High-performance antibacterial flame-retardant environment-friendly textile size and preparation method thereof

Abstract

The invention belongs to the technical field of textile materials, and relates to a high-performance antibacterial flame-retardant environment-friendly textile sizing agent and a preparation method thereof. The textile size composition is prepared from the following raw materials in parts by weight: 50-80 parts of composite modified starch, 5-10 parts of (methyl) acrylic acid (methyl / butyl) ester, 5-7 parts of waterborne polyurethane, 12-20 parts of xanthan gum, 3-9 parts of a composite antibacterial agent, 10-18 parts of a composite flame retardant, 1-3 parts of sodium citrate, 2-3 parts of a smoothing agent and 40-80 parts of deionized water. The concentration of the slurry composition is controlled between 10 g / L and 35 g / L by deionized water, and the pH value is adjusted between 6 and 8. The textile sizing agent does not contain a PVA component, has the characteristics of bacteriostasis, flame retardance, environment friendliness, wear resistance, excellent sizing performance and the like, can replace the traditional PVA sizing agent, and is multifunctional, high-performance, bacteriostatic, flame-retardant and environment-friendly textile sizing agent.

Description

Technical Field

[0001] The invention relates to a textile slurry and a preparation method thereof, in particular to a high-performance antibacterial, flame-retardant and environmentally friendly textile slurry and a preparation method thereof, and belongs to the field of textile material modification. Background Art

[0002] During the weaving process, the yarn undergoes repeated mechanical operations such as stretching, bending, and friction. The sizing process can increase the hardness and strength of the fiber fabric, improve the fabric feel, antibacterial and flame retardant properties, and also prevent wrinkles, improve the wear resistance and durability of the fabric. The quality of the textile sizing process is closely related to the comprehensive performance of the sizing agent used. Therefore, how to prepare a multifunctional high-performance antibacterial, flame-retardant, environmentally friendly, wear-resistant and sizing-resistant environmentally friendly textile sizing agent to replace the non-environmentally friendly traditional PVA sizing agent is a hot issue in the current environmentally friendly textile sizing industry. Summary of the invention

[0003] The purpose of the present invention is to meet the application requirements of the slurry in the field of textile industry, and to have the technical requirements of halogen-free flame retardancy, high thermal conductivity, easy extrusion processing and high temperature resistance, and to design and develop a multifunctional high-performance antibacterial flame retardant environmentally friendly textile slurry with antibacterial, flame retardant, environmental protection, wear resistance and excellent sizing performance. It is easy to use and degradable and environmentally friendly, and can replace traditional non-environmentally friendly PVA slurry.

[0004] This technical invention uses composite modified starch as the basic material, and by adding (methyl / butyl) (meth)acrylate, waterborne polyurethane, xanthan gum, composite antibacterial agent, composite flame retardant, sodium citrate, smoothing agent and deionized water in steps, and stirring to react and mix, a high-performance antibacterial flame retardant environmentally friendly textile slurry is prepared at a relatively low temperature. The concentration of the textile slurry is controlled between 10-35g / L, and the pH is adjusted to between 6 and 8.

[0005] The invention discloses a high-performance antibacterial flame-retardant environmentally friendly textile slurry. The high-performance antibacterial flame-retardant environmentally friendly textile slurry is prepared from the following substances in parts by weight: 50-80 parts of composite modified starch, 5-10 parts of (methyl)acrylate (methyl / butyl) ester, 5-7 parts of waterborne polyurethane, 12-20 parts of xanthan gum, 3-9 parts of composite antibacterial agent, 10-18 parts of composite flame retardant, 1-3 parts of sodium citrate, 2-3 parts of smoothing agent and 40-80 parts of deionized water.

[0006] The composite modified starch used in the present invention is a mixture of phosphate starch and oxidized starch.

[0007] The (methyl / butyl) (meth)acrylate used in the present invention is methyl methacrylate.

[0008] The waterborne polyurethane used in the present invention is of aromatic polyether type.

[0009] The xanthan gum used in the present invention is white or light yellow powder.

[0010] The composite antibacterial agent used in the present invention is a mixture containing antibacterial agent nano silver and antibacterial agent alkyl quaternary ammonium salt, wherein the mass fraction ratio of nano silver to alkyl quaternary ammonium salt is 1:(2-5); the surface of the antibacterial agent nano silver is treated with silane, and the alkyl quaternary ammonium salt is grafted through a chemical reaction to obtain the antibacterial agent.

[0011] The composite flame retardant used in the present invention is a binary mixture of resorcinol bis(diphenyl) phosphate (RDP) and organic montmorillonite.

[0012] The lubricant used in the present invention is polysiloxane.

[0013] The reactor used in the present invention has a capacity of 200 liters and a temperature rise range of 25-180°C.

[0014] Compared with the prior art, the beneficial effects of the present invention are mainly:

[0015] The present invention adopts composite modified starch as a basic material, and by adding methyl methacrylate, waterborne polyurethane, xanthan gum, composite antibacterial agent, composite flame retardant, sodium citrate, smoothing agent and deionized water in steps, reacting and mixing under stirring, and preparing a high-performance antibacterial flame-retardant environmentally friendly textile slurry at a relatively low temperature (≤90° C.). The textile slurry has the characteristics of excellent antibacterial, flame-retardant, environmentally friendly, wear-resistant and sizing properties, and is a multifunctional high-performance antibacterial flame-retardant environmentally friendly textile slurry. It is easy to use and degradable and environmentally friendly, providing an option to replace traditional non-environmentally friendly PVA slurry. DETAILED DESCRIPTION

[0016] The present invention describes the technical solution of the present invention in more detail through the following specific embodiments, but the present invention is not limited to the specific embodiments set forth below.

[0017] The raw material grades and physical properties of the following examples and comparative examples of the present invention are listed in Table 1:

[0018] Table 1

[0019] Material or name Material production company and main physical properties Phosphate Starch Appearance: White to light yellow powder. Oxidized starch Appearance: White and transparent. Methyl Methacrylate Density 0.943g / cm3, melting point -48℃, boiling point 100℃, flash point 8℃, critical temperature 294℃. Waterborne polyurethane Aromatic polyether type. Xanthan gum Appearance: White or light yellow powder. Antimicrobial Agents I Nanosilver: powder, particle size between 25-50nm. Antimicrobial Agents Ⅱ Alkyl quaternary ammonium salt Flame retardant Ⅰ Resorcinol bis(diphenyl) phosphate (RDP): liquid. Flame retardant Ⅱ Organic montmorillonite: Zhejiang Fenghong Clay Chemical Company, DK001 interlayer spacing is 0.35nm. Sodium Citrate Properties: Colorless crystal or white powder; density 1.008g / mL; melting point 300℃. Smoothing agent Polysiloxane: Dow Corning, brand SFR100. Deionized water Industrial grade.

[0020] The following examples and comparative examples prepare a high-performance antibacterial flame-retardant environmentally friendly textile slurry, whose concentration is between 10-35g / L and whose pH value is between 6-8. Its adhesion is expressed by testing the adhesion to polyester fiber; its sizing yarn (polyester) breaking strength is tested by the roving test method, and three sets of data are tested for each sample, and the average value is taken; its antibacterial rate is tested by the bacterial liquid absorption method; its flame retardant performance is tested by the vertical burning method according to the GB / T 5455 textile combustion performance test standard. The main indicators are: vertical direction damage length, flame retardant and afterburning time, etc.

[0021] In the following embodiments and comparative examples, the tested samples are sized polyester fiber materials.

[0022] The formulation compositions of Examples 1 to 4 of the present invention and Comparative Examples 5 to 6 are shown in Table 2:

[0023] Table 2

[0024]

[0025] The test results and properties of Examples 1 to 4 of the present invention and Comparative Examples 5 to 6 are listed in Table 3:

[0026] Table 3

[0027]

[0028]

[0029] Embodiments 1 to 4: Using composite modified starch as the basic material, by adding methyl methacrylate, waterborne polyurethane, xanthan gum, composite antibacterial agent, composite flame retardant, sodium citrate, smoothing agent and deionized water, stirring to react and mix, a high-performance antibacterial flame-retardant environmentally friendly textile slurry is prepared at a relatively low temperature (≤90°C). From the test results of Embodiments 1 to 4 in Table 3, it is found that: its adhesion (polyester) is ≥37.1N, the breaking strength (polyester) is ≥26.9N / mm2, the antibacterial rate is ≥94%, the sizing performance is excellent, and the flame retardancy is good.

[0030] Comparative Examples 5-6: From the test results in Table 3, it can be seen that the antibacterial property or flame retardant property of Comparative Examples 5 and 6 is significantly lower than that of the embodiments.

[0031] The above examples show that the high-performance antibacterial flame-retardant environmentally friendly textile slurry prepared by the present invention has the characteristics of antibacterial, flame-retardant, environmentally friendly, wear-resistant and excellent sizing performance, and is a multifunctional high-performance antibacterial flame-retardant environmentally friendly textile slurry. It is an ideal choice to replace the traditional non-environmentally friendly PVA slurry.

[0032] The above disclosures are only several specific embodiments of the present invention, but the present application is not limited thereto. Any local changes to the formula, process, etc. based on these should be within the scope of protection of the present application.

Claims

1. A high-performance antibacterial flame-retardant environmentally friendly textile slurry, characterized in that: The high-performance antibacterial flame-retardant environmentally friendly textile slurry is prepared from the following substances in parts by weight: 50-80 parts of composite modified starch (Methyl / butyl) acrylate 5-10 parts 5-7 parts waterborne polyurethane 12-20 parts xanthan gum 3-9 parts of compound antibacterial agent Composite flame retardant 10-18 parts 1-3 parts sodium citrate 2-3 parts of smoothing agent 40-80 parts of deionized water.

2. The high-performance antibacterial flame-retardant environmentally friendly textile slurry according to claim 1, characterized in that: The composite modified starch is a mixture of phosphate starch and oxidized starch.

3. The high-performance antibacterial flame-retardant environmentally friendly textile slurry according to claim 1, characterized in that: The composite antibacterial agent is a mixture containing antibacterial nano silver and antibacterial alkyl quaternary ammonium salt.

4. The high-performance antibacterial flame-retardant environmentally friendly textile slurry according to claim 1, characterized in that: The surface of the antibacterial agent nano silver is treated with silane and then grafted with alkyl quaternary ammonium salt through chemical reaction to obtain the antibacterial agent nano silver.

5. The high-performance antibacterial flame-retardant environmentally friendly textile slurry according to claim 1, characterized in that: In the composite antibacterial agent, the mass ratio of nano silver and alkyl quaternary ammonium salt is 1:(2-5).

6. The high-performance antibacterial flame-retardant environmentally friendly textile slurry according to claim 1, characterized in that: The composite flame retardant is a binary mixture of resorcinol bis(diphenyl) phosphate (RDP) and organic montmorillonite.

7. The high-performance antibacterial flame-retardant environmentally friendly textile slurry according to claim 1, characterized in that: The smoothing agent is polysiloxane.

8. The method for preparing a high-performance antibacterial flame-retardant environmentally friendly textile slurry according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. Add xanthan gum and composite modified starch to deionized water at 60-75°C, stir until completely dissolved, filter out insoluble impurities, and obtain an aqueous solution of xanthan gum and starch; S2. Maintaining the temperature in step S1, controlling the stirring speed to 50 rpm, adding (methyl) acrylate (methyl / butyl) ester, aqueous polyurethane, sodium citrate and smoothing agent to the above aqueous solution, and continuing stirring for 3 minutes; S3. Heat the above solution system to 80-85°C and keep it warm for 30-45 minutes, then add the composite antibacterial agent and the composite flame retardant at a certain stirring speed, adjust the pH to 6-8, control the concentration of the slurry between 10-35g / L, filter the material, and obtain a high-performance antibacterial flame-retardant environmentally friendly textile slurry.

9. The method for preparing the high-performance antibacterial flame-retardant environmentally friendly textile slurry according to claim 8, characterized in that: The stirring speed is 60 rpm.

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