52results about How to "Change aperture" patented technology

The invention discloses a waterproofing agent capable of enhancing waterproofing performance and water impermeability of concrete, which is composed of the following components in percentage by weight: 3% of alum, 11% of copper sulfate, 30% of fly ash, 4% of polycarboxylic acid water reducing agent, 26% of expanding agent, 0.6% of air entraining agent, 0.4% of alkyl sodium sulfonate, 17% of silica fume, 2% of epoxy resin, 1% of 6-dehydroprogesterone and 5% of lineae ablicantes arrowroot leaf powder. The fly ash is first-grade fly ash; the expanding agent is an alunite expanding agent EA-L, U-type cement expanding agent UEA, composite expanding agent CEA or calcium aluminate expanding agent AEA; and the air entraining agent is a non-rosin air entraining agent. The waterproofing agent can reduce the porosity, promote the hydration of the cement, enhance the density of the concrete, reduce the shrinkage of the concrete and improve the comprehensive durability of the concrete.

The invention relates to a method for preparing bamboo charcoal with a controllable aperture. The method comprises the following steps: cutting bamboo, selecting a middle section of cut bamboo which is more than 1m above the ground for drying treatment, controlling the water content of the bamboo to be less than 20%, placing the bamboo in a high-temperature furnace, feeding high-purity nitrogen or argon into the high-temperature furnace at a flowing rate of more than 5L / min to carry out deoxidization, then, raising the temperature of the high-temperature furnace to 400-1,500 DEG C at a speed of 3-40 DEG C / min, charring at the constant temperature for 1 to 8h, naturally cooling the high-temperature furnace to the room temperature after the thermal decomposition and the charring are finished, taking the product out and grinding, controlling the fineness of the product to be more than 20 meshes, and modifying the pore structure to obtain the bamboo charcoal with the controllable aperture. Compared with the prior art, the method is simple in preparation process, can effectively reduce the production cost by pressure maintaining and charring and effectively improve the adsorption capability of the bamboo charcoal by adopting the pore structure modification; moreover, the prepared bamboo charcoal can be suitable for application scenarios of different adsorbates, and is wide in application range.

The invention discloses a technology for processing special materials such as waste plastic and wood, belonging to utilization of waste. The adopted materials, such as waste plastic, nylon, rubber, chemical fiber, vegetable fiber, asbestos, waste and varied wood, bamboo, crop straw and the like, all belong to utilization of waste. To strengthen the physicochemical properties of the product, heat fusible plastic and the like are subject to heat fusing and processing, wood, bamboo, crop straw and the like are subject to pyrolysis and destructive distillation for removing other fraction or oil or non-fiber matters to change the molecular structure, the apertures among the fiber are enlarged, and comprehensive processing of enhancing the viscosity with heat fused plastic is carried out to obtain the matter; the matter is fully agitated with the heat fused plastic and rubber (under heat preservation for standby use), according to need, keel, namely, metal filaments or non-fusible fiber warp and weft filaments are added, non-fusible fiber filaments (short) are inlaid, and according to actual need, fire retardant, intensifier, foaming agent, pigment and the like can be added. The invention has scientific design and reasonable formula, can be directly poured into a die to be made into a product, and can be manufactured into various section bars of round, square, plate and tube shapes, can be manufactured by planning, sawing, riveting and the like as the same as the traditional modes, and also can be processed into slurry for standby use.

The invention provides a gas throttling simulator comprising an airflow roaring path with a first end and a second end arranged in opposite; a passageway penetrating the airflow roaring path from the first end to the second end is arranged in the airflow roaring path; the airflow roaring path comprises a plurality of roaring path units fixed through connectors; each roaring path unit is provided with a channel; when the roaring path units are fixed through connectors, the roaring path channels are connected to form the passageway; the simulator also comprises a throttling room and a detection part; the throttling room is detachably arranged on the first end of the airflow roaring path, and comprises a first chamber connected with the passageway of the airflow roaring path; the first chamber comprises a first portion with a cross section area bigger than that of the passageway of the airflow roaring path; the detection part is used for detecting the gas before and after the throttling; the gas throttling simulator can provide stronger throttling effect.

The embodiment of the invention discloses imaging equipment and an aperture control method of the imaging equipment. The imaging equipment comprises at least two apertures, a motor and a processor. And the processor selects a target aperture matched with the current ambient light of the imaging equipment from the at least two apertures and sends an aperture switching instruction to the motor, andthe aperture switching instruction is used for instructing the motor to switch the current aperture of the imaging equipment to the target aperture. According to the embodiment of the invention, the aperture of the aperture is accurately changed by switching the aperture.

The invention relates to the technical field of foaming materials, and provides a high-molecular polymer foaming material as well as a preparation method and application thereof. The preparation method comprises the following steps: introducing pores into a polymer, then carrying out supercritical CO2 foaming on the obtained porous polymer, and increasing the diffusion rate of CO2 and accelerating the time from gas dissolution to the saturation of the polymer by utilizing the high specific surface area of the porous polymer. The method provided by the invention is not only suitable for thin film foaming, but also suitable for sheet polymer foaming, is also suitable for various different types of polymers, and is wide in application range. The interior of the prepared polymer foam material is in a hierarchical pore shape, the polymer foam material has the advantages of being high in environment and interior interconnection, low in surface energy, large in specific surface area, high in mass transfer efficiency and the like, hierarchical pore polyetherimide can be applied to the field of friction lubrication, and the oil content and the oil retention rate at a high rotating speed can be remarkably improved due to the existence of hierarchical pores.

The invention discloses a 3D printing gradient aperture medical porous metal bone tissue scaffold, which aims to overcome the disadvantages of the prior art that the single and repeated microporous structure is not conducive to the growth of bone tissue, and the bone tissue implant is difficult to achieve bone healing with its own bone. The problem is that it is a hexahedral structure as a whole, which is composed of components A, B and C closely arranged, component A is arrayed on the outermost layer of the hexahedral structure, component B is arrayed on the second outer layer, and component C is arrayed on the innermost layer; components A, Both component B and component C have a hexahedral frame structure, and the aperture of component A is larger than that of component B, and the aperture of component B is larger than that of component C. The present invention manufactures tissue engineering bone scaffolds with gradually changing pores by strengthening the structural design, regulates the ingrowth of bone tissue and fibroblasts through the gradually changing pores, and finally achieves the best bone healing.

The invention belongs to the technical field of hydraulic pumps and discloses a man-powered hydraulic pump with a high-reliability. The man-powered hydraulic pump comprises a cylinder body, a valve body, an oil inlet hole, an oil suction valve chamber, an oil outlet valve chamber and an oil outlet hole, wherein the oil inlet, the oil suction valve chamber, the oil outlet valve chamber and the oiloutlet hole are communicated in sequence and are arranged in the valve body; an oil suction sealing ball is arranged on an oil inlet of the oil suction valve chamber; the oil suction sealing ball is sealed and plugged in the oil inlet of the oil suction valve chamber through a first elastic assembly arranged in the oil suction valve chamber; compared with the prior art, the oil conveying speed ofthe man-powered hydraulic pump is improved by multiple times, the pressure maintaining performance is obviously improved, and the device can be designed to be portable.

The invention discloses a preparation method of a renewable low concentration CO2 high efficient absorption material, and aims to provide a preparation method of a renewable low concentration CO2 high efficient absorption material which has the advantages of low energy consumption, good absorption selectivity, and large absorption quantity of low partial pressure CO2. The technical scheme comprises the following steps: preparing silica sol and an amino siloxane solution, evenly mixing the silica sol and the amino siloxane solution, then mixing the mixed sol with dimethyl silicone oil, stirring to form suspension liquid, stirring at the same temperature of the sol until gel is formed; then heating the mixture to a temperature of 40 to 60 DEG C, allowing the mixture to stand still for aging for 1 to 9 days at a temperature of 40 to 60 DEG C, filtering to obtain the spherical gel; and finally putting the spherical gel and ethanol into supercritical drying equipment to dry the gel. The prepared renewable low concentration CO2 high efficient absorption material has the advantages of good uniformity, high nitrogen content, high specific surface area, large pore volume, and large CO2 absorption capacity.

A method for preparing a rice husk-based negative electrode material, belonging to the field of biomass energy chemical industry, the specific steps are: (1) pulverizing the rice husk and hydrolyzing it with dilute acid at 100°C-120°C for 0.5h-1h to prepare xylose solution and hydrolyzed slag ; (2) The hydrolysis slag is impregnated with zinc chloride and activated to prepare the primary negative electrode material; (3) The C / SiO2 porous negative electrode material is prepared by modifying the electrode pitch. Compared with the prior art, the advantages of the method of the present invention are as follows: (1) using rice husk as a raw material, using dilute acid hydrolysis pretreatment, regulating the ratio of carbon and silicon, and solving the problem of inner and outer silicon dioxide in pyrolytic carbon. The distribution of carbon and carbon is not uniform, and there are large pieces of carbon in the inner layer. Due to the different microstructure, the problem of lithium intercalation and delithiation is not synchronized to reduce the specific capacity; (2) the use of pitch to treat the primary negative electrode material improves the conductivity; The carbon structure improves the anti-powdering ability; the surface functional groups are covered to avoid leakage current and improve cycle stability.

The invention provides a biomass nanomaterial porous microsphere and a preparation method thereof. The biomass nanomaterial porous microsphere mainly comprises a biomass nanomaterial, nano manganese dioxide, nano titanium dioxide and sodium alginate, has a rich pore structure, and has the pore diameter of 10-600 microns. The microsphere has super-strong capability of adsorbing and degrading cationic dyes, can be regenerated through short-time ultraviolet irradiation, and has the characteristic of reusability.

The invention belongs to the technical field of hydraulic pumps, and discloses a high-reliability manual hydraulic pump, which includes a cylinder body, a valve body, and an oil inlet hole, an oil suction valve chamber, an oil outlet valve chamber and an oil outlet hole connected in sequence. The oil inlet hole, the oil suction valve chamber, the oil outlet valve chamber and the oil outlet hole are all arranged in the valve body, and an oil suction sealing ball is arranged on the oil inlet of the oil suction valve chamber, and by being arranged in the The first elastic member in the oil suction valve chamber seals the oil suction sealing ball on the oil inlet of the oil suction valve chamber; compared with the prior art, the oil delivery speed of the manual hydraulic pump of the present invention is doubled , The pressure holding performance has also been significantly improved, and it can be designed to be portable.

A porous sound absorption material and a processing method thereof. The invention is characterized in that porous sound absorption material is formed by several layers of sheet material with micro channel structure through combination and superposition pasting, a plurality of holes vertical to the superimposed and pasted sheet materials are arranged on the porous sound absorption material, a plurality of parallel micro channels are arranged in each layer of micro channel sheet material, and micro channels between two adjacent layers of micro channel sheets are mutually perpendicular to each other or at different angles. The processing method is as below: using a thermoplastic polymer as a raw material; extruding, stretching and forming the material by an extrusion device with a specially designed headpiece; then setting, rolling and cutting, and choosing an appropriate number of superposition according to the application need; and finally opening holes with different diameters to obtain the porous sound absorption material. The porous sound absorption material provided by the invention has double characteristics of porous foamed material and resonance plate structure, high and low frequency sound absorption function, excellent comprehensive performance; and the processing technology is simple, environment-friendly and low in cost.

The present invention is applicable to the technical field of nanofiber membranes, and provides a method for controlling the pore structure of nanofiber membranes, which comprises the following steps: preparing a polymer spinning solution; adding a regulator to the polymer spinning solution for mixing and dispersing to obtain regulating solution; the regulating agent includes nano silicon dioxide, polyethylene glycol, myristic acid, isobutyl triethoxy silicon, water; after filtering the regulating solution, electrospinning is carried out to obtain a nanofibrous membrane . In the present invention, after adding a regulating agent to the polymer spinning solution, and then performing electrospinning, the pore structure of the nanofiber membrane can be adjusted by adjusting the amount of the regulating agent added, so as to change the pore size and Porosity. This control method can realize the control of the pore structure of the nanofiber membrane only by changing the addition amount of the regulator, and it can realize a wide range of control of the pore size and porosity of the nanofiber membrane without changing the process parameters of electrospinning .

The invention discloses a tool for crimping wire lugs and relates to the technical field of electric construction equipment. The tool comprises an upper clamping plate and a lower clamping plate, and a plurality of pressing plates are stacked vertically between the upper clamping plate and the lower clamping plate. The two adjacent pressing plates are hinged by the first hinge shaft, and the pressing plates are provided with grooves. When the two adjacent pressing plates are in the closed state, the grooves on the adjacent two pressing plates jointly form a complete crimp holes. Between the upper clamping plate and the lower clamping plate, a tension rod is arranged on the front side of the pressure plate, the lower end of the tension rod is hinged to the lower clamping plate, and the upper clamping The front end of the plate is provided with a U-shaped notch for accommodating the tension rod, and the tension rod is provided with a locking nut. This tool not only saves labor, but also can ensure the uniformity of pressing, so that the wire and the wire lug are fastened together, and it is not easy to slip off.

The invention discloses a sintered synthetic slag, which comprises the following raw materials in weight percentage: 10-15% of high-adsorption filler, 25-35% of CaO, and 10-20% of SiO 2 , 8‑10% MgO, 6‑10% FeO, 1‑2.5% CaF 2 , 0.01-0.03% of P, 5-8% of water, 3-5% of aluminum iron balls, and the balance is impurities; the invention also discloses a preparation method of sintered synthetic slag; CaO and SiO 2 Grind into powder, then add water, MgO, FeO, CaF in sequence 2 , P, high-adsorption filler, mixed uniformly and made into a spherical shape, the particle size is controlled to be 50-60mm, and then mixed with aluminum-iron balls and then transferred to a high-temperature furnace for firing. The temperature of the high-temperature furnace is controlled at 1200-1300°C, The sintering synthetic slag was prepared in 3 hours; the high-adsorption filler can remove the hydrogen and floating oxidized slag inside the molten steel to make the molten steel more pure, and its own strong adsorption performance can absorb the slag. And quickly escape from the melt to improve the purity of molten steel.

The invention relates to a preparation method a lithium ion battery, particularly relates to a conductive agent applicable to a lithium iron phosphate material and a preparation method of the conductive agent, and mainly solves the technical problems in the prior art that the utilization rate of an active material is low, the residual capacity of an electrode is great and the like caused by great inner resistance and not enough discharging depth of the lithium iron phosphate electrode. The method provided by the invention comprises the following steps: under a constant-temperature condition, slowly adding conductive carbon black into a dispersant and a salt solution; heating and agitating to form a rheological phase; putting the rheological phase into a high-temperature furnace and heating; in a heating process, introducing inert gas all the time and cooling the rheological phase to the room temperature along with a furnace; washing with a strong acid and filtering; drying in a vacuum box under a high-temperature condition to prepare the treated conductive carbon black; and mixing a carbon nano tube, the conductive carbon black and conductive graphite according to a mass ratio of (0.1-1) to (0.1-5) to (0.1-1) to prepare the conductive agent.