成果報告書詳細
管理番号20150000000366
タイトル*平成24年度中間年報 「新エネルギーベンチャー技術革新事業 新エネルギーベンチャー技術革新事業(燃料電池・蓄電池) 家庭用燃料電池等用エアロゲル系耐熱性断熱材の組成物とその一体成形方法の技術開発」
公開日2015/7/17
報告書年度2012 - 2012
委託先名井前工業株式会社 株式会社セラフト 公立大学法人大阪府立大学
プロジェクト番号P10020
部署名イノベーション推進部
和文要約
英文要約Title: New Energy Venture Business Technology Innovation Program/ New Energy Venture Business Technology Innovation Program (Fuel Cells and Batteries)/ Development of Metal Mold Forming Method and Optimization of Insulation Composition with Aerogel for Residential Fuel Cells System (FY2012-FY2013) FY2012 Annual Report

Fumed silica, which is used as insulation for the reformer of the residential fuel cells system, has some issues such as a cost performance and a delivering stability etc. To solve these issues, this project aims at the achievement of cost reduction by the metal mold forming of thermal insulation with aerogel. This thermal insulation is composed of hydrophobic aerogel, calcium silicate, reinforced fiber and surface active agent. The thermal conductivity and the flexural strength of development insulation achieved 20mW/(mK) and 15N/cm2 , matched to the currently used material (Fumed silica) at the room temperature by optimizing the material composition. The thermal insulation performance at high temperature region was improved by adding TiO2 and SiC as an infrared reflectiveness material which controls a heat transfer by the radiation. It is difficult that aerogel with low specific gravity is slurried mixing with the other materials such as the calcium silicates. This project examined the optimal kneading condition by changing the rotating speed of the kneader blade and the mixing time using a kneader of 50L. As a result, the optimal slurry to which aerogel disperses almost uniformly was obtained under the rotating speed of 900rpm and the mixing time of 30 minutes. The fundamental metal mold forming characteristic was examined using a hexahedron metal mold. As a result, if the rate of compression is slow, the insulation with a good surface condition can be made by the metal mold forming method because water in slurry can be exhausted without damaging components. On the other hand, although the molding characteristic of cylindrical insulation was also examined using the cylindrical filtered water metal mold made for trial purposes. Although it was confirmed that the integral molding of cylindrical insulation can be obtained by the axial compression, it was also confirmed that the molding time became longer to require the time of drainage. It is necessary to examine the drainage position and the dewatering method of the metal mold to improve productivity by the next project. Moreover, the temperature dependency and the change with the lapse of time of thermal conductivity in the development insulation were measured with the heat insulation property evaluation apparatus. Although the temperature dependence from room temperature to 700 degrees centigrade can be obtained, the accuracy of thermal conductivity measurement is poor because the experimental system was not kept on the 1 dimension heat flow. The method of forecasting thermal conductivity after ten years from a change with the lapse of time of thermal conductivity was established.
By visiting the main customer, the specification of insulator and their target price became clear.
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