Preparation and Application of Ultra-thin Carbon (graphite) Ribbon

超薄碳（石墨）带的制备及应用

• 批准号: 06453085
• 负责人: MOCHIDA Isao
• 金额: $ 4.54万
• 依托单位: KYUSHU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06453085/
• 关键词: pitch; Carbon Ribbon; Graphite Ribbon; Ribbon; melt spinning; Orientation; Slit; mesophase pitch; 黒鉛リボン; 薄膜炭素; 配向度; 電気伝導度; 熱伝導度; 引張強度; 引張弾性率; 炭素繊維; Slit型ノズル; 延伸不融化; 断面組織

A mesophase pitch of 100% anisotropy prepared from methylnaphthalene using HF/BF_3 was spun through the slit-shaped nozzle in a temperature range of 260-275ﾟC.Very thin fibers were obtained, about 2-5mum in thickness and 10-18mum in width, according to spinning temperatere. The slit-shaped transversal section of tape was observed under optical microscope, scanning, and transmission electron microscopes. The symmetric Double Layr is proposed as a model of the cross-sectional texture, which carried radial orientation at the semicircular edges, onion-skin at the flat edges, alignments perpendicular to the flat edges in the intermediate parts, and aligunments parallel to the major axis at the central part of the ellipse fiber. Present carbon fibers exhibited better mechanical properties, as compared to those of round fibers spun through conventional circular nozzles. The fibers after graphitization at 2500ﾟC showed excellent tensile stength modulus as high as 340-395Kg/mm^2 and 84-92ton/mm^2, respectively. The particular shape and texture of transversal scction appears principally responsible for such tensile propertics.

以甲基萘为原料，HF/BF_3为催化剂，在260-275 ℃温度范围内，用狭缝式喷嘴纺制了100%各向异性的中间相沥青，根据纺丝温度的不同，得到了厚度约为2- 5 μ m，宽度约为10- 18 μ m的极细纤维。在光学显微镜、扫描电镜和透射电镜下观察了胶带的狭缝状横截面。提出了对称双层结构作为截面织构的模型，它在半圆形的边缘具有径向取向，在平坦的边缘具有洋葱皮结构，在中间部分具有垂直于平坦边缘的取向，在椭圆形纤维的中心部分具有平行于长轴的取向。与通过常规圆形喷嘴纺制的圆形纤维相比，本碳纤维表现出更好的机械性能。经2500 ℃石墨化处理后的纤维表现出优异的拉伸强度模量，分别高达340- 395 Kg/mm ^2和84- 92 ton/mm ^2。横截面的特殊形状和结构似乎是这种拉伸性能的主要原因。

项目成果

Y.Korai,S.Ishida,S-H.Yoon,Y G.Wang,I.Mochida,Y.Nakagawa,Y.Sakai and M.Komatsu: "Efficient Preparation of Meso-Carbon Microbeads from Synthetic Isotropic Pitch Derived from Naphthal" Carbon. 34・12. 1569-1576 (1996)

Y. Korai、S. Ishida、S-H. Yoon、Y G. Wang、I. Mochida、Y. Nakakawa、Y. Sakai 和 M. Komatsu：“从萘二甲酸衍生的合成各向同性沥青中有效制备介观碳微珠” 34·12。1569-1576（1996）

Y.Korai.Y-G.wang.S-H.Yoon.S.Ishida and I.mochida: "Preparation of meso-carbon microbeads with uniform diameter from AR-isotropic pitch in the presence of carvon black" Carbon. Vol.34, No.9. 1156-1159 (1996)

Y.Korai.Y-G.wang.S-H.Yoon.S.Ishida 和 I.mochida：“在香芹黑存在下，由 AR 各向同性沥青制备直径均匀的中间相碳微珠”。

Isao Mochida,Seong-Ho Yoon,Yozo Korai: "Preparation and Structure of Mesophase Pitch Based Thin Carbon Tape" J.Mater.Sci.28. 2135-2142 (1993)

Isao Mochida、Seong-Ho Yoon、Yozo Korai：“中间相沥青基薄碳带的制备和结构”J.Mater.Sci.28。

I.Mochida,K.H.An,K.sakanishi,Y.Korai: "Preparation of Nitrogen-rich Pitches from Diazanaphtalenes Using AIC3" Carbon. 34・5. 601-608 (1996)

I. Mochida、K. H. An、K. sakanishi、Y. Korai：“使用 AIC3 从二氮萘制备富氮沥青”Carbon 34・5。

I.Mochida,S.H.Yoon,N.Takano,E.Fprtin,Y.Korai and K.Yokogawa: "Microstructure of Mesophase Pitch based Carbon Fiber and its Control" Carbon. 34・8. 941-956 (1996)

I. Mochida、S. H. Yoon、N. Takano、E. Fprtin、Y. Korai 和 K. Yokokawa：“中间相沥青基碳纤维的微观结构及其控制” 34・8 (1996)。