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Improve The Toughness Of 3D Printed Plastic Parts
Jul 06, 2018

Improve the toughness of 3D printed plastic parts.


With the development of thermoplastic extrusion materials and equipment technology in recent years, 3D printing has entered the field of final product application, not only the printing quality surface is getting smoother, but also in the printing of filament materials. The more you go toward composite printing, the more engineered grades that are difficult to achieve with injection molded products. Meshing customizable objects through three-dimensional (3D) printing provides great promise for personalized manufacturing that improves the adaptability, performance and comfort of the equipment and tools used in everyday life.


Robots that can build houses, running shoes for marathon runners, and NASA's upcoming spacecraft all have one thing in common: that is, the massive use of 3D printed parts. However, as the enthusiasm for 3D printing continues to grow and expands in the market, there are some drawbacks to the objects printed in this process. Now, a research team has published its latest research in the journal ACS Applied Materials & Interfaces. The paper reports that a simple modification to the original material can improve the toughness of these printed plastics.


As the 3D printing market continues to expand and become more affordable, it is looking for applications in many different areas. However, this versatility is often limited by the strength and durability of the printed components. Most printed parts are layered, which often results in weak points between layers. Therefore, the strength of the 3D printed component is not as strong as that of the existing method of directly injecting plastic into the mold. In order to obtain stronger 3D printed parts, Miko Cakmak, Bryan D. Vogt and colleagues studied whether it is possible to reinforce printed parts by changing the original material.


The researchers created a structured core-shell polymer filament in which the polycarbonate acts as a backbone to support and reinforce the 3D printed component. The olefin ionomer around the polycarbonate core improves and strengthens the bond between the printed layers of the outer casing. During the test, unlike the addition of these parts, the printed parts to which the filaments are added can withstand impact without cracking. The new filaments bring the strength of 3D printed parts closer to the strength of existing methods.