Choosing organic high-temperature resistant coatings suitable for specific high-temperature environments requires comprehensive consideration of the following aspects:
1、 Temperature requirements
Clarify the maximum operating temperature: Accurately understand the actual temperature range in high-temperature environments, such as whether it is long-term around 300 ℃ or occasionally reaches peak temperatures of 500 ℃ or even higher. If the long-term working temperature is between 200-400 ℃, organic silicon high-temperature resistant coatings can usually meet the requirements well; If the temperature frequently reaches around 500 ℃, it may be necessary to consider products with better high-temperature resistance, such as polyimides, in heterocyclic polymer high-temperature resistant coatings.
Considering the frequency of temperature changes: If the temperature fluctuates frequently in high temperature environments, it is necessary to choose coatings with good flexibility and the ability to adapt to thermal expansion and contraction changes to avoid problems such as coating cracking and peeling caused by frequent temperature changes. Organic silicon high-temperature resistant coatings have a relative advantage in this regard, and their film flexibility can better cope with substrate deformation caused by temperature changes.
2、 Substrate type
Adaptability of different materials: For metal substrates (such as steel, aluminum alloys, etc.), most organic high-temperature resistant coatings can have good adhesion, but special treatment may be required to ensure the adhesion of fluororesin high-temperature resistant coatings on some smooth metal surfaces; For inorganic non-metallic substrates such as ceramics and glass, organic silicon high-temperature resistant coatings can also have good adhesion effects after appropriate surface pretreatment; For polymer substrates such as plastics, coatings with good compatibility and no adverse effects such as corrosion on the substrate should be selected. For example, some modified silicone coatings may be more suitable.
Surface condition of substrate: If the surface of the substrate is rough, a coating with relatively less demanding surface treatment requirements and better filling properties can be selected to better cover the unevenness of the substrate surface; If the surface of the substrate is smooth, special attention should be paid to improving the adhesion of the coating, such as using matching primers.
3、 Characteristics of the usage environment
Chemical medium situation:
If there are corrosive chemicals such as acid and alkali in high-temperature environments, fluororesin high-temperature resistant coatings are a better choice due to their excellent chemical stability and ability to resist corrosive media such as acid, alkali, and salt; In simple high-temperature environments without strong corrosive chemicals, organic silicon high-temperature resistant coatings can meet the protection requirements.
For environments with oil stains, organic solvents, etc., it is necessary to ensure that the selected coating will not be dissolved or corroded by these substances. For example, in high-temperature equipment in chemical workshops where organic solvents evaporate, organic high-temperature resistant coatings with good resistance to organic solvents should be selected.
Weather resistance requirement: If high-temperature equipment is located in an outdoor environment and is exposed to wind, sun, rain, snow, and freezing for a long time, it requires coatings with good weather resistance. Organic silicon high-temperature resistant coatings perform well in such scenarios, effectively resisting damage to the coating from ultraviolet rays, moisture, and other factors, and maintaining stable coating performance for a long time.
4、 Coating performance requirements
Protection function focus: If mainly for rust prevention, organic high-temperature resistant coatings such as zinc rich primers can achieve good rust prevention effect through the sacrificial anode protection of zinc powder; If the focus is on anti-oxidation, anti-wear, etc., organic composite high-temperature resistant coatings such as ceramic based coatings may be more suitable due to their high hardness and good oxidation resistance.
Appearance requirements: If there are high requirements for the appearance of the coating, such as uniform color and brightness, it is necessary to choose a coating with good film-forming properties, uniform pigment dispersion, and less prone to coating defects such as sagging and orange peel. It is also necessary to ensure that it can maintain a good appearance after high temperature use, such as some high-quality organic silicon modified acrylic high-temperature resistant coatings that perform well in this regard.
5、 Construction conditions and cost constraints
Construction convenience: Consider whether the construction site, equipment conditions, etc. can meet the construction requirements of the coating. For example, some coatings require high-temperature baking and curing. If the construction site does not have the corresponding heating equipment, coatings that can be cured at room temperature or low temperature should be selected; Organic silicon high-temperature resistant coatings have multiple curing methods to choose from, which can adapt to different construction conditions.
Cost budget: comprehensively weigh factors such as the price, dosage, and construction cost of the coating itself. Although heterocyclic polymer high-temperature resistant coatings have excellent performance, their prices are relatively high, while organosilicon high-temperature resistant coatings have relatively low costs. Therefore, it is preferred to choose coatings with high cost-effectiveness to control cost expenditures while meeting usage requirements.
Only by comprehensively analyzing and weighing the above factors can we select the most suitable organic high-temperature resistant coating for a specific high-temperature environment.

Room termperature curing polysilazane, pls check IOTA 9150, IOTA 9150K.    
High termperature curing polysilazane, pls check IOTA 9108, IOTA 9118.