A method for preparing antibacterial blended underwear fabric

Abstract

The present invention relates to a method for preparing an antibacterial blended underwear fabric. The method uses cotton, antibacterial viscose fiber, and hemp to weave with a single-sided weft-knitted plain needle structure to obtain a blended fabric; the fabric is pre-treated, dyed, soaped, shaped, and finished to obtain an antibacterial blended underwear fabric; after the antibacterial viscose fiber of the present invention is treated by plasma, an active amino group is introduced into the surface of the viscose fiber, the surface of the viscose fiber is modified, and the chemical active points on its surface are increased; under the catalysis of the amino group, the sulfhydryl group in papain and the olefin part in vinylguanamine undergo Michael addition reaction, so that the original double bond is opened to form a new C-S bond; after the above reaction, a layer of film containing protein-guanidine adduct is formed on the surface of the viscose fiber yarn, thereby changing the surface chemical composition of the fiber, and introducing a guanidine group with antibacterial function, so that the underwear fabric still maintains antibacterial performance in long-term use.

Description

Technical Field

[0001] The invention relates to the technical field of underwear fabrics, in particular to a method for preparing antibacterial blended underwear fabrics. Background Art

[0002] At present, most underwear fabrics on the market are mainly cotton and viscose fibers. Cotton fiber has good moisture absorption and warmth retention, and is moderately priced; viscose fiber has the characteristics of smoothness, coolness, breathability, anti-static, UV protection, bright colors, good color fastness, etc., and is slightly more expensive than cotton. Each single fabric has its own advantages and disadvantages, and the overall comfort level is difficult to meet the requirements of consumers.

[0003] Chinese patent CN103494353B: discloses a soybean protein fiber and bamboo fiber blended underwear fabric, which is made of 40-60wt% bamboo fiber and 40-60wt% soybean protein fiber.

[0004] Chinese patent CN103494355B: discloses a pearl fiber and bamboo fiber blended underwear fabric, which is made of 40-60wt% bamboo fiber and 40-60wt% pearl fiber.

[0005] Chinese patent CN102524967A: discloses an antibacterial underwear fabric, which is mainly designed for the current underwear and underwear fabrics that do not have antibacterial and antibacterial functions. The invention refines perfluoroethylene propylene into a plush bulked material, processes it through electret corona method or breakdown method and other electret technologies, and then mixes the perfluoroethylene propylene electret plush material with cotton fiber, cashmere, silk, chemical fiber, etc. to form a blended underwear fabric.

[0006] According to the above patents and prior art, the underwear fabric prepared by the present invention has poor color fastness to sweat stains and is prone to problems such as white spots, color spots, and uneven coloring. In addition, its antibacterial property and softness and comfort are poor. Summary of the invention

[0007] In order to solve the above problems, the present invention provides a method for preparing an antibacterial blended underwear fabric, and the operating steps are as follows:

[0008] S1: 30-40 parts of cotton, 30-40 parts of antibacterial viscose fiber, and 10-20 parts of hemp are fed into a single-sided circular knitting machine and woven using a single-sided weft knitting plain needle structure to obtain a blended fabric;

[0009] S2: put 10-20 parts of blended fabric into 80-100 parts of deionized water, add 0.5-2 parts of low-alkali bleaching and refining O'Nolan SuperBlue and 1-5 parts of hydrogen peroxide, heat to 90-96℃, soak for 40-50min, cool to 40-50℃, add 0.1-0.5 parts of deoxygenase MCH-S105, continue soaking for 10-15min, dehydrate and dry;

[0010] S3: put 10-20 parts of blended fabric into 80-100 parts of deionized water, add 0.1-0.5 parts of dye, 50-60 parts of sodium sulfate, 0.5-2 parts of soda ash, 0.5-2.5 parts of color fixing base, heat to 50-60°C, soak for 40-60 minutes, dehydrate, and dry;

[0011] S4: Add 0.02-0.2 parts of soaping agent to 10-20 parts of blended fabric, raise the temperature to 85-95°C, soap wash for 10-15 minutes, cool to 40-50°C, wash with water for 10-20 minutes, dehydrate, and dry;

[0012] S5: feeding the blended fabric into a setting machine, cooling it to room temperature after setting, and finishing it to obtain the antibacterial blended underwear fabric.

[0013] In the above technical solution, the dye is reactive brilliant red or reactive golden yellow.

[0014] In the above technical solution, the color-fixing base is one of the color-fixing base SH-T, the color-fixing base SH, and the color-fixing base SH-G.

[0015] In the above technical solution, the soaping agent is one of Albatex AD, Albatex DS, Albatex AB-45 and Albatex AB-55.

[0016] In the above technical solution, the setting temperature is 150-160°C and the time is 50-70s.

[0017] In the above technical solution, the pretreatment method of the antibacterial viscose fiber is:

[0018] H1: by weight, 5-8 parts of papain CAS No.: 9001-73-4, 20-30 parts of silk protein CAS 96690-41-4, 0.06-0.6 parts of vinylguanamine, and 2000-2600 parts of deionized water are stirred at 60-70°C until completely dissolved to obtain a protein solution;

[0019] H2: placing the viscose fiber cheese yarn on a pay-off stand, and the other end of the yarn enters the drafting device for drafting. A slurry pool is arranged between the pay-off stand and the drafting device, and the slurry pool is filled with the protein solution prepared in step H1. When the yarn passes through the top of the slurry pool, the middle of the yarn is below the liquid level of the slurry pool; a plurality of hair dryers are also arranged between the slurry pool and the drafting device to perform airflow-assisted drying on the viscose fiber yarn; the pay-off stand is controlled to pay off the yarn at a certain speed, so that when the yarn passes through the top of the slurry pool, the time it is below the liquid level is 25-50 seconds, and the drying time is 100-150 seconds;

[0020] H3: Plasma treatment of H2 treated yarn.

[0021] In the above technical solution, the plasma treatment parameters are: the power frequency is set to 13.56 MHz radio frequency, the power is 50-100 watts, the operating pressure is 50-100 mTorr, and the treatment time is 20-40 minutes.

[0022] In the above technical solution, the gas for plasma treatment is a mixed gas with a volume ratio of hydrogen to nitrogen of 1:0.2-0.6 and a flow rate of 15-30 ml / min.

[0023] Reaction mechanism

[0024] 1. Hydrogen and nitrogen plasma treatment: Through plasma treatment, active amino (-NH2) groups are introduced into the surface of viscose fiber; this treatment utilizes the reactive centers in the plasma to modify the surface of viscose fiber and increase the chemically active points on its surface.

[0025] 2. Thiol-olefin addition reaction: Under the catalysis of amino groups, the thiol (-SH) in papain undergoes Michael addition reaction with the olefin part in vinylguanamine; this reaction is a typical nucleophilic addition reaction, in which the thiol in papain acts as a nucleophilic reagent to attack the β-carbon atom in vinylguanamine, causing the original double bond to open and form a new CS bond.

[0026] 3. Formation of protein-guanidine adduct: After the above reaction, a thin film containing protein-guanidine adduct is formed on the surface of the viscose fiber yarn; this film not only changes the surface chemical composition of the fiber, but also introduces guanidine groups with antibacterial function.

[0027] Technical Effects

[0028] Compared with the prior art, the present invention has the following advantages:

[0029] 1. Antibacterial function: The guanidine group in the protein-guanidine adduct has strong antibacterial properties. The guanidine group can destroy the bacterial cell wall, causing the leakage of cell contents, thereby killing or inhibiting the growth of bacteria.

[0030] 2. Durability: Since the protein-guanidine adduct is connected to the viscose fiber through chemical bonds, the antibacterial property is more durable and does not fall off easily like surface coatings.

[0031] 3. Non-release mechanism: The antibacterial ingredients are fixed on the fiber surface and do not play an antibacterial role by being released into the environment, reducing the potential impact on the human body and the environmental burden.

[0032] 4. Enhanced physical stability: The antibacterial layer formed by plasma treatment and chemical bonding enhances the durability and washing stability of the fabric, allowing the underwear fabric to maintain its antibacterial properties during long-term use. DETAILED DESCRIPTION

[0033] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following is a detailed description in combination with embodiments and comparative examples:

[0034] 1. Color fastness to perspiration: Tested in accordance with GB / T3922-2013;

[0035] 2. Antibacterial rate: Tested with reference to the oscillation method of FZ / T73023-2006 "Antibacterial knitwear".

[0036] Example 1

[0037] A method for preparing antibacterial blended underwear fabric, the operating steps are:

[0038] S1: 30g cotton, 30g antibacterial viscose fiber and 10g hemp are fed into a single-sided circular knitting machine and woven using a single-sided weft knitting plain needle structure to obtain a blended fabric;

[0039] S2: Put 10g blended fabric into 80g deionized water, add 0.5g low-alkali bleached and refined O'Nolan SuperBlue and 1g hydrogen peroxide, heat to 90℃, soak for 40min, cool to 40℃, add 0.1g deoxygenase MCH-S105, continue soaking for 10min, dehydrate and dry;

[0040] S3: put 10g blended fabric into 80g deionized water, add 0.1g dye, 50g sodium sulfate, 0.5g soda ash, 0.5g color fixing base, heat to 50°C, soak for 40min, dehydrate and dry;

[0041] S4: Add 0.02g of soaping agent to 10g of blended fabric, heat to 85℃, soap for 10min, cool to 40℃, wash with water for 10min, dehydrate, and dry;

[0042] S5: feeding the blended fabric into a setting machine, cooling it to room temperature after setting, and finishing it to obtain the antibacterial blended underwear fabric.

[0043] The dye is reactive brilliant red.

[0044] The fixing base is fixing base SH-T.

[0045] The soaping agent is Albatex AD.

[0046] The setting temperature is 150° C. and the time is 50 seconds.

[0047] The pretreatment method of the antibacterial viscose fiber is:

[0048] H1: 5 g papain CAS No.: 9001-73-4, 20 g silk protein CAS 96690-41-4, 0.06 g vinylguanamine, and 2000 g deionized water were stirred at 60°C until completely dissolved to obtain a protein solution;

[0049] H2: placing the viscose fiber cheese yarn on a pay-off stand, and the other end of the yarn enters the drafting device for drafting. A slurry pool is arranged between the pay-off stand and the drafting device, and the slurry pool is filled with the protein solution prepared in step H1. When the yarn passes over the slurry pool, the middle of the yarn is below the liquid level of the slurry pool; a plurality of hair dryers are also arranged between the slurry pool and the drafting device to perform airflow-assisted drying on the viscose fiber yarn; the pay-off stand is controlled to pay off the yarn at a certain speed, so that when the yarn passes over the slurry pool, the time it is below the liquid level is 25 seconds, and the drying time is 100 seconds;

[0050] H3: Plasma treatment of H2 treated yarn.

[0051] The plasma treatment parameters are: the power frequency is set to 13.56 MHz radio frequency, the power is 50 watts, the operating pressure is 50 mTorr, and the treatment time is 20 minutes.

[0052] The plasma treatment gas is a mixed gas of hydrogen and nitrogen with a volume ratio of 1:0.2 and a flow rate of 15 ml / min.

[0053] Example 2

[0054] A method for preparing antibacterial blended underwear fabric, the operating steps are:

[0055] S1: 33g cotton, 34g antibacterial viscose fiber, and 13g hemp are fed into a single-sided circular knitting machine and woven using a single-sided weft knitting plain needle structure to obtain a blended fabric;

[0056] S2: Put 13g blended fabric into 85g deionized water, add 1g low-alkali bleached and refined O'Nolan SuperBlue and 2g hydrogen peroxide, heat to 92°C, soak for 45min, cool to 45°C, add 0.2g deoxygenase MCH-S105, continue soaking for 12min, dehydrate and dry;

[0057] S3: put 13g blended fabric into 85g deionized water, add 0.2g dye, 53g sodium sulfate, 1g soda ash, 1g color fixing base, heat to 55°C, soak for 45min, dehydrate and dry;

[0058] S4: Add 0.1 g of soaping agent to 13 g of blended fabric, heat to 88 ° C, soap for 12 min, cool to 45 ° C, wash with water for 15 min, dehydrate, and dry;

[0059] S5: feeding the blended fabric into a setting machine, cooling it to room temperature after setting, and finishing it to obtain the antibacterial blended underwear fabric.

[0060] The dye is reactive brilliant red.

[0061] The fixing base is fixing base SH.

[0062] The soaping agent is Albatex DS.

[0063] The setting temperature is 155° C. and the setting time is 55 seconds.

[0064] The pretreatment method of the antibacterial viscose fiber is:

[0065] H1: 5 g papain CAS No.: 9001-73-4, 23 g silk protein CAS 96690-41-4, 0.2 g vinylguanamine, and 2200 g deionized water were stirred at 65°C until completely dissolved to obtain a protein solution;

[0066] H2: placing the viscose fiber cheese yarn on a pay-off stand, and the other end of the yarn enters the drafting device for drafting. A slurry pool is arranged between the pay-off stand and the drafting device, and the slurry pool is filled with the protein solution prepared in step H1. When the yarn passes over the slurry pool, the middle of the yarn is below the liquid level of the slurry pool; a plurality of hair dryers are also arranged between the slurry pool and the drafting device to perform airflow-assisted drying on the viscose fiber yarn; the pay-off stand is controlled to pay off the yarn at a certain speed, so that when the yarn passes over the slurry pool, the time under the liquid level is 35 seconds, and the drying time is 110 seconds;

[0067] H3: Plasma treatment of H2 treated yarn.

[0068] The plasma treatment parameters are: the power frequency is set to 13.56 MHz radio frequency, the power is 70 watts, the operating pressure is 70 mTorr, and the treatment time is 205 minutes.

[0069] The plasma treatment gas is a mixed gas of hydrogen and nitrogen with a volume ratio of 1:0.3 and a flow rate of 20 ml / min.

[0070] Example 3

[0071] A method for preparing antibacterial blended underwear fabric, the operating steps are:

[0072] S1: 38g cotton, 38g antibacterial viscose fiber, and 18g hemp are fed into a single-sided circular knitting machine and woven using a single-sided weft knitting plain needle structure to obtain a blended fabric;

[0073] S2: Put 18g blended fabric into 95g deionized water, add 1.5g low-alkali bleached and refined O'Nolan SuperBlue and 4g hydrogen peroxide, heat to 94°C, soak for 45 minutes, cool to 45°C, add 0.4g deoxygenase MCH-S105, continue soaking for 14 minutes, dehydrate and dry;

[0074] S3: put 18g blended fabric into 95g deionized water, add 0.4g dye, 58g sodium sulfate, 1.5g soda ash, 2g color fixing base, heat to 55°C, soak for 55min, dehydrate and dry;

[0075] S4: Add 0.15g of soaping agent to 18g of blended fabric, heat to 93℃, soap wash for 14min, cool to 45℃, wash with water for 15min, dehydrate, and dry;

[0076] S5: feeding the blended fabric into a setting machine, cooling it to room temperature after setting, and finishing it to obtain the antibacterial blended underwear fabric.

[0077] The dye is active golden yellow.

[0078] The fixing base is fixing base SH.

[0079] The soaping agent is Albatex AB-45.

[0080] The setting temperature is 155° C. and the time is 65 seconds.

[0081] The pretreatment method of the antibacterial viscose fiber is:

[0082] H1: 7 g papain CAS No.: 9001-73-4, 28 g silk protein CAS 96690-41-4, 0.4 g vinylguanamine, and 2400 g deionized water were stirred at 65°C until completely dissolved to obtain a protein solution;

[0083] H2: placing the viscose fiber cheese yarn on a pay-off stand, and the other end of the yarn enters the drafting device for drafting. A slurry pool is arranged between the pay-off stand and the drafting device, and the slurry pool is filled with the protein solution prepared in step H1. When the yarn passes over the slurry pool, the middle of the yarn is below the liquid level of the slurry pool; a plurality of hair dryers are also arranged between the slurry pool and the drafting device to perform airflow-assisted drying on the viscose fiber yarn; the pay-off stand is controlled to pay off the yarn at a certain speed, so that when the yarn passes over the slurry pool, the yarn is below the liquid level for 45 seconds, and the drying time is 140 seconds;

[0084] H3: Plasma treatment of H2 treated yarn.

[0085] The plasma treatment parameters are: the power frequency is set to 13.56 MHz radio frequency, the power is 90 watts, the operating pressure is 90 mTorr, and the treatment time is 35 minutes.

[0086] The plasma treatment gas is a mixed gas of hydrogen and nitrogen with a volume ratio of 1:0.5 and a flow rate of 25 ml / min.

[0087] Example 4

[0088] A method for preparing antibacterial blended underwear fabric, the operating steps are:

[0089] S1: 40g of cotton, 40g of antibacterial viscose fiber, and 20g of hemp are fed into a single-sided circular knitting machine and woven using a single-sided weft knitting plain needle structure to obtain a blended fabric;

[0090] S2: put 20g blended fabric into 100g deionized water, add 2g low-alkali bleached and refined O'Nolan SuperBlue and 5g hydrogen peroxide, heat to 96℃, soak for 50min, cool to 50℃, add 0.5g deoxygenase MCH-S105, continue soaking for 15min, dehydrate and dry;

[0091] S3: put 20g blended fabric into 100g deionized water, add 0.5g dye, 60g sodium sulfate, 2g soda ash, 2.5g color fixing base, heat to 60℃, soak for 60min, dehydrate and dry;

[0092] S4: Add 0.2g of soaping agent to 20g of blended fabric, heat to 95℃, soap for 15min, cool to 50℃, wash with water for 20min, dehydrate, and dry;

[0093] S5: feeding the blended fabric into a setting machine, cooling it to room temperature after setting, and finishing it to obtain the antibacterial blended underwear fabric.

[0094] The dye is active golden yellow.

[0095] The color fixing base is color fixing base SH-G.

[0096] The soaping agent is Albatex AB-55.

[0097] The setting temperature is 160° C. and the time is 70 seconds.

[0098] The pretreatment method of the antibacterial viscose fiber is:

[0099] H1: 8 g papain CAS No.: 9001-73-4, 30 g silk protein CAS 96690-41-4, 0.6 g vinylguanamine, and 2600 g deionized water were stirred at 70°C until completely dissolved to obtain a protein solution;

[0100] H2: placing the viscose fiber cheese yarn on a pay-off stand, and the other end of the yarn enters the drafting device for drafting. A slurry pool is arranged between the pay-off stand and the drafting device, and the slurry pool is filled with the protein solution prepared in step H1. When the yarn passes over the slurry pool, the middle of the yarn is below the liquid level of the slurry pool; a plurality of hair dryers are also arranged between the slurry pool and the drafting device to perform airflow-assisted drying on the viscose fiber yarn; the pay-off stand is controlled to pay off the yarn at a certain speed, so that when the yarn passes over the slurry pool, the yarn is below the liquid level for 50 seconds, and the drying time is 150 seconds;

[0101] H3: Plasma treatment of H2 treated yarn.

[0102] The plasma treatment parameters are: the power frequency is set to 13.56 MHz radio frequency, the power is 100 watts, the operating pressure is 100 mTorr, and the treatment time is 40 minutes.

[0103] The plasma treatment gas is a mixed gas of hydrogen and nitrogen with a volume ratio of 1:0.6 and a flow rate of 30 ml / min.

[0104] Comparative Example 1

[0105] In this example, the antibacterial viscose fiber is not pretreated, and the rest is the same as in Example 1.

[0106] Comparative Example 2

[0107] In this example, papain was not added, and the other steps were the same as in Example 1.

[0108] Comparative Example 3

[0109] In this example, vinylguanamine was not added, and the other steps were the same as in Example 1.

[0110] The test results are as follows:

[0111] Color fastness to perspiration / grade Antibacterial rate / % Example 1 5 97.9 Example 2 5 98.3 Example 3 5 98.8 Example 4 5 99.2 Comparative Example 1 3 82.6 Comparative Example 2 4 88.7 Comparative Example 3 4 90.1

[0112] Through the data analysis of the above embodiments and comparative examples, the antibacterial blended underwear fabric prepared by the present invention has high color fastness to sweat stains and excellent antibacterial rate.

[0113] Through the above specific implementations, those skilled in the art can easily implement the present invention. However, it should be understood that the present invention is not limited to the above specific implementations. On the basis of the disclosed implementations, those skilled in the art can arbitrarily combine different technical features to achieve different technical solutions.

Claims

1. A method for preparing antibacterial blended underwear fabric, the operating steps of which are: S1: According to the weight proportions, 30-40 parts of cotton, 30-40 parts of antibacterial viscose fiber, and 10-20 parts of hemp are fed into a single-sided circular knitting machine, and a single-sided weft knitting plain needle structure is used for weaving to obtain a blended fabric; S2: put 10-20 parts of blended fabric into 80-100 parts of deionized water, add 0.5-2 parts of low-alkali bleaching and refining O'Nolan SuperBlue and 1-5 parts of hydrogen peroxide, heat to 90-96℃, soak for 40-50min, cool to 40-50℃, add 0.1-0.5 parts of deoxygenase MCH-S105, continue soaking for 10-15min, dehydrate and dry; S3: put 10-20 parts of blended fabric into 80-100 parts of deionized water, add 0.1-0.5 parts of dye, 50-60 parts of sodium sulfate, 0.5-2 parts of soda ash, 0.5-2.5 parts of color fixing base, heat to 50-60°C, soak for 40-60 minutes, dehydrate, and dry; S4: Add 0.02-0.2 parts of soaping agent to 10-20 parts of blended fabric, raise the temperature to 85-95°C, soap wash for 10-15 minutes, cool to 40-50°C, wash with water for 10-20 minutes, dehydrate, and dry; S5: feeding the blended fabric into a setting machine, cooling it to room temperature after setting, and finishing it to obtain an antibacterial blended underwear fabric; The pretreatment method of the antibacterial viscose fiber is: H1: by weight, 5-8 parts of papain, 20-30 parts of silk protein, 0.06-0.6 parts of vinylguanamine, and 2000-2600 parts of deionized water are stirred at 60-70° C. until completely dissolved to obtain a protein solution; H2: placing the viscose fiber cheese yarn on a pay-off stand, and the other end of the yarn enters the drafting device for drafting. A slurry pool is arranged between the pay-off stand and the drafting device, and the slurry pool is filled with the protein solution prepared in step H1. When the yarn passes through the top of the slurry pool, the middle of the yarn is below the liquid level of the slurry pool; a plurality of hair dryers are also arranged between the slurry pool and the drafting device to perform airflow-assisted drying on the viscose fiber yarn; the pay-off stand is controlled to pay off the yarn at a certain speed, so that when the yarn passes through the top of the slurry pool, the time it is below the liquid level is 25-50 seconds, and the drying time is 100-150 seconds; H3: plasma treatment of yarn treated with H2; The plasma treatment parameters are: the power frequency is set to 13.56 MHz radio frequency, the power is 50-100 watts, the operating pressure is 50-100 mTorr, and the treatment time is 20-40 minutes; The gas for the plasma treatment is a mixed gas with a volume ratio of hydrogen to nitrogen of 1:0.2-0.6 and a flow rate of 15-30 ml / min.

2. The method for preparing an antibacterial blended underwear fabric according to claim 1, characterized in that: The dye is reactive brilliant red or reactive golden yellow.

3. The method for preparing an antibacterial blended underwear fabric according to claim 1, characterized in that: The color-fixing base is one of the color-fixing base SH-T, the color-fixing base SH and the color-fixing base SH-G.

4. The method for preparing an antibacterial blended underwear fabric according to claim 1, characterized in that: The soaping agent is one of Albatex AD, Albatex DS, Albatex AB-45 and Albatex AB-55.

5. The method for preparing an antibacterial blended underwear fabric according to claim 1, characterized in that: The setting temperature is 150-160° C. and the time is 50-70 seconds.