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Needle-free electrostatic spinning polyimide nanofiber large-scale continuous manufacturing system

A nanofiber, polyimide technology, applied in fiber processing, textiles and papermaking, non-woven fabrics, etc., can solve the problem that polyimide nanofiber non-woven fabrics cannot be produced continuously, and self-supporting polymers cannot be produced continuously on a large scale. Nanofiber non-woven fabrics and other problems, to achieve the effect of a large range of options and improved quality

Active Publication Date: 2015-04-22
JIANGXI XIAN CAI NANOFIBERS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the existing needle-free and needle-free electrospinning equipment cannot be used for large-scale continuous production of self-supporting polymer nanofiber nonwovens with larger thickness and higher unit area weight, let alone for the production of self-supporting polymer nanofiber nonwovens. Supported polyimide nanofiber nonwovens, because this continuous production of polyimide nanofiber nonwovens equipment must also be equipped with high-temperature imidization equipment

Method used

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  • Needle-free electrostatic spinning polyimide nanofiber large-scale continuous manufacturing system
  • Needle-free electrostatic spinning polyimide nanofiber large-scale continuous manufacturing system
  • Needle-free electrostatic spinning polyimide nanofiber large-scale continuous manufacturing system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Example 1: Large-scale continuous weaving of polyimide nanofiber nonwovens

[0064] 1. Turn on the constant temperature and humidity system and the water shower absorption tower, set the temperature of the spinning workshop at 20-22°C, and set the humidity at 70-75%;

[0065] 2. Turn on the electric furnace (I), set the temperature to 190-200°C, and turn on the ventilation device, with a ventilation rate of 800L / min; turn on the high-temperature electric furnace, set the temperature to 350-360°C, and turn on the ventilation device of the high-temperature furnace, The ventilation rate is 2000L / min;

[0066] 3. Turn on the automatic material injection device, fill the liquid storage tank with spinning solution (560L of N,N-dimethylacetamide solution with a mass concentration of 20% PAA); the spinning solution is transported to The upper port of the material infiltration tube for steel wire electrospinning; turn on the high-voltage power supply, and set the voltage at 55k...

Embodiment 2

[0069] Embodiment Two: Large-scale continuous weaving of nylon 66 nanofiber nonwovens

[0070] The specific implementation steps are as follows:

[0071] 1. Turn on the constant temperature and humidity system and the water shower absorption tower, set the temperature of the spinning workshop at 20-22°C, and set the humidity at 70-75%;

[0072] 2. Turn on the electric heating furnace (I), set the temperature to 110-120°C, and turn on the ventilation device, with a ventilation rate of 800L / min; turn on the high electric heating furnace, set the temperature to 150-160°C, and turn on the high-temperature furnace ventilation device, The ventilation rate is 2000L / min;

[0073] 3. Open the automatic material injection device, the liquid storage tank is filled with spinning solution (mass concentration is 16% nylon 66 formic acid and the solution 440L of N-methylpyrrolidone (6 / 4) mixed solvent); The spinning solution is transported through the pipeline to the upper port of the mate...

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Abstract

The invention discloses a needle-free electrostatic spinning polyimide nanofiber large-scale continuous manufacturing system. The system is composed of a needle-free spinning portion, a thermotropic fiber adhesive portion, a high-temperature processing system, a solution steam recycling system, a constant-temperature constant-humidity system, a product conveying system and a non-woven cloth winding portion. The needle-free electrostatic spinning polyimide nanofiber large-scale continuous manufacturing system is suitable for quickly and continuously producing various kinds of polymer nanofiber containing polyimide and producing non-woven cloth made of the nanofiber on a large scale by upwards collecting the nanofiber. According to the continuous manufacturing system, as much as 4385 grams of polyimide nanofiber and 504 square meters of self-supporting polyimide nanofiber non-woven cloth which is 8.7 grams heavy per square meter are produced each hour.

Description

technical field [0001] The invention relates to a large-scale rapid continuous manufacturing equipment for needle-free electrospun polyimide nanofiber nonwoven fabrics, more specifically a large-scale continuous manufacturing system for needle-free electrospun polyimide nanofibers . Background technique [0002] With the continuous expansion of the application of electrospinning polymer nanofibers, a series of electrospinning equipment for preparing polymer nanofibers and their nonwovens have appeared on the market. These equipment are divided into two categories: high-voltage electrostatic needle spinning equipment and non-needle spinning equipment. The former mainly focuses on the preparation of polymer nanofiber experimental supplies, that is, the preparation of small laboratory supplies, and cannot be used for large-scale continuous production of self-supporting electrical appliances. Spinning polymer nanofiber nonwovens; the latter has a faster spinning speed and can b...

Claims

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Application Information

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IPC IPC(8): D04H3/009D04H3/03D04H3/14D01D5/00D01D1/06D01D5/08D01D10/06D01D7/00B08B1/00
CPCD01D5/0061D04H1/549D04H1/728
Inventor 侯豪情程楚云孔岐忠王琦周小平张铁忠
Owner JIANGXI XIAN CAI NANOFIBERS TECH