Waterproof, antifouling and oil-proof fabric and preparation method thereof

Abstract

The present application relates to the technical field of textile fabrics, and in particular to a waterproof, antifouling, and oil-proof fabric and a preparation method thereof. A waterproof, antifouling, and oil-proof fabric comprises a fabric substrate and a finishing layer covering the surface of the fabric substrate, wherein the finishing layer is formed by finishing and coating with a finishing agent, and the finishing agent comprises the following substances in parts by weight: 45 to 60 parts of fluorosilicone copolymer emulsion; 6 to 15 parts of deionized water; 0.5 to 1.5 parts of graphene oxide. The present application selects fluorosilicone copolymer emulsion as the main modified material, because the Si-OH in the siloxane material in the fluorosilicone copolymer emulsion can react with the hydroxyl-OH of the fabric fiber to form a covalent bond, thereby forming an effective coating on the surface of the fabric, improving the structural properties of the fabric, and improving the three-proof properties of the fabric.

Description

Technical Field

[0001] The present application relates to the technical field of textile fabrics, and in particular to a waterproof, anti-fouling and oil-proof fabric and a preparation method thereof. Background Art

[0002] Waterproof, oil-proof and stain-proof properties are commonly known as "three protections" or "three rejections". The fabric has the ability to resist water wetting, resist oily liquids, and after being contaminated, it is easy to remove dirt by ordinary washing or wiping methods.

[0003] The water and oil repellency of fabrics is achieved by changing the surface properties of fibers and reducing the surface tension of fabrics. The lower the surface tension, the better the protective performance. The ability to remove stains easily after washing is achieved by giving the fiber surface tension adjustable properties, so that the fiber exhibits lower surface tension in the air. During the washing process, the hydrophilic groups on the fiber surface migrate, increasing the surface tension, expelling oily stains between fibers and improving the ability to easily clean stains on the fiber surface. The ability to easily remove stains by wiping is similar to the water and oil repellency. Fabrics with lower surface tension usually have better stain-wiping properties.

[0004] In view of the above-mentioned prior art, the inventors found that the existing three-proof fabrics have poor protective effects and are difficult to remove oil stains and dirt that are difficult to remove. Summary of the invention

[0005] In order to improve the three-proof effects of existing fabrics, the present application provides a waterproof, anti-fouling and oil-proof fabric and a preparation method thereof.

[0006] In the first aspect, the present application provides a waterproof, anti-fouling and oil-proof fabric, which adopts the following technical solution: a waterproof, anti-fouling and oil-proof fabric, characterized in that it includes a fabric substrate and a finishing layer covering the surface of the fabric substrate, the finishing layer is formed by finishing and coating with a finishing agent, and the finishing agent includes the following substances in parts by weight:

[0007] 45-60 parts of fluorosilicone copolymer emulsion;

[0008] 6-15 parts of deionized water;

[0009] 0.5 to 1.5 parts of graphene oxide.

[0010] By adopting the above-mentioned technical scheme, the present application selects fluorosilicone copolymer emulsion as the main modified material. Since the Si-OH in the siloxane material in the fluorosilicone copolymer emulsion can react with the hydroxyl -OH of the fabric fiber to form a covalent bond, an effective coating is formed on the surface of the fabric, thereby improving the structural properties of the fabric and enhancing the three-proof properties of the fabric.

[0011] Preferably, the fluorosilicone copolymer emulsion is prepared by the following scheme:

[0012] Mixing deionized water and an emulsifier, collecting the emulsifier aqueous solution, adding lauryl methacrylate and methyl methacrylate to the emulsifier aqueous solution, stirring and mixing, and obtaining a mixed solution;

[0013] A coupling agent, dodecafluoroheptyl methacrylate and an initiator are added to the mixed solution, and the mixed solution is heated in a water bath after shearing and emulsification, and the mixture is kept warm for reaction to prepare the fluorosilicone copolymer emulsion.

[0014] By adopting the above-mentioned technical scheme, the fluorosilicone copolymer emulsion prepared in the present application forms an effective coating on the surface of the fabric fiber, thereby reducing the surface energy of the fabric surface, making it difficult for water droplets or oil stains to spread on the fabric surface, improving the fabric's anti-fouling performance, and thus improving the fabric's three-proof performance.

[0015] Preferably, the heat preservation reaction comprises first taking 1 / 3 of the mass of the emulsion after shear emulsification and stirring, then dropping the remaining mass of the emulsion after shear emulsification, and heat-preserving the reaction at 75-80° C. for 2-3 hours.

[0016] By adopting the above-mentioned technical scheme, the present application optimizes the scheme of the heat preservation reaction, and further improves the binding performance between the components in the heat preservation reaction through the technical scheme of dripping treatment, thereby improving the three-proof performance of the fabric prepared by the present application.

[0017] Preferably, the graphene oxide is modified graphene oxide, and the modified graphene oxide is prepared by the following scheme:

[0018] Taking graphene oxide and placing it in deionized water, ultrasonically dispersing it, and collecting the dispersion;

[0019] The coupling agent is dispersed in anhydrous ethanol, stirred and mixed, and added dropwise to the dispersion, heated in a water bath for reaction, filtered and the filter cake is collected, and vacuum dried to prepare the modified graphene oxide.

[0020] By adopting the above-mentioned technical scheme, the present application fills the modified graphene material on the surface of the fabric, and the graphene oxide material is effectively added. On the one hand, the graphene oxide can effectively improve the fabric's resistance to ultraviolet aging, thereby improving the durability of the fabric's three-proof performance; secondly, the technical scheme of the present application improves the water-repellent performance of the fluorosilicone copolymer emulsion that is reduced due to the capillary effect on the fabric surface when the fluorosilicone copolymer emulsion is coated on the fabric surface through the effective loading of graphene oxide, and the modified graphene oxide and the fabric are effectively connected through the fluorosilicone copolymer emulsion, thereby improving the durability of the fabric's three-proof performance.

[0021] Preferably, the finishing agent further comprises 6 to 12 parts by weight of glycerol triglycidyl ether.

[0022] By adopting the above technical scheme, the present application further optimizes the components of the finishing agent, and selects the addition of propylene glycol triglycidyl ether to improve the bonding strength between the finishing agent and the fabric matrix. Since propylene glycol triglycidyl ether contains 3 epoxy groups, it can react with the hydroxyl groups on the fabric fibers to generate hydroxyl groups and ether bonds. The generated hydroxyl groups and epoxy groups continue to react to generate ether bonds and hydroxyl groups, thus producing a cross-linking reaction, which can improve the water wash resistance, thereby improving the durability of the three-proof fabric.

[0023] In a second aspect, the present application provides a method for preparing a waterproof, anti-fouling and oil-proof fabric, comprising the following preparation steps:

[0024] S1, take the finishing liquid and dilute it with water, collect the working liquid, immerse the fabric in the working liquid, and then use a roller to remove the excess working liquid;

[0025] S2, taking the fabric and placing it in a setting machine, after setting treatment, drying and then baking treatment, calendering can complete the preparation of waterproof, anti-fouling and oil-proof fabric.

[0026] By adopting the above technical scheme, the present application further optimizes the preparation method of waterproof, anti-fouling and oil-proof fabrics, reduces the difficulty of the preparation process, and improves the three-proof properties of waterproof, anti-fouling and oil-proof fabrics.

[0027] In summary, this application has the following beneficial effects:

[0028] First, the present application selects fluorosilicone copolymer emulsion as the main modified material. Since the Si-OH in the siloxane material in the fluorosilicone copolymer emulsion can react with the hydroxyl -OH of the fabric fiber to form a covalent bond, an effective coating is formed on the surface of the fabric, thereby improving the structural properties of the fabric and enhancing the three-proof properties of the fabric.

[0029] Second, the present application fills the modified graphene material on the surface of the fabric, and the effective addition of graphene oxide material, on the one hand, graphene oxide can effectively improve the fabric's resistance to ultraviolet aging, thereby improving the durability of the fabric's three-proof performance; secondly, the technical solution of the present application improves the water-repellent performance of the fluorosilicone copolymer emulsion when it is coated on the fabric surface due to the capillary effect of the fabric surface through the effective loading of graphene oxide, and the modified graphene oxide and the fabric form an effective connection through the fluorosilicone copolymer emulsion, thereby improving the durability of the fabric's three-proof performance.

[0030] Third, the present application further optimizes the components of the finishing agent, and selects the addition of propylene glycol triglycidyl ether to improve the bonding strength between the finishing agent and the fabric matrix. Since propylene glycol triglycidyl ether contains 3 epoxy groups, it can react with the hydroxyl groups on the fabric fibers to generate hydroxyl groups and ether bonds. The generated hydroxyl groups and epoxy groups continue to react to generate ether bonds and hydroxyl groups, thus producing a cross-linking reaction, which can improve the water wash resistance, thereby improving the durability of the three-proof fabric. DETAILED DESCRIPTION

[0031] The present application is further described in detail below with reference to the embodiments.

[0032] Preparation Example 1: Fluorosilicone copolymer emulsion 1:

[0033] Mix 200 mL of deionized water with 2 g of emulsifier DNS-86, collect the emulsifier aqueous solution, add 20 g of lauryl methacrylate and 6 g of methyl methacrylate to the emulsifier aqueous solution, stir and mix, and obtain a mixed solution;

[0034] Take 3g of coupling agent vinyl triethoxysilane, 50g of dodecafluoroheptyl methacrylate and 1g of 5% potassium persulfate, and after shear emulsification, first take 1 / 3 of the mass of the emulsion after shear emulsification and stir with the mixed liquid, then add the remaining mass of the emulsion after shear emulsification dropwise, and keep the reaction at 75°C for 2h to prepare the fluorosilicone copolymer emulsion.

[0035] Preparation Example 2: Fluorosilicone Copolymer Emulsion 2:

[0036] Mix 250 mL of deionized water with 2.5 g of emulsifier DNS-86, collect the emulsifier aqueous solution, add 22 g of lauryl methacrylate and 8 g of methyl methacrylate to the emulsifier aqueous solution, stir and mix, and obtain a mixed solution;

[0037] Take 4g of coupling agent vinyl triethoxysilane, 55g of dodecafluoroheptyl methacrylate and 1g of 5% potassium persulfate, and after shear emulsification, first take 1 / 3 of the mass of the emulsion after shear emulsification and stir with the mixed liquid, then add the remaining mass of the emulsion after shear emulsification dropwise, and react at 77°C for 2.5h to prepare the fluorosilicone copolymer emulsion 2.

[0038] Preparation Example 3: Fluorosilicone Copolymer Emulsion 3:

[0039] Mix 300 mL of deionized water with 3 g of emulsifier DNS-86, collect the emulsifier aqueous solution, add 25 g of lauryl methacrylate and 10 g of methyl methacrylate to the emulsifier aqueous solution, stir and mix, and obtain a mixed solution;

[0040] Take 5g of coupling agent vinyl triethoxysilane, 60g of dodecafluoroheptyl methacrylate and 1g of 5% potassium persulfate, and after shear emulsification, first take 1 / 3 of the mass of the emulsion after shear emulsification and stir with the mixed liquid, then add the remaining mass of the emulsion after shear emulsification dropwise, and react at 80°C for 3h to prepare the fluorosilicone copolymer emulsion.

[0041] Preparation Example 4: Graphene oxide 1:

[0042] Take 0.5 g of graphene oxide and place it in 100 g of deionized water, disperse it by ultrasonic, and collect the dispersion;

[0043] 0.1 g of coupling agent KH-560 was dispersed in 10 mL of anhydrous ethanol, stirred and mixed, and added dropwise to the dispersion, heated in a water bath at 80° C. to react, filtered and the filter cake was collected, and vacuum dried to prepare the modified graphene oxide. Example

[0044] Example 1

[0045] A waterproof, antifouling and oil-proof fabric comprises a fabric substrate and a finishing layer coated on the surface of the fabric substrate, wherein the finishing layer is formed by finishing and coating with a finishing agent, and the finishing agent comprises 45 kg of fluorosilicone copolymer emulsion 1, 6 kg of deionized water and 0.5 kg of graphene oxide.

[0046] A method for preparing a waterproof, antifouling and oil-proof fabric comprises the following preparation steps:

[0047] S1. Take the finishing liquid and dilute it with water, collect the working liquid, immerse the fabric in the working liquid, and then use a roller to remove the excess working liquid, and control the roller pressure to 0.3MPa;

[0048] S2. Take the fabric and place it in a setting machine. After setting, dry it at 100°C and then bake it at 150°C. Calendering can complete the preparation of waterproof, anti-fouling and oil-proof fabric.

[0049] Example 2

[0050] A waterproof, antifouling and oil-proof fabric comprises a fabric substrate and a finishing layer coated on the surface of the fabric substrate, wherein the finishing layer is formed by finishing and coating with a finishing agent, and the finishing agent comprises 52 kg of fluorosilicone copolymer emulsion 1, 11 kg of deionized water and 1 kg of graphene oxide.

[0051] A method for preparing a waterproof, antifouling and oil-proof fabric comprises the following preparation steps:

[0052] S1. Take the finishing liquid and dilute it with water, collect the working liquid, immerse the fabric in the working liquid, and then use a roller to remove the excess working liquid, and control the roller pressure to 0.3MPa;

[0053] S2. Take the fabric and place it in a setting machine. After setting, dry it at 100°C and then bake it at 150°C. Calendering can complete the preparation of waterproof, anti-fouling and oil-proof fabric.

[0054] Example 3

[0055] A waterproof, antifouling and oil-proof fabric comprises a fabric substrate and a finishing layer coated on the surface of the fabric substrate, wherein the finishing layer is formed by finishing and coating with a finishing agent, and the finishing agent comprises 60 kg of fluorosilicone copolymer emulsion 1, 15 kg of deionized water and 1.5 kg of graphene oxide.

[0056] A method for preparing a waterproof, antifouling and oil-proof fabric comprises the following preparation steps:

[0057] S1. Take the finishing liquid and dilute it with water, collect the working liquid, immerse the fabric in the working liquid, and then use a roller to remove the excess working liquid, and control the roller pressure to 0.3MPa;

[0058] S2. Take the fabric and place it in a setting machine. After setting, dry it at 100°C and then bake it at 150°C. Calendering can complete the preparation of waterproof, anti-fouling and oil-proof fabric.

[0059] Example 4

[0060] A waterproof, antifouling and oil-proof fabric comprises a fabric substrate and a finishing layer coated on the surface of the fabric substrate, wherein the finishing layer is formed by finishing and coating with a finishing agent, and the finishing agent comprises 60 kg of fluorosilicone copolymer emulsion 1, 15 kg of deionized water, 1.5 kg of graphene oxide and 6 kg of propylene glycol triglycidyl ether.

[0061] A method for preparing a waterproof, antifouling and oil-proof fabric comprises the following preparation steps:

[0062] S1. Take the finishing liquid and dilute it with water, collect the working liquid, immerse the fabric in the working liquid, and then use a roller to remove the excess working liquid, and control the roller pressure to 0.3MPa;

[0063] S2. Take the fabric and place it in a setting machine. After setting, dry it at 100°C and then bake it at 150°C. Calendering can complete the preparation of waterproof, anti-fouling and oil-proof fabric.

[0064] Example 5

[0065] A waterproof, antifouling and oil-proof fabric comprises a fabric substrate and a finishing layer coated on the surface of the fabric substrate, wherein the finishing layer is formed by finishing and coating with a finishing agent, and the finishing agent comprises 60 kg of fluorosilicone copolymer emulsion 1, 15 kg of deionized water, 1.5 kg of graphene oxide and 9 kg of propylene glycol triglycidyl ether.

[0066] A method for preparing a waterproof, antifouling and oil-proof fabric comprises the following preparation steps:

[0067] S1. Take the finishing liquid and dilute it with water, collect the working liquid, immerse the fabric in the working liquid, and then use a roller to remove the excess working liquid, and control the roller pressure to 0.3MPa;

[0068] S2. Take the fabric and place it in a setting machine. After setting, dry it at 100°C and then bake it at 150°C. Calendering can complete the preparation of waterproof, anti-fouling and oil-proof fabric.

[0069] Example 6

[0070] A waterproof, antifouling and oil-proof fabric comprises a fabric substrate and a finishing layer coated on the surface of the fabric substrate, wherein the finishing layer is formed by finishing and coating with a finishing agent, and the finishing agent comprises 60 kg of fluorosilicone copolymer emulsion 1, 15 kg of deionized water, 1.5 kg of graphene oxide and 12 kg of propylene glycol triglycidyl ether.

[0071] A method for preparing a waterproof, antifouling and oil-proof fabric comprises the following preparation steps:

[0072] S1. Take the finishing liquid and dilute it with water, collect the working liquid, immerse the fabric in the working liquid, and then use a roller to remove the excess working liquid, and control the roller pressure to 0.3MPa;

[0073] S2. Take the fabric and place it in a setting machine. After setting, dry it at 100°C and then bake it at 150°C. Calendering can complete the preparation of waterproof, anti-fouling and oil-proof fabric.

[0074] Performance testing

[0075] The waterproof, antifouling and oil-proof fabrics prepared in Examples 1 to 6 were tested, and the specific testing method is as follows:

[0076] Waterproof performance: Tested in accordance with AATCC22 "Textile Water Repellency Test Spray Method".

[0077] Oil repellency: Tested in accordance with AATCC118 "Textile Oil Repellency Test - Hydrocarbon Resistance Test".

[0078] Liquid stain resistance test: Tested in accordance with GB / T30159.1 "Testing and evaluation of antifouling properties of textiles Part 1: Stain resistance", and washed in accordance with the test standards specified in GB / T12490-2014 "Textiles - Tests for color fastness - Color fastness to domestic and commercial washing". The mass concentration of soaping liquid is 2g / L, the bath ratio is 1:30, the washing temperature is 30℃, the washing time is 5min, and the liquid stain resistance test is carried out again after washing.

[0079] The test results are shown in Table 1 below:

[0080] Table 1 Performance test table

[0081]

[0082] Combined with the data of Examples 1 to 6, it can be found that the present application selects fluorosilicone copolymer emulsion as the main modified material. Since the Si-OH in the siloxane material in the fluorosilicone copolymer emulsion can react with the hydroxyl -OH of the fabric fiber to form a covalent bond, an effective coating is formed on the surface of the fabric, thereby improving the structural properties of the fabric and improving the three-proof properties of the fabric.

[0083] Furthermore, in combination with the data of Examples 1 to 6 and the data of the water wash resistance test, it can be found that the present application optimizes the components of the finishing agent and selects the addition of propylene glycol triglycidyl ether to improve the bonding strength between the finishing agent and the fabric substrate. Since propylene glycol triglycidyl ether contains 3 epoxy groups, it can react with the hydroxyl groups on the fabric fibers to form hydroxyl groups and ether bonds. The generated hydroxyl groups and epoxy groups continue to react to form ether bonds and hydroxyl groups, thus producing a cross-linking reaction, which can improve the water wash resistance, thereby improving the durability of the three-proof fabric.

[0084] 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 waterproof, anti-fouling and oil-proof fabric, characterized in that: It includes a fabric substrate and a finishing layer coated on the surface of the fabric substrate, wherein the finishing layer is formed by finishing and coating with a finishing agent, and the finishing agent includes the following materials in parts by weight: 45-60 parts of fluorosilicone copolymer emulsion; 6-15 parts of deionized water; 0.5-1.5 parts of graphene oxide; The graphene oxide is modified graphene oxide, and the modified graphene oxide is prepared by the following scheme: Taking graphene oxide and placing it in deionized water, ultrasonically dispersing it, and collecting the dispersion; The coupling agent is dispersed in anhydrous ethanol, stirred and mixed, and then added dropwise to the dispersion, heated in a water bath for reaction, filtered and the filter cake is collected, and vacuum dried to prepare the modified graphene oxide; the fluorosilicone copolymer emulsion is prepared by the following scheme: Mixing deionized water and an emulsifier, collecting the emulsifier aqueous solution, adding lauryl methacrylate and methyl methacrylate to the emulsifier aqueous solution, stirring and mixing, and obtaining a mixed solution; Adding vinyl triethoxysilane, dodecafluoroheptyl methacrylate and an initiator to the mixed solution, heating in a water bath after shearing and emulsification, and keeping the temperature for reaction to prepare the fluorosilicone copolymer emulsion; The finishing agent also includes 6 to 12 parts by weight of glycerol triglycidyl ether.

2. The waterproof, antifouling and oil-proof fabric according to claim 1, characterized in that: The heat preservation reaction used in the preparation process of the fluorosilicone copolymer emulsion includes first taking 1 / 3 of the mass of the shear emulsified emulsion and stirring it, then dropping the remaining mass of the shear emulsified emulsion, and heat-preserving the reaction at 75-80° C. for 2-3 hours.

3. A method for preparing a waterproof, antifouling and oil-proof fabric according to any one of claims 1 to 2, characterized in that: The method comprises the following preparation steps: S1, take the finishing liquid and dilute it with water, collect the working liquid, immerse the fabric in the working liquid, and then use a roller to remove the excess working liquid; S2, taking the fabric and placing it in a setting machine, after setting treatment, drying and then baking treatment, calendering can complete the preparation of waterproof, anti-fouling and oil-proof fabric.

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