Method for preparing nitride ceramic fibre
A technology for nitride ceramics and fibers, which is applied in the field of high-temperature thermal cracking and transformation to prepare multi-component nitride ceramic fibers, can solve the problems of unfavorable popularization and application, high cost, complicated process, etc., and achieves low cost, reliable source and high synthesis yield. Effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0028] Embodiment 1: SiAlNC fiber preparation example ①
[0029] (1) Dichloromethylsilane and aluminum trichloride are dissolved in xylene, meanwhile, vacuumize repeatedly in the three-necked flask reactor of 250ml with stirring, dripping, distillation device, fill dry nitrogen at least three times, (2) Take 0.15mol of dichloromethylsilane and 0.15mol of aluminum trichloride into a three-necked flask protected by dry nitrogen, and then inject 0.9mol of hexamethyldisilazane into a constant pressure In the funnel, add hexamethyldisilazane dropwise to the mixed solution of dichloromethylsilane and aluminum trichloride, and stir while adding; Raise the temperature of the reactor to 280°C at a rate of / min, and keep it warm at this temperature for 10 hours; (4) Lower the temperature of the reactor to 150°C, distill under reduced pressure for 0.5 hours, and cool naturally to room temperature to obtain solid polyaluminum silicon Azane precursor 12.2g; (5) Place the precursor obtaine...
Embodiment 2
[0030] Embodiment 2: SiAlNC fiber preparation example ②
[0031] (1) Dissolve aluminum trichloride in toluene, at the same time, repeatedly vacuumize and fill dry nitrogen at least three times in a 250ml three-necked flask reactor with stirring, dropping, and distillation devices to get rid of air and moisture therein (2) Take 0.15mol of aluminum trichloride and add it to a three-necked flask protected by dry nitrogen, then take 0.6mol of hexamethyldisilazane and add it to a constant pressure funnel, then add hexamethyldisilazane dropwise Add it into the aluminum chloride solution in the way of adding, and stir while adding it dropwise; (3) after the dropwise addition is completed, the reactor is heated to 300°C at a rate of 0.5°C / min, and is kept at 290°C for 8 hours; (4) ) The temperature of the reactor was lowered to 105° C., and the vacuum distillation was performed for 0.5 hour to obtain 19.2 g of polyaluminosilazane precursor. (5) Place the polyaluminosilazane precursor...
Embodiment 3
[0032] Embodiment 3: SiBAlNC fiber preparation example ①
[0033] (1) boron trichloride, aluminum trichloride are dissolved in normal hexane, meanwhile, repeatedly vacuumize in the there-necked flask reactor of 250ml with stirring, dropwise, distillation unit, fill dry nitrogen at least three times, with Exclude the air and moisture therein; (2) Take 0.15mol of boron trichloride and 0.3mol of aluminum trichloride successively into a three-necked flask protected by dry nitrogen, then take 0.6mol of heptamethyldisilazane and add to constant pressure In the funnel, heptamethyldisilazane was added dropwise to the mixed solution of the first two monomers, and stirred while adding; (3) after the dropwise addition was completed, the The reactor was heated up to 320°C, and kept at this temperature for 12 hours; (4) the temperature of the reactor was lowered to 165°C, and after vacuum distillation for 0.5 hours, it was naturally cooled to room temperature to obtain the solid polysilabo...
PUM
Property | Measurement | Unit |
---|---|---|
softening point | aaaaa | aaaaa |
diameter | aaaaa | aaaaa |
tensile strength | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com