35results about How to "Improve the problem of easy falling off" patented technology

The invention provides a square lithium ion battery winding cell and a manufacturing method for the same. The square lithium ion battery winding cell comprises a positive pole piece, a diaphragm and a negative pole piece, wherein the positive pole piece is provided with a positive tab; the negative pole piece is provided with a negative tab; an internal supporting frame is arranged in the center of the square lithium ion battery winding cell. By the adoption of the technical scheme, the problems of easy deformation of pole pieces of a conventional square winding cell in charge-discharge cycles and easy disengagement of materials at semicircular positions of the bent pole pieces are solved, the consistency of a square lithium ion battery in a static state and a charge-discharge cycle dynamic state is maintained to the greatest extent, the production qualification rate of winding cells and the safety of the square lithium ion battery are improved, and conditions are created for reliable application of the square winding cell to the field of power batteries.

The invention provides a flexible Laplacian electrode for detecting a physiological electric signal, and belongs to the technical field of medical apparatuses. A flexible circuit is designed, a Laplacian electrode structure is embedded to a flexible substrate, and the Laplacian electrode is mainly composed of the flexible substrate, the Laplacian electrode structure and a connecting line. The physiological signal acquisition electrode can be randomly folded and bent, is of the Laplacian structure, is flexibly attached to the skin without gaps and does not easily fall.

The invention discloses a conductive film replacing aluminum foil, and a preparation method thereof. The conductive film replacing aluminum foil comprises metal layers, middle reinforcing layers and apolymer film layer, wherein the middle reinforcing layers are arranged on the two sides of the polymer film layer, the metal layers are arranged on the outer sides of the middle reinforcing layers, the surface sheet resistance of the conductive film is 10-80 m omega, the tensile strength is 150-350 Mpa, the elongation at break is 75-150%, the elastic modulus is 3500-5500, the binding force between the middle reinforcing layer and the metal layer is greater than 2 N/15 mm, the binding force between the polymer film layer and the middle reinforcing layer is 2-4 N/15 mm, the water vapor transmission rate is less than 0.2 g/(m<2>.24 h), and the oxygen transmission rate is less than 0.005 cm <3>/(m<2>.24 h). According to the invention, the conductive film replacing the aluminum foil can be made to be very light and thin, the thickness is 3-20 microns, meanwhile, a plating layer is high in binding force, not prone to oxidation and falling, high in barrier property and good in conductivity,the conductive film has the advantages of being light, thin, high in strength and good in toughness, and the problems that pure aluminum foil is large in hardness and tension strength, small in tearing strength, extremely easy to tear, high in cost, large in weight and the like are effectively solved; and the conductive film can be used for replacing the traditional aluminum foil to be applied tothe fields of optical films, thermal protection coatings, shielding films, high-end food/medicine/cosmetic packaging with better barrier property requirements, electronic devices, batteries and the like.

The invention discloses a preparation method of a metal ceramic composite material. The method comprises the following steps: (1) sequentially carrying out crushing, ultrasonic cleaning and drying onfoamed SiC ceramic according to the procedures of primary crushing, secondary crushing and tertiary crushing to obtain an ellipsoidal SiC ceramic block with the size of 2 mm to 15 mm; (2) carrying outpre-oxidation, pre-corrosion and cleaning on the ellipsoidal SiC ceramic block obtained in the step (1) to obtain a foamed SiC ceramic reinforcement; and (3) mixing the foamed SiC ceramic reinforcement obtained in the step (2) with metal, putting the mixture into a mold, performing heating and applying pressure in a nitrogen atmosphere, performing cooling, solidifying, demolding and polishing toobtain the metal ceramic composite material.

The invention relates to a preparation method of a zinc oxide-hydroxyapatite composite anticorrosive pigment, which comprises the following steps: adding calcium chloride powder and urea into a disodium hydrogen phosphate dodecahydrate solution, ultrasonically mixing uniformly, carrying out hydrothermal reaction in a reaction kettle, washing and drying to obtain flaky hydroxyapatite powder; the preparation method comprises the following steps: uniformly stirring hydroxyapatite powder in deionized water, sequentially adding zinc acetate dihydrate and sodium hydroxide, ultrasonically mixing uniformly, carrying out hydrothermal reaction in a reaction kettle, washing and drying to obtain the zinc oxide-hydroxyapatite composite anticorrosive pigment. According to the invention, nano-zinc oxide and hydroxyapatite are compounded into the anti-corrosion pigment, so that the problems that a nano-zinc oxide coating is easy to fall off and a hydroxyapatite coating is poor in anti-corrosion performance are solved, the adhesion performance of the coating and metal is improved, the porosity of the coating is reduced, chloride ions are cured, and synergistic corrosion prevention is realized.

The invention discloses a high temperature-resistant micro-expansive caulking mud and a preparation method thereof. The preparation method comprises the following steps: step 1, dissolving sodium bicarbonate powder in water and taking a saturated solution of the dissolved sodium bicarbonate as an expanding agent; step 2, separately grinding 50 to 60% of bauxitic clay clinker, 20 to 30% of clay, 10 to 20% of fine slag powder and 2 to 6% of alum to respective standard particle size ranges; and step 3, adding the expanding agent solution containing 1 to 3% of sodium bicarbonate into bauxitic clay clinker, clay, fine slag powder and alum and carrying out stirring. With such a technical scheme, defects of secondary pollution, easy falling and high cost of conventional stemming caulking technology are overcome, and the caulking mud provided by the invention has high strength and can meet requirements on caulking of joints of cover plates. The production cost of the caulking mud provided by the invention is 1/3 of the production cost of the stemming, so blast furnace production cost is reduced; moreover, the caulking mud does not cause secondary pollution, thereby substantially promoting environmental protection.

The invention provides a polyamide hollow fiber nanofiltration composite membrane and a preparation method thereof. The preparation method comprises the following steps: 1, activating a polyamide hollow fiber ultrafiltration membrane to form carboxylic acid groups and amino groups on the surface of the polyamide hollow fiber ultrafiltration membrane; 2, putting the activated polyamide hollow fiberultrafiltration membrane into a polyamine aqueous solution; 3, taking out the polyamide hollow fiber ultrafiltration membrane from the polyamine aqueous solution, and putting the polyamide hollow fiber ultrafiltration membrane into a polyacyl chloride organic solution, wherein an interfacial polymerization reaction is generated on the surface of the polyamide hollow fiber ultrafiltration membraneto form a separation layer; and 4, taking out the polyamide hollow fiber ultrafiltration membrane with the separation layer from the polyacyl chloride organic solution, and carrying out heat treatment on the polyamide hollow fiber ultrafiltration membrane to obtain the polyamide hollow fiber nanofiltration composite membrane. By utilizing the method, the structural defects of the membrane separation layer can be effectively reduced, the connection tightness between the base membrane and the separation layer is enhanced, and the use performance of the membrane is improved.

The invention discloses a preparation method of a lithium ion imprinting composite nanofiber membrane based on MOFs (Metal-Organic Frameworks), relates to the field of ion imprinting membrane preparation methods, and in particular relates to a method for combining MOFs and an ion imprinting technology. The invention aims to solve the problems that a large amount of dangerous organic solvents are used, the cost is high, the influence on the environment is great, the adsorption effect is poor, and high-selectivity removal of target pollutants in a complex system cannot be realized in the conventional method for loading MOFs on nanofibers. The method comprises the following steps: 1, preparing a high-selectivity Li < + > imprinted polymer; 2, preparing a polyacrylonitrile nanofiber membrane; and 3, preparing the MOFs-Li < II > Ps (at) PAN by a hydrothermal method, so as to obtain the lithium ion imprinted composite nanofiber membrane based on the MOFs. The lithium ion imprinted composite nanofiber membrane based on the MOFs prepared by the preparation method disclosed by the invention has the advantage that the adsorption capacity of the lithium ion is as high as 99.99%. The lithium ion imprinted composite nanofiber membrane based on the MOFs can be obtained by the preparation method disclosed by the invention.

The invention discloses a semiconductor structure and a forming method thereof. The semiconductor structure comprises a substrate, wherein the surface of the substrate is provided with a groove. The groove is exposed out of the surface of a metal layer. A metal bump is positioned on the surface of the metal layer and on the partial surface of the substrate. The shape of the cross section of the metal bump is the same as the shape of the cross section of the groove. The vertical distances between the sidewalls of the metal bump and the sidewalls of the groove are the same. The metal bump in the semiconductor structure is not easy to break or fall off.

The invention relates to a method for manufacturing a quick heat conduction pot. The method is mainly characterized in that a heat conduction disc is combined with the bottom of the metal (stainless steel) pot, the heat conduction disc and the pot are combined through friction fusion or a friction punch press, the heat conduction disc which is in a non-planar shape or with shapes is formed, the manufacturing speed is high, disengagement never happens, multiple defects of a traditional bonding mode can be overcome, multiple machining procedures are simplified, cost is reduced, the rejection rate is avoided, and the method has the advantages of being advanced and practical.

The invention relates to an automobile battery shell rubber coating material, and a preparation method thereof. The material comprises components with the following parts by weight: 60-90 parts of a thermoplastic elastomer, 5-25 parts of a melt-blown polymer, 5-30 parts of a flame retardant, 0-20 parts of a filler, 1-20 parts of an interface modifier, 0.5-12 parts of a foamer, 1-10 parts of a foaming synergist, 0.5-2 parts of a lubricant, and 0.2-1 part of an antioxidant. The invention further discloses the preparation method of the automobile battery shell rubber coating material. The automobile battery shell rubber coating material and the preparation method thereof have the advantages that through high fluidity and extremely high machining formability, a complex battery shell structurecan be accurately replicated, the material can be effectively adhered to the battery shell structure, and the product wall thickness can be optimally reduced, so that high product portability is achieved; the material can be effectively bonded with a metal or engineering plastic shell, so that the problem of high dropping possibility of the conventional market product is effectively solved, and better buffering protection effects for a battery are achieved; and the material has excellent low-temperature-resistant, buffering and flame-retardant performances, so that such problems as unsatisfactory low-temperature falling ball impact performance and unsatisfactory shock-resistant performance of the conventional market product are solved.

The invention discloses a matched signal collection suction ball of a novel ECG machine and belongs to the technical field of medical appliances. The signal collection suction ball comprises a soft ball, wherein a metal side skirt is fixedly connected to the bottom of the soft ball, the soft ball communicates with inside of the metal side skirt, a rubber side skirt is fixedly connected to the outer edge of the bottom of the metal side skirt, a fixation ring is fixedly connected on the outer side wall of the metal side skirt and a metal interface is inserted in the fixation ring, and the metalinterface is fixedly connected to one end of a wire. An internal metal patch can get close to skin under effects of a spring on a metal side skirt support, elastic force of the spring is very small and only applied to fitting with the surface of a patient, the elastic force of the spring is smaller than suction force of the soft ball, the whole body is prevented from being ejected by the spring and then falling down, the rubber side skirt is used for improving problems in easy stripping, red marks and plaques, the spring is used for solving the problem that electric signal collection is unstable, and the wire and the external interface are used for solving the problem that existing wires are too hard.

The invention provides a manufacturing method of a glass-like protective film. The manufacturing method comprises the following steps: cutting a roll material into a sheet; coating the surface of thesheet with an adhesion layer by a first processing means; arranging a material layer on the adhesion layer by a second processing means; arranging a pattern layer on the material layer by a third processing means to form a processed sheet; forming a film sheet from the processed sheet by a cutting means; carrying out injection molding on the film sheet to form a semi-finished product; and performing a trimming means on the semi-finished product to obtain a protective film finished product, so that the protective film finished product with an imitation material effect is formed through the material layer and the pattern layer.

The invention discloses a foot pad anti-falling structure. The foot pad anti-falling structure comprises a foot pad main body and an equipment base shell for placing the foot pad main body; and the foot pad main body is connected to the bottom of the equipment base shell through a tight connection reinforcing mechanism, and a gum layer is arranged between the top surface of the foot pad main bodyand the bottom of the equipment base shell. The foot pad anti-falling structure is convenient and reliable to assemble, a foot pad can be limited in the X direction, the Y direction and the Z direction through a mechanical mechanism and a local gum fixing mode, the foot pad is firmly installed at the bottom of the equipment base shell, it is guaranteed that the foot pad is used for a long time andnot prone to falling off, the problem that a foot pad at the bottom of equipment is prone to falling off is effectively solved, and the foot pad is prevented from falling off from the root position.

The invention provides a decorative wall panel and a mounting method, and relates to the technical field of building decoration. The decorative wall panel comprises a decorative surface layer and a structural layer. The structural layer is a high-performance cement-based material plate, serves as a base layer of the decorative surface layer, is arranged on the lower layer of the decorative surface layer and is relatively fixed to the decorative surface layer. According to the decorative wall panel, the decorative surface layer and the structural layer formed by the high-performance cement-based material plate are combined, and thus the decorative wall panel can be quickly formed; and dry construction can be conducted by combining the decorative wall panel with the corresponding mounting method, material waste is reduced, the construction efficiency is improved, and the flatness of a decorative surface can further be guaranteed. In addition, some traditional decorative sheets needing to depend on wet construction can be allowed to be subjected to dry construction, the using range is wide, later maintenance is also convenient, construction waste can further be reduced, and environmental protection is also facilitated.

The invention provides a method for manufacturing a protective film. The method comprises the following steps of: cutting a roll material into a sheet; coating the surface of the sheet with a releaselayer through a processing means to form a processed sheet; forming a film sheet from the processed sheet by a cutting means; carrying out injection molding on the film sheet to form a semi-finished product; and performing a trimming means on the semi-finished product to obtain a protective film finished product. With the method, a high-precision protective film finished product is formed throughinjection molding.