86results about How to "Photocatalytic" patented technology

The photocatalyst beautifying and whitening toothpaste includes photocatalyst titania solution 18.0-30.0 weight portions, glycerin 10.0-20.0 weight portions, calcium peroxide powder 1.0-8.0 weight portions, calcium carbonate 15.0-30.0 weight portions, sodium lauryl sulfate 4.0-10.0 weight portions, silica 25.0-35.0 weight portions, flavoring matter 0.5-1.5 weight portions and hydrogen peroxide 1.0-8.0 weight portions. The preparation process includes mixing all the components inside one dry container. The photocatalyst beautifying and whitening toothpaste has photocatalytic effect, contains whitening factor, has beneficial negative ion effect, powerful friction and adsorption effect, excellent bacteriostasis and foaming property and obvious functions of cleaning teeth, whitening and preventing halitosis, dental diseases and eliminating tartar.

The invention relates to the technical field of water pollution control, in particular to industrial heavy metal wastewater treatment method based on flocculation, flotation and sedimentation. The method includes an aeration treatment step, a PH value adjustment step, a flocculation step, an air flotation step and a sedimentation and filtration step. A flocculant is prepared in the steps that healthy water hyacinth plants as raw materials are modified by modification shell powder and chitosan, bonded with polyaluminum ferric chloride and finally mixed with nano-zinc oxide / carbon quantum dot complexing agents. According to the method, the water hyacinth plants serve as the raw materials, the cost is very low, heavy metal ions in wastewater can be effectively treated, no secondary pollutionis caused, and the processing effect is very stable.

The invention relates to a method for preparing a CNT / Fe3O4@ZnO one-dimensional nanocomposite by a polyol one-pot method. The method comprises the following steps: 1, weighing and then mixing a multiwall nanotube, ferric acetylacetonate and triethylene glycol, then carrying out ultrasonic dispersion on the mixture until the mixture is uniform, then introducing argon, then heating the mixture to the boiling point of triethylene glycol and then carrying out reflux; and 2, then cooling the product to the room temperature, then throwing zinc acetate, then slowing heating the mixture to the boiling point of triethylene glycol, then carrying out reflux, carrying out magnetic separation after cooling, washing the product with ethanol and drying the product to obtain the CNT / Fe3O4@ZnO composite. The composite is applied in the fields of photoelectric device assembly and photocatalysis.

The invention relates to modified tussah silk fabric with functionalized nanometer chitosan and nanometer titanium dioxide. The modified tussah silk fabric is prepared by the steps in sequence: weaving the tussah silk fabric by utilizing tussah filament, preparing finishing liquor and finishing tussah silk fabric; and the technical problems that the existing textile materials in the modification technology can not effectively improve the properties that the tussah silk fabric has damage to the environment, is easy to wrinkle, not anti-bacterial and easy to shrink, has poor dyeing property, poor comfortableness and function, and the like can be solved, the comprehensive properties that the tussah silk fabric is anti-wrinkle, soft, anti-bacterial, shrink-proof, self-cleaning and ultraviolet ray-resistant, as well as the adsorption efficiency of dye, and the like can be improved and enhanced, and the tussah silk fabric has the technical benefits of being lower in preparation cost, simple in process, environment-friendly and easy to realize, etc.

The invention relates to photocatalyst whitening toothpaste and a preparing method thereof and belongs to the technical field of photocatalysts. The photocatalyst whitening toothpaste comprises following components: 18.0-30.0 parts of a nanometer titanium dioxide photocatalyst solution, 10.0-20.0 parts of sorbitol having a weight concentration of 90%, 9% of glycerin, 1.0-8.0 parts of calcium peroxide powder having a purity of 80%, 15.0-30.0 parts of calcium carbonate, 4.0-10.0 parts of sodium laurylsulfate 25.0-35.0 parts of silicon oxide, 0.5-1.5 parts of a flavouring agent, 1.0-8.0 parts of hydrogen peroxide, fluoride and sodium benzoate.

The invention relates to the field of agriculture and discloses an agricultural black polyethylene mulching film and a preparation method thereof. The agricultural black polyethylene mulching film comprises the following components: 75-85wt% of polyethylene, 4-6wt% of black master batch, 4-8wt% of polyvinyl alcohol, 4-8wt% of multifunctional master batch, 0.5-2.5wt% of a lubricant, 0.5-1.5wt% of doped nano titanium dioxide and 0.25-0.75% of a silane coupling agent. The agricultural black polyethylene mulching film is black and capable of shielding light, so that weeds cannot survive as photosynthesis is inhibited. The multifunctional master batch has functions of water retention, oxygen production and insect killing. In addition, a slow-release effect can be achieved for chemical oxygen producers and insect killing components, and active components can be continuously and stably released. The doped nano titanium dioxide has a photocatalysis property, and thus the mulching film can be slowly degraded. The preparation method disclosed by the invention is simple, reasonable, and applicable to large-scale production.

The invention provides a self-cleaning composite material and a preparation method thereof, and relates to the technical field of materials. The composite material is prepared from the following components in parts by mass: 25-40 parts of polyurethane resin, 10-15 parts of nano-titanium oxide, 5-10 parts of yttrium oxide, 4-8 parts of alkali metal sulfonate, 6-12 parts of poly(meta-ethylene acid ester), 6-15 parts of nano-tungsten oxide, 4-10 parts of white carbon black, 3-8 parts of polyoxyethylene ether, 6-12 parts of magnesium oxide ceramic micro-powder, 6-15 parts of glass fiber, 5-10 parts of a curing agent and 12-22 parts of acetone. The self-cleaning composite material provided by the invention has the advantages of excellent photocatalysis performance, excellent self-cleaning performance, stable property, good weather tolerance and durability and excellent mechanical performance, and can be used as a surface coating material of metal or alloy materials.

The invention discloses an efficient composite inorganic antibacterial agent and a preparation method thereof, belonging to the technical field of nanomaterial preparation. The efficient composite inorganic antibacterial agent comprises the following components in parts by weight: 100 parts of palygorskite, 30-50 parts of a photocatalytic material, 3-5 parts of graphene, 2-8 parts of metal oxide and / or metal salt and 0.5-2 parts of polyquaternium. Palygorskite with a multi-channel structure is used as a carrier and undergoes microcosmic nanometer compounding with the graphene, so a palygorskite carrier and graphene can be kept in a highly dispersed state in the processing and using processes; meanwhile, the photocatalytic material with an antibacterial effect, the metal oxide and the metalsalt are added so as to prepare the novel composite inorganic antibacterial material with multiple synergistic functions including photocatalysis, electron migration wall breaking and metal ion antibiosis; and the contact area of antibacterial active components and bacteria can be increased through good dispersity of the agent, the antibacterial effect is achieved through synergism of the antibacterial components, and therefore, the effects of killing bacteria and efficiently inhibiting bacterial reproduction are achieved.

The invention discloses a composite nanometer magnetic photocatalyst and a preparation method. According to the magnetic photocatalyst, nickel zinc ferrite is prepared by a coprecipitation method to be taken as a magnetic nucleus, and a magnetic nanometer photocatalyst with ZnO being the outer cladding layer is prepared by a homogeneous precipitation method. The photocatalyst has ferromagnetism and part superparamagetism, can be distributed uniformly under the magnetic field, is unlikely to focus magnetism, has high photocatalytic activity and can be recycled through magnetic separation. The preparation method has the advantages of simple preparation process, low cost and the like. The prepared composite nanometer magnetic photocatalyst is suitable for treating metal-containing particles, oil-containing wastewater, printing wastewater and living wastewater.

The invention belongs to the field of special coating, and discloses antibacterial nanometer polyurethane emulsion with an air purification function. The antibacterial nanometer polyurethane emulsionis prepared from components including, by weight, isophorone diisocyanate (IPDI), polyether N-210, 2,2-dimethylolpropionic acid (DMPA), diethylene glycol (DEG), 3,5-tri-ethoxy s-triazine (TNO), acetone, dibutyltin dilaurate T-12, triethylamine, deionized water, wetting agents, nanometer silicon dioxide, nanometer titanium dioxide and nanometer zinc oxide. The invention further discloses a method for preparing the antibacterial nanometer polyurethane emulsion and carpentry paint with the antibacterial nanometer polyurethane emulsion. The antibacterial nanometer polyurethane emulsion, the methodand the carpentry paint have the advantages that the formaldehyde conversion of the antibacterial nanometer polyurethane emulsion and the carpentry paint with the antibacterial nanometer polyurethaneemulsion can reach 90% at least, and the hardness of paint films can reach 2.5 H.

The invention discloses a wooden product antibacterial finishing paint, relating to the technical field of coatings. The wooden product antibacterial finishing paint comprises the following components in parts by weight: 70-85 parts of water-soluble polyurethane emulsion, 8-12 parts of water-soluble amine resin, 0.05-0.1 part of nano silicon dioxide, 0.05-0.1 part of nano titanium dioxide, 0.1-1 part of a fluorocarbon modified acrylate leveling agent, 30-45 parts of hexamethylene diisocyanate, 5-8 parts of ethanol, 15-20 parts of a pigment, 2-5 parts of bentonite, 8-10 parts of silicon dioxide, 1-3 parts of silicone oil and 5-10 parts of water. Compared with an existing wood-ware finishing paint, the wooden product antibacterial finishing paint disclosed by the invention has a significant antibacterial effect, and the antibacterial rate can reach 100%.

The invention discloses a making method of a polyester-yarn plain-weave fabric. Polyester warp yarns undergo warping, sizing and denting and are interwoven with polyester weft yarns together according to 1 / 1 plain weave to produce the high-density plain-weave fabric. Sizing is performed by adopting titanium sol, the effect of making a fabric surface smooth can be played, and the defects of curve and tonal variation are not produced, so that the fabric has the soft and moist hand feeling of a wool fabric and a woven pile fabric. Dotted protrusions and recesses distributed between two warp-wise lines make the filament-yarn plain-weave wool-like fabric have the style of a jacquard fabric, and the quality of the fabric is improved.

The present invention relates to a method for preparing tempered anti-bacterial self-cleaning glass. Said method utilizes one-step heat treatment process to make the titanium dioxide base film coated or plated on the glass surface be sintered and converted into anatase crystal type to implement glass tempering so as to obtain the transparent tempered bacteria-killing self-cleaning glass product with good photocatalytic activity photosuperhydrophilicity and anti-bacterial function. Besides, said invention also provides its application range.