NPE 2009　II. NPE に参加して，射出成形・金型を中心に

• 大久保 健児

  大盛工業㈱

書誌事項

タイトル別名

• NPE 2009  II. NPE, Mainly Injection Molding and Mold
• 磁性粉末-ポリマー複合体のプレス成形におけるシランカップリング剤の添加効果
• ジセイ フンマツ ポリマー フクゴウタイ ノ プレス セイケイ ニ オケル シランカップリングザイ ノ テンカ コウカ
• Effect of Silane Coupling Agents on Compression Molding for Magnetic Filler Composites

抄録

Recently, high performance of noise suppression materials heve been required to suppress the electromagnetic noise generated from high frequencies of circuits and chips in electronic equipment. These are usually supplied as a sheet of filler composite consisting of magnetic powder and polymeric binder. High packing of soft magnetic powder within the sheet produces a significant suppression of electromagnetic noise. Therefore, silane was applied to magnetic powder with various kinds of silanes such as ionic, amino, methacrylic, vinyl, and epoxy silanes to increase packing of the filler within the binder. The packing was evaluated from the void calculated by specific gravity of the magnetic filler composite sheet. All silanes have lowered the void in the composite. This effect increases in the following order; epoxy, vinyl, methacrylic, amino, and ionic silanes. This means that ionic property of silane gives affinity to the binder. As a result, the magnetic permeability increases with specific gravity of the filler composite modified by the treatment with various kinds of silanes. Finally, the occurrence of the void was examined from the torque values of a twin axis mixing mill and also observed from a soft X ray image. The resulting value of the torque in the milling is not dependent on the kinds of silanes used in treating the filler. This means that the size of the void arises not from the mechanical process of milling, but mainly from the surface treatment with silane. In the observation of voids by the X-ray imaging, there are not only a lot of voids but also aggregates of the filler in a sheet of filler composites without surface treatment. Silane treatment significantly reduces voids and aggregates. In conclusion, silane treatment plays an important role on the homogeneous spread of the filler into the polymeric binder.

収録刊行物

• 成形加工

  成形加工 21 (10), 622-623, 2009-09-20

  一般社団法人 プラスチック成形加工学会

キーワード

• Filling
• Silane coupling agent
• Functional group
• Affinity
• Void

詳細情報

• CRID: 1390005506401764224
• NII論文ID: 130003691349
• NII論文ID: 10018780073
• NII書誌ID: AN10278882
• DOI: 10.4325/seikeikakou.21.622
• DOI: 10.4325/seikeikakou.18.684
• ISSN: 18837417
• ISSN: 09154027
• NDL書誌ID: 8524447
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8524447
• Web Site: https://www.jstage.jst.go.jp/article/seikeikakou1989/18/9/18_9_684/_pdf
• Web Site: https://www.jstage.jst.go.jp/article/seikeikakou/21/10/21_622/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可