Graphite Particle Reduction Process using High Energy Milling

Abstract

Graphite is a material that has excellent mechanical and thermal properties, as well as a wide application level, especially in the form of nanoparticles. High Energy Milling (HEM) is one of the methods used in the formation of nanoparticles by reducing particle size mechanically. In this research, variation of ball mill ratio to number of graphite in milling (2 : 1, 3 : 1 and 4 : 1) and milling time (1, 2, 3 and 4 hours), with rotation speed 750 rpm, to obtain graphite nanoparticles the optimum. Ball mill comparison to the amount of graphite in the process of milling, done by controlling the amount of graphite as much as 5.28 grams. The graphite nanoparticles formed through the HEM process have particle sizes ranging from 403 to 58 nm. Graphite particle size with increasing time and ratio ball mill: graphite, smaller, except on variation of ratio ball mill : graphite, 2 : 1, with 4 hour milling time, this is supported by SEM data showing the change of graphite particles shape into flakes, so the particle diameter measurable increase.

Nano Porous Zinc Synthesis on Soft Polyurethane Foam Using Conductive Ink and Electroplating Method

“…Hence, the icebreaker program is used at the mixer mill apparatus, which crushes the graphite particles with high power and a sharp stainless-steel blade, so that aggregation does not happen. With regards to the effect of crushing time on the specific surface of graphite powder (Figure 1), increasing the specific surface area confirms previous reports [30][31][32][33][34].…”

“…Figure 1 represents the effect of crushing time on graphite particle size. As reported in other works [31,32] grinding graphite has reduced the size of graphite; on the contrary, in some studies, the particles have agglomerated, and the size has increased during the milling process [33]. This difference is due to the fact that ball mills make an agglomeration of graphite particles [34] that can be reduced by using the shear mills [35].…”

Biopolymer Composites Material Extrusion and their Applications: A Review

“…[97][98][99] In one method, bulk materials are ground into powders to nanometer range sizes using a high milling speed. [100,101] The milling balls continue to roll in the chamber to break particles into smaller sizes, and the milling speed, lubricant solvent, and milling temperature greatly influence the dimensions of the micro-and even nanopowder. [102,103] Besides mechanical milling, ultrasonication can be used to further reduce the powder's size.…”