Nano hybrid multifunctional polyurethane flame-retardant material and preparation method thereof
A flame retardant material, polyurethane technology, applied in the field of nano-hybrid multifunctional polyurethane flame retardant material and its preparation, to achieve good flame retardant effect
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Embodiment 1
[0040] A method for preparing a novel nano-hybrid multifunctional polyurethane flame retardant material, comprising the following steps:
[0041] (1) Preparation of functionalized graphene and vanadium pentoxide: dry 200mg GO and 80mL SOCl 2 Under the protection of nitrogen, the reaction was carried out at 80°C in 5 mL of DMF for 16 h, and Cl-GO was obtained after purification and drying. Take 50mg of Cl-GO and 500mg of 2-naphthylamine to react in 20mL of DMF at 50°C for 12h, and obtain A-GO after purification and drying. figure 1 is the SEM image of the prepared A-GO;
[0042] (2) Add 0.01mol V 2 o 5 , 0.01mol DPA was dispersed in 50mL deionized water, APS aqueous solution was added dropwise at 5°C to react for 24h, purified and dried to obtain P-V 2 o 5 , figure 2 For the prepared P-V 2 o 5 TEM image of
[0043] (3) Preparation of double-nanometer hybrid multifunctional polyurethane composite material: 0.1mol IPDI and 0.06mol PLA-1000 were added to a 250mL four-nec...
Embodiment 2
[0046] A method for preparing a novel nano-hybrid multifunctional polyurethane flame retardant material, comprising the following steps:
[0047] (1) Preparation of functionalized graphene and vanadium pentoxide: dry 100mg GO and 40mL SOCl 2 Under the protection of nitrogen, react in 3 mL DMF at 70 °C for 24 h, and obtain Cl-GO after purification and drying. Take 50mg of Cl-GO and 500mg of cyclohexylamine to react in 20mL of DMF at 80°C for 6h, then purify and dry to obtain A-GO;
[0048] (2) Add 0.01mol V 2 o 5 , 0.015mol DPA was dispersed in 50mL deionized water, APS aqueous solution was added dropwise at 30°C for 4 hours, purified and dried to obtain P-V 2 o 5 ;
[0049] (3) Preparation of double nano-hybrid multifunctional polyurethane composite material: 0.1mol HDI, 0.08mol PCL-1000 were added to a 250mL four-necked flask under N 2 Vacuum drying at 120°C under protection for 2h, dropwise adding diethylenetriamine and reacting at 60°C for 4h; cooling to 50°C, adding ...
Embodiment 3
[0052] (1) Preparation of functionalized graphene and vanadium pentoxide: dry 150mg GO and 60mL SOCl 2 Under the protection of nitrogen, the reaction was carried out in 4 mL of DMF at 90 °C for 12 h, and Cl-GO was obtained after purification and drying. Take 80mg of Cl-GO and 1000mg of dodecylamine to react in 30mL of DMF at 70°C for 10h, and obtain A-GO after purification and drying;
[0053] (2) Add 0.01mol V 2 o 5 , 0.02mol DPA was dispersed in 50mL deionized water, APS aqueous solution was added dropwise at 10°C to react for 16h, purified and dried to obtain P-V 2 o 5 ;
[0054] (3) Preparation of double-nanometer hybrid multifunctional polyurethane composite material: 0.1mol MDI and 0.05mol PLA-2000 were added to a 250mL four-necked flask and placed under N 2 Vacuum drying at 120°C under protection for 2 hours, adding stannous octoate dropwise and reacting at 90°C for 2 hours; cooling to 50°C, adding 0.015mol glycerol, heating to 70°C and reacting for 3 hours to obta...
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