powder coating is a rapidly developing field in the entire coating technology. To realize the popularization and application of low-temperature powder coatings in automobile wheels, the premise is that the wheel products produced under the low-temperature powder process meet the current performance standards of automobile parts. Automobile wheels are the main load-bearing parts of automobiles, which not only require sufficient mechanical strength, but also sufficient toughness to ensure impact resistance.

However, the curing conditions of ordinary powder coatings are mostly around 180℃, and some are as high as 200℃, and the time is about 25min. First, the realization mechanism of low-temperature curing of low-temperature powders is analyzed; second, the baking of the two powders is tested Characteristics, the baking curve is drawn; third,hybrid epoxy polyester powder coating Factory  the mechanical performance test (yield strength and reliability test) and paint film test (adhesion, gravel impact, water resistance, salt spray test and balance weight sticking test) of the sprayed hub ; Afterwards, analyze and evaluate the application and promotion of low-temperature technology in the production of aluminum wheels.

Powder coatings have long been used on automobile wheels, and their environmentally friendly construction and excellent coating properties have promoted their rapid development in the auto parts industry in recent years. Reducing the curing temperature of the powder coating can increase the toughness of the wheel hub, reduce the production energy consumption of the enterprise, and achieve the purpose of energy saving and environmental protection.

Therefore, if the aluminum wheel industry can use low-temperature curing powder, there will be a lot of room for improvement in energy conservation and environmental protection.. There are shortcomings of high baking temperature and long time, which leads to high energy consumption in practical applications and too high The curing temperature can also cause parts to become brittle

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With the continuous improvement of 'green barriers' to imported products in developed countries such as the European Union, the United States, and Japan, and the intensive introduction of a series of environmental protection policies and regulations in China, the development of organic solvent-based coatings, including liquid paints, will be more and more affected. At present, the painting rate of liquid paint is only 30-50%.

The primary powder coating rate of powder coatings can reach more than 70%. Rapid development to ensure the realization of the 'Eleventh Five-Year' energy-saving and emission reduction targets of the coating industry and the medium and long-term technological development plan. After nearly 30 China indoor powder coating years of development, the production technology of powder coatings in my country has been very mature.

According to reports, the 'Medium and Long-term Development Plan for the Coating Industry Science and Technology' proposes that in the next 10 years, my country will significantly reduce the proportion of traditional solvent coatings in industrial coatings, so that its share will be sharply reduced from the current 50%*5%. But Liu Zexi also pointed out that the lag or lack of relevant standards is seriously restricting the development of my country's powder coating industry, and this problem must be resolved as soon as possible.

Because the disposal of these waste sludges is very difficult, and VOC is not only harmful to humans, but also has been proven to be one of the main greenhouse gases that cause global warming.Disclaimer: The purpose of posting this information on this website is to spread more information that has nothing to do with the position of this website.

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Temperature adjustment * curing temperature, and make the running time of the conveyor belt in the oven match the curing time, taking into account the drop in the temperature of the inlet and outlet of the oven and the difference between the actual working temperature and the oven instrument temperature, the director can be flexible 10-20 % Of the running time or increase 5-10℃2, start the air compressor, randomly check a part of the powder coating, insert the powder suction tube of the spray gun into the powder container, adjust the working voltage to 40,000-80,000 volts, and the air is too high.

Powder coating usage conditions: Static value: 40-80kv Film thickness: 60-70U (lower limit: 50U upper limit: 90U) Baking conditions: 180℃/20 minutes Spraying distance: 15-25CM Storage environment: temperature below 35℃, ventilated and dry Coating performance: impact resistance 1KG*30cmpass spraying Note: INTERPON SPECIAL POWDER When adding the recycled powder ratio after spraying, pay attention to the uniformity of the color after adding the recycled powder, and the powder floating in the powder tank needs to be recycled evenly Powder addition ratio: within 30% (*better completely use new powder).

The use of thermoplastic powder coating: 1.5KG/cm. Thermosetting powder coatings are composed of bonding powder coating thermosetting resins, curing agents, pigments, fillers and additives. Thermosetting powder coatings include epoxy resin, polyester, and acrylic resin. Thermoplastic powder coatings include: polyethylene, polypropylene, polyester, polyvinyl chloride, chlorinated polyether, polyamide, cellulose, and polyester.

The powder output is better with a good degree of atomization.Thermoplastic powder coatings are composed of thermoplastic resins, pigments, fillers, plasticizers and stabilizers. Spray one or several pieces of work and put them in the oven to bake according to the curing conditions. There are many types of thermoplastic powder coatings, but specifically they can be divided into two categories. 

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Only after spraying and curing can it become the final product. , And quickly corroded the substrate. If the heating temperature is low and the time is too long, the powder coating will melt, level and wet the coated object. We can see that the traffic barriers used outdoors will show signs of rust at the arc coers of the intersection soon after being put into use. In short, if you want to heat up quickly and reach the curing temperature in a short time, you can get the China bonding powder coating Manufacturers ideal coating effect and long-term protection function.

Due to the rapid curing, the inteal stress of the film layer will be more, but because the coating film is thinner, the physical properties have little influence. The leveling process has been completed before gelatinization, and this kind of board has good leveling and less orange peel.

If the curing temperature or time If it is not enough, the curing will be incomplete, the due performance will not be exerted, its physical properties will be greatly reduced, the chemical resistance will not be good, and the decoration, corrosion resistance, and weather resistance will not reach the expected results.

Some people think that the heating temperature is lower, the reaction speed is reduced, and the leveling can be better. Each powder coating has its own curing characteristic curve, which can be fully cured within a certain temperature and time range. That is to say, the use of powder coatings is as important as the production of powder coatings. As the reaction proceeds, the viscosity continues to rise, and the leveling effect will not be good.The powder coating itself is only a semi-finished product.

At the same time, the coating can wet the surface well, improve its adhesion, and has better durability. The curing effect has occurred before, and the physical properties are not ideal. In fact, it is just the opposite, because after powder spraying, its melting and solidification are carried out almost at the same time. Direct relationship

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The appearance generates a stable maintenance layer, but when using silicone resin alone, the intermolecular force is relatively small, the adhesion is poor, and the price is relatively high. Silicone resin is an indispensable base material for high temperature resistant powder coatings.

Due to their higher bond energy, silicone resins have higher oxidation stability and can be used in coatings. High temperature resistant special resin and high temperature resistant pigments and fillers form high temperature resistant plastic powder, which is commonly used for spray coating on the surface of ovens, guardrails, automobile brake pads and exhaust pipes.

Because of their high temperature resistance, they are widely used in chemical, petroleum, metallurgical, aviation and other industries. In high temperature resistant powder coatings, silicone bonding powder coatings Factory resins are indispensable. At present, silicone resins used in high temperature resistant powder coatings are mainly divided into the following two types: Methyl polysiloxane, its characteristics are: good hardness; good water repellency; low appearance and non-stick effect;-good yellowing resistance at high temperature; but poor miscibility with other organic resins.

At present, heat-resistant powder coatings are still dominated by organic silicon powder coatings. Silicone resin can be used as a base material alone or combined with polyester and epoxy resin to improve the high temperature resistance of the coating film. At the same time, high-temperature resistant inorganic pigments and fillers and appropriate additives should also be selected in the formulation.. We know that silicone resins are mainly based on silicon-oxygen bonds

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