THE ELASTIC AND PLASTIC MECHANICAL RESPONSES OF MICROCELLULAR FOAMS

OZKUL M. H., MARK J., AUBERT J.

JOURNAL OF APPLIED POLYMER SCIENCE, cilt.48, sa.5, ss.767-774, 1993 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 48 Sayı: 5
  • Basım Tarihi: 1993
  • Doi Numarası: 10.1002/app.1993.070480502
  • Dergi Adı: JOURNAL OF APPLIED POLYMER SCIENCE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.767-774
  • İstanbul Teknik Üniversitesi Adresli: Evet

Özet

Microcellular foams were prepared by the thermally induced phase-separation technique, which yields materials having very small cell dimensions (0.1-20 mum). The polymers employed were isotactic polystyrene, polyacrylonitrile, poly(4-methyl-1-pentene), polyurethane, and Lycra(R) and the resulting foams all had densities in the range 0.04-0.27 g cm-3. Values of Young's modulus and the collapse stress for these foams were measured and compared with predictions for conventional foams containing defects. Also investigated were plastic deformations, some time-dependent behavior, and Poisson's ratio.