CAJ | 학술논문

由于碳纳米管特殊的中空结构及高的比表面积，其对气体与液体的吸附有极大的先天优势。研究了不同环境下碳纳米管纤维对氧气与水分的吸附与解吸过程中其电子特性变化。电弧实验表明，碳纳米管纤维在较低电压(≤30 V)与相应电流下(＜2 A)可以产生强烈电弧，同时局部产生高温；高温易使纤维对氧气产生解吸，从而引起纤维电阻增大。室温条件下碳纳米管纤维对空气中水分子的吸附较对氧分子要强，水分子吸附增加了其表面羟基基团，使得其内部空穴数量减少，导电性降低，纤维电阻增大。
유우탄납미관특수적중공결구급고적비표면적，기대기체여액체적흡부유겁대적선천우세。연구료불동배경하탄납미관섬유대양기여수분적흡부여해흡과정중기전자특성변화。전호실험표명，탄납미관섬유재교저전압(≤30 V)여상응전류하(＜2 A)가이산생강렬전호，동시국부산생고온；고온역사섬유대양기산생해흡，종이인기섬유전조증대。실온조건하탄납미관섬유대공기중수분자적흡부교대양분자요강，수분자흡부증가료기표면간기기단，사득기내부공혈수량감소，도전성강저，섬유전조증대。
Carbon-nanotubes (CNTs)had great advantages on the adsorption of gas and liquid for its special hol-low structure and high specific surface area.Electronic properties of CNT fibers were related to the concentra-tion of oxygen and moisture during the adsorption and desorption process under different conditions.CNT fibers had greater adsorption to moisture than to oxygen at room temperature;the adsorption moisture increases the number of hydroxyl group and decreases the holes number of the CNT fibers surface,resulting in the decrease of conductivity of CNT fibers.At high temperature,CNT fibers prone to oxygen desorption,and that leads to its resistance increase.Arc experimental results also showed that CNT fibers can produce intensive electric arc accompanied with great energy at low voltage (≤30 V)and corresponding current (<2 A),and that show the great application prospect of CNT fibers in electric arc industry.