CN102826537A

CN102826537A - Preparation device for CNT (carbon nano tube) fiber with high strength

Info

Publication number: CN102826537A
Application number: CN2012103323458A
Authority: CN
Inventors: 安树林; 王文一; 杨兴胜
Original assignee: Tianjin Polytechnic University
Current assignee: Tianjin Polytechnic University
Priority date: 2012-09-11
Filing date: 2012-09-11
Publication date: 2012-12-19

Abstract

The invention relates to the technology of manufacturing equipment for a CNT (carbon nano tube) fiber, in particular designs a device capable of improving the strength of a meshed as-spun carbon tube fiber. The device comprises a vertical tube type reactor, a water seal tank, a false twister, a godet roller, a coiler and a circulating water pump. The device is characterized in that the false twister is of a conical hopper which has a fiber hanging gap and is provided with a rotary water wheel; the false twister is mounted in water of the water seal tank; and the upper end of the conical hopper faces an outlet of the vertical tube type reactor, so that the false twisting processing of the meshed as-spun carbon tube fiber can be carried out, so as to enhance the cohesion of the meshed carbon tube fiber and improve the strength of the obtained as-spun fiber. Therefore, the postprocessing on the as-spun fiber can be conducted further. The device is capable of preparing even and continuous carbon tube fibers with high strength..

Description

A kind of preparation facilities of HS carbon nano-tube fibre

Technical field

The present invention relates to the producing apparatus technology of carbon nano-tube fibre; Be specially and designed a kind of conical hopper formula scroll tube; In preparation carbon nano-tube fibre process, network-like nascent carbon nano-tube fibre is carried out false twisting processing, to strengthen its cohesive force; Make the fibrous texture densification, prepare the HS carbon nano-tube fibre.

Background technology

With the hydrocarbon liquid that contains metal catalyst as carbon source; Be injected in the high temperature riser reactor; Under certain condition, carbon nanotubes grown forms the network-like carbon pipe of successive aggregation fiber in air-flow, how to improve the intensity that these network-like carbon pipes gather the nascent fibre of formation; From the high-temperature reactor of sealing, drawing smoothly, is one of technological difficulties of the even successive high strength carbon pipe fiber of preparation can bear further aftertreatment.

Summary of the invention

To the deficiency of prior art, the technical problem that the present invention will solve is to design a kind of device that can improve network-like nascent carbon pipe fibre strength; It is made up of riser reactor, water sealed tank, scroll tube, godet roller, up-coiler and water circulating pump, and it is characterized by scroll tube is a conical hopper that has extension silk gap, and it is installed in the water in the water sealed tank; The upper end of conical hopper faces the outlet of riser reactor; Network-like nascent carbon pipe fiber is carried out false twisting processing, and purpose is the obvolvent that strengthens network-like carbon pipe fiber, improves the intensity of its nascent fibre; Can bear further aftertreatment, prepare even successive high strength carbon pipe fiber.The method of conical hopper rotation can be employed in install on the vertical tube of funnel water wheels to promote its rotation, with its speed of rotation of flow velocity control by the current of the rising pipe of water circulating pump; Perhaps be employed in the outer bottom of water sealed tank phonomoter is installed, make its rotation through transmission shaft.

The ultimate principle of false twisting processing is: when yarn was twisted, yarn had the difference that S twists with the fingers and Z twists with the fingers; When the yarn two ends are fixed, during the bolster rotation, the twisting effect can take place in the bolster yarn at two ends up and down, and twists with the fingers on the contrary, and number of twists equates; When the yarn that constantly moves was downwards twisted, backtwisting took place at output terminal in the turn of input bolster immediately, and therefore this twisting mode can not obtain the real twist, so claim " false twisting ", bolster is also referred to as scroll tube.

Apparatus of the present invention add man-hour carrying out false twisting; At first will from riser reactor, get into inboard in the outside of conical hopper through hanging the silk gap by fallen network-like carbon pipe aggregation fiber; Flow out from the conical hopper pipe core again, when conical hopper rotates, the and then rotation of loose carbon pipe aggregation fiber in the riser reactor; Promptly it has been carried out twisting processing; Loose carbon pipe aggregation fiber receives twisting and does the time spent, and densification will take place structure, and the intensity of fiber will improve constantly along with the increase of the twist.Though backtwisting takes place again the fiber at the conical hopper outgoing side, these fibers do not obtain the real twist, and the purpose that the intensity of fiber is greatly improved has reached.

Description of drawings

Fig. 1 is the preparation facilities synoptic diagram of HS carbon nano-tube fibre;

Fig. 2 is a false twisting principle of work synoptic diagram;

Fig. 3 is the principle of work synoptic diagram of conical hopper;

Fig. 4 is the extension silk gap synoptic diagram on the conical hopper;

Fig. 5 is a rotary turbine structural representation on the conical hopper.

Embodiment

Further narrate the present invention below in conjunction with embodiment and accompanying drawing thereof.Specific embodiment does not constitute the restriction to claim of the present invention just in order further to clearly demonstrate high strength carbon nanotube fiber production device of the present invention.

High strength carbon nanotube fiber production device of the present invention is made up of vertical response pipe 1, water sealed tank 2, conical hopper formula scroll tube 3, godet roller 4, godet roller 5, up-coiler 6 and water circulating pump 7, and is as shown in Figure 1.When yarn was twisted, different twist direction yarns can obtain that S twists with the fingers or Z twists with the fingers, as (a) among Fig. 2 (b) shown in; To one section two ends fixed yarn, rotation in the middle made from a bolster, the phenomenon shown in Fig. 2 (c) can take place: the number of twists of bolster yarn twisting up and down equates, twists with the fingers on the contrary; Concerning the yarn that is moving from top to bottom, at the sth. made by twisting that the bolster upper end adds, taken off in the bolster lower end, in fact the yarn of output terminal can not get the real twist, shown in Fig. 2 (d).Bolster is a kind of form in the scroll tube.Scroll tube of the present invention is the conical hopper formula, and is as shown in Figure 3.Extension silk gap on the conical hopper is smooth, when guaranteeing that fiber is not worn, also will hang to such an extent that live, and its structural representation is as shown in Figure 4.On the vertical tube of conical hopper water wheels are installed, are relied on the current of the rising pipe of water circulating pump to promote the water wheels rotation, the structural representation of water wheels, as shown in Figure 5.

During preparation HS carbon nano-tube fibre; The network-like carbon pipe of the successive aggregation fiber that in high temperature riser reactor 1, forms gets into inboard in the outside of conical hopper 3 through hanging the silk gap; Flow out from the conical hopper pipe core, the conical hopper 3 of rotation is with its upper end fiber again, and the network-like carbon pipe of the successive aggregation fiber that promptly forms in the high temperature riser reactor 1 is twisted processing; The twist of appropriateness makes loose network-like fiber generation densification; Intensity is improved accordingly, exports to up-coiler through godet roller again and is wound into tube, obtains the HS carbon nano-tube fibre.

The present invention does not address part and is applicable to prior art.

Claims

1. the preparation facilities of a HS carbon nano-tube fibre comprises riser reactor, water sealed tank, scroll tube, godet roller, up-coiler and water circulating pump composition.

2. the scroll tube of the preparation facilities of HS carbon nano-tube fibre according to claim 1 is the conical hopper of hanging the silk gap that has in the water that is installed in the water sealed tank; The upper end of conical hopper faces the outlet of riser reactor, and the conical hopper of rotation can carry out false twisting processing to network-like nascent carbon pipe fiber.

3. perpendicular water wheels are housed on the vertical tube of conical hopper according to claim 2; The current of a rising pipe of water circulating pump promote its rotation; And with the speed of rotation of flow velocity control conical hopper, thereby controlled the twisting twist in twisting stage in the false-twisted process.

4. the preparation facilities of HS carbon nano-tube fibre according to claim 1 can make loose nascent carbon pipe aggregation fiber receive twisting and do the time spent, structure generation densification, and the intensity of fiber will improve constantly along with the increase of the twist.