Design and preparation structure/function integrated polymer composites with high thermal conductivities and ideal mechanical properties have attracted widespread attention. Nanoscale graphene were employed to fabricate the thermal-structural integration graphene/carbon fiber/copoly (phthalazinone ether sulfone ketone) composites via solution prepreg followed by hotcompression method. The thermal conductivity (λ) and mechanical properties were all improved with the formation of graphene thermally conductive selfreinforced network. The thermal conductivity was increased to 1.057 W/(m K) by 89.8% higher than the pure carbon fiber composites. Moreover, the flexural strength (1878 MPa), compressive strength (907 MPa) and interlaminar shear strength (66 MPa) of graphene-modified composites improved with 22.1%, 51.9%, and 24.5% than the conventional composites, respectively. Dynamic mechanical analysis has proved that graphene/carbon fiber/copoly (phthalazinone ether sulfone ketone) composites had excellent high temperature mechanical properties, which presented a great potential for structure/ function integrated composites.
K E Y W O R D Scarbon fiber composite, structure/function integrated, thermal conductivity
| INTRODUCTIONCarbon fiber (CF) reinforced thermoplastic composites (CFRTPs) have become the crucial materials via excellent performance in multiple fields. The optimized combination of high-performance CF and various resin matrix (polyetherimide, polyphenylene sulfide, polyetherketoneketone, etc.) can meet the development requirements of aerospace, military, general aviation, satellite, energy, automobile and electronics industry for advanced materials with lightweight, high strength, high impact resistance and high temperature resistance. [1][2][3][4][5][6] As a new type of high-performance engineering plastic, copoly (phthalazinone ether sulfone ketone)
This paper presented a facile and effective way to modify copoly(phthalazinone ether sulfone ketone) (PPBESK) resin with SiC nanowires (SiC NWs) to improve the mechanical and thermal properties of CF/PPBESK composites. The results showed that linear SiC NWs with a diameter of about 3 μm and length of about 100 μm were uniformly incorporated into the composite, which greatly enhanced the toughness of the PPBESK resin and the interfacial performance between the CF and PPBESK. Compared with the untreated compos-
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