Fabric after-finishing agent and wear-resistant antibacterial fabric prepared from same

Abstract

The invention relates to a cloth after-finishing agent and wear-resistant antibacterial cloth prepared from the cloth after-finishing agent. The cloth after-finishing agent is prepared from the following components in percentage by weight: 40%-60% of VAE emulsion, 5%-8% of a zinc oxide solution, 10%-20% of heavy calcium carbonate, 0.3%-1% of a defoaming agent, 0.3%-1% of a dispersing agent, 0.5%-2% of a thickening agent and the balance of water. The wear-resistant antibacterial cloth is prepared by taking cloth as a base material and coating the surface of the base material with an after-finishing agent. The cloth after-finishing agent is convenient to produce and low in cost, and a formed coating layer has good low-temperature film-forming property. The ultra-thin coating on the surface of the wear-resistant antibacterial adhesive tape can have certain antibacterial and bacteriostatic effects under the condition that the breathability and comfort degree are not affected, the problem that cotton products are mildewed and damaged is effectively solved, meanwhile, the appearance with good hand feeling and luster is provided, the problem that traditional cloth is poor in wear resistance is solved, and the wear-resistant antibacterial adhesive tape has good application prospects. The bandage can be applied to the fields of repeatedly used bandages (such as Chinese zither finger bandages) and the like.

Description

Technical Field

[0001] The invention relates to the finishing of cloth, and in particular to a cloth finishing agent and wear-resistant and antibacterial cloth prepared by using the finishing agent. Background Art

[0002] Traditional fabrics, especially cotton fabrics, have poor wear resistance during use. After repeated use, the strength decreases, affecting the performance. Repeated friction easily causes pilling, affecting the appearance and feel. In addition, there are problems of mold and moth during storage. In order to improve the wear resistance and antibacterial properties of the fabric, the fabric needs to be post-finished. The usual post-finishing method is to coat a layer of ultra-thin film on the surface of the fabric to improve the wear resistance, appearance, feel and antibacterial properties of the fabric. Commonly used wear-resistant finishing agents are generally acrylic emulsions, which have relatively high production costs and need to be heated and cured by special equipment. The coating process is relatively complicated. Summary of the invention

[0003] In order to solve the problems that the existing fabric finishing agent production cost needs to be heated and cured by special equipment after coating, and the coating process is relatively complicated, the present invention provides a fabric finishing agent and a wear-resistant and antibacterial fabric prepared using the finishing agent, so as to effectively reduce the production difficulty and make the coating layer have better low-temperature film-forming properties.

[0004] The fabric finishing agent of the present invention is prepared by the following components in percentage by weight: VAE emulsion 40% - 60%, zinc oxide solution 5% - 8%, heavy calcium 10% - 20%, defoamer 0.3% - 1%, dispersant 0.3% - 1%, thickener 0.5% - 2%, and the balance is water.

[0005] In order to give the fabric more colors and variations, color paste can be added, and the amount of the color paste is 0.3% - 0.5% based on the total weight of the fabric finishing agent.

[0006] In order to further improve the flowability and film strength of the film-forming process, a film-forming aid may be added, wherein the amount of the film-forming aid is 0.3% to 0.5% based on the total weight of the fabric finishing agent.

[0007] In order to give the fabric a good antibacterial and antiseptic effect, the concentration of zinc oxide solution is 10-30wt%. In order to effectively improve the roughness and frosted feel of the fabric, the mesh number of heavy calcium carbonate is 325-800 mesh, and the weight ratio of 325 mesh heavy calcium carbonate to 800 mesh heavy calcium carbonate is 2:1.

[0008] The preparation method of the above-mentioned finishing agent is: ①Mix water, dispersant and defoamer in order, add heavy calcium and stir at 350-450 r / min; ② Add VAE emulsion and zinc oxide solution and stir evenly at a certain speed.

[0009] ③ Add water to dilute the thickener, and adjust the viscosity of the finishing agent to 20000-30000mPa•S through the thickener.

[0010] The present invention also provides a wear-resistant antibacterial fabric prepared by using the fabric finishing agent. The wear-resistant antibacterial fabric is prepared by using fabric as a substrate and coating the finishing agent on the surface of the substrate.

[0011] The substrate is selected from woven fabric, knitted fabric or non-woven fabric. The currently used specifications are mainly T / C7030, yarn count 26, T / C6040, yarn count 24, CVC6535, yarn count 24, CVC7030, yarn count 26, CVC6040, yarn count 22.5. Different specifications of fabrics only affect the mechanical properties of the final bandage product.

[0012] The coating method of the finishing agent on the substrate can be blade coating or dip coating.

[0013] ① Use scraper coating with a coating thickness of 10μm - 20μm. Different coating thicknesses will affect the wear resistance, feel and stiffness of the final bandage product.

[0014] ②Use dipping method, the coating amount is 40-150g / m 2 , the dipped fabric feels slightly harder and has better wear resistance.

[0015] After coating, the fabric passes through an oven and is dried at 60℃ - 100℃. The speed of the net curtain is 2-6m / min to ensure that the finishing agent is dried to form a film and to avoid sticking between the fabrics. Finally, it is rolled and packaged.

[0016] 1. The fabric finishing agent of the present invention is easy to produce and has low cost, and the formed coating layer has good low-temperature film-forming properties.

[0017] 2. The ultra-thin coating on the surface of the wear-resistant and antibacterial tape formed by coating the fabric finishing agent of the present invention on the fabric surface can have a certain antibacterial and antimicrobial effect without affecting the breathability and comfort, effectively preventing the problem of mold and moth in cotton products, while providing a better feel and glossy appearance.

[0018] 3. The wear-resistant and antibacterial fabric produced by the fabric finishing agent of the present invention solves the problem of poor wear resistance of traditional fabrics. The number of friction damage is about 10 times that of ordinary polyester-cotton fabric and about 2 times that of wear-resistant polyester-cotton fabric.

[0019] 4. After the fabric is treated with the fabric finishing agent of the present invention, the scope of application is expanded, and it can be applied to fields such as repeatedly used bandages (such as guzheng finger bandages); traditional bandages are prone to pilling after repeated use, and the adhesion with glue will decrease. The surface coating of the bandage treated with the fabric finishing agent described in this application reduces the problem of pilling after friction. At the same time, the added heavy calcium can increase the surface roughness and improve the bonding strength with glue. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The present invention adopts the post-finishing agent and the coating of the gaps in the yarn of the wear-resistant and antibacterial fabric prepared by the post-finishing agent.

[0021] Figure 1 It shows that after the fabric is treated with the finishing agent of the present invention, a continuous and dense film is formed on the surface of the fabric, which has good film-forming continuity and can effectively play the role of wear resistance and barrier.

[0022] Figure 2 It is an infrared analysis spectrum of a coating formed after the finishing agent of the present invention is applied on the surface of a fabric.

[0023] The treated surface film is subjected to infrared detection to form a standard spectrum, and the composition of the subsequent finishing agent is analyzed to ensure its consistency with the standard spectrum, so as to ensure the stability of production.

[0024] Figure 2 The main function is to compare with the standard atlas to ensure that the composition of the finishing agent is stable after preparation and no denaturation occurs. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Example 1: Using CVC6040, yarn count 22.5, warp and weft density 69*58 polyester-cotton blended fabric as the base material ① Add 10g (1%) defoamer and 10g (1%) dispersant to 600g (60%) VAE emulsion and stir evenly; ② Add 100g (10%) 325 mesh heavy calcium and 50g (5%) 800 mesh heavy calcium, and stir at 400r / min for two minutes; ③After mixing evenly, add 80g (8%) zinc oxide solution; ④ Add 5g (0.5%) of thickener diluted with water and mix evenly with the finishing agent to adjust the viscosity to about 20000mPa·S; ⑤ Apply the finishing agent to the fabric by scraping, the coating thickness is 10μm, the speed of the mesh belt is 3m / min, the maximum temperature of the drying oven is 100℃, and the drying time is about 2min.

[0027] The final number of friction damages of the fabric was 7627 times; the stiffness in the radial direction was 925.1 mN and in the weft direction was 765.1 mN; the breaking strength was 248.67 N and the breaking elongation was 18.0%; the 7-day Escherichia coli antibacterial rate was 99.91%, and the 7-day Candida albicans antibacterial rate was 99.85%. Example 2: Using CVC6040, yarn count 22.5, warp and weft density 69*58 polyester-cotton blended fabric as the base material, ① Add 10g (1%) defoamer and 10g (1%) dispersant into water and stir evenly; ② Add 100g (10%) 325 mesh heavy calcium and 50g (5%) 800 mesh heavy calcium, and stir at 400r / min for two minutes; ③ Add 400g (40%) VAE emulsion and 50g (5%) zinc oxide solution, and stir at 500r / min for three minutes; ④ Add 20g (2%) of diluted thickener, mix evenly with VAE emulsion, and adjust the viscosity to about 20000mPa·S; ⑤ Apply the finishing agent to the fabric by scraping, the coating thickness is 10μm, the speed of the mesh belt is 3m / min, the maximum temperature of the drying oven is 60℃, and the drying time is about 2min.

[0028] The final number of friction damages of the fabric was 5598 times; the stiffness in the radial direction was 657.1mN, and in the weft direction was 597.6mN; the breaking strength was 212.72N, and the breaking elongation was 26.0%; the 7d Escherichia coli antibacterial rate was 99.62%, and the 7d Candida albicans antibacterial rate was 99.57%. Example 3: Using CVC6040, yarn count 22.5, warp and weft density 69*58 polyester-cotton blended fabric as the base material ① Add 10g (1%) defoamer and 10g (1%) dispersant into water and stir evenly; ② Add 100g (10%) 325 mesh heavy calcium and 50g (5%) 800 mesh heavy calcium, and stir at 400r / min for two minutes; ③ Add 500g (50%) VAE emulsion and 70g (7%) zinc oxide solution, and stir at 500r / min for three minutes; ④ Add 10g (1%) of diluted thickener, mix evenly with VAE emulsion, and adjust the viscosity to about 20000mPa·S; ⑤ Apply the finishing agent to the fabric by scraping, the coating thickness is 10μm, the speed of the mesh belt is 3m / min, the maximum temperature of the drying oven is 80℃, and the drying time is about 2min.

[0029] The final number of friction damages of the fabric was 6785 times; the stiffness in the radial direction was 785.5 mN and in the weft direction was 672.1 mN; the breaking strength was 239.7 N and the breaking elongation was 24.6%; the 7-day Escherichia coli antibacterial rate was 99.84% and the 7-day Candida albicans antibacterial rate was 99.79%. Example 4: Using CVC6040, yarn count 26, warp and weft density 68*57 polyester-cotton blended fabric as the base material ① Add 10g (1%) defoamer, 10g (1%) dispersant, 5g (0.5%) film-forming aid, and 3g (0.3%) color paste into water and stir evenly; ② Add 100g (10%) 325 mesh heavy calcium and 50g (5%) 800 mesh heavy calcium, and stir at 400r / min for two minutes; ③ Add 480g (48%) VAE emulsion and 70g (7%) zinc oxide solution, and stir at 500r / min for three minutes; ④ Add 15g (1.5%) of diluted thickener, mix evenly with VAE emulsion, and adjust the viscosity to about 20000mPa·S; ⑤ Apply the finishing agent to the fabric by scraping, the coating thickness is 10μm, the speed of the mesh belt is 5m / min, the maximum temperature of the drying tunnel is 70℃, and the drying time is about 1.5min (the drying temperature of other wear-resistant finishing agents is 120-150℃, and the drying time is 5-10min).

[0030] The final number of friction damages of the fabric was 9999+ times; the stiffness in the radial direction was 1044mN and in the weft direction was 718.1mN; the breaking strength was 276.2N and the breaking elongation was 15.3%; the 7d Escherichia coli antibacterial rate was 99.87% and the 7d Candida albicans antibacterial rate was 99.76%.

Claims

1. A fabric finishing agent according to claim 1, characterized in that The solid content of the selected VAE emulsion is 40%-60%.

2. The fabric finishing agent according to claim 1, characterized in that The concentration of the zinc oxide solution is 10-30wt%.

3. The fabric finishing agent according to claim 1, characterized in that The mesh size of heavy calcium carbonate is 325-800 mesh, and the weight ratio of 325 mesh heavy calcium carbonate to 800 mesh heavy calcium carbonate is 2:

1.

4. The fabric finishing agent according to claim 1, characterized in that The invention also contains color paste, wherein the color paste is used in an amount of 0.3% to 0.5% based on the total weight of the fabric finishing agent.

5. The fabric finishing agent according to claim 1, characterized in that It also contains a film-forming aid, wherein the film-forming aid is used in an amount of 0.3% to 0.5% based on the total weight of the fabric finishing agent.

6. A wear-resistant and antibacterial fabric prepared by using the fabric finishing agent according to any one of claims 1 to 6, characterized in that It is made of cloth as the base material and a finishing agent coated on the surface of the base material.

7. The wear-resistant and antibacterial fabric according to claim 7, characterized in that The substrate is selected from woven fabric, knitted fabric or non-woven fabric.

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