13results about How to "Guaranteed batch stability" patented technology

The utility model relates to the technical field of dry method electrode preparation, in particular to feeding equipment and an electrode preparation device. The feeding equipment comprises a stock bin, a charging barrel, a feeding screw rod, a pre-pressing screw rod, a first driving unit, a second driving unit, a torque monitoring piece and a controller, the stock bin is communicated with the charging barrel; the feeding screw rod is arranged in the stock bin, and the first driving unit drives the feeding screw rod to rotate so as to convey materials in the stock bin into the charging barrel; the pre-pressing screw rod is arranged in the charging barrel, and the second driving unit drives the pre-pressing screw rod to rotate so as to convey materials entering the charging barrel to the output end of the charging barrel. And through the arrangement mode that the double screws are matched with the double driving units, the conveying efficiency of the materials can be improved. And the torque monitoring part and the controller are matched with the second driving unit with the adjustable torque to adjust the rotating speed of the pre-pressing screw rod, so that the pressure between the discharging end of the charging barrel and the subsequent pressing roller assembly is constant, and the uniformity, the surface density consistency and the batch stability of the subsequently prepared membranes are ensured.

The invention relates to a fabric low-pressure friction processor and a processing method thereof. Most of existing fabric frictioning and vulcanizing processes are completed manually, and the production efficiency, the batch stability and the product quality are low. The device comprises an unwinding device, a three-roller calender, a needle plate chain transmission device, a hot drying tunnel, an automatic winding device and an electrical control system, the unwinding device is arranged on one side of the three-roller calender, one end of the needle plate chain conveying device is arranged between the three-roller calender and the hot drying channel, the other end of the needle plate chain conveying device penetrates through the hot drying channel to be arranged in the automatic winding device, and the hot drying channel is arranged on the outer side of the middle of the needle plate chain conveying device. And the three-roller calender is of an F-shaped structure. According to the invention, the technological processes of automatic fabric feeding, automatic frictioning, automatic transmission, automatic vulcanization and automatic winding can be realized, and the production efficiency, the batch stability and the product quality can be improved.

The application discloses a kind of biocompatible materials and preparation method for bionic porous intervertebral fusion cage, belong to intervertebral fusion cage material technical field.A kind of biocompatible materials for bionic porous intervertebral fusion cage, by weight parts includes the following components: polyether ether ketone 65-80 parts, modified functional filler 15-25 parts, hydroxyapatite 8-12 parts, flow modifier 0.5-1 part;The modified functional filler is graphene oxide coated modified barium titanate functional filler.By introducing surface conductive modified nano piezoelectric ceramic particles, realize the effective conversion and transmission of mechanical stimulation to bioelectric signal, this microstructure design makes the insulating polyether ether ketone matrix possess the electric activity of simulating natural bone stress-electric signal response mechanism, so as to be favorable to activate osteoblast activity and promote bone integration of implant interface.

This invention provides a lithium titanium dioxide sodium phosphate anode material and an aqueous lithium-iodine battery based thereon, belonging to the field of secondary battery technology. The chemical formula of the lithium titanium dioxide sodium phosphate anode material is Li. x Na y Ti2(PO4)3, where 0

The invention relates to a gluing tool for a soft material, the gluing tool comprises a glue melting unit and a glue rolling unit, the glue melting unit comprises a glue melting machine, the glue melting machine is communicated with the glue rolling unit, the glue melting machine is used for heating solid glue into liquid glue, the glue rolling unit comprises a roller assembly and a conveying assembly, and the roller assembly is communicated with the conveying assembly. The roller assembly is arranged above the conveying assembly, the conveying assembly is used for conveying a soft material to the position below the roller assembly, and the roller assembly is used for coating the surface of the soft material with liquid glue. Compared with the prior art, the gluing tool provided by the invention is small in occupied area, convenient to move, capable of quantitatively adding glue at fixed time and controllable in glue amount; and the gap adjusting unit is arranged, so that the difficulty of process adjustment is reduced.

The application relates to a preparation method of a three-layer integrated brake disc. The setting of the annular spacer can effectively avoid mutual invasion of the disc body friction material and the disc cap structure material in the powder filling process; the pre-pressing punch is used to press a surface which is basically the same as the inner surface before mold closing and pressing, so that the problem that the upper mold pressing surface is in contact with the uneven powder surface and is easy to cause the powder to be scattered can be effectively avoided; the above steps are coordinated, the disc body friction material and the disc cap structure material are in their respective positions, the interface consistency of the three-layer integrated brake disc can be effectively ensured, so that the performance of the disc body and the disc cap is ensured, and the batch stability is ensured.

The present invention provides a method for preparing N-acetamido glucose based on enzymolysis technology, which belongs to the field of biochemical technology. The method comprises the following steps: (1) chitin and water in a mass ratio of 1:8-10 are mixed, chitinase is added, and enzymolysis is performed. After the enzymolysis is completed, the enzyme is inactivated to obtain a first enzymolysis product; (2) chitosanase is added to the first enzymolysis product, and enzymolysis is performed. After the enzymolysis is completed, the enzyme is inactivated to obtain a second enzymolysis product; (3) β-glucosidase is added to the second enzymolysis product, and after the enzymolysis is completed, the enzyme is inactivated to obtain a third enzymolysis product; (4) the third enzymolysis product is purified and dried to obtain N-acetamido glucose. The N-acetamido glucose prepared by the present invention has high purity and yield, good batch stability, low cost, and is convenient for industrial production.

The invention relates to the field of medical instruments, and discloses a CGM working electrode and a preparation method thereof. The working electrode comprises a flexible base layer, a metal conductive layer, a catalytic reaction layer, a surface modification layer, a biological enzyme sensing layer and a hydrophilic and hydrophobic semipermeable membrane layer which are sequentially stacked, wherein the surface modification layer forms a three-dimensional network structure on the surface of the catalytic reaction layer through silanization treatment and is used for enhancing biological enzyme immobilization; the semi-permeable membrane layer is composed of biocompatible polymers and used for selectively controlling permeation of glucose molecules. By the adoption of the technical scheme, the biocompatibility and measurement precision of the electrode are improved, the service life of the electrode is prolonged through the special structural design, and the electrode is simple in preparation process, controllable in cost and suitable for industrial popularization.

The invention provides a preparation technology of a GH4738 alloy special-shaped wire, which comprises the following specific technological processes: smelting, forging, hot rolling, repeated cold drawing annealing and finished product heat treatment, and is characterized in that the forging and hot rolling temperature is 1050-1150 DEG C, and the deformation amount per heating number is 4-70%; carrying out cold drawing at room temperature; the annealing temperature in the intermediate annealing process between every two passes of cold drawing of the wire is 1050-1070 DEG C, and the heat preservation time is 1.5 h; the hot-rolled round wire is cold-drawn into the special-shaped wire material for five passes; large deformation is adopted for rolling of the first pass and the second pass, the rolling deformation is controlled to be 32%-39%, and the rolling deformation of the third pass to the fifth pass is controlled to be 5%-26%. And hydrogen protection annealing heat treatment is carried out after the finished product is finished, and the heat treatment temperature is 1050-1080 DEG C. The method has the advantages that the batch stability of the wires is guaranteed, and matched use of model engines is facilitated. And meanwhile, the wire produced by the process is good in surface quality, and the process is simple and easy to operate.

The invention relates to a preparation method of a three-layer integrated brake disc. Through arrangement of an annular spacer, mutual invasion of a disc body friction material and a disc cap structure material in the powder filling process can be effectively avoided; before mold closing and pressing, the surface roughly the same as the inner surface is pressed through the pre-pressing punch, and the problem that the pressing face of the upper mold makes contact with the uneven powder surface, and powder is likely to be scattered can be effectively solved; the steps are coordinated, so that the friction material of the disc body and the structural material of the disc cap are respectively arranged in place, the interface consistency of the three-layer integrated brake disc can be effectively guaranteed, the performance of the disc body and the performance of the disc cap are guaranteed, and the batch stability is also guaranteed.

This invention relates to the field of proton exchange membrane (PEM) preparation technology, and discloses a modified PAN and quercetin-doped sulfonated polyaryletherketone (PAEK) PEM, its preparation method, and its applications. The method includes the following steps: synthesizing sulfonated PAEK via monomer copolymerization; obtaining modified PAN by carboxyl modification of polyacrylonitrile (PAN); and then blending SPAEK, modified PAN, and quercetin to form a membrane. In this invention, the cyano groups of the modified PAN form an acid-base crosslinking network with the sulfonic acid groups of SPAEK to inhibit swelling, and its carboxyl groups participate in proton conduction; the polyphenolic hydroxyl groups of quercetin construct a hydrogen bond network to enhance structural density and act as a free radical scavenger to improve antioxidant stability. This invention, through the synergistic effect of the three components, successfully solves the technical problems of SPAEK membranes, such as difficulty in balancing proton conductivity and dimensional stability, and poor antioxidant performance. The resulting composite membrane possesses high proton conductivity, low swelling rate, and excellent oxidation stability, making it suitable for vanadium redox flow batteries.

The invention relates to a forging method of an ultra-long two-phase titanium alloy forged plate. The forging method comprises the steps of high-temperature cogging forging, recrystallization forging, homogenizing forging and pre-forming forging and forming forging. According to the method, a reversing drawing-out process is introduced in the high-temperature cogging and low-temperature preforming processes, so that uniform deformation of the interior of a material is effectively promoted, the mechanical properties of a forged plate in the length direction, the width direction and the thickness direction reach high consistency, and meanwhile, the mechanical properties of the forged plate in the length direction, the width direction and the thickness direction are greatly improved. And the temperature, deformation, pressing speed and other parameters in the forging process are precisely controlled, forging defects are reduced, the yield is further improved, the production efficiency is improved through the whole process, the production cost is reduced, the batch stability of forged plates can be guaranteed, and the requirements of the aerospace field and other fields for high-performance titanium alloy forgings are met.

The invention relates to the technical field of titanium alloy sheet preparation, and discloses a symmetrical cold rolling preparation method of a titanium alloy sheet, which comprises the following steps: preparing a blank, and carrying out multi-heating-number hot rolling on the blank to obtain a semi-finished sheet; the semi-finished plate is symmetrically arranged on a roller in the rolling direction, reverse symmetrical tension is applied to the two ends of the semi-finished plate through a clamp, and the tension on the two sides is symmetrically and progressively decreased based on the pass interval; symmetrical cold rolling is conducted on the semi-finished plate, and the deformation rate of the cold rolling process is controlled to be 0.6-0.85 time of the limit deformation rate of the plate; and the cold-rolled plate is subjected to roller hearth furnace annealing and press-straightening treatment, and a finished titanium alloy plate is obtained. Compared with a thin plate prepared through a traditional cold rolling process, the same plate difference of finished products is reduced by 58%, the problem that the thin plate is locally thick, especially the middle is thick is solved, the thickness precision qualification rate is high, and the requirement for the high-precision titanium alloy thin plate in the civil field is met.