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Finishing kettle and supercritical carbon dioxide anhydrous modification device and method for aramid fibers

A carbon dioxide and aramid fiber technology, which is applied in the processing of textile material equipment configuration, textile material processing, and textile material container processing, can solve the problems of poor wetting performance and dyeing performance of aramid fiber, and achieve uniform modification Effect of finishing and improving wetting performance

Active Publication Date: 2017-06-06
泰和新材集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above problems, the present invention provides a device and method for supercritical carbon dioxide anhydrous modification of aramid fiber to solve the problem of poor wetting performance and dyeing performance of aramid fiber

Method used

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  • Finishing kettle and supercritical carbon dioxide anhydrous modification device and method for aramid fibers
  • Finishing kettle and supercritical carbon dioxide anhydrous modification device and method for aramid fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Under the action of the carbon dioxide heater 2, the carbon dioxide in the gas cylinder flows through the busbar, and is cooled by the condenser 3 to become a liquid carbon dioxide fluid, which is stored in the carbon dioxide storage tank 4 for use in the modification and finishing process. The carbon dioxide in the carbon dioxide storage tank 4 first flows through the precooler 5 to condense, and is injected into the system through the carbon dioxide booster pump 6 to complete the boosting process; then the heat exchanger is used to heat the carbon dioxide fluid to make it enter a supercritical state;

[0025] 500 kg of aramid 1313 fabric is wound on the perforated central tube 132 of the finishing unit. During the modification, the supercritical carbon dioxide fluid enters the carbon dioxide fluid inlet pipe 138 at the bottom of the finishing tank 13 and enters the finishing unit, and passes through the porous central pipe 132 to modify the aramid 1313 fabric. The sup...

Embodiment 2

[0029]Under the action of the carbon dioxide heater 2, the carbon dioxide in the gas cylinder flows through the busbar, and is cooled by the condenser 3 to become a liquid carbon dioxide fluid, which is stored in the carbon dioxide storage tank 4 for use in the modification and finishing process. The carbon dioxide in the carbon dioxide storage tank 4 first flows through the precooler 5 to condense, and is injected into the system through the carbon dioxide booster pump 6 to complete the boosting process; then the heat exchanger is used to heat the carbon dioxide fluid to make it enter a supercritical state;

[0030] Triazine type anti-ultraviolet finishing agent is placed in the finishing agent still 10, and its consumption is 3% of fabric weight. 500 kg of aramid 1313 fabric is wound on the perforated central tube 132 of the finishing unit. The finish pump 12 is switched off. Before the finishing process, first open the No. V15 valve at the bottom of the finishing kettle 13...

Embodiment 3

[0034] Under the action of the carbon dioxide heater 2, the carbon dioxide in the gas cylinder flows through the busbar, and is cooled by the condenser 3 to become a liquid carbon dioxide fluid, which is stored in the carbon dioxide storage tank 4 for use in the modification and finishing process. The carbon dioxide in the carbon dioxide storage tank 4 first flows through the precooler 5 to condense, and is injected into the system through the carbon dioxide booster pump 6 to complete the boosting process; then the heat exchanger is used to heat the carbon dioxide fluid to make it enter a supercritical state;

[0035] The non-ionic antistatic agent SN is placed in the liquid finishing agent tank 11, and its consumption is 2% of the weight of the fabric. 1000kg of aramid 1414 fabric is wound on the perforated central tube 132 of the finishing unit. Before sorting, first open the No. V15 valve at the bottom of the sorting kettle 13 to empty the air in the kettle body and pipelin...

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Abstract

The invention discloses a finishing kettle and a supercritical carbon dioxide anhydrous modification device and method for aramid fibers. An finishing unit inside the finishing kettle is cylindrical, and comprises a top seal cover, a bottom seal cover I and a bottom seal cover II in sequence from top to bottom, and the center of the top seal cover and the center of the bottom seal cover I are connected with a porous center tube; the bottom seal cover I and the bottom seal cover II form a mixing chamber, a carbon dioxide fluid inlet tube penetrates through the bottom seal cover I, enters the mixing chamber and is provided with a impeller stirrer at the tail end inside the mixing chamber, and an atomizer is arranged inside the impeller stirrer; a finishing agent inlet tube is connected to the carbon dioxide fluid inlet tube; an atomizing sprayer is arranged inside the finishing agent inlet tube. With the device, surface modification can be achieved for the aramid fibers; an atomizing finishing agent and supercritical carbon dioxide fluid are evenly mixed, so that functional modification processing is completed for the aramid fibers; meanwhile, with a gas-liquid separator, the liquefied finishing agent can be condensed and recovered, and finally anhydrous clean modification is achieved for the aramid fibers.

Description

technical field [0001] The invention relates to a modification method in the field of textile dyeing and finishing and composite materials, and more specifically relates to a finishing kettle and an aramid fiber supercritical carbon dioxide anhydrous modification finishing device and method. Background technique [0002] The full name of aramid fiber is aromatic polyamide fiber. In 1974, the U.S. Trade Federation (Federal TradeCommission) named them "Aramid fibers", which is defined as: at least 85% of the amide chain (-CONH-) is directly connected to the two phenyl rings. Aramid fibers have been widely used in protective materials, industrial filtration and aerospace fields due to their high strength, high thermal stability and low density. However, there are still some problems in the industrial production process of aramid fiber, which restricts its further application in the field of textile materials. On the one hand, due to the intermolecular hydrogen bonding of the ...

Claims

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Application Information

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IPC IPC(8): D06B23/18D06B9/02D06B9/06D06B23/20
CPCD06B9/02D06B9/06D06B23/18D06B23/20D06B23/205D06B19/00
Inventor 郑来久郑环达高世会闫俊张娟赵虹娟熊小庆苏耀华刘秒
Owner 泰和新材集团股份有限公司
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