192results about How to "Mechanical strength is not affected" patented technology

The present invention relates to a surgical saw blade comprising a clamping portion and a working area provided with a toothing, wherein a plurality of recesses are formed in the working area.

The invention discloses a porous lithium ion battery separator with an interpenetrating polymer network structure, and a preparation method and an application for the porous lithium ion battery separator. The preparation method specifically comprises the steps of uniformly mixing polyvinylidene fluoride-hexafluoropropylene, (methyl) acrylate monomers, octavinyl octa-silsesquioxane cross-linking agent and pore-forming auxiliary in a proper solvent to form porous gel polymer film with the interpenetrating polymer network structure through free radical polymerization, wherein the ion conductivity of the polymer film at a temperature of 25 DEG C can reach 1.0*10<-3>S/cm, the tensile strength can reach 7MPa, and excellent dimensional stability is realized; and on the basis, carrying out post processing on the gel polymer film to obtain the porous separator. By adoption of the lithium ion battery separator provided by the invention, the ionic conductivity can be greatly improved, and the high rate charging-discharging performance can be also obviously enhanced as well, so that the porous lithium ion battery separator is high in application potential.

The invention discloses a preparation method and the application of a fixed bed framework metal catalyst. The method includes: adopting a halogen substituted organic polymer as a coupling agent of active metal aluminum alloy powder, preparing aluminum alloy powder containing transition metal in VIII class, IB class or VB class into particles in certain shapes, adopting forming methods like direct kneading method for band extrusion or tabletting or coating method for attaching the alloy powder on the surface of a carrier with certain strength, subjecting the formed particles to heat treatment under certain atmosphere for improving strength, and activating with an inorganic alkaline solution to obtain the fixed bed framework metal catalyst. The catalyst prepared by the method can be used for fixed bed hydrogenation reaction of unsaturated organic compounds like aldehyde, ketone, ester, nitrile, olefine, aromatic and nitro compounds. The aluminum alloy particles are low in heat treatment temperature, the strength of the carrier can be fully utilized by the coating method, and the aluminum alloy particles after being activated have excellent hydrogenation activity and stability.

The invention discloses a nondestructive detection system for positioning and imaging internal abnormality (such as decay, holes, scars, cracks and the like) of a woody body based on radar wave. The system comprises a radar detection movement platform, a three-dimensional laser scanner, a data processing system and imaging software. The system principle is characterized in that reflection characteristics of an abnormal layer are obtained by utilization of methods, such as threshold value, matched filter, Hilbert integral and the like according to transmission characteristics, such as spreading amplitude, wave speed change, reflection, and transmission, of the radar wave in the woody body and abnormal media and according to distribution characteristics of electrical properties and physical properties on the basis of images acquired through scanning by medium-coupled radar wave, and a contour of a tree is obtained by utilization of the three-dimensional laser scanner, therefore the decay in the tree is accurately positioned and imaged.

The invention belongs to the field of plastic tubular product, and more specifically relates to an antibacterial wear-resistant plastic tubular product, and a preparation method thereof. The antibacterial wear-resistant plastic tubular product is prepared from, by weight, 100 to 150 parts of high density polyethylene, 10 to 30 parts of acetylated monoglyceride, 10 to 30 parts of coumarone resin, 5to 10 parts of anti-oxidant 1010, 20 to 40 parts of hollow glass bead, 10 to 15 parts of nanometer silver, 1 to 6 parts of chlorinated polyethylene, 3 to 7 parts of high resistant carbon black, 5 to8 parts of silane coupling agent, 5 to 10 parts of nanometer titanium dioxide, 3 to 6 parts of zinc oxide, 10 to 15 parts of acrylic resin, and 15 to 20 parts of an auxiliary agent. The antibacterialwear-resistant plastic tubular product possesses excellent heat resistance, wear resistance, antibacterial performance, and mildew resistance. The mechanical strength of the antibacterial wear-resistant plastic tubular product is not influenced by the antibacterial performance and mildew resistance, wear resistance is excellent, service life is long, and market application prospect and economic benefit are excellent.

An LCD is composed of a fixing frame and a diaphragm. Said fixing frame consists of a frame, for holding said diaphragm and used as the external frame of LCD, multiple fixing pieces comprising a diaphragm fixing rib for pressing it and a side fixing part for binding the diaphragm, and multiple fixing structures for fixing the fixing piece to frame. Its advantages are no need of metallic frame, light weight and high strength.

The invention discloses a phosphorous graphite ferrum-based powder metallurgy antifriction material comprising the following raw material components:0.1-5% of copper-plated flake graphite, 0.1-3.5% of common graphite powder, 0.1-3% of zinc stearate, 0.1-4% of phosphorus and the balance of ferrum powder. The powder metallurgy material is prepared through the steps of powder mixing, pressing and sintering. Compared with the prior art, an adopted new powder mixing granulation method has the advantages that the problem that powders with different masses and densities are segregated and layered in a powder material mixing process is avoided, and the segregation of graphite in the material is avoided effectively; a copper-plated flake graphite and the common graphite powder mixed adding way is adopted, so that the pressing moldability and sintering characteristic of the material are improved; due to the addition of phosphorus, the hardness and adhesive abrasion resistance of the material are remarkably improved; in a word, the antifriction and wear resistant characteristics of the ferrum-based powder metallurgy antifriction material disclosed by the invention are improved, and the ferrum-based powder metallurgy antifriction material has the advantages of relatively low cost and wide application range.

The invention relates to compound active powder of ball milling steel slag tailing slurry and blast-furnace slag and the application of the compound active powder in preparing concrete. The admixture is prepared by mixing ball milling steel slag tailing slurry powder and blast-furnace slag powder with equal Brinell specific surface area of 500-600 m <2>/kg according to the weight ratio of 1:1-2. When the compound active powder is used as concrete admixture, proper concrete mixing portion is adopted; and the admixture can be used for partially replacing equivalent cement gel according to the proportion of 30-50 percent so as to prepare the concrete with C30-C50 strength degree. The invention utilizes solid wastes of steel enterprises, changes the solid wastes into valuable and has simple production process, ensures that the concrete has good performance and markedly lowered manufacturing cost.

The invention relates to a fiber grating composite insulator comprising a core rod, a high-voltage end fitting and a low-voltage end fitting, wherein the high-voltage end fitting and the low-voltage end fitting are arranged on both ends of the core rod; the center of the core rod is provided with a fiber; the fiber comprises a grating coverage area and a tail fiber, wherein a grating coverage area is internally and uniformly provided with 3-20 gratings, and the length of the tail fiber is longer than or equal to 500mm; and the fiber is sequentially sleeved with a white sleeve, a metal hose and a hollow steel tube from inside to outside. A manufacturing method of the fiber grating composite insulator comprises the following steps of: firstly manufacturing the fiber; then packaging the fiber; then drawing the packaged fiber and soaked glass fibers out of a mould together to manufacture the core rod; then sawing the hollow steel tube to strip to expose the tail fiber; and then sequentially carrying out fitting pre-crimping, graded injection molding and secondary crimping to obtain the needed fiber grating composite insulator. The invention can not only realize the on-line monitoring of the mechanical property and the electric property of the fiber grating composite insulator and have difficult environmental corrosion and better mechanical property, but also accurately transmit the optimal sensing signals, save the production cost and enhance the manufacturing efficiency.

Provided is a compression joint clamp of a steel-cored aluminum strand. Two split semi-ring clamp sheets are riveted through a hinge shaft, a connection seat is respectively arranged at the free-ends of the two semi-ring clamp sheets, and the two connection seats form a whole through a fastener. When the compression joint clamp is used, an aluminum strand arranged outside an opening of an aluminum pipe extends to the position where transformation quantity is easy to gather to achieve the aim of preventing aluminum strand transformation quantity generated by the compression joint aluminum pipe from extending to an aluminum-strand wire, so that the transformation quantity can be digested on the steel-cored aluminum strand in the aluminum pipe. Under the effect of compression joint force, transformation of the steel-cored aluminum strand in the aluminum pipe cannot affect mechanical strength of the steel-cored aluminum strand, the transformation enables the steel-cored aluminum strand and the inner wall of the aluminum pipe to generate stronger combining force, and connection reliability is higher. Practice proves that the clamp effectively reduces scrappage of the wire, strand broken rate and expansion rate of the wire are reduced to 3% from 40%, and the effect is obvious.

This invention consists of a pneumatic accessory to limit aerodynamic forces in horizontal axis wind turbine blades, which is mainly integrated by an inflatable seal or microtab, a rigid cover with a specific shape that assembles onto a cavity external to the suction surface of the blade, and a pneumatic feed system.

The invention discloses a high-strength wear-resistant and fireproof pouring material comprising the following raw materials in parts by weight: 20-25 parts of a coarse aggregate, 35-40 parts of a medium-fine aggregate, 15-20 parts of a fine aggregate, 5-10 parts of a binding agent, 5-10 parts of silicon micropowder, 10-15 parts of aluminum oxide micropowder and 1-5 parts of water, wherein the coarse aggregate is special-grade alumina, the medium-fine aggregate comprises silicon carbide and mullite, the fine aggregate is special-grade alumina, and the binding agent is prepared from the following components in parts by weight: 25-35 parts of sodium silicate, 15-25 parts of magnesium silicate and 30-60 parts of sodium hexametahposphate.

The invention discloses a 3D-printed polyetheretherketone bone tissue symbiosis multihole skeleton substitute and a method thereof. The 3D-printed polyetheretherketone bone tissue symbiosis multiholeskeleton substitute comprises a bone tissue symbiosis region, wherein the bone tissue symbiosis region is a three-dimensional region where the bone substitute is in contact with bone tissue around thebone substitute and comprises a multihole region and an entity region, and the region except the bone tissue symbiosis region, in the substitute, is a bearing strengthening region. The problem that aPEEK material as a bone implant is difficult to be in symbiosis and combination with the bone tissue is solved, and the postoperative recovery of the PEEK bone implant is promoted.

The invention relates to the technical field of materials, and discloses a coated barium sulfate nanoparticle used for bone cement developer. The coated barium sulfate nanoparticle mainly comprises porous barium sulfate nanoparticles coated on the surface of the porous barium sulfate nanoparticles and loaded with hexa (6-iodo-6-deoxy)-[alpha]-Polydopamine (PDA) coatings of cyclodextrin (I-CD) andsilver (Ag) were prepared to prepare barium sulfate nanoparticles. The invention discloses a coating barium sulfate nanoparticle, which is prepared by adding the coating barium sulfate nanoparticle into polymethyl methacrylate bone cement as a developer, and the preparation method and the use thereof show excellent X-ray diffraction characteristics. The preparation method is simple and can be usedas a new type of developer in bone cement because of its developmental properties, antibacterial properties, biocompatibility, mechanical properties and drug loading and release properties.

The invention relates to a PBT material and a preparation method thereof, belonging to the technical field of high polymer materials. The PBT material comprises the following raw materials by weight: 55 to 75% of polybutylene telephthalate, 15 to 35% of TPEE, 0.2 to 1.0% of calcium carbonate, 2.0 to 5.0% of 1,4-butylene glycol, 0.5 to 2.0% of an anti-oxidant, 0.5 to 3.0% of dicumyl peroxide, 2.0 to 5.0% of a cross-linking agent, 0.2 to 1.5% of a light stabilizing agent and 0.2 to 1.0% of an anti-hydrolysis agent. The invention also discloses the preparation method for the PBT material. According to the invention, TPEE and the anti-oxidant 1010 are used for the PBT material, so the prepared PBT material has good elasticity and improved impact strength, toughness and ageing resistance, and thus, the PBT material has more excellent mechanical and machining properties, enables a product to have prolonged service life and better stability and is widened in the application scope; the PBT material and the preparation method overcome the technical problem that the mechanical strength of conventional PBT resin cannot meet usage requirements after toughening; and the preparation method is simple in process and easy to realize industrial production.

The invention discloses a dielectric filter. The dielectric filter comprises at least three dielectric resonators in successive connection; each dielectric resonator comprises a body composed of a solid-state dielectric material and a conductive layer covered on a body surface; a groove structure covered with the conductive layer is arranged on the body surface of at least one dielectric resonators except the dielectric resonators at the head and end locations, thereby realizing the capacitive cross-coupling; the groove structure and the located dielectric resonator commonly form a secondary-mode resonant cavity. The invention further discloses a 5G communication device. Compared with the prior art, the cross-coupling with negative polarity can be conveniently realized, the mechanical strength of the filter cannot be reduced, the preparation process is simple, and the mass production is convenient.

The invention discloses a flame-retardant PC plastic. The flame-retardant PC plastic comprises the following components in parts by weight: 80-86 parts of PC, 7-9 parts of polyimide, 5-8 parts of titanium dioxide, 10-14 parts of alkyl benzene sulfonate, 5-9 parts of dimethyl siloxane, 2-3 parts of cupric oxalate, 10-15 parts of magnesium hydroxide, 7-9 parts of phthalate anhydride, 5-7 parts of coated red phosphorus, 10-20 parts of cobalt silicate and 8-10 parts of graphite. The flame-retardant PC plastic has a good flame-retardant function; an obvious flame-retardant function can be performed when a very small amount of flame-retardant PC plastic is used. The flame-retardant PC plastic does not affect the mechanical strength of a plastic product and particularly does not lower the thermal deformation temperature, the mechanical temperature and the electric insulation property of the plastic product.

The invention relates to wearable refractory castable which comprises the following raw materials in parts by weight: 20-25 parts of coarse aggregate, 35-40 parts of medium aggregate, 15-20 parts of fine aggregate, 5-10 parts of binder, 5-10 parts of silica micropowder, 10-15 parts of alumina micropowder, and 1-5 parts of water, wherein the coarse aggregate is special-grade alumina; the medium aggregate comprises silicon carbide and zirconite; the fine aggregate is special-grade alumina; the binder comprises the following components in parts by weight: 25-35 parts of magnesium silicate, and 75-65 parts of phosphate. According to the wearable refractory castable disclosed by the invention, corundum is replaced by the alumina, the silicon carbide and the zirconite, and therefore, the cost of raw materials is reduced; furthermore, the mechanical strength and the abrasive resistance of materials are not influenced.

The invention belongs to combustion engine crank box, which is a crank box for the vibration damping motorcycle engine, made up of left crank box and the right crank box, the character lies in: the left and the right crank boxes use magnesium alloy to be cast and formed, the thickness of the box wall is 3.5-6mm, several reinforcing ribs with width of 3-5mm are arranged on the box surface and the cover. Compared to the gearing aluminum alloy crank box, when the structure intensity of the box is upgraded, the heat irradiating area is also increased, it can reduce the high temperature creep, the mechanical intensity of the magnesium alloy crank box in the high temperature environment is not affected; the experience to the same motorcycle LC125 testifies, the crank box of the invention caters all the demands of engine, and the weight is reduced, thus it can save 0.4l oil per hundred kilometers, the average heat vibration and noise only the 1/3 of the traditional crank box.

The invention discloses a production method of antistatic nylon 56 fibers. The method comprises the following steps: (1) under the protection of nitrogen, bio-based pentane diamine reacts with adipicacid in water to obtain a nylon 56 saline solution; (2) the nylon 56 saline solution reacts with a molecular weight regulator, then an antistatic agent is added, vacuumizing is performed, and nylon 56polymer melt is obtained by stirring; and (3) the nylon 56 polymer melt is put into a spinning manifold and the antistatic nylon 56 fibers are obtained by spinning, cooling, oiling and moistening, drafting, tension heat setting, curling, oiling, relaxation heat setting and cutting. The antistatic nylon 56 fibers obtained by the invention have the advantages of excellent antistatic performance, good fabric air permeability, high moisture regain, wear resistance and comfort and can be widely applied to the aspects of textiles, general engineering materials, automobile manufacturing, sports equipment, aviation and space navigation.