阅读说明：本技术 一种抗菌防护服整理工艺 (Finishing process of antibacterial protective clothing ) 是由 余也 潘跃 张建兵 于 2020-05-25 设计创作，主要内容包括：本发明公开了一种抗菌防护服整理工艺,涉及由涤纶无纺布制成的防护服,包括如下步骤：S1预处理：将防护服浸入预处理液中,温度40-50℃,处理15-20min,完成后取出,水洗烘干待用；S2丝素蛋白整理：防护服经过S1预处理后浸入丝素蛋白整理液中,二浸二轧,再于75-80℃下预烘3-5min,接着于140-160℃下焙烘60-90s,最后水洗烘干待用；S3抗菌整理：防护服经过S2丝素蛋白整理后浸入抗菌整理液中,温度50-60℃,取出后于130-140℃下焙烘90-120s,最后水洗烘干待用；S4清洗：防护服经过S3抗静电整理后,依次皂洗、水洗,水温40-50℃,最后烘干。经本发明整理后的防护服多次洗涤后仍能保持优良的抗菌性。(The invention discloses a finishing process of antibacterial protective clothing, which relates to protective clothing made of polyester non-woven fabric, and comprises the following steps: s1 pretreatment: immersing the protective clothing in the pretreatment liquid at 40-50 deg.C for 15-20min, taking out, washing with water, and oven drying; s2 finishing silk fibroin: the protective clothing is pretreated by S1, then is immersed into the silk fibroin finishing liquid, is soaked for two times and rolled for two times, is pre-dried for 3-5min at the temperature of 75-80 ℃, is then dried for 60-90S at the temperature of 140-160 ℃, and is finally washed and dried for standby application; s3 antibacterial finishing: after being finished by S2 silk fibroin, the protective clothing is soaked in the antibacterial finishing liquid at the temperature of 50-60 ℃, taken out and then baked for 90-120S at the temperature of 130-140 ℃, and finally washed and dried for later use; s4 cleaning: after S3 antistatic finishing, the protective clothing is sequentially soaped and washed with water at the water temperature of 40-50 ℃, and finally dried. The protective clothing finished by the invention can still keep excellent antibacterial property after being washed for many times.)

1. A finishing process of antibacterial protective clothing is characterized by comprising the following steps:

s1 pretreatment: immersing the protective clothing in the pretreatment liquid at 40-50 deg.C for 15-20min, taking out, washing with water, and oven drying;

s2 finishing silk fibroin: the protective clothing is pretreated by S1, then is immersed into the silk fibroin finishing liquid, is soaked for two times and rolled for two times, is pre-dried for 3-5min at the temperature of 75-80 ℃, is then dried for 60-90S at the temperature of 140-160 ℃, and is finally washed and dried for standby application;

s3 antibacterial finishing: after being finished by S2 silk fibroin, the protective clothing is soaked in the antibacterial finishing liquid at the temperature of 50-60 ℃, taken out and then baked for 90-120S at the temperature of 130-140 ℃, and finally washed and dried for later use;

s4 cleaning: after S3 antistatic finishing, soaping and washing the protective clothing in sequence with water temperature of 40-50 ℃, and finally drying;

the preparation process of the antibacterial finishing liquid is as follows:

firstly, uniformly mixing 10-15 parts of KH570, 15-20 parts of deionized water and 30-40 parts of absolute ethyl alcohol, then adding 15-20 parts of silver-loaded titanium dioxide, carrying out ultrasonic dispersion for 20-30min, then heating to 70-80 ℃, refluxing for 2-3h, and finally filtering, washing with ethanol, drying and grinding to obtain a pre-product;

and secondly, uniformly mixing 3-4 parts of the pre-product, 100-120 parts of deionized water, 0.4-0.6 part of OP-10, 0.4-0.6 part of sodium dodecyl sulfate and 10-12 parts of butyl acrylate, heating to 45-55 ℃, reacting for 20-30min, adding 0.01-0.02 part of initiator KPS, continuously heating to 70-80 ℃, reacting for 20-30min, then adding 3-4 parts of butyl acrylate, 8-10 parts of methyl methacrylate, 4-5 parts of dodecafluoroheptyl methacrylate and 0.02-0.04 part of initiator KPS, continuously reacting for 2-3h, finally cooling and discharging, and adjusting the pH value to 6-7 to obtain the antibacterial finishing liquid.

2. The finishing process of the antibacterial protective clothing according to claim 1, characterized in that: the preparation process of the silver-loaded titanium dioxide comprises the following steps: according to the weight portion, 5-6 portions of titanium dioxide and 35-40 portions of 0.1mol/L silver nitrate solution are mixed and stirred uniformly for 15-20min, 15-20 portions of 0.1mol/L sodium carbonate solution and 0.1-0.2 portion of EDTA are added, the mixture is irradiated under an ultraviolet light source and stirred for 1-2h, and finally the mixed solution is washed by deionized water, filtered, dried and ground to obtain the silver-carrying titanium dioxide.

3. The finishing process of the antibacterial protective clothing according to claim 1, characterized in that: the particle size of the silver-loaded titanium dioxide is 20-30 nm.

4. The finishing process of the antibacterial protective clothing according to claim 1, characterized in that: the pretreatment liquid comprises 10-15g/L hydrogen peroxide, 10-15g/L sodium hydroxide and 1-1.5g/L penetrant JFC.

5. The finishing process of the antibacterial protective clothing according to claim 4, characterized in that: the pretreatment liquid also comprises 3-aminopropyltrimethoxysilane of 3-4 g/L.

6. The finishing process of the antibacterial protective clothing according to claim 1, characterized in that: the silk fibroin finishing liquid comprises the following components in parts by weight: 13-18 parts of silk peptide powder, 20-25 parts of cross-linking agent, 2-4 parts of triethanolamine, 5-8 parts of magnesium chloride and 250 parts of water 200-.

7. The finishing process of the antibacterial protective clothing according to claim 6, characterized in that: the cross-linking agent is genipin.

8. The finishing process of the antibacterial protective clothing according to claim 6, characterized in that: the silk fibroin finishing liquid also comprises 2-3 parts of cerium nitrate.

Technical Field

The invention relates to the technical field of protective clothing, in particular to an antibacterial protective clothing finishing process.

Background

Protective clothing is classified into antibacterial clothing, cold protective clothing, radiation protective clothing, antistatic clothing and the like according to different protective functions. The antibacterial clothes are mainly suitable for clean workshops in the industries of electronics, pharmacy, food and the like, and can also be used in medical institutions, sterile laboratories and the like.

Chinese patent No. CN101638846B discloses an antibacterial antistatic multifunctional nonwoven fabric, which is prepared by unreeling nonwoven grey fabric, applying a finishing agent through an ultrasonic foam applying machine, extruding the redundant finishing agent through a rolling mill, drying through an oven, and reeling, wherein the finishing agent comprises the following components: sodium dodecyl sulfate, hydroxyethyl cellulose, nano silver powder, a penetrating agent JFC, nano silicon dioxide, gamma-aminopropyl triethoxysilane, sorbitan ester, hexadecyl trimethyl ammonium chloride, methacrylic acid, beta-cyclodextrin and perfume.

The technical scheme is that nano silver is combined on non-woven grey cloth through an arrangement method, and the strong inhibition and killing effects of the nano silver on microorganisms are utilized to realize antibiosis. However, the method still has the following defects: the crosslinking property between the nano silver and the non-woven grey cloth is poor, the nano silver is easy to fall off after being washed for many times, and the antibacterial property is greatly reduced to be improved.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide an antibacterial protective clothing finishing process, and the protective clothing has excellent antibacterial property and washability.

The above object of the present invention is achieved by the following technical solutions:

a finishing process of antibacterial protective clothing, which is made of polyester non-woven fabric, comprises the following steps:

s1 pretreatment: immersing the protective clothing in the pretreatment liquid at 40-50 deg.C for 15-20min, taking out, washing with water, and oven drying;

s2 finishing silk fibroin: the protective clothing is pretreated by S1, then is immersed into the silk fibroin finishing liquid, is soaked for two times and rolled for two times, is pre-dried for 3-5min at the temperature of 75-80 ℃, is then dried for 60-90S at the temperature of 140-160 ℃, and is finally washed and dried for standby application;

s3 antibacterial finishing: after being finished by S2 silk fibroin, the protective clothing is soaked in the antibacterial finishing liquid at the temperature of 50-60 ℃, taken out and then baked for 90-120S at the temperature of 130-140 ℃, and finally washed and dried for later use;

s4 cleaning: after S3 antistatic finishing, soaping and washing the protective clothing in sequence with water temperature of 40-50 ℃, and finally drying;

the preparation process of the antibacterial finishing liquid is as follows:

firstly, uniformly mixing 10-15 parts of KH570, 15-20 parts of deionized water and 30-40 parts of absolute ethyl alcohol, then adding 15-20 parts of silver-loaded titanium dioxide, carrying out ultrasonic dispersion for 20-30min, then heating to 70-80 ℃, refluxing for 2-3h, and finally filtering, washing with ethanol, drying and grinding to obtain a pre-product;

and secondly, uniformly mixing 3-4 parts of the pre-product, 100-120 parts of deionized water, 0.4-0.6 part of OP-10, 0.4-0.6 part of sodium dodecyl sulfate and 10-12 parts of butyl acrylate, heating to 45-55 ℃, reacting for 20-30min, adding 0.01-0.02 part of initiator KPS, continuously heating to 70-80 ℃, reacting for 20-30min, then adding 3-4 parts of butyl acrylate, 8-10 parts of methyl methacrylate, 4-5 parts of dodecafluoroheptyl methacrylate and 0.02-0.04 part of initiator KPS, continuously reacting for 2-3h, finally cooling and discharging, and adjusting the pH value to 6-7 to obtain the antibacterial finishing liquid.

By adopting the technical scheme, the protective clothing is pretreated by S1 to remove impurities mixed in the fibers, so that subsequent finishing is convenient; after S2 silk fibroin arrangement, a layer of silk fibroin film is tightly coated on the surface of the polyester fiber; after S3 antibacterial finishing, a large amount of silver-loaded titanium dioxide is attached to the silk fibroin film; and cleaning by S4 to obtain the final product.

The nano titanium dioxide can generate conduction band electrons, valence band holes and the like under the excitation of light to form an oxidation-reduction system, so that the nano titanium dioxide has the function of killing bacteria, and can be used as a carrier to load nano silver. The nano silver has strong inhibiting and killing effects on microorganisms, and the bactericidal effect of the loaded nano titanium dioxide is improved. After the silver-loaded titanium dioxide is modified, on one hand, the dispersing effect is greatly improved, the aggregation is not easy, on the other hand, the adhesive force of the silver-loaded titanium dioxide to silk fibroin is improved, the shedding is not easy, and the washability of the protective clothing after finishing is effectively improved.

The present invention in a preferred example may be further configured to: the preparation process of the silver-loaded titanium dioxide comprises the following steps: according to the weight portion, 5-6 portions of titanium dioxide and 35-40 portions of 0.1mol/L silver nitrate solution are mixed and stirred uniformly for 15-20min, 15-20 portions of 0.1mol/L sodium carbonate solution and 0.1-0.2 portion of EDTA are added, the mixture is irradiated under an ultraviolet light source and stirred for 1-2h, and finally the mixed solution is washed by deionized water, filtered, dried and ground to obtain the silver-carrying titanium dioxide.

By adopting the technical scheme, the silver-loaded titanium dioxide is prepared by adopting a photocatalysis method, and the preparation method has the advantage that silver is uniformly distributed on the surface of the titanium dioxide. EDTA is added as a catalyst, so that the loading capacity of silver is greatly improved.

The present invention in a preferred example may be further configured to: the particle size of the silver-loaded titanium dioxide is 20-30 nm.

By adopting the technical scheme, the antibacterial property of the silver-loaded titanium dioxide is fully exerted under the particle size, and the bactericidal effect is strong.

The present invention in a preferred example may be further configured to: the pretreatment liquid comprises 10-15g/L hydrogen peroxide, 10-15g/L sodium hydroxide and 1-1.5g/L penetrant JFC.

By adopting the technical scheme, the protective clothing is good in cleaning and bleaching effect, and the finishing process can be smoothly carried out.

The present invention in a preferred example may be further configured to: the pretreatment liquid also comprises 3-aminopropyltrimethoxysilane of 3-4 g/L.

By adopting the technical scheme, the 3-aminopropyl trimethoxy silane has reactivity and can be crosslinked with polyester fibers, so that the adhesive force of the silk fibroin film is improved, and the washability of the protective clothing is improved.

The present invention in a preferred example may be further configured to: the silk fibroin finishing liquid comprises the following components in parts by weight: 13-18 parts of silk peptide powder, 20-25 parts of cross-linking agent, 2-4 parts of triethanolamine, 5-8 parts of magnesium chloride and 250 parts of water 200-.

By adopting the technical scheme, the silk fibroin finishing liquid is ecological and environment-friendly, wastewater, waste gas and the like cannot be generated in the finishing process, the silk fibroin macromolecular chains are continuously split to generate low-molecular polypeptides, the low-molecular polypeptides easily enter the interior of the fibers and form hydrogen bonds, salt bonds, van der waals force and the like with active groups in the wool fibers, so that a silk fibroin film is formed on the surfaces of the wool fibers. The fibroin is natural high molecular fibrin extracted from silk, has unique molecular structure, good antimicrobial property, moisture absorption property and moisture retention property, and is mainly used as an adsorption film for adsorbing nano titanium dioxide.

The present invention in a preferred example may be further configured to: the cross-linking agent is genipin.

By adopting the technical scheme, genipin is an excellent natural biological cross-linking agent, can replace glutaraldehyde, and is used for tightly combining silk fibroin and wool fibers.

The present invention in a preferred example may be further configured to: the silk fibroin finishing liquid also comprises 2-3 parts of cerium nitrate.

By adopting the technical scheme, the silk fibroin film and the cerium ions are coordinated, so that the solubility of the silk fibroin film is reduced, and the washability of the wool fabric is improved.

In summary, the invention includes at least one of the following beneficial technical effects:

1. after the protective clothing is subjected to antibacterial finishing, a large amount of silver-loaded titanium dioxide is attached to the surface of the protective clothing, so that the protective clothing has excellent bactericidal and bacteriostatic effects and meets the protection requirements;

2. the protective clothing is finished by silk fibroin, and the silver-loaded titanium dioxide is attached by utilizing a silk fibroin film, so that the adhesive force and the attachment quantity of the silver-loaded titanium dioxide can be improved;

3. cerium nitrate is added into the silk fibroin finishing liquid, so that the silk fibroin film is not easy to lose, and the washability of the wool fabric is improved.

Drawings

Fig. 1 is a schematic flow chart of the first to third embodiments.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiment of the invention adopts the following raw materials:

silk peptide powder was purchased from xintiansi biotechnology limited, lake.

The nano titanium dioxide is TA18, and is purchased from Shanghai titanium pigment industry Co.