阅读说明：本技术 一种棉基抑菌复合面料的制备方法 (Preparation method of cotton-based antibacterial composite fabric ) 是由 杨双建 龚琤琤 于 2019-09-18 设计创作，主要内容包括：本发明公开了一种棉基抑菌复合面料的制备方法,具体制备过程如下：将处理后的棉纤维加入疏水抗菌包覆剂中浸渍后烘干,然后加入质量浓度为硝酸银溶液中浸泡,将得到的纤维加入抗菌整理剂中浸泡,然后在热水中蒸煮得到抗菌疏水棉纤维；将制备的抗菌舒适棉纤维纺织成纱线,然后将纱线纺织成面料,得到棉基抑菌复合面料。本发明通过在纤维的表面先负载一层抗菌疏水层,然后在抗菌疏水层的表面负载一层多孔吸水层,实现棉纤维瞬吸的效果,提高了棉纤维的吸水率,并且由于内层为疏水层,汗液透过吸水层后,被疏水层截留在吸水层和疏水层之间,没有渗透在纤维中心,并且由于外层的吸水层含有大量空隙,进而使得棉纤维能够实现快干的性能。(The invention discloses a preparation method of a cotton-based antibacterial composite fabric, which comprises the following specific preparation processes: adding the treated cotton fibers into a hydrophobic antibacterial coating agent, soaking, drying, adding a silver nitrate solution with mass concentration, soaking, adding the obtained fibers into an antibacterial finishing agent, soaking, and steaming in hot water to obtain antibacterial hydrophobic cotton fibers; and spinning the prepared antibacterial comfortable cotton fibers into yarns, and then spinning the yarns into fabric to obtain the cotton-based antibacterial composite fabric. The invention firstly loads an antibacterial hydrophobic layer on the surface of the fiber, and then loads a porous water absorption layer on the surface of the antibacterial hydrophobic layer, thereby realizing the effect of instant absorption of the cotton fiber, improving the water absorption rate of the cotton fiber, and sweat is trapped between the water absorption layer and the hydrophobic layer by the hydrophobic layer after penetrating through the water absorption layer without permeating the center of the fiber, and the water absorption layer of the outer layer contains a large number of gaps, thereby further realizing the quick drying performance of the cotton fiber.)

1. A preparation method of a cotton-based antibacterial composite fabric is characterized by comprising the following specific preparation processes:

firstly, adding cotton fibers into a sodium hydroxide solution with the mass concentration of 5%, heating to 60-70 ℃, cooking for 50-60min, then filtering, washing to be neutral, and drying;

secondly, adding the cotton fibers dried in the first step into a hydrophobic antibacterial coating agent, heating to 80-85 ℃, stirring for reaction for 4-5 hours, fishing out the cotton fibers, washing with ethanol, baking the washed cotton fibers in a 70 ℃ oven to constant weight, removing acetone serving as a solvent in the hydrophobic antibacterial coating agent, adding the dried fibers into a silver nitrate solution with the mass concentration of 100ppm, oscillating ultrasonically at 40 ℃ for 8-10 hours, filtering, washing, and baking in a 70 ℃ oven to constant weight to obtain the hydrophobic antibacterial fibers;

thirdly, adding the hydrophobic antibacterial fibers into the antibacterial finishing agent, soaking for 10-15min, heating to 50-60 ℃, adding a phosphoric acid solution, stirring for reaction for 2-3h, filtering and drying, then cooking the dried fibers in hot water at 90-95 ℃ for 30-40min, and coating a porous water absorption layer on the surfaces of the hydrophobic antibacterial fibers to obtain the antibacterial hydrophobic cotton fibers;

and fourthly, spinning the antibacterial comfortable cotton fibers prepared in the third step into yarns, and then spinning the yarns into fabric to obtain the cotton-based antibacterial composite fabric.

2. The preparation method of the cotton-based antibacterial composite fabric according to claim 1, wherein the specific preparation process of the hydrophobic antibacterial coating agent is as follows:

adding diphenylsilanediol into an acetone solution, heating to 100-;

secondly, cooling the temperature in the reaction container to 90-95 ℃, simultaneously adding azodiisobutyronitrile and allyl mercaptan into the reaction container, stirring and refluxing for 1-2h, then heating to 120-130 ℃, and refluxing for 4-5h to obtain the hydrophobic antibacterial coating agent.

3. The preparation method of the cotton-based antibacterial composite fabric according to claim 2, wherein the diphenyl silanediol, the cis-aconitic anhydride and the p-toluenesulfonic acid are mixed according to a mass ratio of 1: 0.72: mixing at a ratio of 0.21-0.22.

4. The method for preparing the cotton-based antibacterial composite fabric according to claim 2, wherein 0.76-0.78g of azobisisobutyronitrile and 1.57-1.61g of allyl mercaptan are added into each gram of diphenyl silanediol.

5. The preparation method of the cotton-based antibacterial composite fabric according to claim 1, characterized in that the antibacterial finishing agent is prepared by the following specific steps:

step 1: adding resorcinol into water, simultaneously adding hydrochloric acid to adjust the pH value of the solution to 1, then adding formaldehyde and acethydrazide trimethyl ammonium chloride into a reaction container, heating to 60-70 ℃, stirring for reaction for 10-12h, then evaporating to remove the solvent in the solution, and washing to be neutral to obtain phenol hydroxyl ammonium chloride;

step 2: adding the phenol hydroxyl ammonium chloride prepared in the step 1 into water, stirring and dissolving, then adjusting the pH value of the solution to 13, then adding a formaldehyde solution with the mass fraction of 37%, heating to 50-60 ℃, stirring and reacting for 2-3h, then adding the formaldehyde solution with the mass fraction of 37% into a reaction container, heating to 100-110 ℃, performing reflux reaction for 5-6h, then performing reduced pressure distillation, and removing the solvent and unreacted formaldehyde to obtain a solid product;

and step 3: and adding the prepared solid product into hot water of 100 ℃, stirring and dissolving, adding polyvinyl alcohol, and stirring and mixing uniformly to obtain the antibacterial finishing agent.

6. The preparation method of the cotton-based antibacterial composite fabric according to claim 5, wherein in the step 1, the resorcinol, the formaldehyde and the acethydrazide trimethyl ammonium chloride are prepared into a mixture of 1: 1: 1, mixing and preparing.

7. The preparation method of the cotton-based antibacterial composite fabric according to claim 5, wherein 8mL of water and 0.32-0.33g of polyvinyl alcohol are added into each gram of solid product in the step 3.

8. The preparation method of the cotton-based antibacterial composite fabric according to claim 1, wherein in the third step, 20-25mL of antibacterial finishing agent is added into each gram of hydrophobic antibacterial fiber, and 2-3g of phosphoric acid solution is added.

Technical Field

The invention belongs to the field of fabric preparation, and relates to a preparation method of a cotton-based antibacterial composite fabric.

Background

Cotton fiber is because the comfortable preparation of being applied to the underwear of sweat-absorbing, but cotton fiber warp the shrink easily after the aquatic flooding, and cotton fiber absorbs water sweat-absorbing ability stronger nevertheless can not realize the effect of quick sweat-absorbing simultaneously, and sweat stain flooding is difficult dry inside the fibre behind the cotton fiber sweat-absorbing, make the clothing moist, wear next to the shin uncomfortable, especially after sweat stain flooding, sweat flooding is inside the fibre, make the surface fabric breed the bacterium from fibre center inside, cause the clothing to have the peculiar smell.

Disclosure of Invention

The invention aims to provide a preparation method of a cotton-based antibacterial composite fabric, which is characterized in that an antibacterial hydrophobic layer is loaded on the surface of a fiber, and then a porous water absorption layer is loaded on the surface of the antibacterial hydrophobic layer, so that the instant absorption effect of the cotton fiber is realized, the water absorption rate of the cotton fiber is improved, sweat is trapped between the water absorption layer and the hydrophobic layer by the hydrophobic layer after penetrating through the water absorption layer due to the inner layer being the hydrophobic layer, and is not permeated in the center of the fiber, and the quick drying performance of the cotton fiber can be realized due to the fact that the water absorption layer on the outer layer contains a large number of gaps.

The purpose of the invention can be realized by the following technical scheme:

a preparation method of a cotton-based antibacterial composite fabric comprises the following specific preparation processes:

step one, preparing a hydrophobic antibacterial coating agent:

adding diphenylsilanediol into an acetone solution, heating to 100-: 0.72: 0.21-0.22, wherein the diphenyl silanediol contains two hydroxyl groups, and can react with anhydride in cis-aconitic anhydride for ring opening under the catalytic action of p-toluenesulfonic acid to form a polymer, and the polymerized product contains carboxyl and olefin groups in the cis-aconitic anhydride;

secondly, cooling the temperature in the reaction container to 90-95 ℃, simultaneously adding azodiisobutyronitrile and allyl mercaptan into the reaction container, stirring and refluxing for 1-2h, then heating to 120-; adding 0.76-0.78g of azobisisobutyronitrile into each gram of diphenyl silanediol, and adding 1.57-1.61g of allyl mercaptan; the allyl in the allyl mercaptan and the unsaturated bond in the polymer can carry out free radical polymerization reaction under the action of the azodiisobutyronitrile, so that a large number of mercaptan groups are introduced into a polymer chain, and meanwhile, the prepared polymer is prepared by polymerizing diphenyl silanediol serving as a monomer and anhydride, so that the prepared polymer contains a large number of siloxane bonds, and further has high hydrophobic property;

secondly, adding the cotton fibers into a sodium hydroxide solution with the mass concentration of 5%, heating to 60-70 ℃, cooking for 50-60min, filtering, washing to be neutral, and drying; removing ester groups on the surface of the cotton fibers under the action of sodium hydroxide, so that more hydroxyl groups are exposed;

thirdly, adding the cotton fiber dried in the second step into a hydrophobic antibacterial coating agent, heating to 80-85 ℃, stirring and reacting for 4-5h, fishing out the cotton fiber, washing with ethanol, baking the washed cotton fiber in a 70 ℃ oven to constant weight, removing solvent acetone in the hydrophobic antibacterial coating agent, adding the dried fiber into a silver nitrate solution with the mass concentration of 100ppm, ultrasonically shaking for 8-10h at 40 ℃, filtering, washing, and baking in a 70 ℃ oven to constant weight to obtain the hydrophobic antibacterial fiber; adding 12-13mL of hydrophobic antibacterial coating agent into each gram of cotton fibers, and adding 30mL of silver nitrate solution with the mass concentration of 100 ppm; the hydrophobic antibacterial coating agent has the advantages that the hydrophobic antibacterial agent polymer chain contains carboxyl, the hydrophobic antibacterial agent polymer chain can react with alcohol groups on cotton fibers, so that the hydrophobic antibacterial coating agent is firmly compounded on the surfaces of the cotton fibers, the hydrophobic antibacterial agent has high hydrophobicity, a hydrophobic film is formed on the surfaces of the cotton fibers after the antibacterial agent is coated, and meanwhile, the hydrophobic antibacterial coating agent polymer chain contains a large number of thiol groups, so that the thiol groups can be chelated with silver ions, and a large number of silver ions are adsorbed on the surface of the hydrophobic film, so that the fibers not only have comfort, but also have antibacterial and antibacterial properties;

fourthly, adding the hydrophobic antibacterial fibers into the antibacterial finishing agent, soaking for 10-15min, heating to 50-60 ℃, adding a phosphoric acid solution, stirring for reaction for 2-3h, filtering and drying, then cooking the dried fibers in hot water at 90-95 ℃ for 30-40min, and coating a porous water absorption layer on the surfaces of the hydrophobic antibacterial fibers to obtain the antibacterial hydrophobic cotton fibers; 20-25mL of antibacterial finishing agent is added into each gram of hydrophobic antibacterial fiber, 2-3g of phosphoric acid solution is added, and since the hydrophobic fiber has higher hydrophobic property and the hydrophobic antibacterial agent is coated on the surface of the cotton fiber, the cotton fiber has stronger hydrophobicity, the cotton fiber does not shrink after washing due to the fixing effect of the hydrophobic layer during washing; because the antibacterial finishing agent is prepared by crosslinking polymerization of phenolic hydroxyl and formaldehyde, has certain adhesive property, can be adhered to the surface of the fiber, and is firmly combined on the surface of the fiber after being cured by phosphoric acid, and the dispersed polyvinyl alcohol solution is easily soluble in water at high temperature and can be well dispersed in water, so that the prepared surface of the fiber contains a large number of gaps, and can facilitate the adsorption of moisture, when the adsorbed moisture contacts with the hydrophobic layer of the inner layer, the adsorbed moisture cannot be soaked inside through the action of the hydrophobic layer, and then the adsorbed moisture is discharged and stays on the water absorption layer of the surface, and can be quickly dried, so that the prepared clothes can quickly adsorb sweat during sweating, and the sweat cannot be soaked inside the fiber after adsorbing the sweat, is difficult to dry, so that the wearing is uncomfortable, the sweat can be quickly dried on the surface of the water absorption layer, the sweat absorption comfort of the clothes is realized, and the phenolic hydroxyl ammonium chloride group is contained in the preparation process of the, the polymer generated after polymerization contains a large number of ammonium chloride groups, so that the water absorbing layer of the outer layer contains a large number of ammonium chloride groups, the antibacterial performance is high, the sweat stain of the outer layer can be sterilized, the surface of the waterproof layer of the inner layer is loaded with a large number of silver ions, the inner layer can be sterilized through the silver ions when the sweat stain contacts the inner layer, and the thorough sterilization effect inside and outside the fabric is realized;

the specific preparation process of the antibacterial finishing agent is as follows:

step 1: adding resorcinol into water, simultaneously adding hydrochloric acid to adjust the pH value of the solution to 1, then adding formaldehyde and acethydrazide trimethyl ammonium chloride into a reaction container, heating to 60-70 ℃, stirring for reaction for 10-12h, then evaporating to remove the solvent in the solution, and washing to be neutral to obtain phenol hydroxyl ammonium chloride; wherein resorcinol, formaldehyde and acethydrazide trimethyl ammonium chloride are prepared according to the mass amount of 1: 1: 1, mixing and preparing;

step 2: adding the phenol hydroxyl ammonium chloride prepared in the step 1 into water, stirring and dissolving, then adjusting the pH value of the solution to 13, then adding a formaldehyde solution with the mass fraction of 37%, heating to 50-60 ℃, stirring and reacting for 2-3h, then adding the formaldehyde solution with the mass fraction of 37% into a reaction container, heating to 100-110 ℃, performing reflux reaction for 5-6h, then performing reduced pressure distillation, and removing the solvent and unreacted formaldehyde to obtain a solid product; 0.35-0.37g of formaldehyde solution is added into every gram of phenol hydroxyl ammonium chloride for the first time, and 0.62-0.65g of formaldehyde solution is added into every gram of phenol hydroxyl ammonium chloride for the second time;

and step 3: adding the prepared solid product into hot water of 100 ℃, stirring and dissolving, simultaneously adding polyvinyl alcohol, stirring and mixing uniformly to obtain the antibacterial finishing agent; adding 8mL of water into each gram of solid product, and adding 0.32-0.33g of polyvinyl alcohol;

and fifthly, spinning the antibacterial comfortable cotton fiber prepared in the fourth step into yarn, and then spinning the yarn into fabric to obtain the cotton-based antibacterial composite fabric.

The invention has the beneficial effects that:

1. according to the invention, the surface of the fiber is firstly loaded with the antibacterial hydrophobic layer, and then the surface of the antibacterial hydrophobic layer is loaded with the porous water absorbing layer, so that the instant absorption effect of the cotton fiber is realized, the water absorption rate of the cotton fiber is improved, sweat is trapped between the water absorbing layer and the hydrophobic layer by the hydrophobic layer after penetrating through the water absorbing layer and is not permeated in the center of the fiber, and the water absorbing layer on the outer layer contains a large number of gaps, so that the quick drying performance of the cotton fiber can be realized, the problem that the quick absorption effect of the cotton fiber can not be realized although the water absorbing and sweat absorbing capacity of the cotton fiber is strong, and sweat stains are hardly dried in the fiber after the sweat absorbing of the cotton fiber, so that clothes are wet and uncomfortable to wear next to the skin is solved.

2. According to the invention, the water absorbing layer loaded on the surface of the fiber contains a large amount of ammonium chloride groups, so that the antibacterial property is high, and meanwhile, the silver ions loaded on the surface of the hydrophobic layer in the fiber have high bactericidal property, so that the fabric prepared by the fabric has antibacterial property inside and outside, and the problem that after sweat is soaked in the fiber, so that bacteria are bred in the fiber center of the fabric, and the clothes have peculiar smell is solved.

3. According to the invention, after the hydrophobic antibacterial agent is coated on the surface of the cotton fiber, the cotton fiber has stronger hydrophobicity, so that the cotton fiber does not shrink after washing due to the fixing effect of the hydrophobic layer during washing.

Detailed Description