Device for coating powder with polydopamine

Abstract

The invention discloses a device for coating a powder with polydopamine. The device comprises a powder storage box, a first feeder, a reactor, a dopamine storage box, a second feeder, a water peristaltic pump, a water tank, an alkali liquor peristaltic pump, an alkali liquor tank, an acid solution peristaltic pump, an acid solution tank, a stirring pump, stirring rods, a light source, a first pH monitor, a second pH monitor, a third pH monitor, a valve, a plate and frame filter press and a control panel. The first pH monitor, the second pH monitor and the third pH monitor are respectively arranged the right middle end, the lower left end and the lower right end of the reactor, the light source is arranged at the top of the reactor, the valve is arranged at the bottom of the reactor, and the outlet of the valve is communicated with the feed inlet of the plate and frame filter press. The device has the advantages of completely closed production process, avoiding of dusts from escaping, high automation, realization of control of the temperature, the light source, the pH value and other conditions affecting a reaction, simplification of the production process, energy consumption saving, and reduction of the production cost.

Description

technical field [0001] The invention relates to a polydopamine-coated powder device. Background technique [0002] Polydopamine (PDA) is an adhesive polymer that can surface functionalize almost all chemical materials. As an environmentally friendly reagent, PDA can tightly adhere to the surface of various substrates through the autoxidative polymerization of DA. The reaction is fast and convenient, the conditions are mild, and no additional reducing agents and surface modifiers are needed; it is non-toxic and has good biocompatibility. ; The product is easy to disperse, hydrophilic and stable. The application range of polydopamine modified materials is getting wider and wider. However, the reaction process of dopamine-coated powder is affected by factors such as temperature, material ratio, light source, and pH. How to efficiently coat polydopamine on the surface of the powder is a difficult problem. For example, the optimal polymerization pH is 8.5. If pH buffer is added...

AI Technical Summary

Problems solved by technology

However, the reaction process of dopamine-coated powder is affected by factors such as temperature, material ratio, light source, and pH. How to efficiently coat polydopamine on the surface of the powder is a difficult problem. For example, the optimal polymerization pH is 8.5. If pH buffer is added The cost is too high, so there is currently a lack of corresponding special preparation equipment

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