Abstract
AbstractThe two important factors affecting the mechanical properties of fiber‐reinforced composite materials are the interfacial shear strength (IFSS) and wettability. The IFSS and wettability of glass fiber in a polycarbonate (PC)/styrene‐co‐acrylonitrile (SAN) blend system were measured by the single fiber fragmentation test (SFFT) and the Wilhelmy method, respectively. Styrene‐co‐maleic‐anhydride (SMA) was used as a compatibilizer and the glass fiber was surface‐treated with organosilane coupling agents to induce chemical bonding between maleic anhydride and silanol. The IFSS was found to increase with the content of SMA copolymer and then level off: There was an optimum level of the SMA content for a given silanol content. The IFSS and wettability increased with increasing SAN content, and the wettability showed quite similar behavior to the case of the IFSS with respect to SAN content. The effect of the miscibility of SAN/SMA blends on the IFSS was also investigated. The IFSS was greatly affected by the miscibility of SAN/SMA blends, which is mainly dependent on the copolymer compositions of SAN and SMA. Higher IFSS was obtained when the SAN/SMA blend was miscible.
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