50results about How to "Stress resistance" patented technology

The invention provides high-temperature-resistant elastic cement paste applied to thermal production well cementing. The cement paste is prepared from the following raw materials in parts by weight: 100 parts of oil well cement, 35-40 parts of a high-temperature stabilizer, 4-6 parts of a fluid loss agent, 2.4-3.6 parts of a dispersant, 3-6 parts of a reinforcing agent, 0.3-0.5 part of a retarder,0.2-0.6 part of high-temperature-resistant fiber, 4-6 parts of a high-temperature-resistant inorganic flexibilizer, 2-4 parts of a high-temperature-resistant organic flexibilizer, 0-26 parts of a lightening admixture and 52-78 parts of fresh water. According to the high-temperature-resistant elastic cement paste, the high-temperature stabilizer, the high-temperature-resistant fiber and compound flexibilizers of high-temperature-resistant flexibilizing materials are added into the cement paste system, so that formed hardened cement paste can maintain high compression strength under the long-term action of high temperature, and also can maintain high elasticity under the actions of periodic high temperature and low temperature of the thermal production well.

The invention relates to the technical field of pipe connection. A technical problem to be solved is to provide a plastic pipe connecting method, by which connection is firm and reliable, the sealing performance is good and the service life is prolonged. The plastic pipe connecting method comprises the following steps: treating end parts, butting by hot melting, cool for the first time, butting by electric melting, cooling for the second time, performing two-time injection moulding, cooling for the first time and flattening a surface. Through hot melting butting, electric melting butting, two-time injection moulding and three different processes, electric melting sleeves and two pipes are fused, connected and strengthened, and the sealing performance of a whole pipe system and the structural strength after connection can be borne by a hot melting butting area, an electric melting fusing area and a two-time injection moulding area together, so that a triple sealing, strengthening and protecting effect is achieved, and the safety and the reliability of the whole pipe system can be greatly improved, therefore, the service life of the whole pipe system is prolonged.

The invention discloses a double-layer composite tube and a manufacturing method thereof. The double-layer composite tube and the manufacturing method aim to solve the technical problems that black pigment is added into traditional HDPE tubes, accordingly inner walls are not smooth, water scale is prone to being generated, bacteria grow, and secondary pollution of water is caused. The double-layer composite tube comprises an inner layer and an outer layer, the inner layer is made of ultrahigh molecular weight polyethylene and ethylene-vinyl alcohol copolymers or low-density polyethylene, and the outer layer is made of high-density polyethylene, ethylene-vinyl alcohol copolymers and special melanin particles C of PE. The method includes the following steps of material proportioning and dehumidifying, material plastifying, material forming, vacuum sizing and spraying and cooling. The double-layer composite tube has the advantages of being good in toughness and flexibility, high in chemical stability, good in corrosion resistance, good in sealing performance, large in distribution power, long in service life, high in low temperature resistance, hygienic, free of toxin and the like. The manufacturing method is simple, easy to operate and capable of achieving integral production of the double-layer composite tube.

Provided is an oxide semiconductor configured to be used in a thin film transistor having high field-effect mobility; a small shift in threshold voltages against light and bias stress; excellent stress resistance. The oxide semiconductor has also excellent resistance to a wet-etchant for patterning of a source-drain electrode. The oxide semiconductor comprises In, Zn, Ga, Sn and O, and satisfies the requirements represented by expressions (1) to (4) shown below, wherein [In], [Zn], [Ga], and [Sn] represent content (in atomic %) of each of the elements relative to the total content of all the metal elements other than oxygen in the oxide.

(1.67×[Zn]+1.67×[Ga])≧100   (1)

{([Zn]/0.95)+([Sn]/0.40)+([In]/0.4)}≧100   (2)

[In]≦40   (3)

[Sn]≧5   (4)

The invention relates to a method for planting lawn plants by combining rare earth cerium with mixed culture matrices. The method comprises the step of sowing seeds of lawn plants on mixed culture matrices for lawn planting, wherein 1.5-2kg of mixed culture matrix soil contains 200-800mg/Kg of rare earth cerium, and the mixed culture matrices refer to soil and municipal solid waste compost in a ratio of parts by weight of 4: (1-2). By applying a certain amount of rare earth cerium, the activities of protective enzymes of the lawn plants can be obviously improved, and the defence capability of the protective enzyme system can be enhanced, thus improving the drought resistance of the lawn plants. Efficient and low-cost operation modes in large-area municipal lawn planting are expected to be achieved through the application of the technology.

The invention provides a home decoration toilet pipe-side floor drain treatment process. The treatment process comprises the steps of S1, digging out a groove in the concrete floor around the root of a pipeline, removing residue in the groove and cleaning the groove by use of water, S2, coating the groove with an interface waterproof agent once or twice under the condition of moist, S3, evenly mixing a multifunctional emulsion with quick-setting cement in the weight ratio of (0.3-0.5): 1 into a paste, applying the paste into the groove, and compacting and trowelling, S4, after the filler in the groove is solidified, coating the root and the four sides of the pipeline with a secondary pipe fixation waterproof glue. According to the home decoration toilet pipe-side floor drain treatment process, at least three waterproof layers, namely the interface waterproof agent layer, the mixed layer of the multifunctional emulsion and the quick-setting cement, and the waterproof layer of the pipe fixation waterproof glue are provided. Due to triple waterproofing operations, the waterproof effect is excellent and the service life is long.

The present invention provides a touch panel and a manufacturing method thereof. According to the touch panel, an integral flexible substrate is adopted for finishing touch control, wiring and electric connection function are realized. The flexible substrate comprises a touch control area, a connecting terminal area and a wiring area. The wiring area at least partially surrounds the touch control area. The connecting terminal area integrally projects out of one side of the flexible substrate and is used for electrically connecting with a main board. The touch panel of the invention can totally save an additional flexible circuit board which is required in the well-known touch panel. According to the manufacturing method for the touch panel provided by the invention, induction rows of the touch control area and wirings of the wiring area and the connecting terminal area can be simultaneously formed on the integral flexible substrate, thereby greatly reducing cost, shortening manufacturing labor hour and human resource, and improving yield rate.

The invention provides a normal temperature two-component liquid crack pouring adhesive, which is a polyurethane two-component A-B type liquid crack pouring sealant. Specifically, the component A is aprepolymer prepared by chemical synthesis of a variety of materials including methylenediphenyl diisocyanate (MDI), polyether polyol, chlorinated paraffin, dioctyl phthalate, etc; the component B isa mixture of asphalt, polyether polyol, chlorinated paraffin, polyisobutylene, a crosslinking agent, a coupling agent, a catalyst, a drier, light calcium powder and other materials. During use, the component A and component B are fully mixed in certain proportion and then directly poured into pavement cracks, thus obtaining the pavement crack pouring and sealing material with the advantages of high cohesive force, high adhesion, high wear resistance, high weatherability and rapid curing. And the two-component liquid crack pouring sealant can be used for various cracks on asphalt and cement pavements.

The invention relates to an anticorrosive pipeline repairing sheet, relating to the technical field of heat shrinkage anti-corrosive materials designed for crafter anticorrosion joint coating of a buried or overhead steel pipeline. The anticorrosive pipeline repairing sheet is characterized in that the pipeline repairing sheet has a layered structure, the first layer is a polyolefin substrate layer, and a hot-melt adhesive layer is arranged on the polyolefin substrate layer; the polyolefin substrate layer is made from high-density polyolefin treated by cross linking radiation; the polyolefin substrate layer is coated on a three-layered polyethylene anticorrosive pipeline; the hot-melt adhesive layer has the seal property. The invention aims to provide an anticorrosive pipeline repairing sheet having the advantages of water proofing, acid proofing, alkali proofing, corrosion resistance, simple structure and low manufacturing cost.

The invention discloses a pipeline damage repairing sheet and relates to the technical field of thermal shrinkage anti-corrosion materials designed for anti-corrosion repairing of a welded junction of an embedded or overhead steel pipeline. The pipeline damage repairing sheet is of a laminated structure, wherein the first layer of the pipeline damage repairing sheet is a polyolefin base material layer, a hot melt adhesive layer is arranged on the polyolefin base material layer, the polyolefin base material layer is made from high-density polyolefin subjected to crosslinking radiation, a two-layer polyethylene anti-corrosion pipeline is coated with the polyolefin base material layer, and the hot melt adhesive layer has a sealing property. The pipeline damage repairing sheet is resistant to water, acid, alkali and corrosion, simple in structure and low in manufacturing cost.

A railway vehicle, comprising a roof (2) which is formed with an opening (16) communicating with a passenger compartment (6) of the vehicle; a movable air conditioner (10) mounted over the roof (2). The air conditioner (10) comprises an air outlet (14) arranged oppositely to the opening (16). The vehicle also comprises a joining device (18) placed between the air outlet (14) and the opening (16).The joining device is arranged to allow air hermetically flow to the passenger compartment (6) through the opening (16) from the air outlet (14), and comprises a flexible body arranged to guarantee air to flow when roof (2) and the air outlet (14) of the air conditioner (10) are movable relative to each other.

The present invention regards a metal composition suitable for originating a joint (22) by means of welding with a borosilicate glass for a solar collector (10). The composition, expressed in weight percentage, comprises the following alloy elements Table 1 and it is such that 45.5 = (Ni+Co) = 46.5, and that (Ti+Ta+Zr) = 4 x C, the remaining part being made up of iron, apart from the inevitable impurities. The invention also regards: a metal ring (20) made of the metal composition described above and suitable for originating a metal-glass joint by means of welding; the metal-glass joint thus obtained; and the tubular solar collector (10) thus obtained.

The invention discloses a polymer composite adhesive, an application thereof, a lithium ion battery anode material prepared based on the polymer composite adhesive and a preparation method, and belongs to the technical field of electrochemistry and new energy materials. The adhesive is dissolved in a dispersion medium to form a solution with concentration of 0.5%-2.0%, wherein the dispersion medium is deionized water, and the mass ratio of a linear polymer to a lamellar polymer is (6-16): (1-4). The lithium ion battery anode slurry using the composite adhesive is prepared from an active material, a conductive agent and the adhesive in a mass ratio of (50-80): (10-30): (10-20). The adhesive is composited from the linear polymer and the lamellar polymer, the polymer composite adhesive can construct a cross-linked three-dimensional network structure around silicon particles, the silicon particles are effectively prevented from irreversible slippage, volume change is buffered, and electrical connection and integrity of electrodes are maintained. The composite adhesive adopts widely sourced raw materials and is green and environmentally friendly.

The invention provides a novel mounting bracket of a pilot and brake travel switch. The novel mounting bracket of the pilot and brake travel switch is characterized by comprising a mounting end and acantilever, wherein one side face of the mounting end is a shaft box end connecting face, the opposite other side face of the mounting end is a travel switch mounting face, and the lower portion, relative to the travel switch mounting face, of the cantilever is provided with a longitudinally inward oblique plane as a pilot mounting face. The novel mounting bracket of the pilot and brake travel switch has the advantages that by designing that the mounting end is connected to the end of a shaft box instead of the end of a non-framework, the weight is lighter; the lower portion, relative to the travel switch mounting face, of the cantilever is provided with the longitudinal oblique plane as the pilot mounting face so that obstacles can be smoothly removed from a track, and the stress caused by the obstacles from different directions can also be resisted; reinforcing ribs in the mounting end and a slab connected to the bottom of the shaft box end connecting face improve the integral rigidity; the upper edge of the shaft box end connecting face bends outwards, continuous operation can also be ensured under the situation of bolt failure, and the reliability is high; the structure adoptsintegral casting and does not welding, and the manufacturability is good.

The invention provides crystalline graphene, a preparation method thereof and modified asphalt, and the preparation method comprises the following steps: (1) placing high-activity Ca (OH) 2 powder in a reaction furnace, heating to a preset temperature in an inert protective atmosphere, and keeping the temperature; wherein the content of Ca (OH) 2 in the high-activity Ca (OH) 2 powder is not less than 90% by mass, the content of Mg (OH) 2 is 0.1-5% by mass, and the balance is impurities; (2) introducing a carbon source into the reaction furnace, and carrying out chemical vapor deposition reaction to obtain a solid-phase product; (3) carrying out acid pickling on the solid-phase product to obtain a crystalline graphene blank; and (4) placing the crystalline graphene blank in a furnace containing hydrogen or carbon dioxide atmosphere, and performing high-temperature etching to obtain the crystalline graphene. The crystalline graphene can be highly matched with an asphalt mixture, and the high and low temperature performance of asphalt is improved.

The invention discloses a resin-coated inorganic nonmetal fiber composite bundle reinforced and toughened cement-based material and a preparation method thereof, and relates to a cement-based material and a preparation method thereof. The invention aims to solve the problems that inorganic non-metal fibers are easy to break due to too small diameters, active silicon oxide in the inorganic non-metal fibers and alkali in cement are subjected to alkali-silicic acid reaction to cause pulverization and failure, and the like. Therefore, the problems that the inorganic non-metal fiber cannot fully exert the anti-impact effect and the reinforcing and toughening effect in the cement-based material and loses efficacy along with the increase of the service time are solved. The resin-coated inorganic nonmetal fiber composite bundle reinforced and toughened cement-based material is prepared from cement, water, fine aggregate, an additive and a resin-coated inorganic nonmetal fiber composite bundle. The cement-based material further comprises a mineral admixture and coarse aggregate. The impact toughness of the resin-coated inorganic non-metal fiber composite bundle reinforced and toughened cement-based material prepared by the invention is improved by more than 10 times compared with that of a cement-based material doped with non-coated resin.