Preparing method for polystyrene microsphere loaded nano-copper composite material

Abstract

The invention discloses a preparing method for a polystyrene microsphere loaded nano-copper composite material, belongs to the field of composite materials and aims at providing a method for preparing the polystyrene microsphere loaded nano-copper composite material through a liquid-phase reduction method. The method includes the following steps that an emulsion polymerization method is used for preparing polystyrene microspheres; then, concentrated sulfuric acid is added, even mixing is conducted, deionized water is used for dilution after a heating reaction, milk white suspending liquid is obtained, deionized water is used for washing the milk white suspending liquid till the milk white suspending liquid is neutral, and then deionized water is used for conducting ultrasonic dispersion; and then a CuSO4 solid is added for ultrasonic treatment for 1 hour, stirring is conducted while water-bath heating is conducted, a NaOH solution is added, even mixing is conducted, then a hydrazine hydrate solution is added, the reaction is continuously carried out for 0.5 h, the mixed solution is washed through distilled water and ethyl alcohol in sequence till no impurity exists in the mixed solution, and black powder is obtained through vacuum drying. The method is simple and fast, no surface active agent needs to be added, nano-copper particles on the surfaces of the polystyrene microspheres are distributed evenly, stability is high, and oxidation is not likely to happen.

Description

technical field [0001] The invention belongs to the technical field of composite materials; in particular, it relates to a preparation method of a polystyrene microsphere-loaded nano-copper composite material. Background technique [0002] Polymer microsphere is a new type of functional material, which has attracted much attention because of its wide application in biology, electronics, pharmaceuticals and many other aspects. Gradually, in order to meet more applications, researchers turned their focus to surface-functionalized polymer microspheres. The history of surface-functionalized polymer microspheres makes the surface of polymer microspheres have certain functional groups, such as carboxyl, hydroxyl, amino, vinyl, azo, etc., through self-assembly or surface modification. On the other hand, from the perspective of the structure of functionalized polymer microspheres, the preparation of polymer microspheres into nanoscale or submicron microspheres can make them have hi...

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Problems solved by technology

[0003] There are two main methods for preparing polystyrene microspheres. One is to use the existing polystyrene to prepare nanometer or submicron polystyrene microspheres through physical methods. This method is costly and requires a lot of investment. It is very complicated to obtain polystyrene microspheres with uniform and controllable size; the other is to prepare small molecular monomers by certain polymerization methods, such as suspension polymerization, emulsion polymerization, dispersion polymerization, precipitation polymerization, etc., among which suspension polymerization The prepared polystyrene microspheres have a large particle size and are not suitable as a carrier for nano-metal particles. The requirements for dispersion polymerization and precipitation polymerization are high, the cost is high, and it is not easy to control. Therefore, we use emulsion polymerization to prepare a low-cost and Submicron polystyrene microspheres with controlled particle size

[0004] At present, there is no relevant report on the preparation of polystyrene microsphere-supported nano-copper composites by liquid phase reduction method.

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