Environment-friendly curtain fabric and preparation method thereof

Abstract

The application discloses an environment-friendly curtain fabric and a preparation method thereof. The environment-friendly curtain fabric comprises a fabric base layer and a surface functional layer, and the surface functional layer is obtained by growing a metal organic framework on the surface of the fabric base layer. The fabric base layer comprises the following components in parts by weight: 70-82 parts of polyester fiber, 9-15 parts of cotton fiber and 9-15 parts of hemp fiber. The environment-friendly curtain fabric prepared by the application has good wrinkle resistance, wear resistance and air permeability, and can absorb and degrade formaldehyde in the air and purify indoor air.

Description

TECHNICAL FIELD

[0001] The application relates to the field of curtain cloth, in particular to an environment-friendly curtain cloth and a preparation method thereof. BACKGROUND

[0002] In the process of interior decoration, formaldehyde is often used to synthesize urea-formaldehyde resin adhesive with urea to bond various materials due to its low price and good antiseptic and curing properties. However, the adhesive releases formaldehyde in the natural environment, which leads to excessive indoor formaldehyde and affects human health.

[0003] Curtain cloth is a commonly used indoor decoration material, which is often used for sun-shading, heat-insulating and indoor light adjusting. However, no curtain with good formaldehyde adsorption effect is found on the market at present, so it is of good market prospect to develop an environment-friendly curtain with good formaldehyde adsorption effect. SUMMARY

[0004] In order to obtain a curtain with good formaldehyde adsorption effect, the application provides an environment-friendly curtain cloth and a preparation method thereof.

[0005] In a first aspect, an environment-friendly curtain cloth comprises a cloth base layer and a surface functional layer, wherein the surface functional layer is obtained by growing a metal organic framework on the surface of the cloth base layer, and the cloth base layer comprises the following components in parts by weight: 70-82 parts of polyester fiber, 9-15 parts of cotton fiber and 9-15 parts of hemp fiber.

[0006] By using the above technical scheme, the metal organic framework is a kind of metal-organic material with adjustable pore size, which is self-assembled by organic ligand and metal. The metal organic framework has the characteristics of large specific surface area and high porosity, and has good effect on gas adsorption and catalytic reaction. The surface functional layer is obtained by growing the metal organic framework on the surface of the cloth base layer, so that the environment-friendly curtain cloth can efficiently adsorb formaldehyde. In addition, the selection of metal elements and organic ligands can improve the formaldehyde adsorption and catalytic decomposition capacity of the environment-friendly curtain cloth.

[0007] The cloth base layer is obtained by mixing polyester fiber, cotton fiber and hemp fiber. The cloth base layer has the acid and alkali resistance, wrinkle resistance and wear resistance of polyester fiber, and has the air permeability and texture of cotton and hemp fibers. In addition, the surface hydrophobicity of polyester fiber is strong, and the surface activity can be improved after mixing with cotton and hemp fibers, so that the growth effect of the metal organic framework on the surface of the cloth base layer is improved, and the formaldehyde adsorption and catalytic decomposition effect is improved.

[0008] Typically but not limitedly, the metal center in the metal organic framework is a metal having an oxide with formaldehyde catalytic effect, such as copper, silver, zinc, platinum, manganese, iron, cobalt, cerium and the like.

[0009] Preferably, the metal organic framework comprises the following components by weight: 2.9-6.5 parts of silver nitrate, 1-2 parts of 2-amino terephthalic acid.

[0010] By adopting the above technical solution, the metal center of the metal organic framework adopts silver elements, so that the metal organic framework has the ability of photocatalysis and catalytic oxidation degradation of formaldehyde, and in the form of the metal organic framework, the metal organic framework can amplify the effect of photocatalytic degradation of formaldehyde by using the large specific surface area, size effect and molecular sieve effect of the metal organic framework. In addition, silver ions have a certain antibacterial effect, and in the process of catalytic degradation of formaldehyde, active oxygen free radicals will be formed on the surface of the cloth base layer, and the active oxygen can also kill microorganisms, thereby reducing the breeding of microorganisms on the surface of the cloth base layer and improving the service life and continuous absorption of formaldehyde of the curtain cloth.

[0011] The organic ligand of the metal organic framework adopts 2-amino terephthalic acid, on the one hand, by optimizing the ratio of 2-amino terephthalic acid and silver nitrate, the pore size of the metal organic framework grown on the surface of the cloth base layer has substrate selectivity for formaldehyde, thereby improving the effect of catalytic degradation of formaldehyde; on the other hand, in the process of photocatalysis or catalytic oxidation, 2-amino terephthalic acid will derive terephthalic acid with bactericidal effect, which cooperates with metal ions to improve the antibacterial effect. In addition, the photocatalytic ability of the metal organic framework, as well as the light scattering and diffusion generated on the surface, can reduce the penetration of ultraviolet light and utilize ultraviolet light for catalysis, reduce the ultraviolet aging of polyester materials, and prolong the service life of the curtain cloth.

[0012] Preferably, the metal organic framework comprises the following components by weight: 2.9-6.5 parts of silver nitrate, 1.2-2.8 parts of zinc chloride, and 1-2 parts of 2-amino terephthalic acid.

[0013] By adopting the above technical solution, zinc elements are selected as the second metal center, on the one hand, zinc elements and silver elements cooperate, the electron transfer between metal components can produce a synergistic effect, and the response range of visible light of the metal organic framework can be improved, thereby improving the effect of the environment-friendly curtain cloth on degrading formaldehyde; in addition, the metal organic framework can reduce the agglomeration effect of zinc oxide particles, and through the charge transfer effect and substrate adsorption effect of the metal organic framework, the aggregation of substrates on the active surface of the catalyst is improved, thereby improving the capture ability of zinc ions for substrates and improving the photocatalytic degradation effect of the curtain cloth. On the other hand, zinc ions have a large cytotoxicity to microorganisms, and cooperate with silver ions to improve the bactericidal effect. The silver-zinc bimetallic organic framework has better stability than the single-metal organic framework, and the association / dissociation rate of metal ions and organic ligands is further improved, which can reduce the too fast dissociation speed of the single-metal organic framework, thereby reducing the "collapse" of the metal organic framework and improving the effect and time of the curtain cloth on degrading formaldehyde.

[0014] Preferably, the metal organic framework comprises the following components by weight: 2.9-6.5 parts of silver nitrate, 1.2-2.8 parts of zinc chloride, 1-2 parts of 2-amino terephthalic acid, and 0.2-0.4 parts of a surfactant.

[0015] By using the above technical solution, in the process of growing the metal organic framework on the surface of the cloth base layer, the surfactant can be adsorbed on the surface of the growing metal organic framework crystal, hindering the further growth and agglomeration of the crystal, reducing the average particle size of the metal organic framework and improving its dispersibility, thereby improving the bonding effect of the surface functional layer and the cloth base layer and improving the effect of degrading formaldehyde and the antibacterial effect of the curtain cloth.

[0016] Preferably, the surfactant is one of polyvinylpyrrolidone, sodium dodecyl sulfate, sodium dodecyl benzene sulfonate, or cetyl trimethyl ammonium bromide.

[0017] By using the above technical solution, the above surfactants can all better improve the average particle size of the metal organic framework crystal and the dispersing effect of the metal organic framework crystal on the surface of the cloth base layer, thereby improving the effect of degrading formaldehyde and the antibacterial effect of the curtain cloth.

[0018] Preferably, the components of the cloth base layer further comprise silk fibers, and the weight ratio of the silk fibers to the polyester fibers is (1-6):(70-82).

[0019] By using the above technical solution, the raw material of the cloth base layer further contains silk fibers, which can improve the air permeability of the cloth base layer and improve the gas passing rate in the curtain cloth when air flows, thereby strengthening the capturing effect of the surface functional layer on formaldehyde in the air. In addition, since silk fibers are protein fibers, they are prone to breed microorganisms and are prone to decomposition and yellowing under ultraviolet irradiation, so it is generally necessary to add a protective layer to the silk material. However, in the present application, a blending process is adopted, and after the surface functional layer is grown on the surface of the cloth base layer, the damage of ultraviolet to the cloth base layer can be reduced and the antibacterial property can be greatly improved, so that a curtain cloth with excellent antibacterial property and excellent formaldehyde degradation effect can be obtained without additional coating of a protective layer.

[0020] Preferably, the weight ratio of the silk fibers to the polyester fibers is (2-3):(70-82).

[0021] By using the above technical solution, the amount of silk fibers added in the raw material is further optimized, and the curtain cloth prepared has more excellent antibacterial and formaldehyde degradation effects.

[0022] In a second aspect, a preparation method of an environmentally friendly curtain cloth is provided, and the method comprises the following steps:

[0023] Preparation of the fabric base layer: blend polyester fibers, cotton fibers, hemp fibers or silk fibers to obtain a blended fabric;

[0024] Growth of the metal organic framework: immerse the blended fabric in a solution containing metal organic framework raw materials, and perform hydrothermal reaction at 120-140°C for 8-16h, then take out, wash and dry to obtain the environmentally friendly curtain fabric.

[0025] By using the above technical solution, the blended fabric is immersed in a solution containing metal organic framework raw materials for hydrothermal reaction, so that the metal organic framework is deposited on the surface of the blended fabric and is bonded with the fibers in the blended fabric. In addition, by adjusting the process parameters, the growth density and dispersion uniformity of the metal organic framework crystals on the surface of the fabric base layer, and the bonding strength of the surface functional layer and the fabric base layer are adjusted, thereby improving the formaldehyde degradation capacity and antibacterial effect of the curtain fabric.

[0026] Preferably, the blended fabric is further subjected to carboxymethylation treatment, and the raw materials used in the carboxymethylation treatment include the following components by weight: 4-8 parts of blended fabric, 120-140 parts of isopropyl alcohol, 80-90 parts of water, and 10-16 parts of chloroacetic acid.

[0027] By using the above technical solution, since the blended fabric is mainly polyester, the surface activity of polyester fibers is not high, and there are fewer active groups on the surface of polyester fibers, which makes it difficult to adsorb metal ions well, thereby easily affecting the growth of the metal organic framework on the surface of the blended fabric. Metal ions are also easy to dissociate and precipitate, causing the metal organic framework to "collapse", thereby causing the surface functional layer to fail. By carboxymethylizing the blended fabric, the content of carboxyl groups on the surface of the blended fabric is increased, and the surface activity is improved, thereby improving the adsorption of the fabric base layer, inducing more metal ions and organic ligands to form complexes on the surface of the fabric base layer, and improving the fixation rate of the metal organic framework on the surface of the blended fabric, thereby improving the formaldehyde degradation effect and antibacterial effect of the curtain fabric.

[0028] Preferably, the following steps are used for preparation:

[0029] Preparation of the fabric base layer: blend polyester fibers, cotton fibers, hemp fibers or silk fibers to obtain a blended fabric;

[0030] Carboxymethylation treatment: mix isopropyl alcohol, water and chloroacetic acid to obtain a modified solution, immerse the blended fabric in the modified solution for 60-90min, then take out, wash and dry to obtain a carboxymethylated blended fabric;

[0031] Growth of the metal organic framework: immerse the carboxymethylated blended fabric in a solution containing metal organic framework raw materials, and perform hydrothermal reaction at 120-140°C for 8-16h, then take out, wash and dry to obtain the environmentally friendly curtain fabric.

[0032] By adopting the technical scheme, the preparation process of the curtain fabric is optimized, especially the preparation process parameters of carboxymethylation, and the prepared curtain fabric has better formaldehyde degradation performance and antibacterial ability.

[0033] In summary, the present application has the following beneficial effects:

[0034] 1. By blending polyester fibers, cotton fibers, hemp fibers and silk fibers, a blended fabric with good air permeability and surface activity is obtained. By growing metal organic frameworks on the surface of the fabric base layer, a surface functional layer is obtained, which enables the curtain fabric to have the ability to catalyze the degradation of formaldehyde and good antibacterial performance.

[0035] 2. The blended fabric is treated by carboxymethylation, and then metal organic frameworks are grown, which improves the bonding strength of the fabric base layer and the surface functional layer, and improves the formaldehyde absorption and degradation ability of the curtain fabric, as well as the antibacterial effect of the curtain fabric. DETAILED DESCRIPTION

[0036] The raw materials used in the examples and preparation examples can be obtained by commercial purchase as described in detail below. The present application will be further described in detail below in combination with the examples. EXAMPLE

[0037] Example 1, an environmentally friendly curtain fabric, is prepared by the following steps:

[0038] Preparation of fabric base layer: 76g of polyester fiber, 12g of cotton fiber, 12g of hemp fiber and 2.5g of silk fiber are blended to obtain a blended fabric;

[0039] Carboxymethylation treatment: 130g of isopropyl alcohol, 85g of water and 13g of chloroacetic acid are mixed to obtain a modified solution. 6g of blended fabric is immersed in the modified solution for 75min, then taken out, washed with deionized water and dried in an oven at 60℃ to obtain carboxymethylated blended fabric;

[0040] Growth of metal organic framework: the carboxymethylated blended fabric is immersed in a solution containing metal organic framework raw materials, with a water bath ratio of 1:50, 130℃ hydrothermal reaction for 12h, then taken out, washed and dried to obtain an environmentally friendly curtain fabric.

[0041] The metal organic framework raw material solution is prepared by the following steps:

[0042] 4.7g of silver nitrate, 2g of zinc chloride, 0.3g of polyvinylpyrrolidone and 1.5g of 2-amino terephthalic acid are dissolved in 100mL of ethanol solution (V 乙醇 :V 水 =1:1) to obtain a metal organic framework raw material solution.

[0043] Example 2, an environmentally friendly curtain fabric, is prepared by the following steps:

[0044] Preparation of the fabric base layer: 82 g of polyester fiber, 15 g of cotton fiber, 15 g of hemp fiber and 3 g of real silk fiber are blended to obtain a blended fabric;

[0045] Carboxymethylation treatment: 140 g of isopropyl alcohol, 90 g of water and 16 g of chloroacetic acid are mixed to obtain a modification solution, 8 g of the blended fabric is immersed in the modification solution for 90 min, then taken out, washed with deionized water, and dried in an oven at 60°C to obtain a carboxymethylated blended fabric;

[0046] Growth of metal organic framework: the carboxymethylated blended fabric is immersed in a solution containing metal organic framework raw materials, with a water bath ratio of 1:50, hydrothermal reaction at 120°C for 16 h, washed and dried to obtain the environmentally friendly curtain fabric.

[0047] The metal organic framework raw material solution is prepared by the following steps:

[0048] 6.5 g of silver nitrate, 1.2 g of zinc chloride, 0.4 g of polyvinylpyrrolidone and 2 g of 2-amino terephthalic acid are dissolved in 100 mL of ethanol solution (V 乙醇 :V 水 =1:1) to obtain the metal organic framework raw material solution.

[0049] Example 3, an environmentally friendly curtain fabric, is prepared by the following steps:

[0050] Preparation of the fabric base layer: 70 g of polyester fiber, 9 g of cotton fiber, 9 g of hemp fiber and 2 g of real silk fiber are blended to obtain a blended fabric;

[0051] Carboxymethylation treatment: 120 g of isopropyl alcohol, 80 g of water and 10 g of chloroacetic acid are mixed to obtain a modification solution, 4 g of the blended fabric is immersed in the modification solution for 60 min, then taken out, washed with deionized water, and dried in an oven at 60°C to obtain a carboxymethylated blended fabric;

[0052] Growth of metal organic framework: the carboxymethylated blended fabric is immersed in a solution containing metal organic framework raw materials, with a water bath ratio of 1:50, hydrothermal reaction at 140°C for 8 h, washed and dried to obtain the environmentally friendly curtain fabric.

[0053] The metal organic framework raw material solution is prepared by the following steps:

[0054] 2.9 g of silver nitrate, 1.2 g of zinc chloride, 0.2 g of polyvinylpyrrolidone and 1 g of 2-amino terephthalic acid are dissolved in 100 mL of ethanol solution (V 乙醇 :V 水 =1:1) to obtain the metal organic framework raw material solution.

[0055] Example 4, an environmentally friendly curtain fabric, differs from Example 1 in that the metal organic framework raw material solution is prepared by the following steps:

[0056] Take 4.7 g of silver nitrate and 1.5 g of 2-amino terephthalic acid and dissolve them in 100 mL of an ethanol solution (V 乙醇 :V 水 = 1:1) to obtain a metal organic framework raw material solution.

[0057] Example 5, an environmentally friendly curtain fabric, differs from Example 1 in that the metal organic framework raw material solution is prepared by the following steps:

[0058] Take 4.7 g of silver nitrate, 2 g of zinc chloride, and 1.5 g of 2-amino terephthalic acid and dissolve them in 100 mL of an ethanol solution (V 乙醇 :V 水 = 1:1) to obtain a metal organic framework raw material solution.

[0059] Example 6, an environmentally friendly curtain fabric, differs from Example 1 in that the metal organic framework raw material solution is prepared by the following steps:

[0060] Take 4.7 g of silver nitrate, 0.2 g of polyvinylpyrrolidone, and 1.5 g of 2-amino terephthalic acid and dissolve them in 100 mL of an ethanol solution (V 乙醇 :V 水 = 1:1) to obtain a metal organic framework raw material solution.

[0061] Example 7: An environmentally friendly curtain fabric, differs from Example 1 in that the preparation steps of the fabric base layer are as follows: take 76 g of polyester fiber, 12 g of cotton fiber, and 12 g of hemp fiber and blend them to obtain a blended fabric.

[0062] Example 8, an environmentally friendly curtain fabric, differs from Example 2 in that the preparation steps of the fabric base layer are as follows:

[0063] Preparation of the fabric base layer: take 82 g of polyester fiber, 15 g of cotton fiber, 15 g of hemp fiber, and 6 g of silk fiber and blend them to obtain a blended fabric.

[0064] Example 9, an environmentally friendly curtain fabric, differs from Example 3 in that the preparation steps of the fabric base layer are as follows:

[0065] Preparation of the fabric base layer: take 70 g of polyester fiber, 9 g of cotton fiber, 9 g of hemp fiber, and 1 g of silk fiber and blend them to obtain a blended fabric.

[0066] Example 10, an environmentally friendly curtain fabric, differs from Example 4 in that,

[0067] Silver nitrate is replaced by equal amount of copper nitrate (i.e. metal center of metal organic framework is copper ion).

[0068] Example 11, an eco-friendly curtain fabric, differs from example 5 in that silver nitrate is replaced by equal amount of copper nitrate (i.e. metal center of metal organic framework is copper ion and zinc ion)

[0069] Example 12, an eco-friendly curtain fabric, differs from example 5 in that aluminum chloride is replaced by equal amount of copper nitrate (i.e. metal center of metal organic framework is silver ion and copper ion)

[0070] Example 13, an eco-friendly curtain fabric, is prepared by following steps:

[0071] Preparation of fabric base layer: take 76g polyester fiber, 12g cotton fiber, 12g hemp fiber and 2.5g silk fiber for blending to obtain blended fabric;

[0072] Growth of metal organic framework: take the blended fabric and immerse it in a solution containing metal organic framework raw material, with a water bath ratio of 1:50, hydrothermal reaction at 130°C for 12h, then take out, wash and dry to obtain the eco-friendly curtain fabric.

[0073] Preparation of metal organic framework raw material solution by following steps:

[0074] Take 4.7g silver nitrate, 2g zinc chloride, 0.3g polyvinylpyrrolidone and 1.5g 2- amino terephthalic acid and dissolve them in 100mL ethanol solution (V 乙醇 :V 水 =1:1) to obtain the metal organic framework raw material solution (i.e. without carboxymethylation treatment of blended fabric).

[0075] Comparative example

[0076] Comparative example 1, an eco-friendly curtain fabric, differs from example 1 in that cotton fiber and hemp fiber are both replaced by equal amount of polyester fiber.

[0077] Comparative example 2, an eco-friendly curtain fabric, is prepared by following steps:

[0078] 1 g Zn(Ac)2·2H2O was dissolved in 200 mL distilled water, then 3 mL NH3·H2O was added to obtain a white suspension, which was then transferred into a 250 mL round-bottom flask and heated in a 95 °C water bath for 9 h. The white precipitate was collected by centrifugation and washed with 50 mL water or 50 mL anhydrous ethanol alternately for 4 times, and then dried at 95 °C for 24 h to obtain rod-like zinc oxide. The length of the obtained rod-like zinc oxide was 2-3 μm, and the diameter was 200-400 nm. The weight loss in 900 °C was 2 wt% (thermogravimetric test was performed using a SDT-Q600 thermogravimetric analyzer from TA Instruments, with a heating rate of 10 °C / min, under N2 atmosphere), and the rod-like structure had good thermal stability, which was an excellent carrier for various inorganic nanoparticles. 1 mol Bi(NO3)3·5H2O and 1 mol KBr were dissolved in 250 mL ethylene glycol, respectively, and stirred at room temperature until homogeneous. Then, the rod-like zinc oxide (Bi(NO3)3·5H2O:rod-like zinc oxide = 0.1:15) was added, and the mixture was ultrasonicated at room temperature for 2 h. The mixture was then transferred into a high-pressure reaction kettle with a polytetrafluoroethylene liner, and the filling volume of the reaction kettle was 70%. The reaction kettle was placed in an electric thermostatic oven, and reacted at 150 °C for 16 h. The white precipitate was collected by centrifugation and washed with 50 mL water or 50 mL anhydrous ethanol alternately for 4 times, and then dried at 95 °C for 24 h to obtain rod-like zinc oxide / bromine bismuth oxide composite material. The specific surface area of the rod-like zinc oxide / bromine bismuth oxide composite material was 700 m2 / g, while the specific surface area of bismuth oxychloride without the addition of rod-like zinc oxide was 55 m2 / g. A certain amount of rod-like zinc oxide / bromine bismuth oxide composite material (mass ratio: polyester:rod-like zinc oxide:Bi(NO3)3·5H2O = 100:15:0.1) was added to 100 g polyester as a composite raw material, which was fed into a melt extruder, and then melt extruded, fiber formed, and fiber cooled to obtain functional synthetic fibers capable of removing formaldehyde (60 strands, i.e. 60 m of 1 g functional synthetic fibers).

[0079] Performance test

[0080] The curtain fabrics prepared in Examples 1-13 and Comparative Examples 1-2 were subjected to performance tests, and the average values were obtained from 4 parallel tests.

[0081] Test 1: The formaldehyde removal effect was determined according to QB / T 2761-2006 “Determination of Purification Effect of Indoor Air Purification Products”, and the action time was 24 h. Then, the formaldehyde removal rate was tested after 1 day, 1 month, and 3 months, respectively, and the results are shown in Table 1.

[0082] Test 2: According to GB / T 23763-2009 "Evaluation of Antibacterial Performance of Photocatalytic Antibacterial Materials and Products", the strain is Staphylococcus aureus, and the test time is also 1 day, one month, and 3 months. The results are shown in Table 1.

[0083] Table 1: Results of Examples 1-13, Comparative Examples 1-2

[0084]

[0085] In combination with Examples 1-3 and in combination with Comparative Example 2 and Table 1, it can be seen that the environmentally friendly curtain fabric of the present application has a higher formaldehyde removal rate and good antibacterial effect compared with the prior art. The reason is that: the present application adopts polyester, cotton, hemp and silk to prepare a blended fabric, and grows a metal organic framework on it. The metal organic framework adopts silver, which can photodegrade and oxidize formaldehyde, as the metal center. The metal organic framework also endows the curtain fabric with long-term antibacterial properties.

[0086] In combination with Examples 1-6, Examples 10-12 and in combination with Table 1, it can be seen that the selection of the metal organic framework raw material has a great influence on the formaldehyde degradation performance and antibacterial performance of the curtain fabric. The reason is that: the zinc element is selected as the second metal center. On the one hand, zinc and silver elements cooperate, the electron transfer between metal components can produce a synergistic effect, and can improve the response range of the metal organic framework to visible light, thereby improving the effect of the environmentally friendly curtain fabric on degrading formaldehyde. In addition, the metal organic framework can reduce the agglomeration effect of zinc oxide particles, and through the charge transfer effect and substrate adsorption effect of the metal organic framework, it improves the aggregation of the substrate on the active surface of the catalyst, thereby improving the capture ability of zinc ions to the substrate and improving the photocatalytic degradation effect of the curtain fabric. On the other hand, zinc ions have greater cytotoxicity to microorganisms, which improves the bactericidal effect in cooperation with silver ions. The silver-zinc bimetallic organic framework has better stability than the single metal organic framework, and the association / dissociation rate of metal ions and organic ligands is further improved, which can reduce the too fast dissociation rate of single metal organic framework, thereby reducing the "collapse" of the metal organic framework and improving the effect and time of the curtain fabric on degrading formaldehyde. The surfactant can be adsorbed on the surface of the growing metal organic framework crystals, hindering the further growth and agglomeration of the crystals, reducing the average particle size of the metal organic framework and improving its dispersity, thereby improving the binding effect of the surface functional layer and the fabric base layer

[0087] It can be seen from Examples 1-3, Examples 7-9, Comparative Example 1 and Table 1 that the raw materials and their proportions for preparing the blended fabric also have certain influences on the formaldehyde degradation performance and antibacterial performance of the curtain fabric, because: the use of silk fibers, cotton fibers and hemp fibers can improve the air permeability of the fabric base layer, increase the gas passing rate in the curtain fabric when the air flows, thereby strengthening the capture effect of the metal organic framework on formaldehyde in the air. At the same time, the multiple limit positions also improve the surface activity of the fabric base layer, allowing the metal organic framework to grow more uniformly on the surface and be more firmly combined, thereby improving the antibacterial performance and formaldehyde degradation performance of the curtain fabric.

[0088] The specific embodiments are merely illustrative of the present application, and are not intended to limit the present application. Those skilled in the art can make modifications to the embodiments without creative contribution after reading the present specification, and the 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 method of making an environmentally friendly window shade fabric, the method comprising: Preparation method of the environmental protection curtain fabric ​ Preparation of the cloth base layer: blending polyester fiber, cotton fiber, hemp fiber or silk fiber to obtain blended fabric; Carboxymethylation treatment: mixing isopropyl alcohol, water and chloroacetic acid to obtain a modified solution, immersing the blended fabric in the modified solution for 60-90 min, then taking out, washing and drying to obtain carboxymethylated blended fabric; Growth of metal organic framework: immersing the carboxymethylated blended fabric in a solution containing metal organic framework raw materials, hydrothermal reaction at 120-140℃ for 8-16 h, then taking out, washing and drying to obtain the environmental protection curtain fabric; The metal organic framework raw materials are composed of the following components by weight: 2.9-6.5 parts of silver nitrate, 1.2-2.8 parts of zinc chloride, 1-2 parts of 2-amino terephthalic acid, and 0.2-0.4 parts of surfactant; The surfactant is one of polyvinylpyrrolidone, sodium dodecyl sulfate, sodium dodecyl benzene sulfonate or cetyltrimethylammonium bromide; The cloth base layer comprises the following components by weight: 70-82 parts of polyester fiber, 9-15 parts of cotton fiber, and 9-15 parts of hemp fiber; the components of the cloth base layer further include silk fiber, and the weight ratio of the silk fiber to the polyester fiber is (2-3):(70-82); The raw materials used in the carboxymethylation treatment include the following components by weight: 4-8 parts of blended fabric, 120-140 parts of isopropyl alcohol, 80-90 parts of water, and 10-16 parts of chloroacetic acid.

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