Preparation method of silane-modified graphene, sheet metal parts, air conditioner outdoor unit and air conditioner
A technology for silane modification and sheet metal parts, which can be used in air conditioning systems, space heating and ventilation, heating methods, etc. It can solve the problems of poor corrosion resistance, reduce hydrophilicity, improve corrosion resistance, and enhance cathodic protection effect of ability
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[0039] The invention provides a preparation method of silane-modified graphene. Wherein, the preparation method adopts a one-pot method (carried out in a one-pot reaction furnace) to prepare silane-modified graphene, and the preparation process is simple and can be mass-produced.
[0040] Specifically, the preparation method of the silane-modified graphene that the present invention proposes comprises the following steps:
[0041] Add graphene oxide and solvent in the reactor;
[0042] Stir at room temperature for 12h-36h, ultrasonically oscillate for 30min-60min;
[0043] Add silane coupling agent in the reactor;
[0044] Raise the temperature to 50°C-200°C, stir and react for 12h-36h, wait until the mixture gradually changes from golden brown to dark brown, and stop the reaction.
[0045] In the embodiment of the present invention, the concentration of the graphene oxide is 0.2g / L-3g / L, and the weight ratio of the silane coupling agent to the graphene oxide is 1%-12%.
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Embodiment 1
[0061] This embodiment provides a sheet metal part 100, including a metal plate 110, an anti-corrosion coating 130 and a silane-modified graphene coating 120, the anti-corrosion coating 130 is arranged on the metal plate 110; The modified graphene coating is sandwiched between the metal plate 110 and the anti-corrosion coating 130 .
[0062] In this embodiment, the preparation method of the silane-modified graphene: in a 1000ml flask, add 0.2g graphene oxide powder and 1L solvent (the concentration of graphene oxide is 0.2g / L), wherein the solvent Including xylene, butanol and benzyl alcohol, the volume ratio of the three is 3:0.8:0.2; magnetically stir the mixed solution for 24 hours, add water bath ultrasonic oscillation for 40 minutes (ultrasonic oscillation frequency is 37Hz, ultrasonic oscillation power is 50%), make graphite oxide Graphene powder is fully dispersed in the solvent, shaking the reaction bottle, no particles or flocculent aggregates can be observed with the...
Embodiment 2
[0064] This embodiment provides a sheet metal part 100, including a metal plate 110, an anti-corrosion coating 130 and a silane-modified graphene coating 120, the anti-corrosion coating 130 is arranged on the metal plate 110; The modified graphene coating is sandwiched between the metal plate 110 and the anti-corrosion coating 130 .
[0065] In this embodiment, the preparation method of the silane-modified graphene: in a 1000ml flask, add 0.8g graphene oxide powder and 1L solvent (the concentration of graphene oxide is 0.8g / L), wherein the solvent Including xylene, butanol and benzyl alcohol, the volume ratio of the three is 3:0.8:0.2; magnetically stir the mixed solution for 24 hours, add water bath ultrasonic oscillation for 40 minutes (ultrasonic oscillation frequency is 37Hz, ultrasonic oscillation power is 50%), make graphite oxide Graphene powder is fully dispersed in the solvent, shaking the reaction bottle, no particles or flocculent aggregates can be observed with the...
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