CN105040241B - A kind of preparation method of antibacterial blended yarn weaved fabric - Google Patents

Abstract

The preparation method that the present invention relates to a kind of antibacterial blended yarn weaved fabric, first by cotton for cotton for the warp thread 50%/30% Caulis et Folium Lini/20% bamboo fibre * weft yarn 100% blended yarn weaved fabric grafting one chloro-s-triazine-beta-schardinger dextrin-formed that interweaves, then the blended yarn weaved fabric after one chloro-s-triazine-grafted by beta cyclodextrin is put into the silver nitrate solution dipping 60min of 0.01-10g/L, two leachings two are rolled, and put into heating 8min in the microwave oven of 600W and can obtain antibacterial blended yarn weaved fabric。The present invention, with cotton/Caulis et Folium Lini/bamboo fiber blended fabric for base material, utilizes the one chloro-s-triazine-grafted by beta cyclodextrin method in-situ preparation nanometer silver antimicrobial blended yarn weaved fabric by microwave radiation, and the antibacterial blended yarn weaved fabric prepared has the antibacterial and washing fastness of excellence。

Description

A kind of preparation method of antibacterial blended fabric

technical field

The invention belongs to the field of textiles, in particular to a method for preparing an antibacterial blended fabric.

Background technique

Although natural cellulose has the advantages of wearing comfort, renewability and biodegradability, but in the process of taking, because the fiber has a large specific surface area and strong moisture absorption capacity, fiber products are very easy to attach microorganisms, and for Its reproduction and propagation create conditions that cause damage to fiber strength, stains and discoloration, unpleasant odors, and even the spread of diseases, affecting human health. Therefore, in the research on the modification of cellulose, an important research direction is to realize the antibacterial properties of cellulose and reduce the damage of bacteria to the human body. Nano-silver is often used as an antibacterial finishing agent due to its safe, non-toxic and efficient antibacterial properties, and its long-lasting and stable antibacterial properties, strong adaptability, and not easy to produce drug resistance have dominated the application of inorganic antibacterial finishing agents. status.

The preparation methods of nano-silver antibacterial textiles mainly include fiber modification and fabric finishing. The fiber modification method is to first add nano-silver to the fiber-forming polymer, then perform wet or melt spinning, and then process it into an antibacterial fabric; fabric finishing is to coat or impregnate the surface of the fabric to make it A nano-silver antibacterial layer is formed on the surface of the textile material. Natural fibers such as cotton and silk are soft in texture, have good affinity to human skin, and have good moisture absorption, breathability, and regeneration properties. They are widely favored by people and occupy an absolute position in people's daily life textiles. And the modification of this natural fiber can only endow it with antibacterial properties by finishing method. At present, there are many methods for preparing antibacterial fabrics by post-finishing, such as impregnation adsorption, multi-layer deposition, sol-gel coating, polymer hybrid coating, supercritical carbon dioxide, etc. In these methods, simple physical adsorption is often not fast enough, and the use of cross-linking agents or polymer coatings to increase its fastness will cause the loss of the original excellent hand feel of the fabric, affinity to human skin, etc., and these chemical reagents The use of non-woven fabrics will not only pollute the environment, but also cause potential harm to the human body when it is finished on the fabric.

The in-situ generation technology can simultaneously generate nanomaterials on the surface and inside of the fiber, and distribute them evenly on the fiber. Moreover, the preparation of the nanometer material and the finishing of the textile material are carried out simultaneously, thereby avoiding the problem of agglomeration of the nanometer material during the finishing process. Moreover, the in-situ generation technology makes the natural combination of nanomaterials and fibers high. Therefore, the in-situ generation of nano-silver antibacterial finishing technology has attracted more and more attention from researchers because of its high efficiency, simplicity, and environmental protection.

Cyclodextrin is a cyclic oligosaccharide that contains 6, 7, 8 or more glucose units, which are formed by the degradation of starch by cyclodextrin glucosyltransferase, and are connected to each other by α-1,4 glycosidic bonds. . There are three common cyclodextrins: α-cyclodextrin (α-CD), β-cyclodextrin (β-CD) and γ-cyclodextrin (γ-CD), which are composed of 6, 7, and 8 glucose A cyclic oligosaccharide formed by linking monomers at C-1 and C-4. And monochlorotriazine-β-cyclodextrin (MCT-β-CD) is a cyclodextrin derivative with a special active group, non-toxic and non-allergic to the skin. The chlorotriazine active group in its molecular structure has strong reactivity to nucleophilic groups (such as hydroxyl oxyanions, amino groups, etc.), and after the two react to form a covalent bond, the cyclodextrin parent can be permanently Fixes to fabric fibers.

Chinese invention patent 201010166358.3 mixes an aqueous solution of alkylated cyclodextrin with a mass percentage of 0.1% to 10% and a silver ammonia solution with a mass molar concentration of 0.01 to 1.0mol/L at a volume ratio of 1:100 to 1:10, Stirring for 1-120 min under the temperature condition of 10-100 DEG C, namely obtaining nano-silver colloid solution with an average particle diameter of 1-100 nm. Liu Jiaojiao et al. (Textile Herald, 2013, 03:74-76, Research on Cotton Fabric Finishing with Cyclodextrin/Nano-Silver [D]. Soochow University, 2013) obtained nano Silver solution, and using nano-silver colloid solution to antibacterial finishing of pure cotton fabric, tested the antibacterial performance of cotton fabric after finishing. However, these documents all adopt the direct impregnation and adsorption method to process cotton fibers, but the fastness of inorganic nanomaterials is low due to the lack of valence bonds with fabrics.

Contents of the invention

The invention aims at providing a method for preparing antibacterial blended fabrics aiming at the deficiencies in the prior art.

The present invention is achieved through the following technical solutions:

The blended fabric is formed by interweaving warp and weft yarns, the warp yarns are 50% cotton/30% linen/20% lyocelllyocell bamboo fiber, the weft yarns are 100% cotton, and the linear density of the warp and weft yarns is 18.2*18.2tex, the tissue Structure 3/1 twill, width 60cm, tightness 77.04%, thickness 0.5mm, fabric density 344*264/(root·(10cm) ^-1 ). Put the above blended fabric in 1-100g/L monochloro-s-triazine-β-cyclodextrin solution and soak for 1h, the bath ratio is 1:50, adjust the pH of the solution to 10-11 with sodium carbonate, and dip twice Rolling, with a liquid rate of 95%, pre-baking at 80°C for 3 minutes, baking at 120°C for 5 minutes, and then washing at 60°C for 15 minutes. Immerse the blended fabric grafted with monochloro-s-triazine-β-cyclodextrin in 0.01-10g/L silver nitrate solution for 60min, the bath ratio is 1:50, two dipping and two rolling, the pressure is 1kg/m ² , The liquid-carrying rate is 90%, pre-baked in a blast oven at 95°C for 8 minutes, stagnant for 1 minute, then pre-baked in a blast oven at 95°C for 10 minutes, and then baked at 170°C for 5 minutes, from the solution After taking it out, heat it in a 600W microwave oven for 8 minutes.

The present invention has following beneficial effect:

The invention uses the cotton/flax/bamboo fiber blended fabric as the base material, utilizes monochloro-s-triazine-β-cyclodextrin to graft and microwave radiation to generate nano-silver antibacterial blended fabric in situ.

(1) Microwave in-situ generated finishing can be more generated inside the fabric or fiber, which is beneficial to improve its washability.

(2) Microwave in-situ finishing is to absorb the initial liquid into the fabric before finishing. After finishing, the fabric is dried without any residual substances, and the initial liquid can be used continuously, which is beneficial to cost saving.

(3) Microwave in-situ generation, finishing and heating have fast response, high efficiency, safety and convenience.

(4) The cross-linking reaction between cellulose and monochlorotriazine-β-cyclodextrin produces monochlorotriazine-β-cyclodextrin grafted cellulose. The binding fastness between oxazine-β-cyclodextrin and cellulose is greatly improved.

(5) The preparation of nano-silver and the finishing of cellulose can be carried out at the same time, which avoids the problem of agglomeration of nano-silver in the finishing process.

detailed description

The present invention will be further described below in combination with specific embodiments.

Example 1:

The blended fabric is formed by interweaving warp and weft yarns, the warp yarns are 50% cotton/30% linen/20% lyocell bamboo fiber, the weft yarns are 100% cotton, the linear density of the warp and weft yarns is 18.2*18.2tex, and the structure is 3 /1 twill, width 60cm, tightness 77.04%, thickness 0.5mm, fabric density 344*264/(root·(10cm) ^-1 ).

Put the above blended fabric in 10g/L monochloro-s-triazine-β-cyclodextrin solution and immerse it for 1h, the bath ratio is 1:50, adjust the pH of the solution to 10 with sodium carbonate, dipping and rolling twice, with liquid The rate is 95%, pre-baked at 80°C for 3 minutes, baked at 120°C for 5 minutes, and then washed with water at 60°C for 15 minutes. Immerse the blended fabric grafted with monochloro-s-triazine-β-cyclodextrin in 0.1g/L silver nitrate solution for 60 minutes, bath ratio 1:50, two dipping and two rolling, the pressure is 1kg/m ² , with The liquid rate is 90%, pre-baked in a blast oven at 95°C for 8 minutes, stagnated for 1 minute, then pre-baked in a blast oven at 95°C for 10 minutes, then baked at 170°C for 5 minutes, and removed from the solution Finally, put it into a 600W microwave oven and heat it for 8min.

Example 2:

The blended fabric is formed by interweaving warp and weft yarns, the warp yarns are 50% cotton/30% linen/20% lyocell bamboo fiber, the weft yarns are 100% cotton, the linear density of the warp and weft yarns is 18.2*18.2tex, and the structure is 3 /1 twill, width 60cm, tightness 77.04%, thickness 0.5mm, fabric density 344*264/(root·(10cm) ^-1 ).

Put the above blended fabric in 50g/L monochloro-s-triazine-β-cyclodextrin solution and immerse it for 1h, the bath ratio is 1:50, adjust the pH of the solution to 11 with sodium carbonate, double dipping and rolling, with liquid The rate is 95%, pre-baked at 80°C for 3 minutes, baked at 120°C for 5 minutes, and then washed with water at 60°C for 15 minutes. Immerse the blended fabric grafted with monochloro-s-triazine-β-cyclodextrin in 5g/L silver nitrate solution for 60min, bath ratio 1:50, double dipping and rolling, pressure 1kg/m ² , with liquid The rate is 90%, pre-baked in a blast oven at 95°C for 8 minutes, stagnant for 1 minute, then pre-baked in a blast oven at 95°C for 10 minutes, and then baked at 170°C for 5 minutes, after taking it out of the solution , Put it into a 600W microwave oven and heat for 8min.

Example 3:

The blended fabric is formed by interweaving warp and weft yarns, the warp yarns are 50% cotton/30% linen/20% lyocell bamboo fiber, the weft yarns are 100% cotton, the linear density of the warp and weft yarns is 18.2*18.2tex, and the structure is 3 /1 twill, width 60cm, tightness 77.04%, thickness 0.5mm, fabric density 344*264/(root·(10cm) ^-1 ).

Put the above blended fabric in 100g/L monochloro-s-triazine-β-cyclodextrin solution and soak for 1h, the bath ratio is 1:50, adjust the pH of the solution to 11 with sodium carbonate, double dipping and rolling, with liquid The rate is 95%, pre-baked at 80°C for 3 minutes, baked at 120°C for 5 minutes, and then washed with water at 60°C for 15 minutes. Immerse the blended fabric grafted with monochloro-s-triazine-β-cyclodextrin in 10g/L silver nitrate solution for 60 minutes, bath ratio 1:50, double dipping and rolling, pressure 1kg/m ² , with liquid The rate is 90%, pre-baked in a blast oven at 95°C for 8 minutes, stagnant for 1 minute, then pre-baked in a blast oven at 95°C for 10 minutes, and then baked at 170°C for 5 minutes, after taking it out of the solution , Put it into a 600W microwave oven and heat for 8min.

Apparently, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the implementation of the present invention. For those of ordinary skill in the art, on the basis of the above description, other changes or changes in different forms can also be made. All the implementation manners cannot be exhaustively listed here. All obvious changes or changes derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims (5)

1. the preparation method of an antibacterial blended yarn weaved fabric, it is characterised in that:

(1) described blended yarn weaved fabric is formed by warp and weft interweaving, described warp thread is 50% cotton/30% Caulis et Folium Lini/20% bamboo fibre, described weft yarn is 100% cotton, the described line density through weft yarn is 18.2*18.2tex, organizational structure 3/1 twill, fabric width 60cm, tightness 77.04%, in thickness 0.5mm, 10cm width, the radical of warp thread is 344, and the radical of weft yarn is 264；

(2) being placed in by above-mentioned blended yarn weaved fabric in the beta-schardinger dextrin-solution of 1-100g/L and impregnate 1h, bath raio 1:50, with sodium carbonate, the pH of solution is adjusted to 10-11, two leachings two are rolled, liquid carrying rate 95%, 80 DEG C of preliminary drying 3min, and 120 DEG C bake 5min, then 60 DEG C of washing 15min；

(3) being put into by the blended yarn weaved fabric after grafted by beta cyclodextrin certain density silver nitrate solution dipping certain time, bath raio 1:50, two leachings two are rolled, and pressure is 1kg/m², liquid carrying rate is 90%, preliminary drying 8min in the convection oven that temperature is 95 DEG C, stagnates 1min, then in the convection oven that temperature is 95 DEG C preliminary drying 10min, then bake 5min at 170 DEG C, after taking out from solution, put into heating 8min in the microwave oven of 600W。

2. the preparation method of a kind of antibacterial blended yarn weaved fabric according to claim 1, it is characterised in that described bamboo fibre is lyocell bamboo fibre。

3. the preparation method of a kind of antibacterial blended yarn weaved fabric according to claim 1, it is characterised in that described-beta-schardinger dextrin-is one chloro-s-triazine-beta-schardinger dextrin-。

4. the preparation method of a kind of antibacterial blended yarn weaved fabric according to claim 1, it is characterised in that the concentration of step (3) described silver nitrate solution is 0.01-10g/L。

5. the preparation method of a kind of antibacterial blended yarn weaved fabric according to claim 1, it is characterised in that step (3) described dip time is 60min。