溶融高分子の異常流動性に関する研究(レオロジー(特集))

• 資料種別: 記事
• タイトル: 溶融高分子の異常流動性に関する研究
• 著者・編者: 大柳 康 他
• シリーズタイトル: レオロジー(特集)
• 著者標目: 大柳 康
• タイトル（掲載誌）: 材料 / 日本材料学会 [編]
• 巻号年月日等（掲載誌）: 20(212) 1971.05
• 掲載巻: 20
• 掲載号: 212
• 掲載ページ: 659～664
• 掲載年月日（W3CDTF）: 1971-05
• ISSN（掲載誌）: 0514-5163
• ISSN-L（掲載誌）: 0514-5163
• 出版事項（掲載誌）: 京都 : 日本材料学会
• 出版地（国名コード）: JP
• 本文の言語コード: jpn
• NDLC: ZM16
• 対象利用者: 一般
• 所蔵機関: 国立国会図書館
• 請求記号: Z14-267
• 連携機関・データベース: 国立国会図書館 : 国立国会図書館雑誌記事索引; https://ndlsearch.ndl.go.jp
• 書誌ID（NDLBibID）: 8220184; http://id.ndl.go.jp/bib/8220184
• 整理区分コード: 632

• 要約等: It is the object of the present study to inquire experimentally into the irregular flow behaviors of polymer melts in short capillary passages. The polymers tested are polyethylenes of high density, and three kinds of experimental methods, such as the flow property test by using KÔKA-type flow tester, the observation on flow patterns in a reservoir or on extrudates by using a test piece with flow marker of carbon black, and observation on the fringe patterns at the capillary inlet or in the capillary passage by using polarized light were used.<br>The results obtained are as follows;<br>(1) Four kinds of the types of extrudates, such as normal flow, spiraling flow, melt fracture flow and solid state fracture flow induced by the pressure were observed.<br>(2) The polarizing fringe at the capillary inlet is similar to a horse's hoof in shape in the normal flow region, and the number of fringes is directly proportional to the amount of apparent shear rate at the capillary wall.<br>(3) The polarizing fringe under spiraling or in the melt fracture flow regions has an unsteadly special shape, such as twisting or pulsation, and it seems reasonable that twisting of the polarizing fringe is induced by a small slippage or lecal high shear rate at or near the capillary inlet and causes the extrudate to flow spiraling. The pulsation of polarizing fringe is induced by the large slip or high shear rate which is generated on an inversed conical surface with a vertex angle about 30 degree in a reservoir and causes the extrudate to augment the melt fracture.
• DOI: 10.2472/jsms.20.659
• オンライン閲覧公開範囲: インターネット公開
• 連携機関・データベース: 科学技術振興機構 : J-STAGE; http://www.jstage.jst.go.jp

• 要約等: It is the object of the present study to inquire experimentally into the irregular flow behaviors of polymer melts in short capillary passages. The polymers tested are polyethylenes of high density, and three kinds of experimental methods, such as the flow property test by using KÔKA-type flow tester, the observation on flow patterns in a reservoir or on extrudates by using a test piece with flow marker of carbon black, and observation on the fringe patterns at the capillary inlet or in the capillary passage by using polarized light were used.<br>The results obtained are as follows;<br>(1) Four kinds of the types of extrudates, such as normal flow, spiraling flow, melt fracture flow and solid state fracture flow induced by the pressure were observed.<br>(2) The polarizing fringe at the capillary inlet is similar to a horse's hoof in shape in the normal flow region, and the number of fringes is directly proportional to the amount of apparent shear rate at the capillary wall.<br>(3) The polarizing fringe under spiraling or in the melt fracture flow regions has an unsteadly special shape, such as twisting or pulsation, and it seems reasonable that twisting of the polarizing fringe is induced by a small slippage or lecal high shear rate at or near the capillary inlet and causes the extrudate to flow spiraling. The pulsation of polarizing fringe is induced by the large slip or high shear rate which is generated on an inversed conical surface with a vertex angle about 30 degree in a reservoir and causes the extrudate to augment the melt fracture.
• DOI: 10.2472/jsms.20.659; https://doi.org/10.2472/jsms.20.659
• 関連情報（URI）: http://id.ndl.go.jp/bib/8220184; https://ndlsearch.ndl.go.jp/books/R000000004-I8220184
• 連携機関・データベース: 国立情報学研究所 : CiNii Research; https://cir.nii.ac.jp/
• 提供元機関・データベース: Japan Link Center; https://japanlinkcenter.org/top; 雑誌記事索引データベース; https://ndlsearch.ndl.go.jp; Crossref; https://www.crossref.org; CiNii Articles
• 書誌ID（NDLBibID）: 8220184; http://id.ndl.go.jp/bib/8220184
• NII論文ID: 110002300768