Presented by:

Ali Aghaei Keyvan Naderi

Supervisor:

Dr. Dariush Semnani

Department of Textile Engineering, Isfahan University of Technology

Yarn Spinning from Electrospun Nanofibres

تولید نخ های نانو به

کمک

ابزار مکانیکی دینامیک

استفاده از حمام انعقاد

Advantages Simple mechanism. High production rate.

Disadvantages Bundled yarn. Liquid properties may cause arrangement difficulties. Manual collection. Lose the art of spinning

استفاده از حمام انعقاد دینامیک

Advantages High production rate.

Disadvantages Complicated mechanism. Bundled yarn. A few fibers do not stick tightly on the yarn. Manual collection.

(Core-spun) استفاده از جریانگردابی هوا

Advantages Tubular structure. Variety of applications.

Disadvantages Low production rate as nanofibers stick on the wall of the tube. Complicate mechanism and parameters. Yarn helix

جمع آوری نخ به کمک دیسک

Advantages No advantages.

Disadvantages Difficult to apply. Very low production rate. Most nanofibers stick on the wall of the first delivering disk. Yarn structure is unclear.

جمع آوری نخ با جمع کننده ترکیبی

Advantages Simple mechanism.

Disadvantages Entangled and unoriented nanofibers in the yarn body. Wet yarn. Yarn will stick on the surface of the collector.

تولید نخ های نانو به کمک

کنترل میدان الکتریکی

و

ابزار مکانیکی دینامیک

استفاده از الکترود های موازی

Advantages Simple mechanism. High production rate.

Disadvantages Difficult yarn collection. Inapplicable. Nanofibres may be suspend between the two electrode.

استفاده از الکترود های روی یک حلقه

Advantages Simple mechanism. High production rate.

Disadvantages Difficult yarn collection. Nanofibres may stick on the negative ring.

الکترود ثابت و چرخان

Advantages Simple mechanism. Ability to control the twist direction.Yarn structure with uniform helix. Nanofibres are aligned in the direction of the length of the yarn.

Disadvantages Yarn with limited length.

الکترود ثابت و چرخان

Advantages Simple mechanism. Ability to control the twist direction.Yarn structure with uniform helix. Nanofibres are aligned in the direction of the length of the yarn.

Disadvantages Yarn with limited length.

استفاده از سرنگ های با بار مخالف

Advantages Simple mechanism.

Disadvantages Difficult to apply. Entangled and unoriented nanofibres in the yarn body. Curly yarn structure. Manual yarn collection. Difficult yarn extraction.

الکترود های متغیر با زمان

Advantages Ability to control the twist direction.

Disadvantages Complicate mechanism. Manual yarn collection. Low production rate.

الکترود ثابت و چرخان

Advantages Simple mechanism. Ability to control the twist direction. Continuous yarn. Yarn structure with uniform helix. Nanofibres are aligned in the direction of the length of the yarn.

Disadvantages Aligned nanofibres collected instead of Yarn. Random jet suspension.

کنترل میدان الکتریکی با میله متصل به زمین

Advantages Continuous yarn. Ability to control the twist direction. Yarn structure with uniform helix. Nanofibres are aligned in the direction of the length of the yarn.

Disadvantages Complicate mechanism. Low production rate as most nanofibres stick on the negative surface.

Advantages No advantages.

Disadvantages Complicate mechanism. First manual help. Random jet suspension. Difficult yarn extraction. Difficult to apply, when it was tried.Entangled and unoriented nanofibres in the yarn body.

کنترل میدان الکتریکی با میله متصل به زمین

دیسک های چرخان در دو محور

Core spinning Using Nanofibres