Degradable non-woven fabric, preparation method therefor and use thereof

Abstract

The present application relates to the technical field of non-woven materials, and specifically discloses a degradable non-woven fabric, a preparation method therefor and a use thereof. The degradable non-woven fabric comprises 100 parts of polylactic acid, 10-20 parts of polyamide elastomer and 5-8 parts of nano titanium dioxide. The preparation method comprises: drying polylactic acid, a polyamide elastomer, nano titanium dioxide and an antioxidant, to obtain dried polylactic acid, polyamide elastomer, nano titanium dioxide and antioxidant; stirring and mixing the dried polylactic acid, polyamide elastomer, nano titanium dioxide and antioxidant, then performing melt extrusion, spinning into fibers, and finally cooling, drawing into a web and calendering, to obtain the non-woven fabric. The degradable non-woven fabric of the present application can be used in sporting goods and sports apparel; the fabric is not only environmentally friendly, but also provides a comfortable close-fitting feeling.

Description

A degradable non-woven fabric and its preparation method and application Technical Field

[0001] The present application relates to the technical field of nonwoven materials, and more specifically, to a degradable nonwoven fabric and a preparation method and application thereof. Background Art

[0002] Non-woven fabrics, also known as non-woven fabrics, needle-punched cotton, needle-punched non-woven fabrics, etc., are mostly made of plastic particles as raw materials. They are produced through a continuous one-step process of high-temperature melting, spinning, laying, and hot pressing and winding. They are moisture-proof, breathable, flexible, lightweight, non-combustible, easy to decompose, non-toxic and non-irritating, rich in colors, and low in price.

[0003] However, most of the plastic raw materials used to prepare non-woven fabrics are polyester. Because polyester has poor degradability, non-woven fabrics prepared using polyester have the problem of environmental pollution.

[0004] Summary of the Invention

[0005] In order to improve the degradability of non-woven fabrics, the present application provides a degradable non-woven fabric and a preparation method and application thereof.

[0006] In the first aspect, the present application provides a biodegradable non-woven fabric, which adopts the following technical solution:

[0007] A degradable non-woven fabric comprising the following components in parts by weight:

[0008] 100 parts of polylactic acid;

[0009] 10-20 parts of polyamide elastomer;

[0010] 5-8 parts of nano titanium dioxide;

[0011] 2-3 parts of antioxidants.

[0012] Polylactic acid is made from lactic acid fermented from plant starch through polymerization. It can be completely degraded by microorganisms in the natural environment and is a renewable and environmentally friendly material.

[0013] Polyamide elastomers are block copolymers containing aliphatic polyester or polyether soft segments and polyamide hard segments in the main chain of the molecule.

[0014] By adopting the above technical scheme, the nonwoven fabric prepared by melt blending components such as polylactic acid, polyamide elastomer, and nano titanium dioxide, on the one hand, because polylactic acid and polyamide elastomer have good compatibility and can be evenly dispersed in the polylactic acid, the soft segment in the polyamide elastomer and the polylactic acid segment have strong physical entanglement. Therefore, when damaged by external force, the polyamide elastomer can absorb part of the deformation energy and produce a large amount of silver streaks and shear bands, thereby improving the toughness of the nonwoven fabric. On the other hand, the addition of nano titanium dioxide promotes the heterogeneous nucleation process of polylactic acid, is conducive to improving the crystallinity of polylactic acid, increases the intermolecular force, and makes the final nonwoven fabric have good toughness and strength. Simultaneously, polyamide elastomer and nano titanium dioxide have good heat resistance, and adding polylactic acid to carry out melt blending is conducive to improving the heat resistance of the final nonwoven fabric.

[0015] Therefore, the non-woven fabric prepared with components such as polylactic acid, polyamide elastomer and nano-titanium dioxide has good degradability, toughness, strength and heat resistance.

[0016] Preferably, the polylactic acid has a melting point of 165-175° C. and a melt index of 9-18 g / 10 min.

[0017] By adopting the above technical solution, polylactic acid with the above melting point has a certain degree of crystallinity and good mechanical properties; and polylactic acid with the above melt index has good processability. Therefore, when the above polylactic acid and polyamide elastomer are melt-blended, both have high processability and good compatibility, which is conducive to improving the toughness, strength, and heat resistance of the resulting nonwoven fabric.

[0018] Preferably, the polylactic acid has a melting point of 165° C. and a melt index of 10 g / 10 min.

[0019] By adopting the above technical solution, the polylactic acid with the above melting point and melt index has medium viscosity and better processing performance. After melt blending with components such as polyamide elastomer, the resulting non-woven fabric has better toughness, strength and heat resistance.

[0020] Preferably, the melt volume flow rate of the polyamide elastomer is 24-38 cm 3 / 10min, melting temperature is 151-166℃.

[0021] By adopting the above technical solution, the polyamide elastomer with the above melt volume flow rate and melting temperature has good processing fluidity and mechanical properties. When melt-blended with polylactic acid, it is beneficial for the soft segments in the polyamide elastomer to physically entangle with the polylactic acid segments, thereby improving the toughness, strength and heat resistance of the non-woven fabric.

[0022] Preferably, the polyamide elastomer is Care ME55, Care ME40 and Care ME47 one or more.

[0023] By adopting this technical solution, the aforementioned polyamide elastomer is a polyether block amide copolymer, made from a flexible polyether and a rigid polyamide, exhibiting high flexibility and elasticity. Therefore, melt blending this polyamide elastomer with polylactic acid produces a nonwoven fabric with superior toughness, strength, and heat resistance.

[0024] Preferably, the nano titanium dioxide is modified nano titanium dioxide, and its preparation method is: after stirring and mixing isocyanate silane, polyethylene glycol and solvent, first add water, stir and mix, then add nano titanium dioxide, stir and mix, filter and dry to obtain modified nano titanium dioxide.

[0025] By adopting this technical solution, the isocyanate groups in the isocyanate silane and the hydroxyl groups in the polyethylene glycol undergo an addition reaction, resulting in a mixture containing carbamate segments, silane segments, and polyethylene glycol segments. Water is then added to the mixture, and the silane segments hydrolyze upon contact with water to form silanols, which chemically bond with the hydroxyl groups on the surface of the nano-titanium dioxide, thus producing modified nano-titanium dioxide.

[0026] On the one hand, carbamate is a polar group that can increase the compatibility of modified nano-titanium dioxide in polylactic acid, which is beneficial to promote the heterogeneous nucleation process of polylactic acid and improve the crystallinity of polylactic acid, so that the final non-woven fabric has higher strength and heat resistance.

[0027] On the other hand, because the polyethylene glycol segments on the surface of modified nano-titanium dioxide contain a large number of ether bonds, adding modified nano-titanium dioxide to components such as polylactic acid can increase the flexibility of the polylactic acid molecular segments and improve the toughness of the resulting non-woven fabric. At the same time, perhaps due to the chemical bond between the polyethylene glycol segments and the surface of nano-titanium dioxide, the migration of polyethylene glycol in the non-woven fabric is reduced to a certain extent. Therefore, during testing, it was found that the non-woven fabric still has good toughness after being placed for a long time.

[0028] Preferably, the weight ratio of the nano-titanium dioxide, isocyanate silane and polyethylene glycol is 1:(0.04-0.06):(0.2-0.4).

[0029] By adopting the above technical solution, isocyanate silane and polyethylene glycol are added in the above weight ratio to modify the surface of nano titanium dioxide. The obtained modified nano titanium dioxide has good compatibility with components such as polylactic acid, which is conducive to obtaining a non-woven fabric with good toughness and strength.

[0030] Preferably, the molecular weight of the polyethylene glycol is 2000-4000.

[0031] By adopting the above technical solution, the polyethylene glycol of the above molecular weight has good stability and lubricity, and can penetrate into the interior of the polylactic acid molecules along with the distribution of modified nano-titanium dioxide, thereby increasing the lubricity between polylactic acid molecules and improving the flexibility of polylactic acid, thereby improving the toughness of the final non-woven fabric.

[0032] In a second aspect, the present application provides a method for preparing a degradable non-woven fabric, which adopts the following technical solution:

[0033] A method for preparing a degradable non-woven fabric comprises the following steps:

[0034] S1: drying the polylactic acid, polyamide elastomer, nano-titanium dioxide and antioxidant to obtain dried polylactic acid, polyamide elastomer, nano-titanium dioxide and antioxidant;

[0035] S2: After the dried polylactic acid, polyamide elastomer, nano-titanium dioxide and antioxidant are stirred and mixed, they are first melted and extruded, then spun into fibers, and finally cooled and stretched into a web, and rolled to obtain a non-woven fabric.

[0036] By adopting the above technical solution, after polylactic acid, polyamide elastomer, nano titanium dioxide and antioxidant are dry-mixed, during the melt extrusion process, each component has good processing performance and high compatibility, so the resulting non-woven fabric has good degradability, toughness, strength and heat resistance.

[0037] In a third aspect, the present application provides an application of a degradable non-woven fabric, using the following technical solution:

[0038] The invention discloses an application of a degradable non-woven fabric in the preparation of sports goods and sportswear.

[0039] By adopting the above technical solution, the degradable non-woven fabric of the present application has good degradability and toughness, and is used in sports equipment and sportswear, with a comfortable fit.

[0040] In summary, this application has the following beneficial effects:

[0041] 1. In the present application, since degradable polylactic acid is used as the main raw material, and polyamide elastomer and nano-titanium dioxide are added for melt blending, the soft segments in the polyamide elastomer can be physically entangled with the polylactic acid segments, and the nano-titanium dioxide can promote heterogeneous nucleation of the polylactic acid, thereby improving the ability of the polylactic acid to resist external deformation and the crystallinity, which is conducive to obtaining a non-woven fabric with both degradability, toughness, strength and heat resistance;

[0042] 2. In this application, the melt volume flow rate is preferably 24-38cm 3 / 10min, the polyamide elastomer with a melting temperature of 151-166°C has good processing fluidity and good compatibility with polylactic acid when melt blended, which is beneficial to improving the toughness of the obtained non-woven fabric;

[0043] 3. The method of the present application only requires dry mixing of the components and then melt spinning to obtain a degradable and high-toughness non-woven fabric. The preparation method is simple and suitable for large-scale production. DETAILED DESCRIPTION

[0044] The present application is further described in detail below with reference to the embodiments.

[0045] Preparation example of modified nano-titanium dioxide

[0046] Preparation Example 1

[0047] A modified nano-titanium dioxide, the raw materials and their corresponding weights (kg) are shown in the following table.

[0048] The modified nano-titanium dioxide is prepared by stirring and mixing isocyanate silane, polyethylene glycol and an organic solvent for 20 minutes, adding water, stirring and mixing for 5 minutes, adding nano-titanium dioxide, stirring and mixing for 20 minutes, filtering and drying to obtain the modified nano-titanium dioxide.

[0049] In the preparation examples of this application, the isocyanate silane is 3-isocyanatepropyltrimethoxysilane;

[0050] The molecular weight of polyethylene glycol is 3000;

[0051] The organic solvent is acetone;

[0052] Nano titanium dioxide is American Trono (Kemeiji) titanium dioxide

[0053] Preparation Example 2-3

[0054] A modified nano-titanium dioxide is different from Preparation Example 1 in that the raw materials and their corresponding weights (kg) are shown in the following table.

[0055] Preparation Example 4

[0056] A modified nano-titanium dioxide is different from that in Preparation Example 1 in that the molecular weight of the polyethylene glycol is 2000.

[0057] Preparation Example 5

[0058] A modified nano-titanium dioxide is different from that in Preparation Example 1 in that the molecular weight of the polyethylene glycol is 4000.

[0059] Performance testing

[0060] The tensile strength, elongation at break and heat deformation temperature of the degradable non-woven fabrics obtained in the examples of the present application and the non-woven fabrics obtained in the comparative examples were tested as follows:

[0061] Tensile strength and elongation at break: refer to GB1040-79 test;

[0062] Heat deformation temperature: Refer to GB / T1634-2004 for testing.

[0063] Example

[0064] Example 1

[0065] A biodegradable non-woven fabric, the components and their corresponding weights (kg) are shown in the following table.

[0066] The method for preparing the above-mentioned degradable non-woven fabric comprises the following steps:

[0067] S1: drying the polylactic acid, polyamide elastomer, nano-titanium dioxide and antioxidant to obtain dried polylactic acid, polyamide elastomer, nano-titanium dioxide and antioxidant;

[0068] S2: After the dried polylactic acid, polyamide elastomer, nano-titanium dioxide and antioxidant are stirred and mixed at 800 r / min for 15 minutes, they are first melt-extruded at 200°C and then spun into fibers, wherein the spinneret aperture is 0.16 mm and the fiber winding speed is 6000 m / min; the fibers are then blown to cool and stretched into a web by air flow, and the air flow drawing speed is controlled to be 6000 m / min; finally, they are rolled and reinforced to obtain a non-woven fabric, wherein the roller speed is 8 m / min, the working pressure is 20 MPa, and the working temperature is 120°C.

[0069] In the embodiment of the present application, polylactic acid, brand PLA LX530, melting point 165°C, melt index 10g / 10min;

[0070] Polyamide elastomer, brand Care ME47, melt volume flow rate of 28cm 3 / 10min, melting temperature is 157℃.

[0071] The nano titanium dioxide is the modified nano titanium dioxide prepared in Preparation Example 1.

[0072] Example 2-3

[0073] A degradable non-woven fabric, which is different from Example 1 in that the components and their corresponding weights (kg) are shown in the following table.

[0074] The tensile strength, elongation at break and heat deformation temperature of the degradable non-woven fabrics obtained in Examples 1-3 of the present application were tested, and the test results are shown in the following table.

[0075] By analyzing the data in the above table, it can be seen that the degradable non-woven fabrics obtained in Examples 1-3 of the present application have a tensile strength of up to 55.0-60 MPa, an elongation at break of up to 149.8-165.0%, and a heat deformation temperature of up to 81.5-88.0°C. This shows that when the degradable non-woven fabric includes 100 parts of polylactic acid, 10-20 parts of polyamide elastomer, and 5-8 parts of nano-titanium dioxide in the total raw materials used to prepare the degradable non-woven fabric of the present application, the resulting degradable non-woven fabric has high strength, toughness, and heat resistance.

[0076] Example 4

[0077] A degradable non-woven fabric, which is different from Example 1 in that the brand of polylactic acid is FY602, the melting point is 165° C., and the melt index is 9 g / 10 min.

[0078] Example 5

[0079] A degradable non-woven fabric, which is different from Example 1 in that the brand of polylactic acid is FY401, the melting point is 175° C., and the melt index is 18 g / 10 min.

[0080] Example 6

[0081] A degradable non-woven fabric, which is different from Example 1 in that the brand of polylactic acid is FY802, the melting point is 165° C., and the melt index is 4 g / 10 min.

[0082] Example 7

[0083] A degradable non-woven fabric, which is different from Example 1 in that the brand of polylactic acid is FY201, the melting point is 175° C., and the melt index is 30 g / 10 min.

[0084] The elongation at break and heat deformation temperature of the degradable non-woven fabrics obtained in Examples 4-7 of the present application were tested, and the test results are shown in the following table.

[0085] By analyzing the data in the above table, it can be seen that the degradable non-woven fabrics obtained in Examples 1, 4, and 5 of the present application have an elongation at break of up to 156.2-163.5% and a heat deformation temperature of up to 84.0-86.5°C.

[0086] Compared with Examples 1, 4, and 5, the elongation at break and heat deformation temperature of Examples 6 and 7 are both lower. This shows that in the total raw materials for preparing the degradable non-woven fabric of the present application, when the melting point of polylactic acid is 165-175°C and the melt index is 9-18g / 10min, the toughness and heat resistance of the degradable non-woven fabric can be improved. In particular, in Example 1, when the melting point of polylactic acid is 165°C and the melt index is 10g / 10min, the elongation at break of the resulting degradable non-woven fabric is as high as 163.5%, and the heat deformation temperature is as high as 86.5°C. Analysis shows that the reason may be that the polylactic acid used in Examples 1, 4, and 5 has both good mechanical properties and processing properties. Therefore, when polylactic acid and polyamide elastomer are melt-blended, the processing performance of the two is high and the compatibility is good, thereby improving the toughness and heat resistance of the non-woven fabrics obtained in Examples 1, 4, and 5.

[0087] Example 8

[0088] A degradable nonwoven fabric, which is different from Example 1 in that the polyamide elastomer is Care ME55, melt volume flow rate of 24cm 3 / 10min, melting temperature is 166℃.

[0089] Example 9

[0090] A degradable nonwoven fabric, which is different from Example 1 in that the polyamide elastomer is Care ME40, melt volume flow rate 38cm 3 / 10min, melting temperature is 151℃.

[0091] The elongation at break and heat deformation temperature of the degradable non-woven fabrics obtained in Examples 8-9 of the present application were tested, and the test results are shown in the following table.

[0092] By analyzing the data in the above table, it can be seen that the degradable non-woven fabrics obtained in Examples 1, 8, and 9 of the present application have an elongation at break of up to 151.1-163.5% and a heat deformation temperature of up to 82.0-86.5°C. This shows that in the total raw materials used to prepare the degradable non-woven fabric of the present application, when the melt volume flow rate of the polyamide elastomer is 24-38 cm3 / 10min and the melting temperature is 151-166°C, the resulting degradable non-woven fabric has both high toughness and heat resistance. At the same time, the degradable non-woven fabric obtained in Example 1 has the highest elongation at break and heat deformation temperature. Analysis shows that the reason for this may be that the polyamide elastomer used in Example 1 has good processing fluidity and mechanical properties. When melt-blended with polylactic acid, it is conducive to the physical entanglement of the soft segments in the polyamide elastomer with the polylactic acid segments, thereby improving the toughness and heat resistance of the non-woven fabric.

[0093] Examples 10-13

[0094] A degradable non-woven fabric, which is different from Example 1 in that the nano titanium dioxide is modified nano titanium dioxide prepared in the preparation example in the following table.

[0095] Example 14

[0096] A degradable non-woven fabric, which is different from Example 1 in that the nano titanium dioxide is American Tenox (Kemeiji) titanium dioxide

[0097] The tensile strength, elongation at break and heat deformation temperature of the degradable non-woven fabrics obtained in Examples 10-14 of the present application were tested, and the test results are shown in the following table.

[0098] By analyzing the data in the above table, it can be seen that the degradable non-woven fabrics obtained in Examples 1, 10, and 11 of the present application have a tensile strength of up to 56.8-58.6 MPa, an elongation at break of up to 158.2-163.5%, and a heat deformation temperature of up to 85.1-86.5°C. This shows that in the total raw materials for preparing the degradable non-woven fabric of the present application, when the weight ratio of nano-titanium dioxide, isocyanate silane, and polyethylene glycol is 1:(0.04-0.06):(0.2-0.4), the resulting degradable non-woven fabric has high strength, toughness, and heat resistance.

[0099] The degradable non-woven fabrics obtained in Examples 1, 12, and 13 of the present application have a tensile strength of up to 57.3-58.6 MPa, an elongation at break of up to 160.2-163.5%, and a heat deformation temperature of up to 85.8-86.5°C. This shows that when the molecular weight of polyethylene glycol in the total raw materials used to prepare the degradable non-woven fabric of the present application is 2000-4000, the resulting degradable non-woven fabric has high strength, toughness, and heat resistance.

[0100] Compared with Examples 1, 10, 11, 12, and 13, the tensile strength, elongation at break, and heat deformation temperature of Example 14 are all reduced. This shows that, in the total raw materials for preparing the degradable non-woven fabric of the present application, surface modification of nano-titanium dioxide using isocyanate silane and polyethylene glycol can improve the strength, toughness, and heat resistance of the degradable non-woven fabric. Analysis shows that the reason may be that the modified nano-titanium dioxide has good compatibility in polylactic acid, which is conducive to improving the crystallinity of polylactic acid, and the polyethylene glycol segment contained on the surface of the modified nano-titanium dioxide contains a large number of ether bonds, which can improve the flexibility of the polylactic acid molecular segment, thereby improving the strength, toughness, and heat resistance of the degradable non-woven fabric obtained in Example 1.

[0101] Comparative Example

[0102] Comparative Example 1

[0103] A non-woven fabric, which differs from Example 1 in that a polyurethane elastomer of equal weight is used instead of the polyamide elastomer, wherein the brand of the polyurethane elastomer is Risheng EMH-95A, the melt flow rate is 30g / 10min, and the melting temperature is 167°C.

[0104] Comparative Example 2

[0105] A non-woven fabric, which is different from Example 1 in that an equal weight of calcium carbonate is used to replace nano titanium dioxide, wherein the model of the calcium carbonate is zg325, which is purchased from Lingshou County Jiashuo Building Materials Processing Co., Ltd.

[0106] The tensile strength, elongation at break and heat deformation temperature of the nonwoven fabrics obtained in Comparative Examples 1-2 of the present application were tested, and the test results are shown in the following table.

[0107] By analyzing the data in the above table, it can be seen that compared with Example 1, the elongation at break of Comparative Example 1 was relatively reduced by 14.3%, and the heat deformation temperature was relatively reduced by 9.6%. Compared with Example 1, the tensile strength of Comparative Example 2 was relatively reduced by 7.5%, the elongation at break was relatively reduced by 11.6%, and the heat deformation temperature was relatively reduced by 9.22%. This shows that the use of polyamide elastomer, nano-titanium dioxide and polylactic acid melt blending in the preparation of the total raw materials of the degradable non-woven fabric of the present application can improve the strength, toughness and heat resistance of the degradable non-woven fabric. The reason for this may be that the soft segments in the polyamide elastomer are strongly physically entangled with the polylactic acid segments, which can absorb part of the deformation energy when damaged by external forces; and the nano-titanium dioxide promotes the heterogeneous nucleation process of polylactic acid, improving the crystallinity of polylactic acid, so the degradable non-woven fabric obtained in Example 1 has higher strength, toughness and heat resistance.

[0108] At the same time, in this application, the degradable non-woven fabrics obtained in Examples 1-14 of this application and the non-woven fabrics obtained in Comparative Examples 1-2 were tested for degradation in accordance with the GB / T 33797-2017 standard. The test results showed that the biodegradable non-woven fabrics obtained in Examples 1-14 and the non-woven fabrics obtained in Comparative Examples 1-2 had a biodegradability percentage in the range of 76-80% at 180 days. This indicates that the degradable non-woven fabrics obtained in Examples 1-14 and the non-woven fabrics obtained in Comparative Examples 1-2 are degradable and environmentally friendly.

[0109] With reference to the relative ultraviolet spectral irradiance (method A) of the 1A type lamp sunlight ultraviolet region in GB / T16422.3, the degradable non-woven fabric obtained in Example 1 of the present application and the non-woven fabric obtained in Comparative Examples 1-2 were irradiated, and then the tensile strength and elongation at break were tested again with reference to GB1040-79. The test results showed that the tensile strength of Example 1 was as high as 58.3 MPa and the elongation at break was as high as 163.4%. The tensile strength of Comparative Example 1 was as low as 56.1 MPa, and the elongation at break was as low as 135.3%. The tensile strength of Comparative Example 2 was as low as 51.3 MPa, and the elongation at break was as low as 139.1%. This shows that the degradable non-woven fabric obtained in Example 1 of the present application has good aging resistance.

[0110] 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 non-creative modifications to the present embodiment as needed, but as long as they are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. A degradable non-woven fabric, characterized in that, Comprising the following components in parts by weight: 100 parts of polylactic acid; 10 - 20 parts of polyamide elastomer; 5 - 8 parts of nano-titanium dioxide.

2. The degradable non-woven fabric according to claim 1, wherein The melting point of the polylactic acid is 165 - 175 °C, and the melt index is 9 - 18 g / 10 min.

3. The degradable non-woven fabric according to claim 2, wherein The melting point of the polylactic acid is 165 °C, and the melt index is 10 g / 10 min.

4. The degradable non-woven fabric according to claim 1, wherein The melt volume flow rate of the polyamide elastomer is 24 - 38 cm 3 / 10 min, and the melting temperature is 151 - 166 °C.

5. The degradable non-woven fabric according to claim 4, characterized in that The polyamide elastomer is Care ME55, Care ME40, and one or more of Care ME47.

6. The degradable non-woven fabric according to claim 1, wherein, The nano-titanium dioxide is modified nano-titanium dioxide, and its preparation method is: After stirring and mixing isocyanate group silane, polyethylene glycol and solvent, first add water, stir and mix, then add nano-titanium dioxide, stir and mix, filter, and dry to obtain modified nano-titanium dioxide.

7. The degradable non-woven fabric according to claim 6, wherein The weight ratio of the nano-titanium dioxide, isocyanate group silane and polyethylene glycol is 1:(0.04 - 0.06):(0.2 - 0.4).

8. The degradable non-woven fabric according to claim 6, characterized in that, The molecular weight of the polyethylene glycol is 2000 - 4000.

9. The preparation method of the degradable non-woven fabric according to any one of claims 1-8, characterized in that, Including the following steps: S1: After drying the polylactic acid, polyamide elastomer, nano-titanium dioxide and antioxidant, obtain the dried polylactic acid, polyamide elastomer, nano-titanium dioxide and antioxidant; S2: After stirring and mixing the dried polylactic acid, polyamide elastomer, nano-titanium dioxide and antioxidant, first melt-extrude, then spin into fibers, and finally cool and stretch into a net and roll to obtain non-woven fabric.

10. Use of the degradable non-woven fabric according to any one of claims 1 - 8 in the preparation of sports goods and sportswear.

Images