2538 results about "Nanocrystalline titanium dioxide" patented technology

The invention discloses nano titanium dioxide / acrylate composite emulsion and a preparation method thereof. The method comprises the following steps of: hydrolyzing butyl titanate to generate nano titanium dioxide sol in absolute ethanol by using hydrochloric acid as a catalyst, adding a vinyl-containing silane coupling agent for modifying the sol, performing centrifugal washing, drying and grinding on the obtained product to obtain nano titanium dioxide, and thus obtaining the nano titanium dioxide / acrylate composite emulsion by using acrylate monomers of methyl methacrylate, butyl acrylate and the like as reaction monomers and adopting a method combining in-situ emulsion polymerization and seed emulsion polymerization. The nano titanium dioxide / acrylate composite emulsion prepared by the method has good storage stability and is stable in a polymerization reaction process; and a film formed by the composite emulsion has good hardness, impact strength and heat resistance.

The invention discloses a multifunctional concrete structure endurance protective agent as well as the preparation and application method thereof. The protective agent provided by the invention contains the following ingredients of: an organic / inorganic composite fluorosilicone-acrylate copolymer, lithium silicate, sodium silicate, lithium molybdate, sodium tetraborate, sal glauberi, 1,2-aminoazophenylene, nanometer titanium dioxide, anhydrous ethanol and water. The protective agent can penetrate inside concrete, wherein a densification ingredient can minimize internal holes and cracks to raise the compactness of concrete, and a rust-resistant ingredient can penetrate into concrete and be adsorbed on the surface of steel bar so as to passivate and protect the steel bar; the low-surface energy silicon fluoride ingredient can be solidified to form a cured film on the surface of concrete so as to endow the protective agent with the hydrophobic performance; a nanometer ingredient can endow the cured film layer with properties of resisting ultraviolet and ageing and improving the organic polymer performance as well as the self-cleaning performance. In addition, hydroxy generated from the hydrolysis of siloxane group can perform a condensation reaction with hydroxy on the surface of concrete to produce chemical bond, so as to raise the anchoring strength between the film and concrete and improve the interface combination. The protective agent provided by the invention can be widely applied in various concrete structure engineering protections to raise the service life of concrete.

The invention relates to a nano titanium dioxide fluorine-carbon coating in the technical field of nono, and a preparation method thereof. The coating comprises the following compositions by weight percentage: 2 to 6 percent of nano titanium dioxide, 80 to 90 percent of fluorine-carbon base material, 5 to 10 percent of curing agent and 2 to 10 percent of coating thinner. The preparation method comprises the following steps: 1, according to weight percentage, 2 to 6 percent of nano titanium dioxide particle is weighed and added into the 2 to 10 percent of coating thinner so as to be evenly mixed through ultrasonic dispersion; and 2, the mixture is added with the 80 to 90 percent of fluorine-carbon base material and the 5 to 10 percent of curing agent orderly and is evenly stirred to be made into coating mother solution. In addition, the nano titanium dioxide is rutile-type nano titanium dioxide particle modified by silane coupling agent KH-570. The nano titanium dioxide fluorine-carbon coating can effectively improve the dispersing performance of nano particle in the coating and the UV aging resistance of the coating.

The invention relates to the field of functional fabrics, in particular to an antibacterial fabric, a preparation technology of the antibacterial fabric and textile of the antibacterial fabric. The antibacterial fabric comprises, by weight, 10-20 parts of short fiber silk, 20-25 parts of anion polypropylene staple fibers, 15-25 parts of nano bamboo carbon fiber, 2-5 parts of nano-titanium dioxide, 5-10 parts of nano-silver fiber, 2-4 parts of anti-mite finishing agent, 3-8 parts of sweat-absorbent quick-drying processing agent, 12-18 parts of binder, 2-4 parts of dispersing agent, 3-5 parts of fabric softener and 80-85 parts of polyester cotton fiber. Due to the fact that the anion polypropylene staple fibers are added, effects of nerve stability, sleep improvement, inflammation diminishing and pain relief are provided. Due to the fact that the anti-mite finishing agent is added, trouble caused by mites to a human body can be effectively prevented. Due to the fact that the sweat-absorbent quick-drying processing agent is added, sweat generated by the body can be rapidly absorbed, discomfort can be reduced, and breeding of germs under a humid environment can be prevented. The antibacterial fabric can be applied to clothing, home textiles, sports goods, medical care, bacteria resistance and insect prevention textiles.

An electronic device housing is provided. The electronic device housing includes a substrate, a metallic-appearing coating formed on the substrate, and a top coating formed on the metallic-appearing coating. The top coating contains nano-titanium dioxide powder and fluorocarbon resin. The electronic device housing has self-cleaning and anti-fingerprint properties.

The invention relates to a high strength anti-microbial packaging bag, which belongs to the field of packaging bag technology. According to the invention, the packaging bag is prepared by the following raw materials by weight with melt blending, extrusion and film blowing steps: 100 parts of polypropylene resin, 3-7 parts of polyvinyl alcohol, 1-3 parts of bamboo fiber, 20-40 parts of starch, 0.2-1.5 parts of nanometer titanium dioxide, 0.02-0.7 parts of anti-oxidant, 15-30 parts of calcium carbonate, 5-10 parts of paraffin, 0.1-1 parts of silane coupling agent and 2-5 parts of epoxy soybean oil. The intensity of the packaging bag is increased by adding bamboo fiber; and the added bamboo fiber and titanium dioxide have antibacterial property, and the packaging bag has excellent antibacterial property; degradable polyvinyl alcohol and starch are added for degrading products and eliminating environment pollution, thereby not only reducing packaging bag cost, but also minimizing environment pollution with environmental protection.