Fabric antistatic modification method, modified fabric and cotton clothes

Abstract

The application relates to the field of clothing, and discloses a fabric antistatic modification method, modified fabric and cotton clothes, the modification method comprises the following steps: pre-foaming a modified treatment foaming liquid, spreading the foaming foam on the upper surface of the fabric, extracting the foaming foam under the fabric by negative pressure, and drying to obtain the modified fabric; the modified treatment foaming liquid comprises the following components in parts by weight: the modified treatment foaming liquid comprises the following components in parts by weight: 4.4-7.8 parts of an antistatic agent, the antistatic agent is stearyl dimethyl pentyl ammonium chloride or stearamidopropyl dimethyl-beta-hydroxyethyl ammonium dihydrogen phosphate; 100-140 parts of water; 0.73-1.72 parts of lecithin or derivatives thereof as foaming agent A; and 1.63-4.37 parts of a non-ionic surfactant as foaming agent B; the antistatic agent is quickly and stably loaded on the fabric under the condition of low water absorption, and then the fabric with low size change rate, no halo problem and long-term modification stability is obtained.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of clothing, in particular to a fabric antistatic modification method, modified fabric and cotton clothes. BACKGROUND

[0002] With the improvement of living conditions, people have put forward various demands for the performance of the fabric used in clothing, such as waterproof, anti-static, etc. Some methods have been developed to obtain modified fabric to meet these demands. At present, the modification of modified fabric has two directions: modification of the raw material of the fabric, i.e. the modification of the fiber, and modification of the formed fabric. The modification of the formed fabric has the advantages of rapid detection of the performance of the modified product, and quick conversion and investment after successful modification. The existing modification method of the formed fabric is: completely soaking the fabric in the treatment liquid to absorb the anti-static agent, then taking it out and drying to obtain the modified fabric; or pulling the formed fabric into the treatment liquid under tension, and forcing the treatment liquid to penetrate the formed fabric by rolling with a rubber roller, and then drying to obtain the modified fabric.

[0003] During the production process, the inventors of the present application found that whether it is an intermittent modification production by complete soaking absorption or a continuous production by pulling and rolling, the size of the fabric changes before and after treatment, and the fabric appears a color halo problem after treatment.

[0004] The change rate of the size change is generally 2.5-4.5%, and the change is non-uniform, with a gradual fluctuating change in the change rate in any direction along the fabric. The color halo problem is more serious in the continuous production by pulling and rolling than in the intermittent modification production by complete soaking absorption.

[0005] Through research and analysis, it is found that the size change and the color halo problem are both caused by the absorption of a large amount of treatment liquid by the fabric, i.e. a large amount of dehydration of the treatment liquid, different dehydration speeds during drying, different speeds of transformation of the fabric threads and fibers from swelling and disorder deformation after water absorption to ordered state of warp and weft after dehydration, different transformation speeds at different positions, and the size change fluctuation problem, and the color halo is caused by the diffusion of the color and luster of the fabric due to long-term contact with a large amount of treatment liquid.

[0006] The size change and the color halo problem have an adverse effect on the subsequent processing of the fabric, increase the waste of fabric edges and corners and the color difference of the fabric, and affect the quality of the color and luster of the fabric that passes the detection of color halo. SUMMARY

[0007] In order to reduce the influence of the fabric modification process on the size and color of the fabric, reduce the generation of waste and improve the quality of the product, the present application provides a fabric modification method, a modified fabric and clothing.

[0008] The first object of the present application is achieved by the following technical solution:

[0009] A fabric antistatic modification method, comprising the following steps:

[0010] Pre-foaming the modified treatment foaming liquid, and spreading the foaming foam on the upper surface of the unfolded fabric, and extracting the foaming foam above the fabric by negative pressure under the fabric;

[0011] After the foaming foam is extracted, drying the fabric at room temperature and under ventilation to obtain the modified fabric;

[0012] The modified treatment foaming liquid comprises the following ingredients by weight:

[0013] The modified treatment foaming liquid comprises the following ingredients by weight:

[0014] The antistatic agent is stearic dimethyl pentyl ammonium chloride or stearic amidopropyl dimethyl-β-hydroxyethyl ammonium dihydrogen phosphate, and the amount of the antistatic agent is 4.4-7.8 parts;

[0015] The amount of water is 100-140 parts;

[0016] The amount of foaming agent A is 0.73-1.72 parts, and the foaming agent A is lecithin or a derivative thereof;

[0017] The amount of foaming agent B is 1.63-4.37 parts, and the foaming agent B is a non-ionic surfactant.

[0018] By adopting the above technical solution, the modified treatment foaming liquid generates foam after foaming, and the foam penetrates the fabric under negative pressure; in the process of penetrating the fabric, the larger foam in the foam is broken into small foam, and the newly broken small foam and the original small foam can quickly infiltrate the fabric in the process of negative pressure migration;

[0019] In the process of migration of the small foam from the upper surface of the fabric to the lower surface of the fabric, the environmental air pressure decreases, the foam liquid bubble expands and becomes larger when penetrating in the gap between the fabric fibers, and at the same time, the foam liquid bubble tends to remain intact and not to be broken under the action of the liquid surface tension, thereby making the foam liquid bubble sufficiently contact the surface of the fabric fiber in the process of becoming larger and migrating, and forcing the liquid bubble liquid to invade the lines and gaps on the surface of the fiber monomer, so that the antistatic agent is quickly and temperaturely supported on the fiber monomer;

[0020] Compared with the liquid soaking method, there is no need to wait for the liquid to slowly penetrate into the lines and gaps on the surface of the fiber monomer to replace the original air, and the fabric has a small water absorption amount; compared with the roller pressing method, no excessive pressure is applied to the fabric, and the fabric color shading problem is avoided.

[0021] On the other hand, in order to make the antistatic agent in the modified treatment foaming liquid still uniformly dispersible in the foaming foam, and quickly and effectively penetrate and load on the surface of the fiber monomer when contacting the fabric fiber, the antistatic agent and the foaming agent of the modified treatment foaming liquid need to be specifically matched.

[0022] In the case of using stearic dimethyl pentyl ammonium chloride or stearic amidopropyl dimethyl-β-hydroxyethyl ammonium dihydrogen phosphate as the antistatic agent in the present application, the foaming agent is compounded with lecithin or its derivatives and non-ionic surfactants. The foaming agent components form an oil-water coating structure on the antistatic agent in water, so that the antistatic agent disperses in water to form charged microparticles, which can then penetrate the surface of the fiber monomer more quickly and be more stably adsorbed and combined when contacting the fiber, thereby promoting the stability of the antistatic agent and enhancing the antistatic performance, weather resistance and stability of the modified fabric.

[0023] Therefore, according to the above, the modified method of the present application can quickly and stably load the antistatic agent on the fabric under low water absorption, thereby obtaining a modified fabric with low size change rate, no halo problem, and stable and durable modification.

[0024] Optionally, the foaming agent A is hydrogenated lecithin.

[0025] By adopting the above technical solution, the hydrogenated lecithin has a better effect of promoting the stability of solid loading than lecithin.

[0026] Optionally, the foaming agent B is polyoxyethylene glycerol fatty acid ester or polyoxyethylene ether sorbitan fatty acid ester.

[0027] By adopting the above technical solution, the polyoxyethylene glycerol fatty acid ester or polyoxyethylene ether sorbitan fatty acid ester has a better effect of promoting the stability of solid loading.

[0028] Optionally, it further includes 2.44-8.40 parts of a penetrating agent, wherein the penetrating agent is C2-C4 polyhydric alcohol or low molecular weight polyol, and the low molecular weight polyol has a relative molecular weight of 600-1000.

[0029] By adopting the above technical solution, the C2-C4 polyhydric alcohol or low molecular weight polyol is rich in hydroxyl groups, which can adjust the viscosity of the modified treatment foaming liquid and the surface wettability of the modified treatment foaming liquid and the fabric fiber after being added to the modified treatment foaming liquid. The C2-C4 polyhydric alcohol or polyol with appropriate molecular weight can make the foaming foam more delicate, promote the penetration of the antistatic agent into the surface of the fiber monomer, increase the amount of the antistatic agent loaded on the fabric during the modification process, and improve the antistatic performance of the modified fabric.

[0030] Optionally, the penetrating agent is propylene glycol or polyethylene glycol 800.

[0031] By adopting the technical scheme, the antistatic performance of the modified fabric is improved.

[0032] Optionally, the foaming foam spreading density is 326-426±4 g / m 2 .

[0033] By adopting the technical scheme, the modification effect on the fabric is better, and the size change rate of the fabric is small.

[0034] The second application purpose of the application is realized by the following technical scheme:

[0035] An antistatic fabric is obtained by the modification method.

[0036] By adopting the technical scheme, the antistatic fabric has excellent, long-lasting antistatic performance, uniform fabric color, and good color development quality.

[0037] The third application purpose of the application is realized by the following technical scheme:

[0038] A cotton garment, wherein the outer fabric or the inner fabric of the cotton garment is the fabric.

[0039] By adopting the technical scheme, the outer fabric of the cotton garment has excellent, long-lasting antistatic performance, uniform fabric color, and good color development quality.

[0040] In summary, the application has at least the following beneficial effects:

[0041] 1. The modification method of the application enables the fabric to quickly and stably load antistatic agents under low water absorption, thereby obtaining a fabric with low size change rate, no halo problem, and stable and long-lasting modification.

[0042] 2. In the case of using stearic dimethyl amine chloride or stearic amide propyl dimethyl-β-hydroxyethyl ammonium dihydrogen phosphate as an antistatic agent for antistatic modification, the foaming agent is compounded with lecithin or its derivatives and non-ionic surfactants to form an oil-water coating structure in water, so that the antistatic agent is dispersed in water to form charged particles, which can then penetrate the surface of the fiber monomer and be more stably adsorbed when in contact with the fiber, thereby promoting the stability of the antistatic agent and enhancing the antistatic performance and stability of the modified fabric. DETAILED DESCRIPTION

[0043] Raw materials:

[0044] The antistatic agent uses stearic dimethyl amine chloride and stearic amide propyl dimethyl-β-hydroxyethyl ammonium dihydrogen phosphate.

[0045] Lecithin and hydrogenated lecithin were used in the following foaming agent A, which was purchased from Sunlight Chemical Trading (Shanghai) Co., Ltd.

[0046] Polyoxyethylene glycerol fatty acid ester or polyoxyethylene ether sorbitan fatty acid ester was used in the following foaming agent B, which was purchased from Sunlight Chemical Trading (Shanghai) Co., Ltd.

[0047] Polyethylene glycol 600, polyethylene glycol 800, polyethylene glycol 1000, polypropylene glycol 1000, glycerol, propylene glycol, and butanediol were used in the following penetrating agent, which were all commercially available products.

[0048] Preparation Example 1

[0049] A modified treatment foaming liquid, which is composed of the following ingredients:

[0050] Antistatic agent 5.6 kg,

[0051] Water 100 kg;

[0052] Foaming agent A 1.07 kg;

[0053] Foaming agent B 2.54 kg;

[0054] Penetrating agent 4 kg.

[0055] The antistatic agent is stearyl dimethyl pentyl ammonium chloride, which accounts for 4.95 wt% of the weight of the foaming liquid.

[0056] Foaming agent A is hydrogenated lecithin, and foaming agent B is polyoxyethylene glycerol fatty acid ester.

[0057] The penetrating agent is polyethylene glycol 800.

[0058] Example 1

[0059] An antistatic fabric is obtained by modifying the original fabric with a modified treatment foaming liquid.

[0060] The original fabric is cotton 6 fabric, with warp yarn diameter of 18±2 μm, weft yarn diameter of 15±2 μm, warp yarn weaving density of 280T (root / inch), weft yarn weaving density of 250T (root / inch), and fabric weight of 295±10 g / m 2 , dyed with yellow brown D3G.

[0061] The modified foaming liquid is from Preparation Example 1.

[0062] The modification method of the antistatic fabric is as follows,

[0063] S1: Pre-foaming the modified treatment foaming liquid with foaming ratio of 9.7; and spreading the fabric horizontally on the grid;

[0064] S2: Spread the pre-foamed foam on the upper surface of the spread fabric, the spreading density is 326±4g / m 2 ;

[0065] Spread the foam while sucking at the lower surface of the fabric with a vacuum degree of 1.28±0.02kPa, pull the foam through the fabric and partially defoam, the defoaming rate is 82±1%;

[0066] S3: After the foaming foam is extracted, dry the fabric at room temperature and under ventilation conditions to obtain an antistatic modified fabric.

[0067] Wherein the foaming multiple is the ratio of the volume after foaming to the volume before foaming.

[0068] Comparative Example 1

[0069] An antistatic fabric is obtained by modifying the original fabric, and the modification method is as follows:

[0070] The fabric is completely soaked in a 4.95wt% stearic acid dimethyl pentyl ammonium chloride aqueous solution, the amount of stearic acid dimethyl pentyl ammonium chloride aqueous solution satisfies completely immersing the fabric, and the fabric is taken out after soaking for 1h, drained and dried to obtain an antistatic fabric.

[0071] Comparative Example 2

[0072] An antistatic fabric is obtained by modifying the original fabric, and the modification method is as follows:

[0073] The fabric is completely soaked in a 4.95wt% stearic acid dimethyl pentyl ammonium chloride aqueous solution, the amount of stearic acid dimethyl pentyl ammonium chloride aqueous solution satisfies completely immersing the fabric, and the fabric is taken out after soaking for 4h, drained and dried to obtain an antistatic fabric.

[0074] Comparative Example 3

[0075] An antistatic fabric is obtained by modifying the original fabric, and the modification method is as follows:

[0076] The fabric is completely soaked in a 4.95wt% stearic acid dimethyl pentyl ammonium chloride aqueous solution, the amount of stearic acid dimethyl pentyl ammonium chloride aqueous solution satisfies completely immersing the fabric, and the fabric is taken out after soaking for 8h, drained and dried to obtain an antistatic fabric.

[0077] Comparative Example 4

[0078] An antistatic fabric is obtained by modifying the original fabric, and the modification method is as follows:

[0079] S1: The fabric was pulled out and pressed down by the driven roller to pass through the water tank containing 4.95wt% of stearic acid dimethyl pentyl ammonium chloride aqueous solution and was wetted;

[0080] S2: The wetted fabric was rolled by the double roller press, the rolling gap was 0.8 of the fabric thickness, and the rolling pressure was 0.4 MPa;

[0081] S3: The rolled fabric was unfolded and dried to obtain the antistatic fabric.

[0082] Comparative Example 5

[0083] An antistatic fabric was obtained by modifying the original fabric, and the modification method was as follows:

[0084] S1: The fabric was pulled out and pressed down by the driven roller to pass through the water tank containing 4.95wt% of stearic acid dimethyl pentyl ammonium chloride aqueous solution and was wetted;

[0085] S2: The wetted fabric was rolled by the double roller press, the rolling gap was 0.8 of the fabric thickness, and the rolling pressure was 0.6 MPa;

[0086] S3: The rolled fabric was unfolded and dried to obtain the antistatic fabric.

[0087] Comparative Example 6

[0088] An antistatic fabric was obtained by modifying the original fabric, and the modification method was as follows:

[0089] S1: The fabric was pulled out and pressed down by the driven roller to pass through the water tank containing 4.95wt% of stearic acid dimethyl pentyl ammonium chloride aqueous solution and was wetted;

[0090] S2: The wetted fabric was rolled by the double roller press, the rolling gap was 0.8 of the fabric thickness, and the rolling pressure was 0.8 MPa;

[0091] S3: The rolled fabric was unfolded and dried to obtain the antistatic fabric.

[0092] The antistatic performance, durable antistatic performance, fabric color without halo, and size change rate of the antistatic fabric of Example 1 and Comparative Examples 1-6 were detected, and the antistatic performance of the original fabric was detected, and the detection results are shown in Table 1.

[0093] The antistatic performance detection refers to the standard GBT 24249-2009 for the friction electrification voltage of the antistatic clean fabric. The smaller the friction electrification voltage, the better the antistatic performance.

[0094] The persistent antistatic property is measured after 25 times of washing according to the standard GBT 24249-2009 Washing and grading method for static property of antistatic clean fabric.

[0095] The halo condition is represented by the area ratio of the halo area to the fabric area (m 2 / m 2 ), and the severity of the halo problem is divided into no, less than 0.1, 0.1-0.19, 0.2-0.29, 0.3-0.39, and waste, and less than the area ratio of the next level is recorded in the next level.

[0096] Table 1. Fabric condition record table of original fabric, example 1, and comparative examples 1-6

[0097]

[0098] According to the antistatic property in Table 1, on the one hand, the antistatic property of the modified fabric of example 1, comparative example 2, comparative example 3, comparative example 6, and comparative example 8 is significantly improved compared with the original fabric, so that the antistatic agent used in the present application is effective for fabric modification.

[0099] On the other hand, according to comparative examples 1-3 and comparative examples 4-6, for the complete immersion modification method, the immersion time is a key factor affecting the initial antistatic property; for the modification method of applying pressure by roller pressing, the roller pressing pressure is a key factor affecting the initial antistatic property.

[0100] In the complete immersion modification method, the immersion time determines the penetration load and penetration stability of the modification liquid on the surface of the fiber monomer of the fabric. In comparative examples 1-3, the antistatic property of the modified fabric can be better reflected after immersion for not less than 4h.

[0101] At the same time, the modified fabric with immersion time less than 8h has a decay verification of antistatic property after 25 times of washing. In comparative example 1, the small amount of loaded antistatic agent is basically lost in the washing process, and only after immersion for 8h can it have good persistent antistatic property, but with the extension of immersion time, the halo problem of the modified fabric becomes more and more obvious, and the size change is more and more serious.

[0102] In the modified method of applying pressure by rolling, the rolling pressure makes the fabric fibers under pressure, and the surface of the fiber monomer expands or forms more cracks after being pressed, so that the antistatic agent can be loaded on the fiber monomer more quickly and more completely, thereby improving the fabric with less fabric treatment liquid absorption than the complete immersion modification method. As the rolling pressure increases, the initial antistatic performance and the long-lasting antistatic performance are improved, but the halo problem and the size change problem are more serious, and the halo problem is more serious than the complete immersion modification method when the rolling pressure reaches 0.6 MPa.

[0103] In Example 1 of the present application, the modified treatment foaming liquid is foamed to produce foam, and the foam penetrates the fabric under negative pressure. During the penetration of the fabric, the larger foam is broken into small foam, and the newly broken small foam and the original small foam quickly infiltrate the fabric. During the migration process, due to the decrease in environmental air pressure, the foam bubble expands and becomes larger, and under the action of liquid surface tension, the foam bubble tends to remain intact and not to break, thereby making the foam bubble larger and fully contacting the fabric fiber surface during the migration process, and forcing the bubble liquid to invade the texture and gap on the surface of the fiber monomer, so that the antistatic agent is quickly and temperaturely immobilized on the fiber monomer. The antistatic performance and the long-lasting antistatic performance of the modified fabric obtained by Example 1 are excellent, which exceeds Comparative Example 3 and Comparative Example 6, and the fabric has low water absorption and low size change rate during the modification process, and has no halo problem.

[0104] Preparation Example 2

[0105] A modified treatment foaming liquid, similar to Preparation Example 1, differs in that the antistatic agent used is stearamidopropyl dimethyl-β-hydroxyethyl ammonium dihydrogen phosphate.

[0106] Preparation Example 3

[0107] A modified treatment foaming liquid, similar to Preparation Example 1, differs in that the antistatic agent used is sodium polystyrene sulfonate.

[0108] Preparation Example 4

[0109] A modified treatment foaming liquid, similar to Preparation Example 1, differs in that a single polyoxyethylene glycerol fatty acid ester is used as a foaming agent instead of the original foaming agent A and foaming agent B. The amount of polyoxyethylene glycerol fatty acid ester is 3.61 kg.

[0110] Preparation Example 5

[0111] A modified treatment foaming liquid, similar to Preparation Example 1, differs in that a single hydrogenated lecithin is used as a foaming agent instead of the original foaming agent A and foaming agent B. The amount of hydrogenated lecithin is 3.61 kg.

[0112] Preparation Example 6

[0113] A modified foaming liquid, similar to Preparation Example 1, except that the original foaming agent A and foaming agent B were replaced by a single sodium dodecyl benzene sulfonate as the foaming agent. The amount of sodium dodecyl benzene sulfonate was 3.61 kg.

[0114] Example 2

[0115] An antistatic fabric, similar to Example 1, except that the modified foaming liquid came from Preparation Example 2.

[0116] Comparative Example 7

[0117] An antistatic fabric, similar to Example 1, except that the modified foaming liquid came from Preparation Example 3.

[0118] Comparative Example 8

[0119] An antistatic fabric, similar to Example 1, except that the modified foaming liquid came from Preparation Example 4.

[0120] Comparative Example 9

[0121] An antistatic fabric, similar to Example 1, except that the modified foaming liquid came from Preparation Example 5.

[0122] Comparative Example 10

[0123] An antistatic fabric, similar to Example 1, except that the modified foaming liquid came from Preparation Example 6.

[0124] The antistatic properties and fabric coloration of the antistatic fabrics of Example 2 and Comparative Examples 7-10 were detected, and the detection results are shown in Table 2.

[0125] Table 2. Fabric condition record table of Example 2 and Comparative Examples 7-10

[0126]

[0127] As can be seen from Tables 1 and 2, in Example 2, stearyl amidopropyl dimethyl-β-hydroxyethyl ammonium dihydrogen phosphate was used as a modifier, and there was no coloration and halo problem, and the modified fabric had similar antistatic properties, long-lasting antistatic properties, and dimensional change rate to Example 1, which were all better than Comparative Example 3 and Comparative Example 6, and were significantly improved compared to the original fabric.

[0128] As to Comparative Example 7, although there is no problem of color bleeding and size change, the antistatic property and the durable antistatic property are not as good as those of Comparative Example 1, and are similar to the original fabric property, and the loading amount of the antistatic agent on the fabric is small and unstable. The modified treatment foaming liquid of Preparation Example 3 used in Comparative Example 7 cannot be loaded with the antistatic agent on the fabric fiber monomers quickly, efficiently and stably under the traction of the foaming foam state as in Preparation Examples 1-2.

[0129] As to Comparative Examples 8-10, the modified treatment foaming liquid used in each of them respectively uses a single polyoxyethylene glycerin fatty acid ester, a single hydrogenated lecithin, and a single sodium dodecyl benzene sulfonate as the foaming agent, and the antistatic property and the durable antistatic property of the modified fabric obtained are not as good as those of Comparative Example 1 and are similar to the original fabric property, and the loading amount of the antistatic agent on the fabric is small and unstable.

[0130] Therefore, in combination with Examples 1-2 and Comparative Examples 7-10, in order to make the antistatic agent in the modified treatment foaming liquid still uniformly dispersed in the foaming foam, and quickly and efficiently penetrate and load on the surface of the fabric fiber monomers in a short time when it contacts the surface, the antistatic agent and the foaming agent in the modified treatment foaming liquid need to be specifically matched.

[0131] In the case where stearic dimethyl pentyl ammonium chloride or stearic amidopropyl dimethyl-β-hydroxyethyl ammonium dihydrogen phosphate is used as the antistatic agent in the modified treatment foaming liquid of the present application, the foaming agent compounded with lecithin / lecithin derivative and non-ionic surfactant cooperates to form an oil-water covering structure of the antistatic agent in water, so that the antistatic agent is dispersed in water to form charged microparticles, which can then penetrate the surface of the fiber monomers more quickly and be more stably adsorbed and combined when contacting the fibers, thereby promoting the stability of the solid loading of the antistatic agent and enhancing the antistatic property, weather resistance and stability of the modified fabric.

[0132] Therefore, using the modified treatment foaming liquid of the present application and modifying by the modified method of the present application, the fabric can quickly and stably load the antistatic agent under low water absorption, and a modified fabric with low size change rate, no color bleeding problem and stable and durable modification can be obtained.

[0133] Preparation Example 7

[0134] A modified treatment foaming liquid, similar to Preparation Example 1, differs in that the foaming agent B used is polyoxyethylene ether sorbitan fatty acid ester.

[0135] Preparation Example 8

[0136] A modified treatment foaming liquid, similar to Preparation Example 1, differs in that the foaming agent A used is lecithin.

[0137] Preparation Example 9

[0138] A modified treatment foaming liquid, similar to Preparation Example 1, except that the foaming agent A used is lecithin, and the foaming agent B is polyoxyethylene ether sorbitan fatty acid ester.

[0139] Examples 3-5

[0140] An antistatic fabric, similar to Example 1, except that the modified treatment foaming liquid used is different, as shown in Table 3 below.

[0141] Table 3. Information table of modified treatment foaming liquid used in Examples 3-5

[0142]

[0143]

[0144] The antistatic properties of the antistatic fabric of Examples 3-5, and whether the fabric color has a halo or not, were detected, and the detection results are shown in Table 4 below.

[0145] Table 4. Fabric condition record table of Examples 3-5

[0146]

[0147] As can be seen from Table 1 and Table 4, the modified fabric of Examples 7-9 has no color halo problem, and the antistatic properties, long-lasting antistatic properties, and dimensional change rate of the modified fabric are all better than those of Comparative Examples 3 and 6, and are significantly improved compared with the original fabric. In the present application, foaming agent A can also be lecithin, and foaming agent B can also be polyoxyethylene ether sorbitan fatty acid ester.

[0148] Meanwhile, in combination with Examples 1-5 and Comparative Examples 8-10, it can be seen that the foaming agent A of the present application is lecithin or hydrogenated soft phospholipid, and the foaming agent B is polyoxyethylene glycerol fatty acid ester or polyoxyethylene ether sorbitan fatty acid ester, which can reduce the dimensional change of the fabric before and after modification.

[0149] Preparation Example 10

[0150] A modified treatment foaming liquid, similar to Preparation Example 1, except that no penetrant is added, and water of equal mass is used instead of the penetrant.

[0151] Preparation Examples 11-16

[0152] A modified treatment foaming liquid, similar to Preparation Example 1, except that the penetrant used is different, as shown in Table 5 below.

[0153] Table 5. Information table of penetrant used in modified treatment foaming liquid of Preparation Examples 10-16

[0154] Penetrant information Preparation 11 Polyethylene glycol 600 Preparation 12 Polyethylene glycol 1000 Preparation 13 Polypropylene glycol 1000 Preparation 14 Glycerol Preparation 15 Propylene glycol Preparation 16 Butylene glycol

[0155] Examples 6-11

[0156] An antistatic fabric, similar to Example 1, except that the modified treatment foaming liquid used is different, as shown in Table 6 below.

[0157] Table 6. Information table of modified treatment foaming liquid used in Examples 6-12

[0158] Modified treatment foam source Example 6 Preparation 10 Example 7 Preparation 11 Example 8 Preparation 12 Example 9 Preparation 13 Example 10 Preparation 14 Example 11 Preparation 15 Example 12 Preparation 16

[0159] The antistatic performance of the antistatic fabric of Examples 6-12 and whether the fabric color has a halo were detected, and the detection results are shown in Table 7 below.

[0160] Table 7. Fabric condition record table of Examples 6-12

[0161]

[0162] As can be seen from Table 1 and Table 7, compared with Example 6, Example 1 further added polyethylene glycol as a penetrating agent to adjust the viscosity of the modified treatment foaming liquid and the surface wettability of the modified treatment foaming liquid and the fabric fibers, so that the foaming foam is more delicate, and promotes the penetration of the antistatic agent into the surface of the fiber monomer, increases the amount of the antistatic agent loaded on the fabric during the modification process, and improves the antistatic performance of the modified fabric.

[0163] As can be further seen from Examples 7-12, the penetrating agent in the present application can be a C2-C4 polyhydric alcohol or a low molecular weight polyhydric alcohol, and the low molecular weight polyhydric alcohol has a relative molecular weight of 600-1000, and the propylene glycol or polyethylene glycol 800 is preferred.

[0164] Preparation Examples 17-18

[0165] A modified treatment foaming liquid, similar to Example 1, except that the component amount is different, as shown in Table 8 below.

[0166] Table 8. Component amount record table of Preparation Examples 17-18

[0167] Antistatic agent / kg Water / kg Foaming agent A / kg Foaming agent B / kg Penetrant / kg Preparation 17 4.4 100 0.73 1.63 2.44 Preparation 18 7.8 140 1.72 4.37 8.4

[0168] Example 13

[0169] An antistatic fabric, similar to Example 1, except that the modified treatment foaming liquid used comes from Preparation Example 17.

[0170] Example 14

[0171] An antistatic fabric, similar to Example 1, except that the modified treatment foaming liquid used comes from Preparation Example 18.

[0172] Example 15

[0173] An antistatic fabric similar to Example 1, except that the S2 spreading density in the modification method is 226±4g / m 2 .

[0174] Example 16

[0175] An antistatic fabric similar to Example 1, except that the S2 spreading density in the modification method is 426±4g / m 2 .

[0176] The antistatic performance and the presence or absence of color shading of the antistatic fabric of Examples 13-26 were detected, and the detection results are shown in Table 9 below.

[0177] Table 9. Fabric condition record table of Examples 13-16

[0178]

[0179] In combination with Table 1 and Table 9, the fabric of Examples 13-14 has no color shading problem and small size change.

[0180] Meanwhile, comparing Example 1, Examples 13-14 and the original fabric, the antistatic performance and the long-lasting antistatic performance of Examples 13-14 are similar to those of Example 1, and are significantly better than those of the original fabric, so the modification method of the present application only has good effect in the dosage range represented by Examples 1, 13-14.

[0181] In the modification method of the present application, the spreading density of the foamed foam on the fabric affects the amount of water and antistatic agent per unit area of the fabric. The greater the spreading density, the more antistatic agent is contacted, and the amount of antistatic agent actually loaded on the modified fabric also increases, but at the same time, the greater the spreading density, the more water is absorbed during the modification process of the fabric.

[0182] Comparing Example 1 and Examples 15-16, the spreading density in Example 1 is 326±4g / m 2 , the spreading density in Example 15 is 226±4g / m 2 , and the spreading density in Example 16 is 426±4g / m 2 . Within the range of 226-426±4g / m 2 , the antistatic performance of the modified fabric increases with the increase of the spreading density, and when it approaches 426±4g / m 2 , the antistatic performance of the modified fabric increases, and the size change rate appears a trend of increasing. In combination with the cost of the foaming liquid for modification and the size change factor before and after the modification of the fabric, the spreading density of the foamed foam on the fabric in the present application is preferably 326-426±4g / m 2 .

[0183] Example 17

[0184] A cotton clothes, the outer fabric or inner layer fabric of the cotton clothes is the modified fabric of the application. The outer fabric of the cotton clothes has excellent, durable antistatic property, uniform color and good color development quality.

[0185] The specific embodiments are only an explanation of the application, which is not a limitation of the application, and those skilled in the art can make modifications to the embodiments without creative contribution after reading the specification, but as long as it is within the scope of the claims of the application, it is protected by the patent law.

Claims

1. A method for antistatic modification of fabrics, characterized in that, Includes the following steps: The modified foaming liquid was pre-foamed with a foaming ratio of 9.7, which is the ratio of the volume of the foaming liquid after foaming to the volume before foaming. The foam is spread onto the unfolded fabric surface, with a foam spreading density of 326~426±4 g / m². 2 The foam above the fabric is extracted under negative pressure from below the fabric, and the foam is pulled through the fabric and partially defoamed, with a defoaming rate of 82±1%. After the foam is extracted, the fabric is dried at room temperature and under ventilation conditions to obtain the modified fabric. The modified foaming liquid comprises the following components in parts by weight: 4.4 to 7.8 parts of antistatic agent, wherein the antistatic agent is stearoyl dimethylpentyl ammonium chloride or stearamidopropyl dimethyl-β-hydroxyethylammonium dihydrogen phosphate; 100-140 parts water; Foaming agent A: 0.73~1.72 parts, wherein foaming agent A is lecithin or its derivative; Foaming agent B, 1.63~4.37 parts, wherein foaming agent B is a nonionic surfactant.

2. The method for antistatic modification of fabric according to claim 1, characterized in that: The foaming agent A is hydrogenated lecithin.

3. The method for antistatic modification of fabric according to claim 2, characterized in that: The foaming agent B is a polyoxyethylene glycerol fatty acid ester or a polyoxyethylene ether sorbitan fatty acid ester.

4. The method for antistatic modification of fabric according to claim 1, characterized in that: It also includes 2.44 to 8.40 parts of a penetrant, wherein the penetrant is a C2 to C4 polyhydroxy alcohol or a low molecular weight polyol, wherein the low molecular weight polyol has a relative molecular weight of 600 to 1000.

5. The method for antistatic modification of fabric according to claim 4, characterized in that: The penetrant is propylene glycol or polyethylene glycol 800.

6. An antistatic fabric, characterized in that: It is obtained by modification by any one of the modification methods of claims 1 to 5.

7. The application of the antistatic fabric according to claim 6 in cotton clothing.

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