198results about How to "Improve the diffusion effect" patented technology

An end plate (20) has a fluid inlet hole (27) communicating with a front header (12b) and covered with a fluid diffusing portion (60) which is in the form of a semispherical plate and which has small holes (60a).

The invention provides room temperature self-crosslinking water-based paint as well as a preparation method and an application thereof. The paint has high hardness, high scrubbing resistance and good diffuse reflection performance. The preparation method of the paint comprises the following steps: performing graft modification on alkaline silica sol by utilizing a silane coupling agent containing unsaturated double bonds, thereby obtaining nanosilicon dioxide of which the surface is provided with the unsaturated double bonds; by taking the nanosilicon dioxide as a seed, mixing an acrylate monomer and an epoxy resin in the presence of an initiator, and preparing the room temperature self-crosslinking acrylate emulsion which is subjected to epoxy resin and inorganic particle double modification and has a core-shell structure by utilizing a semi-continuous seeded emulsion polymerization process; and by taking the emulsion as a base material, adding a delustering agent, glass powder, body pigment and paint aids, thereby obtaining the room temperature self-crosslinking water-based paint. The paint is coated on the wall surface or board and can be simultaneously taken as a writing board of a doodling pen and a projection screen of a projector, and the problem that the teaching board and the projection screen are independent from each other and cannot be simultaneously used in the prior art is solved.

The invention discloses a reflection type LED (Light-Emitting Diode) high beam for a vehicle. The high beam comprises a reflector cup, an LED mounting column, a reflector cup bracket and a radiating shell; the inner surface of the reflector cup is a regular curve; the cross section of the LED mounting column is a polygon; the LED mounting column is arranged at the inner side of the regular curve and pointed to the focus of the regular curve; an LED chip is arranged on at least one surface of the LED mounting column and located in the focus of the regular curve; and the reflector cup bracket is arranged between the reflector cup and the radiating shell and used for supporting the reflector cup.

The invention relates to a test system for the extension of a multi-axis and salt-spray corrosion fatigue crack. The test system comprises a fatigue tester for providing I-type, II-type, III-type and compound fatigue loads required by a test for a test sample through a pull-cut-twist multi-axis loading fixture, and further comprises a salt-spray corrosion environmental box, wherein the salt-spray corrosion environmental box comprises a salt-spray corrosion box body and a salt-spray pre-occurrence box body which are mutually communicated through a pipeline; the salt-spray pre-occurrence box body conveys air and salt water required by salt-spray forming to the salt-spray corrosion box body; the salt-spray corrosion box body provides a required salt-spray corrosion environment for the fatigue crack extension test; both the pull-cut-twist multi-axis loading fixture and the fatigue crack extension test sample are positioned in the salt-spray corrosion box body. Through the adoption of the test system, the fatigue crack extension rate and other fracture mechanics parameters under the combined action of multi-axis loads and the salt-spray corrosion environment can be measured relatively well, and thus the material selection design and the service life evaluation for marine engineering equipment serving in the salt-spray corrosion environment and under a complex stress state can be supported.

The invention provides a system and a method for observing micro-nano air bubbles in water body. The system comprises a model box, a laser device, a camera, a lens and a picture acquiring and processing module, wherein the model box is provided with a water filling nozzle, and can be filled with and contain the water body which is rich in micro-nano air bubbles, moreover, each face of the model box adopts different materials and colors, and the imaging definition of the micro-nano air bubbles in the water body is improved to the greatest extent; the laser device is located at the top of the model box, and is used for providing a light source needed for observation; the camera and the lens are arranged on one side of the model box, and are used for observing the micro-nano air bubbles in the water body; and the picture acquiring and processing module is connected with the camera, and is used for acquiring and processing pictures. The system and the method provided by the invention are simple, convenient, practical and high in observation accuracy.

The invention relates to GaN light-emitting diodes with a low-temperature p-type GaN layer. The main difference between the structure of the GaN light-emitting diodes of the invention and the structure of the existing GaN light-emitting diodes is that a low-temperature p-type GaN layer grows between an InGaN/GaN multiple-quantum well active light-emitting layer and a p-type AlGaN electron blocking layer, thereby physically separating the InGaN/GaN multiple-quantum well active light-emitting layer from the p-type AlGaN electron blocking layer on an interface. Results show that the luminous intensity and reverse breakdown voltage of the GaN light-emitting diodes are greatly improved.

The invention provides a formula and a preparation method for a polymer diffuse reflection material, belonging to the field of optical materials and particularly relating to the formula and production and preparation method for a diffuse reflection material for illuminating devices. The polymer diffuse reflection material is characterized in that the diffuse reflection material comprises the following components in parts by weight: 85-97 parts of polymer PC (poly carbonate), 3-15 parts of titanium dioxide, 0.1-0.5 part of antioxygen, 0.5-2 parts of light stabilizer, 0.01-0.05 part of fluorescent brightener, and 0.5-5 parts of a dispersing agent. The polymer is polypropylene (PP), polyethylene glycol terephthalate (PET), acrylonitile-butadiene-styrene (ABS) copolymer, high impact polystyrene (HIPS), polymethyl methacrylate (PMMA) or makrolon PC (poly carbonate). The formula and preparation method have simple technology, the polymer diffuse reflection material can be produced continuously, and the highest reflectivity of the prepared reflection material can reach 102%, wherein the diffuse reflection rate is 96%.

Optical diffusion element comprises a layer of polymer particles self-fused together, each polymer particle having a refractivity varying from the center to the periphery thereof and a component for the periphery having a glass transition temperature that is desirably lower than 100° C. The optical diffusion element is desirably provided with an optical transparent layer in contact with the polymer particle layer.

The invention discloses an air laid machine and belongs to the technical field of non-woven fabric machinery. The air laid machine comprises a cotton feeding mechanism and an airflow uniformizing mechanism connected with the cotton feeding mechanism. A cotton pressing mechanism is stacked on a web forming mechanism, and the web forming mechanism and the cotton pressing mechanism are supported by a terrace or a foundation with the terrace as the carrier at the left side of the cotton feeding mechanism. The airflow uniformizing mechanism comprises a set of draught fans, an air bellow and an air bellow air outlet channel, wherein the draught fans are installed on the upper portion of the rear side of the cotton pressing mechanism at intervals, an air outlet of each draught fan is connected with one end of an air outlet pipe of the corresponding draught fan, the other end of the air outlet pipe of each draught fan is connected with an air inlet of the air bellow, the air bellow is connected with the cotton feeding mechanism at the position corresponding to the top of the cotton feeding mechanism, the air bellow air outlet channel is formed after an air outlet in the bottom of the air bellow extends, and an air channel outlet of the air bellow air outlet channel extends to the cotton feeding mechanism. The air laid machine has the advantage that due to the fact that an airflow uniformizing plate is arranged in the air bellow air outlet channel and located at the position corresponding to the air channel outlet, the fiber uniformizing effect is improved, and it is ensured that the thickness of a cellucotton web layer is uniform.

The invention provides an image sensor and a manufacturing method thereof. The manufacturing method comprises the following steps of forming a shallow trench isolation structure in a semiconductor substrate; forming a doping layer surrounding the shadow trench isolation structure in the semiconductor substrate; and forming a photosensitive area of a photoelectric diode at one side of the shadow trench isolation structure, wherein the doping layer is arranged between the shadow trench isolation structure and the photosensitive area. According to the image sensor and the manufacturing method thereof provided by the invention, the formed dark current of the complementary metal oxide semiconductor (CMOS) image sensor is small, and the imaging quality of the CMOS image sensor is improved.

The invention relates to the technical field of EVA photovoltaic films, in particular to a three-layer EVA and PO composite photovoltaic film with high reliability and high gain. The composite photovoltaic film is prepared from an upper transparent EVA layer, a middle white reflective EVA layer and a lower transparent PO layer, wherein the upper transparent EVA layer is a transparent EVA casting composite layer with thickness of 25-150 mu m; a pyramid-shaped reflective structure with thickness of 250-550 mu m is arranged on the surface of the middle white reflective EVA layer; the lower transparent PO layer is a transparent EVA casting composite coextrusion layer with thickness of 50-225 mu m. After the method is adopted, the EVA and PO composite photovoltaic film with high reliability andhigh gain has the characteristics of high bonding strength with battery pieces, good package reliability and long service life, and has higher light emission rate and better reflection effect than conventional white EVA films. After the front surface of the structure is subjected to irradiation crosslinking, the surface structure cannot be melted by heating in the lamination process, integrity ofthe high reflection structure is guaranteed, the diffuse reflection effect of reflected light rays among gaps of battery pieces is improved, and accordingly, assembly power is greatly improved.

The invention discloses a method for recycling hydrogenation catalyst waste. The method comprises the following steps: (1) alumina support waste and/or the hydrogenation catalyst waste are/is smashedand sieved, powder obtained after sieving is pulped, slurry with solid content being 15wt%-55wt% is obtained, a nitric acid-phosphoric acid-organic acid mixed solution is added with stirring, the obtained solution is heated to 65-100 DEG C, kept at the temperature for 30-90 min and cooled to room temperature, then organic amine is added, the solution is mixed uniformly, and sol slurry of the wasteis obtained; (2) the sol slurry of the waste in step (1), alumina powder and an extrusion aid are mixed uniformly, then mixed kneading, forming, drying and roasting are performed, and an alumina support is obtained; (3) an active component is supported on the alumina support, and a hydrogenation catalyst is obtained. With adoption of the method, the hydrogenation catalyst waste can be recycled effectively, wastewater and waste residues are not produced, pollution to the environment is avoided, and the catalyst prepared with the method has higher catalytic activity.

The invention provides a preparation method of a hydrogenation catalyst. According to the method, a part of active metal components and an organic complexing agent are introduced in a carrier moldingprocess, a carrier is molded through a certain calcining treatment procedure, and then a subsequent active metal soaking step is performed to obtain the hydrogenation catalyst. According to the hydrogenation catalyst prepared with the method provided by the invention, active metals are dispersed uniformly; the preparation method is simple and feasible, and is particularly suitable for an ultra-deep hydrodesulfurization reaction of diesel oil.

The invention discloses a thin roof ventilator which comprises a plurality of rows of parallel structured trusses. Outer guard plates are arranged around the structured trusses. The thin roof ventilator is characterized in that each row of structured trusses is provided with a plurality of ventilation units. Middle V-shaped rain baffles are connected between opposite ventilation units in each row. Partitions, upper v-shaped rain baffles and V-shaped catch channels are arranged between each two adjacent rows of ventilation units respectively. Windshield valve plates are hinged to each two adjacent rows of structured trusses. The thin roof ventilator has the advantages that the thin roof ventilator has natural load-carrying capacity, base materials can be saved greatly, manufacturing and installation ways of products are simplified, standardization and popularization are easy; the thin roof ventilator has the function of automatically adjusting wind shielding, external air can be prevented from flowing back, rain is prevented from leaking, unattended ventilation can be achieved; the thin roof ventilator has the function of replacing a roof, allows for large-area ventilation and lighting for buildings, is effective in ventilation and lighting and is highly functional in wind shielding regulation.

The invention discloses a diffusing method for conchospore of porphyra haitanensis, comprising the following steps of: firstly, mounting a water pump in a seedling collecting pool in advance, arranging a mature shell of a sporosac branch at the bottom of the pool, and paving multiple layers of nylon rope nettings in the water above the shell; secondly, pumping water in the seedling collecting pool by using the water pump to flow the water, and returning the water pumped by the water pump so that the water in the whole seedling collecting pool flows; thirdly, blowing the side from the bottom of the pool upwards by using a blast blower through an aerating pipe with a wall hole so that the water in the seedling collecting pool is surged to stir the water, the shell and the nylon rope nettings of the whole seedling collecting pool, and impacting the shell by the water flow, wherein the conchospore on the sporosac branch of the shell is much active through stimulation, and the conchospore is diffused from the sporosac branch of the shell to be attached on the nylon rope nettings. The method has good diffusing effect, high diffusing efficiency and high labor efficiency; moreover, the method saves time and labor.

The invention relates to a tree trunk whitening agent.The tree trunk whitening agent is characterized by being prepared by stirring, by weight, 15-20 parts of quick lime, 6-10 parts of micropore foaming glass pumice particles, 3-5 parts of white cement, 3-5 parts of sulphur powder and 30-40 parts of water.The diameter of the micropore foaming glass pumice particles is 0.5-2 mm.The diameter of micropores of the micropore foaming glass pumice particles is 0.1-1 mm.The invention further relates to a preparation method of the tree trunk whitening agent.The tree trunk whitening agent has the advantages that tree trunk breathability can be improved, and a dried and fixed coating is not likely to fall or crack.

The invention provides a multifunctional agricultural thin film and a preparation method thereof. The multifunctional agricultural thin film comprises the following components in part by weight: 100 parts of resin, 1 to 5 parts of microencapsulated mouse-proof and insect-proof agent, 5 to 10 parts of nano particles A, 2 to 5 parts of nano particles B, 0.2 to 0.5 part of antioxygen, 0.1 to 0.25 part of light stabilizer and 20 to 40 parts of filler, wherein the microencapsulated mouse-proof and insect-proof agent consists of a capsule core and a capsule covering the capsule core; the capsule core is made of more than one of capsaicine, capsaicine derivative, N-ethyl-2-(isopropyl)-5-methylcyclohexanecarboxamide or N-ethyl-2-(isopropyl)-5-methylcyclohexanecarboxamide derivative; and the capsule is made of melamine formaldehyde resin with a particle size of 35 to 55 mu m. The preparation method disclosed by the invention is simple and efficiency, and the agricultural thin film has good mouse-proof, insect-proof, self-cleaning and diffuse-reflection effects; meanwhile, the production cost is lowered, the service life of the agricultural thin film is prolonged, and the application range of the agricultural thin film is enlarged.

The invention discloses the production equipment of a multi-H-shaped coarse-denier porous POY filament and a manufacturing method thereof. The production equipment comprises spinning box bodies, a ring blowing cooling device, an oiling device, a spinning channel, a winding machine and a plurality of heating medium pipeline system devices used for melt conveying in a spinning process, wherein the spinning box bodies, the ring blowing cooling device, the oiling device, the spinning channel and the winding machine are successively arranged from top to bottom. The manufacturing method comprises the following steps of using the above production equipment to produce; making molten polyester melt pass through the melt pipes of the heating medium pipeline system devices to enter into each spinningbox body; after passing through a metering pump and a spinning component, extruding a nascent fiber; and passing through the ring blowing cooling device, the oiling device and the spinning channel, finally winding into a spinning cake. A temperature in the spinning box bodies can be rapidly increased, and the temperature can be accurately controlled, balanced and uniformed, product quality is ensured, energy consumption is reduced, and production efficiency and the abnormity degree of products are increased, which is good for rear channel processing.

The invention provides a diffuser plate which comprises at least two single diffusion layers, and each single diffusion layer comprises a diffusion particle layer and a light refracting layer arranged above the diffusion particle layer, and the light refracting layer comprises at least one protruding microstructure; the direction of the light penetrating the diffuser plate is defined as the first direction, and the diffusion particle layer comprises an initial single diffusion layer and a wide angle single diffusion layer distributed in the first direction; and the wide angle single diffusion layer comprises a wide angle protruding microstructure with a semicircular section. Compared with the prior art, the diffuser plate provided by the invention achieves multi-layer diffusion of the in-light by increasing the number of the single diffusion layer, the diffusion effect of the in-light is improved; and as the microstructure shape of the wide angle single diffusion layer of the out-light is changed, the positive visual angle of the diffuser plate is improved, and the out-light effect of the diffuser plate is further improved as well.

The invention provides a method for manufacturing a transistor. The method comprises the following steps of: providing a semiconductor substrate, wherein a doping trap is formed inside the semiconductor substrate; sequentially forming a dielectric layer and a polysilicon layer on the semiconductor substrate; performing at least one ion implantation on the polysilicon layer, wherein during the at least one ion implantation, the conductive type of the doped ions in one ion implantation is consistent with the type of the transistor; etching the polysilicon layer to form a grid; etching the dielectric layer to form a grid dielectric layer; forming side walls on two sides of the grid; and forming a source region and a drain region inside the semiconductor substrate on the two sides of the grid by taking the grid and the side walls as masks. By the method, the grid resistance of the transistor is reduced, the RC time constant of the transistor is reduced, the speed of the transistor is improved, and the power consumption of the transistor is reduced.

The invention discloses a gate structure, a forming method of the gate structure, a semiconductor structure with the gate structure and a forming method of the semiconductor structure. The forming method of the gate structure comprises the steps that a semiconductor substrate is provided; a stack structure is formed on the surface of the semiconductor substrate, wherein the stack structure comprises a gate oxide layer located on the surface of the semiconductor substrate and polysilicon gate located on the surface of the gate oxide layer; carbon ion implantation is conducted on the top of the stack structure and the surface of the side wall of the stack structure; nitrogen ion implantation is conducted on the top of the stack structure and the surface of the side wall of the stack structure; first monox layers are formed on the top of the stack structure and the surface of the side wall of the stack structure. Due to the fact that nitrogen ions and carbon ions implanted into the polysilicon gate can serve as impurity traps, the enhanced diffusion effect of foreign ions, close to the surface, of the polysilicon gate is restrained, the dosage concentration of the foreign ions, close to the surface, of the polysilicon gate and the dosage concentration of foreign ions inside the polysilicon gate are the same almost, and the resistance of the polysilicon gate will not improved.

The invention relates to a weak turbulence uniform air mixing and delivery device. The weak turbulence uniform air mixing and delivery device comprises a fixing device, a fresh air inlet, an returned air inlet, and an air delivery module, wherein the air delivery module comprises a static pressure cavity, a filtering layer, a directional air delivery device, and a pressure equalizing film or a flow diffusion plate; the static pressure cavity is used for mixing the led returned air and fresh air; the filtering layer is used for purifying and filtering the led returned air and fresh air; an air delivery hole is formed in the directional air delivery device and is opposite to the filtering layer, so that the fresh air delivered out of the air delivery hole is rebounded by the top wall of the air delivery device and is uniformly mixed with the returned air; the pressure equalizing film or the flow diffusion plate is used for equalizing the pressure of the led returned air and fresh air. The weak turbulence uniform air mixing and delivery device has the advantage that the postoperation infection risk is decreased, the modularizing construction of new medical facilities is realized, and the returned air and fresh air are uniformly mixed at lower cost. The invention also relates to an assembly type weak turbulence uniform air mixing and delivery device.

A fiber carding and outputting device for an air laid machine comprises a machine frame, a cotton pressing plate supported by a left wallboard and a right wallboard, an air bellow fixed between the left wallboard and the right wallboard, a cotton carding roller supported between the left wallboard and the right wallboard, a cotton supporting plate arranged under the cotton pressing plate correspondingly, and a roller mechanism supported between the left wallboard and the right wallboard and connected with a roller driving mechanism. The device is characterized in that an air outlet channel of the air bellow extends to a cotton outlet of the cotton carding roller and is connected with the front side of a guide plate on the cotton carding roller, and an airflow uniformizing plate is arranged at the position of an air outlet of the air outlet channel of the air bellow; the roller device comprises a large upper roller, a large lower roller, a small upper roller, a small lower roller and a pair of roller shaft adjusting bases, and the roller driving mechanism comprises a driving motor fixing base, a driving motor, a driving motor chain wheel, a large upper roller shaft chain wheel, a large lower roller shaft chain wheel, a small upper roller shaft chain wheel, a small lower roller shaft chain wheel, a transition tensioning chain wheel, a tensioning chain wheel and a driving chain. By the adoption of the device, it is ensured that the thickness of a non-woven cellucotton web layer is uniform, work strength is reduced, and safety is guaranteed.