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High temperature resistant coating is the functional coatings that can refer to more thanmake substrate function in under the condition of high temperature (the temperture is usuallymore than200℃). High temperature resistant coatings have been widely applied to variousfields due to its good performance, such as: aerospace, transportation, electrical, etc. At thesame time, its important role also causes extensive concern of more and more people.System, this paper studied the high temperature resistant silicon fluorine resin coating ofpaint formula and basic properties of high temperature resistant coatings was tested. This hightemperature resistant coating is prepared with1053organic silicon resin and ptfe resin as themain film-forming material, titanium dioxide, talcum powder, mica powder, wollastonite andiron oxide red as fillers, at the same time joining the solvent, additives. The main content ofthis paper is determining the types and dosage of fillers, determining the proportion of thefluorine silicone, ultimately determining the high temperature resistant coating formulations.At the same time, we will test a series of basic properties of the formula of the preparation ofhigh temperature resistant coatings, and focus on testing the preparation of high temperatureresistant coatings with the formula of temperature resistance and resistance to hot and colddenaturation. All of these show that the high temperature resistant coating has the very goodperformance.(1) Select and determine the appropriate fillers and its dosage. First of all, we must tochoose the appropriate fillers based on some properties of high temperature resistant siliconfluorine resin coating and the final demand of coating. And experiments of this paper selectefillers is titanium dioxide, talcum powder, mica powder, wollastonite and iron oxide red. Then,use five kinds of fillers for five factors, four levels orthogonal table, we will prepare thecoating with the fluorine silicon resin ratio is5:5and resin mixture is100g, the proportion ofthe mixture of resin and fillers is1:1, at the same time joining the orthogonal tables requiredto add fillers, adding suitable amount of solvents, additives. Using the temperature toleranceas the test basis, we choose the best and highest cost performance of the resistant groupoptimal dosages of the fillers as fillers, namely the optimal solution. The optimal solution ofthe fillers content of titanium dioxide respectively15g, talcum powder10g, mica powder8g, wollastonite4g, iron oxide red for13g.(2) Determining the ratio of fluorine and silicone resin. Respectively, we prepare theresin mixture that the ratios of the organic fluorine resin and silicone resin are2:8,4:6,5:5,6:4,8:2. At the same time the ratio of the mixture of two kinds of resin and fillers is1:1,joining the amount of fillers of the experiment get fillers. Then we prepare five kinds ofcoatings with the optimal solution and adding suitable amount of additives, solvents. Testingthe properties of the coating that was prepared, such as: contact Angle, adhesion, etc. Theratio of the fluorine is determined according to testing these properties as the main basis.According to the experiment of high temperature resistant organic, the best ratio of fluorinefluorine and silicone coating resin is5:5.(3) Testing the basic properties of coatings. The high temperature resistant siliconfluorine resin coating formula can be determined through that determining the selected fillersand the silicon and fluorine resin according to the two steps aboved, coupled with the rightamount of solvents, additives. Then we will prepaer the high temperature resistant coatingaccordance with the coating formulation preparation and test some basic properties ofcoatings, such as: adhesion force, contact angle, water resistance, temperature resistance,resistance to freeze-thaw stability, etc. Test results show that high temperature resistant siliconfluorine resin coating has good heat resistance at280℃.
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