Synergistic enhancement of CF/PP composite materials by PP-g-MAH and aminated silica nanoparticles

doi:10.19936/j.cnki.2096-8000.20250628.006

Abstract

Abstract: The strength of the resin itself and the interface strength between the resin and carbon fiber are important factors affecting the mechanical properties of continuous carbon fiber reinforced thermoplastic composites. In order to improve the mechanical properties of continuous carbon fiber reinforced polypropylene (CF/PP) thermoplastic resin based composites, this paper modified high melt index PP by adding maleic anhydride grafted polypropylene (PP-g-MAH) and aminated nano silica (SiO₂-NH₂). Continuous carbon fiber reinforced polypropylene thermoplastic resin based composites were prepared by melt impregnation and hot pressing. The results showed that the addition of PP-g-MAH and SiO₂-NH₂ increased the crystallinity of PP by 2.5%, the tensile strength by 4.8%, and the bending strength by 5.3%; the bending strength and interlayer shear strength of CF/PP composite materials were increased by 112.2% and 66.0%, respectively, to 543.7 MPa and 17.2 MPa.

Key words: continuous carbon fiber reinforced thermoplastic composite, polypropylene, mechanical property, aminoated silica nanoparticle, maleic anhydride grafted polypropylene

CLC Number:

TB332

WANG Haixu, SUN Jin, ZHAO Wei, SHI Zhentang, PAN Yuxi, LIU Cheng, JIAN Xigao. Synergistic enhancement of CF/PP composite materials by PP-g-MAH and aminated silica nanoparticles[J]. COMPOSITES SCIENCE AND ENGINEERING, 2025, 0(6): 41-47.

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