14results about How to "Avoid strength loss" patented technology

The present invention relates to the use of light in the 800-1400 nm range (NIR), as perceived by two-photon vision, in the image generator to display AR information at the human retina. In particular the present invention discloses augmented reality glasses based on the two-photon vision comprising at least one optical combiner, which includes a part or parts of a dichroic material or part of the image combiner, can be mounted together with such dichroic optics, for example, a dichroic mirror, or any other optical solution that would reflect or deflect the NIR beam into the eye but transmit the visible light coming from the outside world, avoiding the loss of intensity for normal vision, and at least one image generator, which consists of at least one source of the NIR beam.

The application discloses a petroleum resin hydrogenation catalyst and a preparation method thereof. The petroleum resin hydrogenation catalyst comprises a first phase and a second phase; the first phase comprises aluminum oxide and nickel oxide, the second phase comprises aluminum oxide, zinc oxide and nickel oxide, and the catalyst has a spherical core-shell structure. The preparation method of the petroleum resin hydrogenation catalyst comprises the following steps: firstly, preparing an aluminum oxide-nickel oxide composite material; then, uniformly dispersing the composite material with a surfactant and a hydrocarbon-containing compound to obtain material A; uniformly mixing aluminum sol, a zinc-containing compound, a nickel-containing compound, a curing agent and an emulsifier additive to obtain a mixed solution; finally, mixing the material A with the mixed solution, and further performing forming, aging, extraction, washing, drying and calcination to obtain the petroleum resin hydrogenation catalyst. The petroleum resin hydrogenation catalyst has the advantages of high sulfur resistance, high hydrogenation decolorization performance and high stability, and is especially suitable for C5 and C9 petroleum resin hydrogenation treatment processes.

The utility model discloses a kind of lightweight high-strength cabinet main body support section bar, belong to cabinet section bar technical field, its technical scheme main point includes crossbeam, column and steel tee, the steel tee is set in the connecting place of crossbeam and column, by the first section bar main plate of crossbeam and column, second section bar main plate adopts W shape outer contour, by bending process forms wave shape cross section, when bearing perpendicular load, W shape structure will force be dispersed to each bending part, reduce single-point stress concentration, steel tee is welded after inserting with crossbeam, column by connecting protrusion, the elastic deformation ability of W shape outer contour and bending part relieves welding thermal stress, improve the fatigue resistance of connecting position, compared with traditional solid rectangular steel pipe, so that the weight of cabinet section bar can be reduced, while the bending strength is greatly improved, meet the urgent needs of industrial electrical integration to cabinet lightweight, improve protection level and multi-cabinet combination and other aspects.

This application discloses a micro-expansion low-heat silicate cement-based concrete material, its preparation method, and its application, belonging to the field of concrete engineering technology. Each cubic meter of micro-expansion low-heat silicate cement-based concrete material comprises 78-92 kg of water, 82-161 kg of micro-expansion low-heat silicate cement, 28-105 kg of fly ash, 476-608 kg of sand, and 1286-1696 kg of aggregate. The dosage of naphthalene-based water-reducing agent is 0.4 wt%-0.6 wt%, and the dosage of air-entraining agent is 0.014 wt%-0.018 wt%. The air content of the concrete material in the mixed state is 4%-5%, and the slump is 35-50 mm. Through the synergistic proportioning of water, micro-expansion low-heat silicate cement, fly ash, sand, and aggregate, the low heat of hydration and micro-expansion characteristics of micro-expansion low-heat silicate cement are fully utilized.

The application belongs to the technical field of metal materials, and discloses a high-strength and high-toughness medium-manganese steel based on warm rolling and deep cryogenic treatment and a preparation method thereof. The preparation method comprises the following steps: combining a specific warm rolling process (720 DEG C~760 DEG C) with liquid nitrogen deep cryogenic treatment (soaking for 0.3~0.6h) and supplementing low-temperature tempering (180 DEG C~220 DEG C). The process induces deformation through warm rolling, promotes the transformation and refinement of austenite into martensite in combination with deep cryogenic treatment, and then eliminates internal stress and precipitates fine carbides through low-temperature tempering, so as to synergistically control the microstructure. The technical bottleneck that the strength and plasticity of traditional medium-manganese steel are difficult to be compatible is effectively solved, and the organization is super-refined and the stability is improved. The obtained medium-manganese steel has a good match between ultra-high strength and excellent plasticity, the yield strength is greater than 1800MPa, the tensile strength is as high as 2300MPa, the elongation after fracture is more than 17%, and the comprehensive mechanical properties are significantly improved.

The utility model relates to a slidable rope adjusting pull piece assembly, solved the problem that long pull rope pull piece structure easy usability declines currently, include: pull rope, the pull rope has first rope end, second rope end, fixed pull piece body, the fixed pull piece body has the base portion in the center and the wing portion extending by the base portion to both sides, first rope end with second rope end respectively embeds fixed in both end wing portion, with first rope end with second rope end between pull rope forms the rope loop part, movable pull piece body, the movable pull piece body is the hollow structure with the through channel, the rope loop part is worn in the through channel to make the movable pull piece body movable sleeve set on the rope loop part, with the rope loop part is divided into the handle loop part between fixed pull piece body and movable pull piece body and the connecting ring part at the rope loop part free end. The utility model is applied to the pull piece accessory product in zipper.

The invention discloses a knotless braided rope ring which comprises a rope body formed by braiding a plurality of strands of wires, and the rope body has structural elasticity and continuous inter-wire gaps and is integrally formed by a first insertion section, a first receiving section, a second receiving section and a second insertion section which are sequentially arranged. And the first and second insertion sections respectively penetrate through and are fixed in the line-to-line gaps of the second and first receiving sections, so that the rope body is connected end to end to form a ring. By means of the arrangement of the structure, in the using process, when the annular structure bears axial tension, the first containing section and the second containing section contract in the radial direction so that the second inserting section and the first inserting section which are arranged in the first containing section and the second containing section in a penetrating mode can be tightly pressed in the radial direction, and huge friction meshing force is generated due to extrusion between plied yarns of the inserting sections and the containing sections; therefore, stable mechanical self-locking is achieved, and finally the high-strength rope ring which does not need to be knotted, is not provided with a metal connecting piece and is tightened after being stressed is formed.

The utility model discloses a hexagonal handle safety catch mortise lock box which comprises a paper box column body plate, folding lines are reserved on the paper box column body plate, the paper box column body plate is divided into six plates through the folding lines, and the six plates are the first plate, the second plate, the third plate, the fourth plate, the fifth plate and the sixth plate in sequence from right to left. The upper end of the first plate is connected with a regular hexagon upper cover, the lower end of the first plate is connected with a regular hexagon lower cover, the upper end and the lower end of the second plate are both connected with first edge pressing blocks, and the middles of the upper end and the lower end of the third plate are both fixedly connected with second inserting pieces. The hexagonal handle safety catch inserting lock box is convenient to fold, the stability after assembly is improved in a safety catch inserting mode, the hexagonal handle safety catch inserting lock box is made of materials including the corrugated buffering layer, the first fiber reinforcing layer, the second fiber reinforcing layer, the outer waterproof layer and the inner waterproof layer, and the service life is prolonged.

The invention provides a high-bending-resistance moisture-proof corrugated board which sequentially comprises a paper core layer, a middle layer and a surface layer from top to bottom, honeycomb-shaped elastic rods and staggered supporting corrugations are embedded in the paper core layer, raw materials of the paper core layer comprise small paper balls made of 30% bamboo wood pulp and waste paper residues, and the diameter of each small paper ball is smaller than or equal to 20 mm; the surface layer comprises a mixed layer of sisal fibers and abaca fibers, the ratio of the sisal fibers to the abaca fibers is 3: 1-5: 1, the surface of the surface layer is coated with a dynamic waterproof layer, the dynamic waterproof layer is composed of hydroxylated graphene modified polyacrylate emulsion, and the mass ratio of slurry to a waterproof agent is 40: 1; and the interlayer is a glass fiber gridding cloth composite layer. The compression resistance is improved, the rebound resilience is enhanced, and the moisture absorption problem of the core layer is effectively solved.

The utility model relates to the technical field of low-temperature tank trucks, in particular to a molecular sieve device for a low-temperature tank truck, which comprises a shell with a sealed cavity formed inside, a molecular sieve accommodated in the sealed cavity, an actuating device and an opening structure arranged on the shell, a sealing component arranged at the opening structure, and a sealing component arranged on the shell by applying external acting force through the actuating device. The sealing assembly is damaged, so that the molecular sieve is communicated with the vacuum interlayer through the opening structure to adsorb gas; the molecular sieve device for the low-temperature tank car is arranged in the vacuum interlayer, so that the shell does not need to bear the pressure of the inner container, a lighter and thinner structural design can be adopted, the material cost and the self weight of the device are directly reduced, and the problems that the wall is thick and heavy and the cost is high due to pressure bearing are solved; the process of trepanning and reinforcing is omitted, the installation process is simplified, meanwhile, the structural strength of the end socket is prevented from being damaged, the problems that installation is tedious, and the strength of the end socket is affected are solved, and the reliability and economical efficiency of maintenance of the vacuum interlayer of the low-temperature tank car are integrally improved.

The application provides a preparation method of TC32 titanium alloy fine-grain rod material with high impact toughness, and relates to the technical field of metal material hot working, and comprises the following steps: step one, selecting a TC32 titanium alloy ingot; step two, high-temperature beta zone cogging forging; step three, alpha+beta two-phase zone intermediate forging; step four, multi-pass radial forging; and step five, double annealing heat treatment. The application provides the preparation method of the TC32 titanium alloy fine-grain rod material with high impact toughness, and through the whole-process collaborative control of "high-temperature beta zone cogging, two-phase zone forging, multi-pass radial forging, furnace heat supplement, and controlled slow cooling double annealing", primary alpha phase fine-grain (2-5 microns) and secondary alpha phase homogenization are realized; while the tensile strength is ensured to be not lower than 950 MPa, the impact toughness is stably improved to be higher than 90 J / cm2, and the highest impact toughness is 110 J / cm2, which is greatly improved compared to the prior art with the impact toughness of 80 J / cm2; the method takes into account high strength and excellent impact resistance, and has uniform structure and controllable process.

The present application relates to the technical field of high polymer materials, in particular to a kind of insole rubber composite modified material and preparation method thereof.The insole rubber composite modified material of the present application is prepared by natural rubber, styrene-butadiene rubber, zinc oxide, stearic acid, antioxidant, filler and halloysite nanotube loaded with blowing agent etc. through banburying process;The halloysite nanotube loaded with blowing agent is obtained by chlorination of halloysite nanotube first, then reacting with dimethylallylamine and 4-(dimethylamino) benzenesulfonic acid, and finally loading blowing agent.The present application realizes the stable crosslinking network of modified nanotube and rubber matrix through the synergistic effect of chemical bonding and electrostatic adsorption, and realizes the site loading of blowing agent, solves the technical problem that traditional insole material cannot consider high toughness and breathable comfort.

This invention discloses a hierarchical porous alumina material, its preparation method, and its application. The alumina material has a spherical core-shell structure, with mesoporous alumina as the core and macroporous alumina as the shell. The pore size distribution of the alumina material exhibits hierarchical pore distribution characteristics, wherein the pore volume of 6-15 nm pores accounts for 20% to 50% of the total pore volume, and the pore volume of pores larger than 20 nm accounts for not less than 40% of the total pore volume. The preparation method of the hierarchical porous alumina material includes the following steps: (1) calcining boehmite to obtain alumina particles; (2) mixing and dispersing surfactant, hydrocarbon-containing compound, and alumina particles evenly to obtain a first feed stream; (3) mixing aluminum sol, emulsifier, curing agent, and additives evenly to obtain a second feed stream; (4) mixing the first and second feed streams, and then further molding, aging, extraction, washing, drying, and calcining to obtain an alumina composite material. The alumina material of this invention is suitable as a carrier for preparing heavy oil hydrogenation catalysts with hierarchical pores and acidic distribution, and can be further used in heavy oil hydrogenation processes.

This invention relates to a supersulfate cement concrete based on construction waste aggregate and minerals, and its preparation method. The concrete, by mass, comprises 380-460 parts supersulfate cement; 950-1250 parts modified mixed aggregate; 0-150 parts natural sand; 135-165 parts water; and a water-reducing agent at 0.7-1.2% of the total mass of the cementitious materials. The modified mixed aggregate is obtained by mixing construction waste and calcium vanadium stone enrichment at a mass ratio of (85-92):(8-15), followed by sequential modification with alkali solution, silane coupling agent, and slag. The present invention achieves a construction waste aggregate replacement rate of 70-100%, requires no complex modification equipment or processes, is easy to scale up for industrial production, and is highly practical.