18results about How to "Composite firm" patented technology

The invention discloses a preparation method and application of a nano porous foamed aluminum material, and belongs to the technical field of porous metal materials. The method comprises the following steps: mixing main aluminum powder with SiO2 coated aluminum powder waste; the three-layer core-shell pore-forming agent is of a PMMA inner core / Sn-Bi alloy middle layer / Al2O3 outer layer structure, and the PMMA particle size of the three-layer core-shell pore-forming agent is in gradient distribution (the surface layer is 50-100 nm, the middle layer is 200-300 nm, and the core layer is 400-500 nm); after cold press molding, two-stage stepped sintering is carried out, in the first stage, Sn-Bi alloy is melted at low temperature in N2-H2 atmosphere to wrap aluminum powder, and in the second stage, PMMA is decomposed at high temperature under vacuum, carbon-containing gas and pressure to form pores, and an Al4C3 reinforced phase is generated in situ. High-performance fireproof, catalytic and electromagnetic shielding functional materials can be further prepared through surface compounding of Al4C3 / expanded graphite, in-situ growth of ZnO nanorods / Pt or compounding of carbon nanotubes, and the material can be widely applied to the fields of new energy batteries, environment-friendly catalysis and 5G communication.

The invention discloses a conditioner for improving acid soil and a preparation method thereof, dolomite, bentonite and a sodium alginate solution are mixed according to a certain proportion, acidified dolomite is used as a cross-linking agent to form small balls, and the small balls are washed with deionized water and dried to obtain the soil conditioner. According to the method, the natural dolomite is used as a main raw material for improving the acid soil and is also used as a raw material of a cross-linking agent, so that Ca < 2 + > in the dolomite and sodium alginate form a structure with a three-dimensional cross-linked network and pores through electrostatic interaction; the soil conditioner can improve the acid environment of soil, doubly adjust the pH value of the soil and increase nutrient elements such as Ca and Mg in the soil, and the preparation method is simple, green and safe.

The invention relates to the technical field of aerogel microsphere preparation, in particular to a method for preparing composite nanocellulose aerogel microspheres based on electrostatic field auxiliary regulation and control. Comprising the following steps: forming uniform liquid drops from a silane modified nano cellulose suspension through an electrostatic spraying device provided with an annular electrode group and a real-time monitoring feedback system; the liquid drops are induced by an electrostatic field in a pre-cooling area to be initially set and then subjected to liquid nitrogen cryogenic treatment, gradient freeze drying is conducted, and aerogel microspheres are obtained; and finally, carrying out surface modification on the aerogel microspheres, and loading nano microspheres under the assistance of an alternating electric field to obtain the composite nano cellulose aerogel microspheres. Through the synergistic effect of the multi-stage electric field, accurate regulation and control on the whole process of microsphere forming, internal structure construction and functional compounding are realized, so that the composite nanocellulose aerogel microspheres with narrow particle size distribution, uniform size and adjustable functions are prepared, and the composite nanocellulose aerogel microspheres have wide application prospects in the fields of adsorption, catalysis, biological medicine and the like.

The present application relates to the technical field of sanitary products, and particularly relates to a biodegradable nursing pad and a preparation process thereof. The nursing pad comprises a skin-friendly top layer, a composite core absorption layer and a gas-impermeable bottom layer from top to bottom. The composite core absorption layer comprises a gel-embedded skeleton composed of an air-laid wood pulp fiber web and a composite antibacterial hydrogel in-situ cross-linked and embedded in the pores of the web, and a fluff pulp fiber layer fixed to at least one surface of the skeleton. The composite antibacterial hydrogel comprises hydrophilic reinforcing fibers modified by a silane coupling agent with a hydrophilic group, a sodium alginate matrix and zinc ions. The nursing pad prepared by the present application has excellent rapid absorption, high antibacterial efficiency and high biodegradability, and solves the problem that traditional products are difficult to have both performance and environmental protection.

The application relates to the technical field of composite materials, and discloses a preparation method of a multilayer composite core body, which comprises the following steps: pretreatment, spraying treatment, core composite material preparation, compounding and curing forming; the surface of a fiber base layer is chemically modified through functional pretreatment, the wettability and reactivity of the fiber surface are improved, the different fiber layers with different functional characteristics can be more closely and stably combined, and therefore the integrity, reliability and durability of the multilayer composite core body structure are enhanced; through spraying treatment, functional particles are uniformly loaded on the surface of the fiber base layer in the form of a stable dispersion liquid; the functional particles have good compatibility and bonding force with the fiber base and the interlayer composite material after being treated and surface-modified in a specific manner, the core body is endowed with specific surface functions, the interface bonding between the fiber and the base is enhanced, and the functionality, uniformity and structural strength of the core body are improved.

The utility model discloses a firm glass fiber reinforced plastic skin which comprises a glass fiber reinforced plastic panel and a steel plate, the glass fiber reinforced plastic panel is arranged on the upper end face of the steel plate, a rectangular wire groove is formed in the position, close to the outer side edge, of the upper end face of the steel plate, and oval groove openings are formed in all the edges of the rectangular wire groove. The glass fiber reinforced plastic panel is reasonable in structural design and convenient to use, the glass fiber reinforced plastic panel and the steel plate can be compounded more firmly, and meanwhile, the phenomenon that an adhesive between the glass fiber reinforced plastic panel and the steel plate overflows in the compounding process can be reduced.

The utility model discloses an outdoor side structure of a fireproof broken bridge heat insulation door and window frame sash sectional material, which comprises an outdoor side sectional material body, a heat insulation film is pasted on the outer surface of the outdoor side sectional material body, the heat insulation film is outwards connected with a heat insulation film cover plate, and obtuse angle hook parts are arranged at two ends of the heat insulation film cover plate in the width direction. The heat insulation film cover plate is compounded with the outdoor side profile body and the heat insulation film in a cold rolling mode through obtuse-angle hook parts at the two ends in the width direction of the heat insulation film cover plate. The utility model can be applied to normal-temperature bridge-cutoff heat-insulating doors and windows and high-temperature bridge-cutoff heat-insulating doors and By the adoption of the structure, the heat insulation film cover plate and the outdoor side section bar body are of a rolling edge locking structure, the heat insulation film cover plate and the outdoor side section bar body are attached in parallel, a structural foundation is provided for mechanical and automatic production, the fit clearance of the edges of the two sides of the section bar is controllable, and the composite precision of the section bar is better guaranteed compared with that of manual operation in the prior art. Door and window finished products can be conveniently processed, manufactured and installed.

This utility model relates to the field of composite fabric production technology, specifically to a composite fabric production device, including a composite equipment frame for composite fabric production. An automatic gluing box is fixedly installed on the top surface of the composite equipment frame near the feeding end. An upper fabric roller is movably installed on the top of the automatic gluing box via a bracket. A composite fabric pressure roller, an automatic curing box, and an automatic clamping and winding mechanism are sequentially arranged on the side of the automatic gluing box near the discharge end. The automatic clamping and winding mechanism includes a first mounting frame and a second mounting frame fixedly installed on both sides of the composite equipment frame. A winding roller is movably installed between the first mounting frame and the second mounting frame via a drive motor. The winding roller includes a lower roller body. Compared with existing TPU composite fabric processing equipment, this device can automatically clamp and wind up one end of the fabric, preventing wrinkles or misalignment under external force, resulting in more stable composite. It can not only realize online TPU composite but also post-lamination composite.

An installation structure of a high-safety soft porcelain heat preservation composite board comprises soft porcelain, a metal auxiliary frame, an adhesive, a heat preservation core material, a connecting corner connector and a rivet. The metal auxiliary frame comprises a first connecting strip and a second connecting strip, the first connecting strip is vertically connected to the second connecting strip, and the front surface of the first connecting strip is connected to the back surface of the soft porcelain through an adhesive; the heat preservation core material is connected to the back face of the first connecting strip through an adhesive, the second connecting strip is attached to the heat preservation core material, and a first mounting hole and a second mounting hole are formed in the second connecting strip. According to the installation structure of the high-safety soft porcelain heat preservation composite board, the problems that in the prior art, installation positions of connecting corner connectors are generally needed to be reserved for the soft porcelain heat preservation composite board, and the number of the connecting corner connectors cannot be increased or decreased at will according to actual requirements are solved; and therefore, the soft porcelain heat preservation composite board is not stable enough to install and is easy to loosen and fall off.

The invention relates to the technical field of concrete, and in particular to a self-compacting concrete using waste slag as a raw material and a preparation method thereof. The self-compacting concrete comprises the following raw materials in parts by weight: 100 parts of silicate cement, 115-145 parts of modified waste slag, 65-85 parts of river sand, 230-260 parts of crushed stone, 2.6-3.7 parts of lanthanum oxide / carbon composite material, 1.2-1.5 parts of mullite fiber, 2.3-4.2 parts of EVA emulsion, 3-6 parts of silica fume, 0.3-0.6 parts of water reducer and 45-53 parts of water. The concrete prepared by the invention has high strength and high toughness, good corrosion resistance, strong construction performance and excellent comprehensive performance when a large amount of waste slag is used as a raw material.

The utility model discloses a steel belt composite deviation rectifying control system which comprises a winding roller support, and a winding and unwinding machine A used for conducting deviation rectifying conveying on a steel belt conveyed on the upper layer is installed at the upper end of the winding roller support. A winding and unwinding machine B for conveying the bottom-layer steel belt to is mounted at the vertical bottom end of the winding and unwinding machine A and is positioned at the lower end of the winding roller bracket; the hydraulic deviation rectifying positions of the winding and unwinding machine A and the winding and unwinding machine B are adjusted by taking the conveying position of the middle-layer conveying steel belt as a reference; the three-layer composite conveying steel belt is always located at the unified conveying position, meanwhile, a certain layer of strip steel can be used as the standard or the layer of strip steel can also be automatically subjected to hydraulic centering control deviation correction, other multiple layers of strip steel operate with the center line of the layer of strip steel as the standard, the center position of the strip steel can also be manually deviated, and different composite states are achieved. Therefore, the controller in the steel belt composite deviation rectification control system is used for automatically controlling deviation rectification, so that the steel belt is stable and efficient in the composite process.

The invention discloses a surface blotting membrane capable of being applied to separation and purification of bovine serum albumin and a preparation method of the surface blotting membrane in the technical field of molecular imprinting. The surface blotting membrane is composed of a surface polymerization blotting layer and a cellulose acetate porous membrane substrate. According to the preparation method, bovine serum albumin is taken as a template molecule, methyl methacrylate and a cellulose acetate fiber porous membrane modified by a silane coupling agent KH570 are reacted to achieve the purpose of imprinting bovine serum albumin, and after a template is eluted, the surface imprinted membrane which can be applied to separation and purification of bovine serum albumin is prepared. The surface imprinted membrane can be used for specific selective separation of bovine serum albumin.

The invention discloses a multifunctional double-layer nanofiber membrane and a preparation method and application thereof, and belongs to the technical field of functional textile. The multifunctional double-layer nanofiber membrane is composed of a radiation temperature adjusting layer 1 and a sunlight reflecting layer 2; the radiation temperature regulation layer 1 is prepared from a solid-solid phase change polyurethane spinning solution A containing solid-solid phase change polyurethane and a spinning solution B containing solid-solid phase change polyurethane and silicon dioxide microspheres at the same time through electrostatic spinning, and the thickness of the radiation temperature regulation layer 1 is 40-80 microns; the sunlight reflecting layer (2) is prepared from a spinning solution C containing polyvinylidene fluoride and a spinning solution D simultaneously containing polyvinylidene fluoride and silicon dioxide nanospheres through electrostatic spinning, and the thickness of the sunlight reflecting layer (2) is 10-40 microns; the radiation temperature adjusting layer 1 and the sunlight reflecting layer 2 are obtained through sequential spinning combination, through double-layer structure design, functional filler type selection and process parameter optimization, high performance, comfort and practicability are considered, and remarkable technical advantages and application value are achieved.

The invention relates to a particle foaming sole forming mold and a sole preparation method thereof.The particle foaming sole forming mold comprises an upper mold body and a lower mold body, the outer wall of the upper mold body is provided with a feeding pipe communicated with an upper mold cavity, and the bottom wall of the lower mold cavity is provided with a groove used for containing a hollowed-out bottom piece; a convex part is arranged on the bottom wall of the lower die cavity, a channel is axially arranged in the convex part in a penetrating manner, and the channel is connected with a vacuumizing device; the method for preparing the sole through the particle foaming sole forming mold comprises the steps that the bottom piece with the hollowed-out bottom is placed in the groove, and the bottom piece is fixed; the supporting sheet is adsorbed and fixed; the vacuumizing device vacuumizes the interior of the mold cavity, sucks popcorn particles and heats and foams water vapor in the mold cavity. The popcorn insole and the bottom piece are integrally formed in the mold, the operation steps are simple, and the production efficiency is high; the bottom piece is hollowed out, the top of the bottom piece is embedded into the popcorn insole, the bottom piece and the popcorn insole are firmly compounded, the sole is not prone to layer separation when encountering water, the service life of the sole is long, and the product quality is good.

The utility model discloses a polytetrafluoroethylene composite material for high-end leisure shoes, which comprises a bamboo charcoal fiber layer (1), a polytetrafluoroethylene film layer (3), a leather layer (5) and a water-based nano coating (6) which are sequentially arranged, and a polyurethane phase change layer (2) is arranged between the bamboo charcoal fiber layer (1) and the polytetrafluoroethylene film layer (3). And a buffer layer (4) with a pore structure is arranged between the polytetrafluoroethylene film layer (3) and the leather layer (5). The high-breathability antibacterial fabric has the advantages of being high in breathability, antibacterial, comfortable and long in service life.

The application provides a moisture-regulating and sweat-guiding composite fabric and a preparation method thereof. The moisture-regulating and sweat-guiding composite fabric comprises, in sequence, an outer fabric layer, a waterproof and breathable layer and a moisture-regulating and sweat-guiding layer, and the layers are bonded through hot melt adhesive. The moisture-regulating and sweat-guiding layer is obtained by blending moisture-guiding fibers and moisture-storing and buffering polyester fibers. The moisture-guiding fibers are obtained by melt spinning after blending of first polyester chips and sodium-based montmorillonite. The moisture-storing and buffering polyester fibers are obtained by melt spinning after blending of second polyester chips and divalent metal ion-exchanged zeolite. The application can make the skin-friendly side of the composite fabric have liquid sweat absorption and accommodation capacity, moisture-guiding and diffusion capacity and drying performance.

The invention discloses environment-friendly SiO2 gas gel paste and a preparation method thereof, and belongs to the technical field of porous materials. The problems that in the prior art, a SiO2 aerogel material is tedious in preparation and harsh in drying condition, powder is broken and falls off in the application process, and replacement is difficult are solved. The fiber is used as a reinforcing phase and is compounded with the SiO2 gas gel through polymerization aging, replacement, hydrophobic modification and other reactions, the mechanical property of the SiO2 gas gel is improved on the basis that the SiO2 gas gel has hydrophobicity, dust is not generated in the application process, the SiO2 gas gel is not prone to being smashed and easy to replace, in addition, the SiO2 gas gel paste is simple in preparation process, strict drying conditions are not needed, and the preparation process is simple. The preparation method of the SiO2 gas gel paste provided by the invention comprises the following steps: (1) preparing SiO2 wet gel; (2) polymerizing and aging; (3) solvent replacement; (4) surface modification; and (5) filtering and drying.

The application relates to the technical field of fin processing, in particular to an electronic-grade fin automatic production line based on graphene and a production process thereof, and the electronic-grade fin automatic production line based on graphene, which comprises a supporting table, a plurality of supporting legs are fixedly installed at the bottom of the supporting table, mounting blocks are installed on the two sides of the supporting table, a first composite roller is arranged on the supporting table and mounted on the mounting blocks, a first silica gel protective film roll and a second silica gel protective film roll are symmetrically installed on one side of the first composite roller, the positioning conveying mechanism is arranged, a structure for conveying and positioning graphene materials and film bodies is arranged on the composite roller, the composite roller can stably convey the graphene materials and the film bodies, the two can be completely compounded, graphene material and film body deviation is avoided, and the processing quality of the graphene fin is prevented from being affected.