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Digitale Medien

Macrostructure and environment-influenced surface layer in epoxy polymers (1967)

Cuthrell, R. E.

New York, NY [u.a.] : Wiley-Blackwell

Journal of Applied Polymer Science 11 (1967), S. 949-952

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Details

ISSN: 0021-8995

Schlagwort(e): Chemistry ; Polymer and Materials Science

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie , Maschinenbau , Physik

Notizen: Several epoxy polymers were shown to be two-phase systems; roughly spherical floccules arranged in layers in an interstitial fluid resembling the starting materials. The size of the floccules was found to be dependent on the initial rate of cure of a given polymer. The density, hardness, glass transition temperature, etching rate, and dielectric strength were related to the floccule size. The surface layer in the epoxy polymers and in several thermoplastic polymers was found to be different from the bulk material. The properties of the surface layer are dependent on the surface energy of the mold material and on the atmospheric environment. A gradient in properties was found to extend from the polymer surface several hundred microns into the bulk.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/app.1967.070110614

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