Overview
Flexible graphite paper is manufactured by compressing expanded graphite flakes into thin, cohesive sheets without binders. Its unique structure retains the intrinsic properties of graphite while offering exceptional flexibility, making it suitable for conforming to irregular surfaces. The material is chemically pure, typically containing over 99% carbon, and is free from binders or additives that could degrade performance. Unlike traditional graphite, flexible graphite paper can be easily cut, stamped, or molded into complex shapes, enabling customization for specific industrial applications. It is widely used in high-temperature and corrosive environments where conventional materials fail.
Physical and Chemical Properties
The material exhibits anisotropic thermal conductivity, with in-plane conductivity ranging from 150-400 W/m·K and through-plane conductivity of 5-20 W/m·K. Its electrical resistivity is low (approximately 8-12 μΩ·m), making it effective for EMI shielding. The layered structure provides natural lubricity, reducing friction in dynamic sealing applications. Chemically, flexible graphite is inert to most acids, alkalis, and solvents, except strong oxidizing agents like nitric acid. It maintains stability in temperatures from -200°C to 400°C in oxidizing atmospheres and up to 3000°C in inert or vacuum conditions. The material is also fire-resistant and meets ASTM D7542 standards for flammability.
Main Applications
In the automotive industry, flexible graphite paper is used for exhaust gaskets, cylinder head seals, and fuel cell components due to its resilience under thermal cycling. The electronics sector employs it as thermal interface material (TIM) for CPUs and power devices, where its compressibility ensures low thermal resistance. Industrial applications include spiral-wound gaskets for chemical processing equipment and packing for pumps/valves in corrosive fluid handling. Emerging uses include battery electrodes and heat spreaders in 5G devices. Its EMI shielding properties are leveraged in aerospace and defense electronics enclosures.
Safety and Storage
While graphite itself is non-hazardous, dust generated during machining may cause mechanical irritation to eyes and respiratory systems. NIOSH-approved dust masks and ventilation are recommended during fabrication. The material is not classified as flammable but can burn under extreme conditions. Storage requires protection from moisture (to prevent oxidation) and segregation from strong oxidizers like peroxides or chlorates. Rolls or sheets should be kept flat to prevent creasing. Shelf life is indefinite if stored properly in original packaging with desiccants.
B2B Procurement Guide
Key specifications to define include thickness (0.1-6 mm standard), density (0.7-1.3 g/cm³), and purity (99%+ carbon content). For thermal applications, request in-plane thermal conductivity data. Industrial-grade material typically has higher sulfur content (<1000 ppm) than nuclear-grade (<500 ppm). Suppliers should provide material certifications such as ISO 9001, ASTM F104, or DIN 3535 for gasket applications. Minimum order quantities (MOQs) vary from 1-10 rolls for standard grades. Lead times range from 2-6 weeks for custom die-cut parts. Consider regional suppliers to reduce logistics costs for bulk orders.
Related Manufacturers
- 主营：石墨卷材、高温石墨、碳石墨板、柔性石墨板、柔性石墨带、柔性石墨纸、石墨纸定制、超薄石墨纸、石墨纸、柔性石墨盘根、石墨复合板、聚苯保温板、高纯石墨垫片、石墨尼龙卷、电镀石墨板、高纯石墨板、钢膨胀石墨、石墨板定制、耐酸碱石墨板、包边散热石墨、铝材挤压石墨、耐腐蚀石墨板、石墨板、石墨带、石墨盘根
- 主营：高纯石墨、石墨板、石墨模具、柔性石墨、石墨棒、石墨粉、石墨乳、鳞片石墨、土状石墨、石墨管
- 主营：石墨扁带、接地线盘、石墨接地线、石墨纸、铁塔防雷接地极、光伏线路防雷带、石墨接地极、铜包钢圆钢、铜包钢接地棒、离子接地极、铜包钢扁钢
- 主营：石墨、鳞片石墨、微粉石墨、可膨胀石墨、石墨纸、石墨粉、石墨乳
- 主营：柔性石墨卷材、高水基盘根
- 主营：四氟板、密封填料、戈尔盘根、柔性接地电缆、柔性石墨复合板、油浸石棉、密封材料、四氟弹性带、泥状软填料、陶瓷纤维带、石墨接地线、高压石墨盘根、法兰滤网垫片、硅酸铝纤维绳、陶瓷纤维防火布
- 主营：缠绕垫、高温胶、石棉垫、柔性石墨纸、石墨引、隔热布、隔热带、绝缘纸、橡胶圈、黑四氟、耐火绳、圆垫片、密封带、复合带、回转轴、石墨绳、密封绳、油盘根、乙烯垫、真空泵、石墨垫、密封纸、全棉带、石棉带、氟龙板、圆编绳
- 主营：密封带、陶瓷纤维、法兰垫片、石墨纸、密封垫片、高水基盘根、混编盘根环、高压石棉板、黑四氟盘根、氟橡胶垫片、玻璃鳞片胶泥、碳纤维盘根环、三元乙丙丁腈板、金属复合板垫片
- 主营：石墨纸、润滑剂、脱模剂
- 主营：石墨模具、石墨坩锅、石墨块、柔性石墨、石墨板、石墨管、石墨环、石墨棒、石墨匣钵、石墨圈、石墨转子、石墨盒子、石墨锅、f-2石墨、阳极块、石墨浇管、碳素制品、石墨大梁、石墨轴套、迷山石墨、电池碳棒、石墨制品、模具石墨、石墨螺栓、石墨加热器
- 主营：戈尔盘根、陶瓷纤维带、四氟弹性带、石墨纸、高水基盘根、石墨接地线
- 主营：石墨纸、石墨烯散热膜、石墨烯散热片
- 主营：石墨烯、石墨板、膨胀石墨、石墨纸、高纯石墨、等静压石墨、石墨棒、石墨粉、石墨模具、石墨换热器、石墨管、石墨乳、石墨矿、石墨环、石墨设备、石墨坩埚、石墨块、石墨柱、石墨粒、石墨舟、石墨套、石墨螺丝、石墨片、增碳剂、鳞片石墨
- 主营：传送带、无纺布、保护膜、石墨纸、无痕胶、印刷机
- 主营：密封圈、耐火砖、石墨环、石墨纸、柔性纸、填料环、铜合金、景观转、石墨绳、透水砖、石墨板、铝合金、石墨块、薄铝板、景观砖、坩埚模具、亚克力棒、花纹铝板、亚克力板、铜板铜棒、铜棒铜管、不锈钢板、石墨坩埚、黏土坩埚、合金铝板