Antibacterial antifouling fabric, preparation method thereof and vehicle

Abstract

The invention discloses an antibacterial and antifouling fabric, a preparation method thereof and a vehicle, the antibacterial and antifouling fabric comprises a fabric and a modified composition combined with the fabric, and the fabric is made of at least one of polyester fibers and nylon; based on the weight of the modified composition, the modified composition is prepared from the following components in parts by weight: 100 to 150 parts of fluorine-containing acrylate polymer, 100 to 150 parts of isothiazolinone compound and 215 to 360 parts of functional additive. The fabric is modified through the fluorine-containing acrylate polymer and the isothiazolinone compound, so that the fabric has better antifouling and antibacterial properties and also has obvious wear resistance and stability.

Description

Technical Field

[0001] The present invention relates to the technical field of fabrics, and in particular to an antibacterial and antifouling fabric, a preparation method thereof, and a vehicle. Background Art

[0002] Textiles can absorb various nutrients in the air. Under suitable temperature and humidity conditions, microorganisms inhabiting the textiles can multiply and spread in large numbers, decompose to produce secretions, bringing odor substances such as ammonia, or generating plaque on the fabric, causing discomfort or adverse effects to the human body. At the same time, the textiles will mildew, embrittle or even age. As an important part of the modern automotive safety system, the automotive seat belt made of textiles should have efficient antifouling and antibacterial properties while ensuring the performance safety and reliability of the seat belt to ensure the safety and health of the passengers.

[0003] However, the existing fabric antifouling and antibacterial modification methods usually use nano-silver ion solution as the antibacterial agent and ethylene glycol phthalate as the antifouling agent, which have defects such as high cost, complex methods, and insufficient performance durability and wear resistance, and are not suitable for seat belt fabrics with strict cost control, high process stability requirements, and long-term exposure to friction. Summary of the Invention

[0004] The present invention provides an antibacterial and antifouling fabric, a preparation method thereof, and a vehicle to solve the problems of complex fabric antifouling and antibacterial modification methods and insufficient antifouling and antibacterial durability in the prior art.

[0005] The technical solutions adopted by the present invention to solve the above technical problems are as follows: In a first aspect, the present invention provides an antibacterial and antifouling fabric, including a fabric and a modified composition combined with the fabric, and the material of the fabric includes at least one of polyester fiber and nylon; Based on the weight of the modified composition, the modified composition includes 100 - 150 parts of a fluorinated acrylate polymer, 100 - 150 parts of an isothiazolinone compound, and 215 - 360 parts of a functional additive.

[0006] Optionally, the fluorinated acrylate polymer includes at least one of perfluorohexyl acrylate polymer and poly(perfluoropropylene - fluorinated silane) copolymer; And / or, the isothiazolinone compound includes at least one of phenylpropyl isothiazolinone, hydroxybenzyl alcohol isothiazolinone, and N - aminoethyl isothiazolin - 3 - one.

[0007] Optionally, the additive includes at least one of an adhesive, a softener, a crosslinking agent, and a penetrant.

[0008] Optionally, based on the weight of the modified composition, the auxiliaries include 100-150 parts of binder, 100-150 parts of softener, 15-50 parts of crosslinking agent, and 0-10 parts of penetrant.

[0009] Optionally, the binder includes metal chloride and polyol; The softener includes silicone compounds; The crosslinking agent includes ketoxime compounds; The penetrant includes trialkyl phosphate compounds.

[0010] Optionally, the metal chloride includes at least one of zinc chloride and aluminum chloride, and the polyol includes at least one of diethylene glycol, glycerol, and polyethylene glycol; And / or, the silicone compounds include at least one of polymethylhydrosiloxane and epoxy polydimethylsiloxane; And / or, the ketoxime compounds include at least one of 2-butanone oxime, methyl ethyl ketone oxime, and cyclohexanone oxime; And / or, the trialkyl phosphate compounds include at least one of tributyl phosphate, trioctyl phosphate, and tricresyl phosphate.

[0011] In a second aspect, the present invention provides a method for preparing an antibacterial and antifouling fabric as described in any one of the above, comprising the following steps: Adding the modified composition to water to disperse and obtain a modified solution, and immersing the fabric in the modified solution; Then padding the fabric, through two-bath two-padding, controlling the liquor pickup rate to be 30%-60%; Drying the padded fabric to obtain an antibacterial and antifouling fabric.

[0012] Optionally, before immersing the fabric in the modified solution, it further includes adding a conditioning acid to the modified solution to make the pH of the modified solution 5-6.

[0013] Optionally, the conditioning acid includes at least one of sodium polyacrylate / citric acid and tartaric acid / sodium citrate.

[0014] In a third aspect, the present invention provides a vehicle including a seat belt, the seat belt being made of the antibacterial and antifouling fabric as described above, or the seat belt being made of the antibacterial and antifouling fabric prepared by the preparation method as described above.

[0015] In the present invention, by introducing fluorinated acrylate polymers into the modified composition, long-chain alkyl groups and fluorine atoms in the polymers are loaded onto the fabric surface, thereby performing anti-fouling modification on the fabric. This can significantly reduce the surface activity of the fabric, form a shielding protection inside the fabric, and effectively repel oil, water, and pollutants. By introducing isothiazolinone compounds into the modified composition, antibacterial modification of the fabric is carried out. The isothiazolinone compounds bind to phospholipids and proteins on the bacterial cell membrane, which can cause the rupture of the membrane structure, and can actively attack the sulfhydryl groups or amino acid residues inside microbial cells, crosslink or alkylate proteins and enzymes, thereby destroying their spatial structure and function, and achieving the antibacterial property of the fabric.

[0016] Specifically, by means of the impregnation-drying-curing method, using the modified composition to modify the fabric can significantly reduce the number of padding times and the duration of the fabric, maintain the aesthetics of light-colored fabrics, and achieve the optimization of the anti-fouling and antibacterial properties of the fabric surface. The preparation method of the antibacterial and anti-fouling fabric of the present application is simple and fast, takes a short time, does not require additional equipment, and has a low cost. Detailed implementation mode

[0017] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the following further describes the present invention in detail with reference to embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0018] An embodiment of the present invention provides an antibacterial and anti-fouling fabric, including a fabric and a modified composition combined with the fabric, and the material of the fabric includes at least one of polyester fiber and nylon; Based on the weight of the modified composition, the modified composition includes 100-150 parts of fluorinated acrylate polymers, 100-150 parts of isothiazolinone compounds, and 215-360 parts of functional additives.

[0019] In this embodiment, by introducing fluorinated acrylate polymers into the modified composition, long-chain alkyl groups and fluorine atoms in the polymers are loaded onto the fabric surface, thereby performing anti-fouling modification on the fabric. This can significantly reduce the surface activity of the fabric, form a shielding protection inside the fabric, and effectively repel oil, water, and pollutants. By introducing isothiazolinone compounds into the modified composition, antibacterial modification of the fabric is carried out. The isothiazolinone compounds bind to phospholipids and proteins on the bacterial cell membrane, which can cause the rupture of the membrane structure, and can actively attack the sulfhydryl groups or amino acid residues inside microbial cells, crosslink or alkylate proteins and enzymes, thereby destroying their spatial structure and function, and achieving the antibacterial property of the fabric.

[0020] Specifically, the parts by weight of the fluorinated acrylate polymer include, but are not limited to, 100 parts, 105 parts, 110 parts, 115 parts, 120 parts, 125 parts, 130 parts, 135 parts, 140 parts, 145 parts or 150 parts. The parts by weight of the isothiazolinone compound include, but are not limited to, 100 parts, 105 parts, 110 parts, 115 parts, 120 parts, 125 parts, 130 parts, 135 parts, 140 parts, 145 parts or 150 parts.

[0021] Furthermore, the fluorinated acrylate polymer is a high molecular polymer obtained by polymerization between fluorinated acrylate monomers or between acrylate monomers and fluorinated monomers.

[0022] In one embodiment, the fluorinated acrylate polymer includes at least one of perfluorohexyl acrylate polymer, poly(perfluoropropylene-silane fluoride) copolymer. By selecting the above compounds, the fabric can be better modified for stain resistance, and a stain-resistant functional layer can be formed on the fabric surface, making the stain resistance of the fabric have certain wear resistance and stability.

[0023] In one embodiment, the isothiazolinone compound includes at least one of phenylpropyl isothiazolinone, hydroxybenzyl alcohol isothiazolinone, N-aminoethyl isothiazolin-3-one. By selecting the above compounds, the fabric can be better modified for antibacterial properties, and an antibacterial functional layer can be formed on the fabric surface to improve the antibacterial performance of the fabric.

[0024] In some embodiments, the auxiliary agent includes at least one of an adhesive, a softener, a crosslinking agent, and a penetrant. By adding an adhesive, the adhesion between the fluorinated acrylate polymer, the isothiazolinone compound and the fabric fibers can be increased, and the ductility of the functional layer formed by the fluorinated acrylate polymer and the isothiazolinone compound on the fabric surface can be improved.

[0025] By adding a softener, the physical interaction between fabric fibers is weakened, making the fabric have a better soft and smooth touch.

[0026] By adding a crosslinking agent, which undergoes covalent or hydrogen bond crosslinking with fabric fibers, the fluorinated acrylate polymer, and the isothiazolinone compound, the network structure formed by the fluorinated acrylate polymer and the isothiazolinone compound can be effectively fixed on the fabric surface, enhancing the durability of the stain resistance / antibacterial function of the fabric.

[0027] By adding a penetrant, the fluorinated acrylate polymer and the isothiazolinone compound can be more evenly diffused into the fabric interior, thereby enhancing the binding force between the fluorinated acrylate polymer, the isothiazolinone compound and the fabric.

[0028] In some embodiments, based on the weight of the modified composition, the auxiliaries include 100-150 parts of a binder, 100-150 parts of a softener, 15-50 parts of a crosslinking agent, and 0-10 parts of a penetrant. By treating the fabric surface with the softener, binder, crosslinking agent, and penetrant, the binding effect between the fabric surface and the functional group molecules is improved, making the anti-fouling and antibacterial functional layer of the fabric have more significant stability and wear resistance.

[0029] Specifically, the parts by weight of the binder include, but are not limited to, 100 parts, 105 parts, 110 parts, 115 parts, 120 parts, 125 parts, 130 parts, 135 parts, 140 parts, 145 parts, or 150 parts. The parts by weight of the softener include, but are not limited to, 100 parts, 105 parts, 110 parts, 115 parts, 120 parts, 125 parts, 130 parts, 135 parts, 140 parts, 145 parts, or 150 parts. The parts by weight of the crosslinking agent include, but are not limited to, 15 parts, 20 parts, 25 parts, 30 parts, 35 parts, 40 parts, 45 parts, or 50 parts. The parts by weight of the penetrant include, but are not limited to, 0.5 parts, 1 part, 1.5 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts, 4.5 parts, 5 parts, 5.5 parts, 6 parts, 6.5 parts, 7 parts, 7.5 parts, 8 parts, 8.5 parts, 9 parts, 9.5 parts, or 10 parts.

[0030] In some embodiments, the binder includes metal chlorides and polyols. By selecting a binder obtained by mixing metal chlorides and polyols, the adhesion between the fluorinated acrylate polymer, isothiazolinone compound, and fabric fibers can be increased, and the ductility of the functional layer can be improved.

[0031] The softener includes organosilicon compounds. By selecting organosilicon compounds, the dynamic flexibility of the siloxane main chain and the hydrophobic side groups weaken the physical interaction between fabric fibers, making the fabric have a better soft touch.

[0032] The crosslinking agent includes ketoxime compounds. By covalently or hydrogen-bond crosslinking its active carbonyl or oxime group with fabric fibers, fluorinated acrylate polymers, and isothiazolinone compounds, the network structure formed by fluorinated acrylate polymers and isothiazolinone compounds can be effectively fixed on the fabric surface, enhancing the durability of the anti-fouling and antibacterial functions of the fabric.

[0033] The penetrant includes trialkyl phosphate compounds. Through its strong polarity and interfacial activity of branched alkyl groups, the fluorinated acrylate polymer and isothiazolinone compound can be more evenly diffused into the fabric interior, thereby enhancing the binding force between the fluorinated acrylate polymer, isothiazolinone compound, and the fabric.

[0034] In some embodiments, the metal chloride includes at least one of zinc chloride and aluminum chloride, and the polyol includes at least one of diethylene glycol, glycerol, and polyethylene glycol; The organosilicon compound includes at least one of polymethyl hydrogen siloxane and epoxy polydimethyl siloxane; The ketoxime compound includes at least one of 2-butanone oxime, methyl ethyl ketoxime and cyclohexanone oxime; The trialkyl phosphate compound includes at least one of tri-tert-butyl phosphate, trioctyl phosphate and tricresyl phosphate.

[0035] By selecting the above compounds to treat the fabric surface, the bonding effect between the fabric surface and the fluorinated acrylic polymer and isothiazolinone compound is improved, so that the antifouling and antibacterial functional layer of the fabric has more significant stability and wear resistance.

[0036] An embodiment of the present invention provides a method for preparing the antibacterial and antifouling fabric as described in any one of the above, comprising the following steps: The modified composition is added into water to disperse to obtain a modified solution, and the fabric is immersed in the modified solution; The fabric is then dipped and rolled, and after two dips and two rolls, the liquid carrying rate is controlled to be 30%-60%; it can be understood that the liquid carrying rate = [(wet fabric mass-dry fabric mass) / dry fabric mass]*100%.

[0037] The impregnated fabric is dried to obtain the antibacterial and antifouling fabric.

[0038] By using the modified composition to modify the fabric through the impregnation-drying-curing method, the number and duration of fabric immersion can be significantly reduced, the aesthetics of light-colored fabrics can be maintained, and the antifouling and antibacterial properties of the fabric surface can be optimized. The preparation method of the antibacterial and antifouling fabric of the present application is simple, fast, time-saving, does not require the use of other equipment, and is low-cost.

[0039] Specifically, the dipping time is 30s-60s, the squeezing time in the dipping and rolling process is 5s-15s, the drying temperature is 150-200°C, and the drying time is 2-10 minutes.

[0040] In some embodiments, before the fabric is immersed in the modifying solution, a modulating acid is added to the modifying solution to make the pH of the modifying solution be 5-6.

[0041] In some embodiments, the blending acid includes at least one of sodium polyacrylate / citric acid and tartaric acid / sodium citrate.

[0042] An embodiment of the present invention provides a vehicle, comprising a seat belt, wherein the seat belt is made of the antibacterial and antifouling fabric described above, or the seat belt is made of the antibacterial and antifouling fabric prepared by the preparation method described above.

[0043] The present invention is further described below by way of examples.

[0044] Example 1 This example is used to illustrate the antibacterial and antifouling fabric disclosed in the present invention and its preparation method.

[0045] 100 parts of perfluorohexyl acrylate polymer, 120 parts of phenylpropyl isothiazolinone, 120 parts of zinc chloride and diethylene glycol, 130 parts of polymethylhydrogensiloxane, 15 parts of 2-butanone oxime, and 3 parts of tri-tert-butyl phosphate are placed in a padding mill, and deionized water and 1 part of sodium polyacrylate and citric acid are added to adjust the pH of the modified solution to 5-6.

[0046] The fabric was immersed in the modified solution at 25°C for 45 seconds, then rolled, the number of dipping and rolling was set to two dipping and two rolling, the rolling time was 10 seconds, the liquid carrying rate was 50%, and finally dried, the drying temperature was 170°C, and the drying time was 6 minutes.

[0047] Example 2-13 Examples 2-13 are used to illustrate the antibacterial and antifouling fabric and the preparation method thereof disclosed in the present invention, and include most of the operation steps in the above-mentioned Example 1, except that the modified solution is prepared using the formula in Table 1.

[0048] Table 1 Embodiment 14, 15 Examples 14 and 15 are used to illustrate the antibacterial and antifouling fabric and the preparation method thereof disclosed in the present invention, and include most of the operating steps in the above-mentioned Example 1, except that the modified solution is prepared using the formula in Table 2.

[0049] Table 2 Comparative Examples 1-5 Comparative Examples 1-5 are used to illustrate the antibacterial and antifouling fabric and the preparation method thereof disclosed in the present invention, and include most of the operation steps in the above-mentioned Example 1, except that the modified solution is prepared using the formula in Table 1.

[0050] Performance Testing 1. The following performance tests were performed on the antibacterial and antifouling fabrics prepared in the above examples and comparative examples: The stain resistance was tested in accordance with GB / T 30159.1; the waterproof performance was tested in accordance with GB / T 21655.1-2008; the oil resistance was tested in accordance with GB / T 19977-2014; the fabric friction treatment was carried out in accordance with GB / T 21196.2-2007; the antibacterial performance of the fabric was evaluated by testing the antibacterial rates against Escherichia coli, Staphylococcus aureus, and Candida albicans after the fabric was washed 50 times, and its antibacterial property was tested in accordance with FZ / T 73023-2006. The specific test results were filled in Table 3.

[0051] Table 3 From the test results of Examples 1-5 and Comparative Example 5 in Table 1, it can be seen that after adding fluorinated acrylate polymers, isothiazolinone compounds and other functional additives, the comprehensive stain resistance and antibacterial properties of the fabric are significantly improved. The stain resistance grade of the original fabric of Comparative Example 5 for liquid stains is only 3, and the oil resistance grade is close to 0. However, after being optimized by the modified composition, the stain resistance grade of Examples 1-5 can reach 5, and the oil resistance grade can be increased to the highest grade of 8. In addition, the water droplet diffusion time of the original fabric of Comparative Example 5 is only 7.2 s, and the water droplet diffusion time of the antibacterial and stain-resistant fabric after modification exceeds 300 s, showing obvious hydrophobicity. At the same time, after Martindale friction, the stain resistance performance grade, water droplet diffusion time and oil resistance performance grade of the antibacterial and stain-resistant fabrics of Examples 1-5 did not show obvious decline, further proving that the modified process of impregnation-drying-curing and the added modified composition can realize the construction of a strong and firmly bonded stain-resistant functional layer on the fabric surface, and the stain resistance of the antibacterial and stain-resistant fabric in this example has certain wear resistance and stability. Comparing the antibacterial rates of the antibacterial and stain-resistant fabrics of Examples 1-5 and the original fabric of Comparative Example 5 against three kinds of bacteria after washing 50 times, it can be seen that the inhibition rates of the modified seat belt fabrics of Examples 1-5 against the three kinds of bacteria have been significantly improved, especially the inhibition rate against Candida albicans, which has increased by up to 37%, and can effectively protect passengers from skin diseases such as erythema and papules caused by Candida albicans. According to FZ / T 73023-2006, the modified seat belt fabrics of Examples 1-5 all meet the fabric AAA-level antibacterial grade index. From the test results of Examples 6-9 and Examples 4 and Comparative Example 5 in Table 1, it can be seen that when the dosages of stain-resistant additives such as fluorinated acrylate polymers or antibacterial additives such as isothiazolinone compounds are appropriately increased or decreased within the protection range during the modification process, the modified seat belts still have excellent stain resistance and antibacterial properties, and the related properties do not show obvious attenuation, further proving the wide applicability of the dosages of stain-resistant and antibacterial additives.

[0052] From the comparison of the test results of Comparative Examples 1-4 with Examples 1-9 and Comparative Example 5 in the table, it can be seen that although the modified safety belts in Comparative Examples 1-4 have obvious comprehensive anti-fouling and antibacterial properties, when the concentrations of the anti-fouling agent and the antibacterial agent deviate from the appropriate ratio, due to competitive adsorption between molecules or weakened synergistic effects, an antagonistic effect occurs, resulting in the optimization effect of the anti-fouling and antibacterial properties of the modified fabrics in Comparative Examples 1-4 being inferior to that of Examples 1-9.

[0053] From the test results of Examples 10-13 and Comparative Example 5, it can be seen that the absence of any one of the binder, softener, cross-linking agent and penetrant will significantly reduce the interfacial binding strength between the modified additive molecules and the surface active groups of the fabric, thereby causing a decrease in the anti-fouling and antibacterial properties of the fabric surface and insufficient stability and wear resistance of its functional layer, further proving the important synergistic effect of the four types of additives on the optimization of the anti-fouling and antibacterial properties of the modified fabric.

[0054] From the comparison of the test results of Examples 14-15 with Example 1 and Comparative Example 5 in Table 1, it can be seen that when other types of compounds such as fluorinated acrylate polymers, isothiazolinone compounds and binders are selected to participate in the modification process, through the synergistic effect of each component, the anti-fouling and antibacterial properties equivalent to those of Example 1 can be achieved.

[0055] The above-described embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. An antibacterial and antifouling fabric, characterized in that, Comprising a fabric and a modified composition combined with the fabric, the material of the fabric comprising at least one of polyester fiber and nylon; Based on the weight of the modified composition, the modified composition comprises 100 - 150 parts of a fluorinated acrylate polymer, 100 - 150 parts of an isothiazolinone compound, and 215 - 360 parts of a functional auxiliary agent.

2. The antibacterial and antifouling fabric according to claim 1, wherein The fluorinated acrylate polymer comprises at least one of a perfluorohexyl acrylate polymer and a poly(perfluoropropene - fluorinated silane) copolymer; And / or, the isothiazolinone compound comprises at least one of phenylpropyl isothiazolinone, hydroxybenzyl alcohol isothiazolinone, and N - aminoethyl isothiazolin - 3 - one.

3. The antibacterial and antifouling fabric according to claim 1, wherein, The auxiliary agent comprises at least one of an adhesive, a softener, a cross - linker, and a penetrant.

4. The antibacterial and antifouling fabric according to claim 3, characterized in that, Based on the weight of the modified composition, the auxiliary agent comprises 100 - 150 parts of an adhesive, 100 - 150 parts of a softener, 15 - 50 parts of a cross - linker, and 0 - 10 parts of a penetrant.

5. The antibacterial and antifouling fabric according to claim 3, wherein The adhesive comprises a metal chloride and a polyol; The softener comprises an organosilicon compound; The cross - linker comprises a ketoxime compound; The penetrant comprises a trialkyl phosphate compound.

6. The antibacterial and antifouling fabric according to claim 5, wherein, The metal chloride comprises at least one of zinc chloride and aluminum chloride, and the polyol comprises at least one of diethylene glycol, glycerol, and polyethylene glycol; And / or, the organosilicon compound comprises at least one of polymethylhydrosiloxane and epoxy - based polydimethylsiloxane; And / or, the ketoxime compound comprises at least one of 2 - butanone oxime, methyl ethyl ketone oxime, and cyclohexanone oxime; And / or, the trialkyl phosphate compound comprises at least one of tributyl phosphate, trioctyl phosphate, and tricresyl phosphate.

7. A method for preparing an antibacterial and antifouling fabric according to any one of claims 1-6, characterized in that, Comprising the following steps: Adding the modified composition into water, dispersing to obtain a modified solution, and immersing the fabric in the modified solution; Then padding the fabric, through two - dip two - nip, controlling the liquor pick - up rate to be 30% - 60%; Drying the padded fabric to obtain an antibacterial and antifouling fabric.

8. The preparation method of the antibacterial and antifouling fabric according to claim 7, characterized in that, Before immersing the fabric in the modified solution, it further comprises adding a conditioning acid to the modified solution to make the pH of the modified solution 5 - 6.

9. The preparation method of the antibacterial and antifouling fabric according to claim 7, characterized in that, The conditioning acid comprises at least one of sodium polyacrylate / citric acid and tartaric acid / sodium citrate.

10. A vehicle, characterized in that, Comprising a safety belt, the safety belt is made of the antibacterial and antifouling fabric according to any one of claims 1 - 6, or the safety belt is made of the antibacterial and antifouling fabric prepared by the preparation method according to any one of claims 7 - 9.

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