Powder coating empowers the safe, efficient and green development of the new energy industry

preface

Powder coating is a solid powder synthetic resin coating composed of solid resin, pigments, fillers and additives. Unlike ordinary solvent-based paints and water-based paints, its dispersion medium is not solvent and water, but air. It has the characteristics of no solvent pollution, 100% film formation, and low energy consumption. There are two main categories of powder coatings: thermoplastic and thermoset.

Powder coating is a completely different form from general coating, and it exists in the state of fine powder. Since no solvents are used, it is called powder coating. The main characteristics of powder coating are: harmless, high efficiency, resource saving and environmental protection.

Application of powder coating in the new energy industry

01 The trend of "paint to powder" and "water to powder".

In recent years, powder coating and coating, as a hot category of green industrial coating, has been widely used in all walks of life, especially in the application scenarios of new energy batteries, energy storage, photovoltaic fields, etc., with excellent insulation performance, ultra-high weather resistance and high temperature resistance is rapidly expanding the market in related fields. Powder coating, with its significant advantages of being able to come out of the box and suitable for automated coating, is even more outstanding in many green coating categories. Powder coating is the most cost-effective option based on the quality of the coating film, the wide range of requirements for on-site construction conditions, and the comprehensive coverage of the coating function.

02 New energy vehicles and three-electric systems

At present, the mainstream packaging material PET blue film of battery cells cannot meet the requirements of the new generation of power battery structure, which brings great opportunities for the development of insulating powder, UV insulating coating, and UV insulating inkjet. At present, the internal insulation coating of the power battery liquid cold plate is mainly based on powder coating, and the current emerging technologies mainly include: electrophoresis, powder, PVC anti-stone chip coating baking, electrophoresis, powder baking, electrophoresis, polyurea baking 1, the latter two types of technologies are the latest direction, and have been applied in many new energy vehicles and battery companies. In the future, in the field of new energy, the market demand for powder coatings is still very broad. Insulating powder coatings and low-temperature powder coatings are supplied to a number of new energy vehicle companies, and are widely used in the protection of battery trays, liquid cold plates and other parts, and in new energy vehicles, automotive metal parts and plastic parts, commercial bodies and frames, it can solve the problem of edge coating falling off in the coating process of these special-shaped parts, and the performance indicators include impact resistance, breakdown resistance, insulation, water resistance, corrosion resistance and other excellent performance.

03 Energy storage applications

As the underlying supporting technology of the energy storage industry chain, powder materials have made continuous breakthroughs in key fields such as cathode and anode materials, solid-state electrolytes, and hydrogen fuel cell catalysts through microstructure design, surface modification, and large-scale preparation process innovation, and have become the core elements to promote the iteration of new energy technologies.

There are differences in the impact of corrosion factors in diverse energy storage application scenarios, which also puts forward requirements for the corrosion prevention of outer coatings. Relevant researchers in the industry pointed out that if the base material of energy storage is hot-rolled steel plate, its anti-corrosion mainly depends on the subsequent coating process. It can be strengthened by electrophoretic powder spraying process, or selected as a pure/high fluorinated resin system powder coating. Not only the coating, but also the coating process also affects the anti-corrosion effect. Compared with the paint process, the powder process has the characteristics of "low input, low pollution, low consumption, low cost and high efficiency". For energy storage battery modules, busbars, shells and other components, the company has developed corresponding insulating powder materials. With the application of powder coating process, the intellectualization of coating equipment continues to advance.

With the support of policies, new energy coating is more inclined to "4E" environmentally friendly green coatings

With the continuous support of the state for environmental protection policies, the powder coating technology in the supporting industry of new energy vehicles is developing rapidly. In the field of coating, powder coatings are widely recognized by the market as "4E" environmentally friendly green coatings because of their characteristics of no pollution, zero VOCs emissions, high recycling rate, simple coating process and high automation. This coating not only reduces VOC emissions, but also reduces the carbon footprint of the product lifecycle. Type 4E Green Paint provides green coating protection for automotive batteries, wheels, frames, under-the-hood parts (such as radiators and shock absorbers), car bodies and various parts (joysticks, reflectors, wipers, etc.). Therefore, the development of powder coating technology can not only promote the development of the new energy vehicle industry, but also an important way to achieve environmental protection and sustainable development. Compared to liquid coatings, powder coatings offer advantages in many areas due to their superior protective properties, sustainable quality and higher transfer efficiency, especially in terms of toughness and scratch resistance. With the rapid development of the automotive track, powder coatings are also constantly pursuing performance improvement and optimization, and are committed to improving the performance of weather resistance, low temperature, film and decoration. The good flexibility, impact resistance, scratch resistance, waterproof and flame retardant properties of powder coating can effectively avoid fire hazards caused by aging of new energy vehicle parts, external collisions, extreme weather and long-term high loads, and ensure the safety of life and property of drivers and passengers. At the same time, the concept of energy saving, emission reduction, intelligence and lightweight in the automotive industry is deeply rooted in the hearts of the people, and powder coatings in the automotive field are bursting out with huge potential. The transportation industry, which accounts for about 1/3 of the total carbon emissions, has begun to implement the development strategy of new energy vehicles. Compared with traditional coatings, one-time spraying molding, the coating is lighter and thinner, saving the amount of paint and the spray coating can be recycled, with a recovery rate of 99%, improving spraying efficiency, reducing production costs, and providing environmental protection coating solutions that reduce costs and increase efficiency for the new energy vehicle industry.