成果報告書詳細
管理番号20110000001188
タイトル*平成22年度中間年報 超ハイブリッド材料技術開発(ナノレベル構造制御による相反機能材料技術開発)(3)
公開日2011/9/9
報告書年度2010 - 2010
委託先名独立行政法人産業技術総合研究所
プロジェクト番号P08022
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
本研究開発においては、超ハイブリッド材料開発に必要となる計測、解析技術の開発と、そこから得られる計測・解析結果を材料開発グループに提供することにより、プロジェクトの推進を支援することを目標としている。本年度は、超ハイブリッド材料用組成分析装置として光電子顕微鏡(PEEM)と飛行時間形質量分析装置(TOF-SIMS)の性能向上を図るとともに、集中研究における熱伝導材料開発の進展に合わせ、計測・解析の対象も熱伝導材料に拡大してデータ収集を行った。材料機能インフォマティクスを柱とする統合データ解析については、熱物性顕微鏡観察を行って伝導機構の知見を得ると共に、ミクロンから数mm程度までのマルチスケールでの粒子分散配向構造の検出・評価手法を開発し、マクロな熱物性との比較検討を行った。更に熱物性計測・解析では、熱物性顕微鏡の高度化を行い、ハイブリッド材料内の熱伝導パスの評価を目的とした熱伝播の分布評価技術を開発した。
英文要約This study aims at developing measurement and the analysis technologies for Super-Hybrid materials. The data obtained by developed techniques are offered to the material development groups. An outline of the results in this fiscal year is summarized as follows.
(1) An excitation photon source in the Vacuum UV (VUV) region was improved in a photoelectron emission microscopy (PEEM) system. Helium discharge lamp emitting at 21.2 eV was installed to evaluate dispersion state of nanoparticles for various sample of hyper-hybrid material.
(2) To analyze super hybrid materials, we have developed an orthogonal acceleration Time-of-Flight Secondary Ion Mass Spectrometry (TOF-SIMS) system with a metal-cluster-complex ion source. The use of a continuous primary beam of Ir4(CO)7+ substantially increased ion fluence, resulting in higher secondary ion signals and reduced acquisition times. Experimental results demonstrated that secondary ion intensity was significantly enhanced by Ir4(CO)7+ bombardment, indicating that the use of the TOF-SIMS system enables us to analyze organic materials with high sensitivity as well as high efficiency.
(3) The positron lifetime distribution analysis, which gives us information on size distribution of sub-nano and nano-voids, has been performed on the positron lifetime spectra of zirconia nanoparticles in GLYMOU.
(4)The materials studied were extended from optical materials to thermal conductive materials. Boron nitride particles were modified by organic molecules using supercritical hydrothermal synthesis, and the modified particles were studied by solid-state nuclear magnetic resonance.
(5) To understand an unexpected inhibition of increase in thermal conductivity for BN/resin compounds, we took full-scale sample surface images (7mm×7mm), and characterized inhomogeneity in each segmented-image (100um×100um) in terms of the BN/resin boundary structural length and anisotropy angle by introducing a new method that is based on the concept of the direction-dependent variogram. The results show that the inhibition of increase in thermal conductivity can be explained not by primary BN/resin boundary structures, but by the presence of larger-scale onion-like secondary structures.
(6) A measurement technique for two-dimensional heat diffusion from a point heat source has been developed in order to obtain quantitative thermal diffusivity for small size of specimens and to get a heat spreading image for graded materials. Using the developed technique, formation of thermophysical contrast such as heat path and heat isolation in the hybrid polymers was clearly observed.
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