Improving Surface Properties of Carbon Fiber Rein-forced Plastic by Epoxy Primer with Plasma Treatment

摘要

In the global automobile industry,the importance of technology for improving fuel efficiency is becoming increasingly important to control greenhouse gas emissions,strengthen environmental regulations,and respond to automobile fuel economy regulations.Fuel efficiency improvement technology is emerging as a key technology that determines the competitiveness of the automotive market in the future.The most efficient method for improving fuel efficiency in vehicles is weight reduction,but engine efficiency improvement has already been studied and there are many technical limitations.Therefore,weight reduction is becoming increasingly important in the automotive industry.Carbon fiber reinforced plastics(CFRPs)are used in various fields,including the aviation and automotive industries.The greatest advantages of CFRP materials are their light weight,high strength,corrosion resistance,and high rigidity.Due to high cost,production processing issues,and restricted functionality,CFRP should be used with steel or other dissimilar materials.Existing physical joining methods,such as riveting,bolting,and punching,are unsuitable for fiber-reinforced plastics(FRPs).Because FRP comprises multiple layers,it is prone to cracking around such physical joints,which causes significant damage to the substrate owing to propagation of these cracks.Proper pretreatment of a surface is necessary to improve adhesion performance.Pretreatment includes methods of removing surface contaminants,removing oxidized layers,improving wettability,chemical modification,and changing the surface roughness.