524results about How to "Improve surface roughness" patented technology

The invention provides a high-temperature-resistant carbon fiber reinforced phenolic resin composite material and a preparation method thereof. The preparation method comprises the following steps: firstly, carrying out high-temperature oxidation treatment on carbon fibers; secondly, carrying out surface modification on the carbon fibers by using a chemical modifier; then mixing the modified carbon fiber, an antioxidant and a dispersing agent to prepare slurry; performing vacuum filtration on the prepared slurry, and drying to obtain a carbon fiber blank; preparing a phenolic resin infiltration solution, and impregnating the carbon fiber blank with the phenolic resin infiltration solution; and finally, carrying out mold pressing and curing to obtain the high-temperature-resistant carbon fiber reinforced phenolic resin composite The preparation method is simple in required equipment, convenient to operate, stable in process, high in production efficiency and suitable for large-scale industrial production. According to the high-temperature-resistant carbon fiber reinforced phenolic resin composite material prepared by the preparation method, the bonding property between the carbon fiber and the phenolic resin is improved, certain toughness and strength are provided, and meanwhile, the high-temperature-resistant carbon fiber reinforced phenolic resin composite material has the advantages of ablation resistance, good oxidation resistance in a high-temperature environment and the like.

The invention discloses a modified aramid fiber as well as a preparation method and application thereof. The modified aramid fiber comprises an aramid fiber and a carbon nanotube, the aramid fiber and the carbon nanotube are connected through an amido bond, the length of the carbon nanotube is 1-5 [mu] m, and the surface of the carbon nanotube is grafted with an amino-containing polymer. According to the modified aramid fiber disclosed by the invention, the surface roughness of the aramid fiber is improved due to the fact that the carbon nanotubes with the length of 1-5 microns are grafted on the surface, so that the aramid fiber and the epoxy resin generate a mechanical locking effect. Furthermore, the amino groups on the surface of the modified aramid fiber are covalently bonded with the epoxy resin, so that the bonding force between the fiber and the resin is further improved. In addition, the modulus of the introduced interface layer is between the modulus of the resin and the modulus of the aramid fiber, so that the defects at the interface of the fiber composite material under working conditions can be reduced. Meanwhile, the modified aramid fiber can be continuously produced, the treatment process is simple, efficient and green, and industrial amplification is facilitated.

The invention relates to a method for changing the surface performance of a collagen casing. The method comprises the following steps: treating cow split leather treated by a peeling machine by using an ammonium sulfate solution, and then treating the cow split leather by using a buffer solution; the preparation method comprises the following steps: uniformly mixing cleaned cow split leather with ice water, dicing and grinding to obtain collagen leather pulp; mixing the mucilage and a hydrochloric acid solution, adding cellulose into the hydrochloric acid solution to obtain a crude collagen colloid, and standing until the colloid is fully swelled; and homogenizing by using a homogenizer, extruding by using an extruder, and drying to obtain the tubular collagen casing. The preparation method has the advantages that the collagen casing is prepared by a wet method, a specific amount of cellulose is added during preparation to enter a network structure originally independently formed by collagen, the network space is filled, the surface roughness of the casing is increased, and meanwhile, the cellulose is combined with collagen molecules through chemical bonds to increase the stability of the network structure, so that the collagen casing is prepared. The surface performance of the casing is changed, the surface roughness is increased, the friction force between the sausage and a package is small, and the sausage is easier to package.

The invention provides a surface cubic-phase-rich functional modified hard alloy and a preparation method, and belongs to the technical field of hard alloy cutter materials. According to the method, tungsten carbide is subjected to yttrium doping treatment, boron-containing titanium carbide and cobalt-molybdenum composite powder are used together, a nitriding sintering process is combined, diffusion and permeation of nitrogen atoms are promoted, the microstructure of the alloy is regulated and controlled, enrichment of a cubic phase on the surface of the alloy is achieved, and the surface-rich cubic phase functional modified hard alloy is obtained; the Vickers hardness and the heat conductivity coefficient of the hard alloy material are effectively improved, and meanwhile the friction coefficient of the material is reduced; the surface layer rich cubic phase of the modified hard alloy material is provided with the functional gradient layer, the binding force of a coating of a tool material prepared from the modified hard alloy material and a matrix can be improved, and therefore the service life of the tool material is prolonged.

The invention discloses a preparation method of an antibacterial PEEK material for bone implantation. The preparation method comprises the following steps: carrying out sand blasting treatment on the surface of a PEEK sample; immersing the sandblasted PEEK sample into a mixed solution containing concentrated sulfuric acid and hydrogen peroxide, and carrying out chemical sulfonation treatment; immersing the sulfonated PEEK sample into a dopamine solution, so that dopamine is oxidized and self-polymerized on the surface to form a PDA coating; immersing the PEEK sample with the PDA coating into an antibacterial drug solution, so that the antibacterial drug is loaded on the surface; carrying out heat treatment on the PEEK sample loaded with the antibacterial drug; thoroughly cleaning the sample, removing uncombined antibacterial drug molecules, and drying; through sand blasting treatment and sulfonation treatment, the surface roughness and hydrophilicity of the PEEK material are remarkably improved, and favorable conditions are provided for adhesion of a dopamine coating and an antibacterial agent; due to introduction of the dopamine coating, the biocompatibility and the adhesion of the material are enhanced, and the dopamine coating also serves as an effective carrier of antibacterial drugs, so that the antibacterial function is maximized.

The invention discloses a high-hydrolysis-resistance glass fiber reinforced polyester material, which is prepared from the following raw materials in parts by weight: 36 to 65 parts of mixed modified polyester resin, 9 to 25 parts of glass fiber, 6 to 11 parts of hydrolysis-resistant agent, 4 to 15 parts of toughening agent, 2 to 8 parts of buffering agent, 0.2 to 0.5 part of compatilizer, 0.1 to 1.0 part of lubricating agent and 3 to 10 parts of halogen-free flame retardant, the modified polyester resin comprises organic silicon modified polyester resin and acrylate modified polyester resin. The modified mixed polyester resin material is used as the raw material of the polyester material, so that the polyester material can fully combine the advantages of the organic silicon modified polyester resin and the polyacrylate modified polyester resin, and terminal carboxyl groups in a polyester molecular chain are reduced by using the mixed modified polyester resin, so that the hydrolysis reaction is inhibited, and the service life of the polyester material is prolonged. Therefore, the hydrolysis resistance of the polyester material is improved.

The invention discloses an ink-friendly BOPP (Biaxially-oriented Polypropylene) film as well as a preparation method and application thereof, and relates to the field of organic materials. The BOPP film comprises polypropylene A, white master batch and foaming master batch; the white master batch comprises polypropylene B, nuclear titanium dioxide, PE wax, a dispersing agent and a blue pigment. In the white master batch, the nuclear titanium dioxide is used for replacing titanium dioxide, so that the flowability of the master batch can be improved, the filter pressing value can be reduced, the pressure in front of a filter screen is small, the current load is low, the continuous film breaking time is delayed in the preparation process of the BOPP film, and the production smoothness is improved; the core titanium dioxide is not easy to agglomerate in a polypropylene system, so that the core titanium dioxide is uniformly dispersed, and due to the irregular structure that small balls coat large balls specific to the core titanium dioxide particles, porous gaps are formed in the BOPP film, the porosity is improved, the film density is obviously reduced, the addition amount of foaming master batches can be reduced, and the prepared BOPP film is high in surface roughness, high in ink adhesion and good in mechanical property. And the BOPP film is excellent in performance.

The invention relates to the field of polyolefin plastics, in particular to a glass fiber reinforced modified polyolefin plastic and a preparation method thereof, which are used for solving the problem that the application of the existing glass fiber reinforced modified polyolefin plastic in some high-performance fields is limited due to poor mechanical strength and flame-retardant and fireproof performance of the existing glass fiber reinforced modified polyolefin plastic. According to the preparation method, the organic phosphorus-nitrogen modified glass fiber is added into the polyolefin resin to serve as a reinforcing agent, so that the polyolefin plastic not only is obviously improved in mechanical property, but also can keep relatively good performance in a high-temperature environment, and the flame retardant property and the fireproof grade are obviously improved; and the fireproof door can meet the fireproof standard with higher requirements. Meanwhile, according to the preparation method, a reasonable production process and technical means are adopted, and good combination of the glass fiber and the polyolefin material is ensured, so that comprehensive optimization of the plastic performance is realized, the performance and the application range of the polyolefin plastic are remarkably improved, and the requirement of high-performance application under various complex environmental conditions is met.

The invention relates to the technical field of all-vanadium redox flow batteries, and discloses a carbon grid derived multi-layer composite bipolar plate for a vanadium battery and a preparation method of the carbon grid derived multi-layer composite bipolar plate for the vanadium battery. The preparation method comprises the following steps: brushing a mixed slurry 1 prepared from a conductive filler, a binder and the like onto the surface to obtain preliminarily modified carbon fibers, then brushing a mixed slurry 2 prepared from oxide nanoparticles, conductive macromolecules and the like onto two surfaces of the preliminarily modified carbon fibers, drying, and repeating the two brushing and drying steps to obtain multi-layer conductive support layer modified carbon fibers; graphite paper is attached to the obtained carbon fibers, and then hot pressing treatment is performed to obtain the carbon conductive grid derived multi-layer composite bipolar plate. According to the prepared multi-layer composite bipolar plate, the etched carbon fiber is used as a substrate, beneficial mechanical strength and conductive grids are provided through stacking of the multiple layers of conductive coatings, the stability and conductivity of the bipolar plate are effectively improved, and therefore the efficiency of a vanadium battery is improved.

The invention discloses a high-activity chemical copper plating solution and a chemical copper plating method, and relates to the technical field of chemical copper plating, and the chemical copper plating solution comprises the following components: a copper ion source, a biological enzyme, a natural polymer complexing agent, a pH regulator and a stabilizer; according to the method, the specific bio-enzyme is adopted as the chemical copper plating catalyst, the remarkable catalytic effect is shown, the bio-enzyme has efficient selectivity and catalytic activity, reduction and deposition of copper ions can be accelerated under the mild condition, and therefore reaction energy consumption and equipment requirements are reduced, meanwhile, use of chemical reagents is reduced, and the cost is reduced. In addition, natural polymer complexing agents such as chitosan and sodium alginate have good biocompatibility and degradability and can form a stable complex with copper ions, the stability and the copper plating effect of the plating solution are enhanced, and by designing the natural polymer complexing agent with a specific structure such as a hyperbranched structure, the copper plating effect of the plating solution is improved. And the complexing ability and the performance of the copper plating solution are further improved.

The degradable breast prosthesis shaping net bag with the heterogeneous hierarchical porous structure is composed of the large-aperture structure layer and the micro-aperture structure layer, the large-aperture structure layer and the micro-aperture structure layer are formed by combining degradable fibers in a staggered mode, the degradable breast prosthesis shaping net bag and the breast prosthesis are perfectly conformal, and the mechanical property and the tissue adhesion property needed by the net bag are provided; the two cooperate to realize the integration function of the prosthesis and the tissue, and an additional suture fixing device is not needed; the overall shape of the net bag is designed to be the hemispherical upper cover and the lower end cover edge, the process of adding the net bag and a prosthesis is simplified, the operation efficiency is improved, the net bag has excellent mechanical performance and shaping capacity, the micropore structure is beneficial to adhesion and immigration of cells, rejection reaction of a body is reduced, the incidence rate of capsular contracture is remarkably reduced, and the net bag is suitable for popularization and application. The invention has the characteristics of hierarchical porous structure design, mechanical shaping capability customization and capsule contracture prevention, and provides an innovative breast prosthesis shaping and biological performance improvement scheme for breast cancer patients.

The invention relates to the technical field of spinning forming, in particular to a current-assisted spinning forming device and method.The current-assisted spinning forming device comprises a core mold switching disc arranged on a machine tool, a core mold insulating base plate is fixed to the core mold switching disc, and a core mold penetrating through the core mold insulating base plate and connected with a main shaft of the machine tool is rotationally installed on the core mold switching disc; the clamping assembly is arranged on the machine tool, and a metal blank abutting against the core mold abuts against the clamping assembly; the workpiece forming assembly is arranged on the machine tool and used for machining the metal blank; the current applying mechanism is arranged on the workpiece forming assembly, and the workpiece forming assembly can drive the current applying mechanism to move to the position matched with the metal blank so as to heat the metal blank. And the pulse current is introduced into the spinning plastic deformation area.

The invention discloses a carbon-material-doped titanium-based tin-antimony-nickel composite coating electrode and a preparation method and application thereof.The specific process includes the steps that a titanium sheet is pretreated, the treated titanium sheet is placed in electro-deposition liquid to be subjected to constant-temperature pulse electro-deposition, the titanium sheet is dried through a drying oven and then roasted in a muffle furnace, and a carbon-material-doped middle layer is obtained; and then the carbon material doped titanium-based tin-antimony-nickel composite coating electrode is obtained through cyclic thermal oxidation and quenching processes. According to the preparation scheme provided by the invention, the electrode surface is thick and rough, has a large number of defects and is excellent in electrocatalytic activity. Compared with a single coating, the composite coating has longer service life and higher ozone generation efficiency in the application of preparing ozone by electrolyzing water.

The invention discloses a high-precision part machining path planning method based on artificial intelligence optimization, and the method comprises the following steps: generating a first three-dimensional geometric model of a to-be-machined part, carrying out the curved surface division, and obtaining a manufacturing feature point according to a division result; determining a processing placement surface for the first three-dimensional geometric model according to the manufacturing feature points, and performing processing element positioning and shaping to obtain a second three-dimensional geometric model; processing path preliminary planning is carried out, optimization is carried out based on mixed # imgabs0 # equilibrium by using a neural network, and a second planning processing path is output; performing path optimization based on a Gaussian distribution function and a cubic # imgabs1 # spline curve to obtain a third planning processing path; and simulation verification is carried out, path adjustment and optimization are carried out by adopting a hierarchical optimization ant colony algorithm according to a verification result, and a final planning processing path is output. The precision, the efficiency, the flexibility and the adaptability in the high-precision part machining process are improved.

The invention discloses a woven carpet of various plant fibers, which is characterized in that warp yarns A comprise yarns A spun by sisal fibers, warp yarns B comprise yarns B spun by hemp fibers or blended by hemp fibers and cotton fibers, weft yarns are yarns C spun by banana tree stem fibers, the weft yarns are wound above or below the warp yarns A in a staggered manner, two warp yarns A are wound by the weft yarns each time, and the weft yarns are wound by the weft yarns each time. The warps B are located between every two adjacent warps A at intervals, the wefts wound below the warps A are wound below the warps B in a staggered mode or between the warps B and the warps A, and the directions of every two adjacent wefts vertically wound on the warps A and the warps B are opposite. According to the structure, the thickness of the woven carpet made of various plant fibers is increased, and the top surface of the carpet is made of natural plant fibers; the friction coefficient between the silica gel layers on the surfaces of the warps B and the ground is large, so that slipping between the carpet and the ground is avoided, the warps A and the wefts can be matched to be woven more tightly through the action of the silica gel layers, and the overall softness of the carpet is further improved.

The invention discloses a glass fiber reinforced nylon material with high alcoholysis resistance, and relates to the technical field of glass fiber reinforced nylon materials. Raw materials of the high-strength and high-toughness composite material comprise the following components in parts by weight: 30-43 parts of PA46, 20-25 parts of PA66, 15-7 parts of PA115, 3-5 parts of bio-based nylon, 20-45 parts of alkali-free glass fibers, 1-3 parts of polyethylene, 0.5-3 parts of an antioxidant, 0.2-3 parts of a heat stabilizer, 0.1-5 parts of a compatilizer, 1-5 parts of a flexibilizer, 0.2-0.5 part of a hydrolysis-resistant agent, 1-2 parts of an ultraviolet light absorber, 0.1-2 parts of a silane coupling agent, 0.1-0.5 part of a nucleating agent, 1-5 parts of hollow glass beads and 3-8 parts of mica. The glass fiber reinforced nylon material is prepared by mixing the raw materials according to the set proportion and sequence, the glass fiber reinforced fiber material with high alcoholysis resistance is finally obtained, a small amount of mica is added into the matrix raw materials, the insulativity and heat resistance of the prepared glass fiber reinforced nylon material are improved to a certain extent, and the service life of the glass fiber reinforced nylon material is prolonged. The range of products made of the material is expanded, the stability of the products is improved, and the products can resist corrosion of strong acid and strong alkali.

The novel geomembrane double-track sweat soldering process comprises the steps that the surface of a reservoir bottom is subjected to leveling and roughening treatment, so that the roughness depth of the surface of the reservoir bottom is 3-5 mm; cutting the geomembrane into proper sizes, numbering and recording the geomembrane piece by piece, and pressing and covering the exposed edge of the geomembrane through a sand bag; the TPO geomembrane, the novel geomembrane and the HDPE geomembrane are in lap joint in sequence in a staggered mode and welded through a double-track automatic hot melting welding machine, and the edges of the adjacent geomembranes are fused; marking the detected defects on the geomembrane, and arranging repair until the retest is qualified; the novel geomembrane comprises a base material layer and an anti-skid layer, the lower surface of the base material layer is coated with the anti-skid layer, and the thickness ratio of the base material layer to the anti-skid layer is 1: (0.1-0.3). The frosted surface of the novel geomembrane can be tightly attached to the rough surface of the reservoir bottom, the frosted surface and the rough surface are not prone to relative sliding, the service life of the geomembrane is prolonged, and the engineering anti-seepage requirement is met.

The invention discloses a graphene-coated hard carbon negative electrode material and a preparation method thereof, and belongs to the technical field of hard carbon negative electrode materials. The preparation method of the graphene-coated hard carbon negative electrode material comprises the following steps: carrying out pretreatment and three-step soaking on coconut shells, carrying out biomass carbonization, mixing with a microbial suspension, and adsorbing to obtain a microbial adsorption type hard carbon material; and then carrying out surface treatment, chemical vapor deposition, impregnation, secondary chemical vapor deposition and annealing treatment on the microbial adsorption type hard carbon material to obtain the graphene coated hard carbon negative electrode material. The negative electrode material prepared by the method is high in first discharge capacity, high in first coulombic efficiency and good in cycle performance.

The invention provides an aluminum alloy wire and a preparation method thereof. The aluminum alloy wire comprises the following elements in percentage by mass: 0.1 to 7.0 percent of Zn element, 0.2 to 9.6 percent of Mg element, 0.1 to 6.0 percent of Cu element, 0.01 to 1.2 percent of Mn element, 0.1 to 2.0 percent of Fe element, 0.1 to 2.5 percent of Si element, less than or equal to 0.15 percent of inevitable impurities and the balance of Al element, the surface brightness L of the aluminum alloy wire is greater than 60, and the surface brightness color difference E is less than or equal to 0.5; the average roughness Sa is less than or equal to 0.4 mu m, and the maximum peak height Sp is less than or equal to 2.0 mu m; the aluminum alloy wire does not crack after 85% compression deformation; under the test conditions that the temperature is 35 DEG C, and the aluminum alloy wire is placed in a mixed solution of a 57g / L NaCl solution and a 10mL / L H2O2 solution to be soaked for 6 hours, the corrosion depth of the aluminum alloy wire is smaller than or equal to 10 micrometers.

The invention discloses a novel single-rail extrusion welding process for a geomembrane. The process comprises the following steps: carrying out leveling treatment and drying treatment on the surface of a reservoir bottom; the geomembrane is cut into a proper size and laid on the surface of the reservoir bottom, and the lap joint area is kept in a flat state; the TPO geomembrane, the novel geomembrane and the HDPE geomembrane are sequentially lapped in a staggered joint mode and welded through a single-rail extrusion welding machine, so that intersection points formed among membrane blocks are in a T shape; testing the geomembrane, and marking and repairing the found defect part until the retest is qualified; the novel geomembrane comprises a base material layer and an anti-ultraviolet layer, the upper surface of the base material layer is coated with the anti-ultraviolet layer, and the thickness ratio of the base material layer to the anti-ultraviolet layer is 1: (0.1-0.5). The construction is convenient, the adopted novel geomembrane has the excellent deformation adaptive capacity of an elastic material and the weldability of a plastic material, and when the geomembrane is used for seepage control of a reservoir area, leakage damage to a reservoir bottom connecting part can be avoided.

The utility model discloses a tumbling cutter for rolling finish machining of a metal workpiece, which relates to the technical field of rolling machining cutters, solves the technical problems of lower surface roughness grade, complex structure and smaller machining range in the prior art, comprises a cutter handle, and is characterized in that a pin shaft is fixedly mounted on the cutter handle; a deep groove ball bearing is installed on the pin shaft, a steel ball frame is fixedly installed at the front end of the cutter handle, a steel ball hole is formed in the front end of the steel ball frame, and a hard alloy ball is movably installed in the steel ball hole. Components are few, the structure is simple, manufacturing and maintenance are easy, and production efficiency is improved; the contact surface of the tumbling cutter is small, large pressure can be obtained, equipment load is reduced, abrasion is relieved, and the service life of equipment is prolonged; the deep groove ball bearing serving as a supporting element is small in friction coefficient and beneficial to maintaining the rolling state; and the production flexibility is improved due to the workpieces which can be subjected to roll finishing.

The invention discloses a deoxidation composition and a preparation method thereof, and relates to the technical field of deoxidation process, the deoxidation composition comprises 1-15% of inorganic acid, 1-5% of organic acid, 5-25% of peroxide, 0.1-3% of complexing agent, 0.01-5% of surfactant and 40-80% of water. According to the deoxidation composition provided by the invention, the complexing agent and the surface complexing agent are added, so that a deoxidation solution has a good etching rate, relatively high copper solubility, excellent copper surface roughness, excellent plating discoloration resistance and high working efficiency, and can be produced and used on a large scale.

The invention relates to the technical field of lead frame coarsening, in particular to a nickel coarsening process of a lead frame. A nickel coarsening process of a lead frame comprises the following procedures of oil removal, acid pickling, nickel electroplating coarsening and acid pickling, the nickel electroplating coarsening refers to that an electroplating coarse nickel layer is obtained in an electroplating bath loaded with nickel electroplating coarsening liquid in an electroplating mode, and the nickel electroplating coarsening liquid comprises 90-130 g / L of nickel aminosulfonate, 40-50 g / L of boric acid and 0.1-0.3 g / L of an additive. According to the nickel roughening process of the lead frame, the rough nickel layer can be directly obtained, and the copper substrate does not need to be treated, namely additional electroplating pretreatment is not needed. According to the nickel coarsening process, crystallization of nickel ions on the surface of the lead frame is remarkably affected in the nickel electroplating deposition process through the additive in the nickel electroplating coarsening liquid, the limiting current density of the nickel electroplating coarsening liquid is reduced, deposition of a high-current-density area is restrained, nearly-spherical round grains are formed, and the nickel electroplating quality is improved. Meanwhile, the process of electron deposition of nickel ions is accelerated, cathodic polarization is reduced, growth of nickel crystal nucleuses is promoted instead of nucleation, large-size particles are formed, the surface roughness is improved, an electroplating coarse nickel layer with certain roughness is finally formed, the content of nickel metal in an electroplating nickel coarsening solution cannot be continuously increased, wastewater discharge is reduced, and the production cost is reduced. The environment is protected.

The utility model relates to a nickel net which is characterized in that the nickel net is a multi-strand stranded wire nickel net and comprises transverse stranded wires and longitudinal stranded wires, the transverse stranded wires and the longitudinal stranded wires are woven in a transverse and longitudinal staggered mode to form the nickel net, the transverse stranded wires are formed by stranding a plurality of strands of first nickel monofilaments, and the longitudinal stranded wires are formed by stranding a plurality of strands of second nickel monofilaments. Compared with a traditional nickel net weaving mode, the nickel net and the production process thereof have the advantages that the multi-strand stranded wire nickel net has higher surface area and surface roughness, and has better surface adhesion effect and fewer surface adhesion defects after spraying treatment, so that the catalytic activity of the surface of an electrode is improved, the hydrogen evolution overpotential is reduced, and the service life of the electrode is prolonged. The water electrolysis hydrogen production efficiency is improved.

The invention discloses a pressure reducer shell surface modification method, which belongs to the technical field of pressure reducer shell processing, and comprises the following steps: (1) surface oil removal and cleaning treatment, (2) surface shot blasting treatment, (3) surface electric arc spraying treatment, and (4) cooling treatment. The treatment process is simple in step and reasonable in matching, the surface characteristics of the pressure reducer shell are effectively enhanced, the corrosion resistance and weather resistance of the pressure reducer shell are remarkably enhanced, and the service life of the pressure reducer shell is effectively prolonged.

The invention relates to a non-polar thermoplastic plate with a polar surface coating as well as a preparation method and application of the non-polar thermoplastic plate, and belongs to the technical field of automobile coatings. The problems that in the prior art, in the process of attaching a paint film to the surface of a non-polar thermoplastic plate, a base material is prone to thermal stress or deformation, the paint film is uneven in attachment and prone to falling off or peeling off, cost is high, process time is long, and industrialization is difficult to achieve are solved. According to the method, low-cost polyphenol and amine substances are used for spraying codeposition, and a particle coating with a certain thickness and roughness is formed on the surface of the non-polar thermoplastic plate by regulating and controlling the condition parameters of the spraying process, so that the adhesion capacity of the surface of a matrix is enhanced; the introduced active groups increase the surface polarity of the matrix and enhance the interface bonding between the matrix and the paint film; the particle coating is prepared at normal temperature, so that thermal stress or deformation caused by heating of a matrix is avoided; and by adopting the processes of adding a strong oxidant and spraying and codepositing, the modification time is greatly shortened, the working efficiency is improved, and the industrial production of the modified non-polar thermoplastic plate is promoted.

The invention discloses a cold cutting flying saw machine which comprises a cold cutting table, a bottom table and a cuttings collecting bin, in the using process of the cold cutting flying saw machine, air in an inner cavity of a non-slip convex pad is exhausted and then is completely flattened, so that the contact between the non-slip convex pad part and the bottom of a plate workpiece is enlarged, and the cutting efficiency is improved. Meanwhile, the surface roughness of the non-slip convex pad area can be improved through the arrangement mode of multiple holes in the surface of the non-slip convex pad, so that the sliding problem possibly occurring in the cold cutting machining process of the plate workpiece is avoided, and a hydraulic telescopic rod drives a keeping ball part to move to be close to the side face of the high-speed steel circular saw blade; then the keeping balls are slightly attached to the surface of the high-speed steel circular saw blade so that the vertical state keeping function of the high-speed steel circular saw blade in the cold cutting process can be achieved, meanwhile, due to the fact that the triangular mounting frame is provided with multiple sets of end points, the high-speed steel circular saw blade can be laterally subjected to multi-point synchronous calibration supporting, and the stability of the high-speed steel circular saw blade in the cutting and milling process is further improved; the service life of the high-speed steel circular saw blade is ensured.

The invention belongs to the technical field of machining, and particularly relates to a high-precision universal grinding wheel trimming mechanism, a fillet trimming method thereof and a base. The arc-shaped guide rail is fixedly installed on the base and provided with an arc-shaped guide groove, and an arc-shaped conical rack is fixed in the arc-shaped guide groove; the rotary sliding block is slidably mounted on the arc-shaped guide rail, and a position adjusting rod device and a cutter device are mounted on the rotary sliding block; all planes of a grinding wheel can be finished accurately, rapidly and safely, meanwhile, arc surfaces needed for machining of inner and outer circle grinding wheels can be finished, the arc surfaces of machined parts have high geometric precision and surface roughness, the size precision can reach 0.02 mm, the mechanism further has the function of adjusting the radius of the finished arc, and the machining efficiency is improved. Finishing of different arc radiuses can be met, and the machining precision and the machining range of common equipment are greatly improved.

The invention relates to the technical field of water treatment, and particularly discloses a submerged plant planting substrate for water treatment and a preparation method thereof. The submerged plant planting matrix for water treatment is prepared from the following raw materials in parts by weight: 30-40 parts of Fe3O4 particles; 15 to 20 parts of TiO2 supported tourmaline; 100 to 120 parts of ore particles; 20 to 25 parts of graphene hollow active carbon fiber; 10 to 15 parts of water; 1-3 parts of a binder; the preparation method comprises the following steps: firstly, mixing, dipping and drying the TiO2 supported tourmaline and the graphene hollow active carbon fiber to obtain a mixed material, then blending the mixed material with other raw materials, rolling, distributing holes, firing and cooling to obtain the submerged plant planting matrix. Submerged plants are planted in the planting matrix, and the ecological floating bed formed by the planting matrix and the submerged plants can effectively purify water and efficiently remove pollutants.

The invention discloses a copper water heat pipe based on laser enhanced capillary performance and a machining method thereof.The copper water heat pipe comprises a pipe body, a pipe cavity is formed in the pipe body, a first capillary structure composed of a plurality of grooves is arranged on the inner side wall of the pipe body, and the grooves are evenly distributed around the inner side wall of the pipe body at equal angles; the inner wall of the groove is provided with a micron-sized groove, the surface of the micron-sized groove is provided with nano-sized pores, the two ends of the pipe body are sealed, and the pipe cavity is filled with a liquid working medium, so that the capillary performance of the copper water heat pipe can be improved on the basis of not introducing other elements, and the heat transfer capacity of the heat pipe is further improved.