A method for preparing continuous SIC fibers capable of wide-ranging controllable resistivity
A large-scale, resistivity technology, applied in the direction of fiber chemical characteristics, textiles and papermaking, etc., can solve the problems of difficult large-scale control of resistivity, difficult wide-range adjustment of resistivity, complex process conditions, etc., to reduce production The effect of cost, good mechanical properties and simple process
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
reference example 1
[0039] Put 2.8kg of polydimethylsilane and 1.5L of xylene in a high-temperature and high-pressure synthesis device, vacuumize, replace with nitrogen, repeat three times, and then raise the temperature to 430°C at a rate of 100°C / h under the protection of nitrogen, and keep it warm 8h, cool down to room temperature; take it out, add 1.5L xylene to dissolve, then filter to remove insoluble matter, put the filtrate in a distillation device, distill off xylene, then raise the temperature to 350°C at a rate of 60°C / h, reduce Distill under pressure for 2 hours and cool to room temperature to obtain SiC ceramic precursor polycarbosilane PCS-1 with a molecular weight of 3500 g / mol and a softening point of 170°C.
reference example 2
[0041] Put 1 kg of PCS-1 obtained in Reference Example 1, 20 g of aluminum acetylacetonate and 1.5 L of xylene in a synthesis device, vacuumize, replace with nitrogen, repeat three times, and under the protection of nitrogen, heat up to 300 °C at a rate of 100 ° C / h. ℃, keep warm for 5h, then heat up to 420°C at a speed of 60°C / h, keep warm for 2h, cool to room temperature, take it out and add 1.5L xylene to dissolve, then filter to remove insoluble matter, put the filtrate in a distillation device, and distill off After xylene, heat up to 350°C at 60°C / h, distill under reduced pressure for 2h, and cool to room temperature to obtain a SiC ceramic precursor polyaluminocarbosilane with a molecular weight of 4970g / mol and a softening point of 193°C. PACS-2.
reference example 3
[0043] Put 300g of liquid polysilane and 6g of ferrocene in a high-temperature and normal-pressure synthesis device, evacuate, replace with nitrogen, repeat three times, and then raise the temperature to 370°C at a rate of 100°C / h under the protection of nitrogen, and keep it warm for 10h. Cool to room temperature, take it out and add 500mL xylene to dissolve, then filter to remove insoluble matter, put the filtrate in a distillation device, distill off xylene, then raise the temperature to 350°C at a rate of 60°C / h, and distill under reduced pressure for 2h. After cooling to room temperature, the SiC ceramic precursor polyferrocarbosilane PFCS-3 with a molecular weight of 8500 g / mol and a softening point of 220° C. was obtained.
PUM
Property | Measurement | Unit |
---|---|---|
softening point | aaaaa | aaaaa |
electrical resistivity | 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