成果報告書詳細
管理番号20130000000965
タイトル*平成24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2013/10/18
報告書年度2012 - 2012
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
英文要約Title: Summary of FY2012 project activities of Innovative Carbon Nanotubes and Their
Application Project for Low Carbon Society
The main achievements of our project in the 2012 fiscal year can be summarized as following:
1.Theme (1) (Development of techniques for controlling, separation and characterization of CNT’s structures and growth properties)
eDIPS samples were supplied to 12 companies. Regarding eDIPS application, hybrid yarns with the combination of SWCNT and PAN, transparent electric-conductive films, and highly
dispersed CNT ink technology for semiconductor by supercritical fluid were tried.
Specific surface area and crystallinity increased by heat treatment. By CO2 laser ablation method, we got controlled 2.0 nm mean diameter, controlled 0.2nm diameter distribution and G/D ratio of over 100 respectively. By using paper making method, single wall CNT (SWCNT) plates with density of 0.5g/cm3 were obtained. Efficient technique for the mass separation of the metallic and semi-conducting CNT with a capacity of 2g/day (1/5 of final target) was developed. In order to evaluate the length of SWCNT, we applied the infrared absorption method using Plasmon mode to PET film in which CNTs were dispersed.
2.Theme (2)(Technology development of uniform dispersion of SWCNT in existing materials)
We succeeded in making a large amount of the Super-Growth SWCNT dispersion liquid with latex dispersion method and obtained good electric-conductive silicon rubber. Thermal conductive composite rubber got 98W/mK thermal conductive ratio.
We found that electric conductivity has no increase on the condition of high temperature on the contrary of metal case. On the condition of over 80℃, CNT composite showed better electric conductivity than metal. We found several solvents showed good dispersion ability. Using Super-Growth CNT coated silica particle column developed by Kyusyu University, we found the ability of dispersion and mutual interaction of polymer/CNT had a good relationship. The result can be used for selection of dispersion.
For improvement of high heat conductive metal composite, we investigated full-width at half maximum of Raman-Peak. We found that the crystallinity depended on heating treatment temperature. Samples were supplied to companies, mainly for power semi-conductor heat radiation application.
3. Theme (3) (Development of techniques for voluntary safety management of nano-materials)
We selected property parameters and biological endpoints which are most appropriate for evaluation of Single Wall CNTs. We achieved the investigation of macrophage activity in vitro. We introduced the evaluating instruments which are small size and simple. We made the guidance about the evaluating methods. We made a book of guidance for voluntary safety management method using Super-Growth SWCNT. Next, we began to investigate the case study of eDIPS.
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