98results about How to "Reduce dissolution rate" patented technology

The invention discloses a precursor suspension of a lyotropic liquid crystal. The precursor suspension comprises lyotropic liquid crystal material, organic solvent, oil phase and a drug, wherein the weight percentage of the oil phase in the precursor suspension is 2-50 percent, the weight percentage of the drug in the precursor suspension is 1-30 percent, and the weight ratio of the lyotropic liquid crystal material and the organic solvent in the precursor suspension is 2-9:1. According to the invention, through the adding of the oil phase into the precursor suspension, the stability of the suspension is improved, the sedimentation rate is reduced, and the strength and the adhesive force of the gel formed are enhanced at the same time; the gel formed in the body is more liable to stay at a lesion location and less liable to be relocated and the shape is less liable to be damaged by the mechanical motion of the body, so that the drug therapy can be located effectively; and the preparation technology is simple and the precursor suspension of the lyotropic liquid crystal is a partial slow-release drug delivering system provided with a favorable perspective.

The invention discloses a synergist for assisting wet-process desulphurization of a thermal power plant. The synergist comprises the following components in percentage by mass: 55%-60% of organic acid, 15%-20% of organic acid salt, 10%-15% of oxidized catalyst, and 10%-15% of chelating dispersing agent. The acidity of the organic acid is stronger than that of carbonic acid and weaker than that of sulphurous acid, and the organic acid salt is used for providing organic acid groups. The synergist can reduce the surface tension between gas and liquid and improve the dispersion speed of gas to liquid; the concentration of calcium ions in the liquid solution can be increased, the crystallization speed of sulfate ions can be accelerated, and the desulfurization efficiency of the system and the utilization rate of lime stone can be improved; in addition, the characteristics of calcium sulfate crystals can be changed, so that muddy crystals can be produced, the crystals can be prevented from being deposited at parts, such as a spray nozzle.

The invention provides a crystal pulling process method for monocrystalline silicon doped with a volatile dopant, and the crystal pulling process method comprises the following steps: in an equal-diameter stage of crystal growth, a single crystal furnace adopts low furnace pressure not exceeding 18Torr, and the flow of argon introduced into the single crystal furnace is kept in a constant range. The method realizes equal-diameter crystal pulling under lower furnace pressure. By means of the process method, the axial resistivity attenuation slope of the single crystal doped with the volatile dopant, especially gallium, can be reduced, and the effective length of the resistivity of the single crystal can be increased.

The invention relates to a kind of acidic-solution spraying dry-way stack-gases desulfurization and tempering intensification method, which is applicable in the field of stack gases desulfurization or desamination and the field of stack gases tempering. Spraying the acidic solution whose PH<=5.5 in the form of vaporific into stack gases, which contains fly ash or granule of the desulfurization agent in the desulfurization reactor or the flue between the tail of coal burning boiler and dust remover. So it can make the fog drip catch fly ash or granule of the desulfurization agent in stack gases efficiently and then form the liquid film on it. With the moisture in fog drip evaporating rapidly, the PH of remaining liquid film tends to step down and the acidity tends to be higher so that it is favorable to digesting the alkaline metal ion and the transition state metal ion having catalysis and oxidization. Then the sweet effective constituent granule contained in granule can be activated and participate in desulfurization reaction. In the result of that described above, then invention can intensify to decline the stack gases tempering of dust to the resistance and the oxidative extent to the sweet by-product; it can decline the proportion of astable sulfite; it can reduce the consumption of Ca matrix desulfurization agent for carbon dioxide; and finally it can improve the use ratio and the sweet efficiency of the drying-way desulfurization agent.

The invention discloses a cleaning method of an anode net of an ionic membrane electrolysis bath. Through the method, a compound scale layer on the surface of the anode net can be effectively removed, a surface coating of the anode net can be prevented from being damaged, and a voltage of the electrolysis bath can be lowered. The method includes the steps of carrying out pre-cleaning and leakage testing on a cleaning bath through pure water and placing the electrolysis bath into the cleaning bath after a cathode and an anode of the electrolysis bath are pressed by plastic membranes at an interval; preparing a primary cleaning agent through the pure water, heating the primary cleaning agent to 55-85 DEG C, then cleaning the anode net of the electrolysis bath for 1-4 hours, draining the primary cleaning agent and adding the pure water for flushing, wherein the primary cleaning agent is composed of 2-6% of hydrochloric acid and 0.2-0.3% of lan-826 corrosion inhibitors in concentration percentage; and preparing a secondary cleaning agent through the pure water, heating the secondary cleaning agent to 55-85 DEG C, then cleaning the anode net of the electrolysis bath for 4-6 hours, draining the secondary cleaning agent and adding the pure water for flushing, wherein the secondary cleaning agent is composed of 3-8% of citric acid, 0.2-0.35% of lan-826 corrosion inhibitors and 3-6% of sulfamic acid in concentration percentage.

The invention discloses a Bacillus megaterium strain ZT-P and application thereof. The strain ZT-P is Bacillus megaterium, has the property of dissolving with organophosphorus and inorganic phosphorusbacteria, and was preserved in CGMCC on April, 2018, with a strain preservation number of CGMCC NO.15602. The strain ZT-P provided by the invention has high vitality and adaptability, and can be widely used for fertilizer and pesticide reducing treatment of microbial fertilizer. By tests, the phosphate solubilization capacity of the microbial fertilizer prepared from the strain ZT-P in soil during flask shaking at the 5th day reaches maximum 156.7 [mu]g / mL. Compared with the phosphate solubilization rate before mutagenesis, the phosphate solubilization rate of the strain is improved by 20 percent, and dissolution rates of organophosphorus and inorganic phosphorus in the soil are reduced. Therefore, according to the prepared microbial organic fertilizer, dissolution periods of the organophosphorus and the inorganic phosphorus are shortened, and dissolved quantities of the organophosphorus and the inorganic phosphorus are reduced.

A silicone-based adhesive protective film and an optical member including the same are provided. The silicone-based adhesive protective film is formed of a composition including a silicone resin, a crosslinking agent, and a curing catalyst, and the silicone-based adhesive protective film has a peel strength of about 3 gf / inch or less with respect to a glass plate at 25 DEG C., and a modulus of about 0.5 MPa to about 7 MPa at 25 DEG C. The silicone-based adhesive protective film of the present disclosure has low peel strength, a low peel strength change rate, and good wettability.

The invention discloses retarder-free waterproof magnesium ammonium phosphate cement and a preparation method thereof. The cement comprises dead burned magnesia coated with graphene oxide, ammonium dihydrogen phosphate and mineral admixtures, wherein the mass ratio of dead burned magnesia coated with graphene oxide and ammonium dihydrogen phosphate is (62-78):(22-38), and the mineral admixtures are 5-15% of the total mass of dead burned magnesia and ammonium dihydrogen phosphate. According to the cement, dead burned magnesia powder is pretreated by graphene oxide, so that a comparatively obvious isolation effect is formed between magnesia and an external environment, therefore, the dissolution rate of magnesia is greatly decreased, a forming process of a hydration product is delayed, and the heat release of a whole reaction system is reduced; macroscopically, the time of coagulation is greatly prolonged, and any retarders do not need to be added. Moreover, a dissolution process of the hydration product and phosphate is inhibited, a large amount of pores are prevented from being formed in the cement, and the strength of hardened cement paste is ensured.

The invention discloses a stabilization medicament of lead-zinc waste rocks and tailings as well as preparation and application of the stabilization medicament. The stabilization medicament is prepared from powder and liquid; the powder is prepared from the following components according to the weight percent in the powder: 45 percent to 60 percent of quick lime, 18 percent to 26 percent of a clay ore material, 15 percent to 23 percent of a phosphorus-based compound and 4 percent to 8 percent of sodium trithiosulfate; the liquid is prepared from the following components according to the weight percent in the liquid: 4 percent to 12 percent of a phosphorus-based compound and 88 percent to 96 percent of water. The stabilization medicament disclosed by the invention can be used for treating the problem of dissolving of heavy metal in the lead-zinc waste rocks and tailings and lead-zinc ions can be converted into an ore type compound, so that the dissolving speed of the lead-zinc ions under a leaching state is reduced, and furthermore, risks of secondary pollution caused by the fact that the tailings are discharged are effectively controlled.

The invention belongs to the technical field of ocean engineering antifouling paint preparation, and particularly relates to a transparent anti-fouling membrane preparation method. The technological process comprises the steps that hydrotalcite nanosheets are dispersed in distilled water to obtain a hydrotalcite aqueous solution through ultrasound, polyvinyl alcohol is added into the hydrotalcite aqueous solution to be heated till polyvinyl alcohol is dissolved to form a mixed solution, standing is conducted on the mixed solution, the mixed solution is naturally cooled and then dispersed through ultrasound, phenolic amide antifoulant is added into the mixed solution, and an anti-fouling mixed solution is obtained through ultrasonic dispersion; the quartz surface is coated with the anti-fouling mixed solution through a spin-coating method or a coating method, and a transparent anti-fouling membrane is obtained after drying; the transparent anti-fouling membrane protects fouling of the parts such as detection shots, light sources and submarine windows of marine optical instruments. The molecular structure and preparation method of the transparent anti-fouling membrane are simple, the technology is scientific and reliable, the raw materials are low in cost and easy to obtain, the light transmittance is high, the antifouling activity is good, the effect is obvious, the application environment is friendly, and an important application prospect in the marine antifouling field is achieved.