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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

Active Publication Date: 2022-02-11
GD MIDEA AIR-CONDITIONING EQUIP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The main purpose of the present invention is to propose a preparation method of silane-modified graphene, which aims to solve the technical problem of poor corrosion resistance of existing sheet metal parts in heavy corrosion environments

Method used

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  • Preparation method of silane-modified graphene, sheet metal parts, air conditioner outdoor unit and air conditioner
  • Preparation method of silane-modified graphene, sheet metal parts, air conditioner outdoor unit and air conditioner
  • Preparation method of silane-modified graphene, sheet metal parts, air conditioner outdoor unit and air conditioner

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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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Abstract

The invention discloses a preparation method of silane-modified graphene, a sheet metal part, an air conditioner outdoor unit, and an air conditioner, wherein the preparation method of the silane-modified graphene comprises the following steps: adding graphene oxide and Solvent; stir at room temperature for 12h-36h, ultrasonically oscillate for 30min-60min; add silane coupling agent to the reactor; heat up to 50°C-200°C, stir for 12h-36h, until the mixture gradually turns from golden brown to black Brown, no reaction. The silane-modified graphene prepared by the invention can effectively improve the anti-corrosion performance of sheet metal parts in heavy corrosion environments.

Description

technical field [0001] The invention relates to the technical field of air conditioners, in particular to a preparation method of silane-modified graphene, sheet metal parts, air conditioner outdoor units and air conditioners. Background technique [0002] The casing of the outdoor unit of the air conditioner is usually prepared from a sheet metal part, which is made of polyester powder electrostatically adsorbed on a galvanized steel sheet. However, the anti-corrosion performance of this sheet metal part is poor in a heavily corrosive environment, and problems such as rust, perforation, and peeling off of the anti-corrosion coating will occur within a few years or even a few months, which seriously affects the appearance and quality of the outdoor unit of the air conditioner. The structural stability increases the risk of the outdoor unit of the external air conditioner falling, which poses a serious safety hazard. [0003] The above content is only used to assist in under...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/00C09D5/08F24F1/56F24F13/20
CPCC09D1/00C09D5/08F24F1/56F24F13/20
Inventor 曾德森
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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