64results about How to "Efficient and durable antibacterial" patented technology

The invention relates to a method for preparing a nano silver-containing anti-bacterial fabric by an immersion process. The method comprises the following steps: dissolving dopamine hydrochloride in Tris buffer solution; adjusting the pH value of solution to be between 7 and 10 by using hydrochloric acid; immerging a fabric into prepared dopamine solution in a bath ratio of 1:30; after stirring for reacting at the temperature of between 20 and 40 DEG C for 20 to 30 hours, taking the fabric out and washing to obtain a poly dopamine film-coated fabric; putting the fabric into silver nitrate aqueous solution; and after immerging for 8 to 10 hours, washing and drying the fabric to obtain the nano silver-containing fabric. The nano silver-containing fabric prepared by the method has the characteristics of high soaping fastness resistance and lasting antibiotic property; a sterilizing rate is still up to 100 percent after the fabric is washed with water for 30 times; and the preparation method has the characteristics of simple process, no pollution to the environment, low cost and large-scale production.

The invention provides a nano coating and a preparation method thereof. The nano coating contains an emulsion, nano titanium dioxide and nano silver, wherein the nano silver is loaded on the surface of the nano titanium dioxide, and the weight ratio of te nano silver to the nano titanium dioxide is 1:5-8. In the preparation method of the nano coating, the nano silver is loaded on the surface of the nano titanium dioxide to reduce the agglomeration reaction of the nano silver so that the nano coating has efficient and lasting antibacterial performance.

The invention discloses a water-soluble antibacterial monocarboxylic chitosan as well as a preparation method and application thereof. The preparation method of the monocarboxylic chitosan is characterized by comprising the following steps: dissolving macromolecular chitosan in a diluted acetic acid solution, and then selectively oxidizing part or all of hydroxyl groups at the C6 site of the chitosan into carboxyl groups by utilizing a concentrated nitric acid-concentrated phosphoric acid-sodium nitrite system, thereby obtaining the monocarboxylic chitosan. The water-soluble antibacterial monocarboxylic chitosan disclosed by the invention can be used for carrying out amide modification on real silk fabrics so as to obtain monocarboxylic chitosan amide modified real silk fabrics. The method disclosed by the invention is simple in operation, high in reaction speed and easy to control, the prepared monocarboxylic chitosan amide modified real silk fabrics have lasting and efficient antibacterial activity and good wearability and are environment-friendly, and the negative effects on good real silk characteristics and human health caused by using chemical crosslinking agents in conventional chitosan modification are overcome.

The invention discloses a preparation method of copper-ion antibacterial and anti-ultraviolet finishing agent. The method is characterized in that the reagent dosage, namely the adding ratios of copper sulfate and sodium hydroxide reacting in preparation can be determined according to the ratios of alkaline copper ammonia and salt copper ammonia in an antibacterial agent. A fiber reaction interval is easy to operate by the alkaline copper ammonia, so that copper ammonia chelate ions are easily provided for complex reaction by the salt copper ammonia; and due to the introduction of the copper ammonia ions, the fabric easily develops the antibacterial property. The chitosan and cotton blended fabric are complexly finished by employing the obtained copper ion finishing agent with the optimal ratio; and the parameter conditions of a complexing process are explored to control the complex condition of the copper ions, so that the current situations that the spinnability of a chitosan fiber is poor and the antibacterial property is easily interfered are solved.

The invention relates to a high-molecular polymer antibacterial masterbatch based on a one-dimensional nanometer Ag/C composite material and a preparation method thereof, belonging to the technical field of high-tech functional composite materials. The high-molecular polymer antibacterial masterbatch is prepared from 36 to 88 parts of a high-molecular polymer, 5 to 25 parts of micro-nano inorganicpowder, 5 to 20 parts of a one-dimensional nanometer Ag/C composite material, 5 to 19 parts of an auxiliary agent and the like through blending, plasticizing, mixing, extruding, drawing, cooling andgranulation. According to the invention, the one-dimensional nanometer Ag/C composite material is fully and effectively dispersed, so the one-dimensional nanometer Ag/C composite material is preventedfrom failures due to agglomeration and allowed to maintain long-lasting antibacterial effect, and can be effectively applied to the high-molecular polymer. The high-molecular polymer antibacterial masterbatch of the invention has the characteristics of no toxicity and no harm to the body, environmental protection performance, high-efficiency and long-lasting antibacterial performance, excellent performance, a wide application scope, etc., and can be applied to bacterium prevention, bacteriostasis and anticorrosion of high-molecular polymers.

The invention discloses a fragrant detergent for household textiles. The fragrant detergent for the household textiles is prepared from the following raw materials in parts by weight: 2-4 parts of rose essence, 7-14 parts of zinc sulfate, 8-16 parts of methyl acrylate, 1.2-2 parts of essence, 6-12 parts of fatty alcohol-polyoxyethylene ether, 10-16 parts of a petroleum emulsion, 7-10 parts of cetyltrimethylammonium chloride, 8-13 parts of lauryl polyoxyethylene ether sodium sulfate, 2.4-4.6 parts of honeysuckle essential oil, 1-2.1 parts of sodium sulfate, 6-9 parts of a compound surfactant, 8-13 parts of ethyl alcohol and 2-5 parts of hydroxyethyl cellulose. The fragrant detergent for the household textiles is efficient and durable in antibacterial property, excellent in cleaning property, free of influence on the hand feeling of textiles, free of toxicity and harm to the human body and free of pollution to the environment, and is capable of durably scenting fragrant smell.

The invention discloses a preparation method of a visible light compound photocatalyst and a finishing method of cotton fabric by use of the visible light compound photocatalyst. The preparation method comprises steps as follows: step 101), preparing self-doped tin dioxide; step 102), preparing a visible light compound photocatalyst by use of graphene oxide and self-doped tin dioxide; step 103), performing a carboxylation reaction on the prepared visible light compound photocatalyst, and preparing a carboxylic visible light compound photocatalyst. The visible light compound photocatalyst has high efficiency and high activity, and the cotton fabric has efficient and durable anti-ultraviolet, anti-static, antibacterial and self-cleaning performance after being finished with the visible lightcompound photocatalyst.

The present invention provides an antimicrobial yarn and a preparation method thereof. The anti-bacterial yarn has the safety, the non-toxicity and the efficient and lasting antibacterial performanceof graphene while realizing the yarn color selectivity and meeting the textile diversity demand. The preparation method of the antibacterial yarn comprises the steps of firstly, ultrasonically dispersing graphene, inserting hydrophilic groups and dyeing groups into graphene groups under the action of hydrogen bonds, covalent bonds and the like, and uniformly implanting antimicrobial graphene groups into a general yarn in situ under the action of soaking and dyeing; secondly, enhancing combination between the antibacterial graphene groups and the dyeing groups and the yarn again under the action of soaping and color fixing; and finally, performing dewatering and drying to obtain the antibacterial yarn. The preparation method has the advantages of simple process, energy saving and high efficiency, can be used for preparing a product with good consistency and stability, is environment-friendly, fully realizes the sustainable development idea of fine chemical engineering and environmentalprotection, and is suitable for large-scale popularization and application.

The invention discloses a nano antibacterial corrosion-resistant ceramic which comprises an antibacterial glaze layer on the surface of corrosion-resistant ceramic; the antibacterial glaze layer is composed of a ground glaze layer and an antibacterial layer; the antibacterial layer is formed by loading a composite antibacterial agent on nano calcium carbonate; wherein the nano calcium carbonate loaded composite antibacterial agent comprises a nano calcium carbonate carrier and a composite antibacterial agent, the nano calcium carbonate loaded composite antibacterial agent is accumulated at theupper part of a glaze layer, the antibacterial effective component of the composite antibacterial agent is nano antibacterial oxide, and the nano antibacterial oxide is nano magnesium oxide and nanozinc oxide. According to the invention, the nano antibacterial material is added to the outermost surface of the ceramic, excellent antibacterial effect is achieved; the nano calcium carbonate is introduced into the antibacterial layer to serve as a porous carrier of the nano antibacterial agent, so that the adhesive force of the nano antibacterial agent can be remarkably improved, the antibacterial performance is more durable and efficient, meanwhile, the surface appearance decoration effect of the ceramic is not affected, and the antibacterial ceramic can be widely applied to the fields of architectural decoration, domestic ceramics and the like.

The invention discloses an anti-mite and mite-killing ceramic tile which is composed of a ceramic tile body and an anti-mite mite-killing slow-release film layer, the anti-mite mite-killing slow-release film layer is formed by atomizing an anti-mite mite-killing emulsion, spraying the atomized anti-mite mite-killing emulsion onto the ceramic tile body, drying and curing; the anti-mite mite-killingemulsion is prepared from the following raw material components in percentage by weight: 5 to 15 percent of an anti-mite mite-killing effective substance, 3 to 12 percent of a film-forming agent, 2 to 5 percent of an emulsifier, 0.5 to 2 percent of an antifouling agent, 0.2 to 0.5 percent of a preservative and the balance of water. By adjusting the raw material components and proportion of the anti-mite mite-killing emulsion, the anti-mite mite-killing emulsion is suitable for forming the anti-mite mite-killing slow-release film layer on the surface of the ceramic tile body, and the anti-mitemite-killing slow-release film layer has efficient and lasting anti-mite, anti-fouling and antibacterial effects, so that the ceramic tile surface is endowed with efficient, stable and lasting anti-mite, anti-fouling and antibacterial properties. The invention further discloses a preparation method of the anti-mite and mite-killing ceramic tile. The preparation method is simple in operation stepand high in controllability.

The invention relates to the field of coatings, in particular to a nano-coating for a container wall body for a building surface. The nano-coating is characterized by being prepared from the followingraw materials in parts by weight: 1 to 3 parts of nano-titanium dioxide, 1 to 3 parts of nano-zirconium oxide, 50 to 150 parts of aluminum silicate, 30 to 50 parts of glass fibres, 30 to 50 parts ofgypsum powder, 6 to 8 parts of a thickening agent, 6 to 8 parts of a defoaming agent, 1 to 3 parts of a dispersing agent, 15 to 35 parts of propylene glycol, 80 to 150 parts of acrylic acid derivativeresin, 100 to 200 parts of polyurethane and 100 to 300 parts of water.In the nano-coating for the container wall body, provided by the invention, the nano-titanium dioxide is specially added, so thatan agglomeration reaction is reduced, and the nano-coating for the container wall body has the high-efficiency persistent antibacterial property. Meanwhile, in the nano-coating for the container wallbody, provided by the invention, the glass fibres and the gypsum powder is also added, so that the water repellency, the hardness and the adhesive force of the coating are improved, and water volatilizes quickly.