成果報告書詳細
管理番号20160000000834
タイトル*平成27年度中間年報 低炭素社会を実現するナノ炭素材料実用化プロジェクト (2)ナノ炭素材料の応用基盤技術開発(TASC)
公開日2016/9/28
報告書年度2015 - 2015
委託先名技術研究組合単層CNT融合新材料研究開発機構
プロジェクト番号P10024
部署名材料・ナノテクノロジー部
和文要約
英文要約 Title: Nanocarbon application project to realize a low carbon society

The main achievements of our project in the 2015 fiscal year can be summarized as following:
Theme II-1-2
As for "Development of measurement techniques for emission/exposure amount of carbon nanomaterials", TASC has investigated a method for quantifying emitted carbon nanomaterials by using thermal carbon analysis and a technique for collecting air-borne particles. We conducted field studies and simulated emissions tests to assess carbon nanomaterials emitted from the composites or exposed from the composite surface. In addition to emission/exposure assessments, TASC performed toxicity assessment of CNTs by a set of in vitro cell-based tests. TASC also performed measurement of total protein, inflammatory cytokines, comprehensive gene expression, etc. using lung tissue samples from rats intratracheally instilled with some CNTs for the validation of in vitro cell-based assay. TASC has updated case study reports for Super-Growth (SG) and eDIPS SWCNTs.
Theme II-2 
We have succeeded in measuring the size and size distribution of CNTs dispersed in solvent and have developed a method to quantitatively evaluate the CNT bundle structure in solution. We have succeeded in measuring the CNT current pathways in high resolution by using lock-in thermal analysis. We have found a correlation between the uniformity of the CNT thin film and the device characteristics of CNT transistor. We have developed a simulation method to investigate the CNT dispersion structure both through static and dynamic approaches. We have found that the characteristics of the CNT composite material could be improved by removing debris consisting of short CNTs. We have collected several varieties of commercial CNTs and have evaluated the structures for each in the as-received material. By utilizing the computational chemical technique, we investigated suitable dispersants for the variety of CNTs.
Theme II-3-4
We have developed a composite material of CNT and plastic which exhibited thermal robustness to ~420 ℃. We have developed a new carbon fiber reinforced plastic (CFRP) by integrating a CNT coating onto the carbon fiber. We have developed a fabrication technology suitable for CNT thick-film electrodes. This thick-film technology enabled the development of micro-fabricated CNT comb-shaped electrodes of 10μm for micro-supercapacitors. We have developed the technology to fabricate CNT-copper composite fibers of length ~2cm. In addition, to further investigate alternative fabrication methods for this innovative material, we have developed a process method to produce CNT-copper composite by spark current sintering.
Theme II-3-5
 In FY2015 we performed the developments of “Graphene Atomic Layer Membrane by Plasma CVD”, Multi-layer graphene by high-temperature treatment of polymer”, and“Exfoliated Graphene Dispersion and Integrated Films by Liquid Phase Process”. We successfully met the targets as following: First, Graphene transparent conductive film of A4 size with transmittance of 93% and sheet resistance of 150Ω; second; Development of synthesis technique of multi-layer graphene with thickness of 0.1-3μm, high carrier mobility, and sample provide; third, Measurement of electrical conductivity of individual piece of exfoliated graphene and its integrated films made from graphite by exfoliation technique appropriate to mass production.
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