Heat-resistant coatings Organic silicone resins are used as coatings for temperatures (200°C or higher) that are not possible with ordinary organic resin-based coatings because of their heat-resistant properties. In addition, because of their excellent weathering and water resistance, they are highly resistant to outdoor deterioration and have a high affinity for ordinary inorganic pigments. Heat-resistant coatings are available in a wide variety of products depending on the application, material, and temperature range. Among them, silicone resins are widely used in many products.
The silicone bond (Si-O-Si), which forms the main structure of the molecular structure, has excellent heat resistance due to its strong bonding energy and high thermal decomposition temperature. Usually, in a high temperature environment of 250℃, decomposition, aging and discoloration hardly occur.
Coated aluminum pans are the most basic kitchen utensils, featuring light weight and low production costs. In addition, compared with inexpensive cast iron or stainless steel pans, aluminum pans use less oil, and the amount of fat used to make fish, omelets and pancakes is much lower, which also meets the needs of modern consumers who focus on healthy eating.
But for a long time, aluminum pans have had an Achilles' heel: poor heat resistance. That's why, when it comes to dishes that require high temperatures, such as sautéed steaks, discerning cooks prefer to choose pans made of other metals.
However, aluminum pans are constantly improving in this area: the inner surface is usually coated with polytetrafluoroethylene, better known as Teflon, and the outer surface is coated with silicone polyester resin.
Aluminum pans coated with silicone-polyester resins are able to withstand cooking temperatures of up to 250 ºC for a longer period of time, and even 300 ºC for a short period of time.
In contrast, conventional top-coating resins based on pure organic polymers are not very heat-resistant, but with silicone-modified polyester resins, the heat-resistance of the coating is significantly increased.
After the water in the coating has evaporated during the baking process, the coating is heated continuously for about 10-15 minutes at temperatures between 250 °C and 280 °C to complete the cross-linking reaction. Silicone resins are used as a base material to encapsulate the solid particles in the coating - pigments and fillers - so that they are firmly bonded to each other and to the substrate, resulting in a strong coating that protects the product from external influences.
If silicone resins are used without organic modification, the heat resistance of the coating will be unmatched, and such coatings can be used for engine parts. However, cooking utensils and other household items are used in far less demanding environments than engines, making the use of pure silicone resins completely unnecessary, and the higher cost of pure silicone resins would not make it the base material of choice for coatings for cookware. Silicone resins not only maintain excellent substrate adhesion, but also help to modulate coating properties to meet the needs of the specific application as closely as possible, while ensuring a good price/performance ratio.


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