401 results about "Composite surface" patented technology

The invention relates to an anti-icing-deicing composite surface and a preparation method thereof, and belongs to the field of anti-icing and deicing. The surface comprises a porous material substrate, a super-hydrophobic / hydrophobic lubricating fluid top microstructure and a hydrophobic / hydrophilic lubricating fluid internal microstructure, wherein the super-hydrophobic / hydrophobic lubricating fluid top microstructure and the hydrophobic / hydrophilic lubricating fluid internal microstructure are coupled to the surface of the porous material substrate; lubricating fluid is injected into the surface of the hydrophobic / hydrophilic lubricating fluid internal microstructure; the super-hydrophobic / hydrophobic lubricating fluid top microstructure is located on the surfaces of a plurality of columnar bodies arranged on the porous material substrate in an array mode, namely, the super-hydrophobic / hydrophobic lubricating fluid top microstructure has the super-hydrophobic characteristic to water and lubricating fluid. And the hydrophobic / lubricating fluid-loving internal microstructures are also arranged in the array form, surround the root of each cylindrical object, and have the characteristics of lubricating fluid loving and hydrophobicity. The surface can have anti-icing / ice-dredging properties of super-hydrophobic and super-smooth properties at the same time, that is, the surface can have excellent anti-icing properties of a super-hydrophobic surface, and can also be ice-dredging like a super-smooth surface after the surface is iced, so that ice is easier to remove.

The present invention provides a lithium iron phosphate positive electrode material, a preparation method therefor, and a use thereof. The preparation method comprises: in a calcination and cooling phase for lithium iron phosphate synthesis, introducing hydrogen to react with lithium iron phosphate, so as to generate highly-conductive Fe2P on the surface of the lithium iron phosphate; then mixing the lithium iron phosphate with ammonium fluoride and carrying out secondary calcination to form a fluorine coating; and forming a stable and robust positive electrode-electrolyte layer on the surface of a positive electrode. By means of composite surface modification, the method of the present invention successfully improves the conductivity of the material and inhibits the decomposition of Fe2P in an electrolytic solution, thereby greatly improving the rate performance and the cycle performance of the material.

The invention belongs to the technical field of seawater desalination, and discloses a light-heat-electricity-heat synergistic evaporator and a preparation method thereof.The light-heat-electricity-heat synergistic evaporator comprises a water transmission channel, a light-heat evaporation interface and an electric heating evaporation interface, the light-heat evaporation interface is arranged on the water transmission channel, and the electric heating evaporation interface is arranged in the light-heat evaporation interface; the water transmission channel is made of a two-dimensional layered material, the photo-thermal evaporation interface is made of a two-dimensional layered material composite surface plasmon material, and the electric heating evaporation interface comprises a metal net which is arranged in the photo-thermal evaporation interface and forms an interlayer heating structure. Compared with a traditional photo-thermal evaporator, the photo-thermal-electric-thermal synergistic evaporator adopting an interlayer heating mode can achieve all-weather stable operation through solar energy and electric energy, and the heat loss of electric heating is reduced by regulating and controlling the position of an electric heating evaporation interface. Due to the high conductivity of the metal net, the evaporation efficiency is greatly improved, and the metal net can be efficiently applied to industrial production of water evaporation, seawater desalination and fresh water production.

The invention provides a method for evaluating the roughness of a superposed surface of a precast concrete component based on a two-dimensional image. The method comprises the following steps: carrying out image graying processing on the collected two-dimensional image to obtain a gray image of the superposed surface of the precast concrete component; calculating an image gray level co-occurrence matrix under different image gray level conditions; the contrast ratio and the gray scale entropy of the image gray scale co-occurrence matrix under different image gray scale conditions are calculated, and the weights corresponding to the contrast ratio and the gray scale entropy are calculated; and carrying out weighted summation on the contrast ratio and the gray entropy of the gray image of the superposed surface of the concrete prefabricated component under the maximum gray level, and calculating to obtain a roughness index of the superposed surface of the concrete prefabricated component, so as to evaluate the roughness state of the superposed surface of the concrete prefabricated component according to the roughness index. The method has the advantages of realizing quantitative evaluation of the roughness of the superposed surface of the concrete prefabricated component, being convenient to operate and the like.

The invention relates to an integrated machining method for a niobium-tungsten alloy composite surface variable-wall-thickness thin-wall part, and belongs to the field of metal plate forming. Determining the size of a niobium-tungsten alloy plate according to the size of the composite surface; groove milling is conducted on the spinning clamping position of the niobium-tungsten alloy plate; the machined plate is arranged on a spinning tire, and a tail top is used for clamping and fixing; the variable wall thickness forming of the curved generatrix part is realized by adopting strong shearing spinning and common spinning deep drawing spinning; the equal-wall-thickness forming of the cylindrical part is realized by adopting multi-pass deep drawing and spinning; the tiny allowance of the outer wall is removed through precise turning cutting, and it is guaranteed that the wall thickness meets the product use requirement; polishing the inner and outer surfaces to reduce the surface roughness; the niobium-tungsten alloy plate is used for forming, the material utilization rate is increased, split connection weld joints are reduced through a highly-integrated forming method, and the structural reliability is improved.

The invention belongs to the technical field of enhanced boiling heat exchange, and designs a non-uniform fractal micro-pit structure and super-hydrophilic composite surface, which comprises a micro-pit structure, a micro-pit structure area and a super-hydrophilic channel, the micro-pit structure and the micro-pit structure area can be obtained through a nanosecond laser micromachining technology, a non-uniform fractal micro-pit structure is formed on the surface of the copper base, and the super-hydrophilic channel can be obtained in a chemical oxidation mode. According to the non-uniform fractal micro-pit structure and super-hydrophilic composite surface, the number of vaporization cores can be increased under the low heat flux, the directional bubble convergence process can be achieved under the medium heat flux, liquid backflow can be enhanced under the high heat flux, bubble film forming can be delayed, and the critical heat flux can be increased; therefore, the enhanced boiling heat exchange effect under different heat flux densities is achieved.

A surface layer main body comprises a rapid infiltration layer, a connecting layer, a guiding and absorbing layer and a liquid sealing layer which are sequentially arranged from top to bottom, and fibers of the rapid infiltration layer are interwoven and arranged to form a plurality of tiny channels and pore networks, so that rapid penetration and transmission of liquid are facilitated; the connecting layer is formed by melting and bonding the first fiber layer and the second fiber layer during hot pressing and plays a role in connecting and bonding the absorption guiding layer and the rapid permeation layer, the absorption guiding layer is of a double-layer fiber web structure, liquid permeates into an upper-layer fiber web and is guided in the length direction of the upper-layer fiber web through the flow guiding grooves, and the rapid permeation layer is formed by the rapid permeation layer. The liquid seal layer is made of fine denier fibers, the fine denier fibers are small in pore size and permeate towards the direction of the lower layer fiber web, under the same thickness and volume, pores of the lower layer fiber web are few, liquid can rapidly penetrate through the lower layer fiber web, and the permeation speed of the liquid is increased, the liquid seal layer is composed of fine denier fibers, the fiber pores are small, and under the action of the pore effect and gravity, the liquid seal layer can permeate towards the lower layer fiber web. And the liquid is not easy to reversely seep towards the rapid seeping layer along the liquid sealing layer.

The invention discloses a laser-chemical composite surface planarization process based on a laser stripping sheet. The method comprises the following steps: firstly, carrying out surface scanning on the surface of a wafer subjected to laser-ultrasonic stripping by adopting femtosecond laser, thinning the wafer to a first target thickness through an ultra-short pulse cold working mechanism, and optimizing the sharp corner fluctuation of the surface at the same time; then immersing the wafer into a hydrofluoric acid-nitric acid mixed solution containing a platinum / iridium catalyst, accurately etching the residual sharp corner by utilizing a selective catalytic reaction of a contact point of a catalyst plate and the wafer, and feeding back and adjusting processing parameters in real time through a morphology monitoring module and an infrared thermal imaging system; and finally, thinning to the required thickness by adopting chemical mechanical polishing, and obtaining an atomic-scale flat surface. According to the technology, through the synergistic effect of laser pre-thinning and chemical etching, the problems that a traditional grinding technology is low in efficiency and large in material consumption are solved, and the technology has the advantages of being efficient, low in damage, high in precision and the like and is suitable for surface treatment of hard semiconductor wafers such as silicon carbide and gallium nitride.

The invention relates to the technical field of water treatment filter materials, in particular to an intelligent clean gradient composite water purification filter element and a preparation method thereof. The filter element adopts an integrated design of'natural gradient base material + ZIF-67 function enhancement + fluorescence-ultrasonic intelligent regeneration ': modified vegetable sponge is used as a porous support layer, a silica gel / ZIF-67 composite gradient layer is constructed on the porous support layer to realize adsorption and antibacterial dual functions, and dopamine-aluminum ions are used for composite surface modification to enhance hydrophilicity and interlayer binding force; a matched automatic system senses pollution in real time through the fluorescence monitoring module and triggers the ultrasonic regeneration module to complete self-cleaning, and the flux recovery rate is larger than or equal to 97.5%; the interception rate of the filtering element to anabaena under the operation pressure of 0.1-0.3 MPa is larger than or equal to 99.2%, the filtering flux is increased by 6-8 times compared with that of a commercial element, the filtering element can tolerate complex water quality in the coexistence of drugs and personal care products, natural vegetable sponge serves as a base material, and the filtering element has the advantages of biocompatibility and low cost and is suitable for drinking water purification and eutrophication water body treatment.

The invention discloses an ion separation solar evaporator and a preparation method thereof, and belongs to the technical field of magnesium-lithium separation. The ion separation solar evaporator comprises a transmission channel made of a two-dimensional layered material, an ion separation nanofiltration membrane, a capillary layer made of hydrogel and a water evaporation area made of a two-dimensional layered material composite surface plasmon material which are sequentially stacked, and a salt crystallization region made of a two-dimensional layered material composite rheology modifier is arranged around the water evaporation region. According to the invention, efficient selective separation of magnesium and lithium in salt lake brine / seawater is realized through a solar-driven nanofiltration membrane separation technology, the bottleneck of high energy consumption of a traditional lithium extraction process based on a nanofiltration membrane is broken through, and the salt lake brine does not need to be pretreated. In addition, lithium-containing salt can be directly collected, the subsequent treatment process is greatly simplified, and an environment-friendly, economical and efficient solution is provided for development of salt lake lithium resources.

The invention provides a grinding, spraying and rolling composite surface machining method for a gear tooth surface, which comprises the following steps of: determining the overall maximum elastic deformation of a gear to obtain a modified theoretical involute gear tooth profile; by means of the micro-line-segment theory, a micro-line-segment type involute gear tooth profile is obtained; by means of non-linear smooth fitting, a final modified involute gear tooth profile is obtained, and an initial gear is obtained through machining; on the basis of the initial gear, a gear shot blasting impact model is built, and a shot blasting gear is obtained; and on the basis of the shot blasting gear, a gear finishing and grinding model under gear tumbling finishing machining is built, and a finished gear is obtained. Grinding, shot blasting and barreling finishing are combined, through process coupling design, the overall performance of the gear is improved, higher manufacturing precision is achieved, the failure risk is reduced, the service life of the gear is prolonged, and the gear has the practical application value.

The invention relates to the technical field of stainless steel composite plates, in particular to a stainless steel composite plate for a thick bridge and a preparation method of the stainless steel composite plate for the thick bridge, and the method comprises the following steps: carrying out single assembly treatment to obtain a composite blank, carrying out primary heating and rolling on the composite blank, carrying out secondary heating, controlled rolling and controlled cooling treatment to obtain the composite plate, tempering and straightening; wherein the single-time assembly treatment specifically comprises the steps that beveling and drilling are conducted on the four edges of the to-be-compounded side of the base material to form air exhaust holes, the to-be-compounded face of the clad stainless steel is attached to the base material, then welding sealing is conducted, and vacuumizing treatment is conducted. The problems that the stainless steel composite plate for the high-performance thick-specification bridge is difficult to produce through symmetric assembly rolling and rolling is difficult to achieve through a conventional single assembly are solved, the produced stainless steel composite plate for the bridge is excellent in interface bonding, the shear strength is larger than or equal to 380 MPa, the yield ratio is smaller than or equal to 0.83, the impact Akv of a base material at the temperature of-40 DEG C is larger than or equal to 250 J, and the intergranular corrosion resistance of a covering material is excellent; and the steel plate has good comprehensive performance and plate shape.

An infrared detection camera for the inspection of coated substrates. A corrosion sensing instrument is handheld, portable, battery powered, compact and lightweight. The camera performs nondestructive, real time imaging of corrosion and defects beneath painted metal or plastics or composite surfaces. The device includes a user-friendly computer interface for real time imaging and image storage capability and is typically used for detecting early stage corrosion beneath painted aircraft aluminum surfaces. The handheld device has a front “open air” imaging port which is designed to be placed in soft contact against the painted surface to be inspected by the instrument. The device includes an infrared camera and infrared lighting to capture an image of the surface. The captured image is transferred to a computer and analyzed to locate imperfections below a coating on a surface.

The invention discloses a method for solving linting and dusting during paperboard printing, and belongs to the technical field of papermaking. Comprising the following detailed steps: a slurry preparation process, surface sizing treatment and a drying and curing process, in the slurry preparation process, various high-quality fiber raw materials are carefully selected and mixed, the proportion of various fibers is accurately controlled according to the expected performance and quality requirements of the paperboard, and meanwhile, a proper amount of auxiliaries are added; and the binding force between the fibers and the strength of the paper are enhanced. The raw material ratio in the paperboard production process is precisely regulated and controlled, the specially-made composite surface sizing agent is adopted for surface treatment, and scientific and reasonable drying and curing processes are matched, so that the problems of linting and powdering of the paperboard in the printing process are effectively solved, and the printing quality and the production efficiency of the paperboard are improved.

The invention discloses a degenerated surface processing method and device of a CAD model, equipment and a medium, and relates to the technical field of computer aided design, and the method comprises the steps: importing and repairing an initial CAD model, building a watertight grid data structure, and obtaining a composite curved surface comprising a continuous curved surface and a discrete curved surface; carrying out degraded surface identification on the composite curved surface to obtain a corresponding degraded surface identification result; if the degenerated surface in the composite curved surface is a complete degenerated surface, deleting the complete degenerated surface, fusing adjacent edges of a target surface patch adjacent to the complete degenerated surface, and performing boundary topology reconstruction and discrete grid data stitching after reconstruction by using the fused curved surface information to obtain a degenerated surface processing result; and if the degeneration surface in the composite curved surface is a partial degeneration surface, cutting the area where the partial degeneration surface is located, converting the cut area into a complete degeneration surface, and executing the step of deleting the complete degeneration surface. Under the condition that original geometric data are not modified, a degenerated surface is automatically identified and processed.

The invention relates to the technical field of titanium composite material processing, in particular to a narrow titanium-aluminum solid-liquid composite material and a preparation method and application thereof. The narrow titanium-aluminum solid-liquid composite material comprises a titanium strip and an aluminum strip formed by casting and rolling molten aluminum, wherein the titanium strip is made of pure titanium or titanium alloy; the aluminum strip is one of 1-series pure aluminum, 3-series aluminum alloy, 5-series aluminum alloy and 6-series aluminum alloy; the peel strength between the titanium strip and the aluminum strip is larger than or equal to 60 N / mm < 2 >, and the tensile strength of the narrow-width titanium-aluminum solid-liquid composite material is larger than or equal to 300 MPa, the yield strength is larger than or equal to 200 MPa, the composite surface shear strength is larger than or equal to 180 MPa, and the ductility is larger than or equal to 20%. The titanium-aluminum solid-liquid composite material prepared in the invention has good mechanical strength and bonding strength.

The invention discloses a high-alloy steel nitriding-laser quenching composite surface strengthening method which comprises the following steps: sequentially polishing the surface of high-alloy steel by using 240-mesh waterproof abrasive paper and 2000-mesh waterproof abrasive paper, then sequentially putting the high-alloy steel into ethanol and acetone for ultrasonic cleaning, and nitriding the pretreated high-alloy steel to form a nitriding layer; and cooling to room temperature along with the furnace under the atmosphere of nitrogen or ammonia gas to obtain the high alloy steel containing the nitriding layer. And blackening treatment is conducted in the atmosphere of argon or nitrogen, then laser quenching treatment is conducted, and high alloy steel surface strengthening treatment is completed. According to the nitriding-laser quenching composite surface strengthening process, the problems that a high alloy steel nitriding layer is shallow (smaller than 0.2 mm), interface brittleness is achieved, and the retained austenite content is high (larger than 20%) are effectively solved, the total treatment time is shorter than or equal to 16 h, the surface hardness of a modified layer is larger than or equal to 600 HV0.1, the thickness of the modified layer is larger than or equal to 1.5 mm, and the nitriding-laser quenching composite surface strengthening process is suitable for preparing key components such as aviation gears and heavy-duty bearings.

The invention discloses a Ti-Nb-Zr / MAX phase / Cr-C-N multi-layer composite coating bipolar plate and a preparation method thereof. The multi-layer composite coating sequentially comprises a Ti-Nb-Zr alloy transition layer, an MAX phase middle layer and a Cr-C-N nano composite surface layer from inside to outside. According to the Ti-Nb-Zr / MAX phase / Cr-C-N multi-layer composite coating bipolar plate and the preparation method thereof, through the synergistic effect of the Ti-Nb-Zr alloy transition layer, the MAX phase middle layer and the Cr-C-N nano composite surface layer, the comprehensive optimization of the coating performance is realized: the Ti-Nb-Zr alloy transition layer provides excellent matrix adhesive force and stress buffer effect; the MAX-phase intermediate layer provides a main corrosion-resistant barrier and self-repairing capability; the Cr-C-N nano composite surface layer provides low contact resistance and good surface stability; and meanwhile, the interlayer stress is effectively reduced by utilizing the gradient transition region, the bonding strength and long-term stability of the coating are improved, and the comprehensive performance of the multi-layer composite coating bipolar plate is effectively improved.

The invention discloses a La-WO3-CN nano composite material and a preparation method and application thereof, and belongs to the technical field of semiconductor photocatalysts.By introducing rare earth element lanthanum, the surface hydrophilicity of the La-WO3-CN nano composite material is improved, the carrier separation and migration efficiency is improved, and the photoelectric conversion efficiency is optimized; according to the La-WO3-CN nano composite material disclosed by the invention, the modified graphite phase carbon nitride is doped with the tungsten trioxide, so that the internal impedance of CN-WO3 and the migration resistance of current carriers are reduced, the forbidden bandwidth is reduced, the visible light absorption range of the La-WO3-CN nano composite material is widened, and the light absorption capability is improved, so that more electron and hole pairs are generated, and the activity of the La-WO3-CN nano composite material is greatly improved.

A method of fabricating a semiconductor device includes providing a GaN substrate with an epitaxial layer formed thereover, the epitaxial layer forming a heterojunction with the GaN substrate, the heterojunction supporting a 2-dimensional electron gas (2DEG) channel in the GaN substrate. A composite surface passivation layer is formed over a top surface of the epitaxial layer, wherein the composite surface passivation layer comprises a first passivation layer portion formed proximate to a first region of the GaN device and a second passivation layer portion formed proximate to a second region of the GaN device. The first and second passivation layer portions are disposed laterally adjacent to each other over the epitaxial layer, wherein the first passivation layer portion is formed in a first process and the second passivation layer portion is formed in a second process.

The invention discloses a method for machining a hard and brittle material composite surface based on ultrasonic vibration assisted slow cutter servo. The method comprises the following steps that a prediction model is established, and the critical cutting depth is obtained; designing and inputting a processing track; installing a debugging auxiliary system and fixing the workpiece; rough surface machining; primary finish machining is conducted on the surface of the workpiece, an ultrasonic vibration auxiliary system is started, a slow tool servo control tool is assisted through ultrasonic vibration, and primary finish machining is conducted according to the designed machining track; second-time finish machining is conducted on the surface of the workpiece, an ultrasonic vibration auxiliary system is started, a slow tool servo control tool is assisted through ultrasonic vibration, and second-time finish machining is conducted under the condition that the cutting depth is lower than the critical cutting depth of the workpiece material; machining is completed, and the workpiece surface is cleaned; a processing machine tool used in processing is a five-axis ultra-precision machine tool. Pits and micro-cracks formed on the machined surface can be effectively inhibited, then tool abrasion is reduced, machining efficiency is improved, machining cost is reduced, and completeness of the composite surface can be improved.

The invention relates to the technical field of casting, and discloses a gas turbine blade casting method which comprises the following steps: preparing a composite surface coating containing zircon powder, silicon carbide particles, alumina micro powder, a silicon-aluminum composite sol binder and a xanthan gum stabilizer; a double-layer gradient coating structure with the inner layer rich in silicon carbide and the outer layer rich in aluminum oxide is formed on the surface of the wax mold through a step-by-step coating technology; and a gas turbine blade casting is obtained through shell preparation, sintering and high-temperature alloy pouring. Through the synergistic effect of a double-phase ceramic particle system, the gradient sintering characteristic of the silicon-aluminum composite sol and the suspension stabilization effect of xanthan gum, the problems that in a traditional coating system, surface layer sintering is uneven, particles are layered and settled, and a sol system is unstable are solved, the surface roughness Ra of a casting is smaller than or equal to 2.5 micrometers, the size precision is improved by 30% or above, and the casting quality is improved. The service life of the coating is prolonged to more than 7 days.

The invention discloses a production method of a large-thickness nickel-based alloy anti-acid pipeline composite board. The production method comprises the following steps: preparing a blank, cogging a continuous casting blank, controlling the thickness of the blank after cogging, and controlling the unevenness of an anti-acid pipeline steel substrate X65MS-F and a special alloy N08825; after the external dimensions of the base plate and the covering plate blank are inspected to be qualified, assembling is conducted, and the two covering plates are coated with an isolating agent and dried; polishing a composite surface; aligning and compounding the baked carbon steel billet and stainless steel billet, and then welding; rolling production is conducted after welding is completed, after rolling is completed, the composite plate enters ultrafast cooling, and the rolled steel plate is driven to a pre-straightening machine to be subjected to 2-4-pass reciprocating pre-straightening. The method has the advantages that the total rolling thickness is increased to 80 mm, effective combination of a composite plate base coating is guaranteed, and products meeting performance requirements are stably produced.

The present invention discloses a casting mold with rapid and uniform cooling and a manufacturing method thereof. The casting mold cavity is composed of a mold block and a powder metallurgy composite surface layer. The mold block is a porous metal block formed by sintering metal wires, which is machined to obtain a shape that matches the upper mold and the lower mold, and its entire surface is covered with a metal powder composite surface layer; the upper mold and the lower mold are respectively equipped with a cooling fluid inlet pipe and a cooling fluid outlet pipe; the cooling fluid inlet pipe is connected to the cooling fluid inlet, communicates with the mold block, and forms a cooling fluid channel with the cooling fluid outlet pipe. This manufacturing method includes pressing and sintering of a metal block, preparation of a powder metallurgy composite surface layer, and rolling extrusion. The present invention has a simple structure, a convenient manufacturing method, is easy to implement, and has a low production cost; it significantly improves the heat exchange efficiency between the fluid and the mold, realizes rapid solidification of the forming material, and improves production efficiency; and has good market application prospects.

The present invention relates to the technical field of inner circle polishing, and discloses an inner circle polishing device for stainless steel products. The device solves the problem that the existing inner circle polishing device for stainless steel products has poor polishing effect and is inconvenient to complete the polishing operation at one time when facing products with complex inner wall shapes. The device pushes the friction wheel assembly to fit the inner surface of the product through a support assembly. A measuring assembly for detecting the inclination of the inner surface of the product along the forward direction is provided on one side of the support assembly (34). After the inclination of the inner surface of the product is measured by the measuring assembly, the telescopic member is controlled to make the assembly frame tilt accordingly at the corresponding position, so as to promote the friction wheel assembly to fit the inner surface of the product, thereby enabling the friction wheel assembly to automatically perform efficient and high-quality grinding and polishing on the composite surface of the product during movement.

The utility model provides a novel plastic sealing bag, which relates to the technical field of sealing bags and comprises a bag body, two corners of the surface of the bag body are provided with positioning parts, one side of the bag body far away from the positioning parts is fixedly provided with a reinforcing part, the reinforcing part is detachably connected with the positioning parts, and two corners of the surface of the positioning parts and two corners of the surface of the reinforcing part are respectively provided with a son buckle and a mother buckle. And the son buckle and the mother buckle are clamped by folding the bag body or are attracted by a magnet. The positioning part is trilateral or quadrilateral, two sides of the positioning part are connected with the bag body, an accommodating groove is formed between the positioning part and the bag body, the reinforcing part is detachably connected with the accommodating groove, the positioning part and the reinforcing part are respectively formed by compounding three layers of PE materials, the composite surface is concave-convex, and a containing structure is designed at the corner position of the sealing bag. And the sealing bag is not easy to scatter after being folded.

This invention discloses a method for designing the surface morphology of composite fiber reinforced polymer (FRP) bars with high bonding performance, and the FRP bars themselves. The method includes: S1, establishing a parametric model to simulate the behavior of the fiber reinforced polymer (FRP)-concrete interface based on the application environment requirements, including high-voltage electromagnetic environments and / or humid heat and corrosion environments; S2, constructing a composite surface morphology scheme with multiple rib structures of different functional orientations embedded in the FRP bar body based on the parametric model; S3, quantitatively analyzing the microscopic characteristics of the composite surface morphology scheme, and iteratively optimizing it with the objective functions of maximizing bond strength and minimizing crack width, considering temperature gradient and load coupling effects, to obtain the optimized geometric parameters of the composite surface morphology. This invention enables precise quantitative design of the surface geometric parameters of FRP bars and constructs a composite surface morphology scheme with multiple rib structures of different functional orientations embedded in the FRP bar body.

The invention discloses a balanced drainage composite surface layer material for hygienic products and a preparation method thereof, and belongs to the field of hygienic product surface layer materials, the balanced drainage composite surface layer material is used as a composite surface layer of the hygienic products such as nursing pads and mattresses for direct contact with skin, and the balanced drainage composite surface layer material has fine hand feeling similar to the skin, burr-free skin-friendly characteristics and micro-elastic flexibility; meanwhile, by means of the liquid guide design and the fluffy structure of the non-superfine fiber layer, efficient liquid conduction is achieved, and the use comfort and adaptability of the hygienic product are effectively improved. The composite surface layer comprises a superfine fiber layer and a non-superfine fiber layer which are laminated, the superfine fiber layer is a skin contact layer formed by blowing a thermoplastic elastomer in a molten state to the surface of the non-superfine fiber layer, and the non-superfine fiber layer is a liquid conduction and support layer formed by spunlace non-woven fabric. The preparation method of the composite surface layer comprises a preparation step of the spunlace non-woven fabric and a step of laminating the superfine fiber layer and the spunlace non-woven fabric through liquid melting and blowing.

The present invention relates to an anti-proton oxygen / antistatic organosilane / reduced graphene oxide composite surface modified film and a preparation method thereof. The anti-proton oxygen / antistatic organosilane / reduced graphene oxide composite surface modified film comprises: a polymer matrix, and a mixed layer of organosilane and reduced graphene oxide formed on the surface of the polymer matrix; wherein the organosilane simultaneously undergoes bonding reaction with the polymer matrix and the reduced graphene oxide.

An articulating composite surface covering mat and process of forming the mat are provided. The mat has multiple units having a regular, natural or irregular appearance, and each unit a flexible geogrid extending therethrough. A method of forming the mat includes forming the mat upside-down on a bottom surface of a bottom mold, placing the top mold over the bottom mold to form the mold assembly, locating a geogrid in the mold assembly, latching the mold assembly together with magnets, and adding the filler to the mold assembly.