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A kind of pitch carbon fiber precursor melt spinning machine

A fiber precursor and spinning machine technology, applied in textiles and papermaking, separation methods, liquid degassing, etc., can solve problems such as limited effect, broken filaments, poor spinning stability, etc., to reduce interference, reduce defects, break silk less effect

Active Publication Date: 2019-05-17
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The traditional melt spinning machine sometimes has a devolatilization part in some components (such as the melting screw), but the effect is limited, and a large amount of pyrolysis yellow smoke appears at the spinneret hole, resulting in poor performance of the pitch fiber and its carbon fiber
Moreover, too much pyrolysis gas will lead to broken filaments in the spinning process, and the spinning stability is poor

Method used

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  • A kind of pitch carbon fiber precursor melt spinning machine
  • A kind of pitch carbon fiber precursor melt spinning machine

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] The overall flow chart of the equipment is in figure 1 middle. The specific implementation process is as follows:

[0022] The whole set of equipment is installed on two platforms, and the equipment is fixed in relevant positions by bolts. A melting screw 2 and a strainer 3 are installed on the first platform 7, and a feeder 1 is above the inlet and outlet of the melting screw. The feeder 1 is a device with a twin-screw structure, and a feeding funnel is installed above the inlet, and the solid asphalt powder with a particle size of less than 2mm falls into the feeding screw by gravity; The amount of feed adjusts the twin-screw speed. After the asphalt powder enters the melting screw, it is melted into a liquid under the action of heating and friction. The temperature of the melting screw increases gradually from the inlet to the outlet, and the highest temperature is about 350°C. The speed of the melting screw is controlled by a frequency conversion motor and a tran...

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Abstract

The invention relates to an asphalt carbon fiber precursor melt spinning machine, which basically comprises a feeder 1, a melting screw rod 2, a filter 3, a devolatilization device 4, a vacuum system5, a conveying screw rod 8, a booster pump 9, a metering pump10, a filter 11, and a spinning die head 12. The spinning machine has the characteristics of uniform material conveying, devolatilization strengthening and the like. The spinning machine can be used for continuously and stably spinning asphalt fibers, and is one of basic devices for preparing good-quality asphalt carbon fibers.

Description

technical field [0001] The present invention relates to a kind of melt-spinning machine that is used for the raw silk of pitch carbon fiber, exactly, use this spinning machine to spin spinning pitch to make pitch fiber (raw silk), and this pitch fiber can be finished after post-treatment The pitch carbon fiber is obtained, and the pitch fiber can be spun continuously and stably by using the spinning machine, which is one of the basic equipments for preparing high-quality pitch carbon fiber. technical background [0002] Carbon fiber has many advantages such as low density, high tensile strength and modulus, and has been more and more widely used in military and civilian high-tech fields. Pitch carbon fiber is an important variety of carbon fiber, which is made of pitch as raw material. [0003] Ordinary asphalt is made into carbon fiber through purification, modulation, spinning, non-melting and carbonization processes. Among them, spinning is carried out in the molten sta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D13/00B01D19/00
CPCB01D19/0021D01D13/00
Inventor 史景利马昌
Owner TIANJIN POLYTECHNIC UNIV
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