1411 results about "Beaker" patented technology

The invention discloses a double-component fluorosilicone rubber ice-covering-proof coating material and a preparation method thereof. The preparation method comprises the following steps: dissolving fluorine-containing acrylate in solvent, adding a platinum catalyst, uniformly stirring, and pouring into a four-neck flask; starting an electromagnetic stirrer, introducing inert gas, heating in water bath, adding hydrogen-containing silicone oil, and reacting to generate fluorine modified silicone oil; placing vinyl terminated polydimethylsiloxane in a beaker, adding 5-40 parts by mass of white carbon black used as reinforcement filler, evenly stirring, then adding 0.5-5 parts by mass of whitener TiO2, and evenly stirring; weighing 1-5 parts by mass of hydrogen-containing silicone oil and 1-5 parts by mass of fluorine modified silicone oil, placing in the beaker, evenly stirring, adding 10-50mu L of platinum catalyst, and finally adding the solvent; and evenly coating through a spin coater, and curing in a baking oven for 1-4 hours, thus obtaining the double-component fluorosilicone rubber coating. The invention overcomes the defects in the prior art, uses polyorganosiloxane as the raw material, can achieve satisfactory ice-covering-proof effect and is used in the fields of paint and the like.

The invention discloses a measuring method for researching the runoff and sediment production rule of an overland flow and an underground pore fracture flow. An artificial rainfall device, a self-made experimental apparatus, a small plastic barrel, a large plastic barrel with graduations, a sampling bottle, a graduated cylinder and a beaker are provided in the method. The measuring method comprises the following steps of: A, setting and measuring the bare rate of bedrock; B, measuring the underground pore fracture degree; C, determining the raininess; D, collecting a runoff sample and a sediment production sample; E, measuring the runoff volume; F, measuring the sediment yield: measuring suspended sediments and measuring traction loads; G, measuring the loss of soil nutrients; H, measuring the content of sediment nutrients; and I, measuring the content of runoff nutrients. The invention provides the effective method for accelerating to research the soil erosion mechanism in the karst region through researching the runoff and sediment production rule of the overland flow and the underground pore fracture flow in the karst region by combining the self-made experimental apparatus which is capable of adjusting the slope and the pore fracture degree and manually simulating rainfall.

The invention relates to a gas oil base invert oil-emulsion drilling fluid and a preparation method, wherein the total volume of gas oil and calcium chloride aqueous solution is 100 parts: the volume ratio of oil phase to water phase is between 95:5 and 70:30, and the concentration of calcium chloride aqueous solution is 5%-saturation; the required gas oil, primary emulsion, auxiliary emulsion and wetting agent are added into a high speed mixing beaker, and are mixed at high speed for 2-5 minutes; the calcium chloride aqueous solution is added and mixed at high speed for 15 minutes; organic soil, calcium oxide and a fluid loss agent are added and mixed at high speed for 10 minutes; and the required amount of barite is added according to density, and is mixed at high speed for 25 minutes. The gas oil base invert oil-emulsion drilling fluid is used for overcoming the defects of the existing gas oil base drilling fluid and solving the problems of the salt resistance and temperature resistance of the gas oil base drilling fluid, and can resist the temperature above 200 DEG C.

The invention provides a method for synthesizing a silicoaluminophosphate molecular sieve SAPO-11 at normal pressure. The method is characterized in that the main process comprises the following steps of 1) preparation of eutectic mixture: fully grinding and mixing quaternary ammonium salt and organic acid or organic alcohol in a mortar with a mol ratio of 0.1 to 1.0; placing the mixture in a beaker, heating the beaker at a temperature of 80-180 DEG C to melt the mixture into transparent liquid, so as to obtain the eutectic mixture; 2) preparation of crystallization reaction mixture: adding phosphorus source, silicon source, mineralizing agent, template agent and aluminum source into the molten eutectic mixture in sequence, uniformly stirring the mixture at a mixing temperature range from 80 to 150 DEG C to form a reaction mixture; 3) crystallizing the reaction mixture prepared by step 2); and 4) water cooling the reactant reacted in step 3) to a room temperature, washing and separating the mixture, and drying and baking the washed and separated mixture, wherein the washed filtrate is recovered after rotary evaporation.

The invention discloses a method for in-situ full-field early detection of stainless steel pitting. The method comprises the following steps of 1, carrying out packaging of a stainless steel sample and carrying out mechanical polishing of a working face of the stainless steel sample, 2, preparing an experimental soak solution, and 3, putting a beaker containing the experimental soak solution obtained by the step 2 into a constant-temperature water bath, finishing detection temperature setting, putting the stainless steel sample treated by the step 1 into the beaker in a way that the working face of the stainless steel sample is upward, simultaneously, carrying out an in-situ full-field observation process on the surface of the stainless steel sample by a long-distance microscope and a digital camera, wherein when a display shows that blue spots appear on the surface of the stainless steel sample, pitting occurs, and recording the time between putting-in and taking-out of the stainless steel sample. The method can realize rapid in-situ detection of stainless steel pitting. Pitting information which comprises stainless steel pitting positions, stainless steel pitting number, stainless steel pitting areas and stainless steel pitting occurrence time and can be detected by the method has important academic values and practical application values.

The invention discloses a method for preparing two-dimensional silver nanosheets of different shapes. Firstly, a silver mirror reaction is adopted, glucose serves as a reducing agent, a quantitative silver-ammonia solution and the quantitative glucose solution are sequentially added into a beaker to be mixed, then cetyl trimethyl ammonium bromide serves as a surface active agent, the cetyl trimethyl ammonium bromide solution is added into the mixed solution, then high-temperature reaction is carried out on the mixed solution, and a solution of the two-dimensional silver nanosheets of the different shapes is prepared by adjusting the concentration ratio of the cetyl trimethyl ammonium bromide solution and the silver-ammonia solution. The method has the advantages that operation is easy, cost is low, equipment is simple, and the prepared silver nanosheets are uniform in grain size, good in water solubility and free of obvious gathering.

The invention relates to an STF (shear thickening fluid) as well as a preparation method and an application thereof. The preparation method comprises steps as follows: polyethylene glycol and nano silica are weighed respectively, the weighed polyethylene glycol is poured into a beaker, a stirring bar is added, and the beaker is put in a magnetic stirrer; stirring starts, weighed nano silica is added to the beaker in separate times at the room temperature, and stirring is continued after addition; stirring is stopped, the beaker is put in a vacuum drying oven for standing, bubbles in a dispersion system are removed, and the STF is obtained. By means of the STF, shock resistance of body armour fabric to bullets or shrapnels is enhanced; the STF is reversible, so that softness of the material can still be kept after impact property of the bullets or the shrapnels disappears. The provided body armour fabric is high in modulus, low in breaking elongation and high in work of fracture and has strong capacity of absorbing energy of impact.

The invention relates to a method for rapidly measuring the molecular ratio of an acid KF-NaF-AlF3 electrolyte system, which is characterized in that the measuring process comprises the following steps of: firstly, preparing NaF standard solution, measuring the conductivity of the standard solution, drawing a graph by using the conductivity as the horizontal ordinate and using the concentration of the corresponding NaF standard solution as the vertical coordinate, and carrying out linear fitting to obtain a standard curve equation; then weighing 2 to 4 grams of a dried electrolyte sample, adding 1 to 2 grams of NaF, at least grinding for 5 minutes in an agate mortar, sintering for 15 to 50 minutes in a muffle furnace at a temperature of 600 to 700 DEG C, taking out the obtained product, cooling, grinding fine and weighing, then transferring all the obtained product into a beaker, adding 100 to 200 mL of deionized water, stirring on a magnetic stirrer and measuring the conductivity of the solution; and measuring the content of NaF or KF or other components in the electrolyte and then calculating the molecular ratio. The method disclosed by the invention is rapid, simple and convenient. The measurement error of a measurement result is less than plus and minus 2 percent. The method has good reproducibility. The molecular ratio of the KF-NaF-AlF3 electrolyte system can be accurately and rapidly measured.

The invention discloses a method for quickly measuring sulfate radical content in a magnesium method desulfurization process. The method consists of the processes of filtration, constant volume determination, acidification, precipitation and back titration and comprises the following steps of: filtering a fetched sample by using filter paper; filling quantitative filtered clear solution with constant volume into a volumetric flask; filling proper constant volume clear solution in a beaker, and adding diluted hydrochloric acid of 1:1 concentration for acidifying; adding excessive barium chloride into the acidified clear solution to perform precipitation; filtering and fully washing the sediment, and titrating the total weight of barium, calcium and magnesium ions by using ethylene diamine tetraacetic acid (EDTA) coordination agent under the condition that chrome black T is used as an indicator; and meanwhile, calculating the content of the barium ions by measuring the total weight of the calcium and the magnesium so as to calculate the content of the sulfate radicals. The method has the advantages that: the control of solution concentration and measuring process conditions is accurate, the measurement of the content of the calcium and the magnesium is completed at the same time, and the preparation of barium and magnesium mixed solution is not needed; the accuracy of the sulfate radical detection is improved, and the detection time is shortened; and the method is suitable for quickly measuring the sulfate radical content in the debugging and operating process of a magnesium oxide method desulfurization system.

The invention relates to an iron-nickel binary oxide-foam nickel composite electrode material and a preparation method thereof. The composite electrode material is formed by foam nickel and an iron-nickel binary oxide nanosheet layer supported on the surface of the foam nickel fixedly. The preparation method comprises: (1) carrying out pretreatment of foam nickel; (2) preparing foam nickel having a surface loaded with iron ions and nickel ions; and (3) preparing an iron-nickel binary oxide-foam nickel composite electrode material; to be specific, weighing a certain amount of urea and adding the urea into a beaker in the step (2), carrying out stirring and mixing fully and uniformly, moving the mixture into a reaction still, carrying out hydrothermal reaction, carrying out cleaning and impurity removing, and then carrying out drying overnight. The prepared iron-nickel binary oxide-foam nickel composite electrode material serving as a super capacitor electrode material has high conductivity and high electric capacity.

The invention discloses a NiO/MXene composite material as well as a preparation method and application thereof. The composite material takes MXene as a supporting carrier, and NiO particles are uniformly dispersed on the surface of MXene, wherein the mass ratio of NiO to MXene is (2.98-50):50. The preparation method comprises the following =steps: (1) etching a certain amount of MAX material intoa HF acid solution with certain concentration, so as to obtain an MXene material; (2) mixing and stirring a certain amount of nickel salt and the MXene obtained in the step (1) into a beaker while dropwise adding a NaOH solution with certain concentration, stirring for a period of time, then washing, centrifuging, and carrying out vacuum freeze drying; and (3) putting a mixture prepared in the step (2) into a tubular furnace, and calcining in nitrogen atmosphere, so that the target product is obtained. The NiO/MXene composite material is applied to thermal decomposition of ammonium perchlorate(AP) and shows better catalytic effect; meanwhile, preparation technology is simple, and the NiO/MXene composite material has a good application prospect.

The invention relates to a stabilizing restoration method for heavy-metal contaminated soil. The method is characterized in that Ca-Al hydrotalcite like compounds are used as restoring agents. The method comprises the specific steps of firstly, soil collecting: selecting contaminated soil samples, collecting and sending the contaminated soil to a laboratory, and detecting the heavy metal concentration and basic physicochemical properties of the contaminated soil; and secondly, stabilization experiment: weighing the contaminated soil, putting the contaminated soil into a 500ml beaker, adding Ca-Al like soil restoration agents of different mass percentages, adding deionized water of the corresponding volume in accordance with 60% of the soil maximum water-holding capacity, stirring the mixture uniformly, stabilizing the mixture under the natural condition, and taking samples on the second day, the seventh day and the fourteenth day after stabilization for leaching experiments. The stabilizing restoration method for heavy-metal contaminated soil has the advantages of being short in treatment time, wide in application range and low in cost.

The invention belongs to the chemical field, and provides a preparation method for monodispersed and low-biotoxicity gold nanorods, and use for detection of allergen. The preparation method comprises the steps of (1) adding cetyltrimethylammonium bromide (CTMBA) in a beaker, adding HAuCl4 and NaBH4 and stirring; (2) adding a growth solution and an anionic surfactant into the beaker, adding HAuCl4 and ascorbic acid with stirring, adding gold seeds prepared by the step (1), heating in a water bath, cooling, and filtering precipitated CTMAB; (3) taking the gold nanorods prepared by the step (2), adding a PBS solution and a probe DNA and putting in a refrigerator; and (4) taking a certain amount of the modified gold nanorods prepared by the step (3), adding a target DNA, measuring synchronous fluorescence and calculating the content of allergen according to a regression curve. According to the preparation method, the anionic surfactant is used as an additive, so that the usage amount of CTMAB is reduced. The prepared gold nanorods have good monodispersity and low biotoxicity. By using the gold nanorods in the detection of allergen, a detection limit and sensitivity of the method is obviously higher than that of a conventional technology.

The invention discloses a method for purifying a ceramic-metal structural component. The method mainly comprises the following steps of: soaking the component in a beaker filled with acetone; washing ultrasonically at room temperature to remove surface organic pollutants; soaking the component from which oil is removed in 0.5 to 5 percent acid solution, washing ultrasonically and controlling the temperature of the solution to be between 40 and 60 DEG C; washing with water after acid washing; washing ultrasonically in deionized water and controlling the water temperature to be below 40 DEG C; putting the component into absolute ethyl alcohol, washing ultrasonically, dehydrating and drying at the temperature of between 55 and 65 DEG C; and burning hydrogen at the temperature of between 650 and 750 DEG C after drying, wherein hydrogen burning temperature is at least about 100 DEG C lower than the pouring point of a solder in the ceramic-metal structural component, heat is preserved for 10 to 30 minutes and the dew point of hydrogen is lower than 25 DEG C. In the method, a ceramic surface in the ceramic-metal structural component is purified, the insulating performance of the ceramic-metal structural component is improved and adverse effect on a metal part is avoided.

The invention discloses a low-friction-resistance high-temperature-resistant gelled acid and a preparation method thereof. The method comprises the following steps: 2-acrylamide-2-methylpro panesulfonic acid is dissolved into deionized water, and caustic soda flakes are added, so as to enable the pH value of a system to be 8-10; monomer acrylamide, dimethyl diallyl ammonium chloride and long-chain cationic monomer are added, and then deionized water is added again to prepare into an aqueous solution with the mass percent of total monomers of 25-30%; inert gas is fed in, an initiator is added, and reaction is performed, so that a gelling agent is prepared; a beaker is filled with water, and hydrochloric acid, the gelling agent, a corrosion inhibitor WLD-31A, a ferrous stability B-180 and a petroleum deemulsifier AP-221 are added, so that the low-friction-resistance high-temperature-resistant gelled acid is prepared. The preparation method disclosed by the invention is simple, the production cost is reduced greatly, the prepared gelled acid is 45-56% in retardance ratio, 57% in resistance reduction ratio, and excellent in high-temperature resistance; when the gelled acid is cut constantly for 2 h under the temperature of 120 DEG C, the viscosity is maintained about 50 mpa.s, and acid etching crack length can be increased effectively.