31results about How to "Increase silver loading" patented technology

The invention discloses a silver-loaded modified montmorillonite antibacterial agent, a preparation method and an application thereof. The antibacterial agent uses sulfur-containing amino acid-modified montmorillonite as the carrier for loading silver ions. Firstly, the sulfur-containing amino acid is used to modify the montmorillonite, and then the silver ions are loaded between the modified montmorillonite layers through ion exchange. Silver ions are transformed into nano-silver by means of ultraviolet radiation, and a silver-loaded modified montmorillonite antibacterial agent is obtained. The silver-loaded modified montmorillonite antibacterial agent of the present invention has good antibacterial performance, and can be mixed into plastics, coatings, adhesives, ceramic materials and products thereof, so that it has excellent antibacterial function.

The invention belongs to the chemical technical field and relates to a high silver supported zeolite molecular sieve acetate deiodinase adsorber and a preparation method thereof. In the adsorber, the sizes of zeolite cavity openings are respectively 0.66*0.71 nanometers and 0.56*0.56 nanometers, and the adsorber is provided with characteristic X-ray diffraction lines in a BEA (Background Equivalent Activity) type zeolite structure. The deiodinase adsorber is prepared by the steps that saled sodium type zeolite molecular sieve powder with two-dimensional twelve oygen membered ring cavity openings is formed through binder, is in in-situ hydrothermal strengthening treatment to generate chemical bonds and then is treated by ion exchange sodium removal and silver carrying. The adsorber has theadvantages of high crystallization degree, strong particle strength, high silver supported and strong adsorption capacity to organic iodide, inorganic iodide and molecular iodide with different sizescontained in strong acidic medium, can enable the total iodide content in product acetic acid after deiodination treatment by the adsorber to be lower than 5ppb and is suitable for being used as raw materials for synthetizing vinyl acetate.

The invention relates to a regeneration and activation technique of solid adsorbent polluted by iodine, which comprises the following steps in sequence: the solid adsorbent polluted by iodine is placed in 0.01 to 1 percent of acetic acid for cleaning; (2) the cleaned adsorbent is soaked in sodium thiosulfate solution with the concentration of 0.01 to 2 percent in static state or placed in a column and the sodium thiosulfate solution with the concentration of 0.01 to 2 percent is injected for regeneration so as to lead the pollutants in effective pore channels of the adsorbent polluted by iodine to be precipitated completely; (3) then the obtained adsorbent is placed in the column and ion exchange is carried out by injecting active metal Ag+ solution till the concentration of the active metal Ag+ on the solid adsorbent reaches the concentration before the solid adsorbent is polluted. The invention has low energy consumption and convenient operation, in particular to the regenerative technique condition that any heating facility is not used, the concentration of the used regenerative liquid is low and can effectively desorb iodine pollutants; the appearance of the activated adsorbent is same as new carriers, is off white, is characterized by high silver-loaded quantity and high adsorption and effectively prolongs the service life of the adsorbent, thus reducing the cost of iodine desorption.

The invention discloses a preparation method of silver-loaded activated carbon antibacterial fiber membrane, which comprises the following steps: Step 1) Preparation of antibacterial silver-loaded activated carbon: soak activated carbon in AgNO 3 In the solution, choose a deflocculant, dissolve in AgNO 3 solution, and then the glucose solution was slowly added dropwise to the AgNO 3 In the solution, heat it in a water bath and stir it magnetically, then filter the product, wash it with water, and remove glucose until the Ag+ is completely removed, then dry it in vacuum, and finally dry the product in a blast oven, then place it in a tube furnace at a high temperature of 500° in a nitrogen atmosphere Burn to obtain silver-loaded activated carbon; Step 2) Spinning solution preparation: dissolve polyacrylonitrile in a certain volume of N,N-dimethylformamide solution, heat, and magnetically stir to obtain spinning solution, and then Silver activated carbon is added to the spinning liquid, and after sealing, it is magnetically stirred for 8 hours to obtain an antibacterial spinning liquid; Step 3) Spinning: use an electrostatic spinning device for spinning, and the present invention makes the fiber membrane have better antibacterial properties.

The invention discloses an antibacterial and pollution-resistant PVDF ultrafiltration membrane for water filtration, which mainly includes the following components according to parts by mass: polyvinylidene fluoride: 100 parts; polyethylene glycol: 15-35 parts; silver-loaded chitosan : 3‑15 servings. The present invention mixes polyvinylidene fluoride and polyethylene glycol after dissolving in N-methylpyrrolidone solvent through a solution blending method; prepares silver-loaded chitosan solution with chitosan, and dips polyvinylidene fluoride film in The polyvinylidene fluoride microporous membrane with hydrophilic antibacterial and pollution resistance can be prepared after drying in the silver-loaded chitosan solution. The polyvinylidene fluoride microporous membrane prepared by the invention not only has good hydrophilicity, but also can kill microorganisms on the surface, can reduce the amount of protein adhesion in sewage, and can inactivate proteins at the same time, effectively prolonging the life of polyvinylidene fluoride. membrane life.

The invention discloses an antibacterial complete denture and a manufacturing method thereof. An antibacterial complete denture includes artificial teeth and a base, and the base includes the following components in parts by weight: 70-80 parts of tooth base powder, 70-80 parts of tooth base powder, 30-40 parts of supporting water, 2-3 parts of silicon-based toughening agent, 4-8 parts of silver-loaded silica, 2-4 parts of natural antibacterial agent and 1-2 parts of nano-titanium dioxide. The present invention makes the base have excellent antibacterial properties through the compounding of silver-loaded silica, nano-titanium dioxide and natural antibacterial agents, and its compounding with silicon-based toughening agents can further improve the toughness of the base, thereby prolonging its service life .

The invention discloses a high-efficiency antibacterial fiber and a manufacturing method thereof, which mainly includes three steps of preparing antibacterial masterbatch, antibacterial fiber and antibacterial FDY silk. The present invention utilizes nanoscale silver-loaded molecular sieves with small crystal size, large specific surface area, and high silver loading to prepare high-efficiency antibacterial fibers. The content of antibacterial agents (nanoscale silver-loaded molecular sieves) in the fibers is ≤1‰, and the antibacterial rate is over 99%. After repeated washing, the antibacterial effect did not decrease significantly, and the preparation process of the antibacterial fiber does not require the use of organic solvents. The nano-scale silver-loaded molecular sieves used are prepared by a one-pot method without adding any organic templates. The process is simple, low-cost, and green. ,Environmental friendly.

The present invention relates to sea water desalting agent based on silver-carrying acid zeolite and its preparation process, and belongs to the field of sea water desalting technology. The sea water desalting agent based on silver-carrying acid zeolite consists of silver-carrying acid zeolite, silver oxide and barium hydroxide. Its preparation process includes the following steps: preparing acidzeolite through soaking zeolite in acid solution or ammonium salt solution for ion exchange at 25-80 deg.c, washing, filtering and stoving; preparing silver-carrying acid zeolite through soaking the acid zeolite in silver ion solution for ion exchange at 60-120 deg.c in heliophobic condition, washing, filtering and stoving; and mixing the silver-carrying acid zeolite, silver oxide and barium hydroxide in heliophobic condition to obtain the sea water desalting agent. The sea water desalting agent has high desalting efficiency, high effluent quality, simple preparation process and other advantages.