On Preparation And Damping Modulation Mechanism Of The Hollow Fiber Mixed With Waste

Preparing the mixed solid waste damping materials into hollow fiber can effectively improve damping performance which provide new ways for further reducing cost of raw materials and the reuse of the solid waste.In this paper,solid wastes such as iron tailings sand or aluminum ash are separately blended into the preparation of new hollow fiber damping materials,through experimental exploration,a compatible and uniformly mixed casting film preparation technology characterized by micro-nano and solvent selection was obtained.By orthogonal experimental method,nitrile rubber was chosen as the host materials,aluminum ash and micro-nano iron tailings sand used as admixtures,the paper,it discussed the effects of solid waste content,casting solution concentration,pore diameter and wall thickness on the damping performance of mixed solid waste hollow fiber,and the parameter modulation mechanism which affects the hollow fiber damping performance;Through range analysis optimization of formulation,mixture is obtained and reversely,got the experimental confirmation.And change impact analysis is made for the previous two main factors according to optimization of formulation;On the basis of the above research,further damping performance was comparatively analyzed in the mixture with three different materials through experiment(NBR,HNBR and ACM);The orthogonal experimental method was used to explore the effect of host materials,casting solution concentration,inner core pore diameter and wall thickness on the damping performance of inner core increased hollow fiber which got from the glass fiber tube,meanwhile,the optimization of formulation is achieved and feedback the above two main factors.In order to grasp the self-damping characteristics of iron tailings sand in different states,a special test box was also prepared by using 3D printing technology.And got the damping performances of original iron tailings sand,water solvent nanometer milling ferrous mill tailing and DMAc solvent nanometer milling ferrous mill tailing by actual test.Through the above experimental research,the following main conclusions are drawn as following:(1)Through experimental result of FTIR spectrum and the mixture effect of the casting solution of the spinning fiber,it can be known that under the premise that main solvent is chosen for milling,adding micro-nano solid waste(median diameter 200nm)has no effect on the compatibility of NBR/PVC,HNBR/PVC,ACM/PVC systems,and the selecting of solid waste micro-nanometer and nano-meter milling solvent was the key technology to produce compatible and evenly mixed casting solution.(2)Through the orthogonal experimental analysis result of mixed aluminum ash hollow fiber damping materials,it can be learned the primary and secondary effects of aluminum ash content on the mixed aluminum hollow fiber damping performance is scasting solution concentration > pore size > aluminum ash content > wall thickness,and it can be known through experiment that the optimized solution is aluminum ash5%,casting solution concentration 18%,wall thickness 0.45 mm and pore diameter 0.9mm,and for the hollow fiber damping,the casting solution concentration prefers 18%to 20% and 22%,and the pore diameter prefers 0.9 mm to pore diameter 0.7 mm and1.2 mm.(3)Through orthogonal experimental analysis result of mixed micro-nano ferrous mill tailing hollow fiber damping materials,it can be known that the primary and secondary effects of micro-nano ferrous mill tailing content on the damping performance of mixed micro-nano ferrous mill tailing hollow fiber is casting solution concentration > pore diameter > micro-nano ferrous mill tailing content > wall thickness,and it is worth pointing out that the impact of micro-nano ferrous mill tailing content is also relatively high.Via experiment it can be known the optimized plan is micro-nano ferrous mill tailing sand 10%,casting solution concentration 18%,wall thickness 0.45 mm,pore diameter 0.9 mm,and the casting solution concentration prefers 18% to 20% and 22%,the pore diameter prefers 0.9 mm to 0.7 mm and 1.2mm.(4)It can be learned by comparing the three different host materials(NBR,HNBR and ACM)mixing respectively with aluminum ash,micro-nano ferrous mill tailing hollow fiber and flat sheet membrane damping performance,the damping performance of mixing the two solid waste hollow fiber is obviously higher than that of mixed the two solid waste flat sheet membrane,and again it proves preparing materials into hollow fiber can improve its damping value effectively.(5)Through orthogonal experimental analysis result of inner core enhanced hollow fiber damping materials impact factors it can be learned the primary and secondary effects is : different main materials > casting solution concentration > inner core pore diameter > wall thickness,via experimental verification the optimized solution was host materials ACM,casting solution concentration 22%,wall thickness0.45 mm,inner core materials diameter 1.0 mm,and the damping of inner core enhanced hollow fiber of host materials ACM is better than that of the host materials of NBR and HNBR.(6)It can be learned from the damping result measured by box sand test that the solid waste ferrous mill tailing has different damping spectrum and peak value itself under different condition,and the dimension of the particle will directly affect the performance of the damping;once the damping peak of micro-nano ferrous mill tailing increases slightly,then it can be the mix of damping materials.