نتایج جستجو برای: end spinning process
تعداد نتایج: 1661541 فیلتر نتایج به سال:
Abstract Lateral compact spinning with pneumatic groove is a process to gather fibers by common actions of airflow and mechanical forces. Compared ring spinning, it can more effectively reduce yarn hairiness enhance strength. However, fiber motion in the agglomeration area complex. And, important establish new model accurately describing motion. The objectives this research were create simulate...
The objective of this work is to investigate, design, and synthesize molecular spinning machines that can be shaped in the form of membranes which can control fiber structures and produce nanofibers. Using this design entire spinning units and associated systems, which currently occupy two or three floors, can be made to fit in a small room. Fibers with custom designed structures and properties...
A slender 1{D model for laments of liquid crystalline polymers (LCPs) is applied to simulate isothermal ber spinning of materials with internal orientation. The model and predictions focus on the hydrodynamic{orientation interactions in spinning ows, isolated from other signi cant spinline e ects of temperature, crystallization and phase changes. An important practical feature of the model is t...
Nan-fiber scaffolds are suitable tools for tissue engineering. Electro spinning materials together with cells presents not adequate to obtain a high cellular zing tissue constructs as the shear force, tensile force, and other physical effects excited in the electro spinning process, which are harmful to cellular differentiation, development and function. However, this limitation has been overco...
The bulk production of polymeric nanofibers is important for fabricating high-performance, nanoscale materials. Rotary jet spinning (RJS) enables the mass production of nanostructured fibers by centrifugal forces but may result in inconsistent surface morphologies. Because nanofiber performance is dependent upon its surface features, we asked which parameters must be optimized during production...
in this article using comparative multi-purpose algorithm of pso, optimum capacity of new resources and their spinning storage is defined. spinning reserve requirements and optimized to maximize profit per unit is determined according to uncertainty. in fact by increasing the level of cost reservation, power supply increases but penalty of blackout decreases. in this paper in has been tried to ...
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Pliable and water-resistant protein fibers from feathers were developed via continuous one-step spinning crosslinking using sucrose-tetra-aldehydes. Though flexible developed, poor wet stability low tenacity still limit the large high-end applications of feather-derived fibers. Despite that saccharide aldehydes are considered as an efficient sustainable crosslinker, substantial concerns such ge...
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