319 results about "Silver iodide" patented technology

The invention relates to a method for preparing a lobaplatin trihydrate by using oxalate, diaminomethyl cyclobutane oxalate, potassium chloroplatinite and potassium iodide are taken as raw materials, and the method comprises the following steps: firstly replacing the potassium chloroplatinite to potassium iodoplatinite, neutralizing the oxalic acid in diaminomethyl cyclobutane under alkaline condition, enabling the diaminomethyl cyclobutane to be freed, and then reacting the diaminomethyl cyclobutane with K2PtI4 (potassium iodoplatinate) for synthesizing a diiodide; enabling the diiodide to carry out replacement reaction with silver nitrate to generate silver iodide precipitate, enabling reactants after filtering out the precipitate to carry out ion exchange with anion exchange resin, then synthesizing a lobaplatin anhydride with lactic acid, re-crystallizing the anhydride in water/acetone mixed solution, and finally obtaining a lobaplatin trihydrate product. The raw materials used in the method have stable performances, the reaction is fuller and more complete, and the yield of the lobaplatin trihydrate is high.

The invention discloses a time detonating fuse of an antiaircraft gun hail-suppression precipitation increasing bomb. The time detonating fuse comprises a fuse body (1), a hood (2), a firing mechanism (3), a medicament tray time-delay mechanism (4), a ball rotor safe and arming mechanism (5) and a detonating primer (6), wherein the hood (2) covers the front end of the fuse body (1), the firing mechanism (3), the medicament tray time-delay mechanism (4), the ball rotor safe and arming mechanism (5) and the detonating primer (6) are arranged in the cavity of the fuse body (1), the firing mechanism (3) is located on the front part of the fuse body (1), the medicament tray time-delay mechanism (4) which has a time-delay function is located between the firing mechanism (3) and the ball rotor safe and arming mechanism (5), the front end of the detonating primer (6) is connected with the ball rotor safe and arming mechanism (5), and the back end of the detonating primer (6) is used as the output end of the fuse and is used for detonating a charged projectile containing the silver iodide grain. The time detonating fuse of the antiaircraft gun hail-suppression precipitation increasing bomb has the advantages of high reliability and good safety.

The nano composite catalyst is prepared with silver iodide, magnesium, aluminum, copper iodide, sliver iodate or other superfine particle, combustible component, adhesive, curing agent, plasticizer, cross-linking agent, anti-aging agent, speed regulator, etc. and through kneading, deairing and curing. In combustion or explosion, the nano composite catalyst produces composite AgI-NaCl-AgCl-KCl-CuI-NH4I kernels, which possess great specific surface area, high activity, and structure and crystal lattice constant similar to those of ice crystal. The catalyst has high kernel forming rate, fast kernel forming speed, excellent physical and chemical performance, less environmental pollution and easy maintenance and transportation, and is safe and efficient composite catalyst for rain making, preventing hail, eliminating cloud, and other weather modifications.

The present invention a photothermographic material including: a support; and an image-forming layer containing a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent for silver ions and a binder on at least one side of the support, wherein the photosensitive silver halide includes tabular grains with an average silver iodide content of 40 mol % or more, an average thickness whitin the range of 0.001 to 0.5 μm and an average aspect ratio of 2 or more.

A production process for a photothermographic recording material thermally developable under substantially water-free conditions comprising the steps of: (i) providing a support; (ii) producing one or more aqueous dispersions or solutions containing together a substantially light-insensitive organic silver salt, photosensitive ex-situ silver halide in catalytic association with the substantially light-insensitive organic silver salt, a reducing agent in thermal working relationship with the substantially light-insensitive organic silver salt and a binder; (iii) coating the one or more aqueous dispersions or solutions onto the support to form layers which upon drying become a photo-addressable thermally developable element; and (iv) drying the layers, wherein the photo-addressable thermally developable element contains between 0.2 and 2.5 moles of in-situ photosensitive silver iodide per mole of ex-situ photosensitive silver halide produced by reacting particles of the substantially light-insensitive organic silver salt in an aqueous dispersion with a source of iodide ion; and a recording process therefor.

Provided is a medical part with excellent antibiotic properties and antibiotic substantivity as well as high biocompatibility, and a manufacturing method therefor. After an anodic oxidation treatment, wherein a pulsed current with a frequency of 50 to 10,000 Hz is applied for an electrolytic treatment, is applied to a base material in an acidic electrolytic bath or an alkaline electrolytic bath so as to form a film, which has minute holes and/or minute protrusions and recesses preferably in the quantity of 5 x 104/mm2 or more on the surface of the base material, an iodine-impregnation treatment is applied so as to impregnate iodine or an iodine compound into said film. Polyvinyl pyrrolidone iodine, ss-cyclodextrin iodine, or silver iodine is desirable for the iodine compound. Furthermore, a biocompatible metallic material selected from Ti, Ti alloy, stainless steel, and Co-Cr alloy is desirable for the base material. The film may be formed by means of a chemical treatment, a thermal treatment, or a machining process, or a combination of these, instead of the anodic oxidation treatment. Thus, a medical part with excellent antibiotic properties and antibiotic substantivity as well as high biocompatibility can be manufactured easily and inexpensively.

The invention discloses an unmanned aerial vehicle system applied to weather modification. The unmanned aerial vehicle system comprises two engines, wherein a front-pull type engine (1) is connected with the head of an unmanned aerial vehicle and is used for providing forward pull; a rear-push type engine (2) is connected with the tail and is used for providing the push; and a pull line of the front-pull type engine (1) is overlapped with a push line of the rear-push type engine (2). During work, the two engines work simultaneously for providing the power for the unmanned aerial vehicle to fly, and when one engine is failed and shuts down, the other engine continuously works. The unmanned aerial vehicle at least can load eight silver iodide flames at high altitude of over 5,000 meters for artificial precipitation work, adopts the technology of catapult-assisted take-off and parachute recovery, and does not need special runways. A front edge deicing device is arranged on the front edges of the wings, and the problem that the wings are frozen is solved. The unmanned aerial vehicle system has the characteristics of simple and convenient operation, rapid maintenance, wide application range of using field.

A radiographic film material is described including a transparent film support having first and second major surfaces coated with a subbing layer, optionally overcoated with an antihalation undercoat. Coated adjacent on each side of the film support is a light-sensitive silver halide emulsion overcoated with a protective antistress layer. The emulsion layer has chemically and spectrally sensitized {111} tabular hexagonal grains or crystals, having silver iodide in an amount of at most 3 mole %, based on silver, covering at least 50% of the total projective surface of all grains, having an average grain thickness of less than 0.30 mum. The antistress layer, or the optional antihalation undercoat or both includes a N-amino mercapto-triazole compound containing one or more alkali soluble group(s). A radiographic screen/film combination is also described including the film material.

The present invention relates to the preparation process of nanometer silver iodide powder. Clear silver sulfate water solution containing silver nitrate in 0.1-0.4 M/L and complexing agent in 0.034-0.2 M/L is dropped slowly into clear potassium iodide water solution containing potassium iodide in 0.1-0.4 M/L, complexing agent in 0.034-0.2 M/L and dispersant in 0.01-0.04 M/L at normal temperature and normal pressure via stirring, and the product is let stand to deposit to obtain nanometer silver iodide deposit. The nanometer silver iodide deposit is filtered, washed and dried at 80-100 deg.c for 1-2.5 hr to obtain nanometer silver iodide powder with granularity below 100 nm. The process is easy to control, pollution-free and suitable for industrial production, and the product has high quality and low cost.

The invention discloses an antiaircraft gun hail-preventing and precipitation-increasing projectile time detonating fuze with a centrifugal self-destruction function. The antiaircraft gun hail-preventing and precipitation-increasing projectile time detonating fuze comprises an upper body, a chamber interior ignition mechanism, a gunpowder timing mechanism, a centrifugal self-destruction mechanism,a ball rotor safety and arming mechanism, a fuze body, a detonating tube and a booster tube; the chamber interior ignition mechanism is located on the upper part of the upper body; the gunpowder timing mechanism achieving a timed detonating function is located between the chamber interior ignition mechanism and the centrifugal self-destruction mechanism; the rear end of the centrifugal self-destruction mechanism tightly presses the ball rotor safety and arming mechanism, and thus the ball rotor safety and arming mechanism cannot rotate; the front end of the detonating tube is adjacent to theball rotor safety and arming mechanism; and the front end of the booster tube is adjacent to the rear end of the detonating tube, and the rear end of the booster tube serves as a fuze output end to beused for detonating charged explosives, containing a silver iodide grain, in a projectile. The antiaircraft gun hail-preventing and precipitation-increasing projectile time detonating fuze has the centrifugal self-destruction function, the dud rate can be greatly decreased, and safety is good.

Present invention discloses a plane precipitation enhancement system. It contains 1, weather early-warning system, 2, decision making system, 3, flying dynamic positioning, 4, validity check, 5, database and management. Present invention calculates ice saturation zone of each negative temperature layer, water vapor vertical feeding zone, water vapor integrated quantity etc indices volume on basic physical quantity computational foundation, for determining plane precipitation enhancement cloud seeding zone. On validity check, said invention adopts active contrast area and influence zone method according to operational zone silver iodide particle diffused concentration to determine plane precipitation enhancement influence zone, adopting simple times weather system layering history reversion or regional correlation statistical method to determine precipitation enhancement quantity. Said invention establishes complete service technology system.

Materials and methods of making low-sintering-temperature glass waste forms that sequester radioactive iodine in a strong and durable structure. First, the iodine is captured by an adsorbant, which forms an iodine-loaded material, e.g., AgI, AgI-zeolite, AgI-mordenite, Ag-silica aerogel, ZnI₂, CuI, or Bi₅O₇I. Next, particles of the iodine-loaded material are mixed with powdered frits of low-sintering-temperature glasses (comprising various oxides of Si, B, Bi, Pb, and Zn), and then sintered at a relatively low temperature, ranging from 425° C. to 550° C. The sintering converts the mixed powders into a solid block of a glassy waste form, having low iodine leaching rates. The vitrified glassy waste form can contain as much as 60 wt % AgI. A preferred glass, having a sintering temperature of 500° C. (below the silver iodide sublimation temperature of 500° C.) was identified that contains oxides of boron, bismuth, and zinc, while containing essentially no lead or silicon.

A method for patterning a light transmitting electrically conductive member uses a light transmitting laminate material in which an electrically conductive layer including an overcoat layer and silver nanowires embedded therein is formed on a surface of a light transmitting base film and includes a step of treating a surface of the electrically conductive layer which is not covered with a resist layer using an iodine solution to at least partially iodize the silver nanowires and a step of applying a thiosulfate solution to the surface of the electrically conductive layer which is not covered with the resist layer to remove a silver iodide exposed to a surface of the overcoat layer. Since a white cloudy or a whitened silver iodide is removed, the optical transmission characteristics of the non-electrically conductive region can be improved.

The invention relates to an AgI-based inorganic-organic hybrid semi conducting material synthesis and an application for photocatalytic degradation of a dye. A purpose of the present invention is synthesis of an inorganic-organic hybrid semi conducting material (Et2mbt)Ag2I3 capable of effectively catalyzing and degrading a methyl orange dye, wherein Et is ethyl; mbt is 2-mercaptobenzothiazole. According to the invention, organic molecules containing N and S elements are introduced in inorganic AgI, so that inorganic AgI performance can be kept, and Ag content can be reduced. In the invention, silver iodide, dibenzothiazyl disulfide, ethanol and hydroiodic acid are taken as the reaction raw materials, and monocrystalline of the compound (Et2mbt)Ag2I3 can be obtained under heat condition of a solvent. According to the invention, excellent photocatalysis performance of the hybrid semi conducting material can be used for degradation of methyl orange pollutant in life and industrial sewage, and the semiconductor performance of the hybrid semi conducting material can be used for manufacturaing the semiconductor devices.

The present invention provides a photosensitive silver halide photographic emulsion comprising a silver iodide content of 41 mol % or more and 100 mol % or less and including a silver halide to which reduction sensitization is applied in the course of particle formation, and silver halide photographic emulsion comprising 41 mol % to 100 mol % of silver iodide and subjected to at least one of chalcogen sensitization and gold sensitization to the insides of particles.

The invention discloses a preparation method of amylose-coated I3<->-complexed silver-coated iron composite nanoparticles, which comprises the following steps: synthesizing silver-coated iron nanoparticles, coating amylose on the nanoparticles, and complexing the I3<-> into the amylose molecular spiral structure to finally form the composite magnetic silver nanoparticles. By designing and synthesizing the silver-coated iron composite nanoparticles, the invention solves the problem of targeted entry of silver; by coating the starch on the nano silver, the invention solves the problems of toxicity and stability in the nano silver; by complexing the iodine ions with the amylose, the invention solves the problem of introduction of iodine; under the magnetocaloric effect, the invention solves the problem of release of iodine complex ions; by using the specific fusion action of the iodine complex ions on the nano silver, the invention solves the problem of release of silver ions in the nano silver; and by generating the silver iodide, the invention solves the problem of removal of in-vivo silver ions. Meanwhile, the designed system can comprehensively utilize the thermotherapeutic benefit of magnetic particles as well as the broad spectrum and efficient sterilization characteristics of the silver.

The invention discloses a preparation method of a silver halide composite material. The silver halide composite material is a silver halide composite which is prepared by loading silver halide on the surface of a carrier with conductive performance, wherein silver halide content occupies 1.0% to 17.5% of weight of the carrier, the silver halide is silver bromide or silver iodide, and the carrier with conductive performance is slice graphite, expansion graphite, graphene, a carbon nano tube, granular activated carbon, zeolite and titanium dioxide. The composite material prepared by the wet method and the precipitation method is capable of enabling ultrafine silver halide nanometer particles to be evenly dispersed on the surface of the carrier with the conductive performance and restrains reuniting on the surface of the silver halide.

The invention discloses an organic electroluminescent device comprising a conductive anode, a hole injection layer, a hole transport layer, a luminescent layer, an electron transport layer, an electron injection layer and a cathode. The electron injection layer comprises a first doped layer, a second doped layer, a third doped layer, a fourth doped layer and a fifth doped layer stacked in order. The first doped layer, the second doped layer, the third doped layer, the fourth doped layer and the fifth doped layer are made of mixture made by doping a doped material to a base material; the doped material comprises a silver compound and an alkali metal compound; the silver compound is silver iodide, silver sulfide, silver chloride, silver fluoride or silver bromide; the alkali metal compound is lithium fluoride, lithium azide, lithium nitride, cesium fluoride, cesium azide or cesium nitride. The invention further provides a production method of the organic electroluminescent device.

A photothermographic material containing a photosensitive silver halide, a non-photosensitive organic silver salt, a reducing agent for thermal development, and a binder, and further includiing a fluorine compound containing a fluoroalkyl group having 2 or more carbon atoms and 13 or less fluorine atoms. The material is characterized in that the photosensitive silver halide contains silver iodide within a range of 40 mol % to 100 mol %.

The invention provides a preparation method and application of an AgI/BiOBr heterojunction photocatalyst. The method comprises the following steps that firstly, a bismuth salt substance and a brominesource substance are dissolved in ethylene glycol respectively, and the two solutions are mixed and are stirred for 1 h; a mixed solution is transferred into a reaction kettle and reacts at 125-185 DEG C for 14-22 h so as to obtain a milk white solid; the milk white solid is washed, dried and ground so as to obtain dried BiOBr powder; silver salt is dissolved in 40 ml of deionized water, the prepared BiOBr powder is added into the solution, an iodine source is dropwise added into the solution, and stirring is carried out for 60 minutes so as to obtain a yellow precipitate; and the yellow precipitate is washed, dried and ground, and obtained yellow powder is the AgI/BiOBr heterojunction photocatalyst. The AgI/BiOBr heterojunction photocatalyst prepared through the method is used for degrading organic pollutants in water; and compared with photocatalysts such as commercial TiO2 (P25), pure-phase AgI and pure-phase BiOBr, the photocatalyst has higher visible-light catalytic activity.

The invention discloses a preparation method of a silver iodide/platy bismuth-rich type bismuth iodide composite photocatalytic material. The method includes the steps that firstly, Bi(NO3)3 5H2O andKI serve as raw materials, BiOI is prepared through a chemical precipitation method, BiOI powder is evenly dispersed in water, NaOH serves as a precipitation transforming agent, AgNO3 serves as a silver source, under a stirring condition, a sodium hydroxide solution and a silver nitrate agent are sequentially dropwise added into BiOI turbid liquid, and a AgI/Bi5O7I composite is generated through an in-situ deposition/precipitation transforming method. According to the AgI/Bi5O7I composite prepared through the method, AgI tightly binds to Bi5O7I, heterojunctions are formed, and excellent photocatalytic activity is generated under the synergistic effect of AgI and Bi5O7I. The preparation method is carried out at room temperature, has moderate conditions, and is short in reaction time, easy and convenient to operate and capable of being used for large-scale industrial production, and energy saving and environmental protection are achieved.