CN112981933A - Preparation method of high-strength black conductive non-woven fabric - Google Patents
Preparation method of high-strength black conductive non-woven fabric Download PDFInfo
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- D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
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- D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
- D06M10/02—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements ultrasonic or sonic; Corona discharge
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- D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
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Abstract
The invention relates to the technical field of non-woven fabric preparation, in particular to a preparation method of a high-strength black conductive non-woven fabric; according to the invention, the black polyester staple fiber, the bamboo charcoal staple fiber and the carbon black conductive staple fiber are used as raw materials for preparing the non-woven fabric, and the prepared non-woven fabric not only has good conductivity, but also has the characteristics of high strength and excellent mechanical property; the nano silver has good conductivity, and is synergistic with other fiber raw materials, so that the conductivity of the non-woven fabric is effectively enhanced; moreover, the nano-silver has excellent antibacterial performance, and is matched with the quaternary ammonium salt bactericide, the nano-powder and the bamboo charcoal short fiber for use, so that the prepared non-woven fabric product has a good slow-release sterilization effect, and the service life of the non-woven fabric is prolonged; in addition, the synergistic cooperation of the nano powder and the 4-propylene oxy-2-hydroxybenzophenone enables the non-woven fabric product to have good ultraviolet resistance and ageing resistance, and effectively improves the quality of the non-woven fabric product.
Description
Technical Field
The invention relates to the technical field of non-woven fabric preparation, in particular to a preparation method of a high-strength black conductive non-woven fabric.
Background
Nonwoven fabrics, also known as non-woven fabrics, needle punched cotton, and the like, are composed of oriented or random fibers. It is called a cloth because of its appearance and certain properties. The non-woven fabric has no warp and weft, is very convenient to cut and sew, is light in weight and easy to shape, and is popular with hand fans. Because it is a fabric formed without spinning a woven fabric, it is formed by orienting or randomly arranging textile staple fibers or filaments to form a web structure and then reinforcing them by mechanical, thermal or chemical means.
The non-woven fabric has the characteristics of moisture resistance, air permeability, flexibility, light weight, no combustion supporting, easy decomposition, no toxicity or irritation, rich color, low price, recycling and the like. So that the application field is wider and wider at present.
At present, conductive non-woven fabrics need to be used in some special environments, but the conductive non-woven fabrics produced by the existing process have certain conductive performance, but the conductive performance is relatively poor, and needs to be further improved. Moreover, the strength (mechanical property) of the product is relatively low, and the anti-aging and antibacterial properties are relatively poor, which seriously affects the service life and the quality of the product.
Based on the above, the invention provides a preparation method of a high-strength black conductive non-woven fabric, so as to solve the above problems.
Disclosure of Invention
The invention aims to provide a preparation method of a high-strength black conductive non-woven fabric, the prepared non-woven fabric not only has good conductivity, but also has good ageing resistance and antibacterial property, and simultaneously the mechanical property of the non-woven fabric is relatively excellent, so that the quality and the quality of the non-woven fabric are effectively ensured.
In order to achieve the purpose, the invention provides the following technical scheme:
the preparation method of the high-strength black conductive non-woven fabric is characterized by comprising the following steps of:
i, pretreating black polyester staple fibers, bamboo charcoal staple fibers and carbon black conductive staple fibers according to the weight ratio of 7-10: 0.8-1.4: 1.5-2.0 mixing; then opening and loosening the black polyester staple fiber, the bamboo charcoal staple fiber and the carbon black conductive staple fiber; carding the opened short fibers into a short fiber net, lapping, and then carrying out needle punching forming treatment to obtain a non-woven fabric blank; storing for later use;
II, transferring the non-woven fabric obtained in the step I into a plasma discharge device, and starting an on-off key of the plasma discharge device and an argon steel cylinder matched with the plasma discharge device; then setting relevant frequency and power parameters of the plasma discharge device, and simultaneously controlling the flow rate of argon gas to be 2.5-3.6L/min; when the two electrodes are in a uniform and stable purple state, feeding the non-woven fabric blank into a discharge area, treating the non-woven fabric blank for 30-40 s, and then guiding out, and storing the pre-treated non-woven fabric blank for later use;
III, dipping the non-woven fabric blank obtained in the step II into a mixed solution at the temperature of 40-55 ℃, then carrying out ultrasonic dispersion for 10-20 min, and respectively adding 5-18% by mass of 4-propenyloxy-2-hydroxybenzophenone and a proper amount of an initiator into the mixed solution; carrying out ultrasonic mixing for 8-15 min, and then reacting for 40-50 min at the temperature of 60-75 ℃; after the reaction is finished, performing secondary soaking and secondary rolling to ensure that the rolling residual rate is 100%, then pre-drying at 50-60 ℃ for 5-10 min, and then baking at 100-120 ℃ for 4-8 min; after baking treatment, washing the non-woven fabric by using an organic solvent, transferring the obtained non-woven fabric into a drying box, and drying the non-woven fabric at the temperature of 60-70 ℃; the obtained product is the finished product of the high-strength black conductive non-woven fabric.
Furthermore, in the step I, the black polyester staple fibers, the bamboo charcoal staple fibers and the carbon black conductive staple fibers are washed clean by ethanol, and then are transferred into a constant-temperature drying oven to be dried at the temperature of 60-75 ℃; and after drying, finishing the pretreatment of the black polyester staple fiber, the bamboo charcoal staple fiber and the carbon black conductive staple fiber.
Furthermore, in the step II, the frequency of the plasma discharge device is set to be 20-35 kHz, and the power is set to be 400-600W.
Furthermore, in the step III, the bath ratio of the non-woven fabric blank in the dipping process is 1: 20-30.
Furthermore, in the step iii, the preparation method of the mixed solution comprises: respectively weighing 100-130 parts by weight of 60-75% volume concentration ethanol solution, 15-25 parts by weight of nano silver, 5-8 parts by weight of quaternary ammonium salt bactericide, 6-10 parts by weight of nano powder and 2.8-4.2 parts by weight of surfactant; and then ultrasonically dispersing the raw materials for 10-20 min at the frequency of 25-35 kHz to obtain a finished product of the mixed solution.
Furthermore, the quaternary ammonium salt bactericide is any one of dodecyl trimethyl ammonium chloride, dodecyl dimethyl benzyl ammonium chloride and dodecyl dimethyl benzyl ammonium bromide.
Furthermore, the nano powder is prepared by mixing nano titanium dioxide and nano zinc oxide according to the mass ratio of 1: 1.5-2.5.
Further, the surfactant is any one of coco glucoside, lauryl glucoside and cetearyl glucoside.
In step III, the initiator is selected from any one of benzoyl peroxide and lauroyl peroxide, and the dosage of the initiator is 0.4-0.6% of 4-propenyloxy-2-hydroxybenzophenone.
Furthermore, in the step III, acetone is selected as the organic solvent, and the drying temperature of the non-woven fabric is set to be 60-75 ℃.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the black polyester staple fiber, the bamboo charcoal staple fiber and the carbon black conductive staple fiber are used as raw materials for preparing the non-woven fabric, and the prepared non-woven fabric not only has good conductivity, but also has the characteristics of high strength and excellent mechanical property;
in addition, the non-woven fabric is arranged in the plasma discharge device and is modified by the plasma technology, so that the mechanical properties and the strength of the black polyester staple fiber, the bamboo charcoal staple fiber and the carbon black conductive staple fiber are effectively improved. The number of fiber surface active groups can also be effectively enhanced. The non-woven fabric blank after pretreatment (activation treatment) is soaked in a mixed solution containing nano silver, quaternary ammonium salt bactericide, nano powder and surfactant, and the agglomeration phenomenon of the nano powder can be effectively reduced in the presence of the surfactant. In addition, in the dipping process, the quaternary ammonium salt bactericide and the nano powder can be uniformly dispersed and reside in gaps formed by fiber materials in a non-woven fabric blank under the action of ultrasonic dispersion, and then the 4-propenyloxy-2-hydroxybenzophenone and the non-woven fabric blank after pretreatment are subjected to chemical reaction under the action of an initiator, so that the 4-propenyloxy-2-hydroxybenzophenone and active groups on the surface of the non-woven fabric are subjected to chemical reaction to form bonds. The nano silver, the quaternary ammonium salt bactericide and the nano powder are effectively limited in a three-dimensional network sandwich structure formed by non-woven fabrics and 4-propylene oxy-2-hydroxybenzophenone. The nano silver has good conductivity, and is synergistic with other fiber raw materials, so that the conductivity of the non-woven fabric is effectively enhanced.
And moreover, the nano silver has excellent antibacterial performance, and is matched with a quaternary ammonium salt bactericide, nano powder and bamboo charcoal short fibers for use, so that the prepared non-woven fabric product has a good slow-release sterilization effect, and the service life of the non-woven fabric is effectively prolonged.
In addition, the synergistic cooperation of the nano powder and the 4-propylene oxy-2-hydroxybenzophenone enables the non-woven fabric product to have good ultraviolet resistance and ageing resistance, effectively delays the ageing rate of the non-woven fabric product and improves the quality of the non-woven fabric product.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The preparation method of the high-strength black conductive non-woven fabric is characterized by comprising the following steps of:
i, pre-treating black polyester staple fibers, bamboo charcoal staple fibers and carbon black conductive staple fibers in parts by weight of 7: 0.8: 1.5, mixing; then opening and loosening the black polyester staple fiber, the bamboo charcoal staple fiber and the carbon black conductive staple fiber; carding the opened short fibers into a short fiber net, lapping, and then carrying out needle punching forming treatment to obtain a non-woven fabric blank; storing for later use;
II, transferring the non-woven fabric obtained in the step I into a plasma discharge device, and starting an on-off key of the plasma discharge device and an argon steel cylinder matched with the plasma discharge device; then setting relevant frequency and power parameters of the plasma discharge device, and simultaneously controlling the flow rate of argon gas to be 2.5L/min; when the two electrodes are in a uniform and stable purple state, feeding the non-woven fabric blank into a discharge area, processing the non-woven fabric blank for 30s, and then guiding out the non-woven fabric blank, and storing the pre-processed non-woven fabric blank for later use;
III, dipping the non-woven fabric blank obtained in the step II into a mixed solution at the temperature of 40 ℃, then carrying out ultrasonic dispersion for 10min, and respectively adding 5% by mass of 4-propylene oxy-2-hydroxybenzophenone and a proper amount of initiator into the mixed solution; ultrasonic mixing for 8min, and reacting at 60 deg.C for 40 min; after the reaction is finished, performing secondary soaking and secondary rolling to ensure that the rolling residual rate is 100 percent, then pre-baking for 5min at 50 ℃, and then baking for 8min at 100 ℃; after baking treatment, washing the non-woven fabric by using an organic solvent, transferring the obtained non-woven fabric into a drying box, and drying the non-woven fabric at the temperature of 60 ℃; the obtained product is the finished product of the high-strength black conductive non-woven fabric.
Step I, washing black polyester staple fibers, bamboo charcoal staple fibers and carbon black conductive staple fibers with ethanol, then transferring into a constant-temperature drying oven, and drying at 60 ℃; and after drying, finishing the pretreatment of the black polyester staple fiber, the bamboo charcoal staple fiber and the carbon black conductive staple fiber.
In step II, the frequency of the plasma discharge device is set to 20kHz, and the power is set to 400W.
In the step III, the bath ratio of the non-woven fabric blank in the dipping process is 1: 20.
In the step III, the preparation method of the mixed solution comprises the following steps: respectively weighing 100 parts of ethanol solution with volume concentration of 60%, 15 parts of nano silver, 5 parts of quaternary ammonium salt bactericide, 6 parts of nano powder and 2.8 parts of surfactant according to the weight components; and then ultrasonically dispersing the raw materials for 20min at the frequency of 25kHz to obtain a finished product of the mixed solution.
The quaternary ammonium salt bactericide is dodecyl trimethyl ammonium chloride.
The nano powder is prepared by mixing nano titanium dioxide and nano zinc oxide according to the mass ratio of 1: 1.5.
The surfactant is coco glucoside.
In the step III, benzoyl peroxide is selected as the initiator, and the dosage of the benzoyl peroxide is 0.4 percent of that of 4-propylene oxy-2-hydroxybenzophenone.
In the step III, acetone is selected as the organic solvent, and the drying temperature of the non-woven fabric is set to be 60 ℃.
Example 2
The preparation method of the high-strength black conductive non-woven fabric is characterized by comprising the following steps of:
i, pre-treating black polyester staple fibers, bamboo charcoal staple fibers and carbon black conductive staple fibers according to the weight ratio of 8: 1.0: 1.6, mixing; then opening and loosening the black polyester staple fiber, the bamboo charcoal staple fiber and the carbon black conductive staple fiber; carding the opened short fibers into a short fiber net, lapping, and then carrying out needle punching forming treatment to obtain a non-woven fabric blank; storing for later use;
II, transferring the non-woven fabric obtained in the step I into a plasma discharge device, and starting an on-off key of the plasma discharge device and an argon steel cylinder matched with the plasma discharge device; then setting relevant frequency and power parameters of the plasma discharge device, and simultaneously controlling the flow rate of argon gas to be 3.0L/min; when the two electrodes are in a uniform and stable purple state, feeding the non-woven fabric blank into a discharge area, processing the non-woven fabric blank for 35 seconds, and then guiding out the non-woven fabric blank, and storing the pre-processed non-woven fabric blank for later use;
III, dipping the non-woven fabric blank obtained in the step II into a mixed solution at the temperature of 45 ℃, then carrying out ultrasonic dispersion for 15min, and respectively adding 10% by mass of 4-propenyloxy-2-hydroxybenzophenone and a proper amount of initiator into the mixed solution; ultrasonic mixing for 10min, and reacting at 65 deg.C for 45 min; after the reaction is finished, performing secondary soaking and secondary rolling to ensure that the rolling residual rate is 100 percent, then pre-baking at 55 ℃ for 8min, and then baking at 110 ℃ for 5 min; after baking treatment, washing the non-woven fabric by using an organic solvent, transferring the obtained non-woven fabric into a drying box, and drying the non-woven fabric at the temperature of 65 ℃; the obtained product is the finished product of the high-strength black conductive non-woven fabric.
Step I, washing black polyester staple fibers, bamboo charcoal staple fibers and carbon black conductive staple fibers with ethanol, then transferring into a constant-temperature drying oven, and drying at 65 ℃; and after drying, finishing the pretreatment of the black polyester staple fiber, the bamboo charcoal staple fiber and the carbon black conductive staple fiber.
In step II, the frequency of the plasma discharge device is set to 28kHz, and the power is set to 480W.
In the step III, the bath ratio of the non-woven fabric blank in the dipping process is 1: 25.
In the step III, the preparation method of the mixed solution comprises the following steps: respectively weighing 110 parts of 65% ethanol solution, 18 parts of nano silver, 6 parts of quaternary ammonium salt bactericide, 7 parts of nano powder and 3.5 parts of surfactant according to the weight components; then, under the frequency of 28kHz, ultrasonically dispersing the raw materials for 15min to obtain a finished product of the mixed solution.
The quaternary ammonium salt bactericide is dodecyl dimethyl benzyl ammonium chloride.
The nano powder is prepared by mixing nano titanium dioxide and nano zinc oxide according to the mass ratio of 1: 1.8.
The surfactant is lauryl glucoside.
In the step III, lauroyl peroxide is used as an initiator, and the dosage of the lauroyl peroxide is 0.5 percent of that of 4-propenyloxy-2-hydroxybenzophenone.
In the step III, acetone is selected as the organic solvent, and the drying temperature of the non-woven fabric is set to 65 ℃.
Example 3
The preparation method of the high-strength black conductive non-woven fabric is characterized by comprising the following steps of:
i, pretreating black polyester staple fibers, bamboo charcoal staple fibers and carbon black conductive staple fibers according to the weight ratio of 9: 1.2: 1.8 mixing; then opening and loosening the black polyester staple fiber, the bamboo charcoal staple fiber and the carbon black conductive staple fiber; carding the opened short fibers into a short fiber net, lapping, and then carrying out needle punching forming treatment to obtain a non-woven fabric blank; storing for later use;
II, transferring the non-woven fabric obtained in the step I into a plasma discharge device, and starting an on-off key of the plasma discharge device and an argon steel cylinder matched with the plasma discharge device; then setting relevant frequency and power parameters of the plasma discharge device, and simultaneously controlling the flow rate of argon gas to be 3.2L/min; when the two electrodes are in a uniform and stable purple state, feeding the non-woven fabric blank into a discharge area, processing the non-woven fabric blank for 35 seconds, and then guiding out the non-woven fabric blank, and storing the pre-processed non-woven fabric blank for later use;
III, dipping the non-woven fabric blank obtained in the step II into a mixed solution at the temperature of 50 ℃, then carrying out ultrasonic dispersion for 15min, and respectively adding 12% by mass of 4-propylene oxy-2-hydroxybenzophenone and a proper amount of initiator into the mixed solution; ultrasonic mixing for 12min, and reacting at 70 deg.C for 45 min; after the reaction is finished, performing secondary soaking and secondary rolling to ensure that the rolling residual rate is 100 percent, then pre-baking at 55 ℃ for 8min, and then baking at 110 ℃ for 5 min; after baking treatment, washing the non-woven fabric by using an organic solvent, transferring the obtained non-woven fabric into a drying box, and drying the non-woven fabric at the temperature of 65 ℃; the obtained product is the finished product of the high-strength black conductive non-woven fabric.
Step I, washing black polyester staple fibers, bamboo charcoal staple fibers and carbon black conductive staple fibers with ethanol, then transferring into a constant-temperature drying oven, and drying at 70 ℃; and after drying, finishing the pretreatment of the black polyester staple fiber, the bamboo charcoal staple fiber and the carbon black conductive staple fiber.
In step II, the frequency of the plasma discharge device is set to 32kHz, and the power is set to 550W.
In the step III, the bath ratio of the non-woven fabric blank in the dipping process is 1: 28.
In the step III, the preparation method of the mixed solution comprises the following steps: respectively weighing 120 parts of ethanol solution with the volume concentration of 70%, 20 parts of nano silver, 7 parts of quaternary ammonium salt bactericide, 8 parts of nano powder and 4.0 parts of surfactant according to the weight components; and then, ultrasonically dispersing the raw materials for 15min at the frequency of 32kHz to obtain a finished product of the mixed solution.
The quaternary ammonium salt bactericide is dodecyl dimethyl benzyl ammonium bromide.
The nano powder is prepared by mixing nano titanium dioxide and nano zinc oxide according to the mass ratio of 1: 2.0.
The surfactant is cetearyl glucoside.
In the step III, benzoyl peroxide is selected as the initiator, and the dosage of the benzoyl peroxide is 0.5 percent of that of 4-propylene oxy-2-hydroxybenzophenone.
In the step III, acetone is selected as the organic solvent, and the drying temperature of the non-woven fabric is set to be 70 ℃.
Example 4
The preparation method of the high-strength black conductive non-woven fabric is characterized by comprising the following steps of:
i, pre-treating black polyester staple fibers, bamboo charcoal staple fibers and carbon black conductive staple fibers according to the weight ratio of 10: 1.4: 2.0 mixing; then opening and loosening the black polyester staple fiber, the bamboo charcoal staple fiber and the carbon black conductive staple fiber; carding the opened short fibers into a short fiber net, lapping, and then carrying out needle punching forming treatment to obtain a non-woven fabric blank; storing for later use;
II, transferring the non-woven fabric obtained in the step I into a plasma discharge device, and starting an on-off key of the plasma discharge device and an argon steel cylinder matched with the plasma discharge device; then setting relevant frequency and power parameters of the plasma discharge device, and simultaneously controlling the flow rate of argon gas to be 3.6L/min; when the two electrodes are in a uniform and stable purple state, feeding the non-woven fabric blank into a discharge area, processing the non-woven fabric blank for 40s, and then guiding out, and storing the obtained pre-processed non-woven fabric blank for later use;
III, dipping the non-woven fabric blank obtained in the step II into the mixed solution at the temperature of 55 ℃, then carrying out ultrasonic dispersion for 20min, and respectively adding 18% by mass of 4-propylene oxy-2-hydroxybenzophenone and a proper amount of initiator into the mixed solution; ultrasonic mixing for 15min, and reacting at 75 deg.C for 50 min; after the reaction is finished, performing secondary soaking and secondary rolling to ensure that the rolling residual rate is 100 percent, then pre-baking at 60 ℃ for 10min, and then baking at 120 ℃ for 4 min; after baking treatment, washing the non-woven fabric by using an organic solvent, transferring the obtained non-woven fabric into a drying box, and drying the non-woven fabric at the temperature of 70 ℃; the obtained product is the finished product of the high-strength black conductive non-woven fabric.
Step I, washing black polyester staple fibers, bamboo charcoal staple fibers and carbon black conductive staple fibers with ethanol, then transferring into a constant-temperature drying oven, and drying at 75 ℃; and after drying, finishing the pretreatment of the black polyester staple fiber, the bamboo charcoal staple fiber and the carbon black conductive staple fiber.
In step II, the frequency of the plasma discharge device is set to 35kHz, and the power is set to 600W.
In the step III, the bath ratio of the non-woven fabric blank in the dipping process is 1: 30.
In the step III, the preparation method of the mixed solution comprises the following steps: respectively weighing 130 parts of ethanol solution with volume concentration of 75%, 25 parts of nano silver, 8 parts of quaternary ammonium salt bactericide, 10 parts of nano powder and 4.2 parts of surfactant according to the weight components; and then ultrasonically dispersing the raw materials for 20min at the frequency of 35kHz to obtain a finished product of the mixed solution.
The quaternary ammonium salt bactericide is dodecyl trimethyl ammonium chloride.
The nano powder is prepared by mixing nano titanium dioxide and nano zinc oxide according to the mass ratio of 1: 2.5.
The surfactant is coco glucoside.
In the step III, lauroyl peroxide is used as an initiator, and the dosage of the lauroyl peroxide is 0.6 percent of that of 4-propenyloxy-2-hydroxybenzophenone.
In the step III, acetone is selected as the organic solvent, and the drying temperature of the non-woven fabric is set to be 75 ℃.
Comparative example: black conductive non-woven fabric produced by Shenzhen, a certain packaging material Limited company;
performance testing
The black conductive nonwoven fabrics prepared by examples 1 to 4 of the present invention were respectively referred to as experimental examples 1 to 4; then, the black conductive nonwoven fabrics prepared in examples 1 to 4 and the black conductive nonwoven fabric provided in the comparative example were subjected to performance tests, and each set of the obtained data was recorded in tables 1 and 2:
TABLE 1
TABLE 2
As can be seen from the relevant data in tables 1 and 2, the non-woven fabric prepared according to the present invention has not only good conductivity, but also good anti-aging performance and antibacterial performance, and simultaneously, the mechanical properties (strength) thereof are relatively excellent, thereby effectively ensuring the quality and quality of the non-woven fabric. Therefore, the black conductive non-woven fabric prepared by the method has wider market prospect and is more suitable for popularization.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. The preparation method of the high-strength black conductive non-woven fabric is characterized by comprising the following steps of:
i, pretreating black polyester staple fibers, bamboo charcoal staple fibers and carbon black conductive staple fibers according to the weight ratio of 7-10: 0.8-1.4: 1.5-2.0 mixing; then opening and loosening the black polyester staple fiber, the bamboo charcoal staple fiber and the carbon black conductive staple fiber; carding the opened short fibers into a short fiber net, lapping, and then carrying out needle punching forming treatment to obtain a non-woven fabric blank; storing for later use;
II, transferring the non-woven fabric obtained in the step I into a plasma discharge device, and starting an on-off key of the plasma discharge device and an argon steel cylinder matched with the plasma discharge device; then setting relevant frequency and power parameters of the plasma discharge device, and simultaneously controlling the flow rate of argon gas to be 2.5-3.6L/min; when the two electrodes are in a uniform and stable purple state, feeding the non-woven fabric blank into a discharge area, treating the non-woven fabric blank for 30-40 s, and then guiding out, and storing the pre-treated non-woven fabric blank for later use;
III, dipping the non-woven fabric blank obtained in the step II into a mixed solution at the temperature of 40-55 ℃, then carrying out ultrasonic dispersion for 10-20 min, and respectively adding 5-18% by mass of 4-propenyloxy-2-hydroxybenzophenone and a proper amount of an initiator into the mixed solution; carrying out ultrasonic mixing for 8-15 min, and then reacting for 40-50 min at the temperature of 60-75 ℃; after the reaction is finished, performing secondary soaking and secondary rolling to ensure that the rolling residual rate is 100%, then pre-drying at 50-60 ℃ for 5-10 min, and then baking at 100-120 ℃ for 4-8 min; after baking treatment, washing the non-woven fabric by using an organic solvent, transferring the obtained non-woven fabric into a drying box, and drying the non-woven fabric at the temperature of 60-70 ℃; the obtained product is the finished product of the high-strength black conductive non-woven fabric.
2. The method for preparing a high-strength black conductive non-woven fabric according to claim 1, wherein the method comprises the following steps: in the step I, washing black polyester staple fibers, bamboo charcoal staple fibers and carbon black conductive staple fibers with ethanol, then transferring into a constant-temperature drying oven, and drying at 60-75 ℃; and after drying, finishing the pretreatment of the black polyester staple fiber, the bamboo charcoal staple fiber and the carbon black conductive staple fiber.
3. The method for preparing a high-strength black conductive non-woven fabric according to claim 1, wherein the method comprises the following steps: in the step II, the frequency of the plasma discharge device is set to be 20-35 kHz, and the power is set to be 400-600W.
4. The method for preparing a high-strength black conductive non-woven fabric according to claim 1, wherein the method comprises the following steps: in the step III, the bath ratio of the non-woven fabric blank in the dipping process is 1: 20-30.
5. The method for preparing a high-strength black conductive non-woven fabric according to claim 1, wherein in the step III, the preparation method of the mixed solution comprises the following steps: respectively weighing 100-130 parts by weight of 60-75% volume concentration ethanol solution, 15-25 parts by weight of nano silver, 5-8 parts by weight of quaternary ammonium salt bactericide, 6-10 parts by weight of nano powder and 2.8-4.2 parts by weight of surfactant; and then ultrasonically dispersing the raw materials for 10-20 min at the frequency of 25-35 kHz to obtain a finished product of the mixed solution.
6. The method for preparing a high-strength black conductive non-woven fabric according to claim 5, wherein the method comprises the following steps: the quaternary ammonium salt bactericide is any one of dodecyl trimethyl ammonium chloride, dodecyl dimethyl benzyl ammonium chloride and dodecyl dimethyl benzyl ammonium bromide.
7. The method for preparing a high-strength black conductive non-woven fabric according to claim 5, wherein the method comprises the following steps: the nano powder is prepared by mixing nano titanium dioxide and nano zinc oxide according to the mass ratio of 1: 1.5-2.5.
8. The method for preparing a high-strength black conductive non-woven fabric according to claim 5, wherein the method comprises the following steps: the surfactant is selected from one of coco glucoside, lauryl glucoside and cetearyl glucoside.
9. The method for preparing a high-strength black conductive non-woven fabric according to claim 1, wherein the method comprises the following steps: in the step III, the initiator is any one of benzoyl peroxide and lauroyl peroxide, and the dosage of the initiator is 0.4-0.6% of 4-propenyloxy-2-hydroxybenzophenone.
10. The method for preparing a high-strength black conductive non-woven fabric according to claim 1, wherein the method comprises the following steps: in the step III, acetone is selected as the organic solvent, and the drying temperature of the non-woven fabric is set to be 60-75 ℃.
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