Device and method for preparing carbon fiber/aramid hybrid fiber composite material

Abstract

The invention discloses a carbon fiber / aramid fiber hybrid fiber composite material preparation device and method. The method includes the steps that a first female die and a second female die are combined, fastened and heated; the interior of a die cavity composed of the first female die and the second female die is coated with a die releasing agent; carbon / aramid hybrid fiber prepreg is appliedto the surface of the die releasing agent; an isolating membrane and a ventilated felt are laid on the surface of the carbon / aramid hybrid fiber prepreg in sequence; a heated particle medium is fed into the die cavity; the particle medium is compacted; the die cavity is subjected to temperature rise; the die cavity is cooled and naturally cooled after forming is finished; the die cavity is naturally cooled to a second set range, and a pressure head is lifted; and the particle medium is taken out, the first female die is horizontally separated from the second female die, the isolating membraneand the ventilated felt are stripped off, and a carbon / aramid hybrid fiber finished product is obtained. By means of the method, the problem that the wettability between reinforced fibers and resins is insufficient can be solved, the good bonding degree between formed workpiece fibers and the resins is achieved, and the excellent mechanical property is formed.

Description

technical field [0001] The invention relates to the field of hybrid fiber preparation, in particular to a carbon fiber / aramid fiber hybrid material preparation device and method. Background technique [0002] Hybrid fiber reinforced composites can combine the advantages of different fibers and improve some properties of single fiber composites. Although Carbon Fiber Reinforced Polymer / Plastic (CFRP) has high modulus and high strength, it is brittle and poor in toughness, and its application is largely limited. However, aramid fiber has good toughness and strong local impact resistance. If aramid fiber is used to replace part of carbon fiber, a carbon fiber / aramid fiber hybrid composite material can be made, which can greatly improve the impact toughness of CFRP without losing other properties. . Experiments have proved that hybridization is a practical way to improve the toughness of CFRP. Since the interfacial bonding strength of carbon fiber / resin matrix is ​​higher tha...

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Problems solved by technology

[0009] The purpose of the present invention is to provide a carbon / aromatic hybrid fiber preparation device and method to solve the problem of insufficient wettability between the reinforcing fiber and the resin, so that the formed product fiber and resin have a good degree of bonding and form an excellent mechanical properties

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