Abstract
Glass fiber(GF)has been widely used due to its advantages of high tensile strength,high Young's modulus,good high temperature resistance and low cost.However,with the rapid development of high-tech fields like information technology,space technology and new energy technology,the electrical and magnetic properties of materials have become particularly important,but the non-conductive characteristics of glass fiber greatly limit its application in emerging technologies.As materials of great concerns in the new century,carbon nano-materials have excellent electrical and magnetic properties,as well as outstanding optical and mechanical properties.Therefore,the preparation of highly conductive carbon layers on the self-insulating glass fiber surface can not only make it have specific functions,but also further broaden the application field of glass fiber reinforced composite materials.In recent years,researchers have engaged in a great deal of research work on this topic,exploring various aspects comprehensively.In this paper,the latest research on carbon-based coatings(carbon nano-particle layer,carbon nanotube layer,graphene and its derivatives)on the surface of glass fiber and graphene-skinned glass fiber are systematically and comprehensively reviewed.In terms of coating preparation methods,the impregnation method that can achieve large area coating,the spray method that can achieve quick and efficient coating using the spray gun,the pyrolysis method that can obtain carbon-based coating through decomposing raw materials containing carbon,the electrostatic adsorption method that can achieve carbon adsorption by electrostatic interactions,the electrodeposition method that can achieve precise control of coating thickness by electric field,the chemical vapor deposition method that can achieve precise growth of the carbon layer in high temperature and gas environments are introduced.According to the mechanism of coating formation,the bonding of physical adsorption based on the intermolecular force,the action mechanism of chemical grafting through chemical bond,and the stability principle of mechanical anchoring with the help of microstructure fixation are deeply analyzed.In terms of coating conductivity,the variation of key parameters such as conductivity,resistivity and resistance of glass fiber and their reinforcing materials and influencing factors are studied in detail.In terms of application,it comprehensively reviews its application achievements in structural health inspection by using resistance changes in structural testing,effectively resisting electromagnetic interference in electromagnetic shielding,ensuring safe and stable operation of equipment via using electrothermal deicing,and realizing efficient transformation of green energy in energy harvesting.At the same time,the influence mechanism of coating uniformity,thickness and doping on conductivity is discussed.The comprehensive analysis shows that carbon-based conductive glass fiber still faces many bottleneck problems in large-scale production and practical application,such as high preparation cost,low production efficiency,poor product quality stability and so on.This paper puts forward a series of targeted solutions to these problems,including optimizing the preparation process to reduce costs,developing new equipment to improve production efficiency,exploring new material combinations to improve product quality stability and multi-functionality,etc.At the same time,the future application prospects of carbon-based conductive coatings on glass fiber surfaces in emerging fields are prospected in depth,and further research directions are made clear,aiming at promoting the continuous innovation and development of this field,meeting the growing urgent demand for high-performance materials in high-tech.关键词
玻璃纤维/碳纳米颗粒/碳纳米管/石墨烯/蒙烯玻璃纤维/导电性/复合材料Key words
glass fiber/carbon nanoparticle/carbon nanotube/graphene/graphene-skinned glass fiber/electrical conductivity/composite分类
通用工业技术
