36results about How to "Combined fastening" patented technology

The present invention provides a method for preparing a metal-organic framework compound by using a Co-containing metal-organic framework compound (Metal-Organic Framework, the invention relates to acomposite material formed by loading one-dimensional rod-like Co3V2O8 on a porous carbon box (PCB) obtained by MOF pyrolysis, a preparation method of the composite material and an application of the composite material in a lithium ion battery negative electrode material. The preparation method disclosed by the invention comprises the following steps: preparing a zeolite imidazate skeleton-67 (Zeolitic Imidazolate Frameworks-67, ZIF-67) with a controllable morphology; the preparation method comprises the following steps: taking Co3V2O8 as a template precursor, carrying out high-temperature pyrolysis, carrying out acid pickling to remove Co, carrying out ultrasonic dispersion on the obtained porous carbon box in a solution, carrying out self-assembly by taking the porous carbon box as an internal skeleton through a hydrothermal process, and adhering Co3V2O8 to the surface of the porous carbon box and embedding Co3V2O8 into pores to form the composite material. The whole experiment process does not generate toxic and dangerous substances, the operation is simple and easy to implement, the Co3V2O8-coated PCB has a high specific surface area and a porous structure, the multiplying powerand the cycle performance of the lithium ion battery are effectively improved through the synergistic effect of the composite material, and the Co3V2O8-coated PCB is an excellent lithium ion batterynegative electrode material.

The invention particularly discloses breathable three-dimensional shoe upper structures. Each breathable three-dimensional shoe upper structure comprises a mesh fabric base layer, a mesh fabric surface layer, and a three-dimensional offset printing layer and a bonding layer which are located between the mesh fabric base layer and the mesh fabric surface layer. Each three-dimensional offset printing layer sequentially includes, from bottom to top, an oily varnish layer, a water-based solid gold oil layer, a foaming paste layer and a dot printing layer. Each three-dimensional offset printing layer covers a part of the respective mesh fabric base layer. Each mesh fabric surface layer is in hot press connection with the respective mesh fabric base layer and the respective three-dimensional offset printing layer through the respective bonding layer respectively. The invention also discloses a process for making the breathable three-dimensional shoe upper structures. According to the technical scheme, not only are seam-less integrated shoe uppers achieved, but also a strong three-dimensional decorative feeling of the non-topmost layers of the shoe uppers is formed, and the shoe upper structures have stereotyped supporting effects on the entire shoe uppers, so that the shoe uppers have good tightness and attractive appearance. Printing patterns can be observed directly through the mesh fabric surface layers, the layers of the shoe uppers are firmly bonded, and shoes are firm and wearable.

The invention discloses a composite nano-silver antiviral agent as well as a preparation method and application thereof, and belongs to the technical field of health protection. The problems that in the prior art that a nano-silver antiviral agent is low in stability and timeliness; and existing cloth is poor in antiviral property are solved. The composite nano-silver antiviral agent is prepared from the following raw materials: an ester-based quaternary ammonium salt cationic surfactant, dodecyl trimethyl ammonium chloride, nano-silver sol, polyethylene glycol and water. The preparation method of the composite nano-silver antiviral agent comprises the following steps: weighing the raw materials for preparing the composite nano-silver antiviral agent according to the mass ratio; equally dividing water into two parts; preparing a first mother solution; preparing a second mother solution; and mixing and stirring the first mother liquor and the second mother liquor to obtain the compositenano-silver antiviral agent. The composite nano-silver antiviral agent has long-acting and stable bactericidal and antiviral effects, can improve the antiviral property of non-woven fabrics when applied to the non-woven fabrics, and is harmless to human bodies, safe and reliable.

The invention provides a resin ceramic wear-resistant composite material and a preparation method thereof. The method comprises the steps: firstly, respectively preparing a polyurethane prepolymer, an epoxy resin component and a curing agent component; then premixing silicon carbide and brown fused alumina filler, and then mixing with a polyurethane prepolymer, an epoxy resin component, a curing agent component, a silane coupling agent, a dispersing agent and a defoaming agent to obtain a castable of the composite material; and finally, injecting the castable into a mold, curing and molding, and demolding to obtain the resin ceramic wear-resistant composite material. The mass fraction of the composite material ceramic filler prepared by the method can reach 87%, the composite material is firmly combined with an embedded part, cracks caused by stress are avoided, the composite material is particularly suitable for manufacturing flow passage components of large transmission equipment, and the prepared wear-resistant composite material flow passage component has the service life in the same working condition environment up to 8 times or more of that of a traditional high-chromium alloy material flow passage component.

The invention discloses an elastic buckling device and a packaging carrier thereof. The elastic buckling device is intended for engaging and fixing a first object and a second object. The elastic buckling device includes a buckling seat, a buckling part and an elastic piece. The buckling seat has an assembly part which is intended for engaging the first object. The buckling part is arranged on the buckling seat and is intended for installing the buckling piece so as to secure the second object to the buckling seat. The elastic piece is arranged on the buckling seat and abuts against the buckling seat and the second object. According to the invention, the elastic buckling device is applied to detachable or fixed engaging and assemblies among different objects, enables the second object, the buckling piece and the buckling seat to be more secured, and has the effects of vibration reduction and loosening prevention.

The invention provides high-density and high-stripping deer fiber velvet synthetic leather, and relates to the field of deer fiber velvet synthetic leather. The high-density and high-stripping deer fiber velvet synthetic leather comprises a base cloth layer, a dry polyurethane layer is arranged on the upper end face of the base cloth layer, an elastic layer is arranged on the upper end face of thedry polyurethane layer and comprises an elastic surface skin layer and an internal cavity layer, the dry polyurethane layer and the elastic layer are provided with air holes structures, the upper endof the elastic layer is coated with a nano organic fluorine-silicon film layer, a waterproof film is arranged on the upper surface of the nano organic fluorine-silicon film layer, and a hand feelingtreatment layer is arranged on the upper surface of the waterproof film. According to the high-density and high-stripping deer fiber velvet synthetic leather, through research on the deer fiber velvetbase cloth layer and the dry polyurethane layer, the synthetic leather has good air permeability, moisture penetrability, softness and elasticity and is resistant to abrasion and scratching; and through arrangement of the elastic layer, the tensile effect and the ductility of the synthetic leather are better while the softness and the elasticity of the synthetic leather are ensured, the whole high-density and high-stripping deer fiber velvet synthetic leather is very similar to real leather from the appearance hand feeling to the internal structure, all properties of the synthetic leather areimproved, and practicability is high.

The invention relates to a gauze fabric prepared from fibers with a mosquito repelling function and a preparation process thereof. The gauze fabric is formed by weaving warp yarns and weft yarns; thewarp yarns are obtained by spinning the fibers with the mosquito repelling function; the weft yarns are obtained by blending polyurethane fibers and cotton fibers; and the fibers with the mosquito repelling function are prepared by taking polyester fibers as a framework material, polyhydroxyalkanoate microspheres as a reinforcing material and a plant extract as a functional material. According tothe gauze fabric prepared from the fibers with the mosquito repelling function and the preparation process thereof provided by the invention, the fibers with the mosquito repelling function is particularly added, so that the fabric not only has a mosquito preventing or decorating effect, but also has a relatively strong mosquito repelling effect. The gauze fabric provided by the invention adopts non-toxic and pollution-free materials, and is easy to prepare and suitable for being widely used indoors; and the preparation process is simple and convenient, easy to operate and suitable for popularization and application.

The invention discloses a water-saving and energy-saving processing technology of a polyester fabric, which comprises the steps of selecting raw materials of polyester yarns - dyeing yarns - winding yarns - weaving and cutting, and selecting high-density NC polyester yarns as raw materials of the polyester fabric. By means of the technology, the beneficial effects comprises: compared with the traditional method for integrally printing and dyeing the polyester fabric, the method of printing and dyeing is more comprehensive for polyester fabric , the polyester fabric is dyed by the dye solution,the process flow of dyeing the polyester fabric is reduced, the printing and dyeing efficiency is improved, by printing and dyeing a plurality of polyester yarns respectively, the dyeing solution consumption of the mechanism is less, so that the process is more energy-saving, water-saving and cost-saving when dyeing the polyester yarns; and the dye solution used for spraying and dyeing can flow into the packing groove by improving the sleeve groove, and the packing groove guides the dye solution into the dye solution refilling bucket, so that people can conveniently collect and process the dye solution which is not attached and dyed with the polyester yarns filament, thereby ensuring the environmental protection and saving printing and dyeing cost.

The invention discloses a high-strength thermal-insulation composite board for buildings and a preparation method thereof, and belongs to the technical field of building materials. The preparation method comprises the following steps: reacting bamboo charcoal fibers with potassium permanganate in concentrated sulfuric acid, dropwise adding hydrogen peroxide to obtain modified bamboo charcoal fibers, and filling the modified bamboo charcoal fibers with nano calcium carbonate coated and modified by undecylamine and dodecylamine, adding thermotropic liquid crystal polyarylester fiber treated by nitrogen plasma into the modified bamboo charcoal fiber dispersion liquid filled with the modified nano calcium carbonate, carrying out cross-linking reaction, and drying and dehydrating to obtain the high-strength thermal-insulation composite board for the building. The high-strength thermal-insulation composite board for the building prepared by the invention has excellent thermal insulation performance and breaking strength.

The invention discloses an electroplating method for improving surface corrosion resistance of a metal pipe fitting. The electroplating method comprises the following step of firstly, surface cleaning treatment, wherein the metal pipe fitting is firstly fed into a cleaning agent to be subjected to ultrasonic dispersion, the ultrasonic dispersion power is 500 w, and the ultrasonic time is 20 min. The metal pipe fitting is subjected to surface cleaning treatment firstly, impurity particles on the surface of the pipe fitting are removed, cleaning agent treatment is adopted in the cleaning process, bentonite is adopted as a main agent of the cleaning agent, the bentonite has a lamellar structure, surface activity modification is conducted on bentonite lamellas through sodium molybdate and sodium dodecyl benzene sulfonate in the grinding process, the active performance between the bentonite lamellas is improved, then in the cleaning process, the metal pipe fitting is ground through the laminar layer of the bentonite under assistance of ultrasonic dispersion, then the surface structure of the pipe fitting is refined, and uniformity of the surface of the pipe fitting is improved.

The invention relates to an automatic dismounting mechanism for a test fixture. The comprises a fixing frame, a plurality of supporting rods, a robot switch panel, a lateral pushing assembly, a plurality of ejection assemblies and a plurality of hook units, wherein the plurality of supporting rods are vertically arranged below the fixing frame; the robot switch panel is arranged above the fixing frame; the lateral pushing assembly is connected onto the fixing frame; the plurality of ejection assemblies are connected onto the lateral pushing assembly, and can abut against a conical nut in a test pipe fitting, so that the conical nut can be separated from the test pipe fitting; the plurality of hook units are connected onto the lateral pushing assembly; and the hook units are driven by the lateral pushing assembly to horizontally move and are hooked to the upper portion of the test fixture. Compared with the prior art, the automatic dismounting mechanism for the test fixture can be matched with a full-automatic dismounting process, and accordingly, large-batch, high-precision and automatic detection fixture dismounting and part discharging are realized.

The invention discloses a fiber bragg grating strain sensor. According to the fiber bragg grating strain sensor, one end of a first fixed metal sleeve and one end of a second fixed metal sleeve are arranged at the two ends of an elastic sleeve respectively in a sleeving mode, a fiber bragg grating is fixed into the elastic sleeve, fixing screw holes of fixing components are fixed to the first fixed metal sleeve and the second fixed metal sleeve respectively, one end of each fixing bolt is of a conical structure, the fixing bolts are inserted into the corresponding fixing screw holes, a throughhole is formed in each fixing bolt, the end of each through hole communicates with the end of a cone head of the corresponding fixing bolt, a pushrod is inserted into the through hole of each fixingbolt, one end of each pushrod is also of a conical structure, each through hole is filled with viscous glue, and an anti-corrosion component is further arranged on each of the first fixed metal sleeve, the second fixed metal sleeve and the elastic sleeve. The fixing method of the fiber bragg grating strain sensor is easy and convenient to use, and service life is prolonged.