Phthalonitrile-carbon fiber composites produced by vacuum infusion processстатья

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[1] Phthalonitrile-carbon fiber composites produced by vacuum infusion process / B. Bulgakov, A. Sulimov, A. Babkin et al. // Journal of Composite Materials. — 2017. High-temperature carbon fiber-reinforced plastics based on phthalonitrile resins are obtained for the first time by vacuum infusion process. For this purpose, formulations based on low-melting bis(3-(3,4-dicyanophenoxy)phenyl) phenyl phosphate monomer in combination with 1,3-bis(3,4-dicyanophenoxy)benzene and 4-[3-(prop-2-yn-1-yloxy)phenoxy]benzene-1,2-dicarbonitrile were developed. Resin viscosities Z 600 mPas were suitable for VIP and at the same time the thermal and mechanical properties of the cured matrices were in high level featured to phthalonitriles (HDT  420C, E  5.1 GPa). CFRP samples were manufactured by vacuum infusion process with carbon fabric and demonstrated thermal stability over 400C and a change of mechanical properties by less than 10% at 300C. Present results sufficiently extend the application field of phthalonitriles as matrices for complex-shape high temperature composite parts in aerospace or high-temperature composite tooling for PEEK-like thermoplastics processing. [ DOI ]

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