Direct observation of electrostatic charging in 3D printing

Area of Science:

• Materials Science
• Electrostatics
• Polymer Chemistry

Background:

• Spontaneous surface electrification is a known phenomenon impacting chemical reactivity and charge transfer.
• Fused deposition modeling (3D printing) is susceptible to various electrification mechanisms, leading to charged printed objects.

Purpose of the Study:

• To investigate the unexplored area of electrostatic charging in 3D printing.
• To understand how printing parameters affect charge generation in polymers.
• To explore methods for charge monitoring, control, and potential applications in electret technology.

Main Methods:

• Investigated the impact of substrates, printing speed, temperature, and printing direction on charge buildup in 3D printed polymers.
• Developed protocols using multimeters for charge monitoring.
• Utilized corona charging and triboelectrification for charge control and mitigation.

Main Results:

• Printing parameters significantly influence electrostatic charge generation in polymers during 3D printing.
• Effective methods for monitoring and controlling electrostatic charges were demonstrated.
• Successful printing of quasi-electrets was achieved, indicating novel applications.

Conclusions:

• 3D printing parameters critically affect polymer electrification.
• The study provides foundational insights into electrostatic phenomena in 3D printing.
• The development of quasi-electrets opens new avenues for electret technology and materials science.