Recently, a material named organic polyborosilazane has garnered attention in the field of materials science. This material, also known as "ceramizable precursor polymer," is demonstrating unique application potential.
Organic polyborosilazane is a liquid precursor polymer composed of repeating Si - N units and Si - N - B units. It boasts a "dual identity" - functioning both as a thermosetting resin and a ceramic precursor. Under relatively mild conditions, it can be converted into SiBCN ceramic products with excellent high - temperature resistance through pyrolysis, offering a new option for material applications in high - temperature environments.
Its pyrolysis process is quite distinctive. Upon high - temperature pyrolysis, the cured substance first transforms into amorphous ceramics. When the temperature exceeds 1600℃, it begins to transition into crystalline ceramics. Moreover, the composition of the ceramic products is closely related to the pyrolysis atmosphere. In a nitrogen or argon environment, the pyrolysis products are mainly SiC and Si₃N₄; under an ammonia atmosphere, Si₃N₄ dominates; and in an air environment, SiBOCN is primarily generated. In addition, the pyrolysis of the cured substance is influenced by fillers, which in turn alters the composition of the final ceramic products. This provides a new approach for regulating ceramic properties.
In terms of usage and storage, organic polyborosilazane also has special requirements. It can be diluted with various polar or non - polar dry solvents. However, it is highly incompatible with water and alcoholic solvents. Once in contact, hydrolysis or alcoholysis reactions occur, leading to product deterioration. Meanwhile, it should be kept away from protic substances such as acids and alkalis.
Due to these characteristics, organic polyborosilazane holds broad application prospects in numerous fields, including aerospace, electronic packaging, and high - temperature structural materials. With in - depth research, it is believed that this amazing material will bring more surprises to materials science and propel related industries towards a new stage of development.
Room termperature curing polysilazane, pls check
IOTA 9150, IOTA 9150K.
High termperature curing polysilazane, pls check
IOTA 9108,
IOTA 9118.