A microfluidic 3D printing composite material preparation device and method

Abstract

The invention discloses a microfluidic 3D printing composite material preparation device and method. The first multi-channel switching valve is connected to the first liquid storage tank and the first metering injection pump, and the first enhanced phase solution enters through the first multi-channel switching valve. The first metering injection pump; the first multi-channel switching valve communicates with the first metering injection pump and the second multi-channel switching valve, and the second multi-channel switching valve communicates with the first multi-channel switching valve and the second metering injection pump, the first type The enhanced phase solution enters the second multi-channel switching valve, the second metering syringe pump inhales the first enhanced phase solution, and also transfers the second enhanced phase solution from the second liquid storage tank to the second injection syringe, and the two enhanced phases The solution is mixed by the microfluidic chip and then output from the printing needle; the invention controls the size of the printed microdroplets and the uniform dispersion of the reinforcement phase through the microfluidic technology, and controls the microdroplets to completely infiltrate the matrix layer without spreading randomly. Customize the distribution and types of reinforcing phases in composite materials according to your needs.

Description

technical field [0001] The invention belongs to the field of composite material preparation, in particular to a composite material preparation device and a preparation method thereof which adopt a combination of microfluidic technology and 3D printing technology. Background technique [0002] Electronic, chemical, equipment manufacturing, aerospace and other industries have put forward higher requirements for the performance of materials. A single material can no longer meet the requirements. Although the strength of the material is improved after adding a reinforcing phase to the traditional composite material, the ductility is significant. decrease, resulting in poor comprehensive mechanical properties, thus greatly limiting the application of composite materials. According to the existing theory, the distribution characteristics of the reinforcement phase determine its reinforcement effect, and the non-uniform distribution of the reinforcement phase has a better balance o...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a microfluidic 3D printing composite material preparation device and its preparation method to solve the problems that it is difficult to realize the precise control of the non-uniform distribution of the reinforcement phase in the traditional preparation of composite materials, and the production cost is high and the process is complicated.

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