Light and thin mesh anti-ultraviolet fabric

Abstract

The application relates to the technical field of fabric preparation, and particularly discloses a light and thin mesh anti-ultraviolet fabric and a preparation method thereof. The light and thin mesh anti-ultraviolet fabric is formed by interweaving cool yarn and modified fine denier polyester and has a small mesh structure. The modified fine denier polyester is coated with a coating layer on the surface. The coating layer is formed by coating a coating material on the surface of the fine denier polyester. The coating material is mainly made of the following raw materials: an anti-ultraviolet agent, a binder and a solvent. The anti-ultraviolet agent is at least two of fumed silica, nano titanium dioxide and lanthanum chloride. The preparation method comprises the following steps: mixing the anti-ultraviolet agent, the binder and the solvent to obtain a coating liquid; coating the coating liquid on the surface of the fine denier polyester, drying and forming a coating layer to obtain modified fine denier polyester; interweaving the cool yarn and the modified fine denier polyester to form a small mesh structure, and the light and thin mesh anti-ultraviolet fabric is obtained. The light and thin mesh anti-ultraviolet fabric prepared by the application has good anti-ultraviolet performance and air permeability.

Description

Technical Field

[0001] This application relates to the field of fabric preparation technology, and more specifically, it relates to a lightweight mesh UV-resistant fabric and its preparation method. Background Technology

[0002] Ultraviolet (UV) radiation can be divided into three bands based on wavelength: UVC (180-280nm), UVB (280-315nm), and UVA (315-400nm). It is generally believed that the most harmful UVC is almost completely absorbed by the ozone layer and cannot reach the Earth's surface. While UVB is absorbed by the ozone layer, a significant portion still reaches the Earth's surface, and UVA reaches the Earth's surface in the largest quantities. Moderate exposure to UV radiation is beneficial to human health; however, excessive exposure to UVB can cause erythema and burns, while UVA can activate melanin in the skin, leading to pigmentation and the formation of dark spots.

[0003] To reduce the harmful effects of ultraviolet (UV) radiation on the human body, UV-resistant fabrics have emerged. Currently, the market prospects for textiles with UV protection are very broad, and the variety of UV-resistant fabrics is increasingly diverse, including swimwear, tennis shirts, golf apparel, and windbreakers. In addition, there are military textiles such as field combat uniforms and tents; and other products such as curtains, advertising fabrics, and tarpaulins.

[0004] Currently, UV-resistant fabrics have extremely low porosity, which may result in poor breathability and reduce the comfort of using the fabric. Summary of the Invention

[0005] In order to improve the UV protection performance of the fabric while enhancing its breathability, this application provides a lightweight mesh UV-resistant fabric and its preparation method.

[0006] In a first aspect, this application provides a lightweight mesh UV-resistant fabric, employing the following technical solution:

[0007] A lightweight mesh UV-resistant fabric is formed by interweaving cooling yarn and modified fine denier polyester and having a small mesh structure. The modified fine denier polyester has a coating layer on its surface. The coating layer is formed by coating material applied to the surface of the fine denier polyester. The coating material is mainly made of the following raw materials in parts by weight: 4-8 parts of UV-resistant agent, 2-3 parts of adhesive, and 2-3 parts of solvent. The UV-resistant agent is at least two of fumed silica, nano titanium dioxide, and lanthanum chloride.

[0008] By adopting the above technical solution, this application uses a cool-feeling yarn and modified fine denier polyester interwoven to form a small mesh structure. The fine denier polyester has a finer fineness and better porosity, which helps to improve the fabric's coverage and reduce its porosity, thereby reducing ultraviolet transmittance. At the same time, the fiber structure of fine denier polyester has a better effect on the refraction and reflection of ultraviolet rays. The small mesh structure of the fabric increases the crimp height of the yarn, and the number of reflections and refractions of light between the layered fibers increases, resulting in more light being absorbed by the fibers and weaker light passing through the fabric. Therefore, the fabric's UV resistance is improved, and the small mesh structure also improves the fabric's breathability. In addition, to further improve the fabric's UV resistance, a coating layer is applied to the surface of the fine denier polyester. The coating material in the coating layer contains an anti-ultraviolet agent, which facilitates the imparting of strong UV resistance to the yarn. The small mesh structure and the coated yarn work together to further improve the fabric's UV resistance.

[0009] Preferably, the UV stabilizer is composed of fumed silica, nano-titanium dioxide, and lanthanum chloride in a mass ratio of (4-5):(6-8):(1-2).

[0010] By adopting the above technical solution, the UV absorber is obtained by compounding three components: fumed silica, nano-titanium dioxide, and lanthanum chloride. The ratio of the three components is adjusted to achieve the optimal ratio. Fumed silica has a strong reflective effect on ultraviolet rays and also has a certain anti-settling effect, which may reduce the sedimentation of nano-titanium dioxide and lanthanum chloride in the coating solution. Nano-titanium dioxide is a stable, non-toxic, and odorless ultraviolet absorber with the lowest ultraviolet transmittance in the wavelength range of 280-350nm. When the absorbable energy is higher than or equal to its band gap of 3.0eV, an electron-hole pair is generated. It can recombine with other electrons and holes to undergo redox reactions, thus playing a role in ultraviolet shielding; nano-titanium dioxide achieves its effect through the absorption and scattering of ultraviolet light, and has a shielding effect on both UVA and UVB ultraviolet rays; lanthanum chloride and fumed silica work together to further increase the reflectivity and absorption rate of ultraviolet rays and reduce the transmittance of ultraviolet rays. At the same time, the addition of lanthanum chloride may promote the absorption of ultraviolet rays by nano-titanium dioxide, thereby increasing its strong absorption of ultraviolet rays. The combination of these three components endows the coating layer with the function of absorbing and reflecting ultraviolet rays, thereby improving the ultraviolet resistance of fine denier polyester and improving the fabric's UV resistance and breathability.

[0011] Preferably, the particle size ratio of the fumed silica, nano titanium dioxide, and lanthanum chloride is (7-8):(3-4):(1-2).

[0012] By adopting the above technical solution, the particle size of the three components of the UV-resistant agent is adjusted, which facilitates the formation of an uneven structure on the surface of fine denier polyester. The largest particle size of fumed silica comes into contact with ultraviolet light first, which facilitates the reflection of ultraviolet light and reduces the amount of ultraviolet light transmitted to the fine denier polyester. Subsequently, the next smaller particle size of nano-titanium dioxide is distributed around the fumed silica, which facilitates the absorption of ultraviolet light that is not reflected. Lanthanum chloride fills the pores between adjacent nano-titanium dioxide, adjacent fumed silica, and nano-titanium dioxide and fumed silica, which further improves the density of the coating layer and improves the shielding rate of ultraviolet light.

[0013] Preferably, the nano-titanium dioxide is modified nano-titanium dioxide. The preparation method of modified nano-titanium dioxide includes the following steps: placing nano-zinc phosphate in an acrylic emulsion to obtain pretreated nano-magnesium oxide; mixing nano-titanium dioxide, nano-magnesium oxide and pretreated nano-zinc phosphate; and drying to obtain modified nano-titanium dioxide.

[0014] Preferably, the nano-titanium dioxide is rutile.

[0015] By adopting the above technical solution, placing nano-zinc phosphate in an acrylic emulsion facilitates the formation of an adhesion layer on the outer layer of the nano-zinc phosphate. This allows the nano-titanium dioxide and nano-magnesium oxide composite materials to adhere to the surface of the nano-magnesium oxide, forming a core-shell structure with the nano-titanium dioxide and nano-magnesium oxide composite materials as the shell and the nano-zinc phosphate as the core. Some ultraviolet rays may be absorbed by the nano-titanium dioxide, while some ultraviolet rays may pass through the gaps in the nano-titanium dioxide and be reflected by the nano-zinc phosphate back to the nano-titanium dioxide and nano-magnesium oxide for absorption. Alternatively, they may be reflected out through the pores formed by the nano-titanium dioxide, thereby further improving the UV resistance of the coating layer.

[0016] Preferably, the adhesive is composed of fumed silica, chitosan, and guar gum in a mass ratio of (1-2):(1-2):(3-5).

[0017] By adopting the above technical solution, adding fumed silica to guar gum may form a silica structure. The network structure formed by the small particles of fumed silica facilitates the acceleration of guar gum curing speed and improves the viscosity of guar gum. At the same time, it further increases the content of UV stabilizer in the coating layer. Guar gum is natural, non-toxic, and highly biocompatible. Chitosan has high strength and good film-forming properties. When mixed with guar gum, it is easy to further improve the bonding performance of guar gum.

[0018] Preferably, the guar gum is modified guar gum, and the preparation method of the modified guar gum includes the following steps: mixing guar gum with water to obtain a guar gum solution, mixing the guar gum solution with nano-cerium oxide, stirring evenly, evaporating and pulverizing to obtain the final product.

[0019] By adopting the above technical solution, guar gum solution is mixed with nano-cerium oxide, which facilitates the encapsulation of nano-cerium oxide within the guar gum, forming a core-shell structure with guar gum as the shell and nano-cerium oxide as the core. Nano-cerium oxide is a rare earth nanomaterial with good catalytic, oxygen storage, and ultraviolet shielding capabilities. It has a unique 4f electronic structure and is very sensitive to light absorption, especially to ultraviolet light. Moreover, the absorbed ultraviolet light is mainly used for electronic energy level transitions and will not trigger photocatalysis. This facilitates the attribution of certain UV resistance properties to guar gum, thereby increasing the content of UV-resistant substances in the coating layer and improving the UV resistance of the coating layer. This helps to improve the UV resistance of the fabric without affecting its breathability.

[0020] Preferably, the thickness of the coating layer is 0.5-1 μm.

[0021] By adopting the above technical solution, when the coating layer is too thin, the UV protection effect is not good. When the coating layer is too thick, the diameter of the fine denier polyester may be too large, which may affect the breathability of the fabric and result in a poor wearing experience when the fabric is made into clothing.

[0022] Preferably, the fine denier polyester is washed before coating.

[0023] By adopting the above technical solution, fine denier polyester is cleaned to remove impurities and oil stains from the polyester surface, thereby improving the coating strength between the packaging material and the fine denier polyester, and further improving the UV resistance of the resulting fabric.

[0024] Preferably, the fine denier polyester is pretreated fine denier polyester, which has undergone roughening treatment.

[0025] Preferably, the pretreated fine denier polyester is fine denier polyester that has undergone acid treatment.

[0026] Preferably, the roughening treatment of the fine denier polyester includes the following steps: placing the fine denier polyester in an acidic solution for corrosion treatment for 10-15 seconds, the acidic solution being a sulfuric acid solution with a volume concentration of 0.5-1.5 mol / L.

[0027] By adopting the above technical solution, the surface of fine denier polyester becomes rougher and the contact interface becomes larger after roughening treatment. When in contact with the coating liquid, the interfacial attraction is higher, which facilitates the interaction with the adhesive. This further improves the adhesion strength of the UV stabilizer on the surface of the fine denier fiber and further improves the UV resistance of the coating layer, thereby improving the UV resistance of the fabric made from the fine denier polyester.

[0028] Secondly, this application provides a method for preparing a lightweight mesh UV-resistant fabric, using the following technical solution:

[0029] A method for preparing a lightweight mesh UV-resistant fabric includes the following steps:

[0030] (1) Preparation of coating solution: Mix the UV stabilizer, adhesive and solvent to obtain the coating solution;

[0031] (2) Preparation of modified yarn: The coating liquid is coated on the surface of fine denier polyester, dried to form a coating layer, and modified fine denier polyester is obtained.

[0032] (3) Fabric preparation: Cooling yarn and modified fine denier polyester obtained in step (2) are interwoven to form a small mesh structure, thus obtaining the fabric.

[0033] Preferably, step (3) is woven on a single-sided loom.

[0034] By adopting the above technical solution, this application forms a small mesh structure by mixing cool-feeling yarn with fine denier polyester. The small mesh structure reduces the transmittance of ultraviolet rays. At the same time, a coating layer is attached to the surface of the fine denier polyester. The coating layer has good anti-ultraviolet properties, so it is easy to improve the anti-ultraviolet properties of the fabric without affecting the breathability of the fabric. Moreover, the fabric preparation method is simple.

[0035] In summary, this application has the following beneficial effects:

[0036] 1. The lightweight mesh UV-resistant fabric of this application is formed by interweaving cooling yarn and fine denier polyester and has a small mesh structure, which improves the porosity of the fabric, enhances the refraction and reflection of ultraviolet rays transmitted to the fabric, reduces the transmittance of ultraviolet rays on the fabric, and thus improves the UV resistance of the fabric.

[0037] 2. The lightweight mesh UV-resistant fabric of this application uses modified fine denier polyester. A coating material is applied to the fine denier polyester to form a coating layer. The coating material contains UV stabilizers and adhesives. The adhesives adhere the UV stabilizers to the fine denier polyester, thereby improving the UV resistance of the fine denier polyester. This improves the UV resistance of the fabric without affecting its breathability. Detailed Implementation

[0038] The present application will be further described in detail below with reference to the embodiments.

[0039] The fabric of this application is woven in a triangular arrangement, wherein the needle row is 12131214, the yarn in ① is fine denier polyester, and the yarns in ②-⑥ are any one of cooling yarn or a blend of cooling yarn and spandex. The cooling yarn is commercially available or 75D / 72F Brrr yarn, and the fine denier polyester is 30D / 24F yarn.

[0040] Preparation example of modified fine denier polyester

[0041] Preparation Example 1: A modified fine denier polyester, wherein the surface of the fine denier polyester is coated with a coating layer with a thickness of 1 μm. The coating layer is formed by coating material applied to the surface of the fine denier polyester. The coating material is made from the following raw materials by weight: 4 kg of UV stabilizer, 2 kg of binder, and 2 kg of solvent. The solvent is water. The binder is composed of fumed silica, chitosan, and guar gum in a mass ratio of 2:2:5. The UV stabilizer is composed of fumed silica and nano-titanium dioxide in a mass ratio of 1:1. The particle size ratio of fumed silica to nano-titanium dioxide is 1:1.

[0042] Preparation Example 2: A modified fine denier polyester, which differs from Preparation Example 1 in that the coating material is made from the following raw materials by weight: 8 kg of UV stabilizer, 3 kg of adhesive, and 3 kg of solvent.

[0043] Preparation Example 3: A modified fine denier polyester, which differs from Preparation Example 2 in that: the UV stabilizer is composed of fumed silica, nano titanium dioxide, and lanthanum chloride in a mass ratio of 4:6:1, and the particle size ratio of fumed silica, nano titanium dioxide, and lanthanum chloride is 1:1:1.

[0044] Preparation Example 4: A modified fine denier polyester, which differs from Preparation Example 2 in that: the UV stabilizer is composed of fumed silica, nano titanium dioxide, and lanthanum chloride in a mass ratio of 5:8:2, and the particle size ratio of fumed silica, nano titanium dioxide, and lanthanum chloride is 1:1:1.

[0045] Preparation Example 5: A modified fine denier polyester, which differs from Preparation Example 4 in that the particle size ratio of fumed silica, nano titanium dioxide, and lanthanum chloride is 7:3:1.

[0046] Preparation Example 6: A modified fine denier polyester, which differs from Preparation Example 4 in that the particle size ratio of fumed silica, nano titanium dioxide, and lanthanum chloride is 1:3:7.

[0047] Preparation Example 7: A modified fine denier polyester, differing from Preparation Example 5 in that the nano-titanium dioxide is modified nano-titanium dioxide. The preparation method of the modified nano-titanium dioxide includes the following steps: immersing nano-zinc phosphate in an acrylic emulsion to obtain pretreated nano-magnesium oxide; mixing nano-titanium dioxide, nano-magnesium oxide, and pretreated nano-zinc phosphate; and drying to obtain modified nano-titanium dioxide. The mass ratio of nano-titanium dioxide, nano-magnesium oxide, and pretreated nano-zinc phosphate is 10:8:3. The particle size ratio of nano-titanium dioxide, nano-magnesium oxide, and nano-zinc phosphate is 3:1:7.

[0048] Preparation Example 8: A modified fine denier polyester, which differs from Preparation Example 7 in that the guar gum is modified guar gum. The preparation method of the modified guar gum includes the following steps: mixing guar gum and water at a mass ratio of 2:1 to obtain a guar gum solution, mixing the guar gum solution with nano-cerium oxide at a mass ratio of 3:1, stirring evenly, evaporating, and pulverizing to obtain the final product.

[0049] Preparation Example 9: A modified fine denier polyester, which differs from Preparation Example 8 in that the fine denier polyester is cleaned before coating.

[0050] Preparation Example 10: A modified fine denier polyester, differing from Preparation Example 9 in that the fine denier polyester is first roughened and then cleaned before coating. The roughening treatment includes the following steps: placing the fine denier polyester in an acidic solution for etching for 13 seconds, the acidic solution being a sulfuric acid solution with a molar concentration of 1 mol / L.

[0051] Preparation Example 11: A modified fine denier polyester, which differs from Preparation Example 1 in that no adhesive is added to the coating material.

[0052] Preparation Example 12: A modified fine denier polyester, which differs from Preparation Example 1 in that the UV stabilizer in the coating is fumed silica.

[0053] Example

[0054] Example 1: A lightweight mesh UV-resistant fabric, formed by interweaving cooling yarn and modified fine denier polyester and having a small mesh structure, wherein the modified fine denier polyester was prepared in Preparation Example 1, as shown in Table 1.

[0055] The preparation method of the above-mentioned lightweight mesh UV-resistant fabric includes the following steps:

[0056] (1) Preparation of coating solution: Mix the UV stabilizer, adhesive and solvent to obtain the coating solution;

[0057] (2) Preparation of modified yarn: The coating liquid is coated on the surface of fine denier polyester, dried to form a coating layer, and modified fine denier polyester is obtained.

[0058] (3) Fabric preparation: Cooling yarn and modified fine denier polyester obtained in step (2) are interwoven to form a small mesh structure, thus obtaining the fabric.

[0059] Table 1. Examples of preparation of modified fine denier polyester for a lightweight mesh UV-resistant fabric.

[0060] Serial Number Modified fine denier polyester Example 1 Preparation Example 1 Example 2 Preparation Example 2 Example 3 Preparation Example 3 Example 4 Preparation Example 4 Example 5 Preparation Example 5 Example 6 Preparation Example 6 Example 7 Preparation Example 7 Example 8 Preparation Example 8 Example 9 Preparation Example 9 Example 10 Preparation Example 10

[0061] Examples 2-10: A lightweight mesh UV-resistant fabric, which differs from Example 1 in that it uses modified fine denier polyester prepared using different preparation methods.

[0062] Comparative Example

[0063] Comparative Example 1: A lightweight mesh UV-resistant fabric, formed by interweaving cool-feeling yarns and fine denier polyester and having a small mesh structure.

[0064] The above-mentioned method for preparing lightweight mesh UV-resistant fabric includes the following steps: interweaving cooling yarn and fine denier polyester to form a small mesh structure, thus obtaining the fabric.

[0065] Comparative Example 2: A lightweight mesh UV-resistant fabric, which differs from Example 1 in that the modified fine denier polyester was prepared using Preparation Example 11.

[0066] Comparative Example 3: A lightweight mesh UV-resistant fabric, which differs from Example 1 in that the modified fine denier polyester was prepared using Preparation Example 12.

[0067] Performance testing

[0068] UV protection performance test: The lightweight mesh UV-resistant fabrics prepared in Examples 1-10 and Comparative Examples 1-3 were tested for UV protection performance according to the test methods in GB / T18830-2009 "Evaluation of UV Protection Performance of Textiles". The test results are shown in Table 2.

[0069] Breathability test: The lightweight mesh UV-resistant fabrics prepared in Examples 1-10 and Comparative Examples 1-3 were tested for breathability according to the test methods in GB / T5453-1997 "Textiles - Determination of air permeability of fabrics". The test results are shown in Table 2.

[0070] Table 2 Performance of the lightweight mesh UV-resistant fabrics of Examples 1-10 and Comparative Examples 1-4

[0071] Serial Number UPF air permeability (mm / s) Example 1 62.1 302 Example 2 63.3 303 Example 3 65.2 301 Example 4 65.7 302 Example 5 68.5 306 Example 6 66.1 305 Example 7 69.1 307 Example 8 70.2 306 Example 9 70.8 306 Example 10 71.4 305 Comparative Example 1 45.2 304 Comparative Example 2 52.1 303 Comparative Example 3 53.4 302

[0072] Based on Examples 1-2 and the data in Table 2, it can be seen that the lightweight mesh UV-resistant fabric prepared in this application has excellent UV resistance and breathability. Therefore, the inventors of this application speculate that the combination of small mesh structure and UV-resistant yarn may have a significant impact on the UV resistance and breathability of the fabric.

[0073] Based on Examples 2-4 and the data in Table 2, it can be seen that the lightweight mesh UV-resistant fabrics prepared in Examples 3-4 have excellent UV resistance and breathability, and their UV resistance is superior to that of Example 2. The difference between Examples 3-4 and Example 2 is that the UV-resistant agent in Examples 3-4 is obtained by compounding fumed silica, nano titanium dioxide, and lanthanum chloride. The inventors of this application speculate that the UV-resistant agent is compounded from multiple components, and the synergistic effect of these components makes it easier to improve the UV resistance of the fabric without affecting breathability.

[0074] Based on Examples 4-6 and the data in Table 2, it can be seen that the UV resistance of the fabric prepared in Example 5 is better than that of the fabric prepared in Example 6, and is much higher than the UPF value of the fabric prepared in Example 4. The UV resistance of the fabric prepared in Example 6 is better than that of the fabric prepared in Example 4. The difference between Examples 5-6 and Example 4 is that the particle size ratio of the three components, fumed silica, nano titanium dioxide, and lanthanum chloride, is different. The inventors of this application believe that the particle size ratio of fumed silica, nano titanium dioxide, and lanthanum chloride has a significant impact on the UV resistance of the fabric. The particle sizes of fumed silica, nano titanium dioxide, and lanthanum chloride in Example 6 and Example 5 are significantly different, resulting in an uneven coating layer that facilitates better absorption and reflection of ultraviolet rays. When the particle size ratio of fumed silica, nano titanium dioxide, and lanthanum chloride is the same as in Example 6, the shielding performance against ultraviolet rays is even better.

[0075] Based on Examples 6-7 and the data in Table 2, it can be seen that the UPF value of the fabric prepared in Example 7 is greater than that of the fabric prepared in Example 6, and it has better breathability. The difference between Example 7 and Example 6 is that the nano titanium dioxide in Example 7 is modified titanium dioxide. The inventors of this application speculate that after the nano titanium dioxide is modified, it is coated with nano magnesium oxide and then coated with nano zinc phosphate to further improve the UV resistance of the fabric.

[0076] Based on Examples 7-8 and the data in Table 2, it can be seen that the UPF value of the fabric prepared in Example 8 is greater than that of the fabric prepared in Example 7, and it has better breathability. The difference between Example 8 and Example 7 is that the guar gum in the adhesive is modified. The inventors of this application speculate that adding nano-cerium oxide to guar gum can give guar gum a certain UV resistance, so that guar gum has both adhesive properties and UV resistance, in order to further improve the UV resistance of the fabric.

[0077] Based on Examples 8-10 and the data in Table 2, it can be seen that when fine denier polyester is coated with the coating liquid, it is treated to improve the adhesion of the coating liquid to the surface of the fine denier polyester, further improve the UV resistance of the fine denier polyester, and thus improve the UV resistance of the fabric.

[0078] Based on Example 1, Comparative Example 1, and the data in Table 2, it can be seen that the UPF value of the fabric prepared in Example 1 is much greater than that of the fabric prepared in Comparative Example 1. This may be because the combination of the small mesh structure and the fabric woven with yarns that have anti-UV properties has a greater impact on the fabric's UV resistance.

[0079] Based on Examples 1 and Comparative Examples 2-3, and the data in Table 2, it can be seen that the raw materials of the coating liquid have a significant impact on the UV resistance of fine denier polyester and the UV resistance of the fabric.

[0080] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A lightweight mesh UV-resistant fabric, characterized in that, It is formed by interweaving cool-feeling yarn and modified fine denier polyester and has a small mesh structure. The modified fine denier polyester is a fine denier polyester with a coating layer on its surface. The coating layer is formed by coating material applied to the surface of fine denier polyester. The coating material is made of the following raw materials in parts by weight: 4-8 parts of UV stabilizer, 2-3 parts of adhesive, and 2-3 parts of solvent. The UV stabilizer is composed of fumed silica, nano-titanium dioxide, and lanthanum chloride in a mass ratio of (4-5):(6-8):(1-2); the particle size ratio of the fumed silica, nano-titanium dioxide, and lanthanum chloride is (7-8):(3-4):(1-2); the nano-titanium dioxide is modified nano-titanium dioxide, and the preparation method of the modified nano-titanium dioxide includes the following steps: placing nano-zinc phosphate in an acrylic emulsion to obtain pretreated nano-zinc phosphate; mixing nano-titanium dioxide, nano-magnesium oxide, and the pretreated nano-zinc phosphate; and drying to obtain modified nano-titanium dioxide. The adhesive is composed of fumed silica, chitosan, and guar gum in a mass ratio of (1-2):(1-2):(3-5); the guar gum is modified guar gum, and the preparation method of the modified guar gum includes the following steps: mixing guar gum with water to obtain a guar gum solution, mixing the guar gum solution with nano-cerium oxide, stirring evenly, evaporating, and pulverizing to obtain the final product.

2. The lightweight mesh UV-resistant fabric according to claim 1, characterized in that: The thickness of the coating layer is 0.5-1 μm.

3. The lightweight mesh UV-resistant fabric according to claim 1, characterized in that: The fine denier polyester was cleaned before coating.

4. The lightweight mesh UV-resistant fabric according to claim 3, characterized in that: The fine denier polyester is pretreated fine denier polyester, which has undergone roughening treatment.

5. A method for preparing a lightweight mesh UV-resistant fabric as described in any one of claims 1-4, characterized in that: Includes the following steps, (1) Preparation of coating solution: Mix the UV stabilizer, adhesive and solvent to obtain the coating solution; (2) Preparation of modified yarn: The coating solution is coated on the surface of fine denier polyester, dried to form a coating layer, and modified fine denier polyester is obtained; (3) Fabric preparation: Cooling yarn and modified fine denier polyester obtained in step (2) are interwoven to form a small mesh structure, which is then obtained.