Porous aerogel, preparation method thereof and antibacterial flame-retardant PP fiber containing porous aerogel
A porous airgel and fiber technology, which is applied in the fields of fiber chemical characteristics, fire-resistant and flame-retardant filament manufacturing, rayon manufacturing, etc. Low viscosity and other problems, to achieve the effect of good promotion value, excellent mechanical properties, large specific surface area
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Embodiment 1
[0037] The preparation of embodiment 1 porous airgel
[0038] S1. Put 10g of the mixed aqueous solution containing 3wt% NaOH and 5wt% urea into the refrigerator to freeze to -10°C, add 1g of graphene oxide to the mixed solution, mechanically stir the obtained graphene oxide solution for 5min, add 1g of carboxylate Sodium methylcellulose was added into another part of 30g mixed aqueous solution containing 3wt% NaOH and 5wt% urea, mechanically stirred for 1h to obtain sodium carboxymethylcellulose solution, and graphene oxide solution and sodium carboxymethylcellulose solution were prepared according to The volume ratio is 1:1 mixed to obtain a mixed solution;
[0039] S2. Pour 100g of liquid paraffin into the reactor, mechanically stir for 10min, drop 10g of the mixed solution into the liquid paraffin, and mechanically stir for 10min after the addition; then add 5g of epichlorohydrin into the liquid paraffin, at room temperature The reaction was carried out for 1 hour. After t...
Embodiment 2
[0040] The preparation of embodiment 2 porous airgel
[0041] S1. Put 30g of the mixed aqueous solution containing 5wt% NaOH and 10wt% urea into the refrigerator to freeze to -10°C, add 1g of graphene oxide to the mixed solution, mechanically stir the obtained graphene oxide solution for 5min, add 1g of carboxylate Sodium methylcellulose was added into another part of 50g mixed aqueous solution containing 5wt% NaOH and 10wt% urea, mechanically stirred for 2h to obtain sodium carboxymethylcellulose solution, and graphene oxide solution and sodium carboxymethylcellulose solution were prepared according to Mix at a volume ratio of 1:3 to obtain a mixed solution;
[0042] S2. Pour 100g of liquid paraffin into the reactor, stir mechanically for 20min, drop 30g of the mixed solution into the liquid paraffin, and mechanically stir for 30min after the addition; then add 12g of epichlorohydrin into the liquid paraffin, The reaction was carried out for 3 hours. After the reaction was c...
Embodiment 3
[0044] S1. Put 20g of the mixed aqueous solution containing 4wt% NaOH and 7wt% urea into the refrigerator to freeze to -10°C, add 1g of graphene oxide to the mixed solution, mechanically stir the obtained graphene oxide solution for 5min, add 1g of carboxylate Sodium methylcellulose was added into another 40g mixed aqueous solution containing 4wt% NaOH and 7wt% urea, mechanically stirred for 1.5h to obtain sodium carboxymethylcellulose solution, and the graphene oxide solution and sodium carboxymethylcellulose solution Mix according to the volume ratio of 1:2 to obtain a mixed solution;
[0045] S2. Pour 100g of liquid paraffin into the reactor, mechanically stir for 15min, drop 20g of the mixed solution into the liquid paraffin, and mechanically stir for 20min after the addition; then add 10g of epichlorohydrin into the liquid paraffin, The next reaction was carried out for 2 hours. After the reaction was completed, it was neutralized with 10% hydrochloric acid, the liquid pa...
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