成果報告書詳細
管理番号20090000000179
タイトル*平成20年度中間年報 SBIR技術革新事業/繊維基材上への超撥水・高撥油表面形成技術の調査研究
公開日2009/7/31
報告書年度2008 - 2008
委託先名株式会社SNT
プロジェクト番号P08015
部署名研究開発推進部 技術革新・基盤技術グループ
和文要約以下本編抜粋:1.研究開発の内容及び成果等 1.1.実施内容と結果 1既存の撥水・撥油繊維に関する技術の調査および評価(株式会社SNT) インターネット、書籍、論文で報告されている撥水撥油技術について調査し、入手可能な基材について評価を行った。『超撥水』の名の付く繊維素材2点、師範撥水加工剤4点の計6点と当社開発品について撥水撥油評価をした。その結果、当社開発品が最も撥水撥油性能が高かった。撥水性の結果は、当社開発品の接触角が150°、転落角は5°以下で水滴はコロコロ転がった。
英文要約A feasibility study of coating agent and coating technique to establish a super-water-repellent and high-oil-repellent surface on a fabric.
The objective of this feasibility study is to find out coating agent and coating technique to make a super-water-repellent and high-oil-repellent surface. Research and Experimental 1. Interface science phenomenon was studied by internet researches, technical books, and journals, concerning a low surface free energy, surface tension of liquid, and liquid penetration into a fabric. 2. A coating agent was prepared. It contained four compounds, which were a fluoric coating agent, inorganic particles, and a binder as coating materials, and solvent. Six commercial agents and fabrics were purchased, and then measured CA of water and oil on every sample in order to compare these commercial products to SNT's coated sample. 3. Water and rapeseed oil droplets on a sample were observed in order to estimate a thermal durability of a super-water-repellency and high-oil-repellency from -40 to +40 degrees C. 4. CA of some liquids on the sample, which are water, rapeseed oil, trimethyl phosphate, trifluoroacetic acid and another fluoro-organic compound, was measured. 5. It was tried to spray a coating agent on fabric in order to fix a super-water-repellency and high-oil-repellency of a coated fabric. 6. In order to improve a flexibility of a coated fabric, two hypotheses were proposed. One was not to use particles for a coating agent because of particles' obstruction. The other was to modify a way of coating because of an inhomogeneous coating on fiber. A hardness test was undertaken by using a tension meter. Results 1. According to our researches, fluoromethyl functional group (CF3-) had a lowest surface free energy 6.7 mN/m. A fluoric agent was selected to prepare a SNT's coating agent. Inorganic particles were chosen to obtain a surface roughness and thermal stability. 2. A fabric was easily soaked in a SNT's coating agent. It was demonstrated to be able to apply our coating agent to textile. A prepared sample showed a super-water-repellency and a high-oil-repellency. Any commercial products did not show high-oil-repellency. 3. A SNT's coated sample had a thermal durability of a super-water-repellency and high-oil-repellency from -40 to +40 degrees C by the observation in a thermal controlled box. 4. CA of water on the sample was 150 degrees. CA of rapeseed oil was 140 degrees. CA of trimethyl phosphate was 128 degrees. CA of a fluoro-organic compound A was 115 degrees. It was demonstrated that CA of liquid on the sample was increased by using our coating agent. 5. To spray our coating agent on fabric was successfully carried out. It was presented to recover a super-water-repellency and high-oil-repellency by using a spray method. 6. From the results of the hardness tests, it was indicated that the modification of a way of coating made the flexibility of a coated fabric almost similar to a non-coated one.
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