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Stiffness improvements and molecular mobility in epoxy-clay nanocomposites
Luleå tekniska universitet.
Luleå tekniska universitet.
Luleå tekniska universitet.
2001 (Engelska)Ingår i: Organic/Inorganic Hybrid Materials - 2000: symposium held April 24-28, 2000, San Francisco, California, U.S.A. / [ed] Richard M Laine, Warrendale, Pa: Materials Research Society, 2001, s. CC11.8.1-CC11.8.7Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

Conventional composites filled with clay as well as intercalated nanocomposites, and exfoliated nanocomposites based on a glassy epoxy matrix have been synthesised. Flexural moduli of these materials were measured in three-point bending at various clay contents. For a given clay content, stiffness improvements depended not only on the dispersion of the clay on the microscale, but also on the exfoliation of the clay layers at the nanolevel. Dynamic mechanical measurements indicated a decrease of intensity in the glass transition peak with the extent of exfoliation of the clay and the clay content, suggesting a restriction of the molecular mobility of the polymer in the vicinity of the clay layers. A shift in Tg of 20 deg C towards lower temperature for the epoxy resin cured at 160 deg C was possibly caused by thermal degradation of compatibilizing agents at high temperature.

Ort, förlag, år, upplaga, sidor
Warrendale, Pa: Materials Research Society, 2001. s. CC11.8.1-CC11.8.7
Serie
Materials Research Society Symposium Proceedings, ISSN 0272-9172 ; 628
Nationell ämneskategori
Kompositmaterial och -teknik
Forskningsämne
Polymera konstruktionsmaterial
Identifikatorer
URN: urn:nbn:se:ltu:diva-37481Lokalt ID: b8822810-b9d2-11db-b560-000ea68e967bISBN: 1558995366 (tryckt)OAI: oai:DiVA.org:ltu-37481DiVA, id: diva2:1010979
Konferens
Organic/Inorganic Hybrid Materials : 24/04/2000 - 28/04/2000
Anmärkning
Godkänd; 2001; 20070211 (ysko)Tillgänglig från: 2016-10-03 Skapad: 2016-10-03Bibliografiskt granskad

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Totalt: 31 träffar
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