INTERFACIAL MODIFICATION OF QUARTZ FIBER REINFORCED SILICON-ARYLACETYLENE-CONTAINING RESIN COMPOSITE BY COUPLING AGENT

Abstract

Abstract: Silicon-arylacetylene-containing resins are organic and inorganic hybrid resins. They were potentially useful as functional materials and exhibited remarkable heat resistant properties and good anti-ablative performances. While, the poor interfacial adhesion with quartz fiber limited the mechanical properties of their composites, due to the resins'weak molecular polarity and low surface energy. A silane coupling agent containing isocyanate was designed and employed in this paper in order to modify the interface of quartz fiber reinforced silicon containing arylacetylene (PSA) composite. The results showed that the interlaminar shear strength (ILSS) of the treated quartz fiber-PSA composite has been greatly improved by 44.7% compared with those untreated. The characterization of the fibers and composites with X-ray photoeletron spectroscopy (XPS), surface energy analysis, atom force microscope (AFM) and scanning electron microscope (SEM) revealed that the coupling agent reacted with the active groups on fiber surface and polar functional groups generated, which increased the quartz fiber's surface energy. As the result, the interfacial adhesion performance between the fibers and the resin improved, the composite's interlaminar shear strength increased.

Key words: isocyanate, silane coupling agent, quartz fiber, PSA resin, interfacial modification

CLC Number:

TB332
TQ342

LIANG Xiu-hua, HU Yan-hong, DU Lei, HUANG Fa-rong. INTERFACIAL MODIFICATION OF QUARTZ FIBER REINFORCED SILICON-ARYLACETYLENE-CONTAINING RESIN COMPOSITE BY COUPLING AGENT[J]. COMPOSITES SCIENCE AND ENGINEERING, 2013, 0(8): 44-50.

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