Cool fiber knitted fabric and preparation method thereof

Abstract

The invention relates to the field of fabrics, in particular to a cool fiber knitted fabric and a preparation method thereof. The preparation method comprises the following steps: step 1, obtaining pretreated polyethylene fibers; step 2, obtaining aminated polyethylene fibers; step 3, obtaining activated polyethylene fibers; step 4, obtaining modified polyethylene fibers; 5, the modified polyethylene fibers are subjected to opening, drawing, roving, spinning, spooling, doubling and twisting, and modified polyethylene yarn is obtained; and step 6, knitting the modified polyethylene yarns by using a weft knitting circular knitting machine to obtain the knitted fabric. The fiber knitted fabric with the cool feeling is prepared by adopting the modified polyethylene fibers as the raw material, and the prepared fabric not only has the characteristics of cool feeling, portability and wear resistance of the traditional polyethylene fabric, but also has the advantages of moisture absorption, quick drying and aging resistance.

Description

Technical Field

[0001] The invention relates to the field of fabrics, and in particular to a cool fiber knitted fabric and a preparation method thereof. Background Art

[0002] In order to adapt to the development of modern society and meet the increasingly diversified needs of customers, the development of new products, new technologies and new processes is very necessary. From the perspective of clothing, people no longer simply pursue the beauty and durability of clothing materials, but hope that clothes can have multiple functions such as cooling, perspiration, antibacterial and deodorizing in summer or hot and humid places. It is not only the basis for clothing companies to carry out production and operation activities, but also an important means to improve competitiveness and economic benefits. Therefore, natural and environmentally friendly, moisture-absorbing and breathable, antibacterial and deodorizing, cool and comfortable are the concepts commonly used as spring and summer clothing fabrics in recent years.

[0003] Polyethylene fiber is a new type of material that can be applied to knitted fabrics. It has a good hand feel, is light and soft, and is suitable for outdoor products and lightweight clothing. It has excellent wear resistance and is not prone to wear and tear after long-term use, making it suitable for making high-quality clothing and supplies. It also has good resilience and comfort. Clothing made of this fabric can better fit the body curve and is comfortable to wear. However, polyethylene fiber fabrics have poor moisture absorption, which is not conducive to perspiration and breathability. Clothing made of this fabric will feel stuffy in hot weather and easily cause discomfort. In addition, polyethylene fabrics are easily affected by ultraviolet rays, which can cause aging and brittleness, reducing the service life. ‌ Summary of the invention

[0004] In view of the problems existing in the prior art, the object of the present invention is to provide a cool fiber knitted fabric and a preparation method thereof.

[0005] The purpose of the present invention is achieved by the following technical solutions:

[0006] In a first aspect, the present invention provides a method for preparing a cool fiber knitted fabric, comprising the following steps:

[0007] Step 1, preprocessing:

[0008] The polyethylene fiber is immersed in hydrogen peroxide, stirred, filtered, washed and dried to obtain the pretreated polyethylene fiber;

[0009] Step 2, amination treatment:

[0010] The pretreated polyethylene fiber and the ethanol solution are mixed, an aminosilane coupling agent is added, and the temperature is increased. After the treatment, the pretreated polyethylene fiber is filtered, rinsed and dried to obtain the amino polyethylene fiber.

[0011] Step 3, activation treatment:

[0012] The amino polyethylene fiber, 2-furan acrolein and anhydrous ethanol are mixed and dispersed uniformly, and then a catalyst is added, and the temperature is raised under the protection of nitrogen for reaction. After the reaction is completed, the solvent is removed, and the activated polyethylene fiber is obtained after washing and drying.

[0013] Step 4, modification treatment:

[0014] The activated polyethylene fiber, 2-mercaptomethylbenzimidazole and anhydrous ethanol are mixed, nitrogen is introduced as a protective gas, a photoinitiator is added, and a stirring reaction is carried out under ultraviolet light irradiation. After the reaction is completed, the solvent is removed, and the fiber is washed and dried to obtain a modified polyethylene fiber.

[0015] Step 5, Spinning:

[0016] The modified polyethylene fiber is processed through the steps of opening, drawing, roving, spinning, winding, doubling and twisting to obtain modified polyethylene yarn;

[0017] Step 6, Textile fabric:

[0018] The modified polyethylene yarn is knitted using a weft knitting circular machine to obtain a knitted fabric.

[0019] Preferably, in step 1, the mass fraction of hydrogen peroxide is 10%-30%, and the mass fraction of polyethylene fiber and hydrogen peroxide is 1:10-20.

[0020] Preferably, in step 1, the number average molecular weight of the polyethylene fiber is 1-3 million.

[0021] Preferably, in step 1, the treatment temperature is 25-45° C., and the treatment time is 1-5 h.

[0022] Preferably, in step 2, the mass fraction of the ethanol solution is 30%-70%; the mass ratio of the pretreated polyethylene fiber, the aminosilane coupling agent and the ethanol solution is 1:0.2-0.6:10-20.

[0023] Preferably, in step 2, the aminosilane coupling agent is KH-550 or KH-602.

[0024] Preferably, in step 2, the treatment temperature is 50-70° C., and the treatment time is 2-6 hours.

[0025] Preferably, in step 3, the mass ratio of the amino polyethylene fiber, 2-furanacrolein and anhydrous ethanol is 1:0.18-0.36:20-30.

[0026] Preferably, in step 3, the catalyst is triethylamine, and the amount added is 3.5%-8.5% of the mass of 2-furanacrolein.

[0027] Preferably, in step 3, the temperature of the temperature-raising reaction is 70-80° C., and the time of the temperature-raising reaction is 2-8 hours.

[0028] Preferably, in step 4, the mass ratio of activated polyethylene fiber, 2-mercaptomethylbenzimidazole and anhydrous ethanol is 1:0.24-0.48:20-30.

[0029] Preferably, in step 4, the photoinitiator is benzoin dimethyl ether or benzophenone, and the added amount is 2%-7% of the mass of 2-mercaptomethylbenzimidazole.

[0030] Preferably, in step 4, the wavelength of ultraviolet light is 365 nm, and the light intensity is 10-30 mW / cm 2 , the stirring reaction time is 0.6-2.4h.

[0031] Preferably, in step 5, the specification of the modified polyethylene yarn is one of 24D / 28F, 50D / 72F, 50D / 144F, 75D / 72F, 75D / 144F, 75D / 288F, 150D / 288F, 150D / 288F, and 150D / 576F.

[0032] Preferably, in step 6, the modified polyethylene yarn is used as both the warp and weft yarns, and the weaving method is a regular warp and weft weaving, that is, the yarns running in the weft direction are bent up and down in sections to form coils, which are successively inserted into the coils formed by the previous yarns, and are cyclically wound into cloth; the warp yarn density of the fabric is 175-193 yarns / 10cm, and the weft yarn density is 169-187 yarns / 10cm.

[0033] In a second aspect, the present invention provides a cool fiber knitted fabric, which is prepared by the above-mentioned preparation method.

[0034] The beneficial effects of the present invention are:

[0035] 1. The present invention prepares a fiber knitted fabric with a cool feeling. The fabric is prepared using modified polyethylene fiber as a raw material. The prepared fabric not only has the cool feeling, lightness and wear resistance of traditional polyethylene fabrics, but also has the advantages of moisture absorption, quick drying and aging resistance.

[0036] 2. Polyethylene fiber has good moisture conductivity, but low moisture absorption, which can easily cause sweating and is also prone to aging. In view of this, the present invention modifies the surface of the polyethylene fiber, thereby increasing the fiber's moisture absorption and aging resistance while ensuring the fiber's strength.

[0037] 3. The process of preparing modified polyethylene fiber of the present invention comprises: firstly activating the fiber with hydrogen peroxide to increase the surface activity of the fiber; then treating the fiber with aminosilane coupling agent to graft a large number of amino groups on the surface of the fiber; then blending the fiber with 2-furanpropenal to cause an amine-aldehyde condensation reaction under the action of a catalyst to obtain a fiber having a double bond and a Schiff base on the surface; finally, subjecting the fiber and 2-mercaptomethylbenzimidazole to a thiol-double bond click chemical reaction under ultraviolet light irradiation to obtain a fiber having a Schiff base, a sulfide group and a benzimidazole group on the surface.

[0038] 4. In the process of modifying polyethylene fibers, the surface strength of the fibers will decrease after being treated with hydrogen peroxide. Subsequently, by introducing furan groups, Schiff bases, sulfide groups and benzimidazole groups on the fiber surface, it was found through testing that not only the hygroscopicity and aging resistance of the fibers are enhanced, but also the strength of the fibers is improved to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The present invention is further described using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention. A person skilled in the art can obtain other drawings based on the following drawings without creative work.

[0040] Figure 1 is a schematic diagram of the process for preparing modified polyethylene fiber according to Example 1 of the present invention;

[0041] Figure 2 It is a scanning electron microscope (SEM) schematic diagram of the preparation of modified polyethylene fiber in Example 1 of the present invention. DETAILED DESCRIPTION

[0042] The technical solution of the present invention is described below through specific examples. It should be understood that the one or more method steps mentioned in the present invention do not exclude the existence of other method steps before and after the combination step or the insertion of other method steps between these explicitly mentioned steps; it should also be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. Moreover, unless otherwise specified, the numbering of each method step is only a convenient tool for identifying each method step, and is not intended to limit the order of arrangement of each method step or to limit the scope of the present invention. The change or adjustment of the relative relationship thereof shall also be regarded as the scope of the present invention without substantially changing the technical content.

[0043] In order to better understand the above technical scheme, the exemplary embodiments of the present invention are described in more detail below. Although exemplary embodiments of the present invention are shown, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present invention and to enable the scope of the present invention to be fully communicated to those skilled in the art.

[0044] The present invention will be further described below in conjunction with the following examples.

[0045] Example 1

[0046] A method for preparing a cool fiber knitted fabric comprises the following steps:

[0047] Step 1, immersing polyethylene fiber (number average molecular weight of 2.3 million) in 20% hydrogen peroxide, the mass fraction of polyethylene fiber and hydrogen peroxide being 1:15, stirring at 35° C. for 3 hours, filtering and collecting the fiber, washing with pure water until the washing liquid is neutral, and drying to obtain pretreated polyethylene fiber;

[0048] Step 2, mixing the pretreated polyethylene fiber and a 50% ethanol solution by mass, adding aminosilane coupling agent KH-550, the mass ratio of the pretreated polyethylene fiber, the aminosilane coupling agent and the ethanol solution is 1:0.4:15, heating to 60°C, and heat preservation treatment for 4 hours. After the treatment, filtering and collecting the fiber, rinsing with water 3 times, and drying to obtain an amino polyethylene fiber;

[0049] Step 3, weigh 2-furanpropenal (C7H6O2) and anhydrous ethanol, mix them, stir them thoroughly until they are evenly dissolved, add aminated polyethylene fiber, the mass ratio of aminated polyethylene fiber, 2-furanpropenal and anhydrous ethanol is 1:0.27:25, after uniform dispersion, add 5.5% of the mass of 2-furanpropenal triethylamine (TEA) as a catalyst, under the protection of nitrogen, heat to 75°C, reflux and stir for 5h, after the reaction is completed, remove the solvent under reduced pressure, wash with water 3 times, and dry to obtain activated polyethylene fiber;

[0050] Step 4, weigh 2-mercaptomethylbenzimidazole (C8H8N2S) and anhydrous ethanol, mix them, stir until they are evenly dissolved, add activated polyethylene fiber, the mass ratio of activated polyethylene fiber, 2-mercaptomethylbenzimidazole and anhydrous ethanol is 1:0.36:25, introduce nitrogen as protective gas, disperse them evenly at room temperature, then add photoinitiator dimethyl benzoate (DMPA) in an amount of 5% of the mass of 2-mercaptomethylbenzimidazole, and irradiate at a wavelength of 365nm and a light intensity of 20mW / cm 2The reaction was stirred under ultraviolet irradiation for 1.8 h. After the reaction was completed, the solvent was removed under reduced pressure, washed with alcohol three times, and dried to obtain modified polyethylene fibers (such as Figure 1 and Figure 2 shown);

[0051] Step 5, treating the modified polyethylene fiber through the steps of opening, drawing, roving, spun yarn, winding, doubling and twisting to obtain a modified polyethylene yarn with a specification of 50D / 72F;

[0052] Step 6, using a weft knitting double-sided circular knitting machine, using the modified polyethylene yarn as both the warp and weft yarns to weave the fabric, the weaving method is a regular warp and weft weaving, that is, the yarn running in the weft direction is bent up and down in sections to form a coil, and is successively inserted into the coil formed by the previous yarn, and is cyclically wound into a cloth, and finally a fabric with a warp density of 186 yarns / 10cm and a weft density of 174 yarns / 10cm is obtained.

[0053] Example 2

[0054] A method for preparing a cool fiber knitted fabric comprises the following steps:

[0055] Step 1, immersing polyethylene fiber (number average molecular weight of 1.2 million) in 10% hydrogen peroxide, the mass fraction of polyethylene fiber and hydrogen peroxide being 1:10, stirring at 25° C. for 1 hour, filtering and collecting the fiber, washing with pure water until the washing liquid is neutral, and drying to obtain pretreated polyethylene fiber;

[0056] Step 2, mixing the pretreated polyethylene fiber and a 30% ethanol solution by mass, adding aminosilane coupling agent KH-550, the mass ratio of the pretreated polyethylene fiber, the aminosilane coupling agent and the ethanol solution is 1:0.2:10, heating to 50°C, and heat preservation for 2 hours. After the treatment, filtering and collecting the fiber, rinsing with water twice, and drying to obtain an amino polyethylene fiber;

[0057] Step 3, weigh 2-furanpropenal and anhydrous ethanol, mix them, stir them until they are evenly dissolved, add aminated polyethylene fiber, the mass ratio of aminated polyethylene fiber, 2-furanpropenal and anhydrous ethanol is 1:0.18:20, after uniform dispersion, add 3.5% of the mass of 2-furanpropenal triethylamine as a catalyst, under the protection of nitrogen, heat to 70° C., reflux and stir for 2 hours, after the reaction is completed, remove the solvent under reduced pressure, wash with water twice, and dry to obtain activated polyethylene fiber;

[0058] Step 4, weigh 2-mercaptomethylbenzimidazole and anhydrous ethanol, mix them, stir until they are evenly dissolved, add activated polyethylene fiber, the mass ratio of activated polyethylene fiber, 2-mercaptomethylbenzimidazole and anhydrous ethanol is 1:0.24:20, introduce nitrogen as protective gas, disperse them evenly at room temperature, and then add photoinitiator benzoin dimethyl ether in an amount of 2% of the mass of 2-mercaptomethylbenzimidazole, at a wavelength of 365nm and a light intensity of 10mW / cm 2 The reaction was stirred under the irradiation of ultraviolet light for 0.6 h. After the reaction was completed, the solvent was removed under reduced pressure, and the fiber was washed with alcohol twice and dried to obtain modified polyethylene fiber.

[0059] Step 5, treating the modified polyethylene fiber through the steps of opening, drawing, roving, spinning, winding, doubling and twisting to obtain a modified polyethylene yarn with a specification of 50D / 144F;

[0060] Step 6, using a weft knitting double-sided circular knitting machine, using the modified polyethylene yarn as both the warp and weft yarns to weave the fabric, the weaving method is a regular warp and weft weaving, that is, the yarn running in the weft direction is bent up and down section by section to form a coil, and is successively inserted into the coil formed by the previous yarn, and is cyclically wound into a cloth, and finally a fabric with a warp density of 175 yarns / 10cm and a weft density of 169 yarns / 10cm is obtained.

[0061] Example 3

[0062] A method for preparing a cool fiber knitted fabric comprises the following steps:

[0063] Step 1, immersing polyethylene fiber (number average molecular weight of 2.8 million) in 30% hydrogen peroxide, the mass fraction of polyethylene fiber and hydrogen peroxide being 1:20, stirring at 45° C. for 5 hours, filtering and collecting the fiber, washing with pure water until the washing liquid is neutral, and drying to obtain pretreated polyethylene fiber;

[0064] Step 2, mixing the pretreated polyethylene fiber and a 70% ethanol solution by mass, adding aminosilane coupling agent KH-602, the mass ratio of the pretreated polyethylene fiber, the aminosilane coupling agent and the ethanol solution is 1:0.6:20, heating to 70°C, and heat preservation for 6 hours. After the treatment, filtering and collecting the fiber, rinsing with water 5 times, and drying to obtain an amino polyethylene fiber;

[0065] Step 3, weigh 2-furanpropenal and anhydrous ethanol, mix them, stir them until they are evenly dissolved, add aminated polyethylene fiber, the mass ratio of aminated polyethylene fiber, 2-furanpropenal and anhydrous ethanol is 1:0.36:30, after uniform dispersion, add 8.5% of the mass of 2-furanpropenal triethylamine as a catalyst, under the protection of nitrogen, heat to 80° C., reflux and stir for 8 hours, after the reaction is completed, remove the solvent under reduced pressure, wash with water 5 times, and dry to obtain activated polyethylene fiber;

[0066] Step 4, weigh 2-mercaptomethylbenzimidazole and anhydrous ethanol, mix, stir until evenly dissolved, add activated polyethylene fiber, the mass ratio of activated polyethylene fiber, 2-mercaptomethylbenzimidazole and anhydrous ethanol is 1:0.48:30, introduce nitrogen as protective gas, disperse evenly at room temperature, then add photoinitiator benzophenone, the addition amount is 7% of the mass of 2-mercaptomethylbenzimidazole, at a wavelength of 365nm and a light intensity of 30mW / cm 2 The reaction was stirred under the irradiation of ultraviolet light for 2.4 hours. After the reaction was completed, the solvent was removed under reduced pressure, and the fiber was washed with alcohol for 5 times and then dried to obtain modified polyethylene fiber.

[0067] Step 5, treating the modified polyethylene fiber through the steps of opening, drawing, roving, spun yarn, winding, doubling and twisting to obtain a modified polyethylene yarn with a specification of 75D / 144F;

[0068] Step 6, using a weft knitting double-sided circular knitting machine, using the modified polyethylene yarn as both the warp and weft yarns to weave the fabric, the weaving method is a regular warp and weft weaving, that is, the yarn running in the weft direction is bent up and down in sections to form a coil, and is successively inserted into the coil formed by the previous yarn, and is cyclically wound into a cloth, and finally a warp density of 175-193 yarns / 10cm and a weft density of 169-187 yarns / 10cm are obtained. Fabric.

[0069] Comparative Example 1

[0070] A method for preparing a cool fiber knitted fabric, which is different from Example 1 only in that the modified polyethylene fiber used in Example 1 is replaced by an amino polyethylene fiber, that is:

[0071] Step 1, preparing amino polyethylene fiber, the same as in Example 1;

[0072] Step 2, treating the amino polyethylene fiber through the steps of opening, drawing, roving, spinning, winding, doubling and twisting to obtain a modified polyethylene yarn with a specification of 50D / 72F;

[0073] Step 3, using modified polyethylene yarn as both warp yarn and weft yarn to prepare fabric, the parameters are the same as those in Example 1.

[0074] Comparative Example 2

[0075] A method for preparing a cool fiber knitted fabric, which is different from Example 1 only in that the modified polyethylene fiber used in Example 1 is replaced by activated polyethylene fiber, that is:

[0076] Step 1, preparing activated polyethylene fiber, the same as in Example 1;

[0077] Step 2, treating the activated polyethylene fiber through the steps of opening, drawing, roving, spinning, winding, doubling and twisting to obtain a modified polyethylene yarn with a specification of 50D / 72F;

[0078] Step 3, using modified polyethylene yarn as both warp yarn and weft yarn to prepare fabric, the parameters are the same as those in Example 1.

[0079] Comparative Example 3

[0080] A method for preparing a cool fiber knitted fabric is different from Example 1 only in that the preparation method of the modified polyethylene fiber is different, and the other steps are the same. The preparation method of the modified polyethylene fiber in this comparative example includes:

[0081] Step 1, preparing pretreated polyethylene fiber, the same as in Example 1;

[0082] Step 2, pretreated polyethylene fiber, 2-furan acrolein, 2-mercaptomethylbenzimidazole and anhydrous ethanol are mixed, the mass ratio of pretreated polyethylene fiber, 2-furan acrolein, 2-mercaptomethylbenzimidazole and anhydrous ethanol is 1:0.27:0.36:25, nitrogen is introduced as a protective gas, and the mixture is evenly dispersed at room temperature, 5% of benzoin dimethyl ether by mass of 2-mercaptomethylbenzimidazole is added as a photoinitiator, and the mixture is subjected to a light intensity of 20 mW / cm2 at a wavelength of 365 nm. 2 The reaction was stirred under ultraviolet light irradiation for 1.8 hours. After the reaction was completed, the solvent was removed under reduced pressure, and the fiber was washed with alcohol three times and then dried to obtain modified polyethylene fiber.

[0083] The properties of the fabrics prepared in Example 1 and Comparative Examples 1-3 were tested accordingly, and the test items included breaking strength, moisture absorption and quick drying, and aging resistance. Specifically:

[0084] 1. Breaking strength. The present invention only tests the breaking strength of the yarn: under standard atmospheric conditions (20±2°C, 65±5%RH), three samples of each type are tested, referring to the standard of GB / T 3916-2013, and the breaking strength of the isokinetic tensile tester is measured, and the average value is taken.

[0085] 2. Moisture absorption and quick-drying property: The testing standard refers to GB / T 21655.2-2009 "Evaluation of moisture absorption and quick-drying property of textiles", and the specific level refers to Table 1;

[0086] 3. Aging resistance: The testing standard refers to GB / T 31899-2015 "Textile Weathering Test-UV Exposure", specifically: use 340nm UVA lamp with an irradiance of 200W / m 2 The samples were treated with ultraviolet light at a blackboard temperature of 60°C for 120 h, and the breaking strength retention rate was tested.

[0087] Table 1 Moisture absorption and quick drying performance index classification

[0088]

[0089] The test results are shown in Table 2:

[0090] Table 2 Performance test results

[0091]

[0092] It can be seen from the test results in Table 2 that the fabric prepared in Example 1 of the present invention can not only maintain good moisture absorption and quick-drying properties, but also has higher strength and better aging resistance, indicating that the fabric prepared in Example 1 of the present invention has the advantages of high strength, moisture absorption and perspiration, and aging resistance.

[0093] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms should not be understood as necessarily being directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0094] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A method for preparing a cool fiber knitted fabric, characterized in that: The following steps are involved: Step 1, soaking polyethylene fiber in hydrogen peroxide, stirring, filtering, washing and drying to obtain pretreated polyethylene fiber; Step 2, mixing the pretreated polyethylene fiber and the ethanol solution, adding an aminosilane coupling agent, heating the mixture, filtering, rinsing and drying the mixture after the treatment, to obtain the amino polyethylene fiber; Step 3, adding the amino polyethylene fiber, 2-furan acrolein and anhydrous ethanol, mixing and dispersing them uniformly, then adding the catalyst, heating and reacting under the protection of nitrogen, removing the solvent after the reaction, washing and drying, and obtaining the activated polyethylene fiber; Step 4, mixing the activated polyethylene fiber, 2-mercaptomethylbenzimidazole and anhydrous ethanol, introducing nitrogen as a protective gas, adding a photoinitiator, stirring and reacting under ultraviolet light irradiation, removing the solvent after the reaction, washing and drying, and obtaining a modified polyethylene fiber; Step 5, treating the modified polyethylene fiber through the steps of opening, drawing, roving, spinning, winding, doubling and twisting to obtain modified polyethylene yarn; Step 6, using a weft knitting circular machine to weave the modified polyethylene yarn to obtain a knitted fabric.

2. The method for preparing a cool fiber knitted fabric according to claim 1, characterized in that: In the step 1, the mass fraction of hydrogen peroxide is 10%-30%, and the mass fraction of polyethylene fiber and hydrogen peroxide is 1:10-20; in the step 1, the treatment temperature is 25-45° C., and the treatment time is 1-5 hours.

3. The method for preparing a cool fiber knitted fabric according to claim 1, characterized in that: In the step 2, the mass fraction of the ethanol solution is 30%-70%, and the aminosilane coupling agent is KH-550 or KH-602; the mass ratio of the pretreated polyethylene fiber, the aminosilane coupling agent and the ethanol solution is 1:0.2-0.6:10-20; in the step 2, the treatment temperature is 50-70°C, and the treatment time is 2-6h.

4. The method for preparing a cool fiber knitted fabric according to claim 1, characterized in that: In the step 3, the mass ratio of the amino polyethylene fiber, 2-furanacrolein and anhydrous ethanol is 1:0.18-0.36:20-30; the catalyst is triethylamine, and the added amount is 3.5%-8.5% of the mass of 2-furanacrolein.

5. The method for preparing a cool fiber knitted fabric according to claim 1, characterized in that: In the step 3, the temperature of the temperature-raising reaction is 70-80° C., and the time of the temperature-raising reaction is 2-8 hours.

6. The method for preparing a cool fiber knitted fabric according to claim 1, characterized in that: In the step 4, the mass ratio of the activated polyethylene fiber, 2-mercaptomethylbenzimidazole and anhydrous ethanol is 1:0.24-0.48:20-30; the photoinitiator is benzoin dimethyl ether or benzophenone, and the added amount is 2%-7% of the mass of 2-mercaptomethylbenzimidazole.

7. The method for preparing a cool fiber knitted fabric according to claim 1, characterized in that: In step 4, the wavelength of ultraviolet light is 365 nm, and the light intensity is 10-30 mW / cm 2 , the stirring reaction time is 0.6-2.4h.

8. The method for preparing a cool fiber knitted fabric according to claim 1, characterized in that: In the step 5, the specification of the modified polyethylene yarn is one of 24D / 28F, 50D / 72F, 50D / 144F, 75D / 72F, 75D / 144F, 75D / 288F, 150D / 288F, 150D / 288F, and 150D / 576F.

9. The method for preparing a cool fiber knitted fabric according to claim 1, characterized in that: In step 6, the modified polyethylene yarn is used as both the warp and weft yarns, and the weaving method is a regular weaving of warp and weft in an up-and-down manner; the warp yarn density of the fabric is 175-193 yarns / 10cm, and the weft yarn density is 169-187 yarns / 10cm.

10. A cool fiber knitted fabric, characterized in that: The cool fiber knitted fabric is prepared by the preparation method described in claim 1.

Images