Preparation method of cool superfine fiber fabric

Abstract

The invention belongs to the technical field of fabrics, and particularly relates to a preparation method of a cool superfine fiber fabric, clean sepiolite particles and graphene oxide powder are obtained by grinding and cleaning sepiolite and cleaning graphene oxide powder, and then melt extrusion is performed on the sepiolite particles and the graphene oxide powder, PET slices, an antioxidant and a dispersing agent to obtain the cool superfine fiber fabric. And spinning and weaving to obtain the cool superfine fiber fabric. According to the cool fabric, the defects of an existing cool fabric are overcome, the adsorption difference between the sepiolite fine powder and graphene oxide is utilized to form separable adsorption of dust and water, and meanwhile, due to the strong water absorption of sepiolite and the variability of a pore structure, the dust adsorption difficulty is greatly improved, and combination of dust and water is reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of fabrics, and particularly relates to a preparation method of cool super-fine fiber fabric. BACKGROUND

[0002] As a new generation of synthetic fiber fabric, the super-fine fiber fabric belongs to high-tech textile raw material and is finer and smoother than ordinary chemical fibers. The super-fine fiber fabric has softness, comfort, high water absorption, wrinkle resistance, easy cleaning and the like, and has become an indispensable part of modern life. At present, the super-fine fiber is used to improve the water absorption by using the low size and large surface area of the fiber material, so as to form the characteristics of high water absorption. Meanwhile, the super-fine fiber fabric uses the rapid separation of sweat to bring a certain cool feeling. However, in a water-containing environment, dust can form a combination with water molecules, agglomerate to form large particles, and bring a certain adhesion, causing the surface coverage of the super-fine fiber surface and being difficult to clean, and causing the decrease of the water absorption and cool feeling of the super-fine fiber. SUMMARY

[0003] In view of the problems in the prior art, the application provides a preparation method of cool super-fine fiber fabric, which solves the defects of the existing cool fabric, uses the adsorption difference of sepiolite fine powder and graphene oxide to form the separation adsorption of dust and water, and meanwhile, the strong water absorption of sepiolite and the variability of the pore structure greatly improve the dust adsorption difficulty and reduce the combination of dust and water.

[0004] To achieve the above technical purposes, the technical scheme of the application is as follows. A preparation method of cool super-fine fiber fabric, comprising the following steps: Step 1, sepiolite is put into ethanol and stirred uniformly, then wet grinding treatment is performed for 30-60 min, and sepiolite fine powder is obtained by drying, the mass ratio of the sepiolite to the ethanol is 3-5:1, the stirring speed of uniform stirring is 100-400 r / min, the temperature of the wet grinding treatment is 30-50 DEG C, the grinding pressure is 0.4-0.6 MPa, and the temperature of the drying is 80-90 DEG C; this step uses the insolubility of ethanol to sepiolite, and the mass of ethanol is lower than that of sepiolite, so that the surface of sepiolite can be wetted, good wettability can be maintained in the wet grinding, and sepiolite is finely ground to form a powder; finally, ethanol is completely evaporated in situ in the drying, and sepiolite fine powder after grinding treatment is obtained; Step 2, put the sepiolite fine powder into ethanol and ultrasonic treatment for 20-30 min, then spray drying to obtain clean sepiolite fine powder, the mass of sepiolite fine powder and ethanol is 1:5-8, the ultrasonic frequency of ultrasonic treatment is 80-100 kHz, the temperature is 20-30℃, the spray drying speed is 10-20 mL / min, and the temperature is 100-120℃; this step puts the sepiolite fine powder into ethanol to form a good suspension, and uses the pore structure of sepiolite itself and the high frequency vibration of ultrasonic treatment to penetrate ethanol into the sepiolite fine powder, and gradually remove the impurities in the vibration, so as to achieve the effect of impurity removal; spray drying is based on the thermal stability of sepiolite powder and the relatively low boiling point of ethanol to form a stable and rapid separation, so as to realize the impurity removal of sepiolite fine powder; Step 3, put the graphene oxide powder into water and ultrasonic treatment for 20-30 min, then filter and wash, and get graphene oxide particles after freeze drying, the mass ratio of graphene oxide powder and water is 1:3-7, the ultrasonic treatment temperature is 5-10℃, the ultrasonic frequency is 60-80 kHz, and the freeze drying temperature is-20℃; this step uses the high frequency vibration of ultrasonic to strip the impurities in the graphene oxide powder, and gets the graphene oxide powder containing water after filtering and washing, and completely removes the water in the freeze drying, so as to get the dry graphene oxide powder, it should be noted that graphene oxide itself belongs to the oxidation material of graphene, and the structure will change in further oxidation, the change not only involves the introduction of oxygen-containing groups and the change of interlayer spacing, but also the distribution of local activity; Step 4, blend PET chips, antioxidant, dispersant, graphene oxide particles and sepiolite fine powder uniformly, and put them into a double screw extruder for melt extrusion to get a mixed melt; the melt extrusion temperature is 270-280℃; the main machine speed is 100-300 rpm, the feeding speed is 100-200 rpm, the cutting speed is 300-500 rpm, and the extrusion pressure is 5-7 MPa; the mass ratio of the mixed melt is: PET chips 80-100 parts, antioxidant 5-10 parts, dispersant 3-6 parts, graphene oxide particles 4-6 parts, and sepiolite fine powder 8-11 parts, the antioxidant uses tea polyphenol, and the dispersant uses polyethylene glycol; this step uses melt extrusion to uniformly distribute graphene oxide particles and sepiolite fine powder in the terylene melt, and the surface of graphene oxide particles and sepiolite fine powder contains porous structure, which is relatively small and difficult to penetrate the melt into the sepiolite fine powder and graphene oxide particles, so as to maintain the structural stability of the fine powder and particles; Step 5, the mixed melt is put into a spinning box, and ultrafine fibers are obtained through melt spinning, the temperature of melt spinning is 280-290 DEG C, the speed of spinning is 2500-3800 m / min, the temperature of cooling air is 20-45 DEG C, and the speed of cooling air is 0.3-0.8 m / min.

[0005] From the above description, it can be seen that the present application has the following advantages: 1. The present application solves the defects of the existing cool fabric, utilizes the adsorption difference of sepiolite powder and graphene oxide, forms dust and moisture separation adsorption, at the same time, the strong water absorption and the variability of the pore structure of sepiolite greatly improve the difficulty of dust adsorption and reduce the combination of dust and moisture; 2. The present application utilizes the temperature resistance and wear resistance of sepiolite powder, which can maintain the stability of structure and performance in the process of melt extrusion, and the sepiolite powder can quickly absorb moisture after meeting sweat, form moisture transfer and bring a certain cool feeling, cooperate with the fiber softening characteristics of sepiolite powder, it is difficult to attach particulate impurities, keep the exposure and effect of sepiolite powder; 3. The present application utilizes the adsorption of graphene oxide itself, which has strong adsorption effect on particulate impurities, the adsorption comes from the active groups on the surface of graphene oxide, which can form solid-liquid separation with the water absorption of sepiolite powder, and eliminate the influence of dust covering; 4. The present application's graphene oxide and sepiolite powder both belong to wear-resistant particles, which can effectively improve the wear resistance of polyester fiber, cooperate with the pore structure on the surface of graphene oxide and sepiolite powder, which can effectively prevent long-term accumulation of dust and has good dust removal characteristics. DETAILED DESCRIPTION

[0006] The present application is described in detail in combination with examples, but does not limit the claims of the present application. Example 1

[0007] A preparation method of cool ultrafine fiber fabric, comprising the following steps: Step 1, put sepiolite into ethanol and stir uniformly, then wet grinding treatment for 30 min, and dry to obtain sepiolite powder, the mass ratio of sepiolite and ethanol is 5:1, the stirring speed of uniform stirring is 100 r / min, the temperature of wet grinding treatment is 30 DEG C, the grinding pressure is 0.4 MPa, and the drying temperature is 80 DEG C; Step 2, put sepiolite powder into ethanol and ultrasonic treatment for 20 min, then spray drying to obtain clean sepiolite powder, the mass ratio of sepiolite powder and ethanol is 1:8, the ultrasonic frequency of ultrasonic treatment is 80 kHz, the temperature is 20 DEG C, the spray drying speed is 10 mL / min, and the temperature is 100 DEG C; Step 3, put the graphene oxide powder into water and ultrasonic treat for 20 min, then wash after filtration, and get the graphene oxide particles after freeze drying, the mass ratio of graphene oxide powder to water is 1:7, the ultrasonic treatment temperature is 5℃, the ultrasonic frequency is 60 kHz, and the freeze drying temperature is -20℃; Step 4, blend the PET chips, antioxidant, dispersant, graphene oxide particles and sepiolite powder uniformly, and put them into a double screw extruder to melt extrude, and get the mixed melt; the melt extrusion temperature is 270℃; the main machine rotation speed is 100 rpm, the feeding rotation speed is 100 rpm, the granulation rotation speed is 300 rpm, and the extrusion pressure is 5 MPa; the mass ratio of the mixed melt is: PET chips 100 parts, antioxidant 10 parts, dispersant 6 parts, graphene oxide particles 6 parts, and sepiolite powder 11 parts, the antioxidant is tea polyphenol, and the dispersant is polyethylene glycol; Step 5, put the mixed melt into a spinning box, melt spin to get superfine fibers, and weave to get the cool feeling superfine fiber fabric, the melt spinning temperature is 280℃; the spinning speed is 2500 m / min, the cooling air temperature is 20℃, and the cooling air speed is 0.3 m / min. Example 2

[0008] A method for preparing a cool feeling superfine fiber fabric, comprising the following steps: Step 1, put sepiolite into ethanol and stir uniformly, then wet grinding treatment for 60 min, and dry to get sepiolite powder, the mass ratio of sepiolite to ethanol is 3:1, the stirring speed for uniform stirring is 400 r / min, the wet grinding treatment temperature is 50℃, the grinding pressure is 0.6 MPa, and the drying temperature is 90℃; Step 2, put the sepiolite powder into ethanol and ultrasonic treat for 30 min, then spray dry to get clean sepiolite powder, the mass ratio of sepiolite powder to ethanol is 1:5, the ultrasonic frequency of ultrasonic treatment is 100 kHz, the temperature is 30℃, the spray speed of spray drying is 20 mL / min, and the temperature is 120℃; Step 3, put the graphene oxide powder into water and ultrasonic treat for 30 min, then wash after filtration, and get the graphene oxide particles after freeze drying, the mass ratio of graphene oxide powder to water is 1:3, the ultrasonic treatment temperature is 10℃, the ultrasonic frequency is 80 kHz, and the freeze drying temperature is -20℃; Step 4, blend the PET chips, antioxidant, dispersant, graphene oxide particles and sepiolite powder uniformly, and melt extrude in a double screw extruder to obtain a mixed melt; the temperature of the melt extrusion is 280℃; the main machine rotation speed is 300 rpm, the feeding rotation speed is 200 rpm, the granulation rotation speed is 500 rpm, and the extrusion pressure is 7 MPa; the mass ratio of the mixed melt is: PET chips 80 parts, antioxidant 5 parts, dispersant 3 parts, graphene oxide particles 4 parts, and sepiolite powder 8 parts, the antioxidant is tea polyphenol, and the dispersant is polyethylene glycol; Step 5, place the mixed melt into a spinning box to obtain ultra-fine fibers by melt spinning, and obtain a cool-feeling ultra-fine fiber fabric by weaving; the temperature of the melt spinning is 290℃; the spinning speed is 3800 m / min, the cooling air temperature is 45℃, and the cooling air speed is 0.8 m / min. Example 3

[0009] A method for preparing a cool-feeling ultra-fine fiber fabric, comprising the following steps: Step 1, stir the sepiolite in ethanol uniformly, then wet-grind for 50 min, and dry to obtain sepiolite powder; the mass ratio of sepiolite to ethanol is 4:1, the stirring speed is 300 r / min, the temperature of the wet-grinding is 40℃, the grinding pressure is 0.5 MPa, and the drying temperature is 85℃; Step 2, ultrasonically treat the sepiolite powder in ethanol for 30 min, then spray dry to obtain clean sepiolite powder; the mass ratio of sepiolite powder to ethanol is 1:7, the ultrasonic frequency is 90 kHz, the temperature is 25℃, the spray drying speed is 15 mL / min, and the temperature is 110℃; Step 3, ultrasonically treat the graphene oxide powder in water for 25 min, filter, wash, and freeze-dry to obtain graphene oxide particles; the mass ratio of graphene oxide powder to water is 1:6, the ultrasonic treatment temperature is 8℃, the ultrasonic frequency is 70 kHz, and the freeze-drying temperature is -20℃; Step 4, blend the PET chips, antioxidant, dispersant, graphene oxide particles and sepiolite powder uniformly, and melt extrude in a double screw extruder to obtain a mixed melt; the temperature of the melt extrusion is 275℃; the main machine rotation speed is 200 rpm, the feeding rotation speed is 150 rpm, the granulation rotation speed is 400 rpm, and the extrusion pressure is 6 MPa; the mass ratio of the mixed melt is: PET chips 90 parts, antioxidant 8 parts, dispersant 5 parts, graphene oxide particles 5 parts, and sepiolite powder 10 parts, the antioxidant is tea polyphenol, and the dispersant is polyethylene glycol; Step 5, the mixed melt is put into a spinning box, and ultra-fine fibers are obtained through melt spinning, and the cooling feeling ultra-fine fiber fabric is obtained through weaving, the temperature of the melt spinning is 290 DEG C; the speed of the spinning is 3000 m / min, the cooling wind temperature is 35 DEG C, and the cooling wind speed is 0.6 m / min.

[0010] Comparative Example 1 A preparation method of a cooling feeling ultra-fine fiber fabric, comprising the following steps: Step 1, the sepiolite is put into ethanol and stirred uniformly, then wet grinding treatment is carried out for 50 min, and sepiolite powder is obtained by drying, the mass ratio of the sepiolite to ethanol is 4:1, the stirring speed of the uniform stirring is 300 r / min, the temperature of the wet grinding treatment is 40 DEG C, the grinding pressure is 0.5 MPa, and the temperature of the drying is 85 DEG C; Step 2, the sepiolite powder is put into ethanol and ultrasonic treatment is carried out for 30 min, then spray drying is carried out, and clean sepiolite powder is obtained, the mass ratio of the sepiolite powder to ethanol is 1:7, the ultrasonic frequency of the ultrasonic treatment is 90 kHz, the temperature is 25 DEG C, the spray speed of the spray drying is 15 mL / min, and the temperature is 110 DEG C; Step 3, the PET chip, antioxidant, dispersant sepiolite powder are uniformly blended, and a mixed melt is obtained by melt extrusion in a double screw extruder; the temperature of the melt extrusion is 275 DEG C; the main machine rotating speed is 200 rpm, the feeding rotating speed is 150 rpm, the pelletizing rotating speed is 400 rpm, and the extrusion pressure is 6 MPa; the mass ratio of the mixed melt is: PET chip 90 parts, antioxidant 8 parts, dispersant 5 parts, and sepiolite powder 10 parts, the antioxidant is tea polyphenol, and the dispersant is polyethylene glycol; Step 4, the mixed melt is put into a spinning box, and ultra-fine fibers are obtained through melt spinning, and the cooling feeling ultra-fine fiber fabric is obtained through weaving, the temperature of the melt spinning is 290 DEG C; the speed of the spinning is 3000 m / min, the cooling wind temperature is 35 DEG C, and the cooling wind speed is 0.6 m / min.

[0011] Comparative Example 2 A preparation method of a cooling feeling ultra-fine fiber fabric, comprising the following steps: Step 1, the graphene oxide powder is put into water and ultrasonic treatment is carried out for 25 min, then washing is carried out after filtration, and graphene oxide particles are obtained through freeze drying, the mass ratio of the graphene oxide powder to water is 1:6, the temperature of the ultrasonic treatment is 8 DEG C, the ultrasonic frequency is 70 kHz, and the temperature of the freeze drying is -20 DEG C; Step 2: PET chips, antioxidant, dispersant, and graphene oxide particles are mixed evenly and then melt-extruded in a twin-screw extruder to obtain a mixed melt. The melt extrusion temperature is 275℃; the main extruder speed is 200 rpm, the feed speed is 150 rpm, the pelletizing speed is 400 rpm, and the extrusion pressure is 6 MPa. The mass ratio of the mixed melt is: 90 parts PET chips, 8 parts antioxidant, 5 parts dispersant, and 5 parts graphene oxide particles. The antioxidant is tea polyphenol, and the dispersant is polyethylene glycol. Step 3: The mixed melt is placed in a spinning box and melt-spun to obtain microfibers, which are then woven to obtain microfiber fabric. The melt-spun temperature is 290℃, the spinning speed is 3000m / min, the cooling air temperature is 35℃, and the cooling air velocity is 0.6m / min.

[0012] Comparative Example 3 A method for preparing a cooling microfiber fabric includes the following steps: Step 1: Soak graphene oxide powder in water and sonicate for 25 minutes. After filtration and washing, obtain graphene oxide particles by freeze drying. The mass ratio of graphene oxide powder to water is 1:6. The ultrasonic treatment temperature is 8°C and the ultrasonic frequency is 70kHz. The freeze drying temperature is -20°C. Step 2: PET chips, antioxidant, dispersant, and graphene oxide particles are mixed evenly and then melt-extruded in a twin-screw extruder to obtain a mixed melt. The melt extrusion temperature is 275℃; the main extruder speed is 200 rpm, the feed speed is 150 rpm, the pelletizing speed is 400 rpm, and the extrusion pressure is 6 MPa. The mass ratio of the mixed melt is: 90 parts PET chips, 8 parts antioxidant, 5 parts dispersant, and 5 parts graphene oxide particles. The antioxidant is tea polyphenol, and the dispersant is polyethylene glycol. Step 3: The mixed melt is placed in a spinning box and melt-spun to obtain microfiber. After weaving, it is immersed in a cooling finishing solution and dried to obtain a cooling microfiber fabric. The melt spinning temperature is 290℃; the spinning speed is 3000m / min; the cooling air temperature is 35℃; the cooling air velocity is 0.6m / min; the cooling finishing solution is an aqueous solution of Rudolf cooling finishing agent RUCO-THERM CMB-A, and the mass percentage of Rudolf cooling finishing agent RUCO-THERM CMB-A in the finishing solution is 0.08; the drying temperature is 130℃.

[0013] Performance testing Using the microfiber fabrics of Examples 1-3 and Comparative Examples 1-3 as test samples, the following performance tests were conducted: Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Contact coolness before washing 0.30 0.33 0.32 0.27 0.23 0.29 Contact coolness after 200 washes 0.29 0.31 0.31 0.26 0.22 0.21 Drop spread time s 2.4 2.2 2.2 2.4 3.7 3.8 Drop spread time s after 200 washes 2.5 2.3 2.3 2.6 3.9 3.8 Number of breakage rubs 259 268 265 237 229 226 The above performance test data demonstrates that both sepiolite particles and graphene oxide powder used in this technical solution exhibit excellent abrasion resistance, effectively improving the structural stability and performance durability of the fabric. Simultaneously, sepiolite particles accelerate water separation, achieving liquid separation while providing a pleasant cooling effect. Furthermore, the heat transfer properties of graphene oxide further enhance the cooling effect, thus improving the cooling effect from both water droplet separation and temperature transfer perspectives. In other words, both graphene oxide and sepiolite in this technical solution are distributed within the fiber, ensuring their stable performance within the fiber and preventing loss due to abrasion.

[0014] It is understood that the above detailed description of the present invention is for illustrative purposes only and is not intended to limit the technical solutions described in the embodiments of the present invention. Those skilled in the art should understand that modifications or equivalent substitutions can still be made to the present invention to achieve the same technical effects; as long as the usage requirements are met, they are all within the protection scope of the present invention.

Claims

1. A method for producing a cool-feeling microfiber fabric, characterized by: The method comprises the following steps: Step 1, put the sepiolite into ethanol and stir uniformly, then wet grinding treatment for 30-60 min, and dry to obtain sepiolite powder; Step 2, put the sepiolite powder into ethanol and ultrasonic treatment for 20-30 min, then spray drying to obtain clean sepiolite powder; Step 3, put the graphene oxide powder into water and ultrasonic treatment for 20-30 min, then filter and wash, and freeze drying to obtain graphene oxide particles; Step 4, blend the PET chips, antioxidant, dispersant, graphene oxide particles and sepiolite powder uniformly, and put into a double screw extruder to melt extrude to obtain a mixed melt; Step 5, put the mixed melt into a spinning box, melt spinning to obtain ultrafine fibers, and weaving to obtain cool ultrafine fiber fabric.

2. The method of claim 1, wherein the cool-feeling microfiber fabric is prepared by the steps of: The mass ratio of sepiolite to ethanol in step 1 is 3-5:1, and the stirring speed for uniform stirring is 100-400 r / min.

3. The method for preparing the cooling microfiber fabric according to claim 1, characterized in that: The temperature for wet grinding treatment in step 1 is 30-50℃, the grinding pressure is 0.4-0.6 MPa, and the drying temperature is 80-90℃.

4. The method for preparing the cooling microfiber fabric according to claim 1, characterized in that: The mass ratio of sepiolite powder to ethanol in step 2 is 1:5-8, the ultrasonic frequency for ultrasonic treatment is 80-100 kHz, the temperature is 20-30℃, the spray speed for spray drying is 10-20 mL / min, and the temperature is 100-120℃.

5. The method for preparing the cooling microfiber fabric according to claim 1, characterized in that: The mass ratio of graphene oxide powder to water in step 3 is 1:3-7, the ultrasonic treatment temperature is 5-10℃, the ultrasonic frequency is 60-80 kHz, and the freeze drying temperature is -20℃.

6. The method of claim 1, wherein the cool-feeling microfiber fabric is prepared by the steps of: The temperature for melt extrusion in step 4 is 270-280℃; the main machine speed is 100-300 rpm, the feeding speed is 100-200 rpm, the cutting speed is 300-500 rpm, and the extrusion pressure is 5-7 MPa.

7. The method for preparing the cooling microfiber fabric according to claim 1, characterized in that: The mass ratio of the mixed melt in step 4 is: PET chips 80-100 parts, antioxidant 5-10 parts, dispersant 3-6 parts, graphene oxide particles 4-6 parts, and sepiolite powder 8-11 parts.

8. The method of claim 7, wherein the method further comprises the step of: 8-1) washing the fabric obtained in the step 7-2) with water at a temperature of 20 to 30°C for 5 to 10 minutes. The antioxidant is tea polyphenol.

9. The method for preparing the cooling microfiber fabric according to claim 7, characterized in that: The dispersant is polyethylene glycol.

10. The method for preparing the cooling microfiber fabric according to claim 1, characterized in that: The temperature for melt spinning in step 5 is 280-290℃; the spinning speed is 2500-3800 m / min, the cooling air temperature is 20-45℃, and the cooling air speed is 0.3-0.8 m / min.