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Break through! 3D nanometer ink breaks the bottleneck

Release Time:

2022-09-20 14:25

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After plasma etching of the polymer, the electron microscope shows the arrangement of the nanomaterials in the 3D printing direction.

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3D printed "dog bone" nanocomposite tensile test samples.

A new type of 3D printable polymer nanocomposite ink has incredible properties and has been widely used in aerospace, medicine and electronic fields.

Mechanical engineering researchers at Michigan Institute of Technology have invented a method of using carbon nanotubes (CNTs) to make 3D printing nanocomposite polymer ink, which is expected to replace traditional epoxy resin.

Parisa Pour Shahid Saeed Abadi, an engineer who studies materials, mechanics, and medical interfaces, and Masoud kasrae, a graduate student, recently published an article in the journal "enhanced Manufacturing" and pointed out that this material goes beyond the scientific category of nanocomposite inks and has great prospects.

The conductivity of the new nanomaterial ink makes it possible for printed epoxy resin to be used as a wire at the same time-whether on a circuit board, on an aircraft wing, or on a 3D print driver used to guide vascular catheters. Another useful property of nanocomposite polymer inks is its strength. "compared with steel and aluminum, we found that epoxy composites with the same strength can reduce the weight by 80%." Kasrae said.

In addition, in the medical, aerospace and electronics industries, defects and damage can cause major trouble, while nanocomposites can perform safety functions. "when something breaks, a tiny crack starts with a tiny defect and develops to destroy the entire structure." "Nanocomposites can bridge these cracks without expanding them," Abadi said. This is one of the mechanisms by which carbon nanotubes improve the mechanical strength of materials. "

In the future, polymer nanocomposite ink is expected to replace the traditional epoxy resin. The authors say that performance, weight ratio, electrical conductivity, improved strength and ease of use are just a few of the reasons.

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