Recently, organic polyborosilazane has achieved breakthrough progress in the field of ceramic matrix composites (CMCs), emerging as a key material driving the upgrading of high-end manufacturing industries such as aerospace and energy.

As a ceramicizable precursor polymer, the core advantage of organic polyborosilazane lies in its ability to generate high-temperature-resistant SiBCN ceramic products under mild cracking conditions. Taking the IOTA-9120 model as an example, when cracked in a nitrogen or argon atmosphere, this material yields ceramic products of SiC and Si₃N₄, demonstrating outstanding performance in the manufacturing of hot-section components for aero-engines. A certain type of commercial aero-engine employs a SiCf/SiC ceramic matrix composite combustion chamber fabricated through the precursor infiltration and pyrolysis (PIP) process using organic polyborosilazane. This innovation has successfully elevated the operating temperature to 1650℃, achieving a 30% weight reduction and a 15% improvement in fuel efficiency compared to traditional nickel-based superalloy components.

In terms of preparation technology, the ViSfP-TiCOP technology developed by Professor Zhang Zhongwei's team at Beijing Institute of Technology has achieved a significant breakthrough. By introducing active metals as gas-phase carbon-fixing/nitrogen-fixing initiators, this technology has shortened the preparation cycle of C/SiBCN composites from the traditional 9-16 rounds of the PIP process to just 3 rounds, reducing the densification time to within 400 hours and achieving a ceramic yield as high as 87%. This breakthrough addresses the industry's long-standing pain points of high costs and long cycles, providing a viable solution for the manufacturing of irregularly shaped components such as thermal protection systems for spacecraft and missile radomes.

With the advancement of China's "14th Five-Year Plan" for new materials, the technical standard system for organic polyborosilazane is gradually being perfected. The 2024 "Guidance Catalog for the Application Demonstration of the First Batch of Key New Materials" explicitly includes SiBCN-based ceramic matrix composites in the encouraged category, setting quantitative requirements for key performance indicators such as room-temperature tensile strength and fracture toughness. This policy orientation is accelerating the industrialization process of this material in extreme-environment application scenarios, including nuclear reactor blankets and thermal protection layers for hypersonic vehicles.

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