A large-scale continuous weaving system for high-voltage electrostatic needle spinning polyimide nanofibers

A technology of nanofibers and polyimides, applied in the fields of fiber chemical characteristics, textiles and papermaking, textile/flexible product manufacturing, etc.

Active Publication Date: 2016-09-14
JIANGXI ADVANCED NANOFIBER S&T CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The large-scale continuous electrospinning system solves the following problems in the industrialization of electrospinning: (1) It solves the problem of large-scale continuous preparation of self-supporting electrospun nanofiber nonwovens, and realizes the first non-woven fabric of polymer nanofibers. Continuous large-scale production of woven fabrics; (2) solves the problem of isolating the spinning solution from the atmosphere before forming a jet, and keeps the spinning solution stable during the long spinning process; (3) uses high temperature resistant metal ( The imidization process requires high temperature) The conveyor belt runs on the guide roller below the nozzle as a movable collector for nanofibers, always keeps the upper surface of the receiver at the same level, and always keeps the electric field strength of the upper surface of the receiver consistent, avoiding upward Drooping arcs in equipment receiving nanofibers due to long-distance suspension of bulky receivers

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • A large-scale continuous weaving system for high-voltage electrostatic needle spinning polyimide nanofibers
  • A large-scale continuous weaving system for high-voltage electrostatic needle spinning polyimide nanofibers
  • A large-scale continuous weaving system for high-voltage electrostatic needle spinning polyimide nanofibers

Examples

Experimental program
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Effect test

Embodiment 1

[0052] Example 1: Large-scale continuous weaving of polyimide nanofiber nonwovens

[0053] In this example, the spinning part is equipped with a space length of 20m and a width of 1.5m; the spinning part is equipped with 40 spinning modules, each module is 0.15m in width and 1.0m in length, and the interval between modules is 0.25m; The module is equipped with 30 5-needle nozzles; 40 spinning modules share a 250-liter spinning liquid storage tank and a set of flow control system; the circular conveyor belt in the product delivery system has a circumference of 92m and a width of 1.2m; the high-temperature electric furnace is 15m long , the width is 1.5m; the length of the winding part (including the transmission part) is 4.0m. The whole weaving system has a total length of 45.0 meters. The spinning part is equipped with a space length of 18m and a width of 1.5m. The specific implementation steps are as follows:

[0054] 1. Turn on the constant temperature and humidity system...

Embodiment 2

[0059] Embodiment Two: Large-scale continuous weaving of nylon 66 nanofiber nonwovens

[0060] In this example, the spinning part is equipped with a space length of 20m and a width of 1.5m; the spinning part is equipped with 40 spinning modules, each module is 0.15m in width and 1.0m in length, and the interval between modules is 0.25m; The module is equipped with 30 5-needle nozzles; 40 spinning modules share a 250-liter spinning liquid storage tank and a set of flow control system; the circular conveyor belt in the product delivery system has a circumference of 92m and a width of 1.2m; the high-temperature electric furnace is 15m long , the width is 1.5m; the length of the winding part (including the transmission part) is 4.0m. The whole weaving system has a total length of 45.0 meters. The spinning part is equipped with a space length of 18m and a width of 1.5m. The specific implementation steps are as follows:

[0061] 1. Turn on the constant temperature and humidity sy...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention discloses a large-scale continuous weaving system for high-voltage static knitting polyimide nanofibers. The system is composed of a static spinning part, a high-temperature processing part, a solvent vapor recovery system, a constant temperature and humidity control system, a product delivery system and a diaphragm winding part. The system can be used for continuously producing polyimide nanofiber non-woven fabric and other polymer nanofiber non-woven fabric on a large scale. Polyimide nanofibers produced by the large-scale continuous weaving system per hour reach up to 4385 grams, and produced self-supporting polyimide nanofiber non-woven fabric which is 8.7 grams each square meter is 504 square meters.

Description

technical field [0001] The invention relates to a large-scale manufacturing system of high-voltage electrostatic needle-spun polyimide nanofiber and its nonwoven fabric Background technique [0002] With the continuous expansion of the application of electrospun polymer nanofibers, a series of laboratory equipment for preparing polymer nanofibers by electrospinning has appeared on the market. These equipment mainly focus on the preparation of polymer nanofiber experimental supplies, that is, laboratory The preparation of small articles, but it cannot be used for large-scale continuous production of self-supporting electrospun polymer nanofiber nonwovens, especially it cannot be used for large-scale continuous production of self-supporting polyimide nanofiber nonwovens. The present invention carries out system design for the production process of polyimide fiber product, combines polyimide prepolymer (polyamic acid PAA) nanofiber or its nonwoven fabric preparation, polyamic a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/728D04H1/4334D01F13/04D06C7/00D01D5/00
CPCD01D5/00D01F13/04D04H1/4334D04H1/728D06C7/00Y02P70/62
Inventor 侯豪情程楚云孔岐忠王琦周小平张铁忠
Owner JIANGXI ADVANCED NANOFIBER S&T CO LTD
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