Breathable moisture-absorbing fabric as well as preparation method and application thereof

Abstract

The invention relates to the technical field of textiles, and discloses a breathable moisture-absorbing fabric as well as a preparation method and application thereof. The preparation method of the breathable moisture-absorbing fabric comprises the following steps: (1) purely spinning cotton fibers into cotton yarns as warp yarns, and purely spinning modified polyester fibers into polyester yarns as weft yarns; (2) warping the warp yarns by adopting a warping machine; (3) taking the modified collagen as a sizing agent, carrying out a warp sizing process on a sizing machine, and then carrying out a drafting process; (4) weaving the warp and weft yarns to obtain the breathable moisture-absorbing fabric. The cotton yarn serves as the warp yarn and has the advantages of being soft, comfortable and good in air permeability, so that the fabric has good hand feeling and air permeability; the modified polyester yarn is used as the weft yarn and has the characteristics of wear resistance, wrinkle resistance, easiness in cleaning, quick drying and the like, so that the fabric is more durable and easy to maintain, and the home textile fabric with the comfort of the cotton yarn and the durability of the polyester yarn is obtained by blending.

Description

Technical Field

[0001] The present invention belongs to the technical field of textiles, and particularly relates to a breathable and moisture-absorbing fabric, a preparation method thereof, and an application thereof. Background Art

[0002] Home textile fabrics are generally used to make products such as furniture, beds, and clothes that are in close contact with the human skin. With the development of the economy and the progress of society, and the continuous improvement of people's material living standards, people have put forward higher and higher requirements for the comfort, functionality, etc. of home textile fabrics. Especially for bed sheet fabrics, more attention is paid to the texture of the fabrics, and products that integrate the sense of quality and technology are increasingly favored by the majority of consumers. People have put forward new requirements for the moisture absorption and breathability functions of the fabrics.

[0003] Polyester has high strength and elastic recovery ability and is widely used in the manufacture of fabric products. The heat resistance of polyester fabrics has good performance among synthetic fiber fabrics, and it has good resistance to various chemicals. However, the moisture absorption and moisture permeability of polyester are poor, while the moisture absorption of cotton fibers is good, but the durability is poor. Therefore, there is an urgent need for a home textile fabric with good moisture absorption, breathability, and mechanical properties. Summary of the Invention

[0004] The purpose of the present invention is to provide a breathable and moisture-absorbing fabric, a preparation method thereof, and an application thereof, so as to solve the technical problem of poor moisture absorption and breathability of the fabric in the prior art.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] The present invention provides a preparation method of a breathable and moisture-absorbing fabric, comprising the following steps:

[0007] Step (1): Spinning cotton fibers into cotton yarns as warp yarns, and spinning modified polyester fibers into polyester yarns as weft yarns;

[0008] Step (2): Warping the warp yarns by a warping machine;

[0009] Step (3): Using modified collagen as a sizing agent, performing a warp sizing process on a sizing machine, and then performing a drawing-in process;

[0010] Step (4): Weaving the warp and weft yarns to obtain a breathable and moisture-absorbing fabric.

[0011] Preferably, in the step (1), the fineness of the modified polyester fiber is 75D / 72F; the count of the cotton yarn includes at least one of 70S and 80S.

[0012] Preferably, in the step (1), the preparation method of the modified polyester fiber comprises the following steps:

[0013] S1: Ultrasonically wash the polyester fibers with an ethanol aqueous solution with a volume ratio of 1:1 for 25 - 35 min, and then dry them to constant weight at 75 - 85 °C to obtain clean polyester;

[0014] S2: Dissolve 10 - 50 g of dopamine hydrochloride in 8 - 12 L of Tris buffer solution, add 1 mol / L hydrochloric acid solution to adjust the pH to 8.5, then immerse the clean polyester in the solution at a bath ratio of 1:40, keep it for 20 - 28 h at room temperature, take it out, wash it 3 - 5 times with deionized water to obtain treated polyester;

[0015] S3: Disperse palygorskite in water to obtain a 3 - 5 wt% palygorskite suspension, then crush the palygorskite suspension with a cell crusher for 0.5 - 1.5 h, and then ultrasonically treat it for 20 - 40 min. After that, add the treated polyester to the palygorskite suspension at a bath ratio of 1:40 and treat it for 2 - 4 h, then wash it 3 - 5 times, and finally dry it to constant weight at 75 - 82 °C to obtain modified polyester fibers.

[0016] Preferably, in the step (2), the warping is carried out by a sectional warping machine, the number of warping ends is 840, and the winding line speed is 600 m / min.

[0017] Preferably, in the step (3), during the sizing process, the yarn path speed is 19 - 21 m / min, the slurry temperature is 43 - 47 °C, the drying temperature is 58 - 62 °C, the slurry concentration is 9 - 11%, and the sizing rate is 13 - 15%.

[0018] Preferably, in the step (3), the preparation method of the modified collagen includes the following steps:

[0019] In a nitrogen environment, add 25 - 50 g of collagen to 10 - 20 L of water, then add 25 - 50 g of methylacrylamide and 3 - 6 g of potassium persulfate solution and mix. After stirring and treating at 55 - 65 °C for 5 - 7 h, a mixed solution is obtained. Add the mixed solution to 40 - 60 L of acetone for precipitation, filter, wash the filter residue 3 - 5 times with ethanol and glacial acetic acid respectively, and dry it to constant weight at 70 - 80 °C to obtain modified collagen.

[0020] In the above process, the collagen aqueous solution and methylacrylamide are grafted in the presence of the initiator potassium persulfate.

[0021] The structural formula of the modified collagen is as follows:

[0022]

[0023] Preferably, in the step (4), circular knitting machine weft knitting method is used for knitting; the fabric thickness is 0.3 - 0.5 mm; the warp density of the fabric is 300 - 330 ends per inch, and the weft density is 210 - 240 picks per inch.

[0024] The breathable and moisture-absorbing fabric prepared by the preparation method of the breathable and moisture-absorbing fabric described above.

[0025] The present invention also provides an application of the breathable and moisture-absorbing fabric in home textile fabrics.

[0026] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are as follows:

[0027] 1. The present invention uses cotton yarn as the warp and modified polyester yarn as the weft to weave into a home textile fabric, giving full play to the respective advantages of cotton yarn and polyester yarn through blending; cotton yarn as the warp has the characteristics of softness, comfort and good air permeability, making the fabric have good hand feeling and air permeability; modified polyester yarn as the weft has the characteristics of wear resistance, wrinkle resistance, easy cleaning and quick drying, making the fabric more durable and easy to maintain. The blended home textile fabric has both the comfort of cotton yarn and the durability of polyester yarn.

[0028] 2. In the present invention, dopamine hydrochloride reacts with polyester fibers to form CO-NH bonds and polymerizes on the surface of polyester fibers to improve the adhesion performance of polyester fibers. Polydopamine with multiple hydroxyl groups forms hydrogen bonds with the hydroxyl groups of palygorskite to bind palygorskite to dopamine-modified polyester fibers; the hydroxyl groups on the surface of palygorskite form hydrogen bonds with water molecules and cooperate with dopamine to improve the hydrophilic and moisture-absorbing properties of polyester fibers; in addition, the water in the fabric is free water (FW), intermediate water (IW) and bound water. The modified polyester fibers absorb water to form a large amount of weakly bonded or non-hydrogen-bonded intermediate water, which realizes rapid evaporation. And due to the surface polymerization of polydopamine, the higher surface temperature further increases the evaporation rate of water; by modifying polyester fibers, the hydrophilicity, moisture absorption, evaporation rate and water vapor permeability of polyester fibers are improved, thereby improving the moisture absorption and sweat discharge effect of the breathable and moisture-absorbing fabric.

[0029] 3. In the present invention, due to the cleavage of the π bond in methacrylamide, collagen is grafted with polymethacrylamide to obtain modified collagen; the modified collagen has a more ordered molecular structure than collagen, and the flexible chain of polymethacrylamide endows the copolymer with sufficient elasticity. When used as a sizing agent, new intermolecular hydrogen bonds are formed between the hydroxyl groups of cotton fibers and the carboxyl and amide groups of the modified collagen, which has adhesiveness, covers the surface of the yarn and partially penetrates into the yarn, forming an elastic polymer film on the yarn, making the cotton fibers flexible and wear-resistant, and improving the mechanical properties of cotton yarn; while the self-polymerization and adhesion properties of dopamine hydrochloride form a polydopamine layer on the surface of polyester fibers, increasing the tensile strength and wear resistance stability of polyester fibers. Therefore, the modified polyester fibers and the modified collagen cooperate synergistically to improve the mechanical properties of the fabric; the modified collagen contains hydrophilic functional groups and does not reduce the capillary phenomenon of cotton yarn, so it does not affect the moisture absorption of cotton yarn; and during the biochemical desizing process using protease, the modified collagen is completely removed from the surface of the yarn, increasing the porosity and capillary phenomenon of cotton yarn, and cooperating with the modified polyester to improve the moisture absorption and air permeability of the fabric. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0031] Figure 1 is the process flow chart of the preparation of the breathable and moisture-absorbing fabric of the present invention;

[0032] Figure 2 is the line graph of the moisture permeability and air permeability of the breathable and moisture-absorbing fabric of the present invention;

[0033] Figure 3 is the line graph of the evaporation rate and water absorption rate of the breathable and moisture-absorbing fabric of the present invention;

[0034] Figure 4 is the bar graph of the tensile strength of the breathable and moisture-absorbing fabric of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0036] Example 1

[0037] This embodiment discloses a preparation method of modified collagen, which includes the following steps:

[0038] In a nitrogen environment, 36 g of collagen is added to 15 L of water, and then 36 g of methylacrylamide and 4.5 g of potassium persulfate solution are added and mixed. After stirring at 60 °C for 6 h, a mixed solution is obtained. The mixed solution is added to 50 L of acetone for precipitation, filtered, and the filter residue is washed 4 times with ethanol and glacial acetic acid respectively, and dried to constant weight at 75 °C to obtain modified collagen.

[0039] Example 2

[0040] This embodiment discloses a preparation method of modified polyester fiber, which includes the following steps:

[0041] S1: The polyester fiber is ultrasonically washed with an ethanol aqueous solution with a volume ratio of 1:1 for 30 min, and then dried to constant weight at 80 °C to obtain clean polyester;

[0042] S2: 30 g of hydrochloric acid dopamine is dissolved in 10 L of Tris buffer solution, and the pH is adjusted to 8.5 by adding 1 mol / L hydrochloric acid solution. Then the clean polyester is immersed in the solution at a bath ratio of 1:40, taken out after maintaining at room temperature for 24 h, and washed 4 times with deionized water to obtain treated polyester;

[0043] S3: Palygorskite is dispersed in water to obtain a 4 wt% palygorskite suspension. Then the palygorskite suspension is pulverized by a cell crusher for 1 h, and ultrasonically treated for 30 min. After that, the treated polyester is added to the palygorskite suspension at a bath ratio of 1:40 for treatment for 3 h, then washed 4 times, and finally dried to constant weight at 80 °C to obtain modified polyester fiber.

[0044] Example 3

[0045] Refer to Figure 1 As shown, this embodiment discloses a preparation method of a breathable and moisture-absorbing fabric, which includes the following steps:

[0046] Step (1): Pure cotton fiber is spun into cotton yarn as the warp, and the modified polyester fiber prepared in Example 2 is spun into single yarn as the weft. The fineness of the modified polyester fiber is 75 D / 72 F, and the count of the cotton yarn is 80 S;

[0047] Step (2): The warp is warped by a sectional warping machine, with 840 warping ends and a winding line speed of 600 m / min;

[0048] Step (3) The modified collagen prepared in Example 1 was used as a sizing agent, and the warp sizing process was carried out on a sizing machine. The yarn path speed was 20 m / min, the slurry temperature was 45 °C, the drying temperature was 60 °C, the slurry concentration was 10%, the sizing rate was controlled at 14%, and then the drawing-in process was carried out;

[0049] Step (4) The warp and weft yarns were woven by a circular knitting machine to obtain a breathable and moisture-absorbing fabric with a fabric thickness of 0.4 mm; the warp density of the fabric was 320 ends per inch, and the weft density was 220 picks per inch.

[0050] Example 4

[0051] Refer to Figure 1 As shown, this example discloses a preparation method of a breathable and moisture-absorbing fabric, including the following steps:

[0052] Step (1) The cotton fibers were spun into cotton yarns as the warp, and the modified polyester fibers prepared in Example 2 were spun into single yarns as the weft. The fineness of the modified polyester fibers was 75 D / 72 F, and the count of the cotton yarns was 80 S;

[0053] Step (2) The warp was warped by a beam warping machine, with 840 warp ends and a winding speed of 600 m / min;

[0054] Step (3) The modified collagen prepared in Example 1 was used as a sizing agent, and the warp sizing process was carried out on a sizing machine. The yarn path speed was 19 m / min, the slurry temperature was 47 °C, the drying temperature was 58 °C, the slurry concentration was 11%, the sizing rate was controlled at 13%, and then the drawing-in process was carried out;

[0055] Step (4) The warp and weft yarns were woven by a circular knitting machine to obtain a breathable and moisture-absorbing fabric with a fabric thickness of 0.5 mm; the warp density of the fabric was 300 ends per inch, and the weft density was 240 picks per inch.

[0056] Example 5

[0057] Refer to Figure 1 As shown, this example discloses a preparation method of a breathable and moisture-absorbing fabric, including the following steps:

[0058] Step (1) The cotton fibers were spun into cotton yarns as the warp, and the modified polyester fibers prepared in Example 2 were spun into single yarns as the weft. The fineness of the modified polyester fibers was 75 D / 72 F, and the count of the cotton yarns was 70 S;

[0059] Step (2) The warp was warped by a beam warping machine, with 840 warp ends and a winding speed of 600 m / min;

[0060] Step (3) The modified collagen prepared in Example 1 was used as a sizing agent, and the warp sizing process was carried out on a sizing machine. The yarn path speed was 21 m / min, the slurry temperature was 43 °C, the drying temperature was 62 °C, the slurry concentration was 9%, the sizing rate was controlled at 15%, and then the warping process was carried out;

[0061] Step (4) Using the circular knitting machine weft knitting method, the warp and weft yarns were knitted to obtain a breathable and moisture-absorbing fabric with a fabric thickness of 0.3 mm; the warp density of the fabric was 330 roots per inch, and the weft density was 210 roots per inch.

[0062] Example 6

[0063] See Figure 1 As shown, this example discloses a preparation method of a breathable and moisture-absorbing fabric, including the following steps:

[0064] Step (1) The cotton fibers were spun into cotton yarns as warp yarns, and the modified polyester fibers prepared in Example 2 were spun into single yarns as weft yarns. The fineness of the modified polyester fibers was 75D / 72F, and the count of the cotton yarns was 80S;

[0065] Step (2) The warp yarns were warped on a beam warping machine, with 840 warping ends and a winding speed of 600 m / min;

[0066] Step (3) The modified collagen prepared in Example 1 was used as a sizing agent, and the warp sizing process was carried out on a sizing machine. The yarn path speed was 20 m / min, the slurry temperature was 44 °C, the drying temperature was 61 °C, the slurry concentration was 10%, the sizing rate was controlled at 13%, and then the warping process was carried out;

[0067] Step (4) Using the circular knitting machine weft knitting method, the warp and weft yarns were knitted to obtain a breathable and moisture-absorbing fabric with a fabric thickness of 0.4 mm; the warp density of the fabric was 310 roots per inch, and the weft density was 230 roots per inch.

[0068] Example 7

[0069] See Figure 1 As shown, this example discloses a preparation method of a breathable and moisture-absorbing fabric, including the following steps:

[0070] Step (1) The cotton fibers were spun into cotton yarns as warp yarns, and the modified polyester fibers prepared in Example 2 were spun into single yarns as weft yarns. The fineness of the modified polyester fibers was 75D / 72F, and the count of the cotton yarns was 70S;

[0071] Step (2) The warp yarns were warped on a beam warping machine, with 840 warping ends and a winding speed of 600 m / min;

[0072] In Step (3), the modified collagen prepared in Example 1 was used as a sizing agent, and the warp sizing process was carried out on a sizing machine. The yarn path speed was 21 m / min, the slurry temperature was 46 °C, the drying temperature was 59 °C, the slurry concentration was 9%, the sizing rate was controlled at 14%, and then the drawing-in process was carried out;

[0073] In Step (4), the weft knitting method was used on a circular knitting machine to weave the warp and weft yarns to obtain a breathable and moisture-absorbing fabric with a fabric thickness of 0.5 mm; the warp density of the fabric was 320 ends per inch, and the weft density was 220 picks per inch.

[0074] Comparative Example 1

[0075] Compared with Example 3, in the process of preparing the breathable and moisture-absorbing fabric in Comparative Example 1, starch sizing slurry was used to replace the modified collagen, and other conditions remained unchanged.

[0076] Comparative Example 2

[0077] Compared with Example 3, in the process of preparing the breathable and moisture-absorbing fabric in Comparative Example 2, the polyester fiber was not modified, and other conditions remained unchanged.

[0078] Experimental Example

[0079] The properties of the breathable and moisture-absorbing fabrics prepared in Examples 3-7 and Comparative Examples 1-2 were tested.

[0080] I. Moisture Absorption and Air Permeability Test

[0081] According to the standard test method of GB / T5354-1997, the air permeability of the functional fabric was detected; according to the standard method of ISO17699-2003, the moisture permeability of the fabric was detected; the moisture absorption and quick-drying property test was carried out with reference to GB / T21655.1—2008 "Evaluation of Moisture Absorption and Quick-Drying Properties of Textiles".

[0082] Table 1

[0083] Group <![CDATA[Water vapor permeability / (mg / cm 2 ·d)]]> <![CDATA[Air permeability / mm·s -1 > Evaporation rate (g / h) Water absorption rate / % Example 3 3.1 185 0.32 232 Example 4 2.9 179 0.26 224 Example 5 3.0 183 0.29 230 Example 6 2.8 178 0.25 221 Example 7 2.6 176 0.23 220 Comparative Example 1 1.8 98 0.18 182 Comparative Example 2 1.2 84 0.12 146

[0084] As can be seen from Table 1, the breathable and moisture-absorbing fabrics prepared in Examples 3-7 have good air permeability and moisture absorption properties. The breathable and moisture-absorbing fabrics prepared in Comparative Examples 1-2 have poor air permeability and moisture absorption properties; by comparing Comparative Example 1 with Examples 3-7, it can be seen that using modified collagen as a sizing agent can improve the air permeability and moisture absorption properties of the breathable and moisture-absorbing fabric; by comparing Comparative Example 2 with Examples 3-7, it can be seen that using modified polyester fiber can improve the air permeability and moisture absorption properties of the breathable and moisture-absorbing fabric.

[0085] II. Mechanical Property Test

[0086] The tensile properties of the test specimens were measured according to GB / T 1447—2005. The test speed of the instrument was 10 mm / min. Four specimens were measured for each group and the average value was taken.

[0087] Table 2

[0088] Group Tensile strength (MPa) Example 3 19 Example 4 16 Example 5 18 Example 6 15 Example 7 16 Comparative Example 1 9 Comparative Example 2 12

[0089] As can be seen from Table 1, the breathable and moisture-absorbing fabrics prepared in Examples 3-7 have good mechanical properties. By comparing Comparative Example 1 with Examples 3-7, it can be seen that using modified collagen as the sizing agent can improve the mechanical properties of the breathable and moisture-absorbing fabric; by comparing Comparative Example 2 with Examples 3-7, it can be seen that using modified polyester fiber can improve the mechanical properties of the breathable and moisture-absorbing fabric.

[0090] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

[0091] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to only the specific embodiments. Obviously, many modifications and changes can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A method for preparing a breathable and moisture-absorbing fabric, characterized in that, It includes the following steps: Step (1): Purely spin cotton fibers into cotton yarn as the warp, and purely spin modified polyester fibers into polyester yarn as the weft; Step (2): The warp is warped by a sectional warping machine; Step (3): Using modified collagen as the sizing agent, carry out the warp sizing process on a sizing machine, and then carry out the heddle threading process; Step (4): Weave the warp and weft yarns to obtain a breathable and moisture-absorbing fabric.

2. The preparation method of the breathable and moisture-absorbing fabric according to claim 1, characterized in that, In the said step (1), the fineness of the modified polyester fiber is 75D / 72F; the count of the cotton yarn includes at least one of 70S and 80S.

3. The preparation method of the breathable and moisture-absorbing fabric according to claim 1, wherein, In the said step (1), the preparation method of the modified polyester fiber includes the following steps: S1: Ultrasonically wash the polyester fiber with an ethanol aqueous solution with a volume ratio of 1:1 for 25 - 35 min, and then dry it to constant weight at 75 - 85 °C to obtain clean polyester; S2: Dissolve 10 - 50 g of hydrochloric acid dopamine in 8 - 12 L of Tris buffer solution, add 1 mol / L hydrochloric acid solution to adjust the pH to 8.5, then immerse the clean polyester in the solution at a bath ratio of 1:40, keep it at room temperature for 20 - 28 h and then take it out, wash it 3 - 5 times with deionized water to obtain treated polyester; S3: Disperse palygorskite in water to obtain a 3 - 5 wt% palygorskite suspension, then crush the palygorskite suspension with a cell crusher for 0.5 - 1.5 h, and then ultrasonically treat it for 20 - 40 min. Then add the treated polyester to the palygorskite suspension at a bath ratio of 1:40 and treat it for 2 - 4 h, then wash it 3 - 5 times, and finally dry it to constant weight at 75 - 82 °C to obtain the modified polyester fiber.

4. The preparation method of the breathable and moisture-absorbing fabric according to claim 1, characterized in that In the said step (2), the sectional warping machine is used for warping, the number of warped ends is 840, and the winding line speed is 600 m / min.

5. The preparation method of the breathable and moisture-absorbing fabric according to claim 1, characterized in that, In the said step (3), during the sizing process, the yarn path speed is 19 - 21 m / min, the slurry temperature is 43 - 47 °C, the drying temperature is 58 - 62 °C, the slurry concentration is 9 - 11%, and the sizing rate is 13 - 15%.

6. The preparation method of the breathable and moisture-absorbing fabric according to claim 1, characterized in that, In the said step (3), the preparation method of the modified collagen includes the following steps: In a nitrogen environment, add 25 - 50 g of collagen to 10 - 20 L of water, then add 25 - 50 g of methylacrylamide and 3 - 6 g of potassium persulfate solution and mix. Stir and process at 55 - 65 °C for 5 - 7 h to obtain a mixed solution. Add the mixed solution to 40 - 60 L of acetone for precipitation, filter, wash the filter residue 3 - 5 times with ethanol and glacial acetic acid respectively, and dry it to constant weight at 70 - 80 °C to obtain the modified collagen.

7. The preparation method of the breathable and moisture-absorbing fabric according to claim 1, wherein, In the said step (4), circular knitting machine weft knitting method is used for knitting; the fabric thickness is 0.3 - 0.5 mm; the warp density of the fabric is 300 - 330 ends per inch, and the weft density is 210 - 240 ends per inch.

8. A breathable and moisture-absorbing fabric prepared by the method described in any one of claims 1 - 7.

9. Application of the breathable and moisture-absorbing fabric according to claim 8 in home textile fabrics.

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