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    • 68. 发明申请
    • Chemically functionalized submicron graphitic fibrils, methods for producing same and compositions containing same
    • 化学官能化的亚微米石墨原纤维,其制备方法和含有它们的组合物
    • US20110133132A1
    • 2011-06-09
    • US12804190
    • 2010-07-16
    • Aruna ZhamuBor Z. Jang
    • Aruna ZhamuBor Z. Jang
    • H01B1/24C01B31/02B32B5/16C12N11/14D01F9/12C07C51/00C01B31/26C07C209/00C07C67/00C07C29/00C07C231/00
    • D01F9/12B82Y30/00B82Y40/00C01B32/16C01B32/174D01D5/423H01G11/38Y02E60/13Y10T428/25Y10T428/2918
    • The present invention provides a chemically functionalized submicron graphitic fibril having a diameter or thickness less than 1 μm, wherein the fibril is free of continuous thermal carbon overcoat, free of continuous hollow core, and free of catalyst. The fibril is obtained by splitting a micron-scaled carbon fiber or graphite fiber along the fiber axis direction. These functionalized graphitic fibrils exhibit exceptionally high electrical conductivity, high thermal conductivity, high elastic modulus, high strength and good interfacial bonding with a matrix resin in a composite. The present invention also provides several products that contain submicron graphitic fibrils: (a) paper, thin-film, mat, and web products; (b) rubber or tire products; (c) energy conversion or storage devices, such as fuel cells, lithium-ion batteries, and supercapacitors; (d) adhesives, inks, coatings, paints, lubricants, and grease products; (e) heavy metal ion scavenger; (f) absorbent (e.g., to recover spill oil); (g) sensors; (h) friction and brake components; (i) radiation-shield components; (j) catalyst carrier; and (k) composite materials.
    • 本发明提供直径或厚度小于1μm的化学官能化亚微米石墨原纤,其中原纤维不含连续的热碳外涂层,不含连续的中空芯,并且不含催化剂。 原纤维通过沿纤维轴线方向分裂微米级碳纤维或石墨纤维而获得。 这些官能化石墨纤维表现出特别高的导电性,高导热性,高弹性模量,高强度和与复合材料中的基体树脂的良好的界面粘合。 本发明还提供了几种含有亚微米石墨原纤的产品:(a)纸,薄膜,垫和网产品; (b)橡胶或轮胎产品; (c)燃料电池,锂离子电池和超级电容器等能量转换或存储装置; (d)粘合剂,油墨,涂料,涂料,润滑剂和油脂产品; (e)重金属离子清除剂; (f)吸收剂(例如,以回收溢油); (g)传感器; (h)摩擦和制动部件; (i)辐射屏蔽部件; (j)催化剂载体; 和(k)复合材料。