Woven fabric of yarn with special-shaped section

Abstract

The invention relates to the technical field of textile fabrics, in particular to a woven fabric of special-shaped section yarns. Comprising a body, the body is obtained by warp and weft knitting of yarn, the yarn is formed by twisting a plurality of modified PP fibers, the section of each modified PP fiber is of a special-shaped structure, and each modified PP fiber is prepared from, by weight, 75-87% of PP, 5-10% of PTW, 1-2.5% of PP cooling master batch, 1-3% of modified hydrogenated castor oil, 1-10% of porous filler and the balance processing agents. The porous filler is porous silicon dioxide aerogel powder and / or aluminosilicate crystals. According to the present invention, the porous silica aerogel powder and / or the aluminosilicate crystal are / is adopted as the porous filler, and the PTW, the PP cooling master batch and the modified hydrogenated castor oil are combined to perform blending modification with the PP, such that the produced woven fabric has characteristics of good gas permeability, good moisture absorption and good wear resistance, and the wear phenomenon is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of textile fabrics, and in particular to a woven fabric of yarns with special-shaped cross-sections. Background Art

[0002] The textile industry is constantly pursuing the improvement of fabric performance, especially in the field of daily casual clothing, especially pajamas and other close-fitting clothing, and the application of special-section yarns is becoming more and more widespread. These new yarns can not only improve the wear resistance of fabrics, but also give them unique appearance and functionality to meet the needs of different application scenarios. In order to achieve this goal, researchers usually add various functional additives during the yarn manufacturing process and use special processing technology to obtain the ideal comprehensive performance.

[0003] Although existing special-shaped cross-section yarns can improve the air permeability and moisture permeability of fabrics to a certain extent, their water and moisture absorption capacity is still insufficient when used as thin and close-fitting clothing such as yoga clothes, body shapers, sportswear, pajamas, etc., resulting in an inability to effectively produce a cool feeling during wearing. At the same time, close-fitting clothing is easily rubbed by the body during exercise, and special-shaped cross-section fibers have strong cohesion and anti-pilling properties, but compared with circular cross-section fibers, their friction resistance is relatively poor, so they are more susceptible to wear or tear during use, thereby reducing the durability of thin and close-fitting clothing. Therefore, how to significantly improve the air permeability and moisture absorption effect of yarn while maintaining good wear resistance has become a key issue that needs to be solved urgently. Summary of the invention

[0004] In order to obtain higher moisture absorption and air permeability while maintaining better wear resistance, the present application provides a woven fabric of yarns with special cross-sections.

[0005] In a first aspect, the present application provides a woven fabric of a yarn with a special cross-section, comprising a body, wherein the body is obtained by weaving the yarn through warp and weft, wherein the yarn is formed by twisting a plurality of modified PP fibers, wherein the cross-section of the modified PP fiber is a special-shaped structure, and the modified PP fiber is made of the following raw materials in weight percentage: PP75-87% PTW5-10% PP cooling masterbatch 3-5% Modified hydrogenated castor oil 1-3% Porous filler 1-10% The balance is processing aids; The porous filler is porous silica aerogel powder and / or aluminosilicate crystals.

[0006] By adopting the above technical scheme, PP is the abbreviation of polypropylene, and the fiber produced by PP has the characteristics of light weight and high strength, and the special-section PP fiber can not only reduce the pressure of weight during use, but also withstand greater external impact force, high strength and elasticity, wrinkle resistance and shrinkage resistance, breathability and quick drying, so that the woven fabric has the characteristics of light weight and high strength.

[0007] Usually the processing temperature of PP materials is high, but by adding PP cooling masterbatch, the processing temperature of PP materials can be effectively reduced. The main component of the PP cooling masterbatch is peroxide. This component plays a role in reducing the molecular weight of polypropylene in the PP cooling masterbatch, thereby reducing the processing temperature.

[0008] Specifically, peroxide acts as an initiator in PP cooling masterbatch, which decomposes to produce free radicals, thereby reducing the molecular weight of polypropylene, thereby reducing the processing temperature. It also causes the polypropylene molecular chain to break, thereby reducing its viscosity, making the processing process smoother. In addition, PP cooling masterbatch can compensate for the reduction in strength and toughness of PP products caused by high-temperature processing.

[0009] PTW is a terpolymer containing glycidyl ester epoxy, named ethylene-butyl acrylate-glycidyl methacrylate terpolymer, which enhances the toughness and compatibility of plastics. It has a synergistic effect with PP cooling masterbatch, can reduce PP processing temperature, and improve PP processing smoothness, and interact with porous fillers to further enhance PP toughness.

[0010] Modified hydrogenated castor oil plays a role in lubrication, improving the processing performance and surface properties of the material. It is compounded with PTW and PP cooling masterbatch to play a synergistic role, further improving the processing fluidity and convenience of PP. At the same time, it can also promote the compatibility and dispersibility of porous fillers and raw material systems, and further improve the toughness, low-temperature processing and water absorption and hygroscopicity of modified PP fibers.

[0011] Porous silica aerogel powder and aluminosilicate crystals have extremely high specific surface area and porosity, which makes the fiber fabric made of them light. Its porous structure is conducive to the circulation of gas, thereby improving the air permeability of the fabric and making the wearer feel more comfortable. At the same time, it can also play a filling and toughening role, and combined with PTW, PP cooling masterbatch, modified hydrogenated castor oil, and PP for blending and modification, the modified PP fiber obtained has better air permeability, hygroscopicity and wear resistance, so that the woven fabric produced by the yarn has better air permeability, hygroscopicity and wear resistance, reducing the phenomenon of wear.

[0012] Preferably, the body weight is 120-150g / m 2 .

[0013] By adopting the above technical solution, the weight of the body is set to 120-150g / m 2 , so that the woven fabric has good wear resistance, softness, moisture absorption and breathability while ensuring lightness, making the finished surface more comfortable to wear.

[0014] Preferably, the modified PP fiber has a diameter of 30-50 μm.

[0015] By adopting the above technical solution, the wire diameter of the modified PP fiber is controlled within the range of 30-50 microns, thereby ensuring that the fiber has good wear resistance and moderate flexibility, giving the woven fabric better comfort and durability while maintaining high strength.

[0016] Preferably, the particle size of the porous filler is 0.5-5 μm.

[0017] By adopting the above technical solution, the porous filler is dispersed more evenly in the yarn, the hygroscopicity and moisture absorption of the woven fabric are improved, and the hydrophilicity and comfort of the fabric are enhanced.

[0018] Specifically, the particle size of the porous filler is selected to be 0.5-5 μm, which further improves the dispersion of the porous filler in the fabric, ensures that the modified PP fiber has better moisture absorption and air permeability, and enhances the overall performance of the woven fabric.

[0019] Preferably, the processing aid is one or more of an antioxidant, an anti-UV agent, a lubricant, and a colorant.

[0020] By adopting the above technical solution, the processing aid is selected from one or more of antioxidants, anti-UV agents, lubricants, and colorants, which can improve the antioxidant properties, anti-ultraviolet performance, processing lubricity and surface color diversity of the woven fabric.

[0021] Preferably, the porous filler is a hydrophilic modified porous filler, and the hydrophilic modified porous filler is made of the following raw materials in percentage by weight: Diluent 40-50% Catalyst 0.1-0.3% Hydroxy-polycaprolactone-carboxyl 0.1-0.6% Hydroxylated polyethylene glycol polycaprolactone diblock copolymer 0.1-0.5% Dimethacrylate urethane 0.3-0.8% Methacryloylethyl sulfobetaine 0.5-1% N-β-(Aminoethyl)-γ-aminopropyltrimethoxysilane 1-3% The balance is porous filler.

[0022] Hydroxyl-polycaprolactone-carboxyl and hydroxy polyethylene glycol polycaprolactone diblock copolymers are both polycaprolactone derivatives, containing hydrophilic groups and active groups. Hydrophilic modified porous fillers are compounded with dimethacrylate carbamate, methacryloylethyl sulfobetaine, and N-β-(aminoethyl)-γaminopropyltrimethoxysilane to synergistically promote dispersion, improve the dispersion compatibility of porous fillers in the raw material system, and enhance hydrophilicity, making it easier to absorb moisture.

[0023] The hydrophilic effect is then synergistically improved with the hydroxyl polyethylene glycol polycaprolactone diblock copolymer and the hydroxyl-polycaprolactone-carboxyl group, thereby further improving the hygroscopicity, moisture absorption and compatibility stability of the porous filler with the polymer. The modified porous filler interacts with PTW, PP cooling masterbatch and modified hydrogenated castor oil, so that the woven fabric produced by the modified PP fiber has better air permeability, moisture permeability and wear resistance, while giving the fabric soft and skin-friendly properties, thereby improving the comfort and durability of wearing clothing.

[0024] Preferably, the diluent is ethyl acetate and / or butyl acetate.

[0025] By adopting the above technical solution, ethyl acetate and / or butyl acetate are selected as the diluent in the hydrophilic modified porous filler, which helps to improve the dispersibility and compatibility of the porous filler in the raw material system, further enhance the hygroscopicity and moisture absorption, and at the same time make the fabric soft and skin-friendly.

[0026] Preferably, the catalyst is benzoyl peroxide.

[0027] By adopting the above technical solution, benzoyl peroxide is selected as the catalyst. In the process of preparing the hydrophilic modified porous filler, the chemical reaction between the components can be effectively promoted, the reaction efficiency can be improved, and the hydrophilic modified porous filler can have better hygroscopicity and moisture absorption properties, and good skin affinity.

[0028] Preferably, the hydrophilic modified porous filler is prepared by the following method: According to the weight percentage, hydroxy-polycaprolactone-carboxyl and hydroxy-polyethylene glycol polycaprolactone diblock copolymer solvents are weighed in 1 / 2 diluent to obtain a mixture A; dimethacrylate carbamate, methacryloylethyl sulfobetaine, N-β-(aminoethyl)-γaminopropyltrimethoxysilane, a catalyst, and a porous filler are weighed and mixed with 1 / 2 diluent, heated to 60-70° C., reacted for 20-30 minutes, and reactant B is obtained. The mixture A is then added, and the reaction with the reactant B is continued for 20-30 minutes. The diluent is removed and dried to obtain a hydrophilic modified porous filler.

[0029] The above process and process conditions utilize hydroxy-polycaprolactone-carboxyl and hydroxy polyethylene glycol polycaprolactone diblock copolymers to be uniformly dispersed in a diluent to obtain a mixture A; then dimethacrylate carbamate, methacryloylethyl sulfobetaine, N-β-(aminoethyl)-γaminopropyltrimethoxysilane, a catalyst, a porous filler and 1 / 2 of the diluent are uniformly mixed, and under the action of the catalyst, the active groups contained in the system are reacted, and then the mixture A is added, and the active groups in the mixture A react again, such as an active group in the hydroxy-polycaprolactone-carboxyl group reacts with the active group in the reactant B raw material system to produce a macromolecular polymer and coat the porous filler, so that the surface of the porous filler is coated with a layer of water-absorbing, hydrophilic, breathable and moisture-permeable coating film, and at the same time, the compatibility and dispersibility of the porous filler in the polypropylene fiber raw material system can be further improved, and the moisture permeability, air permeability and wear resistance of the fabric can be further improved.

[0030] In summary, the hydrophilic modified porous filler is prepared by a specific method so that each component is evenly dispersed in the raw material system, which improves the compatibility and hydrophilicity of the porous filler, further enhances the hygroscopicity and moisture absorption properties, and at the same time has the effects of softness, skin-friendliness and wear resistance.

[0031] Preferably, the modified PP fiber is prepared by the following method: According to the weight percentage, PP, PTW and PP cooling masterbatch are weighed, heated to melt, mixed evenly, cooled, and then modified hydrogenated castor oil, processing aids and porous fillers are added to mix evenly, cooled, and crushed to obtain powder; the powder is melted and drawn, and the cross-section of the drawing nozzle is special-shaped to obtain modified PP fiber.

[0032] By adopting the above technical scheme, the modified PP fiber is melt-mixed within a specific temperature range during the preparation process, and then modified hydrogenated castor oil, processing aids and porous fillers are added to ensure uniform mixing of the raw materials, effectively improving the dispersion and compatibility of the fiber; after cooling and crushing, melt spinning is carried out, and the modified PP fiber is passed through a spinning nozzle with a special cross-section to ensure that the modified PP fiber has a specific special-shaped cross-sectional structure, further improving the comprehensive performance of the woven fabric, including light weight, air permeability, toughness, wear resistance, softness and hygroscopicity.

[0033] In summary, this application has the following beneficial effects: 1. Porous silica aerogel powder and / or aluminosilicate crystals are used as porous fillers, combined with PTW, PP cooling masterbatch, and modified hydrogenated castor oil, and blended with PP to make the obtained modified PP fiber have better air permeability, hygroscopicity and wear resistance, and the woven fabric produced by the obtained yarn has better air permeability, hygroscopicity and wear resistance, reducing the phenomenon of wear.

[0034] 2. The hydrophilic modified porous filler is compounded with dimethacrylate carbamate, methacryloylethyl sulfobetaine, and N-β-(aminoethyl)-γaminopropyltrimethoxysilane, and then synergistically improved with hydroxy polyethylene glycol polycaprolactone diblock copolymer and hydroxy-polycaprolactone-carboxyl to enhance the hydrophilic effect, thereby improving the hygroscopicity, moisture absorption and compatibility stability of the porous filler with the polymer. The modified porous filler interacts with PTW, PP cooling masterbatch, and modified hydrogenated castor oil, so that the woven fabric produced by the modified PP fiber has better air permeability, moisture permeability, and wear resistance, while giving the fabric soft and skin-friendly properties, thereby improving the comfort and durability of the clothing. DETAILED DESCRIPTION

[0035] The present application is further described in detail below with reference to the embodiments.

[0036] The specific surface area of ​​porous silica aerogel powder is 600-1000 square meters / gram, the pore size is 10-50nm, it has a three-dimensional mesh nanoporous structure, and the porosity is as high as 80-90%; Aluminosilicate crystal specific surface area: 200-500 m2 / g, pore size 5-30nm, porosity up to 60-70%; PP number average molecular weight 40,000-60,000; PTW DuPont PTW, USA; PP cooling masterbatch Dongguan Xingyuan Chemical Co., Ltd., model XY12100 The modified hydrogenated castor oil is Arkema CRAYVALLAC MT thixotropic agent polyamide modified hydrogenated castor oil; The number average molecular weight of hydroxy-polycaprolactone-carboxyl is 1000-2000; the molecular structure is as follows: Hydroxylated polyethylene glycol polycaprolactone diblock copolymer, n is 1-5; m is 3-8; the molecular structure is as follows:

[0037] Preparation example of modified porous filler Preparation Example 1 A hydrophilic modified porous filler is prepared by the following method: According to the weight percentage, 0.1% hydroxy-polycaprolactone-carboxyl and 0.5% hydroxy-polyethylene glycol-polycaprolactone diblock copolymer solvent were weighed in 20% diluent to obtain a mixture A; 0.3% dimethacrylate carbamate, 0.5% methacryloylethyl sulfobetaine, 3% N-β-(aminoethyl)-γaminopropyltrimethoxysilane, 55.59% porous filler and 20% diluent were weighed and put into a reaction kettle, stirred at a speed of 100 r / min for 10 minutes to fully mix, then heated to 63°C, reacted for 30 minutes to obtain a reactant B, then added to the mixture A, continued to stir and react with the reactant B for 30 minutes, heated to 80°C, distilled under reduced pressure to remove all the diluent, and dried to obtain a hydrophilic modified porous filler.

[0038] Preparation Example 2-3 The difference between Preparation Example 2-3 and Preparation Example 1 is that the amount of raw materials used is different, as shown in Table 1; The amount of raw materials used in Preparation Examples 1-3 (%) Preparation Example Comparative Example Preparation Comparative Example 1 The difference between Preparation Comparative Example 1 and Preparation Example 1 is that the hydroxy-polycaprolactone-carboxyl group is replaced by an equal amount of hydroxyl polyethylene glycol polycaprolactone diblock copolymer.

[0039] Preparation Comparative Example 2 The difference between Preparation Comparative Example 2 and Preparation Example 1 is that the hydroxyl polyethylene glycol polycaprolactone diblock copolymer is replaced by hydroxyl-polycaprolactone-carboxyl in equal amounts.

[0040] Preparation Comparative Example 3 The difference between Preparation Comparative Example 3 and Preparation Example 1 is that an equal amount of dimethacrylate carbamate is replaced by N-β-(aminoethyl)-γaminopropyltrimethoxysilane.

[0041] Preparation Comparative Example 4 The difference between Preparation Comparative Example 4 and Preparation Example 1 is that methacryloylethyl sulfobetaine is replaced by an equal amount of N-β-(aminoethyl)-γaminopropyltrimethoxysilane.

[0042] Preparation Comparative Example 5 The difference between the preparation of comparative example 5 and comparative example 1 is that hydroxy-polycaprolactone-carboxyl, hydroxy polyethylene glycol polycaprolactone diblock copolymer, dimethacrylate carbamate, and methacryloylethyl sulfobetaine are replaced by N-β-(aminoethyl)-γaminopropyltrimethoxysilane in equal amounts. Example

[0043] Example 1 The woven fabric of the special-shaped cross-section yarn includes a body, which is obtained by weaving the yarn through warp and weft, and the yarn is formed by twisting a number of modified PP fibers, with a twist degree of 600 twists / m. The gram weight of the body can be 120g / m 2 , 125g / m 2 , 130g / m 2 , 140g / m 2 or 150g / m 2 , in this embodiment, the preferred thickness is 128 g / m 2 The wire diameter of the modified PP fiber can be 30 μm, 35 μm, 40 μm, 45 μm or 50 μm; in this embodiment, it is preferably 35 μm; the cross-sectional shape of the modified PP fiber of the present application is a regular hexagon.

[0044] The modified PP fiber is prepared by the following method: According to the weight percentage, 73% PP, 10% PTW and 1% PP cooling masterbatch are weighed and heated to 230°C to melt and mix evenly, then cooled to 180°C, 3% modified hydrogenated castor oil, 5% processing aid and 8% porous filler are added and mixed evenly, cooled to 30°C and crushed to obtain powder; the powder is melted and drawn, and the cross-section of the drawing nozzle is special-shaped to obtain modified PP fiber.

[0045] The porous filler is porous silica aerogel powder, and the particle size of the porous filler is 0.5 μm; the processing aids are antioxidant 1010, anti-UV agent 234, and polyethylene wax (number average molecular weight is 2000-3000) in a weight ratio of 1:1:2.

[0046] Example 2-3 The difference between Example 2-3 and Example 1 is that the raw material dosage composition of the modified PP fiber is different, as shown in Table 2; Table 2 Raw material dosage of Examples 1-3 (%) raw material Example 1 Example 2 Example 3 PP 75 80 87 PTW 10 5 7.5 PP 1 1.8 2.5 Modified hydrogenated castor oil 3 2 1 Porous filler 8 9.2 1 The balance is processing aids 3 2 1 Example 4 The difference between Example 4 and Example 2 is that the porous filler is aluminosilicate crystals.

[0047] Example 5 The difference between Example 5 and Example 2 is that the porous filler is composed of porous silica aerogel powder and aluminosilicate crystals in a weight ratio of 3:1.5.

[0048] Example 6 The difference between Example 6 and Example 2 is that the porous filler is composed of porous silica aerogel powder and aluminosilicate crystals in a weight ratio of 3:2.

[0049] Example 7 The difference between Example 7 and Example 2 is that the porous filler is composed of porous silica aerogel powder and aluminosilicate crystals in a weight ratio of 3:2.8.

[0050] Embodiment 8-15 The difference between Examples 8-15 and Example 6 is that the porous filler is a modified porous filler, and the modified porous fillers of Examples 8-15 have different sources, as shown in Table 3; Table 3 Sources of modified porous fillers of Examples 8-15 Comparative Example Comparative Example 1 The difference between Comparative Example 1 and Example 1 is that PTW is replaced by PP in equal amounts.

[0051] Comparative Example 2 The difference between Comparative Example 2 and Example 1 is that the porous filler is replaced by PP in equal amount.

[0052] Comparative Example 3 The difference between Comparative Example 3 and Example 1 is that the cross-sectional shape of the modified PP fiber is a circular cross-sectional shape.

[0053] Comparative Example 4 The difference between Comparative Example 4 and Example 1 is that the porous filler is replaced by solid nano-silicon dioxide.

[0054] Performance testing Test method / test method Moisture absorption and perspiration: GB / T21655.1-2008, 5 parallel samples for each test, remove the highest and lowest values ​​and take the average value.

[0055] Air permeability: GB / T5453-199713, (test area: 20cm, test pressure: 100Pa).

[0056] Hardness: The powders obtained in Examples 1-15 and Comparative Examples 1-2 and Comparative Example 4 were placed in an injection molding machine and injection molded into test samples.

[0057] Wear resistance: Refer to ISO12947-1-1998, and use Martindale wear and abrasion tester to test samples, with a pressure of 10 kPa and a speed of 50 r / min. The friction times are 2500 and 4000 respectively, and then the friction degree is evaluated, which is slight wear, moderate wear, and severe wear. The relevant friction degree is recorded.

[0058] Table 4 Experimental data of Examples 1-15 and Comparative Examples 1-4 Combining Example 1 and Comparative Examples 1-4 and Table 4, it can be seen that the wear degree of Comparative Examples 1-4 is severe within 4000 times, while the wear degree of Example 1 is moderate within 4000 times, indicating that the technical solution of the present application is more wear-resistant.

[0059] The hygroscopicity and air permeability of comparative examples 1-3 are lower than those of example 1, while the hardness has no significant change. When the present application adopts the raw material system of modified PP fiber, combined with its cross-sectional shape and the selection of porous filler, it can achieve better wear resistance, air permeability and moisture permeability, and maintain better softness.

[0060] By comparing Example 2 and Example 6, it can be seen that when porous silica aerogel powder and aluminosilicate crystals are compounded, a synergistic effect is achieved, which further improves the comprehensive performance of the woven fabric, making it more wear-resistant, breathable, moisture-permeable and skin-friendly when used for close-fitting clothing such as underwear, thereby improving the user's overall experience.

[0061] By comparing Example 9 with Example 6 and Examples 11-15 and combining with Table 4, it can be seen that the wear degree of Example 6 and Examples 11-15 is moderate wear within 4000 times, while the wear degree of Example 9 within 4000 times is mild wear. In comparison, Example 9 has better wear resistance. And the moisture permeability and air permeability of Example 9 are greater than those of Examples 6 and Examples 11-15. The hardness of Examples 6 and Examples 11-15 is greater than that of Example 9, and the modified PP fiber of the present application is softer.

[0062] It can be seen that when the compound of dimethacrylate carbamate, methacryloylethyl sulfobetaine, and N-β-(aminoethyl)-γaminopropyltrimethoxysilane is used, and then the hydrophilic effect is synergistically improved with the hydroxyl polyethylene glycol polycaprolactone diblock copolymer and the hydroxyl-polycaprolactone-carboxyl group, the hygroscopicity, moisture absorption and compatibility stability of the porous filler with the polymer are improved, and the comprehensive performance of the woven fabric is further improved.

[0063] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. A woven fabric of yarn with a special cross-section, comprising a body, wherein the body is obtained by weaving yarns through warp and weft, wherein the yarns are twisted and formed by twisting a plurality of modified PP fibers, wherein the cross-section of the modified PP fibers is a special-shaped structure, and wherein: The modified PP fiber is prepared from the following raw materials in weight percentage: PP75-87% PTW5-10% PP cooling masterbatch 1-2.5% Modified hydrogenated castor oil 1-3% Porous filler 1-10% The balance is processing aids; The porous filler is porous silica aerogel powder and / or aluminosilicate crystals.

2. A woven fabric of yarn with a special-shaped cross-section according to claim 1, characterized in that: The body weight is 120-150g / m 2 The woven fabric of the special-section yarn according to claim 1 is characterized in that the wire diameter of the modified PP fiber is 30-50 μm.

3. A woven fabric of yarn with a special-shaped cross-section according to claim 1, characterized in that: The particle size of the porous filler is 0.5-5 μm.

4. A woven fabric of yarn with a special-shaped cross-section according to claim 1, characterized in that: The processing aid is one or more of an antioxidant, an anti-UV agent, a lubricant, and a colorant.

5. A woven fabric of yarn with a special-shaped cross-section according to claim 6, characterized in that: The porous filler is composed of porous silica aerogel powder and aluminosilicate crystals in a weight ratio of 3:(1.5-2.8).

6. A woven fabric of special-shaped cross-section yarn according to any one of claims 1 to 6, characterized in that: The porous filler is a hydrophilic modified porous filler, and the hydrophilic modified porous filler is made of the following raw materials in weight percentage: Diluent 40-50% Catalyst 0.1-0.3% Hydroxy-polycaprolactone-carboxyl 0.1-0.6% Hydroxylated polyethylene glycol polycaprolactone diblock copolymer 0.1-0.5% Dimethacrylate urethane 0.3-0.8% Methacryloylethyl sulfobetaine 0.5-1% N-β-(Aminoethyl)-γ-aminopropyltrimethoxysilane 1-3% The balance is porous filler.

7. A woven fabric of yarn with a special-shaped cross-section according to claim 7, characterized in that: The diluent is ethyl acetate and / or butyl acetate, and the catalyst is benzoyl peroxide.

8. A woven fabric of yarn with a special-shaped cross section according to claim 7, characterized in that: The hydrophilic modified porous filler is prepared by the following method: According to the weight percentage, hydroxy-polycaprolactone-carboxyl and hydroxy-polyethylene glycol polycaprolactone diblock copolymer solvents are weighed in 1 / 2 diluent to obtain a mixture A; dimethacrylate carbamate, methacryloylethyl sulfobetaine, N-β-(aminoethyl)-γaminopropyltrimethoxysilane, a catalyst, and a porous filler are weighed and mixed with 1 / 2 diluent, heated to 60-70° C., reacted for 20-30 minutes, and reactant B is obtained. The mixture A is then added, and the reaction with the reactant B is continued for 20-30 minutes. The diluent is removed and dried to obtain a hydrophilic modified porous filler.

9. A woven fabric of yarns with special-shaped cross-sections according to any one of claims 1 to 9, characterized in that: The modified PP fiber is prepared by the following method: According to the weight percentage, PP, PTW and PP cooling masterbatch are weighed, heated to melt, mixed evenly, cooled, and then modified hydrogenated castor oil, processing aids and porous fillers are added to mix evenly, cooled, and crushed to obtain powder; the powder is melted and drawn, and the cross-section of the drawing nozzle is special-shaped to obtain modified PP fiber.

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