Flame-retardant polystyrene/layered inorganic nanocomposite and preparation method thereof
An inorganic, layered technology, applied in the field of phosphorus-nitrogen flame retardant polystyrene/layered inorganic nanocomposite and its preparation, can solve the problem of low flame retardant efficiency, difficulty in meeting flame retardant requirements, and flame retardant components. Single problem, to achieve the effect of good compatibility, good fire protection, high flame retardant efficiency
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Embodiment 1
[0026] In a 250ml three-neck flask equipped with mechanical stirring and a constant pressure dropping funnel, add 21.1g (0.1mol) of phenyl phosphate dichloride and 80ml of tetrahydrofuran, stir in an ice bath at -5 to 5°C, and after 20 minutes, add 21.2 g (0.21 mol) of triethylamine, and slowly add a mixed solution of 11.6 g (0.1 mol) of hydroxyethyl acrylate and 20 ml of tetrahydrofuran dropwise within 2 hours under continuous stirring, and continue to react for 4 hours. Then, 7.32 g (0.1 mol) of diethylamine was dissolved in 80 ml of tetrahydrofuran, and slowly dropped into the above reaction system under the condition of ice bath at -5-5° C. under constant stirring, and reacted for 8 hours. Suction filtration under reduced pressure to remove the triethylamine salt, distillation under reduced pressure to remove the solvent, and the obtained light yellow transparent liquid is the product of the present invention. The yield was 80%.
[0027] The obtained product was analyzed ...
Embodiment 2
[0031] In a 250ml three-necked flask equipped with mechanical stirring and a constant pressure dropping funnel, add 21.1g (0.1mol) phenyl phosphate dichloride and 80ml methylene chloride, stir in an ice bath, and after 10 minutes, add 21.2g (0.21 mol) triethylamine, then slowly dropwise added a mixed solution of 11.6 g (0.1 mol) of hydroxyethyl acrylate and 20 ml of dichloromethane in 2 hours under continuous stirring, and continued to react for 4 hours. Then 7.32 g (0.1 mol) of diethylamine was dissolved in 60 ml of dichloromethane, and slowly dropped into the above reaction system under constant stirring, and reacted for 8 hours. Suction filtration under reduced pressure to remove the triethylamine salt, distillation under reduced pressure to remove the solvent, and the obtained light yellow transparent liquid is the product of the present invention. The yield was 85%.
[0032] The obtained product was analyzed by nuclear magnetic resonance spectrum. The peak position of th...
Embodiment 3
[0035] In a 250ml three-neck flask equipped with mechanical stirring and a constant pressure dropping funnel, add 21.1g (0.1mol) phenyl phosphate dichloride and 80ml tetrahydrofuran, stir in an ice bath, and after 10 minutes, add 21.2g (0.21mol) Triethylamine, and a mixed solution of 11.6 g (0.1 mol) of hydroxyethyl acrylate and 20 ml of tetrahydrofuran was slowly added dropwise within 2 hours under continuous stirring, and the reaction was continued for 4 hours. Then diethylamine was dissolved in 80ml of tetrahydrofuran, and slowly dropped into the above reaction system under continuous stirring, and reacted for 8 hours. Suction filtration under reduced pressure to remove the triethylamine salt, distillation under reduced pressure to remove the solvent, and the obtained yellow transparent liquid is the product of the present invention. The yield was 80%.
[0036]The obtained product was analyzed by nuclear magnetic resonance spectrum. The peak position of the chemical shift ...
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Abstract
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