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What is a nano-coating?

Author: TWI
Abstract: 文章《什么是纳米涂层?》介绍了纳米涂层的定义、类型、应用、优势以及制备方法。纳米涂层,也称为陶瓷涂层,应用于表面以排斥干燥颗粒、水、油和污垢,并可提供多种有利特性,如耐刮擦、提高硬度和抗菌能力。主要类型包括防腐涂料、防水和不粘涂层、抗菌涂层、热障涂层、耐磨涂层、自修复涂层、增透膜和防涂鸦涂料。纳米涂层的优势包括易于清洁、耐用(可持续使用25年)、透气性好和电阻性强。其制备过程涉及高纯度材料的选择、溶剂中溶解、表面处理、涂布和固化步骤,以确保涂层的质量和稳定性。

What is Nano Coating?

Nanocoating, also known as ceramic coating, is the process of applying a surface layer to repel dry particles, water, oil and dirt. They can exist in both liquid and solid forms and provide advantageous properties. For example, nanocoatings can make surfaces scratch-resistant, increase hardness or make them resistant to bacteria.


Type and Application

Anti-corrosion coatings: When applied to metals, coatings prevent compounds from coming into contact with corrosive materials, thereby stopping processes such as oxidation.

Waterproof and non-stick clothing: Hydrophilic coatings can be applied to all kinds of clothing, while non-stick coatings are applied to furniture, appliances and glass.

Antimicrobial Coatings: These coatings help inhibit the growth of microorganisms and are especially useful in areas such as public transport.

Thermal Barrier Coatings: This type of coating is especially prevalent in the aerospace industry and is often applied to metal surfaces. The high temperatures at which aircraft operate open up possibilities for the coating to be used in high-powered vehicles.

Abrasion Resistant Coating: The main application of this coating is to extend the life cycle of the surface by reducing the amount of friction that occurs.

Self-Healing Coating: Filled nanocapsules within this coating help repair the surface should any scratches occur. They can be found in everyday objects, including mobile phones and car paint.

Anti-reflection coating: This coating does not increase transmission, but only reduces reflection on the incident side

Anti-Graffiti Paints: These are invisible to the naked eye and prevent governments and corporations from costly graffiti removal.


Advantage

  • easy to clean

  • Sustainable (25-year lifespan)

  • breathable

  • resistance

Preparation

The specific method of nano-coating preparation can vary depending on the type of coating material, but generally includes the following steps:

  1. Preparation of nanocoatings requires high-purity coating materials and solvents. These materials often require careful preparation and purification to ensure the quality and stability of the final coating.

  2. Dissolve the coating material in an appropriate solvent to form a homogeneous solution. Heat and agitation are often required to facilitate the dissolution and mixing process.

  3. Before coating, the surface to be coated needs to be treated necessary, such as cleaning, removing oxide layer, grinding or surface active treatment. This helps to ensure that the coating adheres firmly to the surface and that an even coating is formed.

  4. Spread the prepared solution on the surface to be coated. Coating can use different methods such as spraying, rolling, brushing or dipping etc. Common users in the northern and southern tides use wire Bar Coaters to prepare coatings.

  5. After the paint is applied, it needs to be dried and cured. This usually involves applying heat to the coating to evaporate residual solvents and facilitate curing of the coating. Different materials and coatings require different drying and curing conditions.


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