An antibacterial treatment process for hair fibers

Abstract

An antibacterial treatment process for hair fibers. In order to impart certain antibacterial properties to wig fibers, a composite antibacterial agent of tungsten trioxide / zinc silicate is added to the wig fiber material. Studies have shown that this composite antibacterial agent can significantly improve its antibacterial properties, and when both antibacterial agents are used together, even more superior antibacterial effects can be obtained. In the most preferred embodiment, the antibacterial rate is close to 100%.

Description

Technical Field

[0001] This invention relates to the field of wigs, and more specifically to an antibacterial treatment process for hair fibers. Background Technology

[0002] With the overall improvement of living standards, people's enthusiasm for fashion is rising, and wigs have become one of the most widely used accessories. To give wigs antibacterial properties, some existing technologies use silver as an antibacterial agent. However, the high price of silver increases the cost of wigs, severely limiting its widespread application. To reduce the amount of silver used, Chinese patent CN202310564334.0 uses atomic layer deposition to prepare a nanoscale copper antibacterial film on the surface of wig fibers. While this process can produce wigs with excellent antibacterial and breakage resistance, the manufacturing process involves two major steps: spinning and coating, making it complex. Therefore, it is necessary to design a wig with antibacterial properties and a simple manufacturing process. Summary of the Invention

[0003] The purpose of this invention is to provide an antibacterial treatment process for hair fibers, which can obtain hair fibers with excellent antibacterial properties.

[0004] The technical solution of the present invention is as follows: An antibacterial treatment process for hair fibers includes the following steps: An acrylic polymer prepared from 52-55 wt% acrylonitrile, 46.5-50 wt% vinylidene chloride, and 1.5-1.8 wt% sodium styrene sulfonate is dissolved in acetone to make the resin concentration 26-30 wt%. Then, 2.5-9 wt% tungsten trioxide powder and 2.5-9 wt% zinc silicate powder are added and stirred thoroughly to obtain a viscous spinning solution with uniformly distributed antibacterial components. The spinning solution is spun using a spinneret with a length-to-width ratio (L / W) of 1.42-1.5 and 6-8 protrusions connected radially, an orifice diameter of φ0.3-0.5, and 50-55 orifices. A spinneret traction coefficient of 0.9-1.0 is used. Spinning is performed at 20-22°C in an acetone / water environment with an acetone concentration of 36-40% by weight. The solution is then introduced into a water bath at 50-53°C, and pre-stretched by 1.9-2.1 times while being washed with water. The fiber material for wigs with antibacterial properties is prepared by drying and restoring devitrification in a humid and hot environment with a dry heat temperature of 120-125℃ and a wet bulb temperature of 80-82℃, followed by a 2.2-2.3 times hot stretching and then a 10-12% relaxation heat treatment in a dry and hot environment at 160-165℃.

[0005] Preferably, the acrylonitrile is 55% by weight.

[0006] Preferably, the vinylidene chloride is 50% by weight.

[0007] Preferably, the sodium styrene sulfonate is 1.5% by weight.

[0008] Preferably, the tungsten trioxide powder is about 2.5 wt%.

[0009] Preferably, the zinc silicate powder is 2.5 wt%.

[0010] Preferably, the dry heat temperature is 120°C.

[0011] To impart antibacterial properties to wig fibers, this invention adds a composite antibacterial agent, tungsten trioxide / zinc silicate, to the wig fiber material. Studies have shown that this composite antibacterial agent can significantly improve its antibacterial properties, and a superior antibacterial effect can be obtained when both antibacterial agents are used simultaneously. In the most preferred embodiment, the antibacterial rate is close to 100%. Detailed Implementation

[0012] The technical effects of the present invention will be verified through specific embodiments below, but the implementation of the present invention is not limited thereto. Example 1

[0013] An acrylic polymer prepared from 52 wt% acrylonitrile, 46.5 wt% vinylidene chloride, and 1.5 wt% sodium styrene sulfonate was dissolved in acetone to make the resin concentration 26 wt%. 2.5 wt% tungsten trioxide powder and 2.5 wt% zinc silicate powder were added and stirred thoroughly to obtain a viscous spinning solution with uniformly distributed antibacterial components. The spinning solution was spun using a spinneret with a length-to-width ratio of 1.42 for the protruding portion and a cross-sectional shape having 6 protrusions connected radially, an orifice diameter equivalent to φ0.3, and 50 orifices. A spinneret traction coefficient of 0.9 was used. The spinning was carried out at 20°C in an acetone / water environment with an acetone concentration of 36% by weight. The solution was then introduced into a water bath at 53°C and pre-stretched by 1.9 times while being washed with water. The fiber material for wigs is prepared by drying and restoring devitrification in a humid and hot environment with a dry heat temperature of 125°C and a wet bulb temperature of 80°C, followed by a 2.2-fold hot stretching and a 10% relaxation heat treatment in a dry and hot environment at 160°C. Example 2

[0014] An acrylic polymer prepared from 52 wt% acrylonitrile, 46.5 wt% vinylidene chloride and 1.5 wt% sodium styrene sulfonate was dissolved in acetone to make the resin concentration 26 wt%. 4 wt% tungsten trioxide powder and 4 wt% zinc silicate powder were added and stirred thoroughly to obtain a viscous spinning solution with uniformly distributed antibacterial components. The spinning solution was spun using a spinneret with a length-to-width ratio of 1.42 for the protruding portion and a cross-sectional shape having 6 protrusions connected radially, an orifice diameter equivalent to φ0.3, and 50 orifices. A spinneret traction coefficient of 0.9 was used. The spinning was carried out at 20°C in an acetone / water environment with an acetone concentration of 36% by weight. The solution was then introduced into a water bath at 53°C and pre-stretched by 1.9 times while being washed with water. The fiber material for wigs is prepared by drying and restoring devitrification in a humid environment with a dry heat temperature of 125°C and a wet bulb temperature of 80°C, followed by a 2.2-fold hot stretching and a 10% relaxation heat treatment in a dry heat environment at 160°C. Example 3

[0015] An acrylic polymer prepared from 52 wt% acrylonitrile, 46.5 wt% vinylidene chloride, and 1.5 wt% sodium styrene sulfonate was dissolved in acetone to make the resin concentration 26 wt%. 6.2 wt% tungsten trioxide powder and 4.6 wt% zinc silicate powder were added and stirred thoroughly to obtain a viscous spinning solution with uniformly distributed antibacterial components. The spinning solution was spun using a spinneret with a length-to-width ratio of 1.42 for the protruding portion and a cross-sectional shape having 6 protrusions connected radially, an orifice diameter equivalent to φ0.3, and 50 orifices. A spinneret traction coefficient of 0.9 was used. The spinning was carried out at 20°C in an acetone / water environment with an acetone concentration of 36% by weight. The solution was then introduced into a water bath at 53°C and pre-stretched by 1.9 times while being washed with water. The fiber material for wigs is prepared by drying and restoring devitrification in a humid environment with a dry heat temperature of 125°C and a wet bulb temperature of 80°C, followed by a 2.2-fold hot stretching and a 10% relaxation heat treatment in a dry heat environment at 160°C. Example 4

[0016] An acrylic polymer prepared from 52 wt% acrylonitrile, 46.5 wt% vinylidene chloride, and 1.5 wt% sodium styrene sulfonate was dissolved in acetone to make the resin concentration 26 wt%. 4.6 wt% tungsten trioxide powder and 6.2 wt% zinc silicate powder were added and stirred thoroughly to obtain a viscous spinning solution with uniformly distributed antibacterial components. The spinning solution was spun using a spinneret with a length-to-width ratio of 1.42 for the protruding portion and a cross-sectional shape having 6 protrusions connected radially, an orifice diameter equivalent to φ0.3, and 50 orifices. A spinneret traction coefficient of 0.9 was used. The spinning was carried out at 20°C in an acetone / water environment with an acetone concentration of 36% by weight. The solution was then introduced into a water bath at 53°C and pre-stretched by 1.9 times while being washed with water. The fiber material for wigs is prepared by drying and restoring devitrification in a humid environment with a dry heat temperature of 125°C and a wet bulb temperature of 80°C, followed by a 2.2-fold hot stretching and a 10% relaxation heat treatment in a dry heat environment at 160°C. Example 5

[0017] An acrylic polymer prepared from 52 wt% acrylonitrile, 46.5 wt% vinylidene chloride and 1.5 wt% sodium styrene sulfonate was dissolved in acetone to make the resin concentration 26 wt%. 9 wt% tungsten trioxide powder and 9 wt% zinc silicate powder were added and stirred thoroughly to obtain a viscous spinning solution with uniformly distributed antibacterial components. The spinning solution was spun using a spinneret with a length-to-width ratio of 1.42 for the protruding portion and a cross-sectional shape having 6 protrusions connected radially, an orifice diameter equivalent to φ0.3, and 50 orifices. A spinneret traction coefficient of 0.9 was used. The spinning was carried out at 20°C in an acetone / water environment with an acetone concentration of 36% by weight. The solution was then introduced into a water bath at 53°C and pre-stretched by 1.9 times while being washed with water. The fiber material for wigs is prepared by drying and restoring devitrification in a humid environment with a dry heat temperature of 125°C and a wet bulb temperature of 80°C, followed by a 2.2-fold hot stretching and a 10% relaxation heat treatment in a dry heat environment at 160°C.

[0018] Comparative Example 1 An acrylic polymer prepared from 52 wt% acrylonitrile, 46.5 wt% vinylidene chloride, and 1.5 wt% sodium styrene sulfonate was dissolved in acetone to make the resin concentration 26 wt%. 10.8 wt% tungsten trioxide powder was added and stirred thoroughly to obtain a viscous spinning solution with uniformly distributed antibacterial components. The spinning solution was spun using a spinneret with a length-to-width ratio of 1.42 for the protruding portion and a cross-sectional shape having 6 protrusions connected radially, an orifice diameter equivalent to φ0.3, and 50 orifices. A spinneret traction coefficient of 0.9 was used. The spinning was carried out at 20°C in an acetone / water environment with an acetone concentration of 36% by weight. The solution was then introduced into a water bath at 53°C and pre-stretched by 1.9 times while being washed with water. The fiber material for wigs is prepared by drying and restoring devitrification in a humid environment with a dry heat temperature of 125°C and a wet bulb temperature of 80°C, followed by a 2.2-fold hot stretching and a 10% relaxation heat treatment in a dry heat environment at 160°C.

[0019] Comparative Example 2 An acrylic polymer prepared from 52 wt% acrylonitrile, 46.5 wt% vinylidene chloride, and 1.5 wt% sodium styrene sulfonate was dissolved in acetone to make the resin concentration 26 wt%. 10.8 wt% zinc silicate was added and stirred thoroughly to obtain a viscous spinning solution with uniformly distributed antibacterial components. The spinning solution was spun using a spinneret with a length-to-width ratio of 1.42 for the protruding portion and a cross-sectional shape having 6 protrusions connected radially, an orifice diameter equivalent to φ0.3, and 50 orifices. A spinneret traction coefficient of 0.9 was used. The spinning was carried out at 20°C in an acetone / water environment with an acetone concentration of 36% by weight. The solution was then introduced into a water bath at 53°C and pre-stretched by 1.9 times while being washed with water. The fiber material for wigs is prepared by drying and restoring devitrification in a humid environment with a dry heat temperature of 125°C and a wet bulb temperature of 80°C, followed by a 2.2-fold hot stretching and a 10% relaxation heat treatment in a dry heat environment at 160°C.

[0020] Next, we evaluated the antibacterial activity of the samples in Examples 1-5 and Comparative Examples 1-2 using the following methods: The bacterial concentration was selected as 4×10⁻⁶. 3 Staphylococcus aureus at cfu / ml was used as the test bacterial suspension. 0.2 ml of the test bacterial suspension was added dropwise to the sample surface and incubated for 48 hours at 37℃ and relative humidity (RH) > 90%. The samples were then removed for viable cell counting, and the antibacterial rate was obtained through counting. Five parallel tests were performed for each sample, with a blank sample without added antibacterial agent serving as the control group. The antibacterial rate was calculated using the following formula: R(%)=(AB) / A×100 In the formula: R represents the antibacterial rate; A represents the average number of bacteria recovered in the control group; B represents the average number of bacteria recovered from the example or comparative sample.

[0021] The experimental data are shown in Table 1.

[0022] Table 1 Test data for each sample Example 1 83.2 Example 2 89.7 Example 3 99.8 Example 4 92.7 Example 5 94.6 Comparative Example 1 72.3 Comparative Example 2 65.1 As shown in Table 1, adding antibacterial agents to the fiber materials used in wigs can significantly improve their antibacterial properties. When two antibacterial agents (tungsten trioxide / zinc silicate) are used simultaneously, an even better antibacterial effect can be achieved. In the most preferred embodiment (Example 3), the antibacterial rate is close to 100%.

[0023] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An antibacterial treatment process for hair fibers, characterized in that, The processing technology includes the following steps: An acrylic polymer, prepared from 52-55 wt% acrylonitrile, 46.5-50 wt% vinylidene chloride, and 1.5-1.8 wt% sodium styrene sulfonate, is dissolved in acetone to achieve a resin concentration of 26-30 wt%. Then, 6.2-9 wt% tungsten trioxide powder and 6.2-9 wt% zinc silicate powder are added and thoroughly stirred to obtain a viscous spinning solution with uniformly distributed antibacterial components. The total weight percentage of acrylonitrile, vinylidene chloride, and sodium styrene sulfonate is 100%. The spinning solution is spun using a spinneret with a protrusion length / width ratio of 1.42-1.5 and 6-8 protrusions connected radially, an orifice diameter of φ0.3-0.5 and 50-55 orifices, and a spinneret traction coefficient of 0.9-1.

0. Spinning is carried out at 20-22°C in an acetone / water environment with an acetone concentration of 36-40% by weight. Then, the solution is introduced into a water bath at 50-53°C and pre-stretched by 1.9-2.1 times while being washed with water. The fiber material for wigs with antibacterial properties is prepared by drying and restoring devitrification in a humid and hot environment with a dry heat temperature of 120-125℃ and a wet bulb temperature of 80-82℃, followed by a 2.2-2.3 times hot stretching and then a 10-12% relaxation heat treatment in a dry and hot environment at 160-165℃.

2. An antibacterial treatment process as described in claim 1, characterized in that, The acrylonitrile is 55% by weight.

3. An antibacterial treatment process as described in claim 1, characterized in that, The vinylidene chloride is 50% by weight.

4. An antibacterial treatment process as described in claim 1, characterized in that, The sodium styrene sulfonate is 1.5% by weight.

5. An antibacterial treatment process as described in claim 1, characterized in that, The dry heat temperature is 120°C.