Microfluidic 3D printing composite material preparation device and method

Abstract

The invention discloses a microfluidic 3D printing composite material preparation device and method. A first multi-channel switching valve communicates a first liquid storage tank with a first metering injection pump, and a first reinforced phase solution enters the first metering injection pump through the first multi-channel switching valve; the first multi-channel switching valve communicates the first metering injection pump with a second multi-channel switching valve, and the second multi-channel switching valve communicates the first multi-channel switching valve with a second metering injection pump, so that the first reinforced phase solution enters the second multi-channel switching valve; the second metering injection pump sucks the first reinforced phase solution; and similarly, a second reinforced phase solution is transferred from a second liquid storage tank to a second injection needle cylinder, and the two reinforced phase solutions are mixed and output through a microfluidic chip. According to the invention, the size of the printing droplets and the uniform dispersion of the reinforced phase are controlled through the microfluidic technology, the droplets are controlled to be completely infiltrated on the matrix layer but not randomly dispersed, and the distribution and variety of the reinforced phases in the composite material can be customized as required.

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 using a combination of microfluidic technology and 3D printing technology. Background technique [0002] Industries such as electronics, chemical industry, equipment manufacturing and aerospace put forward higher requirements on the performance of materials. A single material can no longer meet the demand. Although the traditional composite material is added with a reinforcing phase, the strength of the material is improved, but the ductility is significant. Reduced, leading to 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 of strength and ...

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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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