7results about How to "Guaranteed wettability" patented technology

The utility model discloses a medicine moistening device for traditional Chinese medicine decoction piece processing, and relates to the technical field of traditional Chinese medicine decoction piece processing, in particular to a supporting frame, a spraying liquid collecting box and two impurity collecting boxes, and an inner cavity of the supporting frame is sequentially provided with an upper conveying structure, a middle conveying structure and a lower conveying structure from top to bottom. Each of the upper conveying structure, the middle conveying structure and the lower conveying structure comprises a conveying mesh belt, a deslagging structure is arranged on the inner side of each conveying mesh belt, a spraying plate is arranged above the upper conveying structure, a liquid inlet pipe and a return pipe are fixed on one side of an inner cavity of the spraying plate, and a spraying liquid collecting box is arranged below the lower conveying structure. According to the medicine infiltrating device for traditional Chinese medicine decoction piece processing, through the arrangement of the upper conveying structure, the middle conveying structure and the lower conveying structure, continuous work can be achieved, the infiltrating efficiency of traditional Chinese medicinal materials is improved, the traditional Chinese medicinal materials can be infiltrated for multiple times, the infiltrating effect is guaranteed, and processing of the traditional Chinese medicine decoction pieces is facilitated.

The invention belongs to the technical field of composite materials, and particularly relates to high-temperature-resistant conductive connection brazing filler metal and a preparation method and application thereof. The high-temperature-resistant conductive connection brazing filler metal comprises the following raw materials in percentage by mass: 60%-70% of silver powder, 5%-13% of titanium powder, 10%-20% of copper powder and 5%-17% of a precursor solution. According to the method, the Ag-Cu-Ti solder and the silicon-based precursor are mixed, the fluidity and wettability of the solder can be guaranteed at the same time, and metal-ceramic-based composite material connection under the non-pressure condition is achieved. By using the metal and ceramic mixed brazing filler metal, the thermal matching property of the metal and the ceramic matrix composite material can be improved, the obtained connection effect is remarkable, and meanwhile the high-temperature-resistant characteristic, the high-temperature connection characteristic and the high-temperature conductive characteristic are guaranteed.

The application belongs to the field of membrane electrode, and particularly relates to a preparation method of a gas diffusion layer suitable for air-cooled membrane electrode. The gas diffusion layer is composed of a substrate layer, a microporous layer and a filler layer, and a detailed preparation method is provided based on carbon material, hydrophobic agent and solvent as basic raw materials. The application solves the defect of high condition sensitivity of the existing air-cooled membrane electrode, reduces porosity by utilizing the porous characteristics of the microporous layer and the filler layer, prolongs the diffusion length of the gas, so as to achieve the effect of water retention and ensure the wetting property of the proton exchange membrane.

The invention relates to the field of adhesives, in particular to the field of C09J155 / 00, and particularly relates to a hot-melt pressure-sensitive adhesive suitable for a medical adhesive tape and a preparation method of the hot-melt pressure-sensitive adhesive. The hot-melt pressure-sensitive adhesive suitable for the medical adhesive tape is prepared from the following raw materials in parts by mass: 30-40 parts of a main polymer, 30-50 parts of tackifying resin, 5-10 parts of a tackifier, 10-30 parts of rubber oil and 0.1-3 parts of a functional aid, wherein the main polymer comprises linear SIS and star SIS; the hot-melt pressure-sensitive adhesive provided by the invention is excellent in initial adhesion and persistent adhesion performance, is peelable, and is especially suitable for being applied to medical adhesive tapes, and the raw materials of all the components are nontoxic and harmless.

The present application relates to the technical field of cooling fans, and specifically to a flip device and a cooling fan. When the wet curtain is taken out, the driving unit drives the flip part to rotate clockwise, driving the gear bar arranged on the flip part to move in the direction of blocking the drain hole, thereby closing the drain hole, avoiding the noise caused by the falling water flow, and improving the user experience; on the contrary, when the wet curtain is installed, the driving unit drives the flip part to rotate counterclockwise, driving the gear bar arranged on the flip part to move in the direction away from the drain hole, thereby opening the drain hole, ensuring that the water flow out of the drain hole can flow smoothly to the wet curtain, and ensuring the wetting effect of the wet curtain.

This application relates to the field of proton exchange membrane fuel cell technology, and provides a gas diffusion layer, its preparation method, and its application. The gas diffusion layer includes a substrate layer and a microporous layer disposed on one side of the substrate layer. The substrate layer has stacked carbon fibers with voids between them. The microporous layer permeates into the substrate layer, forming overlapping portions, and partially permeates into the voids formed by the carbon fibers in the substrate layer. The microporous layer has a fluorine content of 12wt% to 25wt%, and the water contact angle difference between the microporous layer and the substrate layer is Δ, where Δ satisfies 0°≤Δ≤5°. This gas diffusion layer not only has good water drainage and permeability, but also, through the stacked arrangement of the substrate layer and the microporous layer, which gives the substrate layer and the microporous layer similar water properties, effectively reduces the condensation of water vapor in the permeate gas within the gas diffusion layer, increases the humidity of the permeate gas, and thus effectively maintains the wettability of the proton exchange membrane fuel cell.

The application discloses a gradient-wetting Janus ceramic membrane and a preparation method and application thereof. In the preparation, a porous ceramic substrate with hydrophilic double main surfaces is taken, one main surface of the porous ceramic substrate is treated with a solution containing a hydrophobic modifier (without contacting the other main surface), a photocatalyst is loaded on the treated surface, and at least three continuous sub-regions are divided, different-length activation radiation is applied to each sub-region to form a gradient-wetting region with a water contact angle gradually changing along a preset direction, and finally, the photocatalyst is removed and dried. The obtained membrane has an asymmetric structure, one side has precisely regulated gradient-wetting, and the other side remains hydrophilic. When the membrane is applied to scenes such as carbon capture and regeneration of waste heat recovery of gas, the surface wettability of the membrane can be accurately matched with a local thermodynamic and concentration environment along the way, heat and mass transfer can be strengthened, surface self-cleaning can be realized, the performance of the membrane is superior to that of a traditional membrane, and the energy-saving and consumption-reducing potential is great.