37results about How to "Good mechanical elasticity" patented technology

The invention provides a three-dimensional oil-water separating material based on the static spinning technology and a preparation method thereof, belonging to the technical field of water treatment. The method specifically comprises the following steps: (a) preparing a static spinning solution; (b) selecting a proper solvent to directly receive static spinning nano fibers to obtain a nano fiber solution; (c) shaping and freezing the nano fiber solution, and drying through a freezing drying machine to obtain the three-dimensional nano fibers; (d) pre-oxidizing, carbonizing and activating the three-dimensional nano fibers to obtain three-dimensional carbon nano fibers; (e) wrapping the three-dimensional carbon nano fiber glue with lipophilic and hydrophobic films so as to obtain the final three-dimensional oil-water separating material. According to the preparation method of the three-dimensional oil-water separating material, the composition and structure of the material are easily controlled; the mechanical performance and hydrophobic performance of the materials can be effectively improved; the oil-water separating effect is good; the material can be recycled and has a wide application prospect in the oil-water separation field.

The invention provides a heat-conducting gasket, which comprises a heat-conducting film and a binder layer, and optionally comprises other heat-conducting fillers, wherein the heat-conducting is provided with a plurality of holes penetrating through the upper surface and the lower surface of the heat-conducting film, and the holes are filled with a binding agent. Therefore, the binding agents in different layers can be connected through the plurality of holes to form a continuous structure, the heat-conducting film is wrapped on the microscale, the binding agent and the heat-conducting film can be strongly combined together without a surface coating, and meanwhile, the problem of layering of the heat-conducting film is avoided.

The invention relates to a flexible extendable nerve electrode and a preparation method and application thereof. The flexible extendable nerve electrode comprises a flexible polymer material, a liquid metal electrode embedded in the flexible polymer material and an insulation material; the liquid metal electrode includes a lead, an electrode site and an external interface end, and the electrode site and the external interface end are respectively located at two ends of the lad; the insulation material covers the lead and the external interface end of the liquid metal electrode. The flexible extendable nerve electrode has good biocompatibility, high conductivity and excellent tensile properties, and these properties can be long-term and stable; the preparation method has the advantages of high machining accuracy, strong design flexibility, simple process, low cost and easy mass production and optimized design of nerve electrodes.

The invention relates to a method for preparation of an antifouling paint from a synthetic hydroxyl terminated polyester copolymer. The method mainly takes lactic acid and lactone as the comonomer, adopts polyol as the initiator, employs p-toluenesulfonic acid and stannous octoate as the catalyst, and performs melt polymerization to synthesize the hydroxyl terminated polyester copolymer, can realize self-polishing through self-degradation of resin and current scouring under a flowing seawater environment, and under a motionless seawater environment, by accelerating resin degradation through self-catalysis of degraded lactic acid molecules to resin, resin can still achieve good degradation performance under a motionless seawater environment. The antifouling paint prepared from the hydroxyl terminated polyester copolymer as the matrix adopts isocyanate as the curing agent to conduct curing, the cured antifouling paint has controllable degradation performance and mechanical elasticity, can satisfy a high polishing rate under a low navigation speed or motionless state of ship, also can reduce the antifouling agent dosage, and is green and environment-friendly, thus having good potential application value.

The invention discloses a quartz pendulum accelerometer, which comprises an upper pole plate, a middle pole plate and a lower pole plate, wherein each of the upper pole plate and the lower pole plate comprises a bonding region, a capacitor plate region and a capacitor lead region; the bonding region surrounds the periphery of the capacitor plate region; one end of the capacitor lead region is suspended and the other end passes through the bonding region and is connected with the capacitor plate region; the thickness of the bonding region is greater than that of the capacitor plate area; the middle pole plate is formed by a bonding region, a mass block, a flexible beam and an electrode lead region; the bonding region is annular; the mass block is fixedly connected with the inner side of the bonding region through the flexible beam; one end of the electrode lead region is suspended and the other end passes through the bonding region and is connected with the mass block; and the upper pole plate, the middle pole plate and the lower pole plate are connected into a whole through the bonding regions thereof. The quartz pendulum accelerometer is simple in structure, the same material is utilized, precise machine assembly is not needed, and the reliability and the manufacturability can be improved.

The invention discloses a composite material and a flexible rubber hose. The composite material comprises a lamellar flexibility main body layer, wherein the main body layer is internally provided with a skeleton; the skeleton is a weft-knitted fabric in a stereoscopic texture structure; the skeleton is arranged between the inner wall and the outer wall of the body of the flexible rubber hose; the skeleton is the weft-knitted fabric in a stereoscopic texture structure; through the setting of the weft-knitted fabric in the stereoscopic texture structure, the composite material (rubber hose) is integrally elastic and flexible.

A method for producing a turbine vane with a vane airfoil and a vane root is provided to achieve a higher efficiency for a turbine. The method includes: a) production of a vane airfoil and a vane root as separate parts; b) introduction of a cooling air opening into the vane airfoil; and c) joining the vane airfoil and vane root together after step b).

A synthetic insulation material that rivals and surpasses down in performance without suffering degradation in insulating power over time. The material is an aggregate of particulate units that have a fractal-like geometric configuration. The geometric configuration includes non-integer dimensionality that promotes physical entanglements of the particulate units. The physical entanglements impart a high frictional resistance to slippage of the particulate units to maintain loft over time by inhibiting the settling of particulate units upon compression. The geometric configuration further includes aspects of self-similarity. The particulate units are formed from a material that efficiently scatters thermal radiation. The combination of high loft and efficient scattering of thermal radiation minimizes heat loss resulting from conduction and radiation, leads to a superior material for thermal insulation, has excellent health characteristics for human and the environment, and exhibits excellent long term life cycle performance.

The invention belongs to the technical field of intelligent flexible sensors, and particularly relates to a flexible mechanical sensor of a bionic microstructure and a preparation method of the flexible mechanical sensor. The flexible mechanical sensor comprises conductive sensing layers which are arranged in pairs and have surface microstructure characteristics, and the surfaces, with the surface microstructure characteristics, of the conductive sensing layers are oppositely arranged, wherein the conductive sensing layer comprises a base body layer; the base body layer is a microstructure film material base body layer which is prepared by heating and foaming a polymer elastomer film doped with thermal expansion microspheres, and the surface of the microstructure film material substrate layer is provided with a micro-bulge structure generated due to thermal expansion of the internal thermal expansion microspheres; and a conductive coating formed on the surface, with the micro-bulge structures, of the base body layer is further included. The problems that an existing microstructure flexible mechanical sensor is complex in preparation process, high in cost, difficult to prepare on a large scale and the like are solved.

A moulding material contains to an extent of at least 50 wt % of the combination of the following constituents a) 80 to 97 parts by mass of a polyamide component containing a1) 70 to 100 parts by wt of PA PACMX (wherein X=8 to 18), and a2) 30 to 0 parts by wt of a linear aliphatic polyamide having on average 8 to 12 carbon atoms in the monomer units, wherein the parts by wt sum to 100, and b) 20 to 3 parts by mass of a core-shell modifier which contains the following: b1) a core which contains 60 to 100 wt % of butadiene units and 0 to 40 wt % of styrene units, wherein the core makes up 60 to 95 wt % of the core-shell modifier; and b2) a shell which contains 80 to 100 wt % of methyl methacrylate units and 0 to 20 wt % of modifying monomer units, wherein the shell makes up 5 to 40 wt % of the core-shell modifier, wherein the parts by mass of a) and b) sum to 100.

The invention provides a preparation method for an iron-doped pleated graphene aerogel by high-temperature expansion. The preparation method comprises the following steps: preparing a graphite material with alternate intercalation of an oxygen-containing group layer and ferric trichloride, placing the graphite material into an aqueous solution, carrying out ultrasonic stripping so as to obtain ferric trichloride intercalated graphene oxide which is dispersible in water, carrying out freeze-drying so as to obtain a ferric trichloride intercalated graphene oxide aerogel, and carrying out high-temperature treatment so as to obtain the iron-doped pleated graphene aerogel. The method provided by the invention has the following advantages: the damage to a graphene sheet structure is effectivelyreduced; a high temperature is utilized for highly-efficient removal of oxygen-containing groups; the ferric trichloride is decomposed to generate gas; a nanosheet layer can be pleated; the specific surface area of an aerogel is increased; mechanical elasticity of the aerogel is reinforced; iron ions are uniformly distributed among graphene sheets; conductivity of a graphene nanosheet is effectively improved; and conductivity of the aerogel is improved.

The invention discloses an electricallyconductive rubber composition, electrically conductive rubber and a preparation method of the electrically conductive rubber. The electrically conductive rubbercomposition comprises the following components in parts by weight: 100 parts of a rubber matrix, 5-30 parts of carbon nanotubes, 1-20 parts of graphene, 0-100 parts of nano M-type barium ferrite, 2-10parts of a silane coupling agent and 1-10 parts of a vulcanizing agent. The electrically conductive rubber prepared from the electrically conductive rubber composition can shield high-frequency electromagnetic waves within the frequency range of 1 GHz-110 GHz, the shielding effect is improved along with the increase of the frequency of electromagnetic waves, and meanwhile, the electrically conductive rubber also has high electrical conductivity and high mechanical elasticity.

The invention relates to a furniture hinge comprising a stop element and a hinge cup that is pivotally connected to said stop element by means of an articulated lever, a damper being arranged in a housing and this housing being connected to said hinge cup by means of securing elements. The hinge cup comprises a centring region and a mounting region that has a cup depth less than that of the centring region and, in said mounting region, the housing with the damper is secured to the hinge cup from the outside. This achieves a damped furniture hinge which can be cleaned easily and can be installed quickly on a furniture part.

The invention relates to the field of lithium ion battery materials, and discloses a preparation method of a high-strength lithium ion battery silicon alloy composite anode material in order to solvethe problem of low mechanical strength of an anode material, and the preparation method comprises the following steps: mixing alloy powder, silicon nano powder, a carbon material, polyacrylonitrile, pullulan gum and / or gellan gum to form a mixed slurry; crushing the mixed slurry; grinding the obtained mixed solution, and adding N, Ndimethylformamide in the grinding process; then coating the slurryobtained by grinding on a copper foil; drying the copper foil in vacuum; carrying out thermal decomposition treatment on the electrode plate; and annealing to cool the electrode plate to room temperature. The electrode structure prepared by adopting the method has higher mechanical strength; rapid reduction of battery performance caused by volume change of silicon can be effectively relieved; andthe graphene around the silicon particles has high mechanical elasticity, and is helpful for adapting to significant volume change.

A moulding material contains to an extent of at least 50 wt % of the combination of the following constituents a) 80 to 97 parts by mass of a polyamide component containing a1) 70 to 100 parts by wt of PA PACMX (wherein X=8 to 18), and a2) 30 to 0 parts by wt of a linear aliphatic polyamide having on average 8 to 12 carbon atoms in the monomer units, wherein the parts by wt sum to 100, and b) 20 to 3 parts by mass of a core-shell modifier which contains the following: b1) a core which contains 60 to 100 wt % of butadiene units and 0 to 40 wt % of styrene units, wherein the core makes up 60 to 95 wt % of the core-shell modifier; and b2) a shell which contains 80 to 100 wt % of methyl methacrylate units and 0 to 20 wt % of modifying monomer units, wherein the shell makes up 5 to 40 wt % of the core-shell modifier, wherein the parts by mass of a) and b) sum to 100.

The invention relates to a container having a packaging which surrounds a filler, the packaging is made of a yarn (4) comprising a core and a sheath at least partially surrounding the core, the core comprising mineral fibers (5) extending in a longitudinal direction (X) of the yarn (4). According to the invention, it is provided that the sheath comprises at least one biodegradable sheath fiber (6), the mineral fibers (5) are wrapped at least in some regions by the at least one biodegradable sheath fiber (6).

The invention provides hyperelastic silk fibroin micro-nano hybrid fiber aerogel and a preparation method and application thereof.The preparation method includes the steps that stable silk fibroin micro-nano hybrid fiber dispersion liquid is obtained through non-alkali degumming, deep-eutectic solvent multi-scale stripping, suction filtration washing and ultrasonic dispersion; a faintly acid eutectic solvent system-urea / guanidine hydrochloride and choline chloride / lactic acid system is adopted in stripping; the method is beneficial to protecting the long chain and protein aggregation state structure of the silk, meanwhile, the weak acid system is closer to the isoelectric point of the silk, the silk has the charge neutralization characteristic, the contact area with the deep eutectic solvent system is increased, and the swelling degree is increased. The silk fibroin micro-nano hybrid fiber dispersion liquid is poured into a customized mold and then subjected to freeze-induced self-assembly and freeze-drying, and the silk fibroin micro-nano hybrid fiber aerogel is obtained and has excellent heat insulation and particle filtering performance.

The invention belongs to the technical field of pipe fitting processing, and relates to a pipe fitting cold extruding forming machine and a forming technology of the pipe fitting cold extruding forming machine. The forming machine comprises a frame, a mold locking oil cylinder, an ejection oil cylinder, pushing oil cylinders and auxiliary oil cylinders, and the mold locking oil cylinder, the ejection oil cylinder, the pushing oil cylinders and the auxiliary oil cylinders are arranged in the frame. A through work platform is arranged in the middle of the frame, the ejection oil cylinder is arranged at the position, below the work platform, in the frame, the mold locking oil cylinder is arranged at the position, corresponding to the position above the work platform, in the frame, the pushing oil cylinders are arranged at the positions, on the two sides of the work platform, in the frame respectively, and the auxiliary oil cylinders are arranged on the mold locking oil cylinder and the pushing oil cylinders respectively. In the work process, a lower workpiece mold is placed on the work platform, the mold locking oil cylinder is connected with an upper workpiece mold, the two pushing oil cylinders are connected with water injection devices respectively, the water injection devices are connected with a workpiece in the pushing process, and sealing contact is achieved. A three-way reducing pipe is formed based on the cold extruding technology, operation and forming are easy, environmental protection and high efficiency are achieved, safety is high, and the labor intensity of workers is lowered.

The invention discloses a tension holding structure, a tension holding device and vibrating wire equipment and relates to the technical field of tension holding. The tension maintaining structure comprises a base, a connecting piece and a reinforcing piece, wherein a through hollow channel is formed in the base, and a stop part is arranged in the hollow channel; the connecting piece is accommodated in the hollow channel; the reinforcing piece is contained in the hollow channel and is in interference fit with the connecting piece so that the connecting piece can abut against the stopping part; the tension holding device and the vibrating wire type equipment respectively comprise a tension holding structure. The structure is advantaged in that a technical problem that in the prior art, after an intra-cavity string pulling force maintaining device is installed, the pulling force of string pulling becomes small can be solved, after installation is completed, the pulling force of string pulling does not change, and a set value can be maintained.

The invention discloses a gynecological pelvic floor patch. The patch is composed of a base layer, a coating and a fiber layer; the base layer is an electrostatic spinning layer prepared from poly citrate-polycaprolactone; the base layer is coated with the coating and the coating is composed of tussah silk fibroin, chitosan and a polypeptide anti-microorganism agent; and the fiber layer is obtained by electrostatic spinning of a PLGA-chitosan-collagen mixed solution arranged on one side of the base layer coated with the coating. The pelvic floor patch has good biocompatibility, excellent mechanical property and lasting anti-microorganism property.

An electrical connector includes a plurality of contact units each having a first part and a second part mechanically and electrically connected to each other wherein the first part provides the spring contacting section for performing the superior mechanical resiliency while the second part provides the mounting section soldered upon the printed circuit board and configured to lower the impedance compared with the first part and provide strong retention thereof.

A refrigerator sealing strip material and a preparation method thereof are disclosed. The refrigerator sealing strip material is characterized by comprising the following components in parts by weight: 15 to 40 parts of polystyrene-polyethylene-polybutene-polystyrene copolymer, 5 to 30 parts of TPU, 10 to 40 parts of mixture composed of PP and PE, 5 to 15 parts of ethylene-vinyl acetate copolymer, 8 to 28 parts of inorganic minerals, 5 to 20 parts of naphthenic oil HYN-1, 1 to 8 parts of antioxidant, and 2 to 12 parts of compatilizer. The invention further relates a preparation method of the refrigerator sealing strip material. The polystyrene-polyethylene-polybutene-polystyrene copolymer and TPU are taken as the basic materials, a mixture composed of PP and PE is mixed with the basic materials, the groups in the TPU molecular chain such as carbamate, isocyanate, and the like will be inserted into the polystyrene-polyethylene-polybutene-polystyrene, and thus the polystyrene-polyethylene-polybutene-polystyrene copolymer and TPU are stuck together, so the oil resistant performance and solvent resistant property of the material are largely improved, and at the same time, the material has good resilience.

The invention discloses a high-strength silicon alloy lithium battery negative electrode material and a preparation method thereof, and the preparation method mainly comprises the following steps: mixing and crushing raw materials (metal powder, silicon nano powder, a carbon material, polyacrylonitrile fiber and Gelon gum), and adding dimethylacetamide for grinding; coating a copper foil with the ground mixture, and carrying out vacuum drying; and then carrying out thermal decomposition treatment on the dried copper foil and annealing to room temperature. The electrode material prepared by the invention has relatively high mechanical strength; the silicon volume change in the battery charging and discharging process is effectively relieved; the graphene-coated silicon particles with high mechanical elasticity are favorable for adapting to obvious volume change.