Method for preparing antifouling anti-corrosion functional microcapsule based on Pickering emulsion

Abstract

The invention designs a method for preparing an antifouling anti-corrosion functional microcapsule based on a Pickering emulsion, and belongs to the technical field of materials. The method is characterized in that the microcapsule is prepared by combining the Pickering emulsion and a solvent evaporation process; the surface of the microcapsule is modified by a chemical reaction between an antifouling agent and nanoparticles to allow the microcapsule to have antifouling and anti-corrosion functions; and the microcapsule can be widely applied in self-repairing coatings in the marine field. In addition, the method can be further developed to prepare different multifunctional microcapsules, and has a potential application prospect in the fields of food, cosmetics, and medicine.

Description

technical field

[0001] The invention relates to a method for preparing antifouling and anticorrosion functional microcapsules based on Pickering emulsion, which belongs to the field of material technology. Background technique

[0002] The development of the national marine economy has promoted the construction of a large number of marine infrastructures, but the losses caused by marine corrosion cannot be underestimated. According to the survey of major consulting projects of the Chinese Academy of Engineering, in 2014, my country's marine corrosion loss reached 700 billion yuan. The vigorous development of seaports, bridges, tunnels and coastal engineering urgently needs the escort of marine protective materials. Seawater with strong conductivity is the main cause of severe marine corrosion, and microbial corrosion and subsequent fouling behavior is another major cause of marine engineering material damage.

[0003] In recent years, research on self-repairing and anti-co...

Examples

Embodiment 1

[0027] Mix dichloromethane (solvent), polysulfone (wall material) and anti-rust oil (core material) at a mass ratio of 20:1:2, and mix them mechanically for 10 minutes to prepare an oil phase; the mass fraction is 3% The aqueous solution of Ludox TMA is used as the water phase; the oil phase and the water phase are mixed at a volume ratio of 1:10, and ultrasonic treatment is used. The ultrasonic treatment condition is to use an ultrasonic homogenizer to treat the sample under the protection of an ice-water mixed bath. The diameter of the probe used is 6.4mm, the effective ultrasonic time is 5min, the ultrasonic mode is 10s on, 5s off, making Pickering emulsion, figure 1 a is the microscope picture of its Pickering emulsion;

[0028] Take 20 g of the aforementioned Pickering emulsion and place it in a beaker, mechanically stir at 35°C for 6 hours until the organic solvent methylene chloride is completely volatilized, then leave the solution to stand to obtain microcapsules load...

Embodiment 2

[0031] Mix dichloromethane (solvent), polysulfone (wall material) and anti-rust oil (core material) at a mass ratio of 20:1:2, and mix them mechanically for 10 minutes to prepare an oil phase; the mass fraction is 3% The aqueous solution of Ludox TMA is used as the water phase; the oil phase and the water phase are mixed at a volume ratio of 2:10, and ultrasonic treatment is used. The ultrasonic treatment condition is to use an ultrasonic homogenizer to treat the sample under the protection of an ice-water mixed bath. The diameter of the probe used is 6.4mm, the effective ultrasonic time is 5min, the ultrasonic mode is 10s on, 5s off, making Pickering emulsion, figure 1 b is the microscope picture of its Pickering emulsion;

[0032] Take 20 g of the aforementioned Pickering emulsion and place it in a beaker, mechanically stir at 35°C for 6 hours until the organic solvent methylene chloride is completely volatilized, then leave the solution to stand to obtain microcapsules load...

Embodiment 3

[0035] Mix dichloromethane (solvent), polysulfone (wall material) and anti-rust oil (core material) at a mass ratio of 20:1:2, and mix them mechanically for 10 minutes to prepare an oil phase; the mass fraction is 3% The aqueous solution of Ludox TMA is used as the water phase; the oil phase and the water phase are mixed at a volume ratio of 3:10, and ultrasonic treatment is used. The ultrasonic treatment condition is to use an ultrasonic homogenizer to treat the sample under the protection of an ice-water mixed bath. The diameter of the probe used is 6.4mm, the effective ultrasonic time is 5min, the ultrasonic mode is 10s on, 5s off, making Pickering emulsion, figure 1 c is the micrograph of the Pickering emulsion;

[0036] Take 20 g of the aforementioned Pickering emulsion and place it in a beaker, mechanically stir at 35°C for 6 hours until the organic solvent methylene chloride is completely volatilized, then leave the solution to stand to obtain microcapsules loaded with ...

technical field

[0001] The invention relates to a method for preparing antifouling and anticorrosion functional microcapsules based on Pickering emulsion, which belongs to the field of material technology. Background technique

[0002] The development of the national marine economy has promoted the construction of a large number of marine infrastructures, but the losses caused by marine corrosion cannot be underestimated. According to the survey of major consulting projects of the Chinese Academy of Engineering, in 2014, my country's marine corrosion loss reached 700 billion yuan. The vigorous development of seaports, bridges, tunnels and coastal engineering urgently needs the escort of marine protective materials. Seawater with strong conductivity is the main cause of severe marine corrosion, and microbial corrosion and subsequent fouling behavior is another major cause of marine engineering material damage.

[0003] In recent years, research on self-repairing and anti-co...

Examples

Embodiment 1

[0027] Mix dichloromethane (solvent), polysulfone (wall material) and anti-rust oil (core material) at a mass ratio of 20:1:2, and mix them mechanically for 10 minutes to prepare an oil phase; the mass fraction is 3% The aqueous solution of Ludox TMA is used as the water phase; the oil phase and the water phase are mixed at a volume ratio of 1:10, and ultrasonic treatment is used. The ultrasonic treatment condition is to use an ultrasonic homogenizer to treat the sample under the protection of an ice-water mixed bath. The diameter of the probe used is 6.4mm, the effective ultrasonic time is 5min, the ultrasonic mode is 10s on, 5s off, making Pickering emulsion, figure 1 a is the microscope picture of its Pickering emulsion;

[0028] Take 20 g of the aforementioned Pickering emulsion and place it in a beaker, mechanically stir at 35°C for 6 hours until the organic solvent methylene chloride is completely volatilized, then leave the solution to stand to obtain microcapsules load...

Embodiment 2

[0031] Mix dichloromethane (solvent), polysulfone (wall material) and anti-rust oil (core material) at a mass ratio of 20:1:2, and mix them mechanically for 10 minutes to prepare an oil phase; the mass fraction is 3% The aqueous solution of Ludox TMA is used as the water phase; the oil phase and the water phase are mixed at a volume ratio of 2:10, and ultrasonic treatment is used. The ultrasonic treatment condition is to use an ultrasonic homogenizer to treat the sample under the protection of an ice-water mixed bath. The diameter of the probe used is 6.4mm, the effective ultrasonic time is 5min, the ultrasonic mode is 10s on, 5s off, making Pickering emulsion, figure 1 b is the microscope picture of its Pickering emulsion;

[0032] Take 20 g of the aforementioned Pickering emulsion and place it in a beaker, mechanically stir at 35°C for 6 hours until the organic solvent methylene chloride is completely volatilized, then leave the solution to stand to obtain microcapsules load...

Embodiment 3

[0035] Mix dichloromethane (solvent), polysulfone (wall material) and anti-rust oil (core material) at a mass ratio of 20:1:2, and mix them mechanically for 10 minutes to prepare an oil phase; the mass fraction is 3% The aqueous solution of Ludox TMA is used as the water phase; the oil phase and the water phase are mixed at a volume ratio of 3:10, and ultrasonic treatment is used. The ultrasonic treatment condition is to use an ultrasonic homogenizer to treat the sample under the protection of an ice-water mixed bath. The diameter of the probe used is 6.4mm, the effective ultrasonic time is 5min, the ultrasonic mode is 10s on, 5s off, making Pickering emulsion, figure 1 c is the micrograph of the Pickering emulsion;

[0036] Take 20 g of the aforementioned Pickering emulsion and place it in a beaker, mechanically stir at 35°C for 6 hours until the organic solvent methylene chloride is completely volatilized, then leave the solution to stand to obtain microcapsules loaded with ...

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