Heat-resistant polymer refers to polymer materials with good high temperature stability, widely used in aerospace, energy, electronics, building materials and other fields. In the field of modern industry and science and technology, polymer materials are an indispensable material. With the development of science and technology, people have higher and higher requirements for polymer materials, and high temperature stability is one of the important properties that polymer materials must have. Heat-resistant polymer materials have good performance in high temperature environment, such as high temperature strength, high heat resistance, high oxidation stability, low creep and better processing performance. Therefore, heat-resistant polymer materials are the mainstream materials to meet the needs of future high-temperature applications.
1. Aramid fiber
Aramid 1313 is a fiber with special features, first developed by DuPont in the United States. The appearance of this fiber is similar to ordinary chemical fibers, but has many unique characteristics. The most outstanding feature is its excellent resistance to high temperatures, which allows it to be used for long periods of time at temperatures up to 220°C without aging. At temperatures around 250°C, its dimensional stability is very good, with a heat shrinkage of only 1%. Aramid 1313 has an ultimate oxygen index of more than 28%, is a flame retardant fiber, does not promote combustion and has good self-extinguishing properties. It starts to decompose only above 370°C and carbonizes at around 400°C. Therefore, Aramid 1313 is widely used in areas such as protective clothing, train protection, aerospace and automotive industries to meet the demand for high performance, high durability and high temperature stability.
2.Phenyl silicone rubber
Phenyl silicone rubber relative to the existing methyl vinyl silicone rubber, phenyl silicone rubber temperature resistance is more excellent, its temperature range can be extended to -70 ℃ -350 ℃, the short-term operating temperature is more up to -110 ℃ -400 ℃, but also has a resistance to ablation and radiation resistance. Therefore, it is widely used in electric power, electronic appliances, automobiles, industrial deep cooling, aerospace, engines and other fields. Phenyl content of 5%-15% is called low phenyl silicone rubber; phenyl content of 15%-25% is called medium phenyl silicone rubber; and phenyl content of more than 30% is called high phenyl silicone rubber. With the increase of phenyl content, the molecular rigidity increases, and the radiation and flame resistance is also improved accordingly. However, the middle and high phenyl silicone rubber processing difficulties, poor physical and mechanical properties, and thus its production and application are subject to certain restrictions.
3. Boron silicone rubber
Borosilicone rubber is a special synthetic rubber, its silicone oxygen main chain with carbon-decaborane chain segment. It can be as high as 410 ° C in the short-term use of high temperature, long-term use of the general range between -40 ° C to 350 ° C, with other characteristics similar to silicone rubber. Borosilicone rubber can be processed and vulcanized like general silicone rubber, and is commonly used in the manufacture of sealing parts and insulating materials and other products that need to be used at high temperatures.
4. Polyimide
Polyimide is a polymer material, the main chain contains the imide structure, its molecular structure including aromatic rings and heterocycles and other major structural units. Polyimide has the highest flame retardant grade (UL-94), good electrical insulation properties, mechanical properties, chemical stability, aging resistance, irradiation resistance and low dielectric loss. At the same time, these properties do not change significantly over a wide temperature range (-269°C-400°C). Therefore, polyimide is widely used in microelectronics technology, aerospace, automotive, medical, chemical and other fields.
5.Polysilazane
Polysilazane polymers are a class of inorganic polymer materials containing repeats of Si-N in the main chain of the molecule. Due to the special nature of its chemical structure, it can be transformed into silica ceramics under high temperature conditions. Thus, polysilazane has important application value in high temperature resistance. Polysilazane resin silicon nitrogen bond angle is small, the molecular bond tension, so the molecular chain is not easy to ring, in the molecular polymerization reaction process is not easy to bite back, rearrangement and other side reactions, good thermal stability, by changing the substituents of silicon or nitrogen atoms can be designed to have a specific performance of the poly-silazane resins, high-temperature resistance (1800 ° C) is excellent, film hardness is high, ultra-thin varnish, low-viscosity; the majority of the type of Excellent adhesion to most types of substrates. 


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