Research and development of strain rate materials based on solid waste and their application in personal protection
The work safety accidents ( such as fire and explosion) occasionally occur.The traditional impact resistant emer-gency rescue protective clothing uses the flexible fabric materials,but its protective effectiveness is poor and its large deforma-tion limits its widespread application.By modifying and surface grafting functional groups onto the industrial solid waste,a new type of green shear thickening functionalized bulletproof composite material was prepared to enhance its protection.The industrial solid waste such as ordinary sewage sludge particles and high-temperature alkali modified sludge particles were used for surface inerting modification as a shear thickening dispersed phase controlled green shear thickening solution.In order to better achieve the grafting loading of dispersed phase particles,the aramid fabric ( AF) was subjected to surface grafting mod-ification treatment.The bulletproof performance was tested by combining the solid waste based modified shear thickening solu-tion with the modified AF fabric.The results show that due to the addition of inert functional groups on the surface of solid waste,it has a more significant shear thickening effect.The yarn pull-out test showed that the tensile force increased by 2.8 times,indicating better friction performance.The ballistic test showed that the immersion in solid waste based shear thickening solution can increase the ballistic ultimate velocity ( V50 ) from 52 m/s to 98 m/s.The particle doping enhances the friction between yarns,and increases the load-bearing area of fabrics.The research results can provide reference for the design of high-performance soft body protective equipment,contribute to the resource utilization and value enhancement of solid waste,and offer a new solution to address the insufficient protective effectiveness of traditional protective clothing.
万方数据
维普
