A kind of preparation method of highly flame-retardant cross-linked polyphosphazene elastomer
An elastomer, polyphosphazene technology, applied in fire-resistant coatings and other directions, can solve the problems affecting polyphosphazene, flame retardancy, thermal stability reduction, etc., and achieve strong steric hindrance effect, excellent flame retardancy, and large volume. Effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment example 1
[0015] Take 0.72mol of sodium hydride, 0.1molg of ethylene glycol, 0.5mol of phenol, and 0.1mol of hexachlorocyclotriphosphazene (molar ratio 7.2:1:5:1), and use tetrahydrofuran as a solvent to configure a corresponding solution, and the sodium hydride solution Put it in a three-necked flask, protect it with nitrogen gas, under the condition of ice-water bath, drop ethylene glycol and phenol solution into the sodium hydride solution drop by drop at constant pressure, react until the system changes from turbid liquid to clear, and then add hexachlorocyclotri The phosphazene solution was dripped into the reaction system drop by drop at constant pressure. After reacting for 4 hours, the reaction solution was poured out. After standing still, the layers were separated. The lower layer was milky white impurities, and the upper layer was light yellow hydroxyethoxyphenoxycyclotriphosphazene solution. Separate the supernatant for later use; take 100.0g of hexachlorocyclotriphosphazene,...
Embodiment example 2
[0017] Take 1.44mol of sodium hydride, 0.2mol of ethylene glycol, 1.0mol of phenol, and 0.2mol of hexachlorocyclotriphosphazene (molar ratio 7.2:1:5:1), and use tetrahydrofuran as a solvent to configure a corresponding solution, and the sodium hydride solution Put it in a three-necked flask, protect it with nitrogen gas, under the condition of ice-water bath, drop ethylene glycol and phenol solution into the sodium hydride solution drop by drop at constant pressure, react until the system changes from turbid liquid to clear, and then add hexachlorocyclotri The phosphazene solution was dripped into the reaction system drop by drop at constant pressure. After reacting for 8 hours, the reaction solution was poured out. After standing still, the layers were separated. The lower layer was milky white impurities, and the upper layer was light yellow hydroxyethoxyphenoxycyclotriphosphazene solution. Separate the supernatant for later use; take 200.0 g of hexachlorocyclotriphosphazene,...
Embodiment example 3
[0019]Take 1.44mol of sodium hydride, 0.2mol of ethylene glycol, 1.0mol of phenol, and 0.2mol of hexachlorocyclotriphosphazene (molar ratio 7.2:1:5:1), and use tetrahydrofuran as a solvent to configure a corresponding solution, and the sodium hydride solution Put it in a three-necked flask, protect it with nitrogen gas, under the condition of ice-water bath, drop ethylene glycol and phenol solution into the sodium hydride solution drop by drop at constant pressure, react until the system changes from turbid liquid to clear, and then add hexachlorocyclotri The phosphazene solution was dripped into the reaction system drop by drop at constant pressure. After reacting for 6 hours, the reaction solution was poured out. After standing still, the layers were separated. The lower layer was milky white impurities, and the upper layer was light yellow hydroxyethoxyphenoxycyclotriphosphazene solution. Separate the supernatant for later use; take 200.0 g of hexachlorocyclotriphosphazene, ...
PUM
Property | Measurement | Unit |
---|---|---|
decomposition temperature | aaaaa | aaaaa |
decomposition temperature | aaaaa | aaaaa |
decomposition temperature | 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