Optimize reaction conditions
Accurate temperature control: Accurately adjust the reaction temperature during the synthesis of polysilazane, and different reaction systems have their suitable temperature ranges. For example, when using silicon containing compounds to react with ammonia or amine substances for preparation, the optimal reaction temperature can be explored through experiments to avoid excessive temperature leading to increased side reactions, product decomposition, and other situations. At the same time, low temperature can prevent slow reaction rate and incomplete reaction, thereby improving the conversion rate of raw materials and increasing yield.
Reasonably regulating pressure: For reactions that require specific pressure environments, controlling pressure reasonably is crucial. In the process of synthesizing partial polysilazane through high-temperature and high-pressure reactions, pressure parameters are accurately set based on the characteristics of the reaction system to ensure efficient reaction towards the formation of polysilazane and promote the shift of reaction equilibrium towards a direction conducive to improving yield.
Strictly control the atmosphere: keep the reaction in a suitable inert atmosphere (such as high-purity nitrogen, argon, etc.) to prevent impurities such as oxygen and moisture from entering the reaction system and causing side reactions. For example, when preparing polysilazane by reacting silicon halides with ammonia, a stable inert gas is continuously introduced to create a favorable reaction environment, reduce raw material waste caused by impurities participating in the reaction, and improve yield.
Improve raw material selection and pretreatment
Selection of high-purity raw materials: Priority should be given to using high-purity starting materials such as silicon halides, ammonia or amines, and silicon hydride compounds. Raw materials with low impurity content can reduce the possibility of side reactions, allowing the reaction to proceed more efficiently towards the formation of polysilazane and increasing the yield of the target product. For example, when silicon halides with a purity of over 99.9% are used in the reaction, the selectivity and yield of the reaction can be significantly improved.
Pre treatment of raw materials: For some raw materials that are prone to moisture absorption and contain small amounts of impurities, pre-treatment operations such as drying and impurity removal should be carried out before use. For example, for some silicon containing monomers, trace amounts of water and impurities can be removed through methods such as vacuum distillation and recrystallization to ensure that the raw materials participate in the reaction in the optimal state, which helps to improve the yield of polysilazane.
Optimize reaction process
Selecting suitable catalysts: Screening efficient and selective catalysts for the synthesis reaction of polysilazane. For example, in some stages of hydrosilylation reactions, selecting suitable transition metal catalysts (such as platinum based catalysts) can significantly accelerate the reaction rate, while guiding the reaction towards the formation of the target polysilazane product, reducing the generation of by-products, and effectively improving the yield.
Improve the reaction feeding method: adopt batch feeding, dropwise addition and other methods to ensure that the reactants can fully contact and react at the appropriate concentration. For example, in the operation of slowly adding ammonia dropwise to a silicon halide solution, it is necessary to avoid excessive concentration of reactants that may cause violent side reactions, making the reaction smoother and more complete, thereby improving the yield.
Optimize reaction time: Accurately determine the optimal reaction time through experiments to avoid adverse situations such as insufficient reaction time leading to incomplete reaction of raw materials or excessive reaction time causing product decomposition. For example, in a specific synthesis reaction of polysilazane, after multiple small-scale experiments, it was determined that the highest product yield was achieved after 3-5 hours of reaction. Based on this, the reaction time for large-scale production was arranged.
Strengthen process monitoring and post-processing
Real time monitoring of reaction process: Modern analytical techniques such as infrared spectroscopy, nuclear magnetic resonance, etc. are used to monitor the reaction process in real time, timely grasp the progress of the reaction, the conversion of raw materials, and other information, so as to adjust the reaction conditions (such as temperature, feeding rate, etc.) in a timely manner according to the actual situation, ensure the efficient completion of the reaction, and improve the yield.
Optimize separation and purification process: Develop efficient separation and purification methods to accurately separate polysilazane from by-products, unreacted raw materials, etc. For example, advanced chromatographic separation technology, membrane separation technology, etc. can be used to improve the recovery rate of products, reduce losses in the separation and purification process, and indirectly increase the final yield of polysilazane.
Developing new synthetic methods
Exploring new reaction pathways: Actively conducting basic research and exploring novel reaction pathways for the synthesis of polysilazanes to overcome the yield limitations in existing methods in principle. For example, researching new organic silicon compound conversion reactions based on green chemistry concepts has opened up a new pathway for efficient, highly selective, and high-yield synthesis of polysilazanes.
Combining new technological means: using emerging technologies such as nanotechnology and microwave radiation to assist in the synthesis of polysilazane. For example, using microwave radiation technology to heat the reaction system can achieve rapid and uniform heating effects, accelerate reaction rates, increase yields, and potentially improve product performance.

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