Many people think that the temperature of the primer baking (dry) of Teflon paint is not important, just bake it, in fact, this is a misunderstanding. If you usually encounter the following situations, please carefully bake the primer. For the primer coating of Teflon paint, we recommend a temperature of 150 ° C, after the workpiece reaches 150 ° C, bake for 5-10 minutes. I. If the temperature of Teflon primer is too low, such as baking below 100 ° C, the following situations may occur: 1. If the baking time is long enough, the moisture and cosolvent in the primer are basically volatilized, and then spray the top paint, this kind of situation generally will not cause too much problem. 2. If the baking temperature is not high enough and the time is not long enough, the moisture and co-solvent in the primer are not completely volatilized, and the various components in the top paint will penetrate into the primer, and the luster of the finished coating will be dull and yellow in the final baking, which we also call the bottom biting phenomenon. II.2Primer is too high temperature, such as baking 200℃ for a long time In this case, it can be understood that a part of the primer has been cross-linked and cured, and the top paint can not be fully penetrated into the primer, so the top paint can not be fully integrated with the primer, resulting in the poor bonding force between the top paint and the primer, which is often the customer in the process of use, the adhesion between the top paint and the primer is poor, the top paint falls off, and the primer does not fall off, as shown in the figure. Therefore, we recommend that the temperature of baking primer should not exceed 180 degrees. The following is the recommended construction process: A: Material handling First, the material (aluminum or stainless steel) with (360℃×30 minutes ~380℃×10 minutes) air burning or solvent cleaning for the first step of degreasing, the second step is the surface roughness, corundum sand 80#~120#, pressure 0.4~0.6mpa, sandblasting, roughness is (2.0~3.5)μm B, Teflon paint primer spraying Before using the bottom oil, it must be fully rolled evenly or slowly stirred with stirring blades (do not use shear blades to stir at high speed, otherwise it will destroy the structure of the paint, make the paint gelatinized and deteriorated), and the treated material (must be clean, dry, without any grease and pollution, it is strictly prohibited to touch the sand surface with your hand, otherwise it will seriously affect the adhesion, and even lead to peeling) should be laid flat. (1.0 ~ 1.5) mm Ф gun pressure transferred to the distance (0.2 ~ 0.3 mpa (20 ~ 30 cm, concentrate spray directly, use (140 ~ 160 ℃) x (5 ~ 8) minutes, table dry film thickness for 10 ~ 20 microns C, Teflon coating coating spraying The same oil must also be fully rolled or slowly stirred with stirring blades before use. The work piece that has been coated with the base oil can be cooled to bel...

Thermal spray Teflon can not only reduce product costs and improve production efficiency, but also can be used to directly solve problems on the product to improve product quality and increase sales. After being sprayed with Teflon, it has the following characteristics: 1.Slippability: PTFE spray film has a low coefficient of friction. When the load slides, the friction coefficient changes, but the value is only between 0.05 and 0.15. 2.Moisture resistance: The surface of the Teflon coating film is not stained with water and oil, and it is not easy to stick to the solution during production operation. If there is a small amount of dirt, it can be removed by simply wiping. Short downtime saves time and improves work efficiency. 3.Non-adhesive: Almost all substances do not bond with Teflon spray coating. Very thin films also show good non-adhesion properties. 4. Heat resistance: Teflon spray film has excellent heat and low temperature resistance. It can withstand high temperature to 300 ° C for a short time, generally can be used continuously between 240 ° C and 260 ° C, and has significant thermal stability, it can work at freezing temperatures without embrittlement, and does not melt at high temperatures. 5. Wear resistance: under high load, has excellent wear resistance. Under a certain load, it has the dual advantages of wear resistance and non-adhesion. 6.Corrosion resistance: Teflon spray is almost resistant to drug attack and can protect parts from any kind of chemical corrosion. Anhui Sinograce Chemical production types of Teflon coating, a variety of colors, cost-effective, according to customer needs to provide a variety of types of Teflon material spraying, a variety of colors, high sexual price of domestic PTFE Polytetrafluoroethylene, welcome new and old customers to call consulting business.

Teflon coating is one of the commonly used protective coatings in metal thermal spraying processing technology services, with good non-stick, wear resistance, corrosion resistance, high temperature resistance and other characteristics, can be applied to carbon steel, stainless steel, aluminum, copper, magnesium and various alloys and other metal materials. It can also be applied to non-metallic materials such as glass, glass fiber and some rubber plastics. The characteristics of Teflon coating are as follows: 1.Non-stick: Teflon spray almost does not produce adhesion with any substance, only a thin layer on the surface of the appliance, in order to show its non-stick ability. So in food processing, Teflon is sprayed on baking utensils, baking pans, and molds. When sprayed with Teflon, these utensils are easily demoulded, so the processed pastry food is in the same shape. At the same time, the service life of these instruments sprayed with teflon can be extended. 2.Slippery: Teflon coating has a low friction coefficient. When sliding, the friction coefficient changes, but the value is only between 0.05 and 0.15. 3.Moisture resistance: polytetrafluoroethylene coating surface does not stick to water and oil, the production operation is not easy to stick to the solution. If there is a small amount of dirt, just wipe it off. Short downtime, save time, improve work efficiency. 4. Wear resistance: excellent wear resistance under high load. Under a certain load, it has the dual advantages of wear resistance and non-adhesion. 5.Corrosion resistance: PTFE spray layer inert, in addition to individual media, can withstand a variety of acids, alkali, salt and organic matter (solvent). Teflon is almost impermeable to any chemical attack and can protect parts from any kind of chemical attack. Therefore, in order to avoid serious economic losses caused by corrosion, the modern processing industry will choose to spray polytetrafluoroethylene coating on the process equipment for protection.

People often ask, how long can you spray Teflon paint on the mold? How many molds can you take off? To answer the question about the life of Teflon paint, it is necessary to first explain what factors affect the life of Teflon paint. There are three main factors that affect the service life of Teflon coatings. First: coating formula 1.The primer resin content is too low In popular terms, the primer is equivalent to glue, the top paint and the mold together, the glue in the primer is resin, it is to provide adhesion for the top paint and mold, if the primer filler is too much, the content of the resin is too little, affecting the adhesion of the primer, easy to fall off the paint, the service life of the mold is shortened. In addition, if you choose a low resin content of the emulsion as a raw material, this is one of the factors of low resin content. 2.Too little resin in the top paint The role of the top paint is mainly to play a non-stick effect, if you choose a low resin content of the emulsion as a raw material, or add too much water, etc., the resin proportion of the top paint is not enough, the solid content is low, the non-viscosity is not durable, after a period of use, the mold is easy to stick to the product. 3.Unreasonable formula design If the mold is found in the process of use that the top paint falls off and the primer does not fall off, it may be that the paint formula design is unreasonable, the adhesion of the opposite paint of the primer is not good, and the bottom surface is easy to separate. Second: construction technology 1.Choose the right paint No coating is suitable for all types of molds, before selecting the coating, you need to communicate with the customer's requirements, feedback information to the coating factory, and choose the coating according to the recommendation of the coating factory. 2.Mold sandblasting is not good Teflon paint has high requirements for the treatment of the substrate, and no sandblasting or bad spraying will affect its adhesion and easy to drop paint. In addition, if you choose too fine sand, the roughness after sandblasting is not enough, it will also affect the adhesion, we recommend using 80-120 mesh, the roughness after sandblasting is 3-5 microns. 3.The baking temperature of the top paint is improper If the baking temperature of the top paint is too high or the time is too long, a small part of the coating will begin to carbonize and decompose. If the temperature is too low or the time is too short, the adhesion of the top paint on the primer is very poor, so these will affect the service life of the mold. 4.Paint is too thin The primer is too thin, the adhesion is not enough, the top paint is too thin, and the non-adhesive is not durable, which all affect the service life of the mold. 5.The heat of the primer is too high After the primer is sprayed, it needs to be baked about 150-180 ° C, however, if the temperature is too high, baked to more than 220 ° C, and then baked at high temper...