JPS6445817A - Production of silicon nitride yarn - Google Patents
Production of silicon nitride yarnInfo
- Publication number
- JPS6445817A JPS6445817A JP20276687A JP20276687A JPS6445817A JP S6445817 A JPS6445817 A JP S6445817A JP 20276687 A JP20276687 A JP 20276687A JP 20276687 A JP20276687 A JP 20276687A JP S6445817 A JPS6445817 A JP S6445817A
- Authority
- JP
- Japan
- Prior art keywords
- yarn
- perhydropolysilazane
- modified
- modified perhydropolysilazane
- silicon nitride
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
PURPOSE:To obtain the titled yarn useful as a material for space navigation, having high heat insulating properties and heat resistance, by spinning a spinning solution containing modified perhydropolysilazane to form modified perhydropolysilazane yarn and further calcining the yarn. CONSTITUTION:A basic compound such as tertiary amine is added to perhydropolysilazane, which is under a basic condition and subjected to polycondensation reaction in the presence (or absence) of ammonia or hydrazine to form modified perhydropolysilazane. Then the modified perhydropolysilazane is incorporated with a solvent inert to the modified perhydropolysilazane to prepare a spinning solution, which is spun by using a dry melting device to give modified perhydropolysilazane yarn. Then the yarn is calcined in vacuum or in an atmosphere of a gas such as nitrogen or argon to give the aimed silicon nitride yarn.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62202766A JPH0823087B2 (en) | 1987-08-13 | 1987-08-13 | Method for producing silicon nitride fiber |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62202766A JPH0823087B2 (en) | 1987-08-13 | 1987-08-13 | Method for producing silicon nitride fiber |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6445817A true JPS6445817A (en) | 1989-02-20 |
JPH0823087B2 JPH0823087B2 (en) | 1996-03-06 |
Family
ID=16462816
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62202766A Expired - Fee Related JPH0823087B2 (en) | 1987-08-13 | 1987-08-13 | Method for producing silicon nitride fiber |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0823087B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5217002A (en) * | 1990-05-14 | 1993-06-08 | Asahi Kogaku Kogyo Kabushiki Kaisha | Flexible tube of endoscope and method of producing the same |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62125015A (en) * | 1985-11-19 | 1987-06-06 | Toa Nenryo Kogyo Kk | High-purity silicon nitride fiber and production thereof |
-
1987
- 1987-08-13 JP JP62202766A patent/JPH0823087B2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62125015A (en) * | 1985-11-19 | 1987-06-06 | Toa Nenryo Kogyo Kk | High-purity silicon nitride fiber and production thereof |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5217002A (en) * | 1990-05-14 | 1993-06-08 | Asahi Kogaku Kogyo Kabushiki Kaisha | Flexible tube of endoscope and method of producing the same |
Also Published As
Publication number | Publication date |
---|---|
JPH0823087B2 (en) | 1996-03-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
LAPS | Cancellation because of no payment of annual fees |