79results about How to "Stable and controllable process" patented technology

The invention relates to an atmospheric plasma chemical processing method of WC and SiC optical molding molds, which belongs to the atmospheric plasma chemical processing methods of the optical molding molds. The atmospheric plasma chemical processing method can solve the problems that the grinding and polishing technology which is used for processing after processing and forming of the optical molding molds made of SiC and WC materials has the disadvantages of low processing efficiency, poor surface quality, damage of a sub-surface layer and short service life of the molds. The method comprises the steps of: introducing a mixture of plasma gas, reaction gas and oxygen into space between a cathode and an anode of a plasma generator, imposing radio frequency power signals on the cathode andthe anode, producing the plasma discharge between the two electrodes, then placing the surface to be processed of the WC or SiC optical molding mold in a plasma jet region for carrying out chemical reaction and realizing the optical surface processing of the optical molding molds made of the SiC and WC materials. The method is used for carrying out the optical processing on the surfaces of the WCand SiC optical molding molds.

The invention relates to a slow release pellet of high-stability type cysteamine hydrochloride and a preparation method thereof. The slow release pellet comprises the following components in portionsby weight: 30-70 portions of cysteamine hydrochloride, 20-40 portions of silicon dioxide and 5-25 portions of polymer material as coating wall material. The preparation method comprises the followingsteps: firstly, using silicon dioxide pellets to absorb liquid cysteamine hydrochloride in proportion to form cysteamine hydrochloride particles; then, using the coating wall material to encapsulate the cysteamine hydrochloride particles to form a membrane cavity control structure; and drying the structure to obtain slow release pellets of 50% cysteamine hydrochloride. The slow release pellet hasthe characteristics of stable product quality, high content, reasonable preparation method, easy batch production and simple using method and can be added into the premix.

The invention provides a composite powder and a preparing method thereof and belongs to the field of material engineering. The composite powder is prepared with the method which includes the following steps that metal or alloy is smelted to obtain metal liquid or alloy liquid; in the time of smelting, the degree of superheat is controlled between 50 DEG C and 200 DEG C and the metal liquid or the alloy liquid naturally flows downwards; meanwhile, blended gases are used for spraying and atomizing the metal liquid or the alloy liquid and the composite powder is obtained after cooling is carried out. The inner core and the shell of the powder obtained in the method can form metallurgical bonding, coverage is compact, bonding force is strong, texture is compact and the degree of sphericity is high. As no chemical agents do not need to be used in preparing, the environment will not be polluted; in addition, in the time of preparing, the thickness of the shell of an oxide can be controlled by controlling the oxygen concentration in the blended gases, the thickness is controllable, the technological process is stable and controllable and processing in a batched mode can be carried out with high efficiency.

The invention provides a purification method for triptorelin, which comprises the following steps: firstly, dissolving a sample by using an aqueous solution containing organic solvents, and carrying out gradient elution on the sample by taking octadecylsilane chemically bonded silica as a stationary phase, taking buffer salts of a phosphoric acid or sulfuric acid as a phase A, and taking acetonitrile as a phase B; then, converting triptorelin phosphates into acetates by using a reversed-phase HPLC (high performance liquid chromatography) method and taking octadecylsilane chemically bonded silica as a stationary phase, and freeze-drying the obtained acetates, so that triptorelin acetates with a purity of more than 99.7% and an individual impurity of less than 99.7% of are obtained, and the total yield is as high as over 30%. The invention provides a triptorelin purification process which is low in cost, high in yield, simple in technological process, less in sample impurities, stable and controllable, and beneficial to the implementation of industrialization.

The invention relates to a refining method and a synthesis method of esomeprazole. The refining method comprises the following steps: firstly, suspending a crude esomeprazole product in 2-5 times of good organic solvents, stirring at low temperature, filtering to remove the impurities, slowly adding 10-20 times of adverse organic solvents, stirring to crystallize over night, and centrifuging to dry, thereby obtaining a refined esomeprazole product. The refining method of the esomeprazole is stable and controllable in process, simple and convenient to operate and easy to industrialize; the prepared esomeprazole is hihg in purity, high in yield, high in optical purity and stable in component, and happening of adverse reaction accidents is greatly avoided.

The invention relates to a composite material with a Si-Y-C ternary ceramic matrix and a preparation method, a silicon-yttrium alloy is introduced into the ceramic matrix composite material by utilizing a reaction melt permeation method, and the composite material containing the Si-Y-C ternary ceramic matrix is prepared. According to the method, the mass fraction of the introduced rare earth compound is increased, and continuous permeation and uniform distribution are achieved. The preparation temperature is relatively low, so that the performance of the original reinforcements such as fibersor whiskers can be fully exerted. On the premise of ensuring the mechanical properties of the composite material, the water and oxygen corrosion resistance is enhanced by 100-200%, and the thermal shock resistance is enhanced by 100-150%. Moreover, the method is simple and controllable in process, low in equipment requirement and beneficial to large-scale production.

The invention discloses a method for preparing a super-hydrophobic metal coating for engineering, which belongs to the field of surface hydrophobic material preparation, and comprises the following steps: (1) preparing a plating solution: dissolving a certain amount of citrate in water as a complexing agent, fully After stirring, add a certain amount of nickel salt and copper salt in turn, and add an appropriate amount of glycine and tungstate, and finally adjust the pH value with sulfuric acid and ammonia water to control it within the range of 4 to 10 to obtain the plating solution; (2) Preparation of the coating : the above plating solution is placed in the electrolytic tank, and the metal workpiece commonly used in engineering is used as the cathode after cleaning, rust removal and drying, and the nickel sheet is used as the anode, and the electroplating layer is obtained by direct current electrodeposition or pulse electrodeposition. The superhydrophobic metal coating in the present invention not only has superhydrophobic properties, but also has excellent corrosion resistance, and can be effectively used in the field of engineering anticorrosion.

The invention provides a purifying method of carperitide. The purifying method comprises the following steps of: 1) dissolving a sample through 3 to 18% of an aqueous solution of an organic solvent based on volume by volume concentration, wherein the organic solvent has high polarity; preparing to obtain 100g/L of solution based on concentration; 2), getting octadecylsilane bonded silica gel as a stationary phase, getting 10 to 50mmol/L of sulfuric acid buffer salt in which 0.1 to 0.8% of perchloric acid is added based on a volume ratio as phase A, and getting acetonitrile as phase B, wherein volume ratio concentration of the phase B is 17 to 37%; feeding a solution prepared in step 1) to carry out gradient elution; and 3) transferring the carperitide sulfate into hydrochloride; carrying out a reverse phase HPLC (High Performance Liquid Chromatography) method; getting the octadecylsilane bonded silica gel as the stationary phase; carrying out the gradient elution; and drying to obtain the carperitide in a freezing way. The purifying method of the carperitide provided by the invention is stable and controllable in technology, high in yield, high in purity, wide in practical value and wide in application prospect.

A process for coating on the surface of VC particle by high-molecular non-solvent temp-varying phase separation method includes separating the liquid phase of high-molecular material as wass material from continuous phase, coating in on the surface of VC particle to become microsphere, and vacuum drying. Its advantages are high coating uniformity, slow release, and high VC activity.

The invention discloses a preparing method and application of a CuSbS2 nanoparticle. The particle is an agglomerate with a regular square rod-shaped structure. The preparing method comprises the stepsthat copper salt, antimonic salt and a sulfocompound are dissolved in a solvent, and then a precursor solution is prepared after the materials are fully dissolved; a microwave method is adopted for preparing the CuSbS2 nanoparticle; a Na2S solution is added into the obtained CuSbS2 nanoparticle for removing impurity phases. According to the CuSbS2 nanoparticle and the preparing method and application thereof, by regulating preparing technologies and parameters, the purpose of regulating the crystal appearance is achieved, then the ideal crystal surface appearance is prepared, the photocatalytic performance of the CuSbS2 nanoparticle is improved, and the CuSbS2 nanoparticle can increase the degradation rate of rhodamine B under 7 hours of illumination by an xenon lamp of 500 W to 96% from19%.

The invention provides a flotation method for copper-molybdenum sulfide ore. The method comprises the following steps: carrying out crushing, ore grinding and desliming pretreatment on raw copper-molybdenum ore to prepare copper-molybdenum ore pulp with a concentration of 30-40%; adding the copper-molybdenum ore pulp into a flotation device, adding a collecting agent kerosene and a foaming agent terpenic oil under the condition of a preset pH value, and carrying out a bulk flotation process of sequentially returning middlings through first roughing, second concentration and second scavenging to obtain copper-molybdenum bulk concentrate; and finally preparing mixed ore pulp with a concentration of 25-35% from the copper-molybdenum bulk concentrate, adjusting to a preset pH value and a preset external control potential, adding a copper inhibitor and/or a collecting agent kerosene, and carrying out a flotation process of sequentially returning middlings through first roughing, fourth concentration and second scavenging, and separating to obtain copper concentrate and molybdenum concentrate. According to the method, the copper-molybdenum separation flotation process is carried out by combining an external control potential flotation mode with a copper inhibitor, so that the process is stable and controllable, the recovery rate of copper-molybdenum resources in raw ore is high, andthe copper-molybdenum separation effect is remarkable.

The invention discloses a Ti-Al-Nb-based composite material and a preparation method thereof, the material comprises a Ti-Al-Nb alloy matrix and 1.5%-10% by volume of TiB whiskers, the matrix comprises 18-25 at% of Al, 12-27 at% of Nb and the balance Ti, the structure form of the matrix is that a needle-shaped O phase is distributed in a deformed non-equiaxial B2 phase matrix, and the average value of the ratio of the long axis to the short axis of B2 crystal grains is larger than or equal to 1.5; the TiB crystal whiskers are distributed at the B2 phase crystal boundary in a complete and unbroken form, are connected with B2 crystal grains on the two sides in a pin type structure, and pin the B2 phase crystal boundary. The matrix alloy of the composite material is deformed and has streamline characteristics; the reinforcement TiB whisker is complete, free of fracture and uniform in distribution; the TiB crystal whiskers with the high length-diameter ratio effectively pin a deformation matrix grain boundary, so that the grain boundary pinning strengthening effect and the intragranular deformation strengthening effect have a synergistic effect, and the thermal strength performance of the material is greatly improved.

The invention relates to an allergy-relieving mask containing rose fermentation liquor and a preparation method of the allergy-relieving mask containing rose fermentation liquor. The allergy-relievingmask is prepared from the following raw material components in parts by weight of 40-60 parts of the rose fermentation liquor, 0.1-2 part of allantoin, 1-3 parts of sodium polyglutamate, 0.1-3 part of bambusa vulgaris leaf extracts, 1-3 parts of melissa officinalis leaf extracts, 0.5-5 part of panthenol, 2-10 parts of butanediol, 0.1-1 part of sodium polyacrylate and 33-36 parts of water. The allergy-relieving mask has the remarkable effects of relieving allergy, calming the skin, improving the skin barrier function, whitening the skin, supplementing water and preserving moisture; and besides, the added rose fermentation liquor has the effect of postbiotics, skin stability can be promoted, and the skin is in a healthy state.

The invention provides a preparation method of amorphous ticagrelor. Amorphous ticagrelor is separated out from a solvent for the first time. The process is stable and controllable, and the amorphous ticagrelor prepared by using the method is good in stability.

The invention provides a daochi powder formula granule. The daochi powder formula granule consists of co-decoction extracts of dried rehamnnia root, raw liquorice, caulis akebiae and bamboo leaves. The invention further provides a preparation method, a use and a detection method of the daochi powder formula granule. The daochi powder formula granule disclosed by the invention keeps all characteristics of the daochi powder, has active ingredients, nature and flavor, channel tropism, major functions and effect which are consistent with those of conventional daochi powder, and also has a plurality of advantages of less dosage, quick effect, complete components, accurate curative effect and the like, does not need decoction, can be directly taken, and is safe and sanitary and convenient to carry and store. The preparation method of the daochi powder formula granule is simple, low in cost and suitable for industrial production. The identification method adopted by the detection method of the daochi powder formula granule has strong specificity, high content measurement accuracy, good repeatability, and the detection method can be used for effectively controlling the quality of the product during a product production process, so that the clinical effect and the safety of the daochi powder formula granule are ensured.

The invention discloses an ultra-low-carbon bake hardening steel sheet and a production method thereof. The steel sheet comprises following chemical components in percentage by mass: 0.002%-0.003% ofC, smaller than or equal to 0.03% of Si, 0.35%-0.45% of Mn, 0.045%-0.060% of P, smaller than or equal to 0.008% of S, 0.025%-0.055% of Als, 0.008%-0.015% of Nb, 0.0005%-0.0015% of B, smaller than or equal to 0.004% of N, 0.0008%-0.0015% of solid solution C and the balance of Fe and inevitable impurity elements. The production method comprises processes as follows: steelmaking, continuous casting,slab heating, hot rolling, laminar cooling, acid rolling, continuous annealing and leveling. The ultra-low-carbon bake hardening steel sheet is obtained by adopting ultra-low-carbon component design and P and Mn solution strengthening and adding Nb for fixing part of C on the basis of matching of corresponding hot rolling, acid rolling and continuous annealing processes.

The invention relates to moisturizing shower gel containing rose fermentation liquor and a preparation method of the moisturizing shower gel. The shower gel is prepared from the following raw materialcomponents: 10-20 parts by weight of rose fermentation liquor, 1-3 parts by weight of a cardiospermum halicacabum extract, 1-3 parts by weight of a musa basjoo fruit extract, 1-3 parts by weight of acistus incanus flower extract, 10-15 parts by weight of sodium cocoyl alaninate, 3-5 parts of cocamidopropyl betaine, 0.5-2 parts of sodium cocoyl apple amino acid, 2-5 parts of decyl glucoside, 0.5-1.5 parts of PEG-120 methyl glucose dioleate, 5-8 parts of acrylic acid (acrylate) copolymer, 0.5-1 part of glycolipid and 41-58 parts of water. The shower gel disclosed by the invention is high in cleaning power and mild and non-irritant to use while moisturizing, and meanwhile, the added rose fermentation broth has a retrogradation effect and can soothe and stabilize the skin.

The invention relates to the technical field of agriculture and forestry biological resource utilization, in particular to bamboo-sourced cellulose acetate and a preparation method thereof. The preparation method comprises the following steps: mixing a raw material containing bamboo cellulose with an organic solvent and an activating agent for primary reaction to prepare a reaction product; mixing the reaction product with an acetylation reagent and a catalyst for secondary reaction to generate cellulose acetate; and carrying out solid-liquid separation after the secondary reaction, and mixing the separated liquid with a precipitating agent to prepare the cellulose acetate. According to the method, the substance containing the bamboo cellulose is taken as the raw material, and the bamboo cellulose can be efficiently converted into cellulose acetate for further utilization through simple two-step reaction, so that the economic benefit of the bamboo cellulose is improved.