Iron phthalocyanine coatings on the surface of carbon fibers and their improved interfacial interactions with poly(arylene ether)nitrile

Abstract

Riveted carbon fibers (CFs) were fabricated via in situ thermopolymerization. Iron phthalocyanine was like rivets distributed on the surface of the acidulated CFs. The rivets were characterized by scanning electron microscopy (SEM) and distributed uniformly on the surface of the CFs with a uniform microsphere size of 120 nm. Next, the pristine and riveted CFs were used to prepare fiber-reinforced poly(arylene ether)nitrile (PEN)-based composites with a hot-press molding technique. The creep behaviors of PEN on the pristine and riveted CFs were investigated by dynamic rheological measurements. Among the samples, the viscosities changed with the frequency, and the stress relaxation and Cole-Cole plots are presented and discussed in detail. These results indicated better interlocking between the PEN chains and the rivets on the surface of the CFs. The dynamic mechanical properties of the composites were examined in three-point bending mode with a dynamic mechanical analyzer. The results indicate that the reduction of the tan d peak height may have been due to the improved interfacial adhesion between the CFs and PEN. Additionally, the interfacial morphologies of the CF-reinforced PEN composites were monitored; this also confirmed the improved adhesion between the PEN chains and the riveted CFs in comparison with that of the pristine CFs.

Improving the thermal and mechanical properties of poly(arylene ether nitrile) films through blending high‐ and low‐molecular‐weight polymers

“…Poly(arylene ether nitrile)‐phenyl (PEN‐Ph) as a kind of high‐performance engineering plastics is usually a linear polymer, and it is widely used in the commercial and academic fields due to its excellent performance such as outstanding chemical properties (radiation resistance, low flammability, and toxic gas emission), high thermal stability, superior mechanical properties as well as good molding workability . The PEN with different dihydric phenol structure (Figure ) possesses different properties.…”