36results about How to "Guaranteed batch stability" patented technology

A continuous production method of insoluble sulfur comprises the steps of sulfur melting, extraction, curing, crushing and drying. The continuous production method of insoluble sulfur is carried out under a totally closed condition. The method concretely comprises the following steps: 1, placing sulfur in a sulfur melting pool (1), melting, pumping the molten sulfur to a heating coil tube (3) through a metering pump (2), heating, and mixing high-temperature sulfur with low-temperature carbon disulfide in an ejector (4) to complete quenching; 2, letting the quenched mixed liquid comprising insoluble sulfur and carbon disulfide into a continuous-rotation rotary kiln (6) through a rotary joint (5) to form a mixed liquid containing cured insoluble sulfur particles and carbon disulfide; 3, conveying the mixed liquid obtained in step 2 to a crushing pump (8), and crushing; 4, sending the mixed liquid containing crushed insoluble sulfur and carbon disulfide to a material crushing pot (9), and carrying out solid-liquid separation through a filter screen; and 5, sending insoluble sulfur to a vacuum dryer (10), and drying. The method has the advantages of continuous production of the insoluble sulfur under the totally closed condition, safety, environmental protection, stable product quality, high efficiency, and low energy consumption.

The invention relates to a method for preparing a multielement positive pole material for sodium-ion batteries and belongs to the technical field of lithium-ion batteries. The method for preparing the multielement positive pole material for the sodium-ion batteries comprises the following steps: (1) weighing a nickel source compound, a ferrum source compound, a manganese source compound and a lithium source compound according to the atomic ratio of x, y and z in a chemical formula, i.e., Na(0.67)Ni(x)Fe(y)Mn(1-x-y-z)O(2) of a predetermined synthesized product, and carrying out preliminary mixing on the raw materials, wherein each of x, y and z is not smaller than 0.01 and is smaller than 1; (2) feeding the preliminary-mixed raw materials to an airtight gas tank by using high-speed gas flow, and subjecting the raw materials to mutual collision and mutual friction inside the airtight gas tank, so as to obtain a crushed, mixed and activated precursor; (3) placing the precursor, which is crushed and activated by the high-speed gas flow, into a high-temperature tunnel kiln, heating the precursor to the temperature of 875 DEG C to 950 DEG C in an air or oxygen atmosphere, carrying out heat preservation for 15 hours to 20 hours, and carrying out cooling, thereby preparing a powder product of the multielement positive pole material Na(0.67)Ni(x)Fe(y)Mn(1-x-y-z)O(2). The method has the advantages that the process is simple, the cost is low, the production efficiency is high, the uniformity of the product is good, the electrochemical properties are excellent, and the like.

The invention belongs to the technical field of UV (ultraviolet) curing glue, and discloses solvent-free UV curing glue for an optical transparent adhesive tape and a preparation method and application thereof. The glue comprises the following components in parts by mass: 20-60 parts of aliphatic polyurethane acrylate, 5-15 parts of hyperbranched polyester acrylate, 10-25 parts of acrylate monomer, 1-10 parts of thiol, 1-10 parts of tackifying resin, 0.1-1 part of leveling agent, 0.5-2 parts of antifoaming agent and 0.5-2 parts of photoinitiator. In the invention, the colloid crosslinking density and colloid strength are improved by preferentially adopting aliphatic polyurethane acrylate with low functionality degree and adding hyperbranched polyester acrylate; the acrylate monomer adjusts the viscosity and enhances the colloid strength; the caking property is improved by adding the thiol containing an ether structure; the prepared non-solvent UV curing glue for an optical transparent adhesive tape has high toughness, high light transmittance, low haze, high colloid strength, high viscosity, high thickness and low VOC (volatile organic compound) content.

The invention relates to a badminton racket handle and a preparation method thereof. The badminton racket handle is prepared from badminton racket handle high-energy glue through one-step curing formation. The badminton racket handle high-energy glue is prepared from 20 to 70 weight parts of thermosetting resin, 3 to 40 weight parts of foaming agents, 5 to 50 weight parts of fillers and 1 to 40 weight parts of fiber. The badminton racket handle prepared by the technical scheme has the advantages that the weight is light; the strength is high; the structure is more stable; the uniformity is good; the quality is stable.

The invention relates to a serum-free medium for culturing mesenchymal stem cells. Based on the volume of the serum-free medium, it includes the following components: α-MEM 10.2g / L, sodium bicarbonate 2.4g / L, L-glutamine 1-5mM, poloxamer 18850-300mg / L , Recombinant Human Albumin 2‑8g / L, Recombinant Human Transferrin 10‑20mg / L, Recombinant Human Insulin 2‑10mg / L, Hepes1‑5mM, β‑Mercaptoethanol 50nM, Lipid 0.1‑1mg / L, Trace Element 1‑5mg / L, glutathione 0.1‑5mg / L, p-aminobenzoic acid 0.5‑5mg / L, hydrocortisone 1‑50ng / mL, vitamin PP20‑50mg / L, vitamin C5‑50mg / L , compound of formula I 2-10μM, compound of formula II 5-20μM, progesterone 10-20ng / mL, putrescine 1-10mg / L, heparin 1-10IU / mL, EGF1-10ng / mL, b-FGF1- 10ng / mL, HGF1‑10ng / mL, VEGF1‑10ng / mL. The MSCs serum-free medium BPS‑SFM is a chemically defined, animal-derived substance-free, serum-free medium; .

The invention relates to the field of A-100 steel forging, and discloses a forging method of a large and complex die forging of A-100 steel and a design method of a pre-forging part thereof. The pre-forging part of the large and complex die forging of the A-100 steel adopts the design mode of a rhombic section of a rod portion, the deformation of a forging in the finish forging process can be increased to the maximum, and the deformation of the central portion of the rod portion of the forging can be >=25%; the grain size difference requirement of different positions of the forging is reducedto ensure that a grain grade differential grade of a finish forging is <=3; and meanwhile, the pre-forging part is quickly positioned, the blank in the forging process is prevented from tilting, and the filling of the forging is ensured.

The invention provides a lithium iron phosphate / lithium vanadium phosphate / carbon composite positive electrode material and a preparation method thereof, the molecular formula of which is (1-x)LiFePO 4 ·xLiVPO 4 F / C, where x=5-40wt%, and the mass fraction of C in the composite cathode material is 0.5-2.0wt%. The present invention first synthesizes lithium iron phosphate, and then synthesizes VPO 4 Intermediate, finally lithium iron phosphate, VPO 4 The intermediate is mixed with other raw materials for the synthesis of lithium vanadium phosphate, and then pressed and sintered to ensure that there is no heterophase formation of lithium vanadium phosphate in the composite material, and a composite structure with a dual-phase lithium intercalation active material is formed in the composite material to stabilize phosphoric acid The surface properties of iron-lithium materials can improve the surface / interface diffusion capacity of lithium ions and the transport rate of electrons, and improve their rate performance and cycle performance without sacrificing energy density.

The invention relates to a method for preparing an olivine type lithium iron phosphate positive electrode material, and belongs to the technical field of lithium ion battery electrode materials. The method comprises the steps: at room temperature, adding water to lithium carbonate, anhydrous iron phosphate and a carbon source and carrying out ball milling mixing, wherein the solid content is 30-70%, the molar ratio of Li to Fe to P is x to 1 to 1, 1<=x<=1.05, anhydrous iron phosphate is a mixed phase of monoclinal structure iron phosphate and tripartite structure iron phosphate with the molarratio of y:(1-y) or a mixed phase of hexagonal structure iron phosphate and tripartite structure iron phosphate with the molar ratio of y:(1-y), and 0<=y<=0.8; and after the ball-milled material is dried, sintering in a nitrogen atmosphere to obtain the olivine type lithium iron phosphate positive electrode material. The invention provides the method comprising that anhydrous iron phosphate havingspecific crystal structure is used as a raw material for preparing lithium iron phosphate, so as to further optimize the synthesis and performance of LiFePO4.

The invention provides a preparation method of traditional Chinese medicine composition particles for clearing heat and expelling damp, and traditional Chinese medicine composition particles for clearing heat and expelling damp prepared by the method. The preparation method comprises the following steps of: extracting volatile oil by a supercritical extraction method, extracting concentrated water-soluble active ingredients in a recycling way by means of thermal reflow, and further preparing the composition particles by utilizing the prepared condensed extract. The preparation method provided by the invention has the characteristics of being high in extraction efficiency, short in technological process, mild in preparation conditions, and less in energy consumption. The prepared traditional Chinese medicine composition particles for clearing heat and expelling damp is high in active ingredient content.

The invention discloses a method for preparing carboxyl magnetic beads for a magnetic particle chemiluminescence immune assay reagent. The method comprises the following steps: S1, preparing Fe3O4 nanometer magnetic microspheres; S2, preparing silica magnetic microspheres; S3, aminating the magnetic microspheres; S4, preparing carboxyl magnetic beads; S5, performing magnetic field response screening on the prepared carboxyl magnetic beads. The carboxyl magnetic beads prepared by the method provided by the invention have uniform magnetic field responsiveness, and the magnetic microspheres are cheap and readily available in raw material, simple in equipment, easy to control, high in process repeatability, stable in product quality, safe and reliable in operation, uniform in magnetic field responsiveness and easy for large-scale production. According to the invention, the activating rate and the coupling rate of the magnetic beads can be well controlled in the preparation of immunomagnetic beads, the risk of cross-linking the magnetic beads is reduced, and the stability of batches of magnetic bead coupling is guaranteed.

The invention relates to a preparation method of active ingredients of plant stem cells. Plant stem cells in a vigorous growth state are frozen within 20 to 30 minutes under the condition of -20 to -10°C, maintained in the frozen state for 1 to 5 hours, and then frozen at 26 Thawing is carried out under the condition of ~30° C., and the obtained liquid is the active ingredient of the plant stem cells. The extract prepared by the method of the present invention can improve the metabolic mechanism of the skin, can adjust the skin without penetrating into the skin, has high safety, and exhibits significant effects in anti-aging and anti-hair loss, and has Wide application prospects. Moreover, the cultivation method of the present invention has high controllability and can ensure the batch stability of the product.

The invention discloses a rapid assembling method of special-shaped cavity radiating units. The method is characterized by comprising the following steps that: S1, the assembling feature elements of radiating units are determined; S2, a feature element matching template library is created; S3, the images of assembling features are acquired and pre-processed; S4, the contours of the assembling features are recognized; S5, 3D reconstruction is performed for the assembling features; S6, the radiating units are grouped based on manufacturing precision; S7, the minimum variance of the selecting andmatching scheme of the radiating units is solved; and S8, assembling accuracy is predicted and controlled in real time based on actually measured data. With the rapid assembling method of the special-shaped cavity radiating units provided by the invention adopted, the accuracy and consistency of the assembling of the radiating units can be greatly improved; the batch stability of product qualitycan be ensured; the assembling features rapid measurement and assembling scheme automatic planning of the radiating units can be realized; assembling preparation cycles can be greatly reduced; an assembling process can be optimized automatically; the squeezing of the radiating units during an assembling process can be avoided; and repeated trail assembling and disassembling processes can be reduced.

The invention relates to the field of A-100 steel forging, and discloses a forging method of a large and complex die forging of A-100 steel and a design method of a pre-forging part thereof. The pre-forging part of the large and complex die forging of the A-100 steel adopts the design mode of a rhombic section of a rod portion, the deformation of a forging in the finish forging process can be increased to the maximum, and the deformation of the central portion of the rod portion of the forging can be >=25%; the grain size difference requirement of different positions of the forging is reducedto ensure that a grain grade differential grade of a finish forging is <=3; and meanwhile, the pre-forging part is quickly positioned, the blank in the forging process is prevented from tilting, and the filling of the forging is ensured.

A method for preparing battery-grade iron phosphate, comprising the following steps: preparing an iron salt solution, preparing a phosphorus source solution, and performing an oxidation precipitation reaction; the reacted feed liquid is filtered through a plate and frame; the filter cake is washed and sintered to finally obtain an iron phosphate product . The production device includes an iron salt storage tank, a phosphate storage tank, a reaction kettle, a retention kettle and a plate frame, and the iron salt storage tank and the phosphate storage tank are respectively connected to the top of the reaction kettle through a feeding pipeline. Connected to the board and frame in turn. The above preparation process adopts a continuous feeding and discharging production device, so that the oxidation precipitation reaction is in a state of dynamic equilibrium, the reaction time is short, the quality of the produced iron phosphate is stable, and the particle size is controllable, realizing the continuous industrial production of iron phosphate.

The invention relates to a polyvinyl butyral (PVB) synthesis process based on microdispersion technology. A process device includes a mixer, a microdisperser, a tubular reactor and a collection kettle that are connected in series in order. The process includes: firstly mixing a PVA aqueous solution with an HCl aqueous solution evenly by the mixer, then dispersing n-butyraldehyde into the mixed solution in the form of droplets in the microdisperser, quickly completing the vast majority of hemiacetal reaction and part of acetal reaction before PVB precipitate formation, then completing the vast majority of acetal reaction in the tubular reactor, and finally completing acetal reaction through the collection kettle and collecting the product. The process provided by the invention utilizes the microdisperser to realize rapid and even dispersion of butyraldehyde liquid drops in the mixed solution, reinforces the dissolution and reaction of n-butyraldehyde, and utilizes the tubular reactor to realize effective control of product acetalization degree, thereby ensuring product high acetalization degree, homogeneity and product batch stability. The catalyst concentrated hydrochloric acid is uniformly mixed at the early stage, and the water consumption of the whole process is reduced.

The invention discloses a method for preparing a microwave instant taco through sour dough and belongs to the technical field of food production. According to the method, firstly, liquid sour dough paste fermented through lactobacillus plantarum is prepared; secondly, the sour dough is taken to prepare taco dough, and the taco is prepared through the steps of fermenting, cooking and the like. According to the taco prepared through the method, the product technology can be effectively simplified, the product cost can be reduced, the amount of chemical addition agents can be decreased, the taco can be stored at least for four months at the normal temperature, the shelf expiration date of the product is effectively prolonged, the aging speed of the product is reduced, and the taco has the advantages of being nutrient, health, easy to process and the like.

The invention discloses a feeding formula in the metal injection molding technology and a preparation technology thereof. The feeding formula comprises powdery raw material composed of, by weight, 80-90% of metal powder, 5-10% of polyformaldehyde (POM) resin, 1-3% of high-density polyethylene (HDPE), 1-3% of high-density polypropylene (HDPP), 0.5-1.5% of ABS and 0.01-0.1% of stearic acid. The feeding formula in the metal injection molding technology and the preparation technology thereof have the beneficial effects that the feeding and mixing technology is innovated, the special mixing technology and the special control scheme are designed, the batch stability of feeding is guaranteed and the production efficiency is high; the project research and development is encouraged by the nation, accords with the national industrial policy and investment orientation and meets the national requirements of energy conservation and emission reduction and innovation of the advanced manufacturing technology; and meanwhile, the processing technology is upgraded, and the activity of the peripheral related manufacturing industries can be promoted.

The invention relates to a method for preparing an olivine type lithium iron phosphate positive electrode material, and belongs to the technical field of lithium ion battery electrode materials. The method comprises the steps: at room temperature, adding water to lithium carbonate, anhydrous iron phosphate and a carbon source and carrying out ball milling mixing, wherein the solid content is 30-70%, the molar ratio of Li to Fe to P is x to 1 to 1, 1<=x<=1.05, anhydrous iron phosphate is a mixed phase of monoclinal structure iron phosphate and tripartite structure iron phosphate with the molarratio of y:(1-y) or a mixed phase of hexagonal structure iron phosphate and tripartite structure iron phosphate with the molar ratio of y:(1-y), and 0<=y<=0.8; and after the ball-milled material is dried, sintering in a nitrogen atmosphere to obtain the olivine type lithium iron phosphate positive electrode material. The invention provides the method comprising that anhydrous iron phosphate havingspecific crystal structure is used as a raw material for preparing lithium iron phosphate, so as to further optimize the synthesis and performance of LiFePO4.