117results about How to "Long-lasting antimicrobial activity" patented technology

The invention discloses a preparing method of an antibacterial polylactic acid material. The method comprises the steps of 1, dispersing antibacterial compound into lactic acid, preparing solution with a concentration of 0.1-2g/L, conducting ultrasonic agitation (500-800W ultrasonic power at a rate of agitation of 500-800rpm) for 60-90min to obtain antibacterial lactic acid solution; 2, placing the antibacterial lactic solution into a vacuum oven at a temperature of 50-80 DEG C to vacuum dry for 24-36h until no redundant water is in the mixed liquor; obtaining the antibacterial polylactic acid material through direct condensing method. According to the antibacterial compound method, grapheme quantum dots after laser irradiation are adopted as the carrier of silver, then covered with silicon dioxide lamella for surface treatment, and finally adhered on porous grapheme, which can better load and fix silver nano particles, prevent the silver nano particles from agglomeration and remarkably improve the stability of the silver nano particles and enable longer antibacterial activity of the silver nano particles; application of the antibacterial compound on polylactic acid fiber film enables lasting and effective antibacterial activity and properties of high stability, broad-spectrum antibacterial and biodegradation.

The invention discloses an antibacterial deodorizing ceramic tile and a preparation method thereof. The preparation method comprises the following steps: step A, preparing a ground coat: evenly mixing a frit, a functional agent, a lithium chinastone, zirconium silicate, kaolin and quartz according to mass percent, ball-milling through a wet method, and screening to obtain the pulpous ground coat; step B, preparing a surface glaze: evenly mixing a frit, a deodorant, the kaolin, aluminum oxide, zinc oxide and zirconium silicate, ball-milling through a wet method, and screening to obtain the pulpous surface glaze; step C, sequentially applying the ground coat and the surface glaze prepared in the step A and the step B on a tile clay, and firing to obtain the ceramic tile. Compared with an existing ceramic pile, the ceramic pile prepared through the preparation method is scientific in material collocation, reasonable in preparation and stable in performances; with reasonably allocated photochromic compound, deodorant and antibacterial powder, the ceramic tile has excellent antibacterial performance, air purification performance and photochromic performance, so that the application scope of the ceramic tile is further expanded.

The invention discloses a preparation method of an antibacterial composite fiber membrane. The preparation method comprises the following steps: (1) preparing an antibacterial spinning solution, namely, weighing a proper amount of polyethylene glycol 400 and putting the polyethylene glycol 400 into a conical flask with a plug; raising the temperature to 50 DEG C and adding dichloromethane, wherein the volume ratio of the dichloromethane to the polyethylene glycol is 7 to 2; adding PLLA (Poly L Lactic Acid) with the molecular weight of 100000 and stirring by a magnetic force for 2 h at a room temperature; stirring at the speed of 100 rpm-300 rpm and dropwise adding an antibacterial compound dispersion solution with the concentration of 0.01mol/l-0.1mol/l; further stirring for 30 min-40 min to prepare the antibacterial spinning solution; and (2) carrying out electrostatic spinning to prepare the antibacterial composite fiber membrane. A specially prepared antibacterial compound is applied to a polylactic acid fiber membrane, so that the fiber membrane has lasting and effective antibacterial activity, good air permeability, high stability, broad-spectrum antibacterial property and biodegradable property.

The invention discloses an antibacterial and anti-static ceramic tile and a preparing method thereof. The preparing method includes the following steps of A, ground coat preparing, wherein ground coat is prepared from, by mass, 30%-35% of frits, 2%-8% of a functional agent, 20%-28% of lithium China stone, 5%-10% of silicic acid zirconium, 20%-25% of kaolin and 10%-12% of quartz, the materials are mixed to be even, subjected to wet ball grinding and screened, and the pasty ground coat is obtained; B, overglaze preparing, wherein overglaze is prepared from, by mass, 70%-80% of frits, 1%-5% of conductive powder, 10%-20% of kaolin, 5%-8% of aluminum oxide, 1%-2% of zinc oxide and 1%-5% of zirconium silicate, the mixture is mixed to be even, subjected to wet ball grinding and screened, and the pasty overglaze is obtained; C, the ground coat prepared in the step A and the overglaze prepared in the step B are sequentially glazed to a ceramic tile blank soil, and the ceramic tile is obtained in a sintered mode. Compared with an existing ceramic tile, the ceramic tile prepared with the method is scientific in mixing, reasonable in preparing and stable in performance; the conductive powder, a deodorant and antibacterial powder are reasonably matched, the ceramic tile has the excellent antibacterial, anti-static and air purifying properties accordingly, and the application range of the ceramic tile is further broadened.

The invention discloses a preparation method of an anticorrosive coating. The preparation method comprises the following steps: (1) preparing a resin solution; (2) conducting ultrasonic stirring on 1/2 of the resin solution, dropwise adding an antibacterial composite aqueous solution and continuing ultrasonic stirring; (3) conducting ultrasonic stirring on the other 1/2 of the resin solution, adding diatomite/inorganic oxide, and continuing ultrasonic stirring; (4) adding amino resin, a pigment, a defoaming agent, polyhydroxy acid sodium salt, dibutyl phthalate, a leveling agent and mosquito-repellent particles into a grinder for grinding; (5) mixing the materials prepared in the steps (2, 3 and 4), stirring, adding bentonite, stirring, grinding, filtering, and packaging in a sealed manner. Due to reasonable matching of diatomite/inorganic oxide and an antibacterial composite material, and synergistic effect of the functional additives, the anticorrosive coating has excellent anti-microbial, deodorizing and anti-formaldehyde properties, and further has a mosquito-repellent effect, so as to meet the requirements of multifunctional light curing coating, and further broaden the application of the light curing coating.

The invention discloses an ecological ceramic tile and a preparation method thereof. The preparation method comprises the steps of: A, glaze slurry preparation; B, glaze slurry impregnation: impregnating cordierite honeycomb ceramic in the glaze slurry, conducting vacuum pumping, and carrying out pressurized circulation treatment at least 1 time, and then performing first firing at 500-600DEG C; C, glaze slurry spraying: spraying the glaze slurry on the fired honeycomb ceramic surface, and then conducting second firing at 700-800DEG C, thus obtaining the ecological ceramic tile. Compared with existing ceramic tiles, the ceramic tile provided by the invention has the advantages of scientific compounding, reasonable preparation, stable performance, and no lead, cadmium or other extremely toxic substances. Also through reasonable collocation of the photochromic compound, negative ion compound and antibacterial composite material, the ceramic tile has excellent antibacterial, air purification and photochromic characteristics, thus further broadening the application scope of ceramics.

The invention discloses an antimicrobial composite material and a preparation method thereof. The preparation method comprises the following steps: (1) preparing a graphene quantum dot suspension; (2) preparing zinc oxide-loaded graphene quantum dots; (3) preparing silver-loaded graphene quantum dots coated by SiO2; (4) preparing silver/titanium dioxide-loaded graphene quantum dots; (5) surface treatment; (6) preparing an antibacterial composite material. According to the method, firstly, the zinc oxide-loaded graphene quantum dots and the silver/titanium dioxide-loaded graphene quantum dots are prepared respectively and then the surface treatment is conducted. Finally, the above two types of graphene quantum dots are adhered onto the porous graphene. Therefore, silver and zinc oxide can be better loaded and fixed. The agglomeration of silver and zinc oxide is avoided, and the stability of silver and zinc oxide is improved remarkably. As a result, the antibacterial activity of silver nanoparticles and zinc oxide lasts for a longer period of time.

The invention discloses a low temperature antique glaze with cleaner air effect and preparing method thereof, the preparing method comprises the steps of: A, preparing low temperature frit; B, preparing glaze, mixing low temperature frit, colorant, potassium feldspar, quartz, calcite, talc, calcium phosphate, anion compounds and antibacterial composite to obtain the mixing powder, putting sodium tripolyphosphate and carboxymethyl cellulose into powder and mixing the powder evenly, fine grinding, and then adding water so as to obtain the glaze; C, applying the glaze evenly on the body, and then putting the body into the reducing atmosphere furnace, cooling the natural glaze to room temperature after heat preservation, and the low temperature antique glaze with cleaner air effect is obtained. Compared with the prior antique glaze, the antique glaze produced by the invention has the advantages of scientific ingredients,reasonable preparing method, pure color and stable performance; at the same time with a reasonable combination of negative ions and antibacterial composite materials, the synergistic action of the two making the antique glaze has characteristics of excellent anti-bacterial, anti-fouling and air purification, the scope of the application of the antique glaze is further broaden.

The invention discloses a preparation method of PET/PTT alloy capable of purifying air. A used antibacterial compound uses graphene quantum dots obtained after laser irradiation as carriers of antibacterial agents, surface treatment is carried out, and attachment to porous graphene is finally carried out, so that silver nanoparticles and other antimicrobial agents can better loaded and fixed, agglomeration thereof is prevented, the stability of the antimicrobial agents is significantly improved, and thus the PET/PTT alloy has more long-lasting antibacterial activity; meanwhile, diatomaceous earth can adsorb harmful gases in air, especially formaldehyde, so that the PET/PTT alloy also has an air purifying effect besides an antibacterial effect. Through reasonable collocation of a diatomite/antimicrobial composite material and diatomite/porous carbon and under a synergistic action of functional additives, the alloy has excellent antibacterial and formaldehyde-resistant characteristics, multifunctional needs are met, and thus the application of the PET/PTT alloy capable of purifying air is further widened.

The invention discloses an anti-radiation ceramic tile and a preparing method thereof. The preparing method includes the following steps of A preparing ground glaze, wherein by mass, 30-35% of frit, 5-10% of functional agent, 20-28% of lithium chinastone, 5-10% of zirconium silicate, 20-25% of kaolin and 10-12% of quartz are mixed uniformly, wet ball grinding is carried out on the mixture, and the slurry ground glaze is obtained after screening; B preparing overglaze, wherein by mass, 70-80% of frit, 3-8% of nanometer bamboo charcoal, 10-20% of kaoline, 5-8% of aluminum oxide, 1-2% of zinc oxide and 1-5% of zirconium silicate are mixed uniformly, wet ball grinding is carried out on the mixture, and the slurry overglaze is obtained after screening; C applying the ground glaze prepared in the step A and the overglaze prepared in the step B on a tile blank, and firing the tile blank to obtain the tile. Compared with the existing ceramic tile, the manufactured ceramic tile is scientific in matching, reasonable in preparation and stable in performance; the ceramic tile has excellent antibacterial, anti-static and anti-radiation performance by reasonably matching conducting powder, nanometer bamboo charcoal and antibacterial powder, and the application range of the ceramic tile is further broadened.

The invention discloses a porous graphene silver-loaded antibacterial composite material and a preparation method thereof. The preparation method comprises the following steps: (1) preparing graphene quantum dot suspension liquid; (2) preparing silver-loaded graphene quantum dots; (3) preparing SiO2 coated silver-loaded graphene quantum dots; (4) carrying out surface treatment on the SiO2 coated silver-loaded graphene quantum dots; and (5) preparing the antibacterial composite material. The method disclosed by the invention takes laser irradiated graphene quantum dots as carriers of silver, and the silver is coated with silicon dioxide thin layers; finally, the silver is attached to porous graphene, so that silver nanoparticles can be loaded and fixed very well and are prevented from being agglomerated; the stability of the silver nanoparticles is remarkably improved so that the silver nanoparticles have relatively long-acting antibacterial activity; and meanwhile, the safety is improved, the utilization cost is reduced and the porous graphene silver-loaded antibacterial composite material has a wide application prospect in industrial application.

The invention discloses a photochromic ceramic tile and a preparation method thereof. The preparation method comprises the steps of: A, preparation of ground glaze: by mass percentage, mixing 30-35% of frit, 3-7% of a functional agent, 20-28% of lithium porcelain stone, 5-10% of zirconium silicate, 20-25% of kaolin and 10-12% of quartz evenly, conducting wet ball-milling, and performing sieving to obtain slurry ground glaze; B, preparation of surface glaze: by mass percentage, mixing 70-80% of frit, 1-4% of conductive powder, 10-20% of kaolin, 5-8% of alumina, 1-2% of zinc oxide and 1-5% of zirconium silicate evenly, performing wet ball-milling, and conducting sieving so as to obtain slurry surface glaze; and C, applying the ground glaze and surface glaze prepared by step A and step B respectively to a tile blank in order, and performing firing so as to obtain the ceramic tile. Compared with the existing ceramic tiles, the ceramic tile prepared by the method provided by the invention has the characteristics of scientific compounding, reasonable preparation and stable performance. Also through reasonable collocation with conductive powder, photochromic compounds and antibacterial powder, the ceramic tile has excellent antibacterial, antistatic and photochromic properties, thus further broadening the application scope of ceramic tiles.

The invention discloses a preparation method of a polylactic acid material. The preparation method comprises the following steps: (1) dispersing an antimicrobial compound in lactic acid to prepare a solution with the concentration of 0.1-2g/L, and performing ultrasonic stirring for 60-90min to obtain an antibacterial lactic acid solution; (2) dispersing a conductive filler in lactic acid to prepare a solution with the concentration of 1-2g/L, and performing ultrasonic stirring for 60-90min to obtain a conductive lactic acid solution; (3) mixing the antibacterial lactic acid solution and the conductive lactic acid solution according to a volume ratio of 2: 1, putting the mixed solution into a vacuum drying oven with the temperature of 50-80 DEG C, and performing vacuum drying for 24-36h till the mixed solution has no residual water to obtain the polylactic acid material through direct condensation. Through scientific compatibility of the antimicrobial compound and the conductive filler and under a synergistic action of raw materials, the polylactic acid material not only has an antibacterial property, but also has an antistatic function, so that the application range of the polylactic acid material is further widened.

The invention discloses antistatic bionic quartzite and a preparation method thereof. The preparation method includes the following steps that firstly, modified resin is prepared; secondly, by weight, 80-90% of quartz, 8-12% of modified resin, 0.01-1% of a curing agent, 0.01-1% of a coupling agent, 3-5% of conductive powder, 1-3% of aluminum hydroxide powder and 0.1-2% of pigment are stirred to be uniform, and a mixture is obtained; thirdly, the mixture is distributed on a mould plate for the first time, vibratory compacting forming, demoulding and cutting are carried out, arrangement is carried out according to a preset pattern to obtain a semi-finished product, material distribution is carried out for the second time, vibratory compacting forming and drying forming are carried out, and then aftertreatment is carried out to obtain a finished product. Compared with existing bionic quartzite, the prepared bionic quartzite is scientific in blending, reasonable in preparation, stable in performance, high in mechanical strength and not prone to deformation or ageing; besides, by reasonably matching conductive powder, a luminous composite and antibacterial powder, the bionic quartzite has excellent antibacterial, luminous and antistatic properties, and the application range of the bionic quartzite is further widened.

The invention discloses waterborne photochromic UV photocuring ceramic ink-jet ink and a preparation method thereof. The preparation method comprises steps as follows: step A, 20%-30% of waterborne acrylate, 1%-20% of a solvent and 0.5%-3% of an ink aid are sufficiently mixed, 20%-38% of ceramic pigment is added during stirring and dispersed, and 10%-20% of waterborne epoxy acrylate and 3%-8% of a photochromic compound are added and mixed uniformly; 0-5% of an antibacterial compound is added and mixed uniformly, and a mixed material is obtained; step B, the mixed material is ground and dispersed until the fineness is lower than 1 mu m; step C, 0.5%-4% of a waterborne photoinitiator is added and dispersed uniformly, and a finished product is obtained. Compared with existing photocuring ceramic ink-jet ink, the prepared ink adopts scientific ingredients, is reasonable to prepare, stable in performance, non-toxic and non-irritant and has a lasting antibacterial characteristic, pollution-preventing and self-cleaning functions and a photochromic characteristic through the synergistic effect of the photochromic compound and the antibacterial compound, and the application range of the photocuring ceramic ink-jet ink is further widened.

The invention discloses an antibacterial negative ion health care ceramic and a preparation method thereof. The preparation method comprises the steps of: A, preparation of glaze slurry: by mass percentage: mixing 10-15% of zinc oxide, 0.4-0.5% of barium carbonate, 0.3-0.4% of talc powder, 58-65% of borax, 10-12% of silicon oxide, 12-20% of boron oxide and 3-8% of a functional agent to obtain mixed powder, adding alumina ball-milling balls and distilled water, and performing ball milling; then adding tourmaline and cordierite, further conducting ball milling, and controlling the slurry at 300-350mesh to obtain the glaze slurry, wherein, the tourmaline and cordierite respectively account for 3-8% and 1-5% of the mass of the mixed powder; B, glaze slurry impregnation and first firing; and C, glaze slurry spraying and second firing, thus obtaining health care ceramic. Compared with the existing ceramics, the ceramic prepared by the method provided by the invention has the advantages of scientific compounding, reasonable preparation, stable performance, and no lead, cadmium or other extremely toxic substances, and also has uniform and lasting spectral antibacterial properties and air purification function, thus further broadening the application scope of the ceramic.

The invention discloses an antibacterial radiation-proof ceramic tile and a preparation method thereof. The preparation method comprises the steps of: A, preparing ground glaze: by mass percentage: mixing 30-35% of frit, 1-6% of antibacterial powder, 20-28% of lithium chinastone, 5-10% of zirconium silicate, 20-25% of kaolin and 10-12% of quartz evenly, conducting wet ball milling, and performing sieving to obtain pulp ground glaze; B, preparing surface glaze: by mass percentage, mixing 70-80% of frit, 1-5% of nano bamboo charcoal, 10-20% of kaolin, 5-8% of alumina, 1-2% of zinc oxide and 1-5% of zirconium silicate evenly, conducting wet ball milling, and then performing sieving to obtain pulp surface glaze; and C, applying the ground glaze and the surface glaze obtained in step A and step B to a tile blank in order, and performing firing to obtain the ceramic tile. Compared with the existing ceramic tiles, the ceramic tile prepared by the method provided by the invention has the advantages of scientific compounding, reasonable preparation, and stable performance. Also through reasonable collocation of nano bamboo charcoal and the antibacterial powder, the two play a synergistic role and endow the ceramic tile with excellent antibacterial, radiation-proof and air purification performance, thus further broadening the application scope of the ceramic tile.

The invention discloses a formaldehyde-removing gravure water-based ink and a preparation method thereof. The formaldehyde-removing gravure water-based ink is prepared from the following components in percentage by weight: 70-75% of water-soluble resin, 10-15% of deionized water, 5-10% of water-based organic pigment, 3-6% of ethanol, 0.5-1% of diatomite/antimicrobial composite, 1-2% of dispersing agent, 0-1% of retarder, 0.5-1% of water-based leveling agent, 0.5-1% of water-based wax emulsion, 0.5-1% of diatomite/inorganic oxide, 0.5-1% of organic amine and 0.5-1% of defoaming agent. By reasonably matching the diatomite/antimicrobial composite material and diatomite/inorganic oxide under the synergistic actions among the functional additives, the ink has the excellent antimicrobial, anti-formaldehyde and deodorizing characteristics, and satisfies the demands for multiple functions, thereby further widening the applicability of the ink.

The invention discloses a preparation method for silver-containing titanium dioxide antibacterial agent. The preparation method comprises the following steps: (1) adding butyl titanate into absolute ethyl alcohol, continuously stirring until the absolute ethyl alcohol finishes being dripped, dripping dilute nitric acid, stirring by magnetic force for 20-30min under a water bath condition of 30-60DEG C to obtain titanium dioxide sol, wherein the volume ratio of butyl titanate, absolute ethyl alcohol to dilute nitric acid is 5:(10-20):(0.5-1.5); (2) adding silver nitrate solution into the titanium dioxide sol, stirring for 10-20min, dripping 3% ammonium hydroxide until sediments just disappear, then, adding formaldehyde solution, carrying out magnetic stirring for 2-3h under a water bath condition of 50-60DEG C to obtain silver-titanium dioxide sol mixture; (3) carrying out centrifugation on the above silver-titanium dioxide sol mixture, cleaning the sediments with ethanol aqueous solution for 3-5 times, and drying in a drying oven at the temperature of 50-60DEG C for 10-20h to obtain the silver-containing titanium dioxide antibacterial agent. In the silver-containing titanium dioxide antibacterial agent, titanium dioxide can favorably load and fix silver nanoparticles, and the silver nanoparticle has long-acting antibacterial activity.

The invention discloses a photochromic low temperature antique glaze and a preparing method thereof. The preparing method comprises the steps of: A, preparing low temperature frit; B, preparing glaze, mixing low temperature frit, colorant, potassium feldspar, quartz, calcite, talc, calcium phosphate, photochromic compounds and antibacterial composite to obtain the mixing powder, putting sodium tripolyphosphate and carboxymethyl cellulose into powder and mixing the powder evenly, fine grinding, and then adding water so as to obtain the glaze; C, applying the glaze evenly on the body, and then putting the body into the reducing atmosphere furnace, cooling the natural glaze to room temperature after heat preservation, and the photochromic low temperature antique glaze is obtained. Compared with the prior antique glaze, the method has the advantages that the ingredients are scientific, the preparing method is reasonable.

The invention discloses an noctilucent antibacterial lead and cadmium-free low-temperature frit and a preparing method thereof. The method comprises the steps of: A mixing: mixing and grinding evenly 10-18% of quartz, 5-12% of feldspar, 15-25% of borax, 3 -12% of carbonate, 20 - 35% of boric acid, 3- 8% of spodumene, 1 - 4% of fluorinated salt and 0 - 5% of kaolin, adding 0.1-5% of antibacterial composite and 1 to 5% of noctilucent powder composite, grinding evenly to prepare a mixture; b melting, and c cooling for molding. Compared with the conventional low-temperature frit, the low-temperature frit prepared by the method has the advantages of scientific ingredients, reasonable preparation, stable performance and no toxic substances, such as lead and cadmium, meanwhile, the frit has the persistent antibaterical property of spectra, the antifouling self-cleaning function and the noctilucent function, does not have agglomeration and is high in uniformity and stability of luminance and antibacterial stability, which further broads the application range of the low-temperature frit. The frit can be used as raw materials to manufacture rich building materials,such as noctilucent antibacterial mosaic, noctilucent antibacterial microcrystalline ceramic composite panels and noctilucent antibacterial low-temperature ceramic ink.

The invention discloses a preparation method of a waterborne antibacterial inorganic coating. The preparation method includes following steps: (1), dispersing diatomite in a water solution, ultrasonically stirring while dropwise adding an antibacterial compound water dispersion solution, standing, performing suction filtration cleaning for several times, and drying to obtain a diatomite/antibacterial compound; (2), at room temperature, mixing and stirring water and a defoamer, adding pigment and a filler, and fully stirring to obtain a solution A; (3), mixing silica sol with a polymer solution, fully stirring, adding the diatomite/antibacterial compound, and stirring to obtain a solution B; (4), adding a film forming auxiliary and a thickener into the solution B obtained in the step (3), and fully stirring to obtain a solution C; (5), dropwise adding the solution C into the solution A, fully stirring, and filtering. By reasonably matching a diatomite/antibacterial composite material and diatomite/inorganic oxide and through synergism among functional additives, the inorganic coating has excellent antibacterial, anti-formaldehyde and deodorizing characteristics and meets multifunctional needs, and application range of the inorganic coating is further expanded.

Antibacterial and anti-static water- borne UV light curing ceramic ink jet ink. The invention discloses an antibacterial and antistatic water- borne UV light curing ceramic ink jet ink and preparing methods thereof, the method comprises the steps of A, first fully mixing 20 -30% water-borne acrylate, 1-20% solvent and 0.5-3% ink additives, then adding 20 - 38% ceramic pigment while stirring, dispersing the ceramic pigment, then adding 10-20% water-borne epoxy acrylate and 1-8% conductive filler, mixing evenly; then adding 0.1-5% antibacterial composite, mixing evenly, the mixed material is obtained; B, Grinding and dispersing the mixed material until the fineness reaches less than 1 Mum; C, adding 0.5-4% water-borne photoinitiator, evenly dispersed, the finished product is obtained. Compared with the existing light curing ceramic ink jet ink, the ink prepared by this method has scientific preparation, reasonable preparation, stable performance, non-toxic and non-irritating and better control of ink viscosity and fluidity, so that the ink shows good performance when printing; the ink also has a lasting antibacterial properties , anti-fouling self-cleaning function and antistatic characteristics, and further broaden the scope of application of light curing ceramic ink jet ink.