There are various methods for preparing silazane, and the following are some common preparation approaches:
Ammonolysis method
Principle: Silicon containing halides, hydrides, etc. react with ammonia or amines to generate silazane through the ammonolysis process. For example, chlorosilane reacts with ammonia, and the chlorine atom on the silicon atom is gradually replaced by an amino group, forming a silazane structure. Taking methylchlorosilane as an example, it reacts with ammonia, and the chlorine atom is replaced by the amino group. After a series of reaction steps, the corresponding methylsilane product is generated.
Amination reaction method
Principle: Silicon containing compounds react with compounds with amino groups to form silicon nitrogen bonds, resulting in silicon nitride. For example, some silane compounds containing active silicon hydrogen bonds (Si-H) can undergo addition reactions with amine compounds containing active amino groups, connecting silicon atoms to nitrogen atoms to form a silazane structure.
Rearrangement reaction method
Principle: Some existing compounds containing silicon and nitrogen undergo intramolecular or intermolecular rearrangement reactions under specific conditions (such as heating, catalyst presence, etc.), resulting in the formation of silazane. For example, some silicon amine compounds with special structures undergo chemical bond rearrangement under heating and catalytic action, transforming into more stable silicon nitride structures.
Partial cyclic silicon nitride compounds can undergo rearrangement through heating, altering the size or structure of the rings and generating silicon nitride products of different structural types.
Condensation reaction method
Principle: Compounds containing silanol groups (Si OH) undergo condensation reactions with compounds containing amino groups (- NH ₂) or amino groups (- NHR, etc.) to remove small molecules (such as water), form silicon nitrogen bonds, and ultimately produce silazane. For example, some silanol compounds react with amine substances at a certain temperature and suitable solvent environment, removing water molecules between hydroxyl and amino groups to construct the structural skeleton of silazane.
Synthesis methods involving metal organic compounds
Principle: With the help of metal organic compounds (such as organic lithium reagents, Grignard reagents, etc.), they first react with silicon containing compounds to generate intermediates containing specific active groups, and then further react with nitrogen containing compounds to produce silazane. For example, first using organic lithium reagents to react with chlorosilanes, the generated intermediates are then reacted with amines to construct silazane structures.

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