
Fluoropolymers are also non-stick, abrasion resistant, low-friction, have excellent heat resistance and thermal stability, and are chemical resistant. They also come in a wide range of colours and can be applied at different film thicknesses depending on the application.
Hydrophobic coating India – manufacturers and prices
You can find a number of water repellent coating providers in India. Below we provide you with a list of hydrophobic and superhydrophobic coating manufacturers in India. If you need any assistance to find the right hydrophobic coating expert for your project, do not hesitate to contact us via the request a quote button below, or by sending us an email. Our experts are here to help!
|ANT Lab||Unique Park B-1, Near DGN, Navghar , Dist – Palghar, Mumbai City, India|
|Astra Chemtech Pvt. Ltd.||No. 306, Nav – Vivek Industrial Estate,. Mogul Lane, Mahim West, Mumbai – 400016, Maharashtra, India|
|Contech Chemicals||308/309, ONYX-2, Jalaram Mandir Road, Near Navchetan School, Paldi, Ahmedabad – 380007. Gujarat ,India.|
|Clean Coats Pvt. Ltd.||G Wing, Unit No.437, 4th floor, Kanakia Zillion, LBS Marg, Kurla (West), Mumbai – 400070, Maharashtra, India.|
|Leader Paint Marketing||Shop No. 1, Vinayak Apartment, 387, Narayan Peth Near Patrya Maruti Chowk, Modi Ganpati, Narayan Peth, Pune – 411030, Maharashtra, India|
|TECHExpert Engineering||116, Siddharth Towers, Maharshi Karve Rd, Paschimanagri, Kothrud, Pune, Maharashtra – 411038, India|
Indication of hydrophobic coating prices in India
The prices of the products vary according to the quality and the provider. Besides that, the substrate on which the coating needs to be suitable for can change the price as well. Below you can find the average hydrophobic coating prices for application on different substrates.
|Product||Average price (based on 20 litre packaging)|
|Hydrophobic coating for the interior & exterior of your home||₹ 5000|
|Waterproofing clothes & fabric – Hydrophobic coating for textile||₹ 11.500|
|Non Oleophobic – Hydrophobic coating for metals & ceramics||₹ 19.500|
|Oleophobic – Hydrophobic coating for metals & ceramics||₹ 41.500|
|Hydrophobic coating for stones||₹ 19,500|
we are looking for a hydrophobic coating for our product. do you have any super performing product which can be coated on the metal surface?
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Anne-Kathrin – Coatings.co.in