球晶成長したポリ乳酸の絶縁破壊特性

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2014/04/01

タイトル(英語): Dielectric Breakdown Properties of Poly-Lactic Acid with Spherulites Growth

著者名: 松ヶ崎　成（八戸工業大学大学院工学研究科電子電気・情報工学専攻），信山　克義（八戸工業大学大学院工学研究科電子電気・情報工学専攻），藤田　成隆（八戸工業大学大学院工学研究科電子電気・情報工学専攻）

著者名(英語): Naru Matsugasaki (Hachinohe Institute of Technology), Katsuyoshi Shinyama (Hachinohe Institute of Technology), Shigetaka Fujita (Hachinohe Institute of Technology)

キーワード: バイオプラスチック，ポリ乳酸，絶縁破壊特性，機械的特性，球晶　　bioplastics，poly-lactic acid，breakdown properties，mechanical properties，spherulites

要約(英語): Polylactic acid (PLA) is a bioplastic and a biomass material that is made from corn starch, etc. Having studied the potential of PLA as an electrical insulation material, the authors have demonstrated that PLA has high resistivity, high dielectric breakdown strength and other outstanding electrical insulation properties equivalent to those of low-density polyethylene (LDPE) and other petroleum-based plastics within a temperature range from room temperature to approximately 70℃. The degree of crystallinity of PLA was increased by heat treatment, and the dielectric breakdown strength (EB) and mechanical properties of the obtained PLA of different spherulite sizes were studied. PLA heat-treated at a temperature of 120℃ or higher showed rapid increases in spherulite size. At both measurement temperatures of 25℃ and 80℃, the EB showed rapid falls when the heat treatment temperature was 120℃ or higher. At a measurement temperature of 25℃, the tensile strength at break and breaking elongation showed rapid falls when the heat treatment temperature was 120℃ or higher.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.134 No.4 （2014） 特集：平成25年基礎・材料・共通部門大会

本誌掲載ページ: 237-242 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/134/4/134_237/_article/-char/ja/