ポリプロピレンの成形加工時における熱劣化

• 来田村 實信

  滋賀県立大学工学部材料科学科

• 田中 登紀子

• 栗山 照弘

• 宮川 栄一

  滋賀県東北部工業技術センター

• 田中 皓

• 川端 成彬

書誌事項

タイトル別名

• Heat Degradation of Poly(propylene) in Extruding Cycles
• ポリプロピレン ノ セイケイ カコウジ ニ オケル ネツ レッカ

抄録

Poly(propylene) samples were reprocessed in multiple cycles by a single-screw extruder. The heat degraded samples reprocessed were characterized by dynamic viscoelasticity and stress-strain measurement.<br>The decrease (M_w/M_w0) in molecular weight of poly(propylene) with reprocessing was expressed by the product (f(n, T)·g(t, T)) of a function of cycles number (n) of extrusion consisting of virgin and degraded samples and a function of time (t) required in extrusion at a given temperature (T). Especially, at a temperature below 190°C, M_w/M_w0 was expressed only by f(n, T). In blend system M_w/M_w0 was expressed by similar relationship, suggesting that the synergy effect of blend on the heat degradation was absent. Young’s modulus (E) and yield stress (σ_y) obtained from stress-strain curves did not change regardless of the virgin, heat degraded and blend samples.

収録刊行物

• 環境資源工学

  環境資源工学 51 (2), 77-82, 2004

  一般社団法人 環境資源工学会

キーワード

• Poly(propylene)
• multiple cycles reprocessing
• heat degradation
• viscoelasticity
• stress-strain behavior

詳細情報

• CRID: 1390282680184820224
• NII論文ID: 130000103638
• NII書誌ID: AA11907992
• DOI: 10.4144/rpsj.51.77
• ISSN: 13499262
• ISSN: 13486012
• NDL書誌ID: 6980451
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6980451
• 本文言語コード: ja
• データソース種別:
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  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可