7results about How to "Solve insoluble" patented technology

The invention discloses a method for preparing beryllium-copper master alloy by recycling waste beryllium materials, and belongs to the technical field of beryllium-copper alloy, the method comprises the following steps: S1, sequentially carrying out acid pickling, water washing, ultrasonic cleaning, spin-drying and drying on waste beryllium chips and beryllium-copper leftover materials; s2, according to the beryllium content in the beryllium-copper master alloy, weighing the dried beryllium scraps and beryllium-copper leftover materials, and putting the beryllium scraps and the beryllium-copper leftover materials into a cake pressing machine for pressing to obtain columnar materials; and S3, the columnar material is placed in a copper crucible in a vacuum suspension smelting furnace, and water cooling, vacuumizing, argon filling, power regulation and control smelting, staged cooling, vacuum breaking and surface cleaning are sequentially carried out. The beryllium-copper master alloy prepared through the method is stable in beryllium content control and low in impurity content, recycling of beryllium waste and beryllium-copper leftover materials is achieved, and the production cost of the beryllium-copper alloy is reduced.

The invention provides an eleczyme sustained-release dry suspension, which comprises the following components in percentage by mass: 10% to 30% of eleczyme, 30% to 60% of a sustained-release carrier, 10% to 57% of a filler, 1% to 5% of a suspending agent, 1% to 4% of a pH regulator, 0.2% to 1% of a flavoring agent, and 0.2% to 1% of an aromatic flavoring agent; wherein the sustained-release carrier is selected from one or both of stearic acid and glyceryl monostearate; and the suspending agent is selected from one or more of xanthan gum, hydroxypropyl methylcellulose, sodium carboxymethylcellulose, and sodium alginate. The sustained-release dry suspension has good suspension uniformity after adding water, has no precipitation or stratification problems, has good sustained-release performance, and does not have a pungent taste.

The invention provides a method for determining the content of precious metal elements in an automobile purification catalyst, and belongs to the technical field of analysis and detection. According to the method, a composite melting system composed of sodium peroxide, anhydrous sodium metaborate and sodium tungstate is constructed, an automobile purification catalyst sample is subjected to efficient melting decomposition, complete leaching of a melt is achieved in combination with a hydrochloric acid and tartaric acid composite acidification system, a tin-tellurium coprecipitation enrichment technology is introduced on the basis, and the purity of the automobile purification catalyst sample is improved. Trace precious metal elements such as platinum, palladium and rhodium are selectively precipitated and effectively enriched, and matrix interference is remarkably reduced; and then adding an indium internal standard solution and carrying out quantitative determination by adopting inductively coupled plasma emission spectrometry, thereby realizing high-sensitivity and high-accuracy analysis of the noble metal element. The method effectively solves the problems of incomplete sample decomposition, low precious metal recovery rate, serious matrix interference, poor detection result stability and the like in the prior art.

The invention relates to the technical field of coatings, and discloses an antibacterial UV-cured copolyester children water cup coating which is prepared from hexa-functionality and bifunctionality aliphatic polyurethane acrylate, isobornyl acrylate, a photoinitiator, a flatting agent and a ternary coordination antibacterial pre-solution. The preparation method comprises the following steps: dispersing zinc dimethacrylate in acetoacetic acid ethyl methacrylate and ethyl acetate, and dropwise adding hydroxyethyl methylacrylate phosphate under a mild condition to react, so as to obtain the zinc-beta-diketone-phosphate ternary coordination system. An indissolvable zinc salt is converted into an organic compatible form by utilizing a synergistic effect of acidolysis and chelation, so that the haze problem caused by poor dispersion of a zinc source is solved; and meanwhile, the Lewis acid catalysis characteristic of the zinc complex is utilized to initiate Michael addition reaction to deeply consume residual monomers. On the basis of ensuring high light transmittance of the coating and excellent adhesive force to a copolyester base material, high-efficiency antibacterial and low-monomer-residue safety are realized.

The invention relates to the technical field of anticoccidial drugs, in particular to a decoquinate-embedded composite preparation and a preparation method thereof. The decoquinate-embedded composite preparation is prepared from the following raw materials in parts by mass: 15 to 35 parts of decoquinate, 5 to 15 parts of organic carrier, 5 to 10 parts of maltodextrin, 0.01 to 0.1 part of beta-CGTase enzyme preparation, 0.01 to 0.1 part of lanthanum chloride, 1 to 3 parts of branched polylysine, 0.01 to 0.1 part of ammonium persulfate, 1 to 3 parts of sodium trimetaphosphate, 20 to 60 parts of glucose and 1 to 8 parts of surfactant, wherein the enzyme activity of the beta-CGTase enzyme preparation is 3000 to 8000 U / g. After decoquinate is loaded twice, the utilization rate of effective components in the medicine is effectively increased, the medicine stability is extremely high, the anti-coccidiosis effect is better than that of a common preparation, meanwhile, the preparation technology is simple and easy to implement, and large-scale production is easy to achieve.

This invention discloses a water-based cleaning solution comprising: an organic solvent that is poorly soluble in water, a water-soluble co-solvent, a pH adjuster, and water. The organic solvent that is poorly soluble in water is an aromatic hydrocarbon, a halogenated hydrocarbon, or an ester. This cleaning solution, rich in a highly dissolving organic solvent, can rapidly and efficiently remove organic residues and polymers after polishing, while exhibiting excellent stability. Thanks to its unique formulation and efficient cleaning capabilities, the cleaning solution of this invention shows broad application prospects in fields such as semiconductor wafer cleaning.

The present invention discloses a staining solution for exfoliated cells, a preparation method thereof and an application thereof, wherein the staining solution comprises the following components in parts by weight: 10 to 21 parts of a reducing agent, 0.03 to 0.05 parts of folic acid, 0.03 to 0.06 parts of methylene blue, 1 to 3 parts of a solvent, 1.5 to 3 parts of a base, and 75 to 90 parts of water; the pH of the staining solution is 8 to 14. The staining solution in the present invention is an alkaline solution, which has the advantages of not being easily oxidized, good staining effect, long reagent storage time, high detection sensitivity and specificity, etc. In addition, the methylene blue in the staining solution of the present invention has good solubility, solves the problem of methylene blue being difficult to dissolve in the prior art, and can be widely used in special cytological staining of exfoliated cells, such as coarse screening inspection of clinical routine lesions such as cervix, vagina, and vulva.