To extend the service life of high-temperature resistant coatings, the following key aspects can be addressed:
Optimize the usage environment
Control temperature fluctuations: Try to avoid rapid and frequent temperature changes in the environment where the coating is located, as frequent thermal expansion and contraction can easily cause thermal stress inside the coating, leading to problems such as cracking and peeling. For example, for industrial furnaces using high-temperature resistant coatings, the temperature should be slowly adjusted according to reasonable operating procedures during the heating and cooling stages to reduce thermal shock.
Reduce the impact of corrosive media: Reduce the content of corrosive substances (such as acids, alkalis, salt spray, and sulfur) in the environment. If it is in a chemical production environment, it is necessary to ensure good sealing of the production equipment to prevent corrosive gases and liquids from leaking and coming into contact with the coating surface. If necessary, protective isolation facilities can be added, such as setting up corrosion-resistant sealing covers, to prevent the coating from being corroded and reducing its lifespan.
Reasonable pre-processing in the early stage
Cleaning and treatment of substrate surface: Before coating, it is necessary to thoroughly clean the substrate surface to remove impurities such as oil, rust, dust, etc., ensuring that the substrate surface is flat, clean, and has appropriate roughness. For example, using sandblasting, polishing and other processes to form micro concave convex structures on the surface of the substrate can enhance the adhesion between the coating and the substrate, prevent premature detachment of the coating during use, and thus extend its effective service life.
Choose a matching primer: Based on the substrate material and usage environment, select a suitable primer for primer treatment. Primer can further enhance the adhesion between the coating and the substrate, and also serve as a barrier to prevent external factors from corroding the coating. For example, for metal substrates, zinc containing primers can be used, which can enhance adhesion and provide electrochemical protection to the substrate to a certain extent, indirectly extending the life of high-temperature resistant coatings.
Correct coating construction and maintenance
Strictly control the construction process: Whether using spraying, brushing, or dipping methods, they must be operated according to the process parameters specified for the corresponding coating materials, such as controlling the spraying pressure, distance, and angle to ensure uniform coating thickness. Uneven coating thickness can easily lead to local heating and uneven stress, accelerating coating damage. For example, when thermal spraying ceramic coatings, it is necessary to accurately adjust the spray gun parameters to ensure that the formed coating thickness meets the design requirements.
Proper curing treatment of coatings: Many coatings need to be cured after construction, and the curing temperature, time, and other conditions should be strictly controlled to ensure that the coating is fully cured and achieves the best performance state. For example, some organic silicon high-temperature resistant coatings may not meet the curing temperature and time standards, resulting in insufficient cross-linking density of the coating. This will greatly reduce their high-temperature resistance and wear resistance, affecting their service life.
Regular inspection and repair: Establish a regular inspection system to promptly detect minor damages (such as scratches, local peeling, etc.) on the coating surface and carry out repairs. For minor damages, the same coating material can be applied for repair; For more serious cases, such as extensive peeling, it may be necessary to perform surface treatment again before applying the coating as a whole to eliminate the problem in its early stages and avoid further damage that could lead to premature coating failure.
Select high-quality coating materials
Pay attention to material performance indicators: choose coating materials with good high temperature resistance, strong oxidation resistance, high chemical stability, and good toughness. For example, selecting ceramic powder raw materials with high purity and suitable particle size to prepare ceramic coatings can result in a denser coating structure that is less likely to be damaged at high temperatures, effectively extending its service life.
Reference practical application cases: Consult manufacturers or institutions with similar usage scenarios to understand the performance and service life of different brands and models of coating materials in practical applications. Choose coating materials with good reputation and verified through practice to reduce the risk of short coating service life caused by poor material quality.

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