成果報告書詳細
管理番号20150000000433
タイトル*平成26年度中間年報 SIP(戦略的イノベーション創造プログラム) 革新的設計生産技術 フルイディック材料創製と3Dプリンティングによる構造化機能材料・デバイスの迅速開発(2)
公開日2015/7/18
報告書年度2014 - 2014
委託先名DIC株式会社
プロジェクト番号P14030
部署名ロボット・機械システム部
和文要約
英文要約Title: Prompt development of functional materials and devices by creation of fluidic materials and 3D additive manufacturing (FY2014-FY2019) FY2014 Annual Report

In this research project, our mission is to develop new technology to fabricate specific inks that are utilizable in three-dimensional (3D) ink-jet (IJ) printing directed to construction of artificial tooth and solid-state Li-ion batteries. The inks to be designed herein require extremely high concentration of target ceramic nano particles, which is the most important issue of this research theme, to efficiently construct high density of the 3D objects. Key points that must be solved for obtaining highly concentrated ceramic inks are as follows; 1) achievement of low viscosity enough to work in IJ discharging processes; 2) development of consolidation method of 3D surface topology prior to calcination after ink deposition. The works carried out in the present year are as follows.
The primary concept to fabricate highly concentrated and low-viscosity inks is based on the supercritical hydrothermal synthesis that is developed by Adschiri et al. of Tohoku University. A key factor to obtain such specific inks is how come up with the great surface modification group on the ceramic particles having particular affinity for solvent. Therefore, work is performed to investigate the affinity between the surface attachment molecules and solvents by means of both simulation forecast and its experimental verification. Hansen solubility parameter (HSP), which is a widely used approach to predict substance solubility was utilized. The basis of HSP is that the total energy of vaporization of a liquid consists of several individual parts. On the other hand, solvent affinity of the surface-modified particles was evaluated by capillary penetration method, which monitors the rate at which a liquid penetrates into powder of the ceramic particles. The measurement was achieved by recording the depth of the liquid front intrusion as a function of time. As a consequence, the experimental results were found to be consistent with the HSP simulation data, thus demonstrating that the current approach is effective to predict the affinity of surface modification group with the solvent. Work is now progress to get more detailed information about this topic.
With regard to development of consolidation method of 3D surface topology, both ultraviolet (UV) ray and heating process are possible as a reaction trigger. On the basis of this background, a literature research was performed using an external agency. In this research, target materials are focused on metals and metal oxides, and these were refined by a concept of 3D printing and several keywords, e. g., adhesive, bonding, and etc. As a result, ca. 1,500 patents and ca. 4,000 non-patent literatures were finally obtained, and their analysis was completed and primary research idea could be constructed.
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