Conductive epoxy resin for modified carbon fiber composite laminated board

Abstract

The invention relates to a conductive epoxy resin for a modified carbon fiber composite laminated board. The conductive epoxy resin comprises the following components: epoxy resin E-51, a carbon nanotube, diamino diphenyl sulfone (DDS), boron trifluoride ethylamine (BF3-400), Carbomer 941, glycol ether, a defoaming agent 5120 and conductive silver powder Ag-S1. In the conductive epoxy resin for the modified carbon fiber composite laminated board provided by the invention, the conductive silver powder is taken as the main conductive filler and the insulating epoxy resin is modified, so that the conductivity and the mechanical property can be promoted. The laminated board prepared from the conductive epoxy resin and the carbon fibers can be applied to the field of lightning protection.

Description

technical field [0001] The invention relates to a conductive epoxy resin material and a preparation method for modified carbon fiber composite material laminates. Background technique [0002] Lightning is a natural phenomenon in the atmosphere. When the electric field strength between the clouds or between the clouds and the bottom surface reaches the order of 1000kv / m, the atmosphere will be ionized to form a conductive plasma flow, thereby generating plasma that releases and neutralizes the charge The conductive channel of the body, the current on the channel is huge, and the temperature is extremely high, which makes the air flow expand instantly, producing bright and dazzling lightning and deafening thunder. Aircraft flying in thunderstorm weather, the possibility of being struck by lightning is unavoidable. According to statistics, there are no less than 100 incidents of lightning hitting airplanes every year. The conductivity of carbon fiber / epoxy resin composite lam...

AI Technical Summary

Problems solved by technology

The conductivity of carbon fiber / epoxy resin composite laminates is mainly determined by carbon fibers with high conductivity, while the resin matrix that plays a role in wrapping and supporting is insulated and non-conductive, making the conductivity of carbon fiber composites far from that of traditional metals. Lightning damage to it includes high-temperature ablation pyrolysis of resin, fiber breakage, and delamination damage caused by the shock wave effect. These damages reduce the mechanical properties of the structure and cause incalculable consequences for flight safety.

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