A method for preparing antibacterial dust-free fiber wiping cloth

Abstract

The invention discloses a preparation method of an antibacterial dust-free fiber wiping cloth, comprising: putting tourmaline into ethanol and stirring evenly, wet ball milling for 2-3 hours, and drying by nitrogen purging to obtain tourmaline powder; adding dopamine hydrochloride into Tris buffer and stirring evenly, and adding tourmaline powder and performing low-temperature ultrasonic treatment for 10-20 minutes to obtain a low-temperature homogeneous slurry; using polyester low-elastic yarn DTY250D / 96F as warp and polyester high-elastic yarn DTY300D / 96F as weft to manufacture grey cloth, and then putting the grey cloth into ethanol aqueous solution for ultrasonic cleaning for 20-30 minutes, filtering and air-drying to obtain clean grey cloth; putting the clean grey cloth into homogenous slurry and standing at low temperature for 20-30 minutes, taking out and performing constant temperature treatment for 3-6 hours to obtain grey cloth with surface coating, and performing constant temperature rinsing on the grey cloth with surface coating, and then acid washing, drying, shaping, and cutting to obtain the dust-free fiber wiping cloth. The present invention utilizes tourmaline as a negative ion source to form a negative ion sterilization system, and at the same time has good stability and adhesion, thereby achieving an excellent wiping effect.

Description

Technical Field

[0001] The invention belongs to the technical field of wiping cloths, and in particular relates to a method for preparing an antibacterial dust-free fiber wiping cloth. Background Art

[0002] Dust-free cloth is a cleaning material specially used in clean rooms. It is required to have good decontamination ability and no reverse contamination. It is widely used in various fields such as microelectronics, optics, semiconductors, automobile manufacturing, biomedicine, pharmaceuticals, medical equipment, and aerospace. However, the conventionally used dust-free cloth has a large number of pore structures inside, which will lead to bacterial deposition and contamination during long-term storage, resulting in secondary contamination of the dust-free wipe during use. Summary of the invention

[0003] In view of the problems in the prior art, the present invention provides a method for preparing an antibacterial dust-free fiber wiping cloth, which solves the defects of the existing dust-free wiping cloth, utilizes tourmaline as a negative ion source to form a negative ion sterilization system, and simultaneously utilizes the adsorption and self-activity of polydopamine, which has good stability and adhesion, to achieve excellent wiping effect.

[0004] In order to achieve the above technical objectives, the technical solution of the present invention is:

[0005] A method for preparing an antibacterial dust-free fiber wiping cloth comprises the following steps:

[0006] Step 1, putting tourmaline into ethanol and stirring evenly, wet ball milling for 2-3h, and drying by nitrogen purging to obtain tourmaline powder, wherein the mass ratio of tourmaline to ethanol is 10-15:2, the pressure of wet ball milling is 0.7-0.9MPa, and the temperature is 5-10°C; the speed of nitrogen purging is 5-10mL / min, and the temperature is 80-90°C; in this step, ethanol is used as a solvent to perform ball milling on the tourmaline, during which the tourmaline is homogenized and dispersed, and the tourmaline is finely crushed in the ball mill to achieve low particle size of the tourmaline; the constant temperature nitrogen purging method can effectively control the problem of tourmaline flying, and ethanol can be converted into steam at this temperature, and quickly transferred to form clean and dry tourmaline powder;

[0007] Step 2, adding dopamine hydrochloride to Tris buffer and stirring evenly, and adding tourmaline powder and performing low-temperature ultrasound for 10-20 minutes to obtain a low-temperature homogeneous slurry; the concentration of dopamine hydrochloride in Tris buffer is 5-8mmol / L, the pH of Tris buffer is 8.5, the concentration is 10-15mmol / L, the stirring speed is 100-400r / min, the amount of tourmaline powder added is 10-20% of the mass of dopamine hydrochloride, the temperature of low-temperature ultrasound is 5-10°C, and the ultrasonic frequency is 60-80kHz; in this step, dopamine hydrochloride is dissolved in Tris buffer under a low temperature environment, and tourmaline is added to form a slurry, and a dopamine liquid film is formed on the surface of the tourmaline using the solubility of dopamine; at the same time, the low temperature condition can reduce the reaction efficiency of dopamine and maintain the overall stability;

[0008] Step 3, using polyester low-elastic yarn DTY250D / 96F as warp and polyester high-elastic yarn DTY300D / 96F as weft to manufacture grey cloth, and then putting the grey cloth into an ethanol aqueous solution for ultrasonic cleaning for 20-30 minutes, filtering and drying to obtain a clean grey cloth, wherein the volume proportion of ethanol in the ethanol aqueous solution is 60-70%, the ultrasonic cleaning frequency is 50-70kHz, the temperature is 10-20°C, and the drying temperature is 30-50°C;

[0009] Step 4, putting the clean grey cloth into the homogenized slurry and letting it stand at low temperature for 20-30 minutes, taking it out and treating it at a constant temperature for 3-6 hours to obtain the grey cloth with surface coating, the concentration of the grey cloth in the homogenized slurry is 10-20g / L, the temperature of the low temperature standing is 5-10°C, and the temperature of the constant temperature treatment is 50-80°C. This step uses the low temperature standing method to wrap a layer of dopamine liquid film on the surface of the monofilament of the grey cloth, and uses the activity and viscosity of dopamine to attach the tourmaline powder to the liquid film. During the constant temperature treatment process, the temperature and alkaline environment in the liquid film can promote the polymerization of dopamine to form polydopamine, and at the same time, polydopamine attaches tourmaline to the surface of the grey cloth.

[0010] Step 5, rinse the surface-coated grey cloth at a constant temperature, then acid wash and dry, shape and cut to obtain a dust-free fiber wiping cloth, wherein the constant temperature rinsing uses deionized water at a temperature of 40-60°C, the pH of the acid wash is 6.5, and the drying temperature is 70-75°C.

[0011] It can be seen from the above description that the present invention has the following advantages:

[0012] 1. The present invention solves the defects of existing dust-free wiping cloths, uses tourmaline as a negative ion source to form a negative ion sterilization system, and uses the adsorption and self-activity of polydopamine at the same time, has good stability and adhesion, and achieves excellent wiping effect;

[0013] 2. The present invention utilizes the electrical conductivity of polydopamine itself to quickly transfer the negative ions of tourmaline, thereby achieving an electrostatic adsorption type dust removal system. At the same time, the dust removal system can adsorb fine dust and improve cleanliness. DETAILED DESCRIPTION

[0014] The present invention is described in detail with reference to the embodiments, but no limitation is imposed on the claims of the present invention. Example 1

[0015] A method for preparing an antibacterial dust-free fiber wiping cloth, characterized in that it comprises the following steps:

[0016] Step 1, putting tourmaline into ethanol and stirring evenly, wet ball milling for 2 hours, and drying by nitrogen purging to obtain tourmaline powder, wherein the mass ratio of tourmaline to ethanol is 10:2, the pressure of wet ball milling is 0.7MPa, and the temperature is 5°C; the speed of nitrogen purging is 5-10mL / min, and the temperature is 80°C;

[0017] Step 2, adding dopamine hydrochloride to Tris buffer and stirring evenly, and adding tourmaline powder and performing low-temperature ultrasound for 10 minutes to obtain a low-temperature homogeneous slurry; the concentration of dopamine hydrochloride in Tris buffer is 5mmol / L, the pH of Tris buffer is 8.5, the concentration is 10mmol / L, the stirring speed is 100r / min, the amount of tourmaline powder added is 10% of the mass of dopamine hydrochloride, the temperature of low-temperature ultrasound is 5-10°C, and the ultrasonic frequency is 60kHz;

[0018] Step 3, using polyester low-elastic yarn DTY250D / 96F as the warp and polyester high-elastic yarn DTY300D / 96F as the weft to manufacture a grey cloth, and then putting the grey cloth into an ethanol aqueous solution for ultrasonic cleaning for 20 minutes, filtering and drying to obtain a clean grey cloth, wherein the volume proportion of ethanol in the ethanol aqueous solution is 60%, the ultrasonic cleaning frequency is 50kHz, the temperature is 10°C, and the drying temperature is 30°C;

[0019] Step 4, put the clean grey cloth into the homogenized slurry and let it stand at low temperature for 20 minutes, take it out and treat it at a constant temperature for 3 hours to obtain the grey cloth with surface coating, the concentration of the grey cloth in the homogenized slurry is 10g / L, the temperature of the low temperature standing is 5°C, and the temperature of the constant temperature treatment is 50°C,

[0020] Step 5, rinse the surface-coated grey cloth at a constant temperature, then acid wash and dry, shape and cut to obtain a dust-free fiber wiping cloth, wherein the constant temperature rinsing uses deionized water at a temperature of 40°C, the pH of the acid wash is 6.5, and the drying temperature is 70°C. Example 2

[0021] A method for preparing an antibacterial dust-free fiber wiping cloth, characterized in that it comprises the following steps:

[0022] Step 1, putting tourmaline into ethanol and stirring evenly, wet ball milling for 3 hours, and drying by nitrogen purging to obtain tourmaline powder, wherein the mass ratio of tourmaline to ethanol is 15:2, the pressure of wet ball milling is 0.9 MPa, and the temperature is 10°C; the speed of nitrogen purging is 10 mL / min, and the temperature is 90°C;

[0023] Step 2, adding dopamine hydrochloride to Tris buffer and stirring evenly, and adding tourmaline powder and performing low-temperature ultrasound for 20 minutes to obtain a low-temperature homogeneous slurry; the concentration of dopamine hydrochloride in Tris buffer is 8mmol / L, the pH of Tris buffer is 8.5, the concentration is 15mmol / L, the stirring speed is 400r / min, the amount of tourmaline powder added is 20% of the mass of dopamine hydrochloride, the temperature of low-temperature ultrasound is 5-10°C, and the ultrasonic frequency is 80kHz;

[0024] Step 3, using polyester low-elastic yarn DTY250D / 96F as the warp and polyester high-elastic yarn DTY300D / 96F as the weft to manufacture a grey cloth, and then putting the grey cloth into an ethanol aqueous solution for ultrasonic cleaning for 30 minutes, filtering and drying to obtain a clean grey cloth, wherein the volume proportion of ethanol in the ethanol aqueous solution is 70%, the ultrasonic cleaning frequency is 70kHz, the temperature is 20°C, and the drying temperature is 50°C;

[0025] Step 4, put the clean grey cloth into the homogenized slurry and let it stand at low temperature for 30 minutes, take it out and treat it at a constant temperature for 3-6 hours to obtain the grey cloth with surface coating, the concentration of the grey cloth in the homogenized slurry is 20g / L, the temperature of the low temperature standing is 10°C, and the temperature of the constant temperature treatment is 80°C,

[0026] Step 5, the surface-coated grey cloth is rinsed at a constant temperature, then acid-washed, dried, shaped, and cut to obtain a dust-free fiber wiping cloth, wherein the constant temperature rinsing uses deionized water at a temperature of 60°C, the pH of the acid wash is 6.5, and the drying temperature is 75°C. Example 3

[0027] A method for preparing an antibacterial dust-free fiber wiping cloth, characterized in that it comprises the following steps:

[0028] Step 1, putting tourmaline into ethanol and stirring evenly, wet ball milling for 3 hours, and drying by nitrogen purging to obtain tourmaline powder, wherein the mass ratio of tourmaline to ethanol is 13:2, the pressure of wet ball milling is 0.8 MPa, and the temperature is 8°C; the speed of nitrogen purging is 8 mL / min, and the temperature is 85°C;

[0029] Step 2, adding dopamine hydrochloride to Tris buffer and stirring evenly, and adding tourmaline powder and performing low-temperature ultrasound for 15 minutes to obtain a low-temperature homogeneous slurry; the concentration of dopamine hydrochloride in Tris buffer is 7mmol / L, the pH of Tris buffer is 8.5, the concentration is 12mmol / L, the stirring speed is 300r / min, the amount of tourmaline powder added is 15% of the mass of dopamine hydrochloride, the temperature of low-temperature ultrasound is 7°C, and the ultrasonic frequency is 70kHz;

[0030] Step 3, using polyester low-elastic yarn DTY250D / 96F as the warp and polyester high-elastic yarn DTY300D / 96F as the weft to manufacture a grey cloth, and then putting the grey cloth into an ethanol aqueous solution for ultrasonic cleaning for 25 minutes, filtering and drying to obtain a clean grey cloth, wherein the volume proportion of ethanol in the ethanol aqueous solution is 65%, the ultrasonic cleaning frequency is 60kHz, the temperature is 15°C, and the drying temperature is 40°C;

[0031] Step 4, put the clean grey cloth into the homogenized slurry and let it stand at low temperature for 25 minutes, take it out and treat it at a constant temperature for 5 hours to obtain the grey cloth with surface coating, the concentration of the grey cloth in the homogenized slurry is 15g / L, the temperature of the low temperature standing is 8°C, and the temperature of the constant temperature treatment is 70°C,

[0032] Step 5, the surface-coated grey cloth is rinsed at a constant temperature, then acid-washed, dried, shaped, and cut to obtain a dust-free fiber wiping cloth, wherein the constant temperature rinsing uses deionized water at a temperature of 50°C, the pH of the acid wash is 6.5, and the drying temperature is 72°C.

[0033] A polyester fiber dust-free cloth was used as a comparative example.

[0034] The examples 1-3 and the comparative examples were tested, and the results were as follows:

[0035] Example 1 Example 2 Example 3 Comparative Example Antimicrobial 99.9% 99.9% 99.9% 23.5% Feel soft soft soft Rough, slightly prickly Velvet generally generally generally none Specific surface area big big big generally

[0036] It is understood that the above specific description of the present invention is only used to illustrate the present invention and is not limited to the technical solutions described in the embodiments of the present invention. Those skilled in the art should understand that the present invention can still be modified or replaced by equivalents to achieve the same technical effects; as long as the use requirements are met, they are within the protection scope of the present invention.

Claims

1. A method for preparing an antibacterial dust-free fiber wiping cloth, characterized in that: The steps include: Step 1, putting tourmaline into ethanol and stirring evenly, wet ball milling for 2-3 hours, and drying by nitrogen purge to obtain tourmaline powder; Step 2, adding dopamine hydrochloride to Tris buffer and stirring evenly, and adding tourmaline powder and performing low-temperature ultrasound for 10-20 minutes to obtain a low-temperature homogeneous slurry; the amount of the tourmaline powder added is 10-20% of the mass of dopamine hydrochloride, the temperature of the low-temperature ultrasound is 5-10°C, and the ultrasound frequency is 60-80kHz; Step 3, using polyester low-elastic yarn DTY250D / 96F as warp and polyester high-elastic yarn DTY300D / 96F as weft to manufacture grey cloth, then ultrasonically cleaning the grey cloth in an ethanol aqueous solution for 20-30 minutes, filtering and drying to obtain a clean grey cloth; Step 4, placing the clean grey cloth in a homogenized slurry and standing at low temperature for 20-30 minutes, taking it out and treating it at a constant temperature for 3-6 hours to obtain a grey cloth with a surface coating, wherein the concentration of the grey cloth in the homogenized slurry is 10-20 g / L, the temperature of the low temperature standing is 5-10° C., and the temperature of the constant temperature treatment is 50-80° C.; Step 5, the surface coated grey cloth is rinsed at a constant temperature, then acid washed, dried, shaped, and cut to obtain a dust-free fiber wiping cloth.

2. The method for preparing the antibacterial dust-free fiber wiping cloth according to claim 1, characterized in that: The mass ratio of tourmaline to ethanol in step 1 is 10-15:2, the pressure of wet ball milling is 0.7-0.9 MPa, the temperature is 5-10° C., the speed of nitrogen purge is 5-10 mL / min, and the temperature is 80-90° C.

3. The method for preparing the antibacterial dust-free fiber wiping cloth according to claim 1, characterized in that: The concentration of dopamine hydrochloride in step 2 in Tris buffer is 5-8 mmol / L, the pH of Tris buffer is 8.5, the concentration is 10-15 mmol / L, and the stirring speed is 100-400 r / min.

4. The method for preparing the antibacterial dust-free fiber wiping cloth according to claim 1, characterized in that: The volume proportion of ethanol in the ethanol aqueous solution in step 3 is 60-70%, the ultrasonic frequency of ultrasonic cleaning is 50-70 kHz, the temperature is 10-20° C., and the drying temperature is 30-50° C.

5. The method for preparing the antibacterial dust-free fiber wiping cloth according to claim 1, characterized in that: The constant temperature rinsing in step 5 uses deionized water at a temperature of 40-60°C, the pH of the acid wash is 6.5, and the drying temperature is 70-75°C.