Anti-mite and antibacterial down jacket fabric and preparation method thereof

Abstract

The present invention relates to an anti-mite and antibacterial down jacket fabric and a preparation method thereof, relating to the technical field of clothing fabrics. The fabric comprises, from the outside to the inside, a face layer, a functional membrane, and a base fabric layer; wherein the face layer and the base fabric layer are both woven from a blended yarn of long-staple cotton fiber and nylon fiber, and the raw materials of the functional membrane are composed, by mass percentage, of 20-30% polyurethane, 5-15% wood vinegar powder, 5-10% chitosan, 1-5% nano-silica, and the balance being a solvent. The fabric provided by the present invention has good and durable antibacterial and anti-mite properties, and has good application prospects in the field of down jacket fabrics.

Description

Technical Field

[0001] The invention belongs to the technical field of clothing fabrics, and particularly relates to an anti-mite and antibacterial down jacket fabric and a preparation method thereof. Background Art

[0002] Down jackets are garments filled with down fillings. They have good warmth retention and are the main clothing for keeping warm in winter. Since down jackets are filled with down, the fabrics of down jackets are generally required to have certain antibacterial properties. In addition, fabrics are a common breeding ground for dust mites. By adding chemical reagents with mite-killing or mite-repelling effects to textiles, the textiles are given anti-mite and mite-repelling functions, and realizing anti-mite and mite-repelling functions during the use of textiles has become a new trend.

[0003] At present, common measures to improve the antibacterial and anti-mite properties of fabrics include impregnating the fabrics with antibacterial finishing liquids and anti-mite finishing liquids. However, this treatment method has limited effect on improving the antibacterial and anti-mite properties of the fabrics. Moreover, the antibacterial and anti-mite properties of the fabrics will decrease after multiple washings, and the fabrics are not durable enough. Therefore, the present invention proposes an anti-mite and antibacterial down jacket fabric and a preparation method thereof. Summary of the Invention

[0004] The purpose of the present invention is to provide an anti-mite and antibacterial down jacket fabric and a preparation method thereof in order to solve the above problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] As a first aspect of the present invention, the present invention provides an anti-mite and antibacterial down jacket fabric, wherein the structure of the fabric is, from the outside to the inside, a face layer, a functional membrane and a base fabric layer;

[0007] The face layer and the base fabric layer are both woven from blended yarns of long-staple cotton fiber and nylon fiber. The raw materials of the functional membrane comprise, by mass percentage, 20-30% polyurethane, 5-15% wood vinegar powder, 5-10% chitosan, 1-5% nano-silicon dioxide, and the remainder being solvent.

[0008] As a further optimized solution of the present invention, the weight percentages of the long-staple cotton fiber and the nylon fiber blended yarn are 20-30% long-staple cotton fiber and 70-80% nylon fiber.

[0009] As a further optimized solution of the present invention, the preparation method of the wood vinegar powder comprises the following steps:

[0010] (1) collecting smoke gas generated during the carbonization process of camphor / eucalyptus, and obtaining a liquid wood vinegar stock solution through heat exchange, mixing the wood vinegar stock solution with citric acid and paraffin oil, heating and stirring to obtain a reaction solution, and distilling and condensing the reaction solution to obtain a clarified wood vinegar solution;

[0011] (2) freeze-drying the wood vinegar solution obtained in step (1) to obtain wood vinegar powder.

[0012] As a further optimized solution of the present invention, the added amount of the citric acid is 6-8% of the wood vinegar stock solution, and the added amount of the paraffin oil is 2-4% of the wood vinegar stock solution.

[0013] As a second aspect of the present invention, the present invention further provides a method for preparing the anti-mite and antibacterial down jacket fabric as described above, which specifically comprises the following steps:

[0014] (1) using blended yarns of long-staple cotton fiber and nylon fiber as warp and weft to weave a face layer and a base fabric layer;

[0015] (2) adding a formulated amount of polyurethane to a solvent, stirring and dissolving the polyurethane solution under heating conditions to obtain a polyurethane solution, adding a formulated amount of chitosan, nano-silicon dioxide, and wood vinegar powder to the polyurethane solution, stirring and dispersing the polyurethane solution to obtain a spinning solution, and electrospinning the spinning solution to obtain the functional membrane;

[0016] (3) acupuncture treatment of the functional membrane;

[0017] (4) The face layer and the base fabric layer are glued with hot melt adhesive, and then the face layer and the base fabric layer are calendered and laminated on both sides of the functional film. After stretching and shaping, the anti-mite and antibacterial down jacket fabric can be obtained.

[0018] As a further optimization scheme of the present invention, in step (2), the process parameters of the electrospinning are as follows: the electrospinning pressure is 10-15 kV, the spinning solution injection speed is 0.1-0.5 mm / min, the collection speed is 50-100 r / min, the temperature is 20-25°C, and the relative humidity is 35-40%.

[0019] As a further optimization scheme of the present invention, in step (3), the needle density of the needle treatment is 200-250 needles / cm 2 The acupuncture hole diameter is 0.5-1mm.

[0020] The beneficial effects of the present invention are:

[0021] (1) The anti-mite and antibacterial down jacket fabric disclosed in the present invention is a functional film with antibacterial and anti-mite effects composited between the face layer and the lining. Compared with the traditional method of impregnating the fabric with antibacterial and anti-mite finishing liquid, the antibacterial and anti-mite properties of the fabric itself are better and more lasting, and have good application prospects in the field of down jacket fabrics.

[0022] (2) The functional membrane provided by the present invention includes wood vinegar powder, which has an excellent anti-mite effect compared to bamboo vinegar powder with a bactericidal effect. In addition, the introduction of wood vinegar powder enhances the tensile properties of the functional membrane, which can, to a certain extent, prevent the functional membrane from breaking after multiple washings, thereby ensuring the long-term antibacterial and anti-mite properties of the functional membrane. DETAILED DESCRIPTION

[0023] The present application is described in further detail below. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technicians in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0024] Example 1

[0025] This embodiment provides an anti-mite and antibacterial down jacket fabric, the structure of the fabric comprising a base fabric layer, a face layer, and a functional film composited between the base fabric layer and the face layer;

[0026] Among them, the facial layer and the base fabric layer are both woven from blended yarns of long-staple cotton fibers and nylon fibers. The preparation method of the blended yarn is a conventional method in this technical field. The weight percentages of each fiber are 20% long-staple cotton fiber and 80% nylon fiber, respectively. The raw material composition of the functional membrane, calculated by mass percentage, includes 20% polyurethane, 15% wood vinegar powder, 5% chitosan, 5% nano-silica, and the balance is solvent (in this embodiment, the solvent is N-methylpyrrolidone).

[0027] The preparation method of the wood vinegar powder comprises collecting smoke gas generated during the carbonization process of eucalyptus (in this embodiment, the carbonization process is carried out by heating to 400° C. at a heating rate of 10° C. / min, isolating the temperature from air, and heating and decomposing for 5 hours), obtaining a liquid wood vinegar stock solution through heat exchange, mixing the wood vinegar stock solution with citric acid and paraffin oil, heating and stirring the mixture at 75° C. for 5 hours to obtain a reaction solution, distilling and condensing the reaction solution to obtain a clarified wood vinegar solution, wherein the amount of citric acid added is 6% of the wood vinegar stock solution, and the amount of paraffin oil added is 2% of the wood vinegar stock solution. Finally, the wood vinegar solution is freeze-dried to obtain the wood vinegar powder.

[0028] The preparation method of anti-mite and antibacterial down jacket fabric comprises the following steps:

[0029] (1) The face layer and the base fabric layer are woven using blended yarns of long-staple cotton fiber and nylon fiber as warp and weft threads.

[0030] (2) adding a formulated amount of polyurethane to a solvent, stirring and dissolving the polyurethane solution under heating conditions to obtain a polyurethane solution, adding a formulated amount of chitosan, nano-silica and wood vinegar powder to the polyurethane solution, stirring and dispersing the polyurethane solution to obtain a spinning solution, and electrospinning the spinning solution to obtain the functional membrane, wherein the electrospinning process parameters are: an electrospinning pressure of 10 kV, a spinning solution injection speed of 0.1 mm / min, a collection speed of 50 r / min, a temperature of 25° C., and a relative humidity of 35%;

[0031] (3) The functional film is needle-punched with a needle-punching density of 200 punctures / cm 2 , the acupuncture hole diameter is 1mm;

[0032] (4) The face layer and the base fabric layer are glued with hot melt adhesive, and then the face layer and the base fabric layer are calendered and laminated on both sides of the functional film. After stretching and shaping, the anti-mite and antibacterial down jacket fabric can be obtained.

[0033] Example 2

[0034] This embodiment provides an anti-mite and antibacterial down jacket fabric, the structure of the fabric comprising a base fabric layer, a face layer, and a functional film composited between the base fabric layer and the face layer;

[0035] Among them, the facial layer and the base fabric layer are both woven from blended yarns of long-staple cotton fibers and nylon fibers. The preparation method of the blended yarn is a conventional method in this technical field. The weight percentages of each fiber are 30% long-staple cotton fiber and 70% nylon fiber, respectively. The raw material composition of the functional membrane, calculated by mass percentage, includes 30% polyurethane, 5% wood vinegar powder, 10% chitosan, 1% nano-silica, and the balance is solvent (in this embodiment, the solvent is N-methylpyrrolidone).

[0036] The preparation method of the wood vinegar powder is the same as that of Example 1, except that the amount of citric acid added is 8% of the wood vinegar stock solution, and the amount of paraffin oil added is 4% of the wood vinegar stock solution.

[0037] The preparation method of anti-mite and antibacterial down jacket fabric comprises the following steps:

[0038] (1) using blended yarns of long-staple cotton fiber and nylon fiber as warp and weft to weave a face layer and a base fabric layer;

[0039] (2) adding a formulated amount of polyurethane to a solvent, stirring and dissolving the polyurethane solution under heating conditions to obtain a polyurethane solution, adding a formulated amount of chitosan, nano-silica and wood vinegar powder to the polyurethane solution, stirring and dispersing the polyurethane solution to obtain a spinning solution, and electrospinning the spinning solution to obtain the functional membrane, wherein the electrospinning process parameters are as follows: an electrospinning pressure of 15 kV, a spinning solution injection speed of 0.5 mm / min, a collection speed of 100 r / min, a temperature of 20° C., and a relative humidity of 40%;

[0040] (3) The functional film is needle-punched with a needle-punching density of 250 punctures / cm 2 , the acupuncture hole diameter is 0.5mm;

[0041] (4) The face layer and the base fabric layer are glued with hot melt adhesive, and then the face layer and the base fabric layer are calendered and laminated on both sides of the functional film. After stretching and shaping, the anti-mite and antibacterial down jacket fabric can be obtained.

[0042] Example 3

[0043] This embodiment provides an anti-mite and antibacterial down jacket fabric, the structure of the fabric comprising a base fabric layer, a face layer, and a functional film composited between the base fabric layer and the face layer;

[0044] Among them, the facial layer and the base fabric layer are both woven from blended yarns of long-staple cotton fibers and nylon fibers. The preparation method of the blended yarn is a conventional method in this technical field. The weight percentages of each fiber are 20% long-staple cotton fiber and 80% nylon fiber, respectively. The raw material composition of the functional membrane, calculated by mass percentage, includes 20% polyurethane, 15% wood vinegar powder, 10% chitosan, 5% nano-silica, and the balance is solvent (in this embodiment, the solvent is N-methylpyrrolidone).

[0045] The preparation method of the wood vinegar powder is the same as that of Example 1.

[0046] The preparation method of the anti-mite and antibacterial down jacket fabric is the same as that in Example 1.

[0047] Comparative Example 1

[0048] The difference between this comparative example and Example 1 is that the raw material composition of the functional film, in terms of mass percentage, includes 20% polyurethane, 15% bamboo vinegar powder, 5% chitosan, 5% nano-silicon dioxide, and the balance is N-methylpyrrolidone.

[0049] Comparative Example 2

[0050] The difference between this comparative example and Example 1 is that the raw material composition of the functional membrane, in terms of mass percentage, includes 20% polyurethane, 5% chitosan, 5% nano-silicon dioxide, and the balance is N-methylpyrrolidone.

[0051] Comparative Example 3

[0052] The difference between this comparative example and Example 1 is that the structure of the fabric does not include a functional film. In the fabric preparation method, hot melt adhesive is directly used to glue the face layer and the base fabric layer, and then the face layer and the base fabric layer are calendered and laminated on both sides of the functional film. The fabric can be obtained after stretching and shaping.

[0053] Comparative Example 4

[0054] The difference between this comparative example and Example 1 is that the fabric does not include a functional film, 20% polyurethane is added to a solvent, stirred and dissolved completely under heating conditions to obtain a polyurethane solution, 5% chitosan, 5% nano-silicon dioxide and 10% wood vinegar powder are added to the polyurethane solution, and stirred and dispersed completely to obtain an impregnation liquid, then, the facial layer and the base fabric layer are respectively immersed in the impregnation liquid for finishing, and then the treated facial layer and base fabric layer are obtained by washing and drying, and then the facial layer and the base fabric layer are glued with hot melt adhesive as described in Example 1, and then the facial layer and the base fabric layer are calendered and laminated on both sides of the functional film, and the fabric can be obtained after stretching and shaping.

[0055] Comparative Example 5

[0056] The difference from Example 1 is that the functional film is not subjected to acupuncture treatment.

[0057] The fabrics obtained in Examples 1 and 3 and Comparative Examples 1-5 were tested for antibacterial and anti-mite properties according to GB / T 20944.2-2007 “Evaluation of antibacterial properties of textiles” and GB / T 24253-2009 “Evaluation of anti-mite properties of textiles”. The results are shown in Table 1.

[0058] Table 1. Air and moisture permeability of fabrics

[0059]

[0060] As can be seen from Table 1, Comparative Example 2 is different from Example 1 in that its functional membrane component does not contain wood vinegar powder, and its antibacterial rate and anti-mite rate of the fabric are inferior to those of Example 1. In addition, Comparative Example 3 does not have a functional membrane compared to Example 1, and its antibacterial rate and anti-mite rate of the fabric are also inferior to those of Example 1.

[0061] The antibacterial rate data of Example 1 and Comparative Example 1 are comparable, but the anti-mite rate of Comparative Example 1 is significantly lower than that of Example 1. The difference between the two is that wood vinegar powder is used as a component of the functional film of Example 1, while bamboo vinegar powder is used in Comparative Example 1. It can be seen that wood vinegar powder has the same antibacterial property as bamboo vinegar powder when used on fabrics, but wood vinegar powder has a better repellent effect on mites than bamboo vinegar powder.

[0062] Comparative Example 4 is different from Example 1. It impregnates the fabric with an impregnation solution containing polyurethane, chitosan, nano-silica, wood vinegar powder and solvent. The antibacterial rate and anti-mite rate of the treated fabric are not much different from those of Example 1. However, after the fabrics of Example 1 and Comparative Example 4 were washed 50 times, the antibacterial rate and anti-mite rate of the fabric were measured again. It was found that after washing 50 times, the antibacterial rates of Example 1 against Staphylococcus aureus ATCC No. 6538, Escherichia coli 8099 and Candida albicans ATCC No. 10231 were 96.56%, 97.01% and 96.49% respectively, and the anti-mite rate was 69.87%. After washing 50 times, the antibacterial rates of Comparative Example 1 against Staphylococcus aureus ATCC No. 6538, Escherichia coli 8099 and Candida albicans ATCC The antibacterial rates of No. 10231 were 63.32%, 64.03% and 66.16% respectively, and the anti-mite rate was 46.69%. The durability of the antibacterial and anti-mite effects was not as good as that of Example 1.

[0063] Comparative Example 5 differs from Example 1 in that the functional film is not needle-punched, resulting in no significant effect on the fabric's antibacterial and anti-mite properties. However, after washing the fabric 50 times, the antibacterial and anti-mite rates were measured again. After 50 washes, the antibacterial rates of Comparative Example 1 against Staphylococcus aureus ATCC No. 6538, Escherichia coli 8099, and Candida albicans ATCC No. 10231 were 90.46%, 92.23%, and 89.71%, respectively, and the anti-mite rate was 56.27%. The durability of the antibacterial and anti-mite effects was inferior to that of Example 1.

[0064] Comparison of the antibacterial and anti-mite effects of the fabrics prepared in Example 1 and Comparative Examples 1-5 shows that the addition of wood vinegar powder to the functional film component not only has comparable antibacterial properties as bamboo vinegar powder, but also has a more pronounced anti-mite effect than conventional bamboo vinegar powder. Furthermore, the addition of wood vinegar powder to the functional film component can achieve a more sustained antibacterial and anti-mite effect. To further explore the impact of functional films on fabric performance, the following comparative examples were prepared:

[0065] Comparative Example 5

[0066] The difference from Example 1 is that the raw material composition of the functional membrane, in terms of mass percentage, includes 20% polyurethane, 10% wood vinegar powder, 5% chitosan, 5% nano-silica, and the balance is solvent (the solvent is N-methylpyrrolidone).

[0067] Comparative Example 6

[0068] The difference from Example 1 is that the raw material composition of the functional membrane, in terms of mass percentage, includes 20% polyurethane, 5% wood vinegar powder, 5% chitosan, 5% nano-silica, and the balance is solvent (the solvent is N-methylpyrrolidone).

[0069] The film samples 1-5 prepared in Example 1, Comparative Examples 1-2 and Comparative Examples 5-6 were subjected to a tensile performance test. The test method is as follows: film samples of uniform size and thickness are stored under constant temperature and humidity conditions for 24 hours, and the mechanical properties of different film samples when stretched to fracture are tested using a microcomputer-controlled electronic universal testing machine. Five film samples are tested in each group, and the test results are averaged. The tensile rate is 50 mm / min. The test method refers to GB / T1040-1992. The results are shown in Table 2.

[0070] Table 2. Tensile properties of functional films

[0071]

[0072] As can be seen from Table 2, the difference between film sample 1 and film samples 4-5 is that the addition amount of wood vinegar powder in the functional film is 15%, 10% and 5% respectively. From the tensile performance data of the functional membrane, the addition amount of wood vinegar powder has a certain influence on the tensile properties of the functional membrane. When the addition amount of wood vinegar powder is 15%, the effect on the tensile properties of the functional membrane is greater, which will lead to a decrease in the mechanical properties of the functional membrane, thereby causing the functional membrane to break after multiple washings, thereby affecting the antibacterial and anti-mite properties of the functional membrane. As can be seen from Table 2, when the addition amount of wood vinegar powder is 10%, the mechanical properties of the functional membrane can be effectively guaranteed. Combined with Table 1, it can be seen that when the addition amount of wood vinegar powder is 10%, the antibacterial and anti-mite effects of the fabric are equivalent to 15%. In summary, the optimal addition amount of wood vinegar powder is 10%.

[0073] The above-described embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. An anti-mite and antibacterial down jacket fabric, characterized by: The fabric structure comprises, from outside to inside, a face fabric layer, a functional membrane, and a base fabric layer, wherein the functional membrane is needle-punched; wherein both the face fabric layer and the base fabric layer are woven from a blended yarn of long-staple cotton fiber and nylon fiber; the raw material composition of the functional membrane, by weight percentage, includes 20% polyurethane, 10% wood vinegar powder, 5% chitosan, 5% nano-silica, and the balance N-methylpyrrolidone; the functional membrane has a tensile strength of 15.67 MPa and an elongation at break of 627.56%; The preparation method of the wood vinegar powder comprises the following steps: (1) collecting smoke gas generated during the carbonization of eucalyptus and obtaining a liquid wood vinegar stock solution through heat exchange, mixing the wood vinegar stock solution with citric acid and paraffin oil, heating and stirring the mixture to obtain a reaction solution, and distilling and condensing the reaction solution to obtain a clarified wood vinegar solution, wherein the amount of citric acid added is 6% of the wood vinegar stock solution, and the amount of paraffin oil added is 2% of the wood vinegar stock solution; (2) freeze-drying the wood vinegar liquid obtained in step (1) to obtain wood vinegar powder.

2. The anti-mite and antibacterial down jacket fabric according to claim 1, characterized in that: The weight percentages of the long-staple cotton fiber and the nylon fiber blended yarn are 20-30% of the long-staple cotton fiber and 70-80% of the nylon fiber.

3. A method for preparing the anti-mite and antibacterial down jacket fabric according to any one of claims 1-2, characterized in that: The specific steps include: (1) Using blended yarns of long-staple cotton fiber and nylon fiber as warp and weft threads to weave the surface fabric layer and the base fabric layer; (2) adding a formulated amount of polyurethane to N-methylpyrrolidone, stirring and dissolving the polyurethane solution under heating conditions to obtain a polyurethane solution, adding a formulated amount of chitosan, nano-silica and wood vinegar powder to the polyurethane solution, stirring and dispersing the polyurethane solution to obtain a spinning solution, and electrospinning the spinning solution to obtain the functional membrane; (3) Acupuncture treatment of the functional membrane; (4) Using hot melt adhesive to glue the face fabric layer and the bottom fabric layer, and then calendering and laminating the face fabric layer and the bottom fabric layer on both sides of the functional film, and after stretching and shaping, the anti-mite and antibacterial down jacket fabric can be obtained.

4. The method for preparing an anti-mite and antibacterial down jacket fabric according to claim 3, characterized in that: In step (3), the needle density of the needle treatment is 200-250 needles / cm 2 The acupuncture hole diameter is 0.5-1mm.

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