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Graphite Ethylene Plate

Updated: 2026-08-01

Overview

Graphite ethylene board is a high-performance composite material made by dispersing graphite flakes within an ethylene-based polymer matrix. It combines the thermal and electrical conductivity of graphite with the flexibility and chemical resistance of ethylene polymers. This material is engineered for applications requiring durability under extreme conditions, such as high temperatures or corrosive environments. Its unique properties make it a versatile solution across industries, including automotive, aerospace, and chemical processing. The material is typically manufactured in sheets or rolls, allowing for easy customization to meet specific design requirements. Its black appearance and smooth surface are characteristic of its graphite content.

Physical and Chemical Properties

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Graphite ethylene board exhibits exceptional thermal conductivity, often ranging between 5-20 W/m·K, depending on the graphite content. This property makes it ideal for heat dissipation applications. The material is also chemically inert, resisting acids, alkalis, and solvents, which ensures longevity in harsh environments. Its flexibility and tensile strength allow it to conform to irregular surfaces, making it suitable for gaskets and seals. The material is lightweight, with a density slightly higher than pure ethylene polymers due to the graphite filler. It maintains stability across a broad temperature range, typically from -50°C to 200°C, without significant degradation.

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Main Applications

In the automotive industry, graphite ethylene board is used for gaskets and thermal management systems, where it helps dissipate heat from engines and electronic components. Its chemical resistance makes it a preferred material for seals in pumps and valves within the chemical processing sector. The aerospace industry utilizes this material for its lightweight and thermal properties, particularly in avionics cooling systems. Additionally, it serves as a barrier material in fuel cells and batteries, preventing leakage while ensuring electrical conductivity. Its flexibility also allows for use in flexible heating elements and anti-static packaging.

Safety and Storage

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While graphite ethylene board is generally safe to handle, precautions should be taken during machining or cutting to avoid inhalation of graphite particles. Use of dust extraction systems and personal protective equipment (PPE) such as masks and gloves is recommended. Storage conditions should prioritize cool, dry environments to prevent degradation of the ethylene matrix. The material should be kept away from strong oxidizers and direct sunlight, which could accelerate aging. Proper stacking and support are necessary to avoid deformation during long-term storage.

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B2B Procurement Guide

When procuring graphite ethylene board, specify key parameters such as thickness (commonly 0.5-5 mm), graphite content (typically 20-50%), and any required certifications (e.g., FDA for food-grade applications). Suppliers may offer custom die-cutting or laminating services for large orders. Quality assurance is critical; request material data sheets (MDS) and test reports for thermal and chemical resistance. Lead times can vary, especially for customized products, so plan procurement accordingly. Bulk purchases often attract discounts, but ensure storage capabilities align with material requirements to avoid waste.

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