成果報告書詳細
管理番号20120000000662
タイトル*平成23年度中間年報 低炭素社会を実現する革新的カーボンナノチューブ複合材料開発プロジェクト
公開日2012/7/19
報告書年度2011 - 2011
委託先名技術研究組合単層CNT融合新材料研究開発機構 国立大学法人名古屋大学 国立大学法人九州大学
プロジェクト番号P10024
部署名電子・材料・ナノテクノロジー部
和文要約和文要約等以下本編抜粋:
1. 研究開発の内容及び成果等
本プロジェクトは、経済産業省が、企業、大学等の研究機関(委託先から再委託された研究開発実施者を含む)から公募によって研究開発実施者を選定し、共同研究契約等を締結する研究体を構築して、開始したものである。
英文要約Title: Innovative Carbon Nanotubes and Their Application Project (FY2010-FY2012)FY2011 Annual Report
1. Highly crystallized CNTs having G/D ratios > 200 were successfully synthesized by eDIPS method. In case of the single wall CNT obtaining from the Super-Growth method, single wall CNTs (SGCNT) with broaden orientation coefficients ranging from 0.13?0.85 and densities ranging from 0.003?0.05g/cm3 were successfully synthesized. We found that the mean diameter, FWHM and G/D ratio of SWCNT, which was produced by using a composite carbon target containing iron, was 2.0nm, 0.5nm and approximately 10. By using paper making method, SWCNT plate with the size of A3 was made. More than 90% of the as-prepared CNT with a capacity of 1.3g/day were successfully separated yielding highly purified metallic CNT up to 97% and semiconducting CNT up to 95%. The infrared absorption of SWCNT was found to be induced by the fundamental Plasmon mode of the finite-length metallic CNTs (antenna effects.) The catalyst-free CNT forest with a random network of long interconnected carbon nanotubes was achieved using Super-Growth method. This material exhibited a unique energy dissipation property in a very broaden operated temperatures up to 1000℃ and extremely high fatigue resistance even after one million cycles of the impact and oscillation tests.
2. A separation technique for the metallic and semiconducting CNT was established without the deteriorating the CNT. The combination of CNT with fluoride-based synthetic rubbers exhibit much higher electrical conductivities (10-3s/cm). In case of the development of highly thermal conducting composite materials including SGCNT, thermal conducting values are as high as Titanium. A CNT-based metallic composite containing 90wt% metal matrix that showed a low volume resistivity (<10-5Ω・cm) was achieved based on the electrode position process. We have found for the first time that polyvinylchloride (PVC) plays an efficient role for the dispersion of SGCNT in the polar organic solvents. A plasma-treated CNT-based metallic composite which exhibited high thermal conductivity up to 840W/mK was achieved. It was found that DMF or DMAc solution with SWCNT showed good dispersion. 
3. Using SGCNT as a model, we have succeeded in developing a sample preparation method. By using the preparation procedure, we have been able to select property parameters and biological endpoints which are most appropriate for evaluation of SWCNT. As measurement methods for CNTs, we have proceeded in evaluating the response of the compact and easy-to-use instruments. Using SGCNT as a model compound, we have selected voluntary safety management items that should be tested by manufacturers, and developed a draft case study report. Furthermore, we have collected information on the regulatory movements in other countries and introduced the Japanese translated articles on the NanoSafety website.
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