Graphene oxide-based self-repairing flame-retardant composite film, preparation thereof and fire alarm
A fire-retardant composite, alkenyl-based technology, applied in the direction of electrical fire alarms, carbon compounds, chemical instruments and methods, etc., can solve the problems of long response time, poor conductivity and short service life of fire alarms
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Embodiment 1
[0034] The embodiment of the present application provides the first graphene oxide-based self-healing flame-retardant composite film and the first temperature detector, and the specific steps are as follows:
[0035] 1. Select graphene oxide and 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) with a mass ratio of 5:1 and ultrasonically disperse them in tetrahydrofuran to obtain graphene oxide solution and DOPO solution, at 70°C, pass nitrogen or argon as a protective gas, mix graphene oxide solution and DOPO solution for partial reduction, and the reaction time is 14h to obtain modified graphene oxide.
[0036] 2. Select the modified graphene oxide and carbon nanotubes with a mass ratio of 40:1, and disperse them in the aqueous solution respectively. After mixing, they are suction-filtered to form a film to prepare a graphene oxide-based composite film.
[0037] 3. Preparation of polyborosiloxane resin: react boric acid with hydroxyl-terminated polydimethylsiloxane, ...
Embodiment 2
[0040] The embodiment of the present application provides the second graphene oxide-based self-healing flame-retardant composite film and the second fire alarm, and the specific steps are as follows:
[0041] 1. Select graphene oxide and polydopamine (PDA) with a mass ratio of 10:1 and ultrasonically disperse them in DMSO respectively to obtain graphene oxide solution and PDA solution. The graphene oxide solution and the PDA solution were mixed for partial reduction, and the reaction time was 10 h to obtain the modified graphene oxide.
[0042] 2. Select the modified graphene oxide and Mxene with a mass ratio of 10:1, and disperse them in the aqueous solution respectively. After mixing, they are suction-filtered to form a film to prepare a graphene oxide-based composite film.
[0043] 3. Preparation of polyborosiloxane resin: react boric acid with hydroxyl-terminated polydimethylsiloxane, react for two hours at room temperature, and then wash to obtain polyborosiloxane resin; ...
Embodiment 3
[0046] The embodiment of the present application provides the third graphene oxide-based self-healing flame-retardant composite film and the third fire alarm, and the specific steps are as follows:
[0047] 1. Select graphene oxide and polyethyleneimine (PEI) with a mass ratio of 3:1 and ultrasonically disperse them in DMF respectively to obtain graphene oxide solution and PEI solution. At 100°C, pass nitrogen or argon as protection gas, the graphene oxide solution and the PEI solution were mixed for partial reduction, and the reaction time was 12 hours to obtain modified graphene oxide.
[0048] 2. Select modified graphene oxide and graphene with a mass ratio of 30:1, and disperse them in aqueous solution respectively, and after mixing, suction filter to form a film to prepare a graphene oxide-based composite film.
[0049] 3. Preparation of polyborosiloxane resin: react boric acid with hydroxyl-terminated polydimethylsiloxane, react for two hours at room temperature, and the...
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