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

The invention provides a method for preparing nanosilver powder in batches, belonging to the field of nano-material preparation. Nanosilver particles are synthetized in two steps, at first, a low-concentration reducing agent solution is slowly added into a solution mixed with silver salt, a protective agent, and a pH conditioning agent drop by drop, and then a high-concentration reducing agent solution is rapidly added drop by drop to obtain a nanosilver mixed solution; impurities in the nanosilver mixed solution are removed through a membrane separation device to obtain a nanosilver dispersion liquid; and at the end, absolute ethyl alcohol and a high-molecular dispersant are added into the nanosilver dispersion liquid, and spray drying is carried out by a spray drying device to obtain nanosilver powder in a certain particle size. The particle size of the prepared nanosilver powder is controllable, the batches are stable, the problems of non-uniform particle size during the synthesis of nanosilver, nanosilver separation, and agglomeration and acaking during powder preparation are solved, the preparation process and the operation are simple, and industrial and batches production is realized.

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 belongs to the field of battery materials, and discloses battery-grade iron phosphate, a preparation method and application thereof. The preparation method comprises the following steps: roasting iron phosphate waste, adding into acid liquor, dissolving, and filtering to obtain a solution A containing an iron element and a phosphorus element; stirring the solution A and alkali liquor, adjusting the pH value to be acidic, and reacting to obtain iron phosphate slurry; heating the iron phosphate slurry, adding phosphoric acid, stirring for aging reaction, washing and filtering to obtain an iron phosphate dihydrate filter cake, and drying to obtain iron phosphate dihydrate powder; and roasting, dehydrating and cooling the iron phosphate dihydrate powder to obtain the battery-grade iron phosphate. According to the invention, recovered ferrophosphorus waste is used as a raw material, NaOH is used for precipitating amorphous iron phosphate, phosphoric acid is used as an aging agent under the high-temperature stirring condition, and battery-grade iron phosphate with the impurity content smaller than or equal to 1.0% is prepared through a one-step method.

The invention discloses feed for large-size part metal powder injection molding. The feed is composed of a bonding agent and gas atomization metal powder; the mass ratio of the bonding agent to the metal powder ranges from 96:4 to 92:8. Powder used in feed is gas atomization spherical powder, the high vibration density is achieved, the metal powder size proportion is high, after feed injection forming green blank sintering, the shrinkage rate is small, and the sintering size of a large-size part can be precisely controlled. Feed fluidity is good, low injection pressure and injection speed canbe used for forming the large-size part, the internal stress of the injection green blank is reduced, the phenomenon that the injection green blank is not full and flow lines exist is avoided, and thestable shrinkage rate after injection green blank degreasing and sintering can be kept; raw materials of components are cheap and easy to obtain, the adding amount is flexibly adjusted according to equipment, part molds and product quality, the mixing process is simple and easy to operate, and batch stability and high production efficiency of the feed can be ensured.

The invention relates to LiFePO4/CG (carbon gel) compounded anode material and a preparation method thereof, and belongs to the technical field of lithium ion battery material preparation. The preparation method comprises the following steps: adopting a liquid phase synthesis-microwave solid phase sintering method; weighing a certain amount of lithium source, iron source and phosphorous source according to the Li:Fe:P molar ratio of (0.9 to 1.2):(1.0 to 1.1):(1.0 to 1.1), and dissolving the lithium source, iron source and phosphorous source in deionized water to prepare a mixed suspension; adding a certain amount of CG (carbon gel) and surfactant to form a suspension through stirring; drying the suspension to obtain a powdery precursor; and obtaining the LiFePO4/CG (carbon gel) compounded anode material after the grinding and microwave sintering of the powdery precursor . The technical method has the advantages of simple process, low energy consumption, greenness and no pollution, easily controlled process, and the like. The prepared lithium ion battery compounded anode material has high purity, small primary grain size, and stable electrochemical properties under the condition of high magnification charge and discharge.

An intelligent arrangement and assembly method of the feature numbers based on radiation units comprises the following steps: A) grouping the radiation units to be assembled, photographing and measuring the radiation units one by one, numbering the radiation units one by one, and calculating a required mouth edge center distance and a mouth edge margin; B) sequencing, numbering and marking serialnumbers of to-be-assembled arrangement positions on a radiation unit array assembly bottom plate; C) enabling an upper computer to carry out radiation unit assembling arrangement planning; D) enablingthe upper computer to determine a radiation unit arrangement planning optimization result; and E) enabling a robot to automatically and intelligently arrange the radiation units according to the position serial number of the bottom plate, the arrangement planning optimization result and the feature numbers and assemble the radiation units into an array according to the output data of the upper computer. The one-time assembly success rate and the efficiency of the whole assembly process are improved, the assembly preparation period is greatly shortened, and the assembly precision and consistency of the radiation unit are greatly improved; and completely efficient and automatic operation can be achieved for large-scale radiation unit array arrangement and assembly which are difficult to achieve by manpower.

The present invention provides an adhesion sheet, which comprises, by mass, 25-65 parts of a matrix resin, 20-60 parts of a fiber reinforcement body, 10-40 parts of a filler, and 0-15 parts of a flameretardant, wherein the matrix resin comprises, by mass, 20-70 parts of modified polyphenylene ether, 30-70 parts of a polydiolefin type polymer, and 0-5 parts of an initiator. The present invention further provides a preparation method of the adhesion sheet, and a copper clad laminate using the adhesion sheet. According to the present invention, the heat resistance of the adhesion sheet and the copper clad laminate can reach more than 200 DEG C, such that the problems of defects, delamination and the like generated in the processing of the multilayer copper clad laminate due to insufficient heat resistance of the adhesion sheet can be solved; the fluidity of the adhesion sheet is maintained at 5-15%, such that the sufficient flowing and filling of the resin in the preparation process of the multi-layer copper clad laminate can be ensured, and the quality and the batch stability of the product can be ensured; and the cured adhesion sheet has low dielectric loss so as to meet the needsof the future high frequency field.

The invention discloses a device for preparing super-capacitor activated carbon by an alkali activation method and a preparation method of the super-capacitor activated carbon. A preparation method ofsuper-capacitor activated carbon belongs to the technical field of super-capacitor carbon preparation, and comprises the following steps: uniformly mixing a carbonized material and an activator, adding into a feeding unit, reacting in a furnace body, conveying through a driving unit to obtain an activated material, washing and drying the activated material to obtain the super-capacitor activatedcarbon. The invention has the following advantages: 1, the wedge-shaped paddle stirring shaft in the furnace body can make the carbonized material and the activator mixed more uniformly, thereby ensuring the batch stability of the product; 2, the relative movement of the material particles in the furnace body and the wedge-shaped surface generates a washing effect, materials attached to the wedge-shaped surface can be washed off, and the wedge-shaped blades have a self-cleaning function, so that the materials are prevented from being adhered to the stirring shaft of the wedge-shaped blades, the materials are prevented from being adhered to the furnace wall, normal discharge in the activation process is ensured, and continuous production of activation is realized.

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 provides a liver-like tissue structure as well as a preparation method and application thereof. The cell phenotypes in the liver tissue-like structural body are highly consistent, and are uniformly dispersed in the whole structure in the form of small-size cell clusters. The liver tissue has a highly bionic physiological function, not only positively expresses symbolic genes and proteins of mature liver tissues, but also has higher physiological functions of albumin secretion, nitrogen metabolism, urea synthesis, detoxification, drug metabolism and the like. According to the preparation method of the liver tissue-like structural body, cells from various sources can be adopted, and customized design and batch production can be realized according to requirements. The liver tissue-like structural body disclosed by the invention is a liver model with wide application, and is used in the fields of liver tissue development research, liver tissue regeneration research, liver disease occurrence and development research, preclinical drug detection, new drug test and development, drug toxicology research and the like.

The invention relates to a water-based 5G agglomerated stone imitation coating and a preparation method thereof. The coating is composed of a pigment part, a granulation intermediate with lubrication, isolation and protection functions, and latex paint with film forming and weather resistance. The preparation method comprises the following steps: (1) preparing base paint; (2) preparing a granulation intermediate; (3) preparing latex paint; and (4) preparing the water-based 5G agglomerated stone imitation coating: mixing the base paint with color paste for color mixing to form a pigment part, then coating the pigment part with the granulation intermediate, performing granulation through a screen under pressure, then adding the latex paint, conducting mechanical stirring and uniform blending, and conducting standing for reaction to obtain the water-based 5G agglomerated stone imitation coating. Compared with the prior art, the stone imitation coating is specially used for replacing a conventional stone imitation coating in appearance, is different from water-based colorful building paint in structural composition, is not higher than the conventional stone imitation coating in engineering price, and is superior to both stone-like paint and water-based colorful building paint in cost performance.

The invention provides a dip-coating device which is convenient to operate and stable and uniform in dip-coating layer, in particular to a small insulator dip-coating device which can be used in a transformer substation. The device comprises a protection frame, a motor fixedly connected to the protection frame, a transmission mechanism arranged at the upper end of the protection frame, a materialstorage tank arranged at the lower end of the protection frame, a lifting mechanism for driving the material storage pool to ascend and descend, and an insulator fixedly connected to the transmissionmechanism; the motor drives the transmission mechanism to move; the protection frame comprises a vertically-through shell and supporting feet arranged at the lower end of the shell; the material storage tank is arranged in a cavity of the shell; and the transmission mechanism drives the insulator to rotate and revolve. The small insulator dip-coating device is simple in mechanical structure and few in power source, the production cost is greatly reduced, in addition, automation is achieved in the dip-coating process, manual operation is not needed, and the small insulator dip-coating device has the advantages of being convenient to operate and high in production efficiency.