Carbon fiber composite core composition and method for preparing carbon fiber composite core

Abstract

The invention relates to an electric lead, in particular to a carbon fiber composite core composition and a method for preparing a carbon fiber composite core. The composition comprises high-temperature epoxy resin, a curing agent, an accelerant and carbon fiber. The preparation method comprises the following steps that: the carbon fiber enters a coupling agent sprayer by a creel through a yarn-guide mechanism and a tension control mechanism; a tension controller adjusts the tension; a high-pressure spray head is arranged in the coupling agent sprayer to spray a foggy solvent; the fiber enters a vacuum injection pre-soaking device through the coupling agent sprayer to soak a high-temperature epoxy resin adhesive and then enters a heating molding mould to be cured and molded; the molding mould is divided into three areas for heating, and the three areas are a preheating area, a gelling area and a curing area respectively; the fiber is cured again by a drying cylinder after being cured; and the whole process is continuously driven by a hydraulic driving machine. Compared with the conventional lead, a carbon composite core lead has the advantages of light weight, high strength, low line loss, small sag, high temperature resistance, corrosion resistance, environmental friendliness and the like, and achieves the energy conservation, environmental protection and security of power transmission. The carbon fiber composite core composition and the method for preparing the carbon fiber composite core are widely applied to overhead power lines.

Description

technical field

[0001] The invention relates to an electric wire, in particular to a carbon fiber composite core composition and a preparation method for the carbon fiber composite core. Background technique

[0002] The existing electric wire is a steel-cored aluminum-hinged wire, and the steel-cored aluminum-hinged wire has the following defects: ① low strength. ②The electrical conductivity is low, the current carrying capacity is small, and there are magnetic losses and thermal effects caused by the steel wire material during the operation of the wire, and the operating temperature is high. ③The coefficient of linear expansion is large and the strength is high. When the temperature of the steel-cored-aluminum hinge wire rises from 26°C to 183°C. Strength increased from 236mm to 1422mm. Increased by 35 times. ④ heavy weight. ⑤ Not resistant to corrosion, there is a problem of galvanic corrosion between the aluminum wire and the galvanized steel wire when the convention...