56results about How to "Ease of large-scale industrialization" patented technology

The invention relates to a preparing method for a two-dimensional crystal MXene nanometer material. The preparing method comprises the steps that a high-purity ternary lamellar MAX-phase ceramic block material is ground and then screened, and MAX-phase ceramic powder is obtained; the MAX-phase ceramic powder and HF acid salt crystals are weighed in the mass ratio of 2:(5-15) and then added into deionized water, an etching reaction is carried out at 30-85 DEG C, washing and drying are carried out, and the two-dimensional crystal MXene nanometer material is obtained. The MXene nanometer material prepared through the method has an obvious graphene-like two-dimensional lamellar structure and is expected to be applied to the fields such as supercapacitors, lithium ion batteries and adsorption; the MAX phase is subjected to etching treatment with acid salt, the method is simple and easy to implement, safe and reliable, and large-scale industrialized popularization is easy.

The invention discloses a vinylene carbonate-based lithium ion battery polymer electrolyte and a preparation method as well as application thereof in a room-temperature full-solid lithium ion battery. The vinylene carbonate-based lithium ion battery polymer electrolyte comprises vinylene carbonate or a copolymer of vinylene carbonate, lithium salt, a porous backing material and an additive, wherein the molecular weight of a vinylene carbonate-based polymer is 172-1*10<7> Da; the ionic conductivity of the vinylene carbonate-based polymer electrolyte is 1*10<-3>-1*10<-5>S / cm at 25 DEG C; the initial decomposition voltage range is 4.5-5.2 V vs.Li<+> / Li. The vinylene carbonate-based electrolyte is prepared by the in-situ polymerization method, so that the electrolyte has excellent interfacial compatibility with electrodes. The vinylene carbonate-based polymer electrolyte can be used in the room-temperature full-solid lithium ion battery; the vinylene carbonate-based polymer electrolyte is excellent in electrochemical oxidation reduction stability, and can be used in high voltage resistant polymer electrolyte materials. The invention further provides the preparation method of the vinylene carbonate-based lithium ion battery polymer electrolyte, and a lithium ion battery made of the electrolyte.

The invention discloses an electrochromic device and a manufacturing method of the electrochromic device. The electrochromic device comprises a transparent conducting layer, an electrochromic layer and an electrolyte layer, and the electrolyte layer is a transparent nano-particle film filled with electrolyte solutions with Li ions. An anode electrochromic layer or a cathode electrochromic layer is adopted as the electrochromic layer, and the electrochromic behaviors of four colors (orange-yellow-green-blue) can be achieved under the multi-step electric potential ([-3.0, +3.0] V). The inorganic oxide nano-particle film is manufactured based on the plasma enhanced chemical vapor deposition technology and is fully soaked in the electrolyte solutions with the Li ions to form an inorganic-organic composite film as the solid electrolyte layer, cost is low, the electrochemical deposition technology, the PECVD technology, the magnetron sputtering technology and the like are adopted in the manufacturing process of the electrochromic device, deposition is carried out at the room temperature, large-size growth can be achieved easily, compared with an existing electronic device, process compatibility is good, large-scale industrialization is easy to achieve, and therefore the manufacturing cost of the device can be greatly lowered.

A method for using ganoderma lucidum liquid fermentation liquor to prepare feed and feed additive containing ganoderma lucidum active ingredient, pertains to the field of biofermentation and feed. The invention includes steps of: a. centrifugally separating the ganoderma lucidum liquid fermentation liquor at 5000 per-minute to obtain the ganoderma lucidum fermentation supernatant and ganoderma lucidum residues; b. adopting a rear spraying process to mixing the ganoderma lucidum fermentation supernatant with the feed in a proportionality of adding 0.5-1.5 ml of the supernatant in the feed for preparing feed containing ganoderma lucidum active ingredient; c. performing a second fermentation to the ganoderma lucidum residues for preparing the feed additive containing ganoderma lucidum active ingredient. The invention fully use the ganoderma lucidum fermentation liquor, has no waste water and waste slag discharge, simple steps, low cost, and easy large-scale industrialization. Products are rich in Ganoderma lucidum polysaccharides and ganoderma lucidum acid; have a balance immune system, and antibacterial, antiviral, anti-parasitic, anti-tumor, anti-radiation and the like extensive physiology activities, thereby largely improving the immune disease resistance, maintaining the animal intestinal health, and further improving the production performance and market efficiency of animals.

The invention discloses an environment-friendly Zn-Sb phase change storage thin-film material and a manufacturing method of the environment-friendly Zn-Sb phase change storage thin-film material. The environment-friendly Zn-Sb phase change storage thin-film material is characterized in that the chemical structural formula of the material is ZnxSb(100-x), and x is larger than 0 but smaller than 60. The manufacturing method comprises the steps of installing an elemental Sb or Zn target material in a magnetic control direct current sputtering target, installing a ZnSb alloy target material in a magnetic control radio frequency sputtering target, vacuumizing a sputtering chamber until the vacuum degree is 2.0*10<-4>Pa, feeding high-purity argon of 50ml / min into the sputtering chamber until the air pressure reaches 0.35Pa, controlling the sputtering power of the ZnSb alloy target material to be 20-50W, controlling the sputtering power of the elemental Sb or Zn target material to be 0-40W, and obtaining the finished environment-friendly Zn-Sb phase change storage thin-film material after the target materials sputter for 5 minutes at the room temperature. The environment-friendly Zn-Sb phase change storage thin-film material and the manufacturing method of the environment-friendly Zn-Sb phase change storage thin-film material have the advantages that the crystallization temperature is high, the phase change speed is high, the switch ratio is large, data retentivity is good, stability is high, and power consumption is small.

The invention relates to a ceramic pressure sensor chip capable of accurately correcting and adjusting the temperature drift error, a correcting and adjusting system and a correcting and adjusting method. An existing ceramic pressure sensor does not correct and adjust the temperature drift error conveniently, and the equipment and technology for industrialization correcting and adjusting are lacked. The ceramic pressure sensor chip comprises a chip body, a Wheatstone bridge circuit inside the chip body is connected with a combined temperature drift compensation resistor, the combined temperature drift compensation resistor comprises an correctable and adjustable resistor and a plurality of rough adjusting resistors, the two ends of each rough adjusting resistor are connected to two printed metal foil wires respectively, and the correctable and adjustable resistor is connected to one metal foil wire in series. The temperature drift correcting and adjusting system comprises a temperature drift sorting system and a temperature drift correcting and adjusting system. The invention further relates to the corresponding temperature drift correcting and adjusting method. The ceramic pressure sensor chip has the advantages of being simple in structure and capable of accurately correcting and adjusting the temperature drift error in an industrialization mode, the correcting and adjusting system and the correcting and adjusting method are scientific in design, high in efficiency, low in cost and suitable for being used by ceramic pressure sensor manufacturing enterprises.

The invention relates to a preparation method and application of a deacetylated chitosan ecological finishing agent used for finishing natural fibers and regenerated natural fiber fabrics. The invention aims to solve the technical problems of a crosslinking problem, size and uniformity of chitosan acetic acid sol particles and stability of the finishing agent. The method is technically characterized by comprising the following steps: mixing chitosan and lacial acetic acid to form an acetic acid aqueous solution with the acetic acid concentration of 1.5-3 percent, dripping a 10g / L of ion stabilizer agar solution, regulating the size of the chitosan colloid particles to be in a distribution range of 60-100nm, forming a uniform and stable acetic acid-chitosan colloid solution of which the colloid size is in a nanoscale, controlling the pH value to be 4-7, wherein the viscosity of the colloid solution is 2-60mPa.s. The method has good chitosan fixation effect, does not have harmful or chemical residues and is environment-friendly, high-efficiency, harmless to human bodies and rich in raw material source.

The invention relates to antibacterial chitosan gauze and a manufacturing method thereof, belonging to the technical field of antibacterial chitosan gauze manufacturing. The manufacturing method is technically characterized by comprising the following steps of: preparing chitosan, a crosslinking agent and water into a solution, adding water to dilute the solution, and preparing into a multifunctional chitosan finishing agent; preparing a cationic surfactant and water into a cationic surfactant solution, and adding a pH adjuster to adjust the pH value of the cationic surfactant solution to 9-11; heating the multifunctional chitosan finishing agent to 25-40 DEG C, immersing common gauze in the solution, rolling the immersed gauze, dehydrating the rolled gauze, and performing primary drying;immersing the dried gauze in an alkaline surfactant solution, maintaining the temperature at 25-40 DEG C, rolling the immersed gauze, removing the alkaline surfactant solution, and performing stentering formation and secondary drying. The antibacterial chitosan gauze has the advantages of good antibacterial action, small investment to production equipment, simple process and no influence on dyeing uniformity.

The invention discloses a blue-light-excited TFT (thin film transistor)-LED (light emitting diode) array display substrate and a manufacturing method thereof. A semiconductor integrating technique is utilized to integrate double TFTs and a blue LED unit on one substrate; blue-light-excited fluorescent powder is utilized to implement white light emission; and a color film technology is utilized to implement blue-light-excited TFT-LED array display. Two TFTs and a capacitor are integrated on each isolated light-emitting array unit as a control circuit of the light emitting unit; a fluorescent powder layer is covered on the array substrate, and a color film substrate matched with the array substrate is covered on the fluorescent powder layer; or the fluorescent powder layer and the color film substrate are integrated, and the color film substrate is directly covered on the array substrate. The substrate disclosed by the invention can overcome the defects in the existing LED and LCD (liquid crystal display) display to some extent, and greatly enhance the display quality and display effect; and the manufacturing method is compatible with the existing semiconductor technique, and can easily implement industrialization.

The invention relates to the field of semiconductor devices, and provides a normally-off HEMT device with a longitudinal grid structure and a manufacturing method thereof. The HEMT device comprises a substrate, a buffer layer, an i-GaN layer, a grid dielectric layer and a passivation layer arranged in an overlapped mode, a source electrode coated between the ladder-shaped lower layer and the grid dielectric layer, a barrier layer and a drain electrode coated between the ladder-shaped upper layer and the grid dielectric layer, a grid electrode coated between the grid dielectric layer and the passivation layer, a source electrode pad passing through the passivation layer and the grid dielectric layer sequentially to contact with the source electrode, and a drain electrode pad passing through the passivation layer and the grid dielectric layer sequentially to contact with the drain electrode, wherein one end of the i-GaN layer and one side deviating from the buffer layer is ladder-shaped; the grid electrode has a Z-shaped section, the upper level of the grid electrode is located above the ladder-shaped upper layer, and the lower level is located above the ladder-shaped lower layer. The length of a grid electrode opening channel can be reduced, the grid on-state resistance of the device is reduced, and normally-off operation is realized.

The invention discloses a flexible and efficient crystalline silicon solar cell and a manufacturing method thereof. The method comprises the steps that a suitable front face structure is manufactured on a crystalline silicon substrate at first, a protective layer is manufactured for well protecting the front face structure, the chemical etching method is adopted for thinning the substrate from the back face until flexibility exists, the protective layer is removed, and then a back face structure and a complete front face structure are manufactured; crystalline silicon is adopted as the substrate; the complete front face structure is a light trapping / emitter region / passivation antireflection layer / front face electrode; the protective layer has the excellent corrosion resistance, stability and integrity in the chemical etching system; the chemical etching method thins the substrate from the back face to the certain thickness, and the excellent flexibility exists; the back face structure is a back face field / passivation layer / back face electrode. According to the flexible and efficient crystalline silicon solar cell and the manufacturing method of the flexible and efficient crystalline silicon solar cell, the crystalline silicon is used as an absorption base region of the flexible cell, has the excellent photoelectric property, and provides the foundation for obtaining the efficient and flexible cell.

The invention discloses a method for preparing an adsorbent resin with ultra-high specific surface area. The method is characterized by suspension polymerization in a styrene / divinylbenzene copolymerization system and a special porogenic agent and self-crosslinking reaction in the presence of a catalyst in sequence. The method has the advantages of simple process and low cost and is easy for scale industrialization. The obtained product has ultra-high specific surface area, uniform pore size and distribution and high and stable quality, is suitable for the fields with high requirement for specific surface areas of adsorbent resins and has extensive application prospect.

The invention provides a sodium ion bifunctional gel polymer electrolyte and a preparation method and application thereof. The gel polymer electrolyte comprises an electrolyte matrix, sodium alginate and an electrolyte, wherein the electrolyte matrix comprises a boron-containing polymer and a porous support body; the boron-containing polymer is obtained by in-situ polymerization on a porous support body; the boron-containing polymer contains rich polar ethyoxyl groups, and the sodium alginate is attached to the electrolyte matrix after being combined with the boron-containing polymer. According to the electrolyte, on one hand, the stability of a positive electrode / electrolyte interface can be improved by utilizing the metal affinity characteristic of sodium alginate; and on the other hand, the boron-containing polymer is introduced into the electrolyte, so that the concentration polarization of the battery can be reduced by increasing the sodium ion transference number of the electrolyte, a stable negative electrode / electrolyte interface can be constructed by inducing uniform sodium deposition, and the solid-state sodium ion battery assembled by adopting the electrolyte has good rate capability and cycling stability.

The invention relates to a trimethylglyine compound nanoemulsion used for nourishing and moisturizing skin and a preparation method thereof. The nanoemulsion is prepared from the following raw materials in parts by weight: 10-17 parts of isopropyl myristate, 20-25 parts of Caprylocaproyl Macrogolglycerides, 6-16 parts of polyglyceryl fatty acid ester, 33-38 parts of triple distilled water, 0.1-1.0part of citric acid, 5.5-12 parts of Trisodium citrate dihydrate, 13-19 parts of trimethylglyine lactone, 13-19 parts of hydroxyethyl carbomite, 36-46 parts of Vitamin E and 10-16 parts of azone. Theinvention has the innovations that the newest international drug targeting vector transfer system is improved and optimized so as to enable the nanoemulsion to have dual effects of nourishing and moisturizing skin; the nanoemulsion can be made up and produced only at normal temperature, and the complex processes of respectively dissolving, heating, then mixing and emulsifying the oil phase and the water phase are not needed; the process is scientific, the operation is simple, special equipment is not needed, the preparation period is short (about 30 min), the production efficiency is high, and the industrialization is easy to realize; moreover, the nanoemulsion has stable quality, high comfort and high safety, and the effect ingredients are not easy to break; compared with the like products, the nanoemulsion has better effect, saves more energy, energy resources, materials, time and cost, reduces environmental pollution and the like.

The invention discloses freeze-drying, non freeze-drying hydroquinone monocarbonylate nano-emulsions for beauty treatment and a process for preparation. The freeze-drying nano-emulsions contain the following materials by weight proportion: hydroquinone monocarbonylate 0.5-4 parts, vitamin E 0.2-2.0 parts, isopropyl myristate 8-18 parts, octanoic acid capric acid triacetate 0.1-1.0 parts, octanoic acid capric acid glycedol 32-40 parts, polyglycerol fatty acid esters 10-14 parts, double distilled water 35-45 parts, manna sugar 15-25 parts, aminoacetic acid1-6 parts. The non freeze-drying nano-emulsions contain the following materials by weight proportion: monocarbonylate 0.5-4 parts, vitamin E 0.2-2.0 parts, isopropyl myristate 8-18 parts, octanoic acid capric acid triacetate 0.1-1.0 parts, octanoic acid capric acid glycedol 32-40 parts, polyglycerol fatty acid esters 10-14 parts, double distilled water 35-45 parts. The invention has the advantages of simple preparation method, easy practical operation and industrialization, stable quality of products, prolonged storage time, and effective and quick preparation. The whole process for preparion can be finished in less than 30 minutes. No special apparatus is needed. Great progress has been made in saving energy and materials, and reducing the environmental contamination.

The invention provides a preparation method of a plastic glove, which comprises the following steps: A) stirring and mixing a plasticizer, a stabilizer, an emulsifier, water and a PVC (Polyvinyl Chloride) copolymerized modified emulsion to obtain mixed slurry, wherein the plasticizer comprises at least one of phthalic acid esters, terephthalic acid esters, citric acid esters, adipic acid esters and epoxy fatty acid esters; B) performing vacuum defoaming on the mixed slurry to obtain mixed slurry subjected to vacuum defoaming; and C) dipping a hand mold in a coagulator solution, taking out and drying the hand mold, dipping the hand mold in the vacuum-defoamed mixed slurry, taking out and drying the hand mold, and conducting baking and plasticizing to obtain the plastic glove. The use of a diluting solvent and a viscosity reducer is avoided, the cost of the glove is reduced, the processing temperature is low, VOC emission is avoided in the glove production process, the glove is green and environmentally friendly, and the prepared plastic glove is low in plasticizer content, low in glove plasticizer precipitation value, small in thickness, uniform in thickness distribution and excellent in mechanical property.

The present invention provides lycium ruthenicum pigment soft sweets. The lycium ruthenicum pigment soft sweets are prepared by the following raw materials in parts by weight: 10-20 parts of a lycium ruthenicum pigment water extract, 40-50 parts of gelatin, 8-15 parts of glycerin, 40-60 parts of a sweetener, 2-10 parts of an acidulant and 100 parts of water. The lycium ruthenicum pigment water extract used in the lycium ruthenicum pigment soft sweets is rich in anthocyanins, amino acids, polysaccharides and other various nutrients, so that the soft sweets are high in nutritional value and unique in taste, and have good market prospects.

The invention relates to a method for preparing a Mo-doped VO2 thermochromic film through an atomic layer deposition method. The chemical constitution of the Mo-doped VO2 film is V1-xMoxO2, wherein xis greater than or equal to 0.02 but less than or equal to 0.1. The Mo-doped VO2 film is obtained according to the steps that a VO2 / MoO3 nanometer laminated layer is obtained by alternately and circularly depositing VO2 and MoO3 on a substrate through the atomic layer deposition method and then conducting annealing. The V1-xMoxO2 film has good visible light transmittance and thermochromic characteristics, and is expected to be applied to intelligent windows and other fields.

The invention discloses a manufacturing method of a flexible high-light-trapping-property radial-junction heterojunction efficient crystalline silicon solar cell. The method comprises the following steps: (1) preparing a crystalline silicon chip of which the thickness is 80-500 microns and the resistivity is 0.1-1,000 ohm.cm for serving as a substrate; (2) making a solar cell front side structure or semi-finished product front side structure on the crystalline silicon substrate; (3) protecting the made front side structure, and thinning the substrate from the back side: making a protective layer of 100 nanometers to 100 microns on the made solar cell front side structure or semi-finished product front side structure or making a border on the back side at the same time for protecting, thinning the crystalline silicon substrate from the back side by 5-50 microns; removing the protective layer or removing the protective layer together with a back side border protective layer; (4) making a back side structure: depositing a heterojunction silicon-based passivation layer of 2-100 nanometers and a back side field of 2-50 nanometers on the back side. By adopting a heterojunction structure, the conversion efficiency, open-circuit voltage, short-circuit current and the like of the cell are increased greatly; since the crystalline silicon with excellent photoelectric performance is taken as an adsorption base region of a flexible cell, high conversion efficiency is ensured.

The invention provides a preparation method of nano TiO2 photocatalyst particles. The method comprises the following steps: (1) neutralizing precipitation process; (2) dispersion process; (3) oxidative transformation process; (4) curing process. The method not only solves the problem of easy aggregation of the nano TiO2 photocatalyst particles, enables the product particle sizes to be small, enables the average particle size to be less than 30nm and enables the product to be higher in concentration, but also has a good formaldehyde degradation function under the condition of visible light and overcomes the defect that the traditional photocatalyst works only under the condition of ultraviolet light, thus being wider in application scope. The preparation method does not need high-temperature calcination or water-bath heating, is low in requirements for equipment, simple in technological process and easy to operate and control; furthermore, the preparation method can use general industrial grade raw materials, thus being economical and reasonable in cost; therefore, the method has very high market competitiveness and is easy in realization of large-scale industrialization.

A method for using ganoderma lucidum liquid fermentation liquor to prepare feed and feed additive containing ganoderma lucidum active ingredient, pertains to the field of biofermentation and feed. The invention includes steps of: a. centrifugally separating the ganoderma lucidum liquid fermentation liquor at 5000 per-minute to obtain the ganoderma lucidum fermentation supernatant and ganoderma lucidum residues; b. adopting a rear spraying process to mixing the ganoderma lucidum fermentation supernatant with the feed in a proportionality of adding 0.5-1.5 ml of the supernatant in the feed for preparing feed containing ganoderma lucidum active ingredient; c. performing a second fermentation to the ganoderma lucidum residues for preparing the feed additive containing ganoderma lucidum activeingredient. The invention fully use the ganoderma lucidum fermentation liquor, has no waste water and waste slag discharge, simple steps, low cost, and easy large-scale industrialization. Products are rich in Ganoderma lucidum polysaccharides and ganoderma lucidum acid; have a balance immune system, and antibacterial, antiviral, anti-parasitic, anti-tumor, anti-radiation and the like extensive physiology activities, thereby largely improving the immune disease resistance, maintaining the animal intestinal health, and further improving the production performance and market efficiency of animals.

The invention discloses an MSM type deep ultraviolet photoelectric detector based on a cubic boron nitride thick film and a preparation method. The MSM type deep ultraviolet photoelectric detector comprises a substrate, a boron nitride buffer layer which is positioned on the substrate, a cubic boron nitride thick film which is positioned on the boron nitride buffer layer, and a pair of electrodeswhich are respectively stacked on the cubic boron nitride thick film. The electronic characteristics of the cubic boron nitride ultra-wide forbidden band, the stability in an extreme environment and other remarkable material performance advantages are utilized, the cubic boron nitride ultra-wide forbidden band is used as a light absorption layer, the photoelectric response of the device in a deepultraviolet region can be directly obtained, the dark current is low, the sensitivity is high, and the response speed is high; the MSM type deep ultraviolet photoelectric detector can be applied to extreme environments with high temperature, high pressure, high energy radiation and corrosivity, and has very high practical value in the fields of aerospace and information communication; the detectorcan be directly manufactured on a silicon-based substrate and can be compatible with an existing silicon-based process, device integration is facilitated, the process is simple, and large-scale industrialization is facilitated.

The invention relates to a hydrothermal preparation of ultrafine calcium silicon-phosphate powder and application thereof. The preparation method comprises the following steps that a calcium source, aphosphorus source, a silicon source and a dispersing agent are mixed to obtain a mixture; wherein a molar ratio of Ca in the calcium source, P in the phosphorus source and Si in the silicon source is5:2:1; the mixture is sealed in a hydrothermal device for hydrothermal reaction to obtain a crude precursor; the crude precursor is treated to obtain a precursor product; and the precursor product iscalcined to obtain a calcium silicon-phosphate powder. The invention also relates to a calcium silicon-phosphate powder material prepared by the method and a use of calcium silicon-phosphateceramic material in repair materials that repairs bone tissue or other hard tissues. The method has the advantages of low cost, simple operation cycle and short particle size, and the prepared calcium silicon-phosphate material has potential application value in biomedical materials, especially in the application of defect repair of human hard tissue.

The invention relates to a gelatin hybridized compound as well as a preparation method and application thereof and particularly discloses a compound. The compound contains nanoparticles and biodegradable gelatin, wherein the gelatin is cross-linked to the surfaces of the nanoparticles; and the particle size of the compound is from 20 nanometers to 500 microns. The invention further discloses the preparation method and application of the compound. The compound has the excellent performance of high drug loading capacity and tumor permeability and can be gradually released in tumor cells. The preparation method is simple in process, controllable and convenient for large-scale industrialization. The compound can be widely applied to the diagnosis and treatment processes of various diseases.

The invention relates to the technical field of plastic glove production, in particular to a PVC glove and a preparation method thereof. The preparation method comprises the following steps: A) stirring and mixing a polyester plasticizer, a stabilizer, an emulsifier, water and a water-based PVC emulsion to obtain mixed slurry, wherein the polyester plasticizer comprises at least one of poly (propylene glycol adipate) and poly (diethylene glycol adipate); B) performing vacuum defoaming on the mixed slurry to obtain mixed slurry subjected to vacuum defoaming; and C) dipping a hand mold in a coagulator solution, taking out and drying the hand mold, then dipping the hand mold in the vacuum-defoamed mixed slurry, taking out and drying the hand mold, and baking and plasticizing the hand mold to obtain the PVC gloves. According to the preparation method provided by the invention, the use of a diluting solvent and a viscosity reducer is avoided, the cost of the gloves is reduced, VOCs are not discharged in the production process of the gloves, the gloves are green and environment-friendly, meanwhile, the process is simple to operate and easy to industrially popularize on a large scale, and the prepared PVC gloves are relatively excellent in oil resistance.

The invention discloses a preparation method of chemimechanical leaf pulp. The preparation method comprises the main steps of material preparation, chemical treatment, mechanical kneading and screening, mechanical pulp grinding and the like. The prepared chemimechanical leaf pulp takes vein tissues as a skeleton structure, is high in pulp yield and good in pulp performance, and can be used for producing corrugated base paper, packaging paperboards, paper-plastic molds, cultural paper and the like. Broadleaf wood leaves with rich resources are used as a raw material to produce the paper pulp, so that the problem of fiber resource shortage in the papermaking industry in China can be effectively relieved, pulping and papermaking wood resource consumption can be reduced, and the natural environment is protected. The method is simple in technological process, high in operability, low in production cost and easy for large-scale industrialization.

The invention provides a preparation method of high-purity spherical full-pore silica gel particles. The method is carried out according to the following steps of: hydrolyzing, polymerizing in advance, distilling, preparing a water phase, preparing an oil phase, synthesizing particles and grading. In the invention, ethyl orthosilicate is used as a raw material, silica sol with high concentration (which is greater than 90wt%) is obtained by hydrolyzing and polymerizing in advance under an acidic condition, and the yield is enhanced; the formula of emulsion is optimized through a method of emulsion polymerization by adopting a compounded surfactant, the stability of the emulsion and the monodispersity of liquid drops are enhanced, the agglomeration and the shape deformation of the particlesare avoided, and water is adopted as a reaction medium, which adapts to the requirement of environmental protection; in the preparation of the particles, a pore structure is naturally formed without burning organic components at high temperature to obtain a porous structure, which is simple, convenient and effective and protects the environment; the entire method has simple procedure, excellent repeatability and low cost; and the obtained material has high purity, good mechanical strength, uniform particle diameter, controllable size and narrow and controllable pore diameter distribution.

The invention relates to a method for preparing a high-purity tantalum target for electronic materials, which belongs to the field of powder metallurgy and semiconductor device manufacturing. The preparation method is to pulverize a high-purity tantalum block first, and then ball mill it to a particle size of 5-150 μm. Tantalum powder; after mixing the tantalum powder, install the mold, vibrate and compact; then put the mold into a high-temperature hot-press furnace, and press at 1500-1800°C; after sintering, cool to room temperature and release the furnace to obtain high-purity Green body of tantalum target, density 11.3‑14.5g / cm 3 . According to the requirements of the magnetron sputtering equipment, the green body is cut and processed, and the processed green body is welded to the corresponding back plate according to the user's requirements to obtain a high-purity tantalum target. The high-purity tantalum target prepared by the present invention can significantly reduce the technical difficulty of preparing the target by the traditional casting method, greatly improve the controllability of the process, and contribute to the improvement of the coating performance of later materials.

The invention relates to a ceramic pressure sensor chip capable of accurately correcting and adjusting the temperature drift error, a correcting and adjusting system and a correcting and adjusting method. An existing ceramic pressure sensor does not correct and adjust the temperature drift error conveniently, and the equipment and technology for industrialization correcting and adjusting are lacked. The ceramic pressure sensor chip comprises a chip body, a Wheatstone bridge circuit inside the chip body is connected with a combined temperature drift compensation resistor, the combined temperature drift compensation resistor comprises an correctable and adjustable resistor and a plurality of rough adjusting resistors, the two ends of each rough adjusting resistor are connected to two printed metal foil wires respectively, and the correctable and adjustable resistor is connected to one metal foil wire in series. The temperature drift correcting and adjusting system comprises a temperature drift sorting system and a temperature drift correcting and adjusting system. The invention further relates to the corresponding temperature drift correcting and adjusting method. The ceramic pressure sensor chip has the advantages of being simple in structure and capable of accurately correcting and adjusting the temperature drift error in an industrialization mode, the correcting and adjusting system and the correcting and adjusting method are scientific in design, high in efficiency, low in cost and suitable for being used by ceramic pressure sensor manufacturing enterprises.