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Effects of silane coupling agents on the interphase and performance of glass-fiber-reinforced polymer composites

Authors
Journal
Composites Science and Technology
0266-3538
Publisher
Elsevier
Publication Date
Volume
57
Issue
8
Identifiers
DOI: 10.1016/s0266-3538(97)00033-x
Keywords
  • A. Glass Fibres
  • A. Polymer-Matrix Composites
  • A. Coupling Agents
  • B. Interface
  • B. Mechanical Properties
Disciplines
  • Chemistry
  • Physics

Abstract

Abstract The properties of the fiber/matrix interphase in glass-fiber-reinforced composites can play a dominant rôle in governing overall composite performance. Understanding the interactions occurring at the interphase and being able to tailor them to give a desired composite property are of great importance. In this paper, a singlefilament model of a commercial glass-fiber-reinforcement manufacturing process was used to apply methacryloxy and amino silanes with one, two, and three silanols (mono-ol, diol, and triol) to two different glass fibers in a molecular model. Surface analyses by angular-dependent X-ray photoelectron spectroscopy (ADXPS), electric-kinetic analysis (EKA), and contactangle measurements were used to characterize the surface coatings. The micro-indentation technique was used to evaluate fiber/matrix interfacial adhesion. Changes observed in surface chemistry, micromechanics, and composite properties as function of the silanol type are correlated.

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