13results about How to "Change concentration" patented technology

The present invention provides a kind of spherical gold powder and preparation method thereof, relate to the technical field of precious metal powder preparation, the preparation method uses aqua regia to prepare chloroauric acid solution, and uses concentrated hydrochloric acid to adjust pH to 1.5-2, then adds ammonia water to adjust pH to 7-9, stirs 20-60s, then adds concentrated hydrochloric acid to adjust pH to 1.2-2 again, obtains mixed solution B;Then, the first dispersant solution is poured into the aforementioned mixed solution B, after stirring evenly, the mixed solution A of the second dispersant and the reducing agent is quickly added, after stirring reaction, sedimentation, post-treatment, obtains spherical gold powder. Wherein, spherical gold powder of different sizes with a particle size within the range of 0.3-4 μm can be prepared by adjusting pH twice, and adding two different dispersants in a specific order of addition can make the prepared spherical gold powder uniform in particle size, good in dispersibility, regular in shape and smooth in surface. The preparation method reacts rapidly, the process is short and stable, and it has been stably expanded to 500g, which can realize large-scale industrial production.

The application discloses an environment-friendly rubber composite material and a preparation method and application thereof, and relates to the technical field of tire rubber materials.The environment-friendly rubber composite material comprises, in parts by mass, 100 parts of a rubber matrix, 10-60 parts of a bio-based filler, 0.5-10 parts of an interface modifier, 1-8 parts of a vulcanizing component and 0.5-5 parts of a crosslinking aid; wherein the rubber matrix comprises natural rubber and butadiene rubber; the bio-based filler comprises at least one of lignin, cellulose or a derivative thereof; the interface modifier comprises a compounded system of a silane coupling agent and a bio-based small molecule containing multiple functional groups; and the crosslinking aid comprises a borate compound and a low-molecular polymer containing a dynamic hydrogen bond structure.The application also provides a preparation method and application of the material.The application improves the proportion of the bio-based material, improves the long-term stability of the interface between the bio-based filler and the rubber matrix, reduces the interface damage accumulation and dynamic heat generation under the action of cyclic load, and improves the fatigue performance and comprehensive service performance of the rubber composite material.

The utility model discloses a liquid medicine concentration regulator, which belongs to the technical field of liquid medicine and comprises a mixing tank, support plates are fixedly connected to two sides of the top of the mixing tank, a bearing plate is fixedly connected to the tops of the support plates, and a quantitative tank is fixedly connected to the top of the bearing plate. Liquid needing to be prepared with liquid medicine is conveyed into the mixing tank through the liquid injection opening in the left side of the mixing tank, then the stirring rod is driven by the motor to rotate, the stirring blades are driven by the stirring rod to rotate, the liquid medicine is stirred through the stirring blades so that the liquid medicine can be evenly mixed, and the mode that manual stirring is replaced with electric stirring is adopted; the stirring time is shortened, the quality of a finished product is greatly improved, after stirring is completed, the concentration of medicine is analyzed through the medicine concentration analyzer, an analysis result is transmitted to the display screen, a user checks through the display screen, and when the concentration of the medicine reaches the standard, the medicine is output for use.

The present invention relates to a semi-quantitative urine zinc test strip, a preparation method and application thereof, and belongs to the field of analysis and detection. A semi-quantitative urine zinc test strip is provided, which includes a zinc test strip; the zinc test strip is obtained by soaking and drying the test strip in a substrate impregnation liquid, and the substrate impregnation liquid includes: 0.01% by mass of 2-(5-bromo-2-pyridyl azo)-5-[N-propyl-N-(3-sulfopropyl) amino] phenol disodium salt, 0.5-1M N-2-hydroxyethylpiperazine-N'-2-ethanesulfonic acid, 0.1%-1% by mass of polyethylene glycol monooctylphenyl ether, 1%-5% by mass of a masking agent, and the solvent is deionized water; wherein the masking agent includes sodium hexametaphosphate and N'-(sodium toluenesulfonate) thiourea. This urine zinc semi-quantitative test strip can realize visual distinction and interpretation of low concentration zinc ions, and has strong anti-interference ability and high accuracy, making it suitable for home use.

This invention discloses a slow-release granule formulation of sodium alginate-biochar loaded with thiamethoxam, its preparation method, and its application. The slow-release granule uses biochar as the adsorbent carrier to adsorb thiamethoxam and sodium alginate as the encapsulating material, which is then cross-linked and solidified by dripping calcium chloride solution. The mass ratio of biochar to thiamethoxam is (10~30):1, the mass-to-volume ratio of sodium alginate to water is 1.5~2.0 g:100 mL, and the concentration of the calcium chloride solution is 1.5%~3.0%. The prepared slow-release granule has a cumulative release time of over 90 hours in distilled water, with no obvious burst release phenomenon. Pot experiments show that it maintains a continuous control effect on eggplant thrips for 7 days after application, which is superior to conventional spraying treatment. This invention has a simple preparation process, is environmentally friendly, and has excellent slow-release performance, making it suitable for green control of agricultural pests.

The invention discloses a polymerization method of a polypropylene composition, and belongs to the field of polymerization. An olefin monomer comprising propylene is contacted with a catalyst system in the upstream polymerization sections of a gas phase copolymerization reactor to form polymer particles, and a condensing medium is introduced in at least one upstream polymerization section or between or after the upstream polymerization sections; in the upstream polymerization section, the obtained polymer particles and the condensing medium enter the gas phase copolymerization reactor in the form of wet particles, and in the presence of the condensing medium, propylene and alpha-olefin are polymerized in the gas phase copolymerization reactor to obtain the polypropylene composition. The condensing medium can effectively improve heat dissipation of an upstream polymerization section, enables polymer particles to be distributed more uniformly, avoids kettle sticking and caking phenomena caused by generation of local hot spots, can also improve the heat removal capability and space time yield of a gas phase copolymerization reactor, enhances the copolymerization activity of olefin monomers in the gas phase copolymerization reactor, and improves the yield of olefin monomers in the gas phase copolymerization reactor. And the bonding condition of the particle surface is improved.

The invention discloses a precisely-controlled automatic acid preparation device, and relates to the field of acid preparation, the precisely-controlled automatic acid preparation device comprises an acid preparation cylinder and fixed supporting legs uniformly arranged at the bottom of the acid preparation cylinder, the tops of the supporting legs are fixedly connected with the bottom of the acid preparation cylinder, and the outer surface of the acid preparation cylinder is fixedly connected with an acid storage mechanism; acid outlet pipes are uniformly arranged on the inner wall of the acid preparation barrel, and the outer surfaces of the acid outlet pipes are fixedly connected with the inner wall of the acid preparation barrel; the water storage mechanism is used for purifying water required by acid preparation; the waste gas mechanism is used for purifying poisonous gas generated by acid preparation, water flow enters the water storage tank along the water inlet pipe, the descaling mechanism can start to work firstly, a filter plate can separate some particle impurities existing in water firstly, the impurity particles are prevented from reacting with hydrochloric acid, and after water is descaled, the water can be descaled through the water inlet pipe, so that the water purification efficiency is improved. Water can be in contact with the nanofiltration membrane layer, and calcium and magnesium ions in the water can be adsorbed by the nanofiltration membrane layer, so that incrustation scale generated by high-temperature reaction and reaction with acid are avoided.

The utility model relates to an aromatherapy sleep aiding device, which comprises a non-slip mat, a base, a chute, a limit block, an aromatherapy box and an adjustable fragrance extinguishing component, the bottom of the base is connected with the non-slip mat in a bonding manner, the side wall of the base is provided with the chute, the aromatherapy box is arranged in the chute in a penetrating manner, the limit block is fixedly arranged on the side wall of the base, and the adjustable fragrance extinguishing component is arranged in the chute. The base is sleeved with the adjustable fragrance extinguishing assembly, the adjustable fragrance extinguishing assembly is connected with the limiting block in a clamped mode, a stretching rope is fixedly arranged on the side wall of the fragrance box, a fragrance containing groove is formed in the fragrance box, the adjustable fragrance extinguishing assembly comprises a fixing cylinder, and a limiting groove is formed in the side wall of the interior of the fixing cylinder. The concentration of fragrance emitted by the sleep aiding device can be adjusted according to needs, meanwhile, burning aromatherapy powder can be extinguished in time according to needs, and waste of the aromatherapy powder can be reduced.

The present invention provides a device for testing the energy consumption of pulping of a pulper, and relates to the technical field of testing the energy consumption of pulping, comprising a pulper body, wherein an inlet end is arranged at the top of the pulper body, and an outlet pipe is opened at the bottom side of the pulper body, and a drive replacement component is arranged at the bottom of the pulper body, and the drive replacement component comprises a slide rail, and the concentration and volume of the raw materials are adjusted by adjusting the component, and the raw materials are sent into the interior of the pulper through a conveying pipe, so that the influence on the energy consumption under different concentrations and volumes can be obtained, and the feed speed at the inlet end of the pulper is changed by the conveying component, so as to obtain the influence on the energy consumption of the pulper under different feed speeds, and the drive motors of different powers can be replaced by the drive replacement component to drive the pulper to grind, so as to obtain the influence of different power driving devices on the refining energy consumption, and the low consumption factors when different raw materials are used can be obtained by comparison, so that the test is simpler.

The utility model discloses a right-angle parallel coaxial light source which comprises a bottom plate, an inner containing seat, a top plate, an expansion cylinder and a lamp bead shell, the bottom plate, the inner containing seat and the top plate are integrally installed, the expansion cylinder and the lamp bead shell are located on the inner containing seat, a light-emitting cover plate is installed on the top plate, the expansion cylinder is fixedly installed on one side wall of the inner containing seat, and the lamp bead shell is screwed on the expansion cylinder in a threaded mode. The fixing mode among the bottom plate, the inner containing base and the top plate and the fixing mode of the expansion cylinder on the inner containing base can be bolt installation or other fixing modes, a steering shaft is connected to the side, back on to the lamp bead shell, of an inner cavity of the inner containing base, a light reflecting plate is arranged on the steering shaft, and the light reflecting plate is formed by integrally welding an upper plate body and a lower plate body. The upper plate body fixedly sleeves the steering shaft, and the angle of one side of the upper plate body facing the expansion cylinder is different from that of one side of the lower plate body facing the expansion cylinder. According to the right-angle parallel coaxial light source, the intensity, the concentration ratio, the position and the angle of light rays emitted from the light-emitting cover plate can be conveniently changed, so that the actual lighting requirements under different conditions can be met.

This invention discloses a method for the coordinated removal of products from near-atomic-scale electrochemical machining, along with its system apparatus and applications. The core of this method lies in the synergistic use of chemical complexation, pulsed electric field modulation, and interfacial electrostatic repulsion to proactively address the problem of product blockage within near-atomic-scale machining channels. Specifically, by adding a strong complexing agent to the electrolyte, the metal ions generated during machining are converted in situ into soluble complexed anions. A composite waveform, including an anodic pulse during machining, a zero-potential intermittent period during diffusion, and a reverse cathode pulse during impurity removal, provides dual impurity removal momentum through diffusion and electromigration. Simultaneously, the inner wall of the ion channel protein is negatively modified to reduce product transport resistance and adsorption through electrostatic repulsion. The synergistic effect of these three mechanisms enables effective and continuous product management without compromising machining locality. Correspondingly, this invention also provides a dedicated machining system for implementing this method and its application in the machining of easily passivated metal materials.

An information processing system, a storage medium, and an information processing method are provided, and the information processing system includes a processor that performs a process of processing white pixels and color pixels in image data including the white pixels and the color pixels, when a sum of respective values of color pixels around a pixel of interest, which is a color pixel of interest, in a predetermined region including the pixel of interest is equal to or less than a threshold value that differs for each pixel of the image data, the correction unit corrects the pixel of interest.

The utility model discloses a steel wire surface phosphating pickling processing device of steel wire processing technical field, including processing box, the top of processing box is installed the box cover, and the inner bottom wall of processing box is connected with a plurality of baffle, and processing box is divided into pickling tank, washing tank no.