43results about How to "Moderate thickness" patented technology

The invention provides a preparation method of a polyolefin hollow fiber membrane, which comprises the following steps: S1, spinning: melting and extruding a polyolefin material to obtain a semi-molded product; s2, cooling crystallization: carrying out cooling crystallization on the semi-formed product to obtain nascent fibers; s3, primary shaping: carrying out heat setting treatment to obtain a heat-set semi-finished product; s4, cold drawing and hole forming are conducted, specifically, cold drawing treatment is conducted to obtain a cold-drawn semi-finished product; the cold drawing elongation rate is 20-40%, and the cold drawing rate is (10-30)% / min; s5, hot drawing and chambering are conducted, the hot drawing elongation rate is 2-6 times of the cold drawing elongation rate, and the hot drawing rate is not higher than 15% of the cold drawing rate; and S6, secondary setting: carrying out secondary heat setting treatment to obtain the hollow fiber membrane. According to the present invention, the rapid-drawing and less-drawing cold drawing process is adopted to cooperate with the slow-drawing and more-drawing hot drawing process, such that the porosity of the inner layer can be substantially improved on the basis of ensuring the compact degree of the skin layer, and the high dimensional stability of the prepared membrane filament can be ensured by the drawing process so as to achieve the service life and the degassing effect accidentally at the same time.

The invention discloses a cultivation and production technology of a flue-cured tobacco variety Yuzhou 201. The cultivation and production technology comprises the following steps: (1) selecting a tobacco field; (2) performing winter ploughing and ridging; (3) sowing time; (4) scientific transplanting; (5) balanced fertilization; (6) field management; (7) tobacco field plant protection; (8) harvesting; and (9) tobacco leaf baking. The tobacco leaves planted and harvested through the method are high in quality, sensory evaluation results show that the smoking quality of the tobacco leaves meets industrial requirements, and the overall sensory quality of the tobacco leaves planted through the method shows that the tobacco leaves are rich and comfortable in fragrance, good in fragrance quality, obvious in sweetness, high in fragrance amount, high in smoke concentration and moderate in strength; the high-quality strong-flavor tobacco leaf raw material is high in quality, low in irritation, comfortable in aftertaste, small in offensive odor and high in overall smoking quality, and meets the requirements of high-grade cigarettes.

The invention provides a silicon-based negative electrode material, a preparation method of the silicon-based negative electrode material, a dry-method electrode, a battery and electric equipment, and belongs to the technical field of battery manufacturing. The silicon-based negative electrode material is of a core-shell structure, an inner core is a silicon-based material, a shell is a cross-linked polymer layer, the cross-linked polymer layer can conduct ions but cannot conduct electrons, the silicon-based negative electrode material can effectively inhibit PTFE from generating side reaction with lithium ions on the surface of a negative electrode, and meanwhile, the service life of the silicon-based negative electrode material is prolonged. And the problems of electrode pulverization, falling and the like caused by volume expansion of the silicon-based material in the charge-discharge process can be effectively solved, so that the corresponding battery has relatively excellent first discharge gram capacity, first efficiency and cycle performance.

The invention discloses a planting management method of flue-cured tobacco variety Heiluo No.1, and relates to the technical field of flue-cured tobacco planting, comprising the following steps: (1) tobacco field selection; (2) performing winter ploughing and ridging; (3) sowing time; (4) scientific transplanting; (5) balanced fertilization; (6) field management; (7) tobacco field plant protection; (8) harvesting; the tobacco leaves planted and harvested through the method are high in quality, the smoking quality requirement of the tobacco leaves is reflected through a sensory evaluation result, and the overall sensory quality of the tobacco leaves planted through the method shows that the tobacco leaves are rich and comfortable in fragrance, good in fragrance quality, obvious in sweetness, moderate in fragrance amount, medium in smoke concentration, moderate in strength and small in irritation; the tobacco is a high-quality tobacco raw material which is comfortable in aftertaste, light in offensive odor and high in overall smoking quality and meets the requirements of high-grade cigarettes.

The invention discloses a three-dimensional porous current collector as well as a preparation method and application thereof, belongs to the technical field of a sodium metal battery current collector, and solves the problem that the electrochemical performance of a metal sodium battery without a negative electrode in the prior art is not ideal enough. The three-dimensional porous current collector comprises a copper substrate and bismuth nanosheets vertically grown on the surface of the copper substrate, wherein the copper substrate is of a net structure, and the bismuth nanosheet is of a three-dimensional honeycomb structure. The three-dimensional porous current collector provided by the invention has ultra-stable sodium deposition stripping performance and excellent long cycle stability.

The invention relates to preparation of an intelligent self-repairing iron-nickel-based corrosion-resistant alloy material, which comprises the following steps: synthesis of acrylic resin, preparation process of microcapsules, pretreatment of a magnesium alloy substrate, preparation of an acrylic resin coating, preparation of an electro-deposition iron-nickel alloy, preparation of a precursor ceramic repairing agent, and preparation of the intelligent self-repairing iron-nickel-based corrosion-resistant alloy material. An electrodeposition method, a solution polymerization method and a coating preparation method are creatively combined, the prepared intelligent self-repairing iron-nickel-based corrosion-resistant alloy material is a high-strength and high-hardness alloy material, and the intelligent self-repairing iron-nickel-based corrosion-resistant alloy material has the advantages of self-repairing function, corrosion resistance, wear resistance and high hardness.

The invention provides a fire-resistant cable production and processing method, which belongs to the technical field of cable processing equipment and comprises the following steps of raw material preparation, wire drawing, reaming, inner layer coating, coating and outer layer coating. According to the invention, the metal wire core is coated with the double-layer refractory material and is coated with the refractory coating, so that the fireproof performance of the cable is greatly improved.

The invention relates to a preparation method of a magnesium alloy mu-DIC speckle and a characterization method and application thereof. The preparation method comprises the following steps: 1) carrying out electrolytic polishing on a to-be-detected surface of a magnesium alloy sample until the to-be-detected surface is bright and free of scratches; 2) mixing the SiO2 suspension with alcohol according to a certain volume ratio, and performing ultrasonic dispersion to obtain a diluent; 3) placing the polished sample in a diluent for ultrasonic treatment, and then cleaning the sample with alcohol to obtain uniformly dispersed and distributed speckles; the whole preparation of the speckles is a physical process, the sample is not damaged or the properties of the sample are not changed, and the speckles prepared by the method do not interfere with the collection of other signals on the surface of the sample, so that the practicability of EBSD and DIC results is improved; the preparation method has the advantages of being simple, easy to operate, efficient, ultralow in cost and the like, the magnesium alloy material can be applied under the room temperature, high resolution and large view field, and the bottleneck problems that the magnesium alloy sample speckle preparation difficulty is large, and compatibility of the DIC technology and the EBSD technology cannot be achieved at the same time are solved.

The utility model discloses a kind of automatic post-treatment equipment of bolt hot galvanizing, belong to metal surface treatment technical field, it includes the mechanical arm for grabbing work, centrifuge and truss manipulator for throwing away excess zinc liquid, the mechanical arm and centrifuge are all located truss manipulator side, the mechanical arm is located centrifuge rear, cooling pool, passivation pool and blanking conveyor are respectively installed below the truss manipulator, and the passivation pool is located cooling pool and blanking conveyor adjacent side, wherein, it further includes zinc plating basket for containing workpiece, the zinc plating basket outer diameter is less than centrifuge inner diameter, in the utility model, adopt mechanical arm, truss manipulator and blanking conveyor and other automation equipment, the seamless docking of bolt hot galvanizing post-treatment process equipment is realized, to effectively improve the automation degree of device whole, to greatly reduce manual operation, greatly avoid the situation of low production efficiency and low capacity caused by manual operation.

The flow sensor comprises a first substrate, a thin film assembly and a second substrate, the first substrate is provided with a cavity penetrating in the first direction, the cavity is provided with a first cavity opening and a second cavity opening, and the thin film assembly is connected to the front side of the first substrate and comprises a first thin film area and a second thin film area. The orthographic projection of the first film area and the orthographic projection of the cavity on the projection plane perpendicular to the first direction coincide with each other, the first film area seals the first cavity opening, the orthographic projection of the second film area and the orthographic projection of the cavity on the projection plane perpendicular to the first direction are staggered with each other, and the second film area covers the front face of the first substrate. The first film free surface of the first film area is recessed inwards relative to the second film free surface of the second film area, the second substrate is connected to the back side of the first substrate, and the second substrate seals the second cavity opening. The heat loss can be effectively reduced, the device power consumption can be reduced, the device sensitivity can be improved, and the membrane rupture probability in the production process can be reduced.

The invention discloses a production method for anodizing, chambering and corroding an electrode foil, belongs to the technical field of electrode foils, and adopts ultrasonic waves to generate a cavitation effect in liquid, promote a corrosion process and improve uniform hole forming and performance of an aluminum foil. A domestic plain aluminum foil of 132 microns is used, and proper holes are obtained through three-stage treatment of alkali washing, hole-forming corrosion and chambering corrosion and hole-forming corrosion of a mixed solution composed of sulfuric acid and hydrochloric acid. The polyethyleneimine is added into a reaming phosphoric acid solution to slow down corrosion, aluminum foil holes subjected to three-stage treatment contain Cl <->, metal impurities, phosphoric acid and the like, corrosion is caused to products, and the quality of oxidation films is reduced. Impurities are cleaned through dilute nitric acid, a compact and firm oxidation film is obtained, then sol-gel coating and subsequent formation treatment are carried out, the anode formation chambering corrosion electrode foil is obtained, and the specific capacitance of the foil is effectively improved.

The invention belongs to the technical field of chip processing, and particularly discloses a method for keeping concentricity of a pressure film and a steel ring in the pressure film, which comprises the following steps: carrying out dust and oil removal treatment on the steel ring, carrying out sand blasting treatment on the surface of the steel ring, carrying out ultrasonic cleaning, taking out, blowing clean, baking with an oven, and removing moisture; the surface of the steel ring is pretreated, and the steel ring is soaked in a silicon adhesive solution, taken out and dried; vacuum hot compression molding: after mold assembly is completed on a flat plate molding vulcanizing machine, a jig is put into a mold, a steel ring is put into the jig, and then five strip-shaped silica gel materials are put into the surface of the steel ring for vacuum hot compression molding; and quality detection. According to the method for keeping the concentricity of the pressure film and the steel ring in the pressure film, the steel ring does not deform and keeps the concentricity by changing a material placing mode and equipment parameters, wafer grinding is prevented from being affected, meanwhile, a mold does not need to be opened or modified again, and the purpose of reducing the research and development cost of new products is achieved.

The present invention relates to the technical field of grinding mills, and provides a vertical grinding mill, including a machine body, a grinding disc assembly, a grinding roller assembly and a pretreatment assembly. The machine body is provided with a window for the grinding roller assembly to extend into. The grinding roller assembly includes a swing arm assembly, a grinding roller body and a sealing frame. The sealing frame is fixed on the swing arm assembly. The grinding roller body passes through the sealing frame and is rotated on the swing arm assembly through a rotating shaft. The pretreatment assembly includes a shaking assembly and a horizontal assembly. The horizontal assembly is arranged above the grinding disc assembly in front of the grinding roller body, and the shaking assembly and the grinding disc assembly vibrate in coordination. The addition of the pretreatment assembly can ensure the consistency of the material thickness through the horizontal assembly, so that the grinding force of the grinding roller on the grinding disc is consistent, and the fineness of the ground material is consistent. At the same time, the shaking assembly can ensure that the material is evenly distributed on the grinding disc, and ensure that the grinding roller crushes the material more evenly, thereby improving the pretreatment quality of the material and creating better conditions for the subsequent grinding process.

The invention discloses an electro-optic paint for a bicycle and a spraying process thereof, and particularly relates to the technical field of paints.The electro-optic paint comprises a backboard paint, a medium paint, a luminous paint and a transparent conductive paint which are sprayed in four layers. By controlling the construction conditions, the paint film is uniform and proper in thickness, so that the characteristics of uniform luminescence of the paint surface and bright lighting effect are achieved. Autonomous light emitting is achieved through the coating, a better warning effect can be provided for a vehicle body compared with a reflector or a flashing light, the weight of the vehicle body is effectively reduced under the same effect, and the vehicle is safer and more environmentally friendly.

The invention discloses xylooligosaccharide fruit juice popping capsules and a preparation method thereof. The xylooligosaccharide fruit juice popping bead comprises a compound colloid coating and a fruit juice core material, the coating comprises sodium alginate, carrageenan and guar gum, the fruit juice core material comprises green extract juice, white granulated sugar or high fructose corn syrup, a thickening agent, calcium lactate, purified water and xylooligosaccharide, and the coating and the core material are prepared by scientifically proportioning the raw materials, so that the raw materials synergistically play a role. And adopting a reverse spheroidizing technology to obtain the fruit juice popping bead. According to the xylooligosaccharide fruit juice popping bead provided by the invention, the popping bead contained in the popping bead is bright and glossy in color, round and full in ball shape, high in transparency, moderate in sour and sweet taste, appropriate in coat thickness, obvious in pulp popping feeling, rich in natural fruit juice and functional oligosaccharide, higher in nutritional value and beneficial in effect, and when the popping bead is matched with a fruit tea beverage for eating, the taste is unique; the tea is nutritional, healthy and suitable for people of all ages.

According to the universal bearing lubricating grease for the wind generating set and the preparation method of the universal bearing lubricating grease, low-viscosity PAO, high-viscosity PAO, ester oil and alkyl naphthalene are selected as base oil, a composite lithium-calcium thickening agent, a tackifier, an antioxidant, a friction reducing agent, an extreme pressure agent, an anti-rust agent, a corrosion inhibitor and other additives are used as auxiliary materials, the obtained lubricating grease is high in universality, and the universal bearing lubricating grease has the advantages of prolonging the service life of a bearing and improving the service life of the bearing. The method has positive significance in reducing maintenance cost, improving power generation efficiency and economical efficiency, simplifying grease varieties, facilitating maintenance and the like.

The utility model provides a flocking fabric which comprises a base cloth layer which is a needle-punched non-woven fabric. The adhesive layer is positioned on the surface of the base cloth layer; the fluff layer is positioned on the surface of the adhesive layer and comprises polyamide fibers; the composite material has the advantages of proper thickness, favorable tear resistance, favorable light fastness, high touch feeling and excellent wear resistance, can be widely applied to automotive interior materials, including but not limited to parts such as ceilings, skylights and door plates, and meets the requirements of subsequent processing, thereby being more suitable for being applied to automotive interiors.

The invention discloses a method for preparing a tin oxide film by chemical bath deposition based on inert atmosphere protection, which comprises the following steps of: firstly, adding a precursor solution into a reaction container in which a conductive substrate is placed, filling inert gas and then sealing; wherein SnCl2 and SnCl4 are contained in the precursor solution; and heating the sealed reaction container, depositing a thin film on the surface of the conductive substrate, taking out the thin film, and sequentially carrying out cleaning, ultrasonic treatment and annealing treatment. Nitrogen atmosphere protection is adopted, the deposition process is prevented from being influenced by oxygen partial pressure, SnCl4 is introduced to precisely regulate and control the proportion of Sn < 2 + > to Sn < 4 + >, and an adjustable SnOx film with moderate thickness can be prepared more quickly, so that precise regulation and control of a SnOx energy band structure are realized. The SnOx thin film prepared by the method shows an adjustable energy band structure, the photoelectric conversion efficiency of the perovskite solar cell exceeds 26%, and the SnOx thin film has excellent industrial application value and prospect.

The utility model discloses a high elasticity composite waterproof nylon yarn, including the body, said body includes base layer, waterproof layer, fireproof layer and skin-friendly layer, the base layer is woven by nylon yarn, first stretch yarn and second stretch yarn through the intertwining mode, nylon yarn, first stretch yarn and second stretch yarn form the cross section twining structure of Chinese character'mi '. The fireproof layer and the waterproof layer are arranged on the outer side of the base layer, the fireproof layer is made of the high-temperature-resistant fire-resistant rubber material, the waterproof layer is formed by weaving polyester fiber yarns and coated with the waterproof agent, and good fireproof and waterproof effects can be achieved; the base layer is formed by intertwining and weaving polyamide yarns, first stretch yarns and second stretch yarns, has good elasticity, can be torn and is not easy to break; the skin-friendly layer is made of polyimide interlock cloth, is high in softness and does not hurt the skin, and the waterproof and fireproof fabric has waterproof and fireproof performance, high elasticity and skin-friendly characteristics and is suitable for popularization.

The utility model relates to the technical field of endoscopes, and discloses an endoscope insertion tube and an endoscope, and the endoscope insertion tube comprises a metal elastic layer, a metal braid layer and a self-repairing layer. The self-repairing layer comprises a self-repairing resin layer and a self-repairing coating layer; the self-repairing resin layer is arranged outside the metal braid layer, the self-repairing coating layer is arranged outside the self-repairing resin layer, and the material of the self-repairing coating layer comprises a coating with self-repairing capability. The outer surface of the endoscope insertion tube with the structure is the self-repairing layer, when the outer surface of the insertion tube is scratched or damaged due to improper use of an operator, the self-repairing layer can automatically repair the outer surface of the insertion tube under the conditions of heating, illumination or radiation and the like, the outer surface of the insertion tube is convenient to repair, the repairing cost is low, and the service life of the insertion tube is prolonged. The service life of the insertion pipe can be effectively prolonged; when the outer surface of the insertion tube is damaged, the insertion tube does not need to be replaced, so that the repair and maintenance cost of medical equipment can be reduced.

The utility model relates to a device for perfusion of an edentulous jaw model, which comprises a base (1) and a side wall (2), the upper part of the base (1) is open, the lower part of the base (1) is provided with a round triangular hole, the periphery of the base (1) is closed, the base (1) and the side wall (2) define an internal space, and the peripheral corner formed by the base (1) and the side wall (2) is arc-shaped or nearly arc-shaped; the depth from the rear portion of the side wall (2) to the inner space of the base is 29-31 mm, and the depth from the front portion of the side wall (2) to the inner space of the base (1) is 11-13 mm. The depth from the rear part of the side wall (2) of the device to the inner space of the base (1) and the depth from the front part of the side wall (2) to the inner space of the base are properly designed, so that the operation is convenient; and the periphery of the device for model perfusion is designed to be approximately elliptical, so that the holding operation is more convenient, a gypsum model with proper thickness and regular appearance can be obtained, and the gypsum polishing amount and the gypsum consumption are reduced.

The utility model relates to a high-impedance membrane switch. The high-impedance membrane switch comprises an acrylic panel, a first ink layer, a second ink layer, a first double-faced adhesive tape, a circuit layer, a second double-faced adhesive tape and release paper from top to bottom in sequence, wherein a touch key is arranged on the circuit layer; the first ink layer, the second ink layer, the first double-faced adhesive tape, the circuit layer, the second double-faced adhesive tape and the release paper are all provided with nixie tube display windows, all the nixie tube display windows are located at the same vertical position, and the impedance performance of the double-faced adhesive tape is better due to the fact that the double-ink and acrylic panel combination mode is adopted. The acrylic panel is moderate in thickness, small in size and high in brightness, and the electrostatic net is adopted, so that the anti-static effect of the anti-static LED lamp is good.

The invention belongs to the technical field of novel materials, and particularly relates to a method for preparing a functionalized lead halide perovskite quantum dot material stable in a physiological buffer solution and application of the functionalized lead halide perovskite quantum dot material. The preparation method comprises the following steps: S01, dissolving PbX2 and CsX in a hydrophilic organic solvent according to an equal molar ratio; S02, further adding a ligand solution and a hydrophilic polymer, and reacting to obtain a mixed solution; s03, further adding double distilled water into the mixed solution to obtain a precursor solution; and S04, adding the precursor solution into a toluene solution, carrying out stirring reaction, centrifuging, and collecting the precipitate to obtain the functionalized lead halide perovskite quantum dot material stable in the physiological buffer solution.

This invention discloses a secondary design method for the mix proportion of hybrid steel fiber self-compacting concrete based on a customized solid-phase surface filling layer. Starting with a basic mix proportion of fiberless self-compacting concrete, steel fibers are introduced, and a secondary mix proportion design is performed using a secondary design envelope curve to obtain the final mix proportion of the steel fiber self-compacting concrete. This design method can encompass material variations such as different fiber diameters and aggregate systems, and can achieve the mixed incorporation of fibers. This reduces fluctuations in the workability of the mixture caused by material and fiber content, significantly improves stability, optimizes the workability control of fresh self-compacting concrete, greatly reduces the number of mix proportion adjustments, and enables rapid mixing of self-compacting fiber concrete. It provides guidance for the application of fiber concrete and the targeted customization of mix proportions in practical engineering.

The present application relates to the technical field of nanomaterials, and specifically discloses a method for preparing a near-room-temperature vanadium-based nano phase change material. The method includes the steps of pretreatment, grinding, coating treatment and post-treatment, using vanadium pentoxide as a vanadium source, adding tungsten dopants and tin dopants, and coordinating silane coupling agents as dispersants, and adopting wet grinding to obtain a ground wet powder; then the surface of the ground wet powder is coated with a silica gel shell material, and then annealing treatment is performed at 300-720°C to obtain a near-room-temperature vanadium-based nano phase change material. The method of the present application is simple, suitable for large-scale production, and does not require high temperature and high pressure control. The phase change temperature of the obtained near-room-temperature vanadium-based nano phase change material is 25±3°C, and it has excellent stability, high visible light transmittance, and excellent sunlight regulation ability.

The invention discloses a preparation method of colored suede leather base cloth, which comprises the following steps of: blending, melting and spinning by taking PA (Polyamide) slices as island phases and PE (Polyethylene) slices as sea phases to obtain sea-island fibers, needling to form non-woven fabrics, and shaping at high temperature to obtain the base cloth; preparing colored slurry containing a bridging agent and a curing agent, performing dry coating on release paper to form a coating, then laminating the coating with the shaped base cloth, and separating the release paper after drying to obtain composite coating base cloth with a colored surface layer; carrying out wet-process impregnation on the back surface of the composite coating base cloth by adopting impregnation slurry without adding color paste to form a double-layer structure; and splitting, drying, dyeing, buffing, oiling and fixing to obtain the colored suede leather base cloth. According to the preparation method of the colored suede leather base cloth provided by the invention, a product with bright color and high color fastness is prepared by optimizing a production process.

The utility model discloses a spreading device which is used for spreading sand on a layer to be spread, a surface sand spreading device comprises a support frame, a guide roller assembly and a sand hopper, the support frame comprises a first support and a second support, the first support is arranged on one side of the spreading device, and the second support is arranged on the other opposite side of the spreading device; the guide roller assembly comprises a first roller and a second roller, the first roller is rotatably connected to the first support, the second roller is rotatably connected to the second support, and the first roller and the second roller support the support frame; the sand hopper is connected to the first support and the second support and comprises a sand leakage screen arranged at the bottom of the sand hopper. When the first roller and the second roller roll relative to the to-be-spread layer, vibration generated by the first roller and the second roller is transmitted to the sand hopper through the supporting frame.

The utility model relates to the technical field of ballastless track construction, in particular to a high-speed railway bridge waterproof protective layer construction machine tool which comprises an upper frame and a bottom plate, the upper frame comprises a cross beam and a longitudinal beam which are fixedly connected, and an adjusting assembly is arranged between the upper frame and the bottom plate. The adjusting assembly is used for adjusting the distance between the upper frame and the bottom plate, moving assemblies are arranged at the ends of the cross beams and the end of the bottom plate and used for driving the whole construction machine tool to move along a ballast bed of the ballastless track, and cross slopes are formed on the bottom plate from the center to the two sides. The upper end face of the bottom plate is fixedly connected with a vibrator used for vibrating concrete. The problems that the thickness of a protection layer and the drainage gradient are insufficient, and the flatness is not controlled in place can be solved.

The invention discloses a preparation method of a composite electrode, the composite electrode, a photoelectric device and a preparation method thereof, and the preparation method of the composite electrode comprises the steps: preparing a first electrode layer on a substrate through chemical plating, and the first electrode layer comprises a first surface; performing surface roughening treatment on the first surface of the first electrode layer to obtain the first surface after surface roughening treatment; and preparing a second electrode layer on the first surface subjected to acid treatment through a physical coating method to obtain the composite electrode. The preparation method can be used for rapidly and effectively preparing the composite electrode with excellent performance, proper thickness and relatively strong binding force.

According to the peptide for promoting rice bran fermentation and used for the goose feed and the application of the peptide, fresh rice bran is subjected to enzymolysis and fermentation to obtain an enzymolysis and fermentation compound which is used for feeding geese, generated small peptide and intestinal beneficial bacteria can provide better nutrition and are easy to absorb, the disease resistance rate is increased, oxidation of the rice bran can be avoided, and the effect of improving the immunity of the geese is achieved. The storage period of the rice bran is prolonged.