Nano Graphite Powder (1250 Mesh)

• CAS: 7782-42-5
• Catalog Number: ALC-FP-7782425
• Category: Featured Products
• Appearance: Solid
• Content: Li:0.0001%; K:0.0109%; Ca:0.0132%; Na:0.0170%; Zn:0.0150%; Cd:0.0001%; Fe:0.0066%; Sn:0.00001%; Cr:0.0191%; Ni:0.0001%
• Sample Lot No.: A24M0312x1563

Case Study

Nano Graphite Powder for Thermal Enhancement in EPDM/Paraffin Wax Phase Change Composites

Alvar MZ, et al. Journal of Energy Storage, 2022, 52, 105065.

This study employed nano graphite powder to enhance thermal conductivity and shape stability of EPDM/paraffin wax (PW) phase change material (PCM) composites. EPDM rubber was first mixed with 5 phr benzoyl peroxide using a two-roll mill at 10 rpm for 10 min. Nano graphite powder (5-30 wt%) was gradually incorporated and mixed for 20 min to ensure uniform dispersion. The mixtures were vulcanized via hot pressing at 160 °C for 15 min in cylindrical molds (45 mm × 3 mm). Composites were then impregnated in molten PW at 120 °C for 24 h. Increasing graphite content reduced EPDM crosslinking, enhancing swelling and PW retention, while 20 wt% graphite increased thermal conductivity by 120 %. The optimized EWG24 composite (72.5 wt% PW) showed <1 % leakage, highest phase change enthalpy, 45 % thermal efficiency improvement, and 60 % longer performance time compared to graphite-free systems. This work demonstrates nano graphite powder as an effective additive for thermal energy storage applications.

Graphite Powder for Enhancing Machining Performance of Aluminum Matrix Composites via Powder Metallurgy and EDM

Islam M, et al. Materials Today: Proceedings, 2022.

In this study, graphite powder was incorporated into aluminum matrix composites (AMCs) using the powder metallurgy (P/M) technique to evaluate its effect on machining performance via electrical discharge machining (EDM). Pure aluminum powders were blended with varying amounts of graphite (3%, 5%, 7%) and silicon carbide (5%, 10%, 15%) nano-powders. The powders were compacted under loads of 150, 200, and 250 kN and sintered at 500, 550, and 600 °C. EDM parameters, including current, pulse on time (Ton), pulse off time (Toff), and voltage, were systematically varied following a Taguchi L9 orthogonal array. Results demonstrated that graphite particulates effectively enhanced metal removal rate (MRR), surface roughness (Ra), and hardness of the composites, while the addition of SiC increased hardness but reduced MRR. The experimental workflow highlights graphite powder's role as a solid lubricant and performance enhancer in high-precision machining of AMCs.