83results about How to "Increase surface roughness" patented technology

A gate oxide and method of fabricating a gate oxide that produces a more reliable and thinner equivalent oxide thickness than conventional SiO2 gate oxides are provided. Gate oxides formed from alloys such as cobalt-titanium are thermodynamically stable such that the gate oxides formed will have minimal reactions with a silicon substrate or other structures during any later high temperature processing stages. The process shown is performed at lower temperatures than the prior art, which inhibits unwanted species migration and unwanted reactions with the silicon substrate or other structures. Using a thermal evaporation technique to deposit the layer to be oxidized, the underlying substrate surface smoothness is preserved, thus providing improved and more consistent electrical properties in the resulting gate oxide.

In a method for producing a three-dimensionally shaped object, a powder layer is formed by feeding a powdery material to a substrate and a solidified layer is formed by irradiating a light beam on a specified portion of the powder layer to sinter or melt the specified portion of the powder layer. A three-dimensionally shaped object having a plurality of solidified layers laminated one above another is obtained by repeating the powder layer formation and the solidified -layer formation. In the method, a stress is preliminarily applied to the substrate to reduce the amount of deformation of the substrate after production of the shaped object prior to the powder layer forming step.

The invention relates to the technical field of water treatment, and particularly relates to a composite coalescence material for water deoiling prepared using a specific method. The composite coalescence material is prepared by the following steps: carrying out ultrasonic cleaning on polypropylene fibers to remove surface grease, carrying out graft copolymerization by combining a mixed solution of potassium permanganate and sulfuric acid as an initiator with an ethyl acrylate solution so as to modify the fibers, wherein the surface roughness of the modified fibers is increased, and meanwhile, the lipophilicity and hydrophobicity of the fibers are increased; then carrying out hybrid braiding on the modified polypropylene fibers and 304 stainless steel metal wire in a certain proportion, so as to form oleophylic and hydrophobic composite fibers; and weaving the composite fibers in a *-shaped weaving manner, so as to obtain the composite coalescence material for water deoiling. The effective contact area between the composite coalescence material and liquid is greatly increased, and liquid can be effectively coalesced and can effectively grow, so that the oil-water separation purpose is achieved.

The invention discloses a silk fibroin modified depression structure lactic acid-based polymer drug-carrying microsphere and a method for preparing the same. The method includes (1), dissolving a lactic acid-based polymer in dichloromethane to obtain solution 1; (2), mixing a hydrophobic drug and the solution 1 to obtain solution 2; (3), adding the solution 2 into polyvinyl alcohol aqueous solution under stirring; (4), continuing to stir, centrifuging, removing supernatant, washing with deionized water and carrying out freeze-drying to obtain a lactic acid-based polymer drug-carrying microsphere with depression structure; (5), uniformly mixing silk fibroin aqueous solution and the lactic acid-based polymer drug-carrying microsphere with depression structure to obtain a mixture, centrifuging, removing supernatant, adding glutaraldehyde aqueous solution, carrying out cross-linking, centrifuging, and carrying out freeze-drying. The lactic acid-based polymer drug-carrying microsphere and the method have the advantages that particle size of the lactic acid-based polymer drug-carrying microsphere is uniformly distributed, the method is simple and convenient, the lactic acid-based polymer drug-carrying microsphere is stable in structure, a drug can be slowly released, the hydrophilic properties of the surface of the drug and the structural strength of material can be improved by silk fibroin membrane on the surface of the drug, the release rate can be effectively reduced, and the release time can be prolonged.

The invention discloses a thin film transistor array substrate, a manufacturing method thereof and a displaying device. The method comprises the steps that a drain electrode and a source electrode are formed on a substrate; a planarization layer with a groove is formed; a touch metal layer with the upper surface flush with the upper surface of the planarization layer is formed; and a first insulation layer, a common electrode layer, a second insulation layer and a pixel electrode layer are formed. The surface concave-convex degree of the thin film transistor array substrate is improved, the adhesiveness between a PI film and the array substrate is improved, and the displaying performance of the displaying device is improved.

The invention discloses a rapid board-grinding and film-pasting method for an outer layer circuit board. The rapid board-grinding and film-pasting method comprises the following steps of putting a circuit board; performing acid washing; performing water washing for the first time; grinding the board by a needle brush; grinding the board by volcanic ash; removing the volcanic ash; drying by hot air; preheating the board surface; pasting a film; and collecting the board, wherein the grinding brush used in the step of grinding the board by the needle brush is 450#-550# needle brush; the volcanic ash used in the step of grinding the board by the volcanic ash is 18-25% in concentration; the first group of hot pressing rolling wheels of the film-pasting machine used in the film-pasting step are 68 plus or minus 2 degrees in hardness; the second group of hot pressing rolling wheels of the film-pasting machine used in the film-pasting step are 72 plus or minus 2 degrees in hardness; the two groups of the hot pressing rolling wheels of the film-pasting machine used in the film-pasting step are 5.5-6.5kg / cm<2> in pressure; and the two groups of the hot pressing rolling wheels of the film-pasting machine used in the film-pasting step are 115-135 DEG C in temperatures. By adoption of the rapid board-grinding and film-pasting method, the film-pasting speed can reach 3.8-4.0m / min; and meanwhile, the quality of the product can be ensured.

The present invention discloses a water permeability concrete barrier board and a preparation method thereof, and belongs to the field of hydraulic engineering and marine engineering. According to the water permeability concrete barrier board, the large doping amount fly ash cementing material or composite cementing material is adopted as the substrate, the nanometer bentonite modified potassium magnesium phosphate cement protection reinforcing steel bar or FRP bar is adopted as the reinforcement material, the reinforcing steel bar matching and protection surface parameter is calculated according to the used environment, and the water permeability concrete edge beam, the concrete floor protection plate and the water permeability concrete grid are subjected to cast-in-site and partial or whole precast so as to obtain the water permeability concrete barrier board, wherein the surface roughness is increased, and the water permeability effects of the communication hole between the edge beam and the internal of the grid is provided, such that the levee protection surface structure can be endowed with the water permeability energy dissipation, the maximum forward direction wave pressure intensity can be weakened, and the wave climb performance can be limited; and the 28 day compressive strength of the water permeability concrete of the water permeability concrete barrier board is more than 40 MPa, the levee top wave overtopping of the water permeability concrete barrier board is reduced by 15-25% compared with the ordinary barrier board, and the water permeability concrete barrier board can be used for the protection surface structure of the river bank, the sea bank and the training jetty of the sea bank, wherein the integrated precast barrier board can be reused.

The invention discloses a low-water-absorptivity self-extinction photo-cured waterborne polyurethane acrylate cured film as well as a preparation method and application thereof. The method comprises the following steps of: (1) taking alicyclic diisocyanate, oligomer polyester diol and hydroxyl-terminated polydimethylsiloxane as main polymerization monomers to obtain an isocyanate group-terminatedprepolymer I; then adding an end-capping reagent and a polymerization inhibitor for reaction to obtain a prepolymer II; and finally, neutralizing and emulsifying the prepolymer II to obtain the self-extinction photo-cured waterborne polyurethane acrylate emulsion; and (2) adding a photoinitiator into the polyurethane acrylate emulsion, removing moisture, and carrying out ultraviolet irradiation toobtain the low-water-absorptivity self-extinction photo-cured waterborne polyurethane acrylate cured film. Hydrophobic hydroxyl-terminated polydimethylsiloxane is introduced into a molecular structure, so that the water absorption rate of a coating film is reduced, and the water absorption rate of the coating film is further reduced through a cross-linked network formed by photocuring, so that the protection effect on a base material is improved.

The invention discloses an anti-floating anchor rod. The anti-floating anchor rod comprises an anchor rod body and an anchor rod pile coating the anchor rod body; the anchor rod pile is a concrete pile with the strength being at least C25 and comprises a main pile body and an expanding head connected at the bottom of the main pile body; the expanding head and the main pile body are arranged coaxially and are integrally molded; and the diameter of the expanding head is larger than that of the main pile body. The anchor rod pile of the anchor rod is the concrete pile and comprises the main pilebody and the expanding head connected at the bottom of the main pile body, and the diameter of the expanding head is larger than that of the main pile body, so that the anti-floating anchor rod is high in anti-floating ability. The invention further discloses two construction methods of the anti-floating anchor rod. The two construction methods have the advantages that the methods are simple to operate and the friction force between the molded anchor rod pile and an anchor hole is large.

The invention discloses a method modifying aramid fibers in a supercritical carbon dioxide environment to increase mechanical performance and surface performance. The method includes the steps of firstly, washing and drying the aramid fibers; secondly, loading the aramid fibers and a reagent into a sealed container, and allowing the aramid fibers to keep tension and not to contact with the reagent; thirdly, feeding carbon dioxide, and heating to rise temperature and pressure to allow the interior of the sealed container to be in a supercritical carbon dioxide state; fourthly, after the swelling reaction, slowly relieving pressure in a constant-speed manner to obtain the modified aramid fibers; fifthly, washing and drying the modified aramid fibers. The method has the advantages surface activation and longitudinal tensile strength increasing of the aramid fibers are achieved, fiber skin layer and core layer combination is reinforced through the crosslinking reaction among molecular chains inside the fibers, the skin-core structure is improved, fiber transverse strength is increased, and the method is of important significance to the modification and use efficiency increasing of thearamid fibers.

A method of manufacturing artificial turf includes the steps of: creating a polymer mixture including at least one polymer and a nucleating agent for crystallizing the at least one polymer, extruding the polymer mixture into a monofilament; quenching the monofilament; reheating the monofilament; stretching the reheated monofilament to form the monofilament into an artificial turf fiber, wherein during the stretching the nucleating agent boosts the creation of crystalline portions of the polymer within the monofilament; incorporating the artificial turf fiber into an artificial turf backing, thereby mechanically fixing the monofilaments of the arranged artificial turf fibers in the artificial turf backing.

The invention discloses a preparation device of a plasma-modified glass fiber. The preparation device comprises a pulse power source device, a discharge device and a measuring device, wherein the pulse power source device comprises a pulse power source and a voltage regulator connected with the pulse power source; the discharge device comprises a high-voltage electrode and a ground electrode; the lower surface of the high-voltage electrode is provided with a unilateral countercheck medium; the measuring device comprises an oscillometer. The preparation device can be used for solving the problem that the modified glass fiber prepared by an existing modification method is low in heat resistance and the composite material prepared by the modified glass fiber can not adapt to use environments with relatively high temperature. The invention also discloses a method for peparing the plasma-modified glass fiber. The method comprises the following steps: step 1, preprocessing the glass fiber; step 2, performing plasma modification on the preprocessed glass fiber by use of the preparation device of the plasma-modified glass fiber. The invention also discloses a composite material prepared by use of the plasma-modified glass fiber, and the mass ratio of the plasma-modified glass fiber and epoxy resin is 30 to (100-110).

The invention discloses a preparation method of coarse denier polyester monofilaments, an engineering composite material wrapped stiffener and a preparation method thereof. Viscosified polyester chips are fused through a screw after dried, are squeezed by parallel porous spinneret plates, are cooled and extended through a cooling bath after extruded and adhered by spray mouths, and are shaped and wound under low temperature after a post extension outside the cooling bath, after the prepared coarse denier polyester monofilaments are preliminarily wrapped in the outer surface of an engineering composite material, the composite material slowly passes through a high-temperature setting stretcher, wherein high temperature can result in reaction of binding material in the composite material and a great amount of dissipated heat, the wrapped coarse denier polyester monofilaments shrink after heated and can tightly wrap the surface of the composite material and form uniformly spiral grooves on the surface of the composite material. The coarse denier polyester monofilaments have greater thermal shrinkage, stresses among fiber molecules can release under a heating condition in wrapping the engineering composite material, so as to form larger shrinkage force and enlarge the surface concave-convex property and the friction force of the engineering composite material.

The invention discloses an anti-falling gripper for the robot, and belongs to the technical field of robots. The robot can adapt to objects in different shapes by arranging multiple clamping modules, clamping blocks are pushed through electric rods to clamp the objects, friction blocks are used for making contact with the clamping blocks to push sliding rods to move backwards, electrorheological fluid and first springs in the clamping module are extruded, the electrorheological fluid is controlled to be solidified through a controller, the clamping module is kept stable, meanwhile, the situation that an object is damaged due to too large clamping force is avoided, unstable current is generated by a radiation metal rod and a conductor rail through rotation of a ball in a spherical cavity, and therefore whether the clamping module is clamped or not is judged; and after the controller controls the electrorheological fluid to be liquefied, repulsive force is generated in cooperation with an electromagnet, so that the clamping module is tightly attached to the object, and the stability of the device is further improved.

The invention discloses a preparation method of a multi-fiber-reinforced gypsum-based composite material. The preparation method is characterized in that the gypsum-based composite material is produced with dry-method-modified wollastonite fibers, surface-modified glass fibers and pre-treated carbon fibers as reinforcing materials, wherein the wollastonite fibers are subjected to dry method modification with stearic acid, the glass fibers are subjected to thermo-treatment and acid-treatment and then treatment with a coupling agent, and the carbon fibers are electrolyzed in an electrolyte. Gypsum powder is dry-mixed with the surface-modified glass fibers and pre-treated carbon fibers; then the wollastonite fibers are uniformly mixed with water; the dry mixture then is added to and doped with the wollastonite fibers and water; finally emulsified paraffin emulsion is added with uniform stirring, and then the mixture is injected into a mold to prepare the multi-fiber-reinforced gypsum-based composite material.

Enhanced heat transfer by kinetic movement of boundary layer film by introducing particles with specialized surfaces. A boundary layer is stagnant, reducing heat transfer into a flowing fluid. Boundary layer heat transfer is primarily conduction. The introduction of specialized particles into fluid promotes boundary layer mixing, thereby converting conduction to convection through the film. Particles of the invention tumble while mixing the boundary layer, which provides low surface area energy sites around the particles. Kinetic movement increases nucleation formation for gas phase transfer during boiling. Metal and ceramic nanoparticles in fluids increase fluid thermal conductivity. By modifying surface characteristics of such nanoparticles to promote boundary layer mixing, fluid heat transfer and thermal conductivity will increase. Specialized surface characteristics of materials ensure that particles interface with the boundary layer to produce kinetic mixing and low surface area energy sites for accelerated nucleation, resulting in enhanced heat transfer of gas or liquid.

The invention relates to the technical field of water treatment, and particularly relates to a composite coalescence material for water deoiling prepared using a specific method. The composite coalescence material is prepared by the following steps: carrying out ultrasonic cleaning on polypropylene fibers to remove surface grease, carrying out graft copolymerization by combining a mixed solution of potassium permanganate and sulfuric acid as an initiator with an ethyl acrylate solution so as to modify the fibers, wherein the surface roughness of the modified fibers is increased, and meanwhile, the lipophilicity and hydrophobicity of the fibers are increased; then carrying out hybrid braiding on the modified polypropylene fibers and 304 stainless steel metal wire in a certain proportion, so as to form oleophylic and hydrophobic composite fibers; and weaving the composite fibers in a *-shaped weaving manner, so as to obtain the composite coalescence material for water deoiling. The effective contact area between the composite coalescence material and liquid is greatly increased, and liquid can be effectively coalesced and can effectively grow, so that the oil-water separation purpose is achieved.

The present invention provides a dental etching gel composition including phosphoric acid in aqueous solution form, a viscosity-enhancing agent and optionally additives, in which the viscosity-enhancing agent is carboxymethyl cellulose (CMC) with the following properties:(a) having a viscosity of about 100 to about 2000 cps when formulated as an aqueous solution containing 1 wt % of CMC; and(b) having an average degree of substitution of sodium salts in molecular formula of about 21% to about 33%.The dental etching gel composition of the present invention can be used to pre-treat the surface of teeth prior to repair or filling. The etching gel formed by combining phosphoric acid in aqueous solution form with CMC viscosity-enhancing agent having the specific properties stated above is less fluid and thus can be used to etch the specific surface of the tooth so as to obtain a rough surface which improves the close adhesion between teeth and filling resins in the subsequent repairing or filling process.

The invention provides an antibacterial and antiviral non-woven fabric and a preparation method thereof. The antibacterial and antiviral non-woven fabric is formed by compounding first polyester staple fibers loaded by carbon quantum dots and titanium dioxide nanosheets and second polyester staple fibers loaded by silver-loaded and copper-loaded nano zeolite, wherein the mass ratio of the first polyester staple fibers to the second polyester staple fibers is (30-70%): (70-30%). The antibacterial and antiviral non-woven fabric is prepared by compounding and blending the first polyester staple fibers loaded by the carbon quantum dots and the titanium dioxide nanosheets and the second polyester staple fibers loaded by the silver-loaded and copper-loaded nano zeolite; and the advantages of thesilver ion and copper ion inorganic antibacterial and antiviral agent and the titanium dioxide photocatalytic antibacterial and antiviral agent are integrated, the excellent adsorption performance ofthe nano zeolite and the excellent water solubility and optical performance of the carbon quantum dots are combined, and the antibacterial and antiviral performance of the non-woven fabric is synergistically improved.

The invention discloses a method for adsorbing copper ions in waste water by carbon particle prepared from cow dung. The method comprises the following steps: obtaining fourth carbonization particles from a first step to a fourth step; regulating acidity and alkalinity of copper-containing waste water to 8 in a fifth step, adding 50 g of poly-p-tert-butylphenol disulphide, ferrous sulfide and sodium hydrogen sulfate according to the mass rate of 1:2:4 into 1 litre of copper-containing waste water, stirring for one hour, regulating the acidity and alkalinity of the copper-containing waste water to 6.5, adding 50 g of a mixture of fatty alcohol-polyoxyethylene ether sodium sulfate and sodium hypochlorite according to the mass rate of 1:4 into 1 litre of copper-containing waste water, stirring for 2 hours and filtering, regulating the acidity and alkalinity of the copper-containing waste water to 4-6, and adding 25 g of the fourth carbonization particles into 1 litre of treated copper-containing waste water to stir for 8 hours at stirring speed of 120 turns / minute.

The invention discloses a preparation method of modified montmorillonoid and modified montmorillonoid prepared by virtue of same as well as a modified montmorillonoid composite material. The modifiedmontmorillonoid is prepared by culturing montmorillonoid and microorganisms in a microorganism culture medium, separating solid from liquid, and finally drying the montmorillonoid. The montmorillonoidis expanded in a microorganism culture solution, the microorganisms, metabolites of the microorganisms (extracellular polymeric substances) and metal ions among the montmorillonoid layers react withone another, the distance among the montmorillonoid layers is increased, the montmorillonoid layers are even separated from one another, and the microorganisms and the metabolites form a compact organic membrane on the surface of a nanometer layer, so that the surface lipophilicity can be improved; and in addition, after the microorganisms are immobilized on the surface of the montmorillonoid, themicroorganisms react with cations, so that dense pores are formed on the surface and inside the montmorillonoid, the surface roughness can be improved, the porosity and the specific surface area canbe increased, and the activity of the montmorillonoid can be improved.

The invention discloses a rubber cable material easy to process and high in wear resistance. The rubber cable material is prepared from the following raw materials in parts by weight: 70-90 parts of ethylene propylene terpolymer, 3-5 parts of surface modified carbon fibers, 0.5-1.5 parts of a silane coupling agent, 4-5 parts of zinc oxide, 3-4 parts of stearate, 12-16 parts of a plasticizer, 5-8 parts of white carbon black, 1-1.5 parts of a vulcanizing agent and 0.5-1 part of an anti-aging agent. The cable material has excellent wear resistance, processability, aging resistance and flame retardance, the raw materials are easy to obtain, the cost is low, meanwhile, the preparation process is simple, operation is convenient, a product has extremely high stability through accurate control over conditions in rubber plastication and mixing, and the cable material is suitable for large-scale and industrial production of cable material enterprises.

The invention relates to a preparation process of a moisture absorption and sweat releasing fabric, and belongs to the technical field of fabric preparation processes. The preparation process specifically comprises the following process steps: S1, spinning, namely, spinning a fiber A into a first yarn, and spinning a fiber B into a second yarn; S2, weaving, namely, by taking the first yarn obtained in the step S1 as a raw material of inner-layer cloth and the second yarn obtained in the step S1 as a raw material of outer-layer cloth, carrying out weaving to obtain double-layer gray fabric; andS3, dyeing and finishing, specifically comprising alkali deweighting, dyeing, soaping and shaping, so that the finished product fabric is obtained, wherein the fiber A is a hydrophilic fiber, and thefiber B is a hydrophobic fiber. The moisture absorption and sweat releasing fabric has the effect of being higher in moisture absorption and sweat releasing capacity.

The invention discloses a dyeing and finishing process of a black polyester-cotton elastic fabric, and belongs to the technical field of fabric dyeing and finishing. The dyeing and finishing process comprises the following steps of padding the black polyester-cotton elastic fabric in a treating fluid at normal temperature, then immersing the black polyester-cotton elastic fabric in an enzyme treating fluid, pre-setting the thermally washed and dried fabric, and then carrying out reduction cleaning, cotton dyeing and soaping and fixation: putting dyed polyester and cotton into a fixation jar, adding 2 g / L of a soaping agent and 2 g / L of a dedusting agent, performing continuous soaping twice at 98 DEG C for 20 minutes, performing cleaning, adding 3 g / L of a formaldehyde-free fixing agent, performing fixing for 20 minutes at the temperature of 40 DEG C, and taking out the fabric from the jar; and performing final setting: performing heat setting on the elastic fabric subjected to soaping and fixing in a heat setting machine at 120-130 DEG C, wherein the cloth feeding speed ranges from 25 m / min to 30 m / min, and the set fabric width is 2-3 cm greater than the finished fabric width. The process is good in fixation and relatively deep in dyeing, and meets market requirements.

The invention discloses a method for preparing a superfine acrylic fiber modified by porous collagen, and the method comprises the following steps of: dissolving polyacrylonitrile into a solvent, adding polyvinylpyrrolidone, uniformly stirring them to prepare fiber polymer solution; at 40 degrees centigrade, adding collagen solution into the fiber polymer solution, magnetically stirring to an uniform state and standing, and finally preparing into collagen-modified fiber polymer solution; adding SiO2 nano-particles into the collagen-modified fiber polymer solution, magnetically stirring to the uniform state as spinneret solution; injecting the spinneret solution into an ejector, spinning under the additional electric field, depositing it into a collecting unit by controlling spinning time and moving a receiving screen, and finally calcining; soaking the acrylic fiber containing the SiO2 nano-particles with HF (Hydrogen Fluoride) solution, slowly stirring, cleaning and drying to prepare the superfine acrylic fabric modified by porous collagen. Through the preparation method, fabric is improved in dyeing property, the acrylic fiber has the soft and smooth hand feel and the silk-like effect.

The invention relates to a triangular steel structure artificial reef. The triangular steel structure artificial reef comprises a steel structure reef supporting frame and attachment plates, wherein the steel structure reef supporting frame is in detachable fabricated connection with the attachment plates; the steel structure reef supporting frame comprises an outer triangular reef bracket, innertriangular reef brackets and fixing brackets, and the outer triangular reef bracket, the inner triangular reef brackets and the fixing brackets are all made of seawater corrosion resistant steel; thefixing brackets parallel to the axis is arranged in three axial planes of the outer triangular reef bracket, a plurality of the inner triangular reef brackets adopt the fixing brackets on the outer triangular reef bracket as three vertices to be welded on the fixing brackets, and the planes of the inner triangular reef brackets are perpendicular to the central axis of the outer triangular reef bracket; and the attachment plates are cement corrugated plates with rough surfaces, and the cement corrugated plates are in detachable fabricated connection with the steel structure reef supporting frame, and are assembled between the inner triangular reef brackets and the fixing brackets to assemble the hollow artificial reef with holes.

The invention relates to an assembly type artificial fish reef with a triangular steel structure. The assembly type artificial fish reef with the triangular steel structure comprises a structure assembly and a function assembly, the structure assembly and the function assembly being detachably assembled and connected, wherein the structure assembly comprises a reef body supporting frame, a water-permeable support and a bottom supporting plate, and is made of seawater corrosion resistant steel; the cross section of the reef body supporting frame is a non-right triangle, a fixing support is installed on the reef body supporting frame and is parallel to triangular edges of the reef body supporting frame, the water-permeable support is arranged at the bottom of the reef body supporting frame,the bottom of the reef body supporting frame and the water-permeable support are reinforced through a bottom fixing support, and the bottom supporting plate is welded to the other end of the water-permeable support and makes contact with the seabed; and the functional assembly comprises cement corrugated plates with rough surfaces, the cement corrugated plates are detachably assembled and connected with the reef body supporting frame and the fixing support, and the cement corrugated plates are assembled between the reef body supporting frame and the fixing support at intervals to form the multi-hole artificial fish reef.

The invention relates to an assembly type artificial fish reef with quadrilateral steel structure. The artificial fish reef comprises a structure assembly and a function assembly, wherein the structure assembly and the function assembly are detachably connected in an assembled mode; the structure assembly comprises reef body supporting frames, a water permeable support and a bottom supporting plate; the reef body supporting frames, the water permeable support and the bottom supporting plate are made of seawater corrosion resistant steel; the reef body supporting frames are of the three-dimensional frame structure with inner and outer double-quadrangles, a hook is arranged at the top, and the water permeable support is arranged at the bottom; the functional assembly comprises cement corrugated plates with rough surfaces; the cement corrugated plates are assembled between the reef body supporting frames at intervals to form a multi-layer and multi-hole artificial fish reef; and the included angle between the cement corrugated plates assembled between the reef body supporting frames and a horizontal plane ranges from 20 degrees to 45 degrees. According to the artificial fish reef, environment-friendly and low-cost materials are selected, the assembled artificial fish reef that is light in structure and convenient to assemble is prepared, and the artificial fish reef is convenientto produce and use due to standardized component production and assembly.

The invention relates to a hexagonal steel structure assembly type artificial fish reef. The hexagonal steel structure assembly type artificial fish reef comprises a structure assembly and a functionassembly, wherein the structure assembly and the function assembly are detachably connected in an assembled mode; the structure assembly comprises a reef body supporting frame, a water permeable support and a bottom supporting plate and is made of seawater corrosion resistant steel; and the reef body supporting frame is of an inner and outer double regular hexagonal three-dimensional frame structure and comprises a plurality of outer hexagonal horizontal supports and inner hexagonal horizontal supports which are arranged in parallel, and vertical supporting frames vertically connected with theouter hexagonal horizontal supports and the inner hexagonal horizontal supports. The reef body supporting frame is provided with a hook at the top and the water permeable support at the bottom, and the bottom supporting plate is welded to the other end of the water permeable support, located on the same horizontal plane and in contact with the seabed. The functional assembly comprises cement corrugated plates with rough surfaces, and the cement corrugated plates are assembled between the reef body supporting frames at intervals to form the multi-layer and multi-hole artificial fish reef.

The invention discloses a highly adhesive thermoplastic polyimide resin, a polyimide film containing the same, and a flexible copper clad plate. The highly adhesive thermoplastic polyimide resin is prepared from the following raw materials in parts by weight: 0.1 to 7.5 parts of inorganic particle, 0.1 to 2.5 parts of hydroxyl apatite and nano silica, 21 to 79 parts of diamine, 21 to 63 parts of aromatic diamine and aliphatic diamine, 26 to 118 parts of dianhydride, and 325 to 450 parts of aprotic polar solvent. A TPI film prepared from the polyimide resin, a polyimide film, and a copper foilare laminated to form a flexible copper clad plate. Even if the thickness of the TPI layer is 2.0 [mu]m, the peeling strength between the TPI film and the copper foil is not less than 1.0 N / mm; the TPI and PI can be bent for more than 50 times; at the same time, the surface electrostatic adsorption, CTE, and water absorbing performance of obtained TPI film are reduced; and the mechanical properties, heatproof performance, flame retardant property, and insulation property of obtained TPI film are enhanced to a certain degree.