294results about How to "Easy to expand production" patented technology

The invention provides a preparation method of a monodisperse porous inorganic microsphere. Functionalized porous polymer microspheres are used as templates; the hydrolysis condensation reaction of an inorganic precursor is controlled to perform in the pores of the microspheres so as to prepare polymer / inorganic substance composite microspheres; and the templates are removed to obtain porous inorganic microspheres. The porous inorganic microspheres provided by the invention has the same size as the templates with no size reduction phenomenon, and the yield is up to above 98%; the inorganic microspheres have stable chemical properties and high mechanical strength, and have potential application value to the fields of chromatography, bioseparation, wastewater treatment, catalyst carrier, immobilized enzyme, etc.

The invention relates to a method for preparing white carbon black by taking rick hull ash as a raw material, comprising the following steps of: (a) dissolving and boiling the rice hull ash processed by a sieve with 40 meshes and an NaOH (sodium hydroxide) solution of 1.5-3.5mol / L at a temperature of 90-110 DEG C for 1 hour to 6 hours, wherein the ratio of the rice hull ash to the NaOH solution is 1g:(8-10) mL, cooling and filtering; (b) mixing a filter liquid, 95% ethanol and a surfactant in terms of the ratio of the filter liquid to the 95% ethanol to the surfactant being 1:(8-10):(0.1-0.3), regulating the temperature of a mixture to be 35-45 DEG C, and adding an ammonium chloride solution into the mixture in terms of the mass ratio of the mixture to the ammonium chloride solution with the mass concentration of 20-30% being 1:(0.1-0.3) under a state of stirring; (c) washing a turbid material, suction-filtering, ageing by using a proper amount of the ethanol with the mass fraction of 95% for 2 hours to 5 hours, standing, filtering, and washing and filtering by using the 95% ethanol to obtain a filter cake; and (d) stoving the filter cake, placing in a muffle furnace for roasting at a temperature of 450-600 DEG C for 1 hour to 6 hours to obtain white granular silicon dioxide, and grinding the white granular silicon dioxide to obtain the globular white carbon black. The method has the advantages of low production cost and simple operation, and is easy to control the condition and expand the production.

The invention discloses washable touch screen temporary protection ink as well as a preparation method and application thereof. The washable touch screen temporary protection ink consists of the following raw materials by weight percent: 0 to 50 percent of polyacrylic acid resin solution, 5 to 90 percent of water-based paint resin, 5 to 50 percent of water-soluble macromolecule solution, 0 to 70 percent of polyacrylate emulsion, 1 to 10 percent of packing, 0.1 to 2 percent of pigment and 2 to 5 percent of functional additive, wherein the polyacrylic acid resin solution and the polyacrylate emulsion are not simultaneously equal to 0. When in preparation, a polyacrylic acid solution, the polyacrylate emulsion, a water-based leveling agent and packing are placed into a dispersion machine and uniformly mixed, and then the other components are placed into the dispersion machine to be uniformly mixed to obtain the washable touch screen temporary protection ink. The ink can protect touch screen cover plate glass or an ITO glass surface layer film against damage during a construction process at a high temperature of 200 DEG C; moreover, after the ink is used at 200 DEG C, the ink can fall off in block shapes in 30s to 2min after being soaked in water with the temperature of 50 DEG C.

The invention relates to a preparation method of a proton exchange membrane fuel cell carbon-supported metal electrocatalyst. The active component of the electrocatalyst is Pt-Ag-Co, an atom ratio of Pt:Ag:Co is 20:1:0.01-1:20:0.01, and the mass percentage content of the active component is 10-50%. The preparation method comprises the following steps: 1, dissolving processed carbon powder in an alcohol solvent, carrying out ultrasonic treatment to obtain a uniform slurry, adding an Ag and Co precursor solution to the slurry, and mixing; 2, reducing a mixed solution obtained in step 1 by sodium borohydride for 10-24h, washing, and drying to obtain Ag-Co / C; 3, dissolving the Ag-Co / C by alcohol, and carrying out ultrasonic treatment to obtain a slurry; and 4, processing a Pt precursor through an in situ chemical reduction homogeneous precipitation process to prepare complexing ions, processing to prepare a colloid, and carrying out reduction deposition on the colloid in the slurry obtained in step 3 by using a reducing agent formaldehyde in order to prepare the Pt-Ag-Co / C catalyst. The method has the advantages of simple process, low cost and easy enlarged production, and the catalyst has good catalysis activity, and has better durability than commercial Pt / C electrocatalysts and binary Pt-Ag / C electrocatalysts.

The invention relates to a bio-based flame-retardant curing agent for epoxy resin as well as a preparation method and application thereof. The flame-retardant curing agent is prepared by reacting phytic acid and poly-amino compounds in one step, and has the effects of a flame retardant and a curing agent. When the bio-based flame-retardant curing agent is used for the epoxy resin, excellent thermal properties and insulating property of the epoxy resin are maintained, and the curing agent has excellent flame-retardant property. The bio-based flame-retardant curing agent is wide in application,and is particularly applied to the field of electronics and electrical appliances.

The embodiment of the invention discloses an Au-Pd alloy electroplating solution which comprises an Au salt, a Pd salt, a chelating agent and conducting salts. The Au-Pd alloy electroplating solution comprises the following components: 0.1-20g / l of Au salt based on the content of a single substance Au, 0.1-15 g / L of Pd salt based on the content of a single substance Pd, 30-300 g / L of chelating agent and10-30 g / L of conducting salt, wherein based on the content of metal substance, the mass ratio of gold salt to palladium salt is (0.5-20):1. In addition, the invention also discloses the preparation method and the electroplating process of the Au-Pd alloy electroplating solution. By using the Au-Pd alloy electroplating solution and electroplating process thereof, the process is simple, and an obtained Au-Pd alloy electroplating layer has the advantages of high electrical conductivity, strong wear resistance and corrosion resistance, metal white or light golden yellow appearance, and the like.

The invention discloses a method for using biomass porous carbon as a potassium ion battery cathode. Firstly, a biomass precursor is evenly mixed with specific salt, a pollution-free molten salt carbonization method is adopted to prepare a three-dimensional classification porous carbon material, a carbonization temperature and a ratio of the specific salt to a biomass raw material in a reaction process are regulated and controlled to obtain the porous carbon material, and the porous carbon material is used as the potassium ion battery cathode. The porous carbon cathode material is prepared bya molten salt carbonization method which comprises the following steps that: 1) cleaning and smashing the biomass raw material into precursor powder; 2) carrying out ball milling and mixing on the precursor and the specific salt particles; and 3) after a product in 2) is coated with salt powder, rising the temperature to 500-1200DEG C at a rate of 1-10DEG C / min under air, keeping the temperature for 3-6h, and washing, separating and purifying the generated product to obtain a target product. The synthesis method is simple and is free from pollution, operation steps can be easily controlled, scale production is realized, and realizability is high. The obtained porous carbon material is used as the potassium ion battery cathode and has excellent electrochemical performance and good cycling stability.

The invention belongs to the preparation field of traditional Guangdong Jun glaze in Foshan Shiwan art ceramics, and discloses a Guangdong Jun Blue glaze prepared from commonly used raw materials in a ceramics factory and a preparation method of the Guangdong Jun Blue glaze. The method comprises the following steps: using common glaze raw materials widely applied in the existing ceramics factory such as feldspar, quartz, limestone, calcined talc, black clay, cattle and sheep ashes and chemical toners CuO, CoO, Fe2O3 and the like to replace the lead-containing traditional raw materials such as ramulus mori ashes, miscellaneous wood ashes, straw ashes, canal mud, jade powder, carnelian cobble, copper ore, yellow stone, star cinnabar, graphite and Lion mountain ashes which are complex or expensive in treatment, or nearly exhausted, or large in toxicity to the environment. The Guangdong Jun glaze disclosed by the invention is wide in raw material resource, low in cost, simple in preparation process, and unnecessary to renovate the equipment, the obtained Guangdong Jun glaze formula is simple in composition, smooth in glaze, high in stability, and has the color characteristics of the Guangdong Jun glaze.

The invention discloses a phosphorus-containing intrinsic flame-retardant thermoplastic nylon elastomer and a preparation method thereof. The phosphorus-containing intrinsic flame-retardant thermoplastic nylon elastomer is a nylon elastomer represented by the following structural general formula [I] obtained by the melt copolymerization reaction of a carboxyl-terminated nylon pre-polymer, a hydroxyl-terminated polyether polyol and a phosphorus-containing diol monomer, or is a nylon elastomer represented by the following structural general formula [II] obtained by the melt copolymerization reaction of a carboxyl-terminated phosphorus-containing nylon pre-polymer and a hydroxyl-terminated polyether polyol. The nylon elastomer is a multi-block copolymer, a phosphorus-containing reactive flameretardant is copolymerized and embedded in the molecular chain of the thermoplastic nylon elastomer, the effective flame retardancy at a low content can be realized, the durability is good, no migration problem exists, the ratio of a soft segment, a hard segment and the flame retardant can be adjusted, and demands of different mechanical properties of different application fields are satisfied under the premise of high efficiency flame retardant. The preparation method is simple, the raw materials are easily available, and the expanding production is favorable.

The invention discloses a method for solvent extraction-column chromatography separation of coal tar, and an apparatus thereof. The method comprises the following steps: respectively placing C5-C7 alkane as a solvent and coal tar in a solvent extraction system, heating, stirring, allowing the obtained solution to stand for completing extraction, allowing the obtained extract liquid to enter a chromatography column system filled with a silica gel filler, carrying out cycle elution on the chromatography column system with an extraction solvent as an eluant, carrying out cycle extraction and column chromatography elution several times to obtain a raffinate (soft asphalt) in the extraction system and neutral oil in a concentration kettle, changing the eluant to ethyl acetate or toluene, and carrying out cycle elution several times to obtain crude phenols in the concentration kettle. The method for separating coal tar is environmentally-friendly, and does not generate wastewater, waste residues or waste gases; and the whole apparatus is in a relatively closed pipeline, so the contact of easy-oxidation and easy-decomposition substances with air is reduced.

Provided are a device and process for separating coal tar components. Coal tar and alkane of C5-C8 undergo mixed extraction in an extractor and still standing and a first solenoid valve is opened to discharge an asphalt component; alkane chromatographic column elution and separation of C5-C8 are performed: the mixture of the coal tar components where the asphalt component is removed and alkane of C5-C8 are sent into a chromatographic column to be separated; mixed liquid obtained through chromatographic column separation enters a first distillation tower to be distilled to obtain a neutral oil component and alkane of C5-C8, and the neutral oil component is discharged; polar solvent chromatographic column elution and separation are performed; a polar solvent is pressurized through a pressure pump and then enters the chromatographic column to undergo elution and separation and then enters a second distillation tower to be separated to obtain a crude phenol component and the polar solvent, and the separation of the coal tar components is finished. The process is a green separation process, and no waste water, waste residue or waste gas is generated. The operation conditions of the process are mild, simple and convenient, and the process and the device are low in cost and small in investment.