8results about How to "Guaranteed batch stability" patented technology

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 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.

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 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.