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Screw pump stator for preparing polyacrylonitrile matrix

A technology of polyacrylonitrile and pump stator, which is applied in the field of spinning, which can solve the problems of reducing the service life of the stator, polluting the polyacrylonitrile stock solution, and affecting the quality of fiber precursors, so as to achieve the effect of increasing the service life and not being easily broken and deformed

Inactive Publication Date: 2017-05-31
HARBIN TIANSHUN CHEM TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing spinning process, the polyacrylonitrile stock solution is mostly transmitted by a gear pump. In the prior art, fluorine rubber, nitrile rubber, EPDM rubber or natural rubber are mostly used to prepare the bushing (stator), but the above materials None of the prepared stators can be used for the delivery of DMSO solvent. They are compatible with the polyacrylonitrile solution DMSO, which will seriously damage the stator, pollute the polyacrylonitrile stock solution, affect the quality of the fiber precursor, and reduce the service life of the stator. The application of screw pump in the transmission of polyacrylonitrile stock solution in spinning process

Method used

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  • Screw pump stator for preparing polyacrylonitrile matrix
  • Screw pump stator for preparing polyacrylonitrile matrix
  • Screw pump stator for preparing polyacrylonitrile matrix

Examples

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Embodiment 1

[0023] This embodiment provides a screw pump stator for making polyacrylonitrile stock solution, comprising a stator core 1 and a metal sleeve 2; the stator core 1 is installed inside the metal sleeve; the stator core 1 is made of organic silicon It is prepared by compounding with carbon fiber according to the mass ratio of 5:1; the length of the carbon fiber is 3mm.

[0024] Organosilicon composite material process: Silicone and carbon fiber are chopped, mixed and ground, and then vulcanized at a high temperature; the high temperature vulcanization temperature is 100°C-140°C.

Embodiment 2

[0026] This embodiment provides a screw pump stator for making polyacrylonitrile stock solution, including a stator core 1 and a metal sleeve 2; the stator core 1 is installed inside the metal sleeve; the stator core 1 is made of organic silicon and The carbon fiber is prepared by compounding according to the mass ratio of 12:1; the length of the carbon fiber is 10mm.

[0027] Organosilicon composite material process: Silicone and carbon fiber are chopped, mixed and ground, and then vulcanized at a high temperature; the high temperature vulcanization temperature is 100°C-140°C.

Embodiment 3

[0029] This embodiment provides a screw pump stator for making polyacrylonitrile stock solution, comprising a stator core 1 and a metal sleeve 2; the stator core 1 is installed inside the metal sleeve; the stator core 1 is made of organic silicon It is prepared by compounding with carbon fiber according to the mass ratio of 7:1; the length of the carbon fiber is 5mm.

[0030] Organosilicon composite material process: Silicone and carbon fiber are chopped, mixed and ground, and then vulcanized at a high temperature; the high temperature vulcanization temperature is 100°C-140°C.

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Abstract

The invention discloses a screw pump stator for preparing polyacrylonitrile matrix and belongs to the technical field of spinning. The screw pump stator comprises a stator core and a metal sleeve. The stator core is arranged in the metal sleeve. The stator core is made of organosilicone composite materials. The prepared screw pump stator is not dissolved in DMSO and can bear corrosion of a high-corrosivity solvent during processing, the service life of the stator is prolonged, the screw pump stator can be used for conveying the polyacrylonitrile matrix among working procedures in the carbon fiber preparing process and is not prone to breaking or deforming, and the situation that impurities disengaging from the stator core in a layered manner due to external force are mixed into the polyacrylonitrile matrix is avoided.

Description

technical field [0001] The invention relates to a screw pump stator used for making polyacrylonitrile stock solution, and belongs to the technical field of spinning. Background technique [0002] The screw pump is a positive displacement rotor pump, which relies on the volume change of the sealed cavity formed by the screw (rotor) and the bush (stator) to suck and discharge liquid. It is characterized by stable flow, small pressure pulsation, self-priming ability, low noise, high efficiency, long life and reliable operation, and its outstanding feature is that no eddy current is formed when transmitting the medium, it is not sensitive to the viscosity of the medium, and can be transported High viscosity media. In the existing spinning process, the polyacrylonitrile stock solution is mostly transmitted by a gear pump. In the prior art, fluorine rubber, nitrile rubber, EPDM rubber or natural rubber are mostly used to prepare the bushing (stator), but the above materials None...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C2/107C08L83/04C08K7/06
CPCF04C2/1075C08K7/06C08K2201/004F04C2240/10F04C2240/802C08L83/04
Inventor 孟凡钧孟子顺张会
Owner HARBIN TIANSHUN CHEM TECH DEV CO LTD
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