39 results about "Zirconocene dichloride" patented technology

The invention relates to a photosensitive Zr-B-Si-C ceramic precursor and an in-situ preparation method thereof. The method is as follows: mix methyl vinyl dichlorosilane and borane dimethyl sulfide evenly, then add metal sodium for dechlorination to obtain methyl vinyl borosilane; mix chloromethyl trichlorosilane, methyl chloride Methyldichlorosilane and dichlorozirconocene are mixed evenly, then metal magnesium is added for the first heat preservation reaction, and then a reducing agent is added for the second heat preservation reaction to obtain polyzirconium carbosilane; methylvinyl borosilane and polyzirconium Carbosilane is mixed uniformly to obtain vinyl Zr-B-Si-C alkane; vinyl Zr-B-Si-C alkane is mixed with mercaptopropionate evenly, and then a photoinitiator is added to initiate a polymerization reaction to obtain the ceramic Precursor. The invention solves the problems of high viscosity, large thermal stress, and attenuation of mechanical properties of structural parts in traditional light-curing systems, and provides high-quality raw materials for light-curing 3D printing ultra-high temperature ceramic structural parts.

The invention relates to a preparation method of a compound, in particular to a method for preparing liquid anaerobic polyzirconocarbosilane, relates to a preparation method of a compound, and provides a method for directly preparing the liquid anaerobic polyzirconocarbosilane through binary or ternary polymerization of chloromethylsilane and zirconocene dichloride. The method comprises the steps as follows: 1), under the protection of an inert atmosphere, the chloromethylsilane and the zirconocene dichloride are mixed simultaneously and dissolved in absolute ether; 2), magnesium metals are added into a mixed solution obtained in the step 1) in batches for reaction; 3), under the protection of the inert atmosphere, a reducing agent is added in batches into a reaction mixed material obtained in the step 2) for reaction; and 4), under the protection of the inert atmosphere, an organic solvent is added into a reaction mixed material obtained in the step 3), an organic phase is extracted, standing is performed, an upper-layer organic phase is separated, the organic solvent is removed through filtration, and the liquid anaerobic polyzirconocarbosilane is obtained.

A method for synthesizing an ultra-high temperature resistant ZrC / SiC composite ceramic precursor, comprising the following steps: (1) under the protection of an inert gas atmosphere, dissolving zirconocene dichloride in an organic solvent, stirring and adding an organolithium compound, a compound (2) Under the protection of an inert gas atmosphere, add the halosilane monomer to the active component a obtained in the stirring step (1), and a polymerization reaction occurs to obtain component b, drop The reaction is terminated by adding a terminator, concentrated by filtration, purified by precipitation, and dried in vacuum to obtain the precursor of ultra-high temperature resistant ZrC / SiC multiphase ceramics. The present invention starts from the monomer and polymerizes step by step, the product chain length is controllable and uniform, and ZrC / SiC multi-phase ceramics with high purity and good uniformity can be further prepared; the two-step process is simple and can be reacted at normal temperature and pressure , the conditions are easy to control, the raw materials are easy to obtain, and are suitable for large-scale production.