59results about How to "Uniform purity" patented technology

The invention relates to a chemical method for in-situ large-area controlled synthesis of a perovskite type CH3NH3PBI3 membrane material based on a lead simple-substance membrane. The method comprises: sputtering the lead simple-substance membrane on the surface of a substrate, then horizontally immersing the substrate material possessing the lead simple-substance membrane in an organic solution containing a simple substance iodine and iodinated methylamine, and performing a constant-temperature reaction to prepare a CH3NH3PBI3 membrane material in situ; or putting the substrate possessing the lead simple-substance membrane in a steam atmosphere of a simple substance iodine to perform iodination to generate a lead iodide membrane, then immersing in an organic solution containing iodinated methylamine, and performing a constant-temperature reaction to prepare the CH3NH3PBI3 membrane material in situ. The method is simple in operation, low in energy consumption and low in cost, and has wide industrial application prospect. The obtained CH3NH3PBI3 membrane is high in purity, uniform in membrane-surface crystal and excellent in crystallinity.

A transflective liquid crystal display device including: first and second transparent substrates facing each other with a reflective portion and a transmissive portion; gate and data lines over the first transparent substrate perpendicularly crossing each other and defining pixel regions; a thin film transistor connected to the gate and data lines in the pixel region; an insulator in the thin film transistor on the first substrate covering the gate line; a passivation layer in the reflection portion on the insulator and on the thin film transistor; a pixel electrode in the reflective and transmissive portions, wherein the pixel electrode contacts both the passivation layer in the reflective potion and the insulator in the transmissive portion; a reflector on the pixel electrode in the reflective portion; color filters on a rear surface of the second transparent substrate, the color filters having through holes; column spacers formed between the reflector and the color filters, each column spacer corresponding in position to each through hole; a common electrode under the color filters; and a liquid crystal layer interposed between the common electrode and the pixel electrode.

The present invention relates to a method for producing europium activated yttrium gadolinium borate phosphors and a product produced by the method. The chemical formula of said phosphors is (Y_1-x-y-zEu_xGd_yM_z)BO₃, wherein: 0.01≦x≦0.01, 0≦y≦0.5, M=Ca, Sr, Ba or Mg, 0≦z≦0.1. The method comprises: mixing a yttrium source, an europium source, a gadolinium source, a boron source and an M source to produce an aqueous solution in a microwave system; placing the aqueous solution into a microwave system, and making the solution reacting under the condition of condensation cycling and stirring to produce a sol; heating the sol in a microwave system to produce a gel; drying, baking, washing and collecting the gel to produce the product. The method of the present invention can greatly short the production period and improve the production efficiency. The europium activated yttrium gadolinium borate phosphor particles is of a particle size as fine as 80 nm and has good uniformity and emitting performance.

The invention relates to hollow heat-retaining putty which is prepared by the following steps: mineral fiber, heat-response powder and base material gluing auxiliary powder are evenly mixed with a weight proportion of 1.0-2.0:0.2-0.8:89.5-137.3 to prepare the putty, ant the putty is weighted and packaged by bags. The putty overcomes the defects that the prior product has large blocking force, is easy to sag and can not ensure the blow thickness of a coat when being used in construction, the grains of the product are easy to smash when being stirred and blown, and the adhesive force is unsteady. The invention has fire resistance, heat insulation, heat preservation, sound insulation, crack resistance and yellowing resistance, steady structure, long quality guarantee period and low cost, thereby being particularly suitable for the actual need of energy saving in construction engineering.

A method of preparing fucoidan having an efficiently customized molecular weight and applications of the fucoidan are disclosed. The method includes subjecting kelp fucoidan that is adopted as a raw material to microwave dissolution and ultrasonic degradation to obtain a fucoidan degraded solution; grading the fucoidan degraded solution by utilizing high-flow-speed agarose gel chromatography; collecting a solution of low-molecular-weight fucoidan having the target molecular weight; subjecting the solution of fucoidan having other molecular weights to ultrasonic degradation again, performing grading by utilizing the high-flow-speed agarose gel chromatography, and collecting a solution of low-molecular-weight fucoidan having the target molecular weight; combining all target fucoidan solutions; filtering the obtained target fucoidan solution by utilizing a nanofiltration membrane; subjecting a filtration product to desalting and concentration; diluting the fucoidan concentrate again; then subjecting the diluted fucoidan concentrate to nanofiltration, concentration and desalting again; precipitating the fucoidan with an ethanol solution, and washing and drying the fucoidan to obtain a fucoidan product having the low molecular weight. The method keeps active components of the fucoidan to the utmost. The purity of a target product that is a fucoidan product having high purity and a uniform low molecular weight is as high as 95% or above.

The invention discloses an anode for cylindrical jet-state direct electrodeposition devices, which comprises an anode tube, an upper coaxial positioning column and a lower coaxial positioning column, wherein the anode tube is a hollow cylinder, jet holes are uniformly distributed on the outer edge surface of the anode tube, and the lower coaxial positioning column is a hollow tube; one end of the anode tube is connected with the upper coaxial positioning column, and the other end of the anode tube is connected with the lower coaxial positioning column; the anode tube, the upper coaxial positioning column and the lower coaxial positioning column are coaxially arranged, and an inner-cylinder cavity of the anode tube is communicated with a hollow tube in the lower coaxial positioning column. The invention relates to one of core components of a cylindrical jet-state electrodeposition device, and the cylindrical jet-state electrodeposition device disclosed by the invention can effectively overcome the concentration polarization of a cathode surface, so that metal ions are successfully reduced and deposited on the cathode surface of a cathode. Therefore, compared with metal raw materials produced in previous modes, a metal raw material produced by the anode is more uniform in purity and better in surface effect.

The invention provides a high-purity aluminum continuous purifying device which purifies molten aluminum by utilizing a hydrocyclone structure consisting of a crucible, a crucible cover and a crystallizer. On the one hand, due to normal segregation, pure aluminum crystals are obtained on a solid-liquid interface in the crystallizer and impurities are diffused to molten aluminum from the solid-liquid interface, so that density of adjacent molten aluminum is enlarged due to increase of content of the impurities, and on the other hand, due to gravity segregation under the centrifugal effect, the molten aluminum with high content of the impurities is centrifugalized to the crucible wall and gradually moves to a bottom flow port, and the molten aluminum with low content of the impurities is extruded to the solid-liquid interface due to small density. Under the effect of normal segregation and gravity segregation, the purifying efficiency is greatly improved. The device provided by the invention can produce continuously, is energy-saving and efficient, simple in structure and safe and reliable, and can be combined to use through various modes.

An object of the invention is to acquire uniform color purity within a pixel to make a good color reproduction and to easily manufacture it with few constraints. A color filter for coloring a first light ray L1 having a unidirectional optical path and a second light ray L2 having a bidirectional optical path for each pixel (10). The color filter comprises: a first coloring portion 10t for coloring the first light ray L1 and a second coloring portion L2 for coloring the second light ray L2, the first coloring portion 10t having a greater thickness than the second coloring portion 10r, the first coloring portion 10t being formed in subsidence with respect to the second coloring portion 10r with a principal plane of the first coloring portion 10t being different in height from a principal plane of the second coloring portion 10r by a predetermined value D.

The invention relates to a separating and purifying method for preparing white muscardine silkworm anticancer-activity polysaccharide BBPW-1, which comprises the following steps: degreasing white muscardine silkworm powder under reflux of acetone-petroleum ether and 80% ethanol to remove glycosides and alkaloids, and extracting with distilled water at 80-100 DEG C to obtain crude polysaccharide; and after removing proteins from the crude polysaccharide by a Sevag process, separating out the neutral polysaccharide component by DEAE (diethylaminoethanol) sepharose ion-exchange chromatography, carrying out propylene dextrangel S-300 chromatography, taking the first eluting peak, concentrating under reduced pressure, carrying out propylene dextrangel S-500 chromatography for further purification, and carrying out freeze-drying to obtain the white muscardine silkworm anticancer-activity polysaccharide BBPW-1. The product prepared by the method provided by the invention has uniform purity, and the molecular weight is 3.67*10<6>Da; and the product has an inhibiting action on growth of human cervical cancer cells Hela and human liver cancer cells HepG2, does not have any adverse effect on growth of normal human embryo kidney cells HEK293 and mouse macrophages RAW264.7, and can be used for developing anticancer products.

The invention discloses a sulfur purification system and a sulfur purification process, and belongs to the technical field of sulfur purification. Liquid crude sulfur melted by the sulfur melting kettle is discharged into the stirring tank and pumped by the liquid sulfur pump to be conveyed to the separation device, the crude sulfur after solid impurities are separated enters the decomposition tank to be heated, liquid sulfur discharged from the decomposition tank enters the outside of a pipe of the gas-liquid heat exchanger to exchange heat with gaseous sulfur in the pipe, and the liquid sulfur is discharged out of the gas-liquid heat exchanger to enter the heater; liquid sulfur in the heater is heated to the boiling point temperature to be gasified, gaseous sulfur enters a pipe of a gas-liquid heat exchanger from the heater and exchanges heat with liquid sulfur outside the pipe, and gas-liquid mixed sulfur after gas-liquid heat exchanger enters a pipe of a cooler and exchanges heat with a medium outside the pipe; and the sulfur discharged from the cooler is in a liquid state and enters a slicing machine through a separator to prepare refined sulfur slices. The method not only has better safety, but also is high in efficiency, and the adopted purification process is simple.

A transflective LCD device includes first and second transparent substrates spaced apart from each other and having a reflective portion and a transmissive portion, an insulator on the first transparent substrate, a passivation layer on the insulator within the reflective portion, a reflector on the passivation layer, a transparent pixel electrode disposed over the insulator covering the reflector and the passivation layer, a buffer pattern disposed on a rear surface of the second substrate, the buffer pattern having a saw-tooth shape corresponding to the reflective portion, a color filter on the rear surface of the second substrate covering the buffer pattern, the color filter having a first thickness in the transmissive portion and a second thickness in the reflective portion, a transparent common electrode on a rear surface of the color filter, and a liquid crystal layer between the transparent pixel electrode and the transparent common electrode.

The invention discloses a method for preparing high-purity lithium fluoride, comprising the following steps of 1) sufficiently mixing lithium carbonate powder and hydrochloric acid for reaction to obtain a lithium chloride solution with the pH value of 6 to 7; 2) adding excessive hydrofluoric acid solutin into the lithium chloride solution obtained in the step 1) for sufficient mixing, and reacting to obtain a mixed solution containing lithium fluoride precipitate; 3) standing the mixed solution obtained in the step 2) and filtering to obtain a lithium fluoride wet solid and hydrochloric acidmother liquor; 4) washing and performing vacuum drying on the lithium fluoride wet solid obtained in the step 3) to obtain the high-purity lithium fluoride solid. According to the method provided by the invention, cheap and available hydrochloric acid is taken as an intermediate raw material for preparing lithium fluoride, lithium chloride with good water solubility is firstly prepared using hydrochloric acid and lithium carbonate, then lithium chloride is reacted with hydrogen fluoride to obtain lithium fluoride and the hydrochloric acid mother liquor, and the hydrochloric acid solution withlithium fluoride separated out is recycled to be reacted with lithium carbonate; the method has the advantages that the raw material cost is low, the process is simple, and the product conversion rateis high.

The invention discloses a stokehole production process of an electrician round aluminum rod, and relates to the field of electrician round aluminum rod production. The stokehole production process comprises the following steps that a raw material and a returned material are added into a smelting furnace; a refining agent is sprayed into molten aluminum by using high-purity argon to carry out primary refining treatment; an intermediate alloy raw material is added into the smelting furnace, and stirring is carried out for 20-40 minutes; the refining agent is sprayed into an alloy solution by using the high-purity argon for secondary refining treatment; and the refining agent is sprayed into the alloy solution subjected to standing by using the high-purity argon for tertiary refining treatment, and if the alloy solution reaches the production standard, the alloy solution flows into a launder and then stands for standby application. According to the stokehole production process of the electrician round aluminum rod, the permanent magnet stirring time is prolonged to be combined with manual stirring, the refining temperature is strictly controlled, the refining frequency is increased, so that the uniformity and stability of molten aluminum components are ensured; and the molten aluminum temperature in the whole launder is monitored in real time by additionally arranging a launder heating cover plate, so that the molten aluminum temperature stability is ensured, then the uniformity of the casting temperature is ensured, and components and tissues of a cast ingot are kept uniformas much as possible.

The invention discloses an extraction method of a hericium erinaceus anti-allergic active polysaccharide. According to the extraction method, the hericium erinaceus anti-allergic active polysaccharideis obtained by adopting a technology comprising hot water extraction and DEAE (Diethyl Aminoethanol) Sepharose Fast Flow ion exchange chromatography purification. After the hericium erinaceus anti-allergic active polysaccharide obtained by the extraction method is subjected to high performance gel permeation chromatography detection, the hericium erinaceus anti-allergic active polysaccharide hasa single symmetrical peak and uniform purity; the molecular weight calculated relative to a standard curve is 10kDa; the hericium erinaceus anti-allergic active polysaccharide has an obvious inhibition effect on hyaluronidase and has anti-allergic activity.

The invention relates to a preparing method of a moxibustion patch with a graphene skeleton. The method particularly includes the steps that carbon fibers serve as raw materials, and through three stages of preliminary oxidation, concentrated-sulfuric-acid and potassium-permanganate oxidation and hydrogen-peroxide final oxidation and the like, fully oxidized graphite oxide is obtained; then, through a strong reductant vitamin C, the harmless graphene skeleton with a healthcare effect is obtained; finally, the moxibustion patch is obtained by filling the graphene skeleton with quick lime and aged argy-wormwood-leaf dust, wherein heat is generated when the quick lime makes contact with water, and the aged argy-wormwood-leaf dust which is stocked for 3-5 years has the optimal thermal moxibustion effect. The moxibustion patch with the graphene skeleton is good in skin affinity, convenient to use, long in duration, significant in effect and capable of being recycled.