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Recently, a material named Organic Polyborosilazane (Ceramizable Precursor Polymer) IOTA 9120 has drawn significant attention in the field of materials science. This light - yellow liquid precursor polymer, composed of repeating Si - N units and Si - N - B units, possesses the dual characteristics of a thermosetting resin and a ceramic precursor.
The curing methods of IOTA 9120 are highly flexible. It can undergo cross - linking curing in air or an inert atmosphere at 120 - 180℃. Additionally, it can be cured through a hydrosilylation reaction using a platinum catalyst at 80 - 100℃, with a curing time generally ranging from 2 - 5 hours. After high - temperature pyrolysis, the cured product forms amorphous ceramics below 1600℃ and begins to crystallize above 1600℃. Moreover, the composition of the ceramic product is closely related to the pyrolysis atmosphere.
This material has several remarkable advantages. Its low viscosity makes it easy to process. The short curing time and diverse curing methods can effectively improve production efficiency. It has a high ceramic yield and good adhesion to metals, ceramics, and graphite, facilitating the preparation of SiBCN ceramics with good temperature resistance. However, it is sensitive to water and alcohol solvents and should avoid contact with protic substances such as acids and bases.
In terms of applications, IOTA 9120 shows broad prospects. It can be used in ceramic matrix composites (CMCs), metal matrix composites, high - temperature adhesives, anti - corrosion coatings, high - temperature oxidation - resistant ceramic coatings, ceramic preform impregnants, thermosetting resins, and organic - inorganic hybrid materials. It is believed that with in - depth research, IOTA 9120 will play an important role in more fields and drive further development in materials science.
Room termperature curing polysilazane, pls check IOTA 9150, IOTA 9150K.
High termperature curing polysilazane, pls check IOTA 9108, IOTA 9118.