Graphite Micropowder

1. Product Core

Graphite Micropowder is an ultrafine graphite powder material prepared from high-purity natural graphite or artificial graphite through precision processes such as crushing, grading, and purification. Its core value lies in maximizing the advantages of graphite's layered crystal structure through micro particle size optimization, which combines excellent conductivity, lubricity, high temperature resistance, and chemical stability, and can meet the demand for "refinement and functionalization" of powder materials in high-end industrial fields.

2. Core Features of the Product

2.1 Ultra-fine Particle Size and Uniform Distribution

The average particle size (D50) can be controlled within 1-10 μm (customizable to 100nm-5 μm ultrafine specifications), with a small particle size distribution span (Span ≤ 0.8), no agglomeration phenomenon, and easy to uniformly disperse in the matrix, ensuring consistent performance of the end product.

2.2 High Purity and Low Impurities

Graphite Micropowder has a fixed carbon content of ≥ 99.5% (with high-end specifications featuring a fixed carbon content of ≥ 99.95%) and an ash content of ≤ 0.5% (with ultrafine specifications featuring an ash content of ≤ 0.1%). It is free of harmful impurities such as sulfur and phosphorus, so as to avoid pollution to application scenarios or performance interference with them.2.3 Excellent Physical and Chemical Properties

Conductivity: Volume resistivity ≤ 10 Ω·cm, can be used as a conductive filler to enhance material conductivity;

Lubrication: Mohs hardness 1-2, friction coefficient ≤ 0.15, can replace metal lubricants in oil-free lubrication scenarios;

High temperature resistance: Can withstand temperatures above 3000 ℃ in inert gas, does not melt or oxidize, and has a low coefficient of thermal expansion (2-5 × 10⁻⁶/℃);

Chemical stability: Resistant to acid, alkali, and organic solvent corrosion, stable in pH 2-12 environment, and does not react with most chemical substances.

2.4 Good Processing Adaptability

The powder has good flowability (angle of repose ≤ 35°), is easy to mix with substrates such as resin, rubber, metal powder, etc., and does not damage the original structure of the substrate. It can be processed diversely through processes such as compression molding, injection molding, and coating.

 

 

3. Main Application Areas

3.1 Lubrication Industry

As a dry lubricant added to mechanical components such as bearings, gears, valves;

To prepare solid lubricating coatings (e.g., lubrication for wind power equipment, aerospace components);

Used as a lubricating oil/grease additive to improve lubrication life and adaptability to extreme working conditions.

3.2 New Energy Sector

Lithium battery negative electrode conductive agent: Improves the conductivity of negative electrode materials (e.g., graphite, silicon-based materials), reduces battery internal resistance, enhances charge-discharge efficiency and cycle life;

Fuel cell bipolar plate coating: Enhances the conductivity and corrosion resistance of bipolar plates, reduces contact resistance.

3.3 Coatings and Ink Industry

Conductive coatings: Used for anti-static flooring, electromagnetic shielding coatings, electronic component shell coatings;

High temperature resistant coating: Used for coating the inner walls of boilers and kilns to enhance high temperature resistance and wear resistance;

Special ink: Prepares conductive ink (e.g., flexible electronic circuits, RFID tags) to ensure stable conductivity after ink printing.

3.4 Metallurgy and Refractory Materials

Metallurgical protective slag: Forms a liquid slag film during continuous casting, isolates air, lubricates the billet, and reduces surface defects;

Refractory bricks/refractory coatings: Improves the high temperature resistance and thermal shock resistance of refractory materials, used in high-temperature equipment such as steel and glass kilns.

3.5 Electronics and Precision Manufacturing

Electronic packaging materials: Added as thermal/conductive fillers to epoxy resin packaging agents to improve chip heat dissipation efficiency;

Precision polishing: Used for fine polishing of semiconductor silicon wafers and optical glass, reducing surface roughness (up to Ra ≤ 0.01 μm).

4. Key Technical Parameters

Hot Tags: graphite micropowder, China graphite micropowder manufacturers, Graphite Powder for Sealing Materials, High Purity Micronized Graphite Powder, micronized graphite, Micronized Graphite Powder, Ultrafine Graphite Powder