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Antibacterial non-woven fabric and preparation method thereof

A technology of non-woven fabrics and antibacterial agents, which is applied in the field of antibacterial non-woven fabrics and its preparation, can solve the problems of not improving the mechanical properties of non-woven fabrics, unsustainable antibacterial effects, and a large number of raw materials for preparation, and achieve excellent broad-spectrum antibacterial properties, Excellent antibacterial performance and chemical stability, mechanical performance and hydrophilic performance improvement effect

Active Publication Date: 2020-03-31
金华市华尔汽车饰件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is costly, complicated to operate, and the antibacterial effect cannot last
[0005] The invention patent with the application number CN201710754685.2 discloses an antibacterial co-radiation grafted sulfonated polypropylene non-woven fabric and its preparation method. The preparation raw materials include polypropylene non-woven fabric, sodium styrene sulfonate, N-ethylene base-2-pyrrolidone, acrylamide, acrylic acid, protoporphyrin, sodium hydroxide, sodium chloride, hydrochloric acid, potassium hydrogen phthalate, absolute ethanol, and then adopt the co-radiation grafting method to Vinyl monomers are grafted on the non-woven fabric to improve the performance of the non-woven fabric; the prepared antibacterial co-radiation grafted sulfonated polypropylene non-woven fabric has better antibacterial effect, but the disadvantage of this method is that the preparation There are many raw materials, the operation is complicated and uncontrollable, and it does not improve the mechanical properties of non-woven fabrics

Method used

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  • Antibacterial non-woven fabric and preparation method thereof
  • Antibacterial non-woven fabric and preparation method thereof
  • Antibacterial non-woven fabric and preparation method thereof

Examples

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preparation example Construction

[0032] see figure 1 Shown, the invention provides a kind of preparation method of antibacterial non-woven fabric, comprises the steps:

[0033] S1. Dissolve a predetermined amount of polyvinylidene fluoride and hydrophilic polyurethane in N,N-dimethylformamide solvent and mix evenly to prepare a spinning solution; use electrostatic spinning or wet spinning Said spinning solution is spun, and then dried to prepare composite fiber non-woven fabric;

[0034] S2. Place the composite fiber nonwoven fabric described in step S1 in a sealed bag, replace the air in the sealed bag with nitrogen, and irradiate the composite fiber nonwoven fabric with electron beams at room temperature;

[0035] Then immerse the irradiated composite fiber non-woven fabric in the antibacterial ionic liquid, place it in a constant temperature water bath after sealing, and carry out grafting reaction at a predetermined temperature;

[0036] S3, extract with methanol for 12-24 hours, and dry in vacuum to ob...

Embodiment 1

[0045] A kind of preparation method of antibacterial nonwoven fabric, comprises the steps:

[0046] S1. Dissolving polyvinylidene fluoride and hydrophilic polyurethane in N,N-dimethylformamide solvent and mixing uniformly to prepare spinning solution; in the spinning solution, the mass fraction of polyvinylidene fluoride is 15wt%, the mass ratio of hydrophilic polyurethane to polyvinylidene fluoride is 10:90;

[0047] Then adopt the wet spinning method to spin the spinning solution, then wash with ethanol and dry to prepare composite fiber non-woven fabric; wherein, the process parameters of wet spinning are set as follows: the inner diameter of the spinning needle is 0.61 mm, the liquid feeding rate is 15mL / h; the predetermined winding speed is 15mm / s.

[0048] S2. The composite fiber nonwoven fabric described in step S1 is placed in a polyethylene sealed bag, and after the air in the polyethylene sealed bag is replaced with nitrogen, electron beams are used to irradiate the...

Embodiment 2-3

[0070] The difference from Example 1 is that the mass ratio of water-based polyurethane to polyvinylidene fluoride is different, as shown in Table 2, and other steps are the same as in Example 1, and will not be repeated here.

[0071] Table 2 is the setting of hydrophilic polyurethane and polyvinylidene fluoride mass ratio in embodiment 1-3 (antibacterial test sample is Staphylococcus aureus)

[0072]

[0073] Please refer to Table 2, as the amount of polyurethane increases, the mechanical properties of the composite fiber nonwovens increase. With the increase of hydrophilic polyurethane, the breaking strength of the composite fiber increases gradually, and the breaking elongation also increases. The addition of hydrophilic polyurethane also improves the hydrophilic performance of antibacterial nonwovens to a certain extent. The surface of pure polyvinylidene fluoride material is extremely hydrophobic. When it is used as a filter material to treat water-based fluids, due ...

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Abstract

The invention provides an antibacterial non-woven fabric and a preparation method thereof. The preparation method comprises the following steps of firstly, preparing a polyvinylidene fluoride / hydrophilic polyurethane composite fiber non-woven fabric, and then performing electron beam radiation treatment on the composite fiber non-woven fabric; then immersing the composite fiber non-woven fabric into an antibacterial agent ionic liquid for grafting reaction; and finally, performing extracting with methanol and performing vacuum drying to obtain the successfully grafted antibacterial non-woven fabric. According to the preparation method, a polyvinylidene fluoride polymer is taken as a fiber main body, and hydrophilic polyurethane is introduced for composite spinning, so that the mechanical property and the hydrophilic property of the prepared antibacterial non-woven fabric are remarkably improved. By utilizing the grafting reaction of the polyvinylidene fluoride polymer and the antibacterial agent ionic liquid, the prepared antibacterial non-woven fabric is excellent in broad-spectrum antibacterial property, and the sterilizing rate of staphylococcus aureus reaches 99 percent or above.

Description

technical field [0001] The invention relates to the field of preparation of functional nonwoven fabrics, in particular to an antibacterial nonwoven fabric and a preparation method thereof. Background technique [0002] Non-woven fabrics have the advantages of porosity, large specific surface area, low price, simple preparation process and easy industrial production. In recent years, they have been increasingly widely researched and applied in the fields of biomedical and filter materials. Among them, polyvinylidene fluoride non-woven fabric has excellent chemical inertness and weather resistance, and has been successfully used in many fields such as chemical industry, food, medicine and biochemistry. However, the breaking strength and elongation at break of pure polyvinylidene fluoride nonwoven materials are low, and its mechanical tensile properties are difficult to meet actual needs. Moreover, the presence of fluorine atoms makes the polyvinylidene fluoride non-woven mate...

Claims

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Application Information

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IPC IPC(8): D06M13/473D06M10/08D06M14/26D01F8/10D01F8/16D04H1/4382D06M101/22D06M101/38
CPCD06M13/473D06M10/08D06M14/26D06M16/00D01F8/10D01F8/16D04H1/4382D06M2101/22D06M2101/38
Inventor 周延周箭程学红
Owner 金华市华尔汽车饰件有限公司
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