Development of ultra micro-displacement using micro-coiled carbon fiber

使用微卷碳纤维开发超微位移

• 批准号: 07650108
• 负责人: IWANAGA Hiroshi
• 金额: $ 1.47万
• 依托单位: Nagasaki University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07650108/
• 关键词: Carbon fiber; Carbon coil; Micro-coil; Electrical resistivity; Tensile strength; Shear modulus; コイル状ファイバー; カーボン・コイル; 電気抵抗率; カーボン・ファイバー; マイクロ・コイル; 変位計

In the tensile sxperiments using an optical microscope, load was applied by a weight, which was a piece of cover glass in our experiments. The weight was connected to one end of a coiled carbon, of which the other end was fixed. BY inclining the optical microscope gradually together with the microscope stage, we observed that the weight slid on the specimen. We took accurate measurements of the coiled carbon elongations from optical micrographs at inclination angles of 40ﾟ and 50ﾟ.The shear modulus G of the material is given by 64nr^4w/d^4delta where, d is the fiber diameter, r the coil radius, delta the amount of elongation and n the number of turns. The calculated shear modulus of the coiled carbon fiber is G=85 GPa.The bulk electrical resistivity of the carbon coils was 1.0-0.2OMEGAcm depending on the bulk density. On the oter hand, the electrical resistivity on one carbon coil which is about 1mm in length, 8mum in coil diameter and 2mum in fiber diameter. The calculated electrical resistivity of the fiber was 1.09*10^<-2>OMEGAcm.

在使用光学显微镜的拉伸实验中，通过重物施加负载，在我们的实验中该重物是一块盖玻璃。重物连接到卷曲碳的一端，另一端固定。通过逐渐倾斜光学显微镜和显微镜载物台，我们观察到重物在样品上滑动。我们通过倾斜角为 40° 和 50° 的光学显微照片精确测量了卷曲碳的伸长率。材料的剪切模量 G 由 64nr^4w/d^4delta 给出，其中，d 是纤维直径，r 是线圈半径，δ 是伸长量，n 是匝数。计算得到的卷曲碳纤维的剪切模量为G=85 GPa。根据卷密度，碳卷材的体电阻率为1.0-0.2Ωcm。另一方面，长度约为1mm、线圈直径为8μm、纤维直径为2μm的碳线圈的电阻率。计算出的纤维电阻率为1.09×10 1 -2 Ωcm。

项目成果

S.Motojima,S.Kagiya K.Ando,H.Iwanaga: "Vapor phase preparation of micro-coiled carbon fibers by metal powder catalyzed Pyrolysis of acetylene" Carbon. 33. 1167-1173 (1995)

S.Motojima，S.Kagiya K.Ando，H.Iwanaga：“金属粉末催化乙炔热解气相制备微卷碳纤维”碳。

S.Motojima,I.Hasegawa H.Iwanaga: "Vapour growth of micro-coiled ceramic fibers and their properties" Journal De Physigueiv. 5. 1061-1068 (1995)

S.Motojima，I.Hasekawa H.Iwanaga：“微卷陶瓷纤维的气相生长及其特性”Journal De Physigueiv。

S.Motojima,S.Kagiya H.Iwanaga: "Vapour phase preparation of micro-coiled carbon fibers using Ni catalyst and PH_3 impurity" Materials Science and Engineering. 34. 47-52 (1995)

S.Motojima，S.Kagiya H.Iwanaga：“使用Ni催化剂和PH_3杂质气相制备微卷曲碳纤维”材料科学与工程。

S.MOTOJIMA and H.IWANAGA: "Catalytic effects of metal carbides,oxides and Ni single crystal on the vapor growth of the micro-coiled carbon fibers" Carbon.Vol.34,. 289-296 (1996)

S.MOTOJIMA 和 H.IWANAGA：“金属碳化物、氧化物和 Ni 单晶对微卷碳纤维气相生长的催化作用”Carbon.Vol.34，。

S.Motojima,Y.Itoh S.Asakura,H.Iwanaga: "Preparation of micro-coiled carbon fibers by mctal powder activated pyrolysis of acetylene containing sulfer compounds" J.Materials Science. 30. 5049-5055 (1995)

S.Motojima，Y.Itoh S.Asakura，H.Iwanaga：“通过含硫化合物乙炔的麦塔尔粉末活化热解制备微卷碳纤维”J.Materials Science。