96results about How to "No loss of strength" patented technology

The invention discloses a compound material used for a high-speed train and a manufacturing method thereof. A strengthening aluminum alloy layer panel with an upper layer of fiberglass and a lower layer of fiberglass is adopted to replace the existing single aluminum alloy panel, and the form of vicarious joint on the inside of the fiberglass strengthening aluminum alloy layer panel by an aluminum alloy thin plate and a high-strengthening fiberglass enhanced epoxide resin layer plate to realize the continuity of the large panels. The compound material of the invention has the excellent qualities of light quantity, high intensity, high anti-fatigue property, high impact damage allowance and high burning resistance property, etc.

The invention discloses a high-temperature-resistant AlN and Al2O3 co-reinforced aluminum-base composite material and a method for preparing the same, and belongs to the technical field of metal-basecomposite materials. The method includes compressing superfine aluminum powder until the porosity of the superfine aluminum powder is appropriate, loading the superfine aluminum powder in jackets, sealing the jackets and drilling the peripheries of the jackets to allow an appropriate quantity air to flow into the jackets; placing the jackets in air furnaces, heating the jackets at the low temperatures and thickening oxidation films; increasing the temperatures until the temperatures reach the high temperatures, generating AlN and Al2O3 from nitrogen and oxygen in the air, sintering powder treated at the high temperatures, and carrying out heat processing on the powder to obtain the high-temperature-resistant AlN and Al2O3 co-reinforced aluminum-base composite material which is an (AlN+Al2O3)/Al composite material with excellent high-temperature strength and heat resistance. The high-temperature-resistant AlN and Al2O3 co-reinforced aluminum-base composite material and the method have the advantages that the air is used as oxygen and nitrogen sources, and complicated equipment can be omitted; risks such as aluminum powder combustion can be prevented, the quantities of oxide and nitride can be easily regulated and controlled, and the high-temperature-resistant AlN and Al2O3 co-reinforced aluminum-base composite material and the method are short in period, low in cost, easy to control and suitable for large-scale industrial preparation.

The invention relates to lightweight flexible pre-printed color corrugated paper board less than or equal to 400 g/m2 and a method of making the same; the paper in the external and internal parts of the corrugated paper board is 125 to 150 grams boxboard; the corrugated base paper with 100 to 150 grams of core paper is sent into the corrugated paper forming module to press into corrugated paper, then two sides of the core paper are coated with a layer of aqueous bond layer; then the 125 to 150 grams external and internal paper is compounded on edges of corrugations at two sides of the core paper, then sent into the drying tunnel to bake such that the aqueous bond layer forms the solid support layer. The invention has the advantages that: firstly, the paper board uses three-layer corrugated paper board to replace the five-layer corrugated paper board, which has little material consumption, light weight and high strength; secondly, the paper board makes the color effects of the corrugated paper like the high-level color printing effect similar to offset printing; thirdly, the paper board ensures that the strength of the corrugated paper board and the paper box formed therethrough are not damaged.

The invention provides an alkali-free accelerator for additive manufacturing buildings, structures or components thereof. The alkali-free accelerator is prepared by a method which comprises the following steps: a magnesium-containing compound and/or an aluminium-containing compound is thrown in an aqueous solution of fluosilicic acid, or a magnesium-containing compound and/or an aluminium-containing compound is added into the aqueous solution of fluosilicic acid, and an optimal method is as follows: the magnesium-containing compound and/or an aluminium-containing compound and water are stirred in order to prepare suspending liquid, and then the aqueous solution of fluosilicic acid is slowly added into the suspending liquid; and at least one kind of polyhydroxyl dispersion reinforcing agent is optionally added. The accelerator has a long stable storage life, and has superior rapid hardening effects and long-term strength maintenance performance for cement-containing cementing agents.

The invention discloses a display device and a display driving method. The display device comprises a backlight module, a display panel arranged at a light outgoing surface of the backlight module, ablue light source arranged in the backlight module and a display driving circuit arranged on the display panel, and is characterized in that the first blue light wavelength of the blue light source isgreater than 440nm; the display driving circuit stores a blue light gamma curve of the blue light source; and the display driving circuit corrects the blue light source according to the blue light gamma curve. The display device can reduce influences imposed on the eyesight by blue light and improve the display image quality at the same time.

In a method for bleaching fibrous articles by impregnating the fibrous articles with oxidizing or reducing agent solutions and irradiating the impregnated fibrous articles with ultraviolet or visible light, the oxidizing or reducing agent solutions are re-added one or more times to the fibrous articles while they are being irradiated with ultraviolet or visible light.

The invention relates to a method for preparing a waterproof and high-strength oil well plugging agent through a miniemulsion method. The method includes: dissolving ammonium persulfate in deionized water, and then disposing the deionized water into a reactor at temperature of 70-75 DEG C; adopting modes of mechanical stirring and ultrasonic treating to introduce a ketone-hydrazide crosslinking system and a fluorine-containing monomer into an emulsion; preparing a plugging agent through a miniemulsion polymerizing method, dropwise adding the emulsion and initiator water solution for thermal reaction for 2h, cooling, using ammonia water to adjust pH to 7.5-8.5, adding a certain amount of adipic dihydrazide, stirring and discharging to obtain the oil well plugging agent. The oil well plugging agent is prepared by adopting a mode of miniemulsion polymerizing, so that under the condition of same consumption, strength of downhole crack plugging can be ensured, and existence of a lot of water exerts small influence on plugging strength of the oil well plugging agent.

The invention discloses a method for enhancing flexibility of pure cotton fabrics and relates to the technical field of pure cotton fabrics. The method for enhancing flexibility of pure cotton fabricscomprises the following steps: (1) adding the pure cotton fabrics into water for heat treatment, and drying; (2) soaking the pure cotton fabrics with water to form a dripless state, tiling the fabrics on a flat worktable, flattening the pure cotton fabrics by a flat plate, and hanging up; (3) adding a soft preparation into water to be uniformly mixed, atomizing by an atomizer, and spraying onto the erected pure cotton fabrics; (4) baking the pure cotton fabrics sprayed with the soft preparation by a baker; and (5) seaming the baked pure cotton fabrics under saturated vapor pressure, cooling,tiling on the flat table-top, and heating and drying by using high infrared radiation. The flexibility of the prepared pure cotton fabrics is greatly increased, the fabrics can also maintain excellentflexibility after washing, and the breathability and strength of the pure cotton fabrics are not damaged, so that the wearing comfort is increased.

According to the PU protective film for the display screen manufacturing process and the preparation method of the PU protective film, a macromolecular chain is formed and a complex net-shaped structure is constructed through a grafting modification method, and a hyperbranched structure and a fluorine-containing structure are introduced into polyurethane, so that the prepared protective film has relatively good cohesion and relatively high peel strength; the advantages of low-viscosity climbing, no precipitation residue, good exhaust performance, no glue overflow in laser cutting and the like are achieved; allyl glycidyl ether is used as a monomer, anionic ring-opening polymerization and thiol-ene click reaction are utilized to introduce flexible alkyl into a side chain, alkyl functionalized poly (allyl glycidyl ether) in which an antistatic agent is added is prepared, the glass transition temperature of the PU protective film is reduced, the interaction of components in the PU protective film is enhanced, and the antistatic property of the PU protective film is improved. The toughness of the PU protective film can be obviously improved while the strength of the PU protective film is not lost, meanwhile, the surface resistivity of the PU protective film is effectively reduced, and more excellent aging precipitation resistance and antistatic effect are embodied.

The invention discloses a multi-degree-of-freedom light single-leg mechanism. The multi-degree-of-freedom light single-leg mechanism comprises a hip joint module, a knee joint module, an ankle joint module, a shin joint and a foot end; the hip joint module, the knee joint module, the ankle joint module, the shin joint and the foot end are connected in sequence; the whole single-leg design mode disclosed by the invention greatly improves the adaptability of the robot legs to complex terrains, improves the dynamic and static stability of a robot, and also improves the integral bearing capacity and control precision of the robot; the single leg with multiple degrees of freedom has flexible movement and light weight; the installation position of a driving motor is closer to the body, so that the problem of high rotational inertia easily generated by a tail end joint is solved, and the movement of the driving mechanism is facilitated; and the single leg has a large movement working space range in the aspects of mechanism movement and power.

A form-aldehyde removing agent is proportionally prepared from water, 2-amino-2-ethyl-1-3-propanediol, Na2S2O3, Na2So3, pvA-1788, water-soluble edible essence, photocatalyst and assistant.

An embodiment of a PCD insert comprises an embodiment of a PCD element joined to a cemented carbide substrate at an interface. The PCD element has internal diamond surfaces defining interstices between them. The PCD element further comprises a working surface and a low melting point region adjacent the working surface in which the interstices are at least partially filled with a low melting point metallic material having a melting point of less than about 1,300 degrees centigrade at atmospheric pressure, or less than about 1,200 degrees centigrade at atmospheric pressure. The PCD element includes an intermediate region, the interstices of the intermediate region being at least partially filled with a catalyst material for diamond.