Supercritical CO2 fluid flash explosion treatment method of natural fibers and products of natural fibers

A technology of natural fibers and treatment methods, which is applied in the field of flash explosion treatment of natural fibers and their products with a supercritical CO2 fluid, can solve the problems of less research on natural fiber modification, and achieve improved dyeing and finishing processing and dyeing performance Improved, easy-to-operate effect

Pending Publication Date: 2020-08-25
山东出彩无水纤染高科有限公司 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, there are few studies on the application of supercritical fluids to modify natural fibers at home and abroad.

Method used

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  • Supercritical CO2 fluid flash explosion treatment method of natural fibers and products of natural fibers
  • Supercritical CO2 fluid flash explosion treatment method of natural fibers and products of natural fibers
  • Supercritical CO2 fluid flash explosion treatment method of natural fibers and products of natural fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] A certain amount of pure cotton fiber is subjected to flash explosion treatment. Place the sample in the fluid flash handling unit and close the system. Turn on the heating device, control the modification temperature at 100°C, and then introduce CO into the device 2 , the modification treatment pressure was controlled at 15MPa, and the modification treatment time was 30 min. According to the degree of flash explosion and requirements, the system parameters of the separation and recovery unit, such as temperature and pressure, are controlled at 20°C and 5 MPa. Then open the shut-off valve to quickly release the air, and the pressure relief time, that is, the flash explosion time is 8 s; then use an electron microscope to observe the changes in the surface morphology of the fiber before and after the fluid flash explosion, and the results are as follows Figure 3-Figure 6 shown.

[0059] image 3 , Figure 4 It is the original electron microscope picture of cotton f...

Embodiment 2

[0062] A certain amount of pure wool fiber is subjected to flash explosion treatment. Place the sample in the flash explosion treatment unit and close the system. Turn on the heating device, control the modification temperature at 100°C, and then introduce CO into the device 2 , the control modification treatment pressure is 15MPa, and the modification treatment time is 30 min. According to the degree of flash explosion and requirements, the system parameters of the separation and recovery unit, such as temperature and pressure, are controlled at 20°C and 5 MPa. Then open the stop valve to quickly deflate, the pressure relief time is 8s; then use the cold field electron microscope to observe the change of its surface morphology before and after the fluid flash, the results are as follows Figure 7-Figure 9 shown.

[0063] Figure 7 This is the original electron micrograph of the wool fiber under the scanning electron microscope. It can be seen that when the wool fiber has ...

Embodiment 3

[0066] A certain amount of wool fabric is subjected to flash explosion treatment. Place the sample in the processing unit and close the system. Turn on the heating device, control the modification temperature at 100°C, and then introduce CO into the device 2 , the control modification treatment pressure is 15 MPa, and the modification treatment time is 30 min. According to the degree of flash explosion and requirements, the system parameters of the separation and recovery unit, such as temperature and pressure, are controlled at 20°C and 5 MPa. Then open the shut-off valve to deflate quickly, and the deflation time is 8s; then use a cold-field electron microscope to observe the changes in the surface morphology before and after the flash explosion, and the results are as follows Figure 10 with Figure 11 shown.

[0067] Figure 10 It is the original picture of the wool fabric under the scanning electron microscope. It can be seen that the surface of the single fiber of t...

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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PUM

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Abstract

The invention discloses a supercritical CO2 fluid flash explosion treatment method for natural fibers and products of the natural fibers. The method comprises the following steps of filling dry natural fibers or natural fiber products into a flash explosion treatment unit according to a predetermined form, and transferring the flash explosion treatment unit into a flash explosion treatment device;connecting the flash explosion treatment device with a CO2 medium device, filling a CO2 medium into the flash explosion treatment device, and heating at the same time; when the modification treatmenttemperature and the modification treatment pressure in the flash explosion treatment device reach preset values, sequentially treating predetermined modification treatment time according to fluid circulation and fluid standing, and enabling the fluid to uniformly and sufficiently enter and to be distributed in the fiber inner phase; performing rapid pressure relief or instantaneous pressure relief on the flash explosion treatment device within the flash explosion time, and reducing the pressure in the flash explosion treatment device to the atmospheric pressure, thereby realizing flash explosion treatment of the dry natural fibers or the natural fiber products. The method is convenient to operate, simple in process, short in technological process, free of wastewater pollution and high intreatment efficiency.

Description

technical field [0001] The present invention relates to the technical field of textile dyeing and finishing processing technology, more specifically, a kind of supercritical CO 2 Fluid flash explosion treatment method. Background technique [0002] In general, matter exists in three states: gas, liquid, and solid, and these three states will transform into each other as the ambient temperature and pressure change. When the temperature rises to a certain value, the liquid state will transform into a gaseous state. And when the pressure is reduced to a certain value, the liquid state will turn into a gaseous state. But for a specific substance, any substance has a critical point (Critical Point, CP), in this state, gas, liquid, and solid coexist, and the degree of freedom of the system state is zero at this time, that is The triple point of every pure substance itself. Before the temperature and pressure above the triple point rise to the critical point at the same time, t...

Claims

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Application Information

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IPC IPC(8): D06P1/94D06P3/60D06P3/14D06P3/04D06B9/00
CPCD06P1/94D06P3/60D06P3/14D06P3/04D06B9/00
Inventor 龙家杰蔡冲施楣梧高潮
Owner 山东出彩无水纤染高科有限公司
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