13 results about "Permeable channel" patented technology

A method for forming an absorbent core with a channel formed therein includes the steps of positioning a source of fiberized pulp adjacent a permeable surface, applying a vacuum to the permeable surface to draw the fiberized pulp onto the permeable surface to form an absorbent core, positioning the absorbent core adjacent a channel forming surface including a permeable channel forming portion shaped in a predetermined shape of a channel to be formed in the absorbent core, and applying a vacuum source to withdraw fiberized pulp from the absorbent core through the permeable channel forming portion.

The utility model discloses a kind of foundation pit soil layering permeation and seepage visualization indoor model test box, belong to geotechnical engineering test equipment technical field, comprising: test box main body, multiple layering partition plates are provided in test box main body;Test box main body has at least one transparent front wall;Multiple permeation channels are provided on each layering partition plate, and the channel mouth of permeation channel is provided with electric opening and closing valve;Fluorescent tracer injection system cooperates with the fluorescent tracer injection hole of being set on the side plate of test box main body;Ultraviolet developing module is set with the front wall of test box main body with inclination angle;High-speed camera recording system is set corresponding with the front wall of test box main body;Multi-channel independent water pressure control unit is located at the side of test box main body away from fluorescent tracer injection system;Data acquisition and analysis module is electrically connected with high-speed camera recording system.The utility model can directly reveal piping, seepage erosion and other seepage failure mechanism, provide scientific basis for seepage prevention design optimization.

The present application relates to the technical field of cement clinker preparation, and discloses a method for preparing low-carbon cement clinker by carbon dioxide mineralization curing, comprising: online identification of real-time acoustic characteristics of cement raw materials to determine an optimal resonance frequency, and application of acoustic waves based on the frequency to construct a network of instantaneous micro-penetration channels, and then, after verifying the effectiveness of the channel network by a leading inert gas, injecting carbon dioxide for mineralization in a pulse mode at an appropriate time; the present application organizes the micro-reaction environment dynamically and orderly, converts the transport of carbon dioxide from a passive diffusion process limited by the pore structure of the material into an active guiding process that can be self-corrected in real time, thereby avoiding the blockage and failure of the reaction channels, and improving the depth and uniformity of the mineralization reaction.

The application discloses a method for preparing a metal layer on a chip, and belongs to the technical field of chip manufacturing. In the preparation method, firstly, a trapezoidal structure with an upper positive and a lower negative is formed by crossing positive and negative photoresists, a continuous permeation channel is constructed in the vertical direction, the photoresist stripping solution can quickly permeate to the contact surface of the metal and the photoresist, the Lift-off process time is significantly shortened, and the residual problem caused by the metal bridging is effectively avoided; secondly, a separation layer is deposited on the surface of the positive photoresist, mutual dissolution of the positive photoresist and the negative photoresist in the developing, etching and metal deposition processes can be effectively prevented, the integrity of the double-layer photoresist structure is ensured, and even under the high-temperature or plasma etching working condition, the interface delamination phenomenon does not occur.

The invention relates to the technical field of conductive ITO glass, in particular to large-size ultrathin conductive ITO glass based on a sol-gel method and a preparation method of the large-size ultrathin conductive ITO glass. An ITO film prepared by a traditional sol-gel method is poor in aging resistance and water vapor barrier property. Aiming at the technical problem, the invention provides the large-size ultrathin conductive ITO glass based on the sol-gel method, and the thickness of the large-size ultrathin conductive ITO glass is less than or equal to 1.7 mm. According to the invention, an interface enhancement layer constructed in situ is introduced, so that the bonding strength of an ITO film and a substrate is far higher than that of traditional physical adsorption, and the mechanical reliability and durability of a perovskite solar cell are remarkably improved. The gradient structure of the sol-gel ITO layer greatly reduces permeation channels formed by pores and cracks in a traditional process, meanwhile, the Al-doped SiO2 coating forms a compact amorphous network through a sol-gel method, gaps of a silicon-oxygen network can be filled by doping Al < 3 + >, permeation of water molecules and oxygen is effectively blocked, and the anti-corrosion performance of the coating is improved. And the water vapor transmission rate of the whole device is obviously reduced.

This invention provides a spiral-type membrane element that improves the durability of the bonding joint between the membrane leaf and the central tube, while also facilitating the separation and recovery of the central tube during recycling. [Solution] A spiral membrane element E comprising a plurality of membrane leaves L having permeable channels between opposing separation membranes, and a perforated central tube 5 around which the membrane leaves L are wound with supply channels interposed between the membrane leaves L, wherein both ends of the inner circumference side of the membrane leaves L in the axial direction A1 are bonded to the central tube 5, and in at least a portion of the area of ​​the bonded channel 13, the outer circumference surface of the central tube 5 has a tapered portion 5b that widens toward the center in the axial direction A1.

The invention discloses a glass substrate edge chamfer processing method, which comprises the following steps: S1 and S2, respectively focusing laser beams in a to-be-processed glass substrate by using a laser dynamic focusing device, and controlling the to-be-processed glass substrate to scan along different planned tracks to respectively form a first internal modified layer and a second internal modified layer; wherein the first internal modified layer corresponds to the edge chamfer shape of the glass substrate, and a permeation channel penetrating through the two axial side faces of the glass substrate is formed in a part of section of the second internal modified layer; s3, placing the glass substrate in a chemical etching solution, enabling the chemical etching solution to enter the interior of the glass substrate through the permeation channel, and etching the second internal modified layer, the glass substrate between the first internal modified layer and the second internal modified layer and the first internal modified layer; after etching, the waste material area is separated and falls off from the glass substrate along the second internal modified layer, and an edge chamfer is formed on the glass substrate.

The application provides a kind of determination method of liquid permeability of water-absorbing pad layer in childbirth package, the method comprises: obtaining water-absorbing pad layer sample, water-absorbing pad layer sample is loaded into determination component, and the liquid receiving area and the thickness direction permeation channel are limited, and the upstream pressure baseline, downstream flow baseline and surface layer liquid baseline are collected using intelligent sensor group, and effective determination state set is generated;Under the first pressure difference condition, pre-trigger liquid is introduced into the liquid receiving area in succession according to pre-trigger liquid control set, pulse liquid introduction original record is collected, and initial permeation response sequence is constructed;Channel contraction degree is calculated to generate channel contraction evolution record, and self-locking critical dose state set is determined when channel contraction degree reaches preset contraction threshold;Without changing the liquid receiving area and the thickness direction permeation channel, the water-absorbing pad layer sample is kept in the state corresponding to the self-locking critical dose, and the main test liquid is introduced into the liquid receiving area.

The utility model discloses a photovoltaic module, photovoltaic module includes photovoltaic body, including the first surface and second surface who distributes in the thickness direction opposite, and be located between a plurality of side surface of first surface and second surface, a plurality of side surface form a plurality of corner portion in turn intersect, a plurality of water blocking layer, the plurality of side surface are covered in proper order, and the water blocking layer of adjacent arrangement forms the joint in the corner portion, a plurality of waterproof article, respectively set up in a plurality of corner portion of photovoltaic body, and cover the joint. According to the photovoltaic module of the utility model, set up a plurality of waterproof article, and the water vapor permeation channel at the joint is blocked, and the water vapor permeation performance of photovoltaic module is improved. In addition, simple structure, and the production cost is lower.

The invention provides a method and a device for realizing patterning, a to-be-processed product comprises a pattern area and a non-pattern area, and the pattern area and the non-pattern area both comprise a patterned layer and a mask protection layer formed on the surface of the patterned layer. The patterning step comprises the following steps of: destroying the mask protection layer in the non-pattern area through a friction mechanism or a bombardment mechanism, and forming a plurality of permeation channels on the mask protection layer in the non-pattern area; corroding the patterned layer by the corrosive liquid through the permeation channel so as to remove the patterned layer in the non-patterned region; and cleaning the to-be-processed product, removing the residual mask protection layer in the non-graphic area, and reserving the graphic layer and the mask protection layer in the graphic area to realize patterning. The method has the advantages that the process window is large, the process stability is high, the area outside the mask protection layer of the non-pattern area is not easy to damage in the process of damaging the mask protection layer of the non-pattern area, and the cost is low.

A spiral wound membrane module comprising: a perforated core having an axially extending internal bore; at least one membrane pack comprising a folded membrane sheet defining a first outer face, a first inner face, a second outer face and a second inner face, the fold of the folded membrane sheet being the leading end of the membrane pack; a feed sheet positioned between the first and second inner faces so as to be sandwiched between the folded membrane sheet; a first permeate screen adjacent the first outer face of the membrane sheet so as to define a first permeate channel; a second permeate screen adjacent the second outer face of the membrane sheet so as to define a second permeate channel; and a fluid impermeable support coupled to the leading edge of the membrane pack. Also disclosed is a method of manufacturing a spiral wound membrane module.