A preparation method of silicon-phosphorus synergistic flame-retardant graphene polymer material
A polymer material, synergistic flame retardant technology, applied in the field of materials, can solve problems such as poor flame retardancy, and achieve the effects of improving stability and strength, reducing agglomeration, and improving flame retardant and fire performance.
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Embodiment 1
[0020] A method for preparing a silicon-phosphorus synergistic flame-retardant graphene polymer material, comprising the following steps:
[0021] (1) Take graphene oxide, add it to 10 times its weight in absolute ethanol, raise the temperature to 55°C, add propylene oxide, keep stirring for 30 minutes, and obtain an epoxy solution;
[0022] (2) Take dodecyl primary amine, add it to pentaerythritol 5 times its weight, stir evenly, add the above epoxy solution, stir and react for 13 hours, add dropwise phosphoric acid aqueous solution with a concentration of 6%, and rise to The highest temperature is 100°C, add stannous octoate, keep it warm for 7 hours, filter, wash the precipitate with water, dry at 90°C for 3 hours in vacuum, and cool to obtain phosphoesterified graphene;
[0023] (3) Take sorbitan monostearate, add it to ethyl acetate whose weight is 18 times, stir and dissolve, add phosphorylated graphene, and preheat at 60°C for 20 minutes to obtain an ester dispersion; ...
Embodiment 2
[0031] A method for preparing a silicon-phosphorus synergistic flame-retardant graphene polymer material, comprising the following steps:
[0032] (1) Take graphene oxide, add it to 3 times its weight in absolute ethanol, raise the temperature to 40-55°C, add propylene oxide, keep stirring for 20 minutes, and obtain an epoxy solution;
[0033] (2) Take dodecyl primary amine, add it to pentaerythritol which is 3 times its weight, stir evenly, add the above epoxy solution, stir and react for 10 hours, add dropwise phosphoric acid aqueous solution with a concentration of 4%, and rise to The maximum temperature is 90°C, add stannous octoate, keep it warm for 5 hours, filter, wash the precipitate with water, dry it under vacuum at 70°C for 2 hours, and cool to obtain phosphoesterified graphene;
[0034] (3) Take sorbitan monostearate, add it to ethyl acetate whose weight is 16 times, stir and dissolve, add phosphoesterified graphene, and preheat at 50°C for 10 minutes to obtain an ...
Embodiment 3
[0042] A method for preparing a silicon-phosphorus synergistic flame-retardant graphene polymer material, comprising the following steps:
[0043] (1) Take graphene oxide, add it to 5 times its weight in absolute ethanol, raise the temperature to 40-55°C, add propylene oxide, keep stirring for 25 minutes, and obtain an epoxy solution;
[0044] (2) Take dodecyl primary amine, add it to pentaerythritol which is 3 times its weight, stir evenly, add the above epoxy solution, stir and react for 12 hours, add dropwise phosphoric acid aqueous solution with a concentration of 4%, and rise to The highest temperature is 95°C, add stannous octoate, keep it warm for 5 hours, filter, wash the precipitate with water, dry at 75°C for 2 hours in vacuum, and cool to obtain phosphoesterified graphene;
[0045] (3) Take sorbitan monostearate, add it to ethyl acetate whose weight is 16 times, stir and dissolve, add phosphoesterified graphene, and preheat at 55°C for 15 minutes to obtain an ester ...
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