Mechanical properties and structure of solvent processed novolac resin/layered silicate: Development of interphase region

Jahanmard, P ; Sharif University of Technology | 2015

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  1. Type of Document: Article
  2. DOI: 10.1039/c5ra12458a
  3. Publisher: Royal Society of Chemistry , 2015
  4. Abstract:
  5. Composites of phenol-formaldehyde (PF) resin with Closite Na+ and Closite 30B up to 20 wt% loadings were prepared by solution mixing. Tensile testing showed that both pristine and organically modified clays increased considerably the mechanical properties of PF resin at 2.5 wt% loading followed by marginal improvement or even sacrificed properties at high loadings. DMA and DSC analyses suggested development of a highly crosslinked and well adhered interphase around silicate layers. A novel three-phase model considering the interphase region was proposed to predict composite modulus. The model was successfully employed to correlate morphological characteristics and mechanical properties of PF/clay composites
  6. Keywords:
  7. Resins ; Silicates ; Tensile testing ; Composite modulus ; Interphase regions ; Modified clays ; Morphological characteristic ; Phenol formaldehyde ; Silicate layers ; Solution mixing ; Three phase model ; Mechanical properties
  8. Source: RSC Advances ; Volume 5, Issue 98 , Jun , 2015 , Pages 80875-80883 ; 20462069 (ISSN)
  9. URL: http://pubs.rsc.org/en/Content/ArticleLanding/2015/RA/C5RA12458A#!divAbstract