Anti-ultraviolet polyester fabric as well as preparation method and application thereof

Abstract

The invention relates to the technical field of functional fabrics, in particular to an anti-ultraviolet polyester fabric and a preparation method and application thereof.The preparation method of the anti-ultraviolet polyester fabric comprises the steps that a composition used for absorbing ultraviolet rays, a polyester fabric, dye and water are mixed and subjected to one bath, then reduction cleaning, hot water washing and drying are conducted, and the anti-ultraviolet polyester fabric is obtained; wherein the composition is prepared by compounding an anionic ultraviolet light absorber, an aromatic-anionic ultraviolet light absorber, an N, N-diphenyl diamide reactive ultraviolet light absorber and a solvent. According to the anti-ultraviolet polyester fabric prepared by the method provided by the invention, the anti-ultraviolet effect can be improved from 3-4 levels of an original fabric to 5 levels, and meanwhile, compared with the original fabric, the anti-ultraviolet polyester fabric provided by the invention is relatively small in colored light change, and does not need to be toned subsequently, so that the production cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of functional fabrics, and specifically relates to an anti-ultraviolet polyester fabric, a preparation method thereof, and an application thereof. Background Art

[0002] In the modern textile market, consumers increasingly pursue functional fabrics, and among them, fabrics with anti-ultraviolet functions are particularly favored. Traditional polyester fabrics are widely used in daily clothing and outdoor products due to their high strength, wear resistance, easy care, etc., but their anti-ultraviolet performance is not satisfactory. Especially in outdoor products, after long-term sunlight exposure, the color and strength of the fabric will decrease to a large extent, greatly affecting their wearing performance. Although some polyester fabrics can obtain a certain degree of anti-ultraviolet effect through subsequent treatment, the improvement effect is not satisfactory. Summary of the Invention

[0003] The purpose of the present invention is to solve the problem that the anti-ultraviolet performance of existing polyester fabrics cannot meet the use requirements, and to provide an anti-ultraviolet polyester fabric and a preparation method thereof. The anti-ultraviolet polyester fabric prepared by the preparation method provided by the present invention has a good anti-ultraviolet effect and meets people's use requirements for anti-ultraviolet fabrics.

[0004] To achieve the above purpose, the present invention provides a preparation method of an anti-ultraviolet polyester fabric. The preparation method includes co-bathing a composition for absorbing ultraviolet rays with a polyester fabric, a dye, and water, and then performing reduction cleaning, hot water washing, and drying to obtain the anti-ultraviolet polyester fabric; wherein, the composition is compounded by an anionic ultraviolet absorber, an aromatic-anionic ultraviolet absorber, a reactive ultraviolet absorber of N,N-diphenyl oxamide, and a solvent.

[0005] Preferably, the dosage of the composition is 2-4 o.w.f%, the dosage of the dye is 3-5 o.w.f%, and the bath ratio of the water is 1:10-15.

[0006] Preferably, the conditions for the co-bathing include: the temperature is 120-140 °C, and the time is 50-70 min.

[0007] Preferably, the composition is compounded from the following raw materials by weight percentage: 30-35% by weight of an anionic ultraviolet absorber, 10-20% by weight of an aromatic-anionic ultraviolet absorber, 10-20% by weight of a reactive ultraviolet absorber of N,N-diphenyl oxamide, and the rest is a solvent.

[0008] Preferably, the dye is a disperse dye.

[0009] Preferably, the conditions for the reduction cleaning include: performing reduction cleaning in a cleaning solution containing sodium dithionite and sodium carbonate for 15 - 20 min; wherein, the mass concentration of sodium dithionite is 2 - 4 g / L, the mass concentration of sodium carbonate is 0.5 - 2 g / L, and the temperature of the cleaning solution is 80 - 85 °C.

[0010] Preferably, the conditions for the hot water washing include: the hot water washing temperature is 90 - 95 °C, and the time is 10 - 20 min.

[0011] Preferably, the conditions for the drying include: the temperature is 60 - 70 °C.

[0012] The present invention also provides an anti-ultraviolet polyester fabric prepared by the above-mentioned preparation method.

[0013] The present invention also provides an application of the above-mentioned anti-ultraviolet polyester fabric in the fields of textile and clothing.

[0014] Through the above technical solution, by compounding the existing anionic ultraviolet absorber, aromatic-anionic ultraviolet absorber, and reactive ultraviolet absorber of N,N-diphenyl oxamide, and then mixing them with polyester fabric, dye, and water in the same bath, the polyester fabric can have good anti-ultraviolet performance. The anti-ultraviolet polyester fabric prepared by the method provided by the present invention can improve the anti-ultraviolet effect from level 3 - 4 of the original fabric to level 5. At the same time, compared with the original fabric, the color change of the anti-ultraviolet polyester fabric provided by the present invention is smaller, and there is no need for color adjustment in the follow-up, thereby reducing the production cost. Specific Embodiments

[0015] The following details the specific embodiments of the present invention. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0016] As described above, the present invention provides a preparation method of an anti-ultraviolet polyester fabric. The preparation method includes mixing the composition for absorbing ultraviolet rays with polyester fabric, dye, and water in the same bath, and then performing reduction cleaning, hot water washing, and drying to obtain the anti-ultraviolet polyester fabric; wherein, the composition is compounded by an anionic ultraviolet absorber, an aromatic-anionic ultraviolet absorber, a reactive ultraviolet absorber of N,N-diphenyl oxamide, and a solvent.

[0017] The inventors of the present application accidentally discovered that by compounding existing anionic ultraviolet absorbers, aromatic-anionic ultraviolet absorbers, and reactive ultraviolet absorbers of N,N-diphenyl oxamide, and then mixing them with polyester fabrics, dyes, and water in a same bath, the polyester fabrics can have good ultraviolet resistance. Specifically, for the ultraviolet-resistant polyester fabrics prepared by the method provided by the present invention, the ultraviolet resistance effect can be improved from level 3-4 of the original fabric to level 5. At the same time, compared with the original fabric, the color change of the ultraviolet-resistant polyester fabric provided by the present invention is smaller, and there is no need to adjust the color subsequently, thereby reducing the production cost.

[0018] In the present invention, the role of the solvent is to dissolve anionic ultraviolet absorbers, aromatic-anionic ultraviolet absorbers, and reactive ultraviolet absorbers of N,N-diphenyl oxamide, so as to compound and form a stable solution, and the solvent can specifically be selected as water.

[0019] In the present invention, the anionic ultraviolet absorber can be, for example, a sulfonic acid type anionic ultraviolet absorber or a phenolic type anionic ultraviolet absorber; the sulfonic acid type anionic ultraviolet absorber can be, for example, 2-phenylbenzimidazole-5-sulfonic acid, 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid (benzophenone-4), 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid-sodium salt (benzophenone-5), 2,2'-dihydroxy-4,4'-dimethoxybenzophenone-3,3'-disulfonic acid disodium salt (benzophenone-9).

[0020] The phenolic type anionic ultraviolet absorber can be, for example, 2,4-dihydroxybenzophenone (benzophenone-1), 2,2'-4,4'-tetrahydroxybenzophenone (benzophenone-2), 2-hydroxy-4-methoxybenzophenone (benzophenone-3), 2,2'-dihydroxy-4,4'-dimethoxybenzophenone (benzophenone-6), 5-chloro-2-hydroxybenzophenone (benzophenone-7), 2,2'-dihydroxy-4-methoxybenzophenone (benzophenone-8), 2-hydroxy-4-methoxy-4'-methylbenzophenone (benzophenone-10), 2-hydroxy-4-octoxybenzophenone (benzophenone-12), monomenthyl salicylate (homosalate), 2-ethylhexyl salicylate (octyl salicylate).

[0021] In the present invention, the aromatic-anionic ultraviolet absorber can be, for example, benzophenone derivatives or benzotriazole derivatives; among them, the benzophenone derivatives can be, for example, benzophenone-4 (ultraviolet absorber BP-4), benzophenone-5 (ultraviolet absorber BP-5); the benzotriazole derivatives can be, for example, sulfonated benzotriazole (such as Tinuvin HS series).

[0022] In the present invention, the anionic ultraviolet absorber, the aromatic-anionic ultraviolet absorber, and the reactive ultraviolet absorber of N,N-diphenylglyoxamide can be compounded in any suitable form. In some embodiments of the present invention, the specific compounding steps may be as follows: First, mix and stir the aromatic-anionic ultraviolet absorber with water, then add the anionic ultraviolet absorber and the reactive ultraviolet absorber of N,N-diphenylglyoxamide, and stir and mix at room temperature. The stirring rate is 100-200 r / min, and the stirring time is 5-10 min.

[0023] In the present invention, the amounts of the composition, the dye, and the water can be selected within a relatively wide range. In some embodiments of the present invention, the amount of the composition is 2-4 o.w.f%, for example, it can be 2 o.w.f%, 2.5 o.w.f%, 3 o.w.f%, 3.5 o.w.f%, 4 o.w.f%. The amount of the dye is 3-5 o.w.f%, for example, it can be 3 o.w.f%, 3.5 o.w.f%, 4 o.w.f%, 4.5 o.w.f%, 5 o.w.f%. The bath ratio of the water is 1:10-15, for example, it can be 1:10, 1:11, 1:12, 1:13, 1:14, 1:15.

[0024] In the present invention, the conditions for the combined bath include: the temperature is 120-140 °C, and the time is 50-70 min.

[0025] In some embodiments of the present invention, the composition is compounded from the following raw materials by weight percentage: 30-35% by weight of an anionic ultraviolet absorber, 10-20% by weight of an aromatic-anionic ultraviolet absorber, 10-20% by weight of a reactive ultraviolet absorber of N,N-diphenylglyoxamide, and the rest is a solvent.

[0026] In the present invention, the dye is a disperse dye. It should be noted that disperse dyes are a type of non-ionic dyes with extremely low water solubility. Their particles are uniformly suspended in the dye liquor by a dispersant during the dyeing process and penetrate into the fiber interior under high temperature or high pressure conditions to achieve coloring. Disperse dyes can be classified into azo disperse dyes, anthraquinone disperse dyes, nitro diphenylamines, styrene type (heterocyclic type), and other new types of disperse dyes according to different chemical structures.

[0027] In the present invention, the conditions for the reduction cleaning include: performing reduction cleaning in a cleaning solution containing sodium dithionite and sodium carbonate for 15-20 min; wherein, the mass concentration of sodium dithionite is 2-4 g / L, the mass concentration of sodium carbonate is 0.5-2 g / L, and the temperature of the cleaning solution is 80-85 °C.

[0028] In the present invention, the conditions for hot water washing include: the hot water washing temperature is 90 - 95°C, and the time is 10 - 20 min.

[0029] In the present invention, the conditions for drying include: the temperature is 60 - 70°C.

[0030] The following further illustrates the preparation method of the anti-ultraviolet polyester fabric provided by the present invention through specific examples.

[0031] For the anti-ultraviolet polyester fabric provided in the embodiment of the present invention, the following methods are used to detect various properties.

[0032] 1. Test of K / S value

[0033] Using a Datacolor 800 spectrophotometer, under the D65 light source, with a 10° standard observer, measure three different positions of the sample in the spectral range of 380 - 720 nm to obtain the average value of the K / S value, and evaluate the dyeing build-up ability based on this.

[0034] The K / S value of the dyed fabric refers to the ratio of the absorption coefficient K to the scattering coefficient S calculated by the Kubelka - Munk equation, and is used to evaluate the color depth of the dyed fabric. The larger the K / S value, the darker the fabric color; conversely, the smaller the K / S value, the lighter the color.

[0035] 2. Test of anti-ultraviolet performance

[0036] Test method: Light source: Xenon arc light source.

[0037] Test environmental conditions: (23 ± 2)°C, (50 ± 5)% RH.

[0038] Description of the test method: Test cycle: Irradiance: 1.25 W / (m 2 ·nm) @ 420 nm; Continuous light exposure: Black standard temperature: (100 ± 2)°C, Relative humidity: (50 ± 5)%; Filter: Boro / Soda Lime; Exposure time: 330 hours.

[0039] 3. Light fastness to sunlight

[0040] According to GB / T 8427 - 2019 "Textiles - Tests for colour fastness - Colour fastness to artificial light: Xenon arc", the gray scale grade of the dyed sample is measured, and this is used as the light fastness to sunlight.

[0041] 4. Gray scale grade test

[0042] According to GB / T 250 - 2008 "Textiles - Tests for colour fastness", the gray scale grade is evaluated under the standard light source D65.

[0043] Sources of raw materials used in the examples and comparative examples of the present invention:

[0044] Polyester fabric: Gram weight: 140 gsm, specification: 20D*20D, purchased from Hangzhou Louling Trading Co., Ltd.;

[0045] Disperse dye: Black FAL 167, purchased from Haining Lvyu Textile Technology Co., Ltd.;

[0046] Ultraviolet absorber: 2-phenylbenzimidazole-5-sulfonic acid; CAS No.: 27503-81-7, purchased commercially;

[0047] Benzophenone-4 (BP-4), purchased commercially;

[0048] Reactive ultraviolet absorber of N,N-diphenylglyoxamide, purchased from Archroma Chemicals (China) Co., Ltd.

[0049] Example 1

[0050] This example provides a preparation method of an anti-ultraviolet polyester fabric, and the specific steps are as follows:

[0051] (1) A composition is prepared by compounding 2-phenylbenzimidazole-5-sulfonic acid: 32% by weight, benzophenone-4: 15% by weight, reactive ultraviolet absorber of N,N-diphenylglyoxamide: 15% by weight, and water: 38% by weight;

[0052] (2) The composition formed by the above compounding, disperse dye (Black FAL 167), water and polyester fabric are added into a dyeing vat. The dosage of the composition is 3% o.w.f; the dosage of the disperse dye is 3% o.w.f; the bath ratio of water is 1:10; the polyester fabric is 10 g;

[0053] (3) Heat up to 130 °C at a rate of 2 °C / min and keep warm for 60 min;

[0054] (4) The polyester fabric is reductively cleaned in a cleaning solution containing sodium dithionite and sodium carbonate for 15 min; wherein, the mass concentration of the sodium dithionite is 3 g / L, the mass concentration of the sodium carbonate is 1 g / L, and the temperature of the cleaning solution is 80 °C;

[0055] (5) After hot water washing and drying, an anti-ultraviolet polyester fabric is obtained.

[0056] Example 2

[0057] The preparation method of the anti-ultraviolet polyester fabric in this example is basically the same as that in Example 1. The difference is that the composition is compounded from the following raw materials by weight percentage: 2-phenylbenzimidazole-5-sulfonic acid: 30% by weight, benzophenone-4: 10% by weight, a reactive ultraviolet absorber of N,N-diphenylglyoxylamide: 10% by weight, and water: 50% by weight. With other conditions unchanged, the anti-ultraviolet polyester fabric is obtained by treating the polyester fabric.

[0058] Example 3

[0059] The preparation method of the anti-ultraviolet polyester fabric in this example is basically the same as that in Example 1. The difference is that the composition is compounded from the following raw materials by weight percentage: 2-phenylbenzimidazole-5-sulfonic acid: 35% by weight, benzophenone-4: 20% by weight, a reactive ultraviolet absorber of N,N-diphenylglyoxylamide: 20% by weight, and water: 25% by weight. With other conditions unchanged, the anti-ultraviolet polyester fabric is obtained by treating the polyester fabric.

[0060] Example 4

[0061] The preparation method of the anti-ultraviolet polyester fabric in this example is basically the same as that in Example 1. The difference is that

[0062] in step (2), the dosage of the composition is 4 o.w.f%; with other conditions unchanged, the anti-ultraviolet polyester fabric is obtained by treating the polyester fabric.

[0063] Comparative Example 1

[0064] This comparative example provides a method for treating a polyester fabric, and the specific steps are as follows:

[0065] (1) Add the polyester fabric, disperse dye and water into a dyeing vat, where the polyester fabric is 10 g, the dosage of the disperse dye is 3 o.w.f%, and the bath ratio of water is 1:10;

[0066] (2) Heat up to 130 °C at a rate of 2 °C / min and keep warm for 60 min;

[0067] (3) Reduce and wash the polyester fabric in a cleaning solution containing sodium dithionite and sodium carbonate for 15 min; wherein, the mass concentration of the sodium dithionite is 3 g / L, the mass concentration of the sodium carbonate is 1 g / L, and the temperature of the cleaning solution is 80 °C;

[0068] (4) After hot washing and drying, the treated polyester fabric is obtained.

[0069] Comparative Example 2

[0070] This comparative example is basically the same as the preparation method of the anti-ultraviolet polyester fabric in Example 1. The difference is that the composition is compounded from the following raw materials by weight percentage: 2-phenylbenzimidazole-5-sulfonic acid: 32% by weight, benzophenone-4: 15% by weight, and water 53% by weight.

[0071] Under the condition that the remaining conditions remain unchanged, the polyester fabric is treated to obtain an anti-ultraviolet polyester fabric.

[0072] Comparative Example 3

[0073] This comparative example is basically the same as the preparation method of the anti-ultraviolet polyester fabric in Example 1. The difference is that the composition is compounded from the following raw materials by weight percentage: 2-phenylbenzimidazole-5-sulfonic acid: 35% by weight, a reactive ultraviolet absorber of N,N-diphenylglyoxylamide: 20% by weight, and water 45% by weight.

[0074] Under the condition that the remaining conditions remain unchanged, the polyester fabric is treated to obtain an anti-ultraviolet polyester fabric.

[0075] The polyester fabrics obtained in the above examples and comparative examples were tested, and the test results are shown in Table 1 and Table 2 below.

[0076] Table 1 Test results of anti-ultraviolet performance

[0077]

[0078]

[0079] Table 2 Test results of color change

[0080]

[0081] Combining the data in Table 1 and Table 2, it can be seen that for the anti-ultraviolet polyester fabric prepared by the method provided by the present invention, the light fastness level has been greatly improved. Especially for the anti-ultraviolet polyester fabric in Example 1, its light fastness level reaches 5, which is one and a half levels higher than the 3-4 levels of the ordinary polyester fabric in Comparative Example 1.

[0082] On the other hand, the present invention provides an anti-ultraviolet polyester fabric prepared according to the above preparation method.

[0083] On still another aspect, the present invention provides an application of the above anti-ultraviolet polyester fabric in the fields of textile and clothing.

[0084] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited thereto. Within the technical concept scope of the present invention, various simple modifications can be made to the technical solutions of the present invention. To avoid unnecessary repetition, the present invention will not separately describe various possible combinations. But these simple modifications and combinations should also be regarded as the content disclosed by the present invention and all fall within the protection scope of the present invention.

Claims

1. A preparation method of an anti-ultraviolet polyester fabric, characterized in that The preparation method includes mixing the composition for absorbing ultraviolet rays with polyester fabric, dye and water in the same bath, and then performing reduction cleaning, hot water washing and drying to obtain the anti-ultraviolet polyester fabric; Among them, the composition is prepared by compounding an anionic ultraviolet absorber, an aromatic-anionic ultraviolet absorber, a reactive ultraviolet absorber of N,N-diphenyl oxamide and a solvent.

2. The preparation method according to claim 1, characterized in that, The dosage of the composition is 2-4 o.w.f%, the dosage of the dye is 3-5 o.w.f%, and the bath ratio of the water is 1:10-15.

3. The preparation method according to claim 1, characterized in that, The conditions for the same-bath mixing include: the temperature is 120-140 °C and the time is 50-70 min.

4. The preparation method according to claim 1, characterized in that, The composition is prepared by compounding the following raw materials in weight percentages: 30-35% by weight of an anionic ultraviolet absorber, 10-20% by weight of an aromatic-anionic ultraviolet absorber, 10-20% by weight of a reactive ultraviolet absorber of N,N-diphenyl oxamide, and the rest is a solvent.

5. The preparation method according to claim 1, wherein The dye is a disperse dye.

6. The preparation method according to claim 1, wherein, The conditions for the reduction cleaning include: performing reduction cleaning in a cleaning solution containing sodium dithionite and sodium carbonate for 15-20 min; Among them, the mass concentration of the sodium dithionite is 2-4 g / L, the mass concentration of the sodium carbonate is 0.5-2 g / L, and the temperature of the cleaning solution is 80-85 °C.

7. The preparation method according to claim 1, characterized in that The conditions for the hot water washing include: the hot water washing temperature is 90-95 °C and the time is 10-20 min.

8. The preparation method according to claim 1, characterized in that, The conditions for the drying include: the temperature is 60-70 °C.

9. An anti-ultraviolet polyester fabric prepared by the preparation method according to any one of claims 1-8.

10. Application of the anti-ultraviolet polyester fabric according to claim 9 in the fields of textile and clothing.

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