706results about How to "Inhibit expansion" patented technology

The invention discloses a display panel, a display apparatus and a preparation method for the display panel. The display panel comprises a substrate, an organic light emitting device, a thin film packaging layer, and a metal layer, wherein the substrate comprises a display region and a non-display region; the organic light emitting device is arranged in the display region of the substrate; the thin film packaging layer covers the organic light emitting device; the metal layer is positioned in the non-display region of the substrate; grooves are formed in the metal layer; and the grooves are filled with an organic layer. By virtue of setting the metal layer in the non-display region of the substrate, forming the grooves in the metal layer and filling the grooves with the organic layer, bending stress resistance and cutting stress resistance of an edge region are improved, so that risk of cracks on the edge is relieved, and crack expansion can be effectively prevented.

The invention discloses a flexible display panel, a display device and a flexible display panel manufacturing method. The flexible display panel comprises a flexible substrate, a conductive layer in a display area of the flexible substrate, multiple lines in an edge bending area of the flexible substrate, and an organic insulating layer between the conductive layer and the multiple lines on one hand and the flexible substrate on the other hand. The flexible display panel further comprises a first organic insulating layer at least arranged between the multiple lines in the edge bending area of the flexible substrate and the organic insulating layer. The first organic insulating layer is made of cured photoresist. As the first organic insulating layer made of cured photoresist can prevent cracks produced by the inorganic insulating layer from spreading to the multiple lines, the phenomenon of display failure is avoided. In specific implementation, the photoresist can be photoresist applied in the making process of the inorganic insulating layer. Therefore, two Mask processes are omitted, the production cost is saved, and the production efficiency is improved.

The invention discloses a flexible display panel, a display apparatus and a manufacturing method for the flexible display panel. The flexible display panel comprises a flexible substrate, a conductive layer which is arranged on a display region of the flexible substrate, a plurality of routing lines which are arranged on an edge bending region of the flexible substrate, and an inorganic insulating layer which is arranged among the conductive layer, the multiple routing lines and the flexible substrate; the conductive layer is electrically connected with the multiple routing lines; the flexible display panel also comprises a first organic insulating layer which is at least arranged in the edge bending region of the flexible substrate; and the first organic insulating layer is positioned between the multiple routing lines and the inorganic insulating layer. By virtue of the first organic insulating layer, expansion of cracks generated by the inorganic insulating layer to the multiple routing lines can be prevented, so that a phenomenon of display failure can be avoided; and in addition, compared with a technical scheme of adding two Mask processes in the prior art, the flexible display panel disclosed by the invention only needs to add one Mask process of manufacturing the first organic insulating layer, so that production cost is lowered while production efficiency is improved.

The invention belongs to the technical field of laser rapid forming, and particularly relates to preparation of a solid solution toughened wolfram-base composite material. A preparation method of the solid solution toughened wolfram-base composite material is as follows: original mixed powder comprises W (wolfram) powder and TiC powder, wherein the TiC powder is 1-1.5wt percent of the total content; and the mixed powder is ball-milled in a high-energy mechanical ball mill for 30-45 h, and then the TiC/W composite material is formed by using a selective laser melting process. The parameters of the adopted laser process are as follows: the powder-bed depth is 50-60 Mum, the laser spot diameter is 200-210 Mum, the laser power is 120-140 W, the laser scanning rate is 100-300 mm/s, and the laser scanning interval is 120-140 Mum. According to the invention, the solid solution toughened wolfram-base composite material is successfully prepared through the method that combines high-energy mechanical ball milling and the selective laser melting process, and the fragility of W material is effectively improved.

The invention relates to lightweight aggregate concrete for heat preservation of structures, and belongs to the technical field of building materials for civilian use. The lightweight aggregate concrete for heat preservation of structures comprises the following raw materials in parts by mass: 360-460 parts of cement-based cementing material, 410-460 parts of ceramsite, 110-120 parts of modified vitrified micro balls, 15-20 parts of concrete modifier, 260-290 parts of water and 3.6-4.6 parts of water reducing agent. The lightweight aggregate concrete for heat preservation of structures with the heat conductivity coefficient of 0.25-0.4W/(m.K) and the dry apparent density of 900-1200kg/m<3> is obtained by using the modified vitrified micro balls and the ceramsite as aggregates under the synergistic effect of the components according to a reasonable component proportion, and after the lightweight aggregate concrete is cured for 28 days, the compressive strength of the lightweight aggregate concrete is 8-15MPa. The lightweight aggregate concrete for heat preservation of structures has good heat preservation performance and relatively high strength. Compared with the strength of a full lightweight concrete material prepared from ceramsite perlite, the strength of the lightweight aggregate concrete is obviously improved; compared with the heat conductivity coefficient of a full lightweight concrete material prepared from ceramsite pottery sand, the heat conductivity coefficient of the lightweight aggregate concrete is obviously reduced; and the lightweight aggregate concrete can be used as a lightweight aggregate concrete material for heat preservation of structures.

The invention discloses a steam-curing-free early-strength steel fiber concrete pipe segment comprising ordinary Portland cement, early-strength sulphoaluminate cement, fly ash, slag, fine aggregate, coarse aggregate, water, a polycarboxylic acid type water reducer and end hook type steel fibers. The invention also discloses a preparation method of the steam-curing-free early-strength steel fiber concrete pipe segment. The steam-curing-free early-strength steel fiber concrete pipe segment is quick in coagulation and hardening and high in early strength, can reach the strength of 15MPa required by pipe segment demolding in 6-8 hours, and can be prepared into a concrete pipe segment for an underground structure by performing water curing in a 20 DEG C saturated calcium hydroxide solution for 24 hours and then performing natural curing for 28 days. The steam-curing-free early-strength steel fiber concrete pipe segment does not need steam curing, so that the curing mode of the pipe segment can be simplified, the curing time is shortened, a lot of manpower and resources are saved, and the popularization and application values are high.

The invention relates to a method for predicting the high-low-cycle composite fatigue crack growth life of a turbine joggle structure, and the method comprises the steps: (1), building a crack growth model giving consideration to a crack closure effect; (2), determining a high-cycle load stress intensity factor model; (3), determining a low-cycle load stress intensity factor model; (4), judging whether a current cycle is a high-cycle load or not: executing step (5) if the current cycle is the high-cycle load, or else executing step (6); (5), calculating a composite fatigue lower crack increment, judging whether a next cycle is a low-cycle fatigue load or not: obtaining the maximum crack tip opening displacement of the current cycle if the next cycle is the low-cycle fatigue load, and executing step (7), or else executing step (8); (6), calculating the variance of the low-cycle load lower crack tip opening displacement; (7), calculating the residual crack tip opening displacement and crack increment according to the results inputted at steps (5) and (6); (8), updating the crack length, repeatedly carrying out the steps (4)-(7) if the maximum stress intensity factor is less than the fracture toughness, or else completing the calculation, and obtaining the crack growth life.

The invention relates to a method for preparing a WC hard alloy wear resistance area on a petroleum drill rod surface. The method is characterized in that: the method comprises the following steps: (1) carrying out a pretreatment for the petroleum drill rod surface; (2) selecting alloy powder and adjusting an automatic powder feeding device; (3) cladding a bottoming alloy coating by a high power laser; (4) cladding spherical WC and Ni-Cr-B-Si mixed alloy powder by the high-power laser; (5) carrying out defectoscopy inspection after cladding. According to the present invention, the gradient coating method is adopted to prepare the WC hard alloy wear resistance area on the petroleum drill rod surface, the nickel-base alloy powder is adopted as the bottoming layer, the high wear resistance WC hard alloy powder is adopted as the working layer, such that the good binding strength of the working layer and the substrate is ensured in the case of meeting of the working layer characteristics, and the cracks can be prevented from expanding to the substrate during the using process, wherein the nickel-base alloy powder has good toughness and high strength, and has good metallurgy compatibility with the substrate.

The invention discloses a high-strength-toughness and high-temperature hot rolled steel plate and a preparation method thereof. The high-strength-toughness and high-temperature hot rolled steel plate is prepared from the following chemical components in percentage by weight: 0.04-0.15 percent of C, 0.05-0.35 percent of Si, 0.5-2.5 percent of Mn, 0.005-0.025 percent of Ti, smaller than or equal to 1.0 percent of Cr, smaller than or equal to 0.5 percent of Mo, smaller than or equal to 1.0 percent of Ni, smaller than or equal to 0.5 percent of Cu, smaller than or equal to 0.003 percent of B, smaller than or equal to 0.02 percent of P, smaller than or equal to 0.01 percent of S, smaller than or equal to 0.007 percent of N, 0.001-0.006 percent of O, smaller than or equal to 0.03 percent of the total content of elements including Al, Zr, Mg, Ca and rare earth and the balance of Fe and inevitable impurity elements. The preparation method of the steel plate comprises the following steps: smelting and casting according to the components, carrying out high-temperature continuous rolling by adopting an austenite, carrying out accelerated cooling by watering the steel plate after being rolled, and then air cooling to room temperature, wherein the heating temperature of a steel billet is 1150-1260 DEG, the cooling temperature is larger than or equal to 5 DEG C/s. and the finish cooling temperature is 550-650 DEG C . As a microscopic structure of the steel plate is a fined acicular ferrite type structure, the steel plate is good in strength and toughness properties. The preparation method of the steel plate is flexible in process and simple in operation, saves the cost and improves the production efficiency.

The present invention discloses a hot rolling roller for rolling a nonferrous metal, and a manufacturing method thereof. Chemical components of the roller comprise, by weight, 0.50-0.80% of C, 0.30-1.20% of Si, 0.20-1.00% of Mn, less than or equal to 0.025% of P, less than or equal to 0.020% of S, 4.50-6.00% of Cr, 0.20-0.80% of Ni, 0.20-1.00% of Mo, 0.10-0.50% of V, and the balance of Fe and unavoidable impurities. The manufacturing method of the roller comprises the following process steps: a, refining a steel ingot; b, forging a roller blank; c, carrying out quenching and tempering, and carrying out mechanical processing; d, carrying out a quenching heat treatment; and e, carrying out a tempering treatment. The hot rolling roller has characteristics of high wear resistance, good thermal cracking resistance and good electrochemical corrosion resistance, and a service life of the hot rolling roller can be increased by more than 50% compared with the ordinary Cr3 roller.

The invention relates to a process for preparing a rust-bearing rust-proof heavy-duty coating and belongs to the technical field of rust-bearing rust-proof heavy-duty coating preparation. The process comprises the following steps: 1) stirring; 2) grinding; 3) dispersing; 4) preparing a resin; 5) preparing the coating; and 6) stirring. The production process is simple and quick, and the produced coating has high permeability, high solid content and low viscosity and can passivate active and harmful iron compounds in a rust layer into harmless fillers.

The invention provides a formulation composite comprising toxic fluoride phosphate and at least one growth regulator. According to the weight part, the toxic fluoride phosphate accounts for 10%-80% of the formulation composite, the growth regulator accounts for 0.0001%-2% of the formulation composite, the formulation composite also comprises an assistant, an surface active agent, a solvent and a carrier accepted by agriculture, and the formulation composite can be prepared into wettable powder, suspending agent, missible oil, microemulsion, emulsion in water, water dispersible granule, dry suspending agent, seed coating agent and other agents. The formulation composite can be used for preventing and curing tobacco mosaic virus, cucumber mosaic virus, and various virus diseases caused by viruses on rice, such as tobacco mosaic, cucumber mosaic, tomato virus disease, pepper virus disease, rice virus disease and the like and achieves the effects of improving efficacy, treating in a compatible manner, delaying medicine resistance, reducing the using amount of toxic fluoride phosphate and the like.

A process for preparing the porous superfine calcium carbonate includes such steps as respectively preparing the aqueous solution of CaCl2 and the aqueous solution of NH4HCO3 and CO2, isometric colliding reaction while controlling flow and temp, filtering, recovering the mother liquid of ammonium chloride, drying filtered cake, grinding to obtain product, and preparing the ammonium chloride crystals from its mother liquid.

The invention discloses a self-repairing microcapsule used for a metal anticorrosion coating and a preparation method thereof, which belong to the technical field of self-repairing materials. The wall material of the self-repairing microcapsule is urea resin, the core material of the self-repairing microcapsule is natural plant oil, and the self-repairing microcapsule is prepared with a one-step in-situ polymerization method. The natural plant oil has the advantages of wide source and low cost and is easy to obtain. The metal anticorrosion coating is coated on the surface of metal to form an anticorrosion coating. Microcracks appear in the long-term use process, the self-repairing microcapsule embedded in the coating is broken by external force, and released natural plant oil and oxygen in the air can directly generate crosslinking polymerization reaction without catalysts to repair the microcracks to prevent the surface of the metal from being further corroded. The self-repairing microcapsule synthetized by the core material substance has the advantages of good mechanical performance, simple preparation technology and low cost and can be widely applied to the self repairing of metal anticorrosion coatings, such as automobile industry, ship industry and the like.

The present invention relates to a method for controlling desertified land, and starting with the restoring and reconstructing microecologic environment and including the following three steps: (A). making enrichment culture of microbial algae and fungi in the microecologic environment of land block to be controlled; (B) separating out dominant group from them, using modern bio-engineering technique to make large-scale culture, then inoculating the cultured organism into the land block to be controlled; and (C). directly adding nutrient elements necessary for microbial algae and fungi into the land block to be controlled, at the same time planting drought-resistant plants, and utilizing sunshading net to cover and fix then on the controlled land block surface.

The invention discloses a gas shield metal core welding wire used for high-strength steel welding based on a ULCB structure. The gas shield metal core welding wire comprises an outer skin and a flux core. The outer skin is composed of a mild-carbon steel strip. By weight,, carbon accounts for 0.025-0.035% of the mild-carbon steel strip is. The width of the steel strip is 10-12mm, and the thickness of the steel strip is 0.6-0.8mm. The flux core comprises, by the weight, 7-12% of manganese, 3-16% of ferrosilicon, 0.5-2% of chromium, 8-14% of nickel, 2-4% of molybdenum, 0.5-3% of zirconium silicon alloy, 0.5-3.5% of fluoride and 0.5-3.5% of ferrotitanium, and the balance is iron power. The filling rate of the flux core is 15-21%. Mixed gas of argon and carbon dioxide is selected as shielding gas for welding, and the carbon dioxide content is 5-20%. The metal core welding wire has good welding technology performance, formed weld joints are beautiful, the strength of deposited metal can reach 800-950MPa, and impact toughness at the low temperature of 40 degrees below zero can reach above 60J.

The invention relates to a graphene high temperature resistant corrosion-resistant coating for a metallic material and a preparation method of the graphene high temperature resistant corrosion-resistant coating. The graphene high temperature resistant corrosion-resistant coating consists of the following components in parts by weight: 6-12 parts of graphene oxide, 20-45 parts of a phenolic resin,2-6 parts of polyvinyl butyral, 1-4 parts of rare earth chloride, 12-30 parts of graphene quantum dots, 2-5 parts of a heat conduction metallic powder, 3-6 parts of carbon nanotubes, 12-30 parts of asolvent, 2-6 parts of an antioxidant, 5-9 parts of a curing agent and 12-18 parts of a defoaming agent, wherein the graphene quantum dots is 2-4nm in size; the solid content of the phenolic resin is 45-55%. According to the graphene high temperature resistant corrosion-resistant coating provided by the invention, by the virtue of the good dispersibility of the graphene quantum dots in solvents andrelatively good non-covalent functions of the graphene quantum dots with graphene sheets, two-dimensional sheet structures of the graphene can be overlapped layer by layer in the coating, a compact physical insulating layer can be formed, and the corrosion resistance of the coating can be improved.