Preparation method and application of cyclotriphosphazene containing silicon functional groups
A technology of cyclotriphosphazene and hexachlorocyclotriphosphazene is applied in the field of flame retardant, which can solve the problems of low yield and the like, and achieve the effects of high yield, high elongation at break and high oxygen index
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[0022] Example 1
[0023] 1) Add 14.61g of aminopropyltriethoxysilane and 7.28g of triethylamine to 20ml of tetrahydrofuran solvent, stir and mix uniformly, pass in argon, and slowly heat to 60°C;
[0024] 2) Dissolve 3.48g of hexachlorocyclotriphosphazene in 10ml of tetrahydrofuran solvent, magnetically stir to fully dissolve it, and then add it dropwise to the solution in step 1). A white precipitate is gradually formed. The dropping time is 30min. The reaction was carried out at ℃ for 10 hours; after the reaction, the product obtained was suction filtered to remove the white triethylamine hydrochloride, and then the filtrate was revolved in vacuum to remove the tetrahydrofuran solvent and excess triethylamine to obtain the silicon-containing functional group ring three Phosphononitrile is a light yellow-green liquid with a yield of 90.4%.
[0025] The spectral data of phosphazene compounds containing organosilicon groups are:
[0026] FT-IR(cm -1 ): 3235 (-NH), 1190 (P=N), 749 (P-...
Example Embodiment
[0029] Example 2
[0030] 1) Add 15.49g of aminopropyltriethoxysilane and 7.28g of triethylamine to 20ml of tetrahydrofuran solvent, stir and mix uniformly, pass in argon, and slowly heat to 60°C;
[0031] 2) Dissolve 3.47g of hexachlorocyclotriphosphazene in 10ml of tetrahydrofuran solvent, magnetically stir to fully dissolve it, and then add it dropwise to the solution in step 1). A white precipitate is gradually formed. The dropping time is 30min. The reaction was carried out at ℃ for 10 hours; after the reaction, the product obtained was suction filtered to remove the white triethylamine hydrochloride, and then the filtrate was revolved in vacuum to remove the tetrahydrofuran solvent and excess triethylamine to obtain the silicon-containing functional group ring three Phosphononitrile is a light yellow-green liquid with a yield of 93.5%.
[0032] The above synthesized 6g silicon-containing functional group cyclotriphosphazene, 24g ammonium polyphosphate and 70g polypropylene are...
Example Embodiment
[0034] Example 3
[0035] 1) Add 14.60g of aminopropyltriethoxysilane and 8.11g of triethylamine to 20ml of tetrahydrofuran solvent, stir and mix uniformly, pass in argon, and slowly heat to 60°C;
[0036] 2) Dissolve 3.48g of hexachlorocyclotriphosphazene in 10ml of tetrahydrofuran solvent, magnetically stir to fully dissolve it, and then add it dropwise to the solution in step 1). A white precipitate is gradually formed. The dropping time is 30min. The reaction was carried out at ℃ for 10 hours; after the reaction, the product obtained was suction filtered to remove the white triethylamine hydrochloride, and then the filtrate was revolved in vacuum to remove the tetrahydrofuran solvent and excess triethylamine to obtain the silicon-containing functional group ring three Phosphazene is a light yellow-green liquid with a yield of 91.4%.
[0037] The above synthesized 4g silicon-containing functional group cyclotriphosphazene, 26g ammonium polyphosphate and 70g polypropylene are comp...
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