638 results about "Potassium carbonate" patented technology

The invention discloses a fluoride salt-free nitrate-free cast iron enamel semitransparent glaze as well as a preparation method and application thereof, and belongs to the technical field of enamel. The semitransparent glaze is prepared from quartz, anhydrous borax, sodium carbonate, potassium carbonate, calcium carbonate, potassium feldspar, zinc oxide, lithium carbonate, zirconium silicate, titanium dioxide, aluminum oxide, trisodium phosphate, antimony oxide, magnesium carbonate and barium carbonate according to a specific mass ratio. The preparation method comprises the steps of raw material mixing, high-temperature melting under a pure oxygen condition, wiredrawing detection, quenching and the like. The semitransparent glaze is completely free of fluoride salt and nitrate, the problems of fluoride emission and environmental protection equipment blockage are avoided from the source, the fluorine content of the product is not detected through detection, the product meets the requirements of European Union REACH regulations, meanwhile, the product has good porcelain surface, luster and low-temperature firing adaptability, and is suitable for cast iron matrixes, the firing temperature is 740-760 DEG C, and the firing time is 2-3 hours. The method can be used for producing green and environment-friendly enamel products.

The invention relates to the technical field, in particular to an ultralight foamed ceramic hollow sphere prepared from iron lepidolite tailings and a preparation method and application of the ultralight foamed ceramic hollow sphere. The foamed ceramic hollow sphere is prepared from the following raw materials: iron lepidolite tailings, silicon carbide, bentonite, sodium carbonate and potassium carbonate; in percentage by mass, the content of the iron lepidolite tailings is 90 to 96.4 percent; the content of the silicon carbide is 0.1-1%; the iron lepidolite tailings are prepared from the following components in percentage by mass: 77 to 80 percent of SiO2, 10 to 13 percent of Al2O3, 1.3 to 1.6 percent of Fe2O3 and 0.1 to 0.17 percent of Li2O. The ultralight foamed ceramic hollow sphere is prepared by using the iron lepidolite tailings, the silicon carbide, the bentonite, the sodium carbonate and the potassium carbonate as raw materials, can meet various market requirements of heat preservation, heat insulation, sound insulation, noise reduction and the like, and brings remarkable economic benefits and social benefits.

The invention relates to the technical field of piezoelectric light-transmitting functional ceramics, and discloses a high-light-transmitting ceramic material and a preparation method thereof.The preparation method comprises the following preparation steps that sodium carbonate, potassium carbonate, niobium pentoxide, antimony trioxide, samarium oxide and zirconium dioxide powder raw materials are taken, and after primary ball milling and drying are conducted on the powder raw materials, mixed powder is obtained; carrying out pre-sintering and secondary ball milling on the mixed powder, carrying out compression molding to form a tablet, and sintering and polishing the tablet to obtain a ceramic matrix; and spraying the composite slurry to the surface of a ceramic matrix, carrying out heat treatment, and cooling to room temperature to obtain the high-transmittance ceramic material. The antimony trioxide, the samarium oxide and the zirconium dioxide are co-doped, an antimony-samarium-zirconium liquid phase is generated in the ceramic material, pores of the ceramic material are filled and eliminated, and the prepared ceramic material has excellent optical transmittance, piezoelectric property and mechanical strength.

The invention discloses a crown ether functionalized covalent organic framework material as well as a preparation method and application thereof, and the method comprises the following steps: adding a covalent organic framework material, 4-bromobenzo-15-crown-5, potassium carbonate and potassium iodide into an acetone solution for reaction, washing the obtained crude product, performing Soxhlet extraction with tetrahydrofuran for a certain time, and drying to obtain the crown ether functionalized covalent organic framework material. The crown ether functionalized covalent organic framework material is obtained. Compared with a synthesis method of crown ether functionalized COFs in the prior art, the method has the advantages that the crown ether (4-bromobenzo-15-crown-5) can be grafted to the COFs in one step, the Na < + > adsorption capacity and the adsorbent recycling performance are greatly improved, the synthesis method is simple, and synthesis of the crown ether functionalized COFs is greener, more convenient and more economical.

The invention discloses fluoride-salt-free and nitrate-free high-temperature acid-resistant translucent glaze for steel plate enamel as well as a preparation method and application of the translucent glaze, and belongs to the technical field of enamel. The semitransparent glaze is prepared from quartz, anhydrous borax, titanium dioxide, trisodium phosphate, potassium carbonate, lithium carbonate, aluminum oxide, zinc oxide and sodium carbonate according to a specific mass ratio. The preparation method comprises the steps of raw material mixing, high-temperature melting under a pure oxygen condition, wiredrawing detection, quenching and the like. The semitransparent glaze is completely free of fluoride salt and nitrate, the problems of fluoride emission and environmental protection equipment blockage are avoided from the source, the fluorine content of the product is not detected through detection, the product meets the requirements of European Union REACH regulations, meanwhile, the product has good porcelain surface, luster and firing adaptability, is suitable for a steel plate matrix, has the firing temperature of 840-880 DEG C and the firing time of 820-830 minutes, and is suitable for a steel plate. The method can be used for producing green and environment-friendly enamel products.

The invention discloses a fluoride-salt-free and nitrate-free cast iron enamel zirconium white glaze as well as a preparation method and application thereof, and belongs to the technical field of enamel. The zirconium white glaze is prepared from quartz, borax pentahydrate, magnesium carbonate, potassium carbonate, potassium feldspar, zinc oxide, aluminum hydroxide, calcium carbonate, zirconium silicate, sodium tripolyphosphate and lithium carbonate according to a specific mass ratio. The preparation method comprises the steps of raw material mixing, high-temperature melting under a pure oxygen condition, wiredrawing detection, quenching and the like. The zirconium white glaze is completely free of fluoride salt and nitrate, the problems of fluoride emission and environmental protection equipment blockage are avoided from the source, the fluorine content of the product is not detected through detection, the product meets the requirements of European Union REACH regulations, and meanwhile, the zirconium white glaze has good porcelain surface, luster and firing adaptability, is suitable for cast iron matrixes, has the firing temperature of 740-760 DEG C and the firing time of 87-87 hours, and can be widely applied to cast iron substrates. The method can be used for producing green and environment-friendly enamel products.

The invention belongs to the technical field of coal combustion, and particularly relates to an environment-friendly rare earth catalyst as well as a preparation method and application thereof in promoting coal combustion. The catalyst is prepared from composite rare earth oxide, calcium oxide, potassium carbonate, ferrous sulfate, kaolin, diatomite and a multi-component composite assistant component in a specific proportion through the steps of slurry ultrasonic activation, rare earth coating, assistant step-by-step doping, microwave drying, protective atmosphere roasting and the like. The catalyst is unique in structure and good in dispersity, the coal combustion efficiency can be remarkably improved, the burnout temperature and the carbon content of fly ash are reduced, emission of flue gas pollutants such as CO, NOx and SO2 is effectively reduced, and the catalyst is suitable for the fields of energy conservation, carbon reduction and environment-friendly treatment of coal-fired power plants and industrial boilers.

The invention discloses nano-engineered microalgae for photoimmunotherapy of melanoma and a preparation method of the nano-engineered microalgae. The preparation method comprises the following steps: S1, respectively putting tannic acid, potassium carbonate, sodium citrate and HAuCl4. 3H2O into water to prepare a tannic acid solution with the concentration of 4.3 mg / mL, a potassium carbonate solution with the concentration of 20.7 mg / mL, a sodium citrate reduction solution with the concentration of 0.7 mg / mL and a HAuCl4 solution with the concentration of 10.0 mg / mL; s2, dissolving a tannic acid solution and a potassium carbonate solution in the sodium citrate reduction solution to obtain a mixed solution; s3, the mixed solution is heated under stirring, a HAuCl4 solution is dropwise added, stirring continues, and AuNP is obtained; and S4, mixing the AuNP obtained in the step S3 with the microalgae PCC 7942, standing, incubating, and centrifugally washing, so as to obtain the nano-engineered microalgae PCC-coated AuNP. The functionalized microalgae drug delivery system (PCC-coated AuNP) prepared by the invention has the performance of respectively generating O2 and H2 through photosynthesis and photocatalytic reaction under the irradiation of 635 nm red light.

The invention discloses fluoride-salt-free and nitrate-free low-temperature pearlescent glaze for steel plate enamel as well as a preparation method and application of the pearlescent glaze, and belongs to the technical field of enamel. The pearlescent glaze is prepared from quartz, anhydrous borax, titanium dioxide, magnesium carbonate, sodium tripolyphosphate, potassium carbonate, lithium carbonate, potassium feldspar, zinc oxide and V-26 according to a specific mass ratio. The preparation method comprises the steps of raw material mixing, high-temperature melting under a pure oxygen condition, wiredrawing detection, quenching and the like. The pearlescent glaze is completely free of fluoride salt and nitrate, the problems of fluoride emission and environmental protection equipment blockage are avoided from the source, the fluorine content of the product is not detected through detection, the product meets the requirements of European Union REACH regulations, meanwhile, the pearlescent glaze has good porcelain surface, luster and low-temperature firing adaptability, is suitable for a steel plate matrix, has the firing temperature of 760-800 DEG C and the firing time of 10-20 minutes, and is suitable for a steel plate. The method can be used for producing green and environment-friendly enamel products.

The invention discloses fluoride-salt-free and nitrate-free low-temperature acid-resistant translucent glaze for steel plate enamel as well as a preparation method and application of the translucent glaze, and belongs to the technical field of enamel. The semitransparent glaze is prepared from quartz, anhydrous borax, titanium dioxide, trisodium phosphate, potassium carbonate, lithium carbonate, aluminum oxide, zinc oxide and sodium carbonate according to a specific mass ratio. The preparation method comprises the steps of raw material mixing, high-temperature melting under a pure oxygen condition, wiredrawing detection, quenching and the like. The semitransparent glaze is completely free of fluoride salt and nitrate, the problems of fluoride emission and environmental protection equipment blockage are avoided from the source, the fluorine content of the product is not detected through detection, the product meets the requirements of European Union REACH regulations, meanwhile, the product has good porcelain surface, luster and low-temperature firing adaptability, and is suitable for steel plate substrates, the firing temperature is 760-800 DEG C, and the firing time is 2-3 hours. The method can be used for producing green and environment-friendly enamel products.

The invention relates to a specific PET molecular probe of a targeted KRASG12D mutant as well as a preparation method and application of the specific PET molecular probe. Pyridopyrimidine compounds and R5 are subjected to cooling reaction under the action of N, N-diisopropylethylamine to generate a compound 2; the compound 2 and (2-fluorotetrahydro-1H-pyrrolizine-7A (5H)-yl) methanol are subjected to a heating reaction under the action of N, N-diisopropylethylamine, and a compound 3 is generated; carrying out heating reaction on the compound 3 and biphenyl boronic acid pinacol ester under the action of N, N-diisopropylethylamine and tetrakis (triphenylphosphine) palladium to generate a compound 4; carrying out heating reaction on the compound 4 and 1, 2-bis (tolyloxy) alkane under the action of potassium carbonate to generate a compound 5; the compound 5, radioisotope < 18 > F and an anion complexing agent are subjected to a heating reaction under the action of potassium carbonate to generate the trisubstituted pyridopyrimidine < 18 > F labeled PET molecular probe. Compared with the prior art, the kit has a positioning diagnosis effect on KRASG12D mutant tumors, and image typing of mutant and non-mutant tumors and pathological evaluation after tumor treatment are realized at the same time.

The invention belongs to the technical field of organic fertilizer production, and discloses a method for preparing a high-fulvic-acid type organic fertilizer through minute-level decomposition of chicken manure and application of the high-fulvic-acid type organic fertilizer. The preparation method comprises the steps that urea peroxide, potassium percarbonate, potassium hydroxide and ferrous sulfate are added into pretreated chicken manure, the mixture is stirred and fully mixed at the temperature of 20-30 DEG C and then stands, decomposition is conducted, and the high-fulvic-acid type organic fertilizer is obtained. The decomposition time does not exceed 30 min, and the content of fulvic acid in the high fulvic acid type organic fertilizer is 10-15 wt%; the application comprises the following steps: fully mixing the high fulvic acid type organic fertilizer with the attapulgite and the xanthan gum, granulating by a drum method, and then uniformly applying the mixture to the surface of soil according to 67-100kg / mu. According to the invention, the combination of urea peroxide, potassium percarbonate, potassium hydroxide and ferrous sulfate is utilized to quickly compose the chicken manure, the fulvic acid content and humification degree of the composted chicken manure are high, effective humification of the chicken manure within a short time is realized, the fertilizer efficiency is improved, and the method has important application prospects.

The invention discloses a potassium propionate continuous synthesis process, and relates to the technical field of potassium propionate synthesis, the process comprises the following steps: S1, raw material pretreatment: selecting fermentation waste liquid containing propionic acid and acetic acid and potassium ore leaching liquid containing potassium hydroxide and potassium carbonate as composite raw materials, adding a composite chelating agent into the potassium ore leaching liquid, and uniformly stirring; according to the method, the composite raw material system composed of the fermentation waste liquid and the potassium ore leaching liquid is adopted, and the composite chelating agent is added, so that resource utilization of industrial waste is achieved, the raw material cost is reduced, meanwhile, impurities are prevented from interfering with continuous reaction, and through gradient temperature control-pressure cooperative regulation and linkage regulation of the PLC system, the yield is increased. The problem of product deliquescence caused by local overheating is solved, volatilization loss of propionic acid is reduced, the adaptability of the technology to raw material batch fluctuation is improved through raw material concentration online detection and dynamic parameter adaptation, the continuous production stability is guaranteed, and finally synchronous improvement of the potassium propionate synthesis efficiency and the product quality is achieved.

The invention relates to a resourceful treatment method for a bauxite ore washing tail mud reservoir, which comprises the following specific steps: 1, carrying out cyclone classification on tail mud in the tail mud reservoir, and separating out coarse particles with A / S greater than or equal to Y and A / Slt; and Y fine particles. And 2, carrying out flotation treatment on the coarse particles. And potassium carbonate is added as a dispersing agent and a pH value adjusting agent, the pH value of the ore pulp is adjusted to 8.0-10.5, then sodium oleate is added as a collecting agent, and finally bauxite concentrate and flotation tailings are obtained. And 3, dehydrating the fine particles to obtain dehydrated tail mud with the water content of less than or equal to 20%. And 4, adding the flotation tailings and the dehydrated tail mud into a curing agent or a soil conditioner to form cultivable soil which is used for ecological restoration of the stony desertification area. Potassium carbonate is used for replacing sodium carbonate to reinforce flotation, so that tailings can be used as potassium-rich cultivation soil; the dam break risk can be eliminated after the tail mud is dehydrated; tailings and fine particles are compounded to form cultivation soil to treat stony desertification, silicon fertilizer is synchronously produced, the annual income is larger than or equal to 0.3 million yuan, and safe, resource and ecological cooperative treatment is achieved.

The invention provides a preparation method of biomass-derived porous carbon with ionic adsorption potential, which comprises the following steps: adding disodium ethylene diamine tetraacetate and ferrous chloride into water, and uniformly mixing to obtain EDTA-Fe; the preparation method comprises the following steps: sequentially adding an acetic acid-sodium acetate buffer solution and a biomass material into EDTA-Fe, uniformly mixing, adding aluminum chloride, carrying out a hydrothermal reaction to obtain a primary product, cleaning the primary product, and drying to obtain biomass hydrothermal carbon; the preparation method comprises the following steps: soaking biomass hydrothermal carbon in a saturated solution of potassium carbonate, then carrying out solid-liquid separation, firstly drying a solid obtained by separation, then calcining in a nitrogen atmosphere, and cleaning to obtain the biomass derived porous carbon. The biomass hydrothermal carbon prepared by the method has regular and controllable morphology, abundant surface functional groups and a stable carbon skeleton structure, and shows excellent electrochemical performance.

The invention provides a method for determining boron element in iron ore, which comprises the following steps: weighing 0.2 g of sample, uniformly mixing with a flux, heating to red at 700-800 DEG C, cooling, adding sodium peroxide for secondary melting, dissolving in water, and transferring to a beaker; adding ethanol to boil, fixing the volume to 500mL, filtering and taking 100mL, adjusting the pH value, adding hydrogen peroxide to slightly boil, cooling, adding barium carbonate to boil, diluting and filtering, and taking 25mL for color development determination. According to the method, sodium carbonate and / or potassium carbonate and sodium peroxide are adopted to form a composite flux, an iron ore sample is completely decomposed through secondary melting and step-by-step dissolution, and the sample decomposition efficiency is improved; the method is stable in recovery rate, is superior to a conventional method in precision, can accurately measure the boron content in the iron ore, meets the technical requirements on boron element detection in the fields of ferrous metallurgy, geological exploration and the like, provides an efficient and reliable detection means for boron content analysis, and ensures the accuracy and reproducibility of a detection result.

The application provides an ultra-high performance concrete and a preparation method thereof, and the concrete comprises the following raw materials in parts by weight: cement 260-280 parts, modified quartz sand powder 120-160 parts, modified steel fiber 8-15 parts, fly ash 20-26 parts, polycarboxylic acid water reducing agent 7-12 parts, EVA emulsion 16-24 parts, alkali-resistant glass fiber 4-7 parts, and water 140-180 parts. The preparation method of the modified steel fiber is as follows: the steel fiber is soaked in a potassium hydroxide solution and then dried, the dried steel fiber is added into a calcium hydroxide slurry, potassium carbonate is added for a first stirring reaction, a mixed solution of nano-SiO2 and a coupling agent is further added for a second stirring reaction, filtration and drying are performed, and the modified steel fiber is obtained. The ultra-high performance concrete prepared by the application has scientific proportioning of various raw materials, good toughness, strength and crack resistance, and can effectively improve the service life of the concrete.

The invention discloses a synthesis method of a mono / dibromo pyridine derivative, which comprises the following steps: reacting a pyridine derivative with dimethyl butynedioate and methyl pyruvate at room temperature by using acetonitrile as a solvent to generate a dearomatized heteroaromatic compound; in an oxygen environment, copper bromide is used for brominating the dearomatized heteroaromatic compound to realize dibromination, and if potassium carbonate is additionally added in the reaction, monobromination is realized; and finally, respectively generating mono / dibromopyridine derivatives under hydrochloric acid hydrolysis. A carbon halogen bond of bromopyridine has very high activity, and various reactions such as Suzuki coupling, Sonogashira coupling, Heck reaction, amination reaction and the like can be carried out. On the basis, the polysubstituted bromopyridine can be subjected to selective reaction, and many new ideas can be provided for organic synthesis. The method disclosed by the invention is simple and safe to operate and environment-friendly, the cost is lower by using the copper bromide, and the required reaction conditions are simple.

The invention discloses a carbon enzyme polypeptide water-soluble fertilizer and a preparation method thereof, and the water-soluble fertilizer is prepared from the following raw material components in parts by weight: 160-220 parts of urea crystal, 45-60 parts of polymeric carbon enzyme, 40-60 parts of potassium carbonate, 10-30 parts of polypeptide amino acid, 50-70 parts of pine pollen, 10-40 parts of trace elements, 30-60 parts of charcoal, 60-80 parts of modified ground phosphate rock, 2-6 parts of coenzyme and 30-80 parts of chitosan-humic acid slow-release copper fertilizer. According to the fertilizer synergist disclosed by the invention, the peat soil is added, so that the content of humus is greatly increased, the fertilizer synergist has a very good promoting effect on improving the soil fertility and improving the physical and chemical properties of soil after being applied, and meanwhile, the addition of various beneficial microbial agents can assist plant root systems to absorb the fertilizer, can fully release fertilizer nutrients, and improves the use effect of the fertilizer; therefore, growth of plant roots is promoted, and crop yield is increased.

The application provides a method for synthesizing an eplerenone intermediate N-1 by one-pot method, and belongs to the technical field of organic synthesis. The method is characterized in that: the eplerenone intermediate N-4 is dissolved in dichloromethane, a potassium carbonate aqueous solution and dibromohydantoin are added to perform an opening ring reaction; after the reaction is completed, hydrochloric acid is directly added to perform a rearrangement reaction; then water is separated and methanol is added in the organic layer to perform an ozonation reaction; then sodium sulfite is added to perform a reduction reaction; then hydrochloric acid is added to perform a methyl esterification reaction, so as to obtain the eplerenone intermediate N-1 crude product, and finally the eplerenone intermediate N-1 fine product is obtained through refining. The method realizes the one-pot synthesis of the eplerenone intermediate N-1 from the eplerenone intermediate N-4 through the continuous reactions of opening ring, rearrangement, ozonation, reduction and methyl esterification, and can avoid column chromatography purification, so that the method becomes a green chemical process route with greatly reduced organic solvent consumption and wastewater.

The invention discloses biomass-based ultra-microporous honeycomb porous carbon as well as a preparation method and application thereof, and belongs to the field of environment-friendly adsorption materials. The preparation method comprises the following steps: selecting peanut shells as a carbon source, fully grinding and mixing peanut shell powder and a potassium carbonate solid in an inert atmosphere, putting into a tubular furnace, carrying out segmented heating activation in the inert atmosphere, cooling an activated product, taking out, washing with an acid solution and deionized water in sequence, and drying. The raw material source is stable, the cost is low, agricultural waste recycling is achieved, no extra heteroatom source is needed, and the adsorbent has the cost advantage and efficient adsorption performance and is suitable for carbon dioxide capture.

Provided are a method and a system for producing calcium carbonate, in which a content of alkali in calcium carbonate obtained using a calcium-containing waste can be controlled. There is provided a method (system) for producing calcium carbonate from a calcium-containing waste, including: a calcium dissolution step of adding aqueous hydrochloric acid to a calcium-containing waste and dissolving calcium to produce an aqueous solution containing a calcium ion; a separation step of adjusting a hydrogen ion concentration index of the aqueous solution containing a calcium ion and separating Mg and the like from the aqueous solution; a calcium carbonate preparation step of producing calcium carbonate by adding an aqueous solution containing potassium carbonate and / or sodium carbonate to the calcium ion-containing aqueous solution obtained in the separation step to cause a reaction to occur, in which in the calcium carbonate preparation step, an addition rate of the aqueous solution containing potassium carbonate and / or sodium carbonate is controlled such that κ represented by a specific expression is 3000 or lower.

The invention relates to the technical field of solid waste resource recycling, in particular to a curing agent for waste soil treatment and a preparation method and application thereof. The curing agent for waste soil treatment is prepared from the following raw materials in parts by weight: 30 to 40 parts of carboxyl-terminated hyperbranched polyester, 2 to 4 parts of calcium formate, 25 to 35 parts of polyacrylamide, 7 to 13 parts of hydroxypropyl methyl cellulose, 2 to 4 parts of calcium stearate, 8 to 12 parts of potassium carbonate, 2 to 6 parts of sodium hydroxide, 3 to 5 parts of organic silicon defoaming agent and 8 to 12 parts of organic bentonite. The method has the advantage that the solidification effect of the waste soil with high water content is improved.

The invention discloses an amide chain-bridged bis-tetraphenylethylene fluorescent probe and a synthesis method and application thereof, belonging to the technical field of organic synthesis and analytical chemistry. The fluorescent probe has a structure of an oxalamide-bridged bis-tetraphenylethylene unit and is chemically named 1,2-bis(2-(4-(1-phenyl-2,2-di-dodecylphenyl)vinyl)phenoxyacetyl)ethylenediamine, i.e., Bis-TPE. In the invention, 1,1-di-p-dodecyloxyphenyl-2-phenyl-2-p-hydroxyphenylethylene, 1,2-bis-chloroacetylethylenediamine, and anhydrous potassium carbonate are selected as synthetic raw materials, placed in a dry acetone system for reflux, and after sufficient reaction, the reaction mixture is extracted and distilled under reduced pressure, and the product is separated by silica gel column chromatography, thereby synthesizing the fluorescent probe. The fluorescence intensity of the fluorescent probe of the invention is 1000 nm in Hg 2+ The quenching is obvious in the presence of , and the presence of other ions has little interference with the detection results. The rapid weakening of the fluorescence intensity of the fluorescent probe can be used to detect Hg in the solution. 2+ Highly efficient and selective detection.

This application belongs to the field of ceramic tile technology and specifically discloses a candy dry granule glaze, a candy-effect ceramic tile, and a preparation method. The candy dry granule glaze comprises candy dry granules, and its raw materials, by weight, include: 11-15 parts kaolin, 21-31 parts soda-lime silicate glass powder, 7-13 parts nano-silicon dioxide, 12-18 parts alpha-alumina, 2-5 parts calcium fluoride, 5-13 parts nano-zinc oxide, 2-6 parts borax, 3-5 parts sodium carbonate, 4-6 parts potassium carbonate, 1-3 parts lithium carbonate, and 8-10 parts calcium carbonate; a glaze layer formed on the surface of the ceramic tile by the candy dry granule glaze is obtained to obtain a ceramic tile with a candy effect. The candy dry granule glaze provided in this application takes into account both good transparency and good physical properties, with a more three-dimensional and natural texture and high wear and stain resistance.

The application discloses an organic compound biological probe and a preparation method and application thereof, and belongs to the field of fluorescent probes. The structural formula of the organic compound biological probe is as follows, and the preparation method comprises the following steps: adding 2,4-dihydroxybenzaldehyde and anhydrous potassium carbonate into anhydrous acetonitrile or DMF, then dropwise adding 1,4-dibromobutane to obtain a colorless oily compound 1 through reflux reaction; dissolving the compound 1 and triphenylphosphine in anhydrous acetonitrile to obtain a solid compound 2 through reflux reaction; dissolving 1,1,2-trimethyl-1H-benzo[e]indole and iodoethane in anhydrous acetonitrile to obtain a compound 3 through reflux; dissolving the compound 3 and the compound 2 in anhydrous ethanol, adding piperidine, and then performing reflux reaction and purification to obtain the organic compound biological probe. The organic compound biological probe can self-assemble into nanoparticles with a size of about 1.6 nm in water, has strong anti-photobleaching ability, and integrates red light and near-infrared dual-channel imaging, pH detection, mitochondrion targeting and chemotherapy.

The invention relates to polyethersulfones which can be used as engineering thermoplastics and also as polymers suitable for use in membrane technologies. A method for producing a polyethersulfone includes carrying out a nucleophilic polycondensation between 4,4'dioxydiphenyl sulfone and 4,4'dichlorodiphenyl sulfone in the presence of potassium carbonate in an aprotic solvent environment in two steps of: a) obtaining a dipotassium salt of 4,4'dioxydiphenyl sulfone and b) adding 4,4'dichlorodiphenyl sulfone to the salt obtained in the first step, then holding the resulting mixture while controlling the viscosity thereof to provide a mixture containing a polyethersulfone in a dissolved form in which the mass fraction of the polymer is from 50.5 to 53.3%, isolating the polyethersulfone and drying same. The invention makes it possible to produce a high-molecular-weight polyethersulfone having a controlled set mass-average molecular mass of from 85340 to 104300 g / mol, rendering the polymer suitable for use in the production of finished articles.

The invention discloses a method for preparing a fluorine-containing compound and its application, and relates to the technical field of perovskite material additives. The preparation method is as follows: naphthaleneboric acid, potassium carbonate and bis(triphenylphosphine)palladium chloride are added to a drying container, the container is evacuated to a vacuum state and then filled with nitrogen, phenylacetylene and nine fluoro-4-iodobutane are added to the container, dichloromethane and distilled water are then added to the container, and heated for reaction; the obtained reaction mixture is subjected to extraction and drying, separation and purification, and a fluorine-containing compound is obtained. The fluorine-containing compound prepared by the present invention has good compatibility with the perovskite material, and there will be no heterogeneous phase generation; it is applied as an additive in the perovskite material to suppress the migration and loss of ions, reduce the defect state density at the perovskite grain boundary, extend the carrier lifetime, and improve the charge transfer efficiency; it can also promote the nucleation and growth of perovskite, and improve the quality and morphology of the perovskite film.

The invention discloses sealing cement for a sliding nozzle and a preparation method of the sealing cement. The formula of the sealing cement for the sliding nozzle is composed of 35-45 parts of blast furnace slag powder, 15-25 parts of calcareous quicklime fine powder, 30-40 parts of graded quartz mortar aggregate, 8-12 parts of a pre-activated composite activator, 5-10 parts of a sodium silicate-based rapid hardening adjusting liquid, 0.5-2 parts of plasticized water-retaining fibers and 0.1-0.3 part of an aluminum powder antioxidant. The pre-activated composite exciting agent is formed by blending sodium bentonite and anhydrous potassium carbonate according to a mass ratio of 7: 3 by a dry method; according to the invention, the pre-activated composite activator is cooperated with the modified slag, the daub forms a compact reaction interface in a plastic stage, and the defect of reaction lag of a traditional slag-lime system is overcome; from initial setting and hardening to high-temperature service, the system always keeps dynamic fit with the sliding nozzle: in the initial setting stage, oligomeric silicate rapidly permeates into a slag interface to generate a rigid gel skeleton, so that rapid structure locking is realized, and the waiting time for nozzle installation is greatly shortened.

This invention belongs to the field of glass technology and relates to a high-temperature resistant structural glass material, its preparation method, and its applications. The glass is composed of the following components by mass percentage: 60%-70% silicon dioxide, 5.5%-11% boric acid, 0.1%-5% aluminum hydroxide, 0%-3% potassium nitrate, 5.5%-13% potassium carbonate, 0%-12% sodium carbonate, 0.1%-4% calcium carbonate, 0%-2% calcium fluoride, 0%-1% lithium carbonate, 0%-2% basic magnesium carbonate, 0.1%-1% titanium dioxide, 0%-2% zirconium dioxide, and 0%-1% cerium dioxide; the total mass percentage of potassium nitrate, potassium carbonate, sodium carbonate, and lithium carbonate does not exceed 22%. This structural glass possesses a high softening temperature, a suitable coefficient of thermal expansion, high-temperature resistance, thermal shock resistance, and processing performance, making it suitable as a structural material for optoelectronic devices.