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Interface and mechanical properties of poly(methyl methacrylate)–fiber composites

✍ Scribed by Tingxiu Xie; Guisheng Yang

Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
287 KB
Volume
93
Category
Article
ISSN
0021-8995

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✦ Synopsis

Abstract

Long‐fiber pellets were made by an in situ pultrusion process. Fiber‐reinforced composites were prepared by an injection‐molding process and an extrusion/injection‐molding method with pellets, respectively. SEM observations showed that the strong interface was maintained during the injection process for low shearing forces, although polymer adhesion to the fiber surface was completely delaminated in the process of extrusion/injection molding for very high shearing forces. Enhanced adhesion of composites promoted substantial improvement of mechanical properties compared to those with poor adhesion. However, the enhanced adhesion between the fiber and the matrix also sacrificed the impact resistance properties. Longer fibers substantially enhanced the properties of composites. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 93: 2478–2483, 2004

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