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...

Many people see that a lot of Teflon coatings used in industry are green, especially when used in molds, let's talk about the reasons. The use of coating characteristics In extrusion or die casting products, generally dark, for example, rubber, silicone and so on, if the coating is made of dark, then whether the coating falls off is more difficult to see. Therefore, made of light color and with bright colors, it is easier to identify whether the coating is complete, and if the coating falls off, it is processed in time. Many people may ask, why not make it in other colors, such as red, purple, etc.? Because the cost of green is low, and the cost of other colors is high. Teflon paint formula in the cost of powder accounted for a large proportion, green powder is cheap, Teflon paint is a high-temperature paint, the curing temperature is 380℃, bright colors can be difficult to such a high temperature is not much, another reason is, for example, red, purple powder is very expensive, generally hundreds of thousands of dollars a kilogram, this is a big difference in cost. A lot of people ask, why not make it blue, white? We also need to consider the temperature problem, the coating after 380 degrees of high temperature, will turn yellow, if the coating is white, the temperature of the oven is generally not very uniform, baked mold, the same oven, some white, some yellow, very unattractive. Blue is more obvious, as we all know, blue plus yellow becomes green, if it is a blue coating, the temperature is a little higher, the coating turns yellow, plus the color of the original coating, it shows green, for the oven with uneven temperature, baked products, some of them are blue, some of them are green, the customer may not accept. In summary Green is a better choice, because it is more bright, in the case of coating off, it is easy to be found, the cost is not high, and, and in the case of temperature is not uniform, it can spray a more beautiful mold, and the elasticity of the use conditions is wider. Company: Anhui Sinograce Chemical Co., Ltd. Focus on: non-stick coatings, Teflon coatings

Main properties of Teflon coating Teflon high-performance special coating is a fluorine coating based on polytetrafluoroethylene matrix resin, the English name is Teflon, because of the pronunciation, it is usually called Teflon, Teflon, Teflon, Teflon, etc. (all are translations of Teflon). Teflon coatings are a unique, high-performance coating that combines heat resistance, chemical inertia, excellent insulation stability and low friction, with a combination of advantages that no other coating can compete with, and its flexibility of application allows it to be used on almost all shapes and sizes of products. Teflon is divided into PTFE, FEP, PFA, ETFE several basic types. Application scope of Teflon coating: all kinds of cooking utensils, textile guide roller, textile drying cylinder, feed hopper, heat exchanger, industrial washing machine drum, all kinds of chemical reaction equipment (reaction kettle, stirrer, pump valve, etc.), offshore oilfield equipment, bridge bolts, auto parts, etc. Teflon coating characteristics 1.Non-adhesive: Teflon spray coating almost does not bond with any substance, only need to spray a thin layer of coating on the surface of the appliance can show a good non-adhesive performance. Therefore, Teflon is sprayed on baking utensils, baking pans and molds for food processing. When coated with Teflon, these appliances facilitate demoulding, resulting in a more consistent pastry shape. At the same time, the service life of these Teflon coated appliances is extended. 2.Thermal stability: Teflon 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 180 ° C and 200 ° C, and has significant thermal stability, it can work at freezing temperatures without embrittlement, and does not melt at high temperatures. Therefore, the Teflon spraying process can be added to the flue and porous plate in the electronics industry, the rice cooker, microwave oven and oven in the home appliance industry, and the mechanical container and cooling equipment in the chemical industry. 3.Sliding: Teflon 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. 4.Moisture resistance: the surface of Teflon coating is not wet and oily, and it is not easy to stick to 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. 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 coating has a strong inertia, in addition to individual media, can resist a variety of acids, alkali, salt and organic matter (solvent), Teflon is almost free from any chemical attack, can protect parts from any kind of chemical corrosion. Therefore, i...