202results about How to "Improve antibacterial function" patented technology

The invention discloses nano-ceramic composite fine polypropylene fiber and the processing method. The fiber contains nano-ceramic powder with 12-45 of 300, polypropylene with 250-270 of 300, polyethylene wax with 2-18 of 300 by weight. The denier of the fiber monofilament is 0.5-1.5D, the breaking strength is more than 2.5cN / dtex. We can get the fiber by the step of nano-ceramic powder aqueous dispersion, pre-dispersed precursor, composite masterbatch, composite sections, and high-speed spinning. The nano-ceramic powder is made up of ZrO2, or ZrO2 and ZrC, or TiO2 and Ag+. This type of fiber can be made of various type of textiles, such as sports apparel, underwear, bedding, shirt, socks and so on. The textiles with the function of launch biological waves of energy, anti-UV, anti-bacterial, absorption and barrier the near-infrared. So that to make the textiles have the function of anti-bacterial, energy health, insulation sunscreen, regenerative thermal insulation, dry and comfortable and so on.

The invention discloses a method for preparing antibacterial paper on the basis of an interlayer self-assembling technology. In the method, cationic polyelectrolyte chitosan biguanide hydrochloride (CGH) with an antibacterial function, and anionic polyelectrolyte carboxymethyl cellulose sodium (CMC) are alternately deposited on the surface of a bleached kraft hardwood fiber to prepare a layered ordered self-assembled multilayer ultrathin film, which can improve the strength property of a paper sheet while endowing the paper sheet with a good antibacterial performance. Through the change of the environment and the technical conditions of an interlayer self-assembling system, multilayer film structures with different properties can be obtained on the surface of the bleached kraft hardwood fiber, the retention of an antibacterial agent on the fiber is improved, and the antibacterial effect of the paper sheet is enhanced; a layered ordered self-assembled nano-film is prepared by taking a negatively-charged fiber as a matrix and controlling the adsorption process of a reverse-phase ion system,; the preparation method is simple in production process, less in equipment investment and high in adaptability; the prepared antibacterial paper has better antibacterial performance and strength property; and antibacterial requirements of household paper and food packaging paper can be met better.

The invention discloses an antibacterial regenerated cellulose fiber and a preparation method thereof, and the antibacterial cellulose fiber contains 0.5 ~ 10wt% of chitosan quaternary ammonium salt, the preparation method comprises the following steps: (1) preparing the chitosan quaternary ammonium salt with deionized water and sodium hydroxide into an antibacterial solution; (2) using cellulose pulp as a raw material to prepare spinning viscose; (3) adding the antibacterial solution to a viscose solution of any step from the yellowing step to before spinning, with the adding amount of the chitosan quaternary ammonium salt being 0.5 ~ 10% of the weight of alpha cellulose in the viscose solution, to obtain an antibacterial spinning viscose solution; and (4) obtaining the antibacterial regenerated cellulose fiber by coagulating bath spinning and drawing molding of the antibacterial spinning viscose solution, and then refining and drying. The antibacterial regenerated cellulose fiber simultaneously has biodegradability, biocompatibility, safety and antibacterial property and other excellent properties, and has better moisture absorption and moisture preservation, crease resistance and softness.

The invention discloses a traditional Chinese medicine composition for preparing a woman health-care viscose fiber, a prepared health-care viscose fiber and a preparation method of the health-care viscose fiber. The traditional Chinese medicine composition comprises the following traditional Chinese medicine components by weight percent: 20-35% of felwort, 15-25% of radix sophorae flavescentis, 15-25% of radix angelicae, 10-20% of flowers carthami and 10-20% of motherwort. The method for preparing the health-care viscose fiber by using the traditional Chinese medicine composition comprises the following steps: dissolving traditional Chinese medicine composition extract powder into an antibacterial health-care solution; heating borneol to melt, and emulsifying into an emulsified liquid; preparing spinning mucilage glue by adopting cellulose pulp as a raw material; adding the antibacterial health-care solution to a viscose solution in any step after yellowing is finished and before spinning is performed, so as to obtain an antibacterial health-care blend viscose solution; spinning and forming, drafting silk and carrying out post-treatment on the antibacterial health-care solution, so as to obtain the health-care viscose fiber; adding a borneol emulsion to the oiling step of after-treatment.

The invention discloses a method for forming a high-anti-bacterial-performance titanium-alloy artificial hip joint. The method includes the following technological steps that (1) CT scanning and layered slicing processing of a patient hip joint data model are carried out; (2) titanium-copper alloy powder is designed and prepared; (3) laser 3D printing forming of a titanium-alloy artificial hip joint is carried out; (4), a titanium-alloy artificial hip joint with micro-nano-size porous structure surface is constructed in situ with the anodic oxidation technology; (5) the anti-bacterial performance of the titanium-alloy artificial hip joint is further improved with the plasma high-temperature nitridation technology; (6) cleaning, sterilizing and drying are carried out, and then packaging is carried out. According to the method, the complex structure and the high anti-bacterial function of the artificial hip joint are integrally manufactured in sufficient cooperation with the laser 3D printing technology, the surface modification technology and the excellent anti-bacterial performance of copper elements. The forming method is simple, outstanding in performance, suitable for personalized customization of the high-anti-bacterial-performance titanium-alloy artificial hip joint, and has good social benefits and economic benefits.

The present invention discloses a traditional Chinese medicine composition for preparing male health viscose fibers, the prepared health viscose fibers and a preparation method thereof. The traditional Chinese medicine composition comprises the following traditional Chinese medicine components, by weight, 25-45% of common cnidium fruit, 25-45% of common curculigo rhizome, 20-40% of beautiful sweetgum fruit, and 10-30% of wild chrysanthemum flower. The method for preparing the health viscose fibers by using the traditional Chinese medicine composition comprises: dissolving traditional Chinese medicine composition extract powder to obtain an antibacterial health solution; heating borneol until being melted, and emulsifying to obtain an emulsifying solution; adopting a cellulose pulp as a raw material to prepare a spinning viscose, and adding the antibacterial health solution to the viscose solution in any steps from the end of yellowing to spinning to obtain an antibacterial health blending viscose solution; and carrying out spinning forming, strand drafting and post-treating on the antibacterial health blending viscose solution to obtain the health viscose fibers, wherein the borneol emulsifying solution is added in the oiling step of post-treating.

The invention discloses a functional composite fiber and a preparation method thereof. The functional composite fiber comprises 15wt%-45wt% of silicon dioxide and 0.5wt%-10wt% of chitosan quaternary ammonium salt. The preparation method comprises the following steps: (1) preparing an antiseptic solution from the chitosan quaternary ammonium salt, deionized water and sodium hydroxide; (2) preparing alkali cellulose from cellulose pulp, yellowing the alkali cellulose and dissolving the yellowed alkali cellulose in a sodium hydroxide solution of the silicon dioxide, wherein the solid content of spinning viscose containing silicon dioxide is 9.5wt%-11.5wt%; (3) adding the antiseptic solution into the viscose solution containing silicon dioxide in any step from yellowing to spinning to prepare a blended viscose solution, wherein the weight of the chitosan quaternary ammonium salt in the added antiseptic solution accounts for 0.5%-10% of that of the solid in the viscose solution; and (4) performing spinning forming and after-treating on the blended viscose solution to obtain the functional composite fiber. The functional composite fiber prepared by the method has both flame retardant and antibacterial properties.

The invention relates to a preparation method of an antibacterial polyvinyl acetal fibre, and the method comprises the following steps of: (1), after uniformly mixing tetrapod-like zinc oxide whiskers and palygorskite fibre, roasting in a vacuum furnace, after cooling, stirring and dispersing sodium hexametaphosphate in absolute ethyl alcohol, then, carrying out atmospheric pressure plasma treatment, ultrasonically dispersing in de-ionized water containing calcium stearate dispersion liquid, taking suspension whiskers in the upper layer of the solution to be filtered, taking a whisker mixed solution, repeating the operation till filtering and purifying, and after filtering and purifying, drying in a vacuum oven, thereby obtaining an antibacterial whisker mixture; (2), taking a titanate coupling agent, diluting and uniformly mixing the titanate coupling agent by using isopropanol, and, after heating, stirring and drying the titanate coupling agent with the antibacterial whisker mixture obtained in the step (1) in a mixing machine; and then, adding a silver antibacterial agent, a silver-loaded zirconium phosphate antibacterial agent, a zeolite antibacterial agent, an EPP (Foamed Polypropylene) bulking agent and calcium stearate, after stirring in the mixing machine, adding a polyvinyl alcohol spinning solution, and stirring at a high speed, thereby obtaining a broad-spectrum antibacterial polyvinyl alcohol spinning solution; and (3), mixing, filtering and defoaming the broad-spectrum antibacterial polyvinyl alcohol spinning solution obtained in the step (2), spinning by using a wet method or a dry method, and carrying out acetalation treatment, thereby obtaining broad-spectrum antibacterial polyvinyl acetal fibre.