Development Of Centrifugal Spinning Machine And Study On Performance Of Fiber

Centrifugal spinning as a novel fiber spinning technology characterized with its high output,low power consumption and convenient operation is used to prepare fibers collected by ring collector,which is a result of circular distribution surrounding a spinneret of jet flow produced under the action of centrifugal force.However,it is objective to promote industrialization of centrifugal spinning by collecting fibers in ring distribution.In the study,it is revealed that the spinning trajectory traveled by PVB solvent falls off in the form of a spiral trace and PVB fibers move automatically forward the collector placed under the rotating spinneret.In the study,the two key factors including the development of a setup containing a planar collector to collect fibers and the control of the fibers' morphology are in discussions.Rational designs for both of the continuous feeding system and the continuous transport system are key technical issues for the design of the centrifugal spinning setup.A spinneret whose liquid storage chamber holds spinning solvent from the feeding system has been designed.And a planar conveyor is placed under the rotating spinneret to realize the continuous transport system.Six parameters containing the viscosity of PVB solvent,the temperature of PVB solvent,the structures of spinnerets,the diameters of orifices,the rotating speed and the height between orifices and the surface of the planar collector are adjusted to control the morphology of PVB fibers.It is found that 10wt% PVB solvent at 25? poured successively into the rotating spinneret whose speed is 6000 rpm is extruded out of the gradual construction orifices whose diameter is 0.2mm to be such a stable jet flow that the spinning trajectory traveled by jet flows falling off 50 mm in the form of a spiral trace from the orifices to the fiber-collecting surface under the action of gravity,which prepares a PVB fibers' web whose surface is neat and multifilament is obsolete.To explore the potential function of PVB fibers' web prepared by centrifugal spinning,several samples including the PVB fibers' web prepared by centrifugal spinning,the web produced by the PVB solvent treated with taltalite prepared by centrifugal spinning,the samples as a recombination of PVB fibers' web and PP non-woven fabrics and the samples treated with plasma have been under filtration tests.It is concluded that multi-level space structures of the PVB fibers' web prepared by centrifugal spinning and the existing stably charge in samples can raise filtration efficiency.