Effects of Compaction Pressure on Sintering Process of Poly-tetrafluoroethylene.

• Kuriyama Takashi

  Department of Materials Science and Engineering Yamagata University

• Narisawa Ikuo

  Department of Materials Science and Engineering Yamagata University

Bibliographic Information

Other Title

• プラスチック成型加工における圧力効果　ＰＴＦＦ焼成プロセスにみられる圧力効果
• PTFE ショウセイ プロセス ニ ミラレル アツリョク コウカ

Abstract

The purpose of this article is to investigate the effect of compaction pressure on the sintering of PTFE moldings. The major factor of this process are both compaction pressure and dwell time, which lead to high compactability of moldings. Bulk density of the moldings compacted at a lower pressure increases by sintering due to coalescence of particles by viscous flow. On the other hand, there is no change of the density by sintering in higher compacted moldings, since the coalescence of particles has been already finished in the pre-forming process and sintering does not eliminate inter-particle cavities. In this case, even if the moldings are sintered in shorter times nearly at the melting temperature, their bulk density reaches a constant value.

Journal

• The Review of High Pressure Science and Technology

  The Review of High Pressure Science and Technology 5 (4), 208-215, 1996

  The Japan Society of High Pressure Science and Technology

Keywords

• Poly-tetrafluoroethylene
• Sintering
• Compaction pressure
• Bulk density
• Crystallinity

Details

• CRID: 1390282679359122176
• NII Article ID: 10002848343
• NII Book ID: AN10452913
• DOI: 10.4131/jshpreview.5.208
• ISSN: 13481940
• ISSN: 0917639X
• NDL BIB ID: 4107220
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4107220
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed