1205results about "Polyether coatings" patented technology

The invention discloses reflection-heat insulation dual-functional aluminum oxide ceramic and a preparation method and application thereof.The method comprises the steps that after surface silanization treatment is conducted on nanoscale hollow oxide filler, surface-modified nanoscale hollow oxide filler is prepared; and then adding the surface-modified nanoscale hollow oxide filler into a high-molecular polymer and a mixed polar solvent to obtain the thermal insulation coating. The method comprises the following steps: coating the surface of aluminum oxide ceramic with a heat insulation coating to form a primary coating, and carrying out gradient heating curing to obtain aluminum oxide ceramic with a functionalized heat insulation coating; and coating the surface of the thermal insulation coating functionalized aluminum oxide ceramic with an infrared reflection coating, and carrying out annealing treatment in a nitrogen atmosphere to prepare the reflection-thermal insulation dual-functionalized aluminum oxide ceramic. By constructing a double-layer composite structure, enhancing interface thermal resistance through chemical bonding, directionally distributing the nanofiller and designing a low-radiation layer structure, heat conduction and radiation heat transfer of the aluminum oxide ceramic-based material are synergistically reduced, and the high-temperature heat insulation performance of the aluminum oxide ceramic-based material is improved.

The invention relates to the technical field of coatings, and discloses a wear-resistant waterborne polyurethane finish paint and a preparation method thereof. The wear-resistant waterborne polyurethane finish paint comprises a component A and a component B in a mass ratio of (4-7): 1, the component A is prepared from the following components in parts by mass: 50 to 60 parts of waterborne polyurethane, 10 to 15 parts of hyperbranched polysiloxane, 2 to 3 parts of polyoxyethylene fatty acid, 0.8 to 1.2 parts of a de-foaming agent, 6 to 8 parts of color paste and 10 to 15 parts of water; and the component B comprises an isocyanate curing agent. The wear-resistant waterborne polyurethane finish paint prepared in the invention has excellent adhesion strength and wear resistance.

The invention belongs to the technical field of polymer composite materials, and particularly relates to an oil-resistant interior material. The material comprises a porous base material layer, a fluorine-containing polymer and organic silicon resin blended oil-resistant functional layer and a micro-nano structure layer with a periodic micro-bulge array, surface modified nanoparticles are distributed in the functional layer in a gradient manner, and the micro-bulge surface is covered with a perfluoropolyether / fluorinated silicon dioxide composite coating; through a synergistic effect of a low-surface-energy oleophobic interface formed through chemical bonding and curing and a micro-structure capillary lifting effect, anti-permeation barrier of high-viscosity grease is realized, and meanwhile, mechanical wear resistance and thermal stability are improved by virtue of a nano-particle enhanced cross-linked network; and continuous imprinting and an ultraviolet-thermal dual-curing process are combined to achieve high-efficiency manufacturing with zero solvent residue, and finally the interior material with long-acting oil resistance, high environmental tolerance and industrial mass production feasibility is obtained.

The invention discloses a high-temperature-resistant, bending-resistant and high-flexibility polyimide film for flexible display and a preparation method of the high-temperature-resistant, bending-resistant and high-flexibility polyimide film. According to the polyimide film, by introducing the nano silicon dioxide particles and constructing the porous structure design, the problems that a traditional polyimide film is insufficient in stability in a high-temperature environment, cracks are likely to be generated after bending, and the flexibility is poor are effectively solved. The polyimide film disclosed by the invention is prepared by adopting a diamine monomer and a dianhydride monomer as main raw materials, adding nano silicon dioxide particles, and carrying out solution polymerization, gelation, pore regulation and control and thermal imidization processes. The obtained polyimide film has a micron-sized porous structure, keeps stable at a high temperature of 400 DEG C, does not generate cracks after being bent for 100,000 times, has tensile strength of more than or equal to 150MPa, elongation at break of more than or equal to 25% and light transmittance of more than or equal to 85%, and is suitable for a substrate material of a flexible display device.

The invention relates to the technical field of preparation of medical supplies, in particular to a surgical membrane and a preparation process. During specific use, firstly, a polyurethane base membrane is selected and subjected to plasma treatment; spraying a nano SiO2 dispersion liquid containing a photoinitiator on the surface of the treated polyurethane base film, and then performing ultraviolet patterning irradiation to form a micro-bulge structure to obtain a base material layer; projecting the colloidal fluid to a temperature gradient mask through a digital micromirror device, so that the colloidal fluid is subjected to regional thermal polymerization on the substrate layer to form an intelligent adhesive layer with viscosity gradient; by adopting an aerosol jet printing technology, super absorbent fibers and polyvinyl alcohol-borax dynamic crosslinking hydrogel are co-deposited to form a drainage layer, so that the technical problems that a surgical membrane prepared by a surgical membrane preparation mode in the prior art is inflexible in adhesion and poor in surface structure performance, and a preparation process is difficult to accurately control are solved.

The invention discloses a polyetherketoneketone high-temperature-resistant wear-resistant non-stick coating and a preparation method thereof. The coating is prepared from the following components in parts by mass: 13 to 30 parts of a resin matrix group (containing 12 to 25 parts of titanium modified polyether ketone ketone resin, 1 to 5 parts of fluorine-free viscous resin and 0.65 to 6 parts of aluminum oxide), 0.5 to 3 parts of a nano reinforced group (containing 0.5 to 3 parts of KH-550 modified nano titanium dioxide, 0.025 to 0.6 part of cerium dioxide and 0.5 to 3 parts of boron nitride) and 62 to 71 parts of an auxiliary agent group. The preparation method comprises the following steps: 1) taking diphenyl ether, paraphthaloyl chloride and isophthaloyl chloride as monomers, and synthesizing titanium modified polyether ketone ketone resins with different viscosities through segmented polymerization (1.5-2.0 hours or 3.0-4.0 hours); 2) respectively preparing a smooth bottom layer water dispersion slurry and a wrinkled surface layer water dispersion slurry; and (3) forming a compact bottom layer and a micro-wrinkle surface layer on the base material by adopting a layered spraying and stepped sintering process (280-320 DEG C, 10-20 minutes). The whole system of the coating is fluorine-free and has temperature resistance gt; the coating has the characteristics of high temperature resistance (350DEG C), wear resistance (Taber wear rate of 3-5mg / 1000r), non-sticking (contact angle gt, 100 DEG C) and heavy corrosion resistance, and is suitable for cooking utensils and chemical equipment.

The invention relates to the technical field of polyether-ether-ketone composite materials, in particular to a conjugated polythiophene-polyether-ether-ketone-based high-antibacterial coating and a preparation method thereof.The preparation method comprises the steps that hydroxyl modified boron nitride with photocatalytic capacity and aminated PEEK are subjected to melt blending to generate chemical bonding, and a BN-OH / PEEK-NH2 composite fine powder material is formed; then carrying out oxidative polymerization on the BN-OH / PEEK-NH2 composite fine powder and a thiophene monomer under the action of an oxidizing agent, carrying out in-situ synthesis to obtain a polythiophene / BN-OH / PEEK-NH2 conjugated composite material, and subsequently spraying the polythiophene / BN-OH / PEEK-NH2 conjugated composite material to the surface of a base material to prepare a composite coating with excellent antibacterial property, high thermal stability and low friction coefficient; the antibacterial rate of the coating on escherichia coli and staphylococcus aureus under illumination reaches 90% or above, and the coating is suitable for the medical antibacterial field.

The invention discloses a metal temporary protective film and a preparation method and application thereof, and the metal temporary protective film comprises the following components by weight: 20-90 parts of hydrophilic acrylate resin; 5 to 50 parts of a hydrophilic UV monomer; 0-50 parts of a filler; 0-10 parts of a thixotropic agent; 1 to 10 parts of a photoinitiator; 0.01-1 part of a dispersant; 0.01 to 1 part of a defoaming agent; 0-20 parts of an adhesion promoter; 0.01 to 5 parts of a polymerization inhibitor; and 0-20 parts of starch. The metal temporary protective film has the characteristics of high binding force and easy film stripping after being cured, so that the metal temporary protective film has the effects of inhibiting wiredrawing and protecting the surface during metal machining, can be soaked in tap water for stripping, and can realize rapid film stripping without being soaked in alkaline water, acid water and an organic solvent.

The invention relates to a self-repairing hydrogen barrier composite coating for a hydrogen storage or transportation device as well as a preparation method and application of the self-repairing hydrogen barrier composite coating, and belongs to the technical field of hydrogen energy storage and transportation materials. The coating is of a double-layer structure and is composed of a bottom coating and a humidity response microcapsule self-repairing barrier layer. The humidity response microcapsule is composed of a capsule core containing a polyurethane prepolymer and a hybrid capsule shell formed by polyurethane and siloxane, and has good hydrogen barrier performance and environmental response characteristics. In a certain humidity environment, the microcapsule is stimulated to release the capsule core material, and in-situ self-repairing is achieved. The problem that a traditional hydrogen-resistant coating is short of repairing capacity is solved, and the hydrogen-resistant coating has a wide application prospect in the aspect of improving the safety of a hydrogen conveying and storage system.

The invention relates to the technical field of semiconductor processing, in particular to a coating liquid for protecting a wafer, a preparation method of the coating liquid and an organic protective film. 20 to 30 wt% of a polyvinyl alcohol compound; and 0.5-5 wt% of a polyethylene glycol compound. The organic protective film is prepared from the coating liquid. The organic protective film prepared by adopting the coating liquid can be tightly attached to the surface of a wafer, has no defects such as bubbles and wrinkles, can effectively isolate pollutants and mechanical damage in the processing process, has good dimensional stability in the processing process, is matched with the characteristics such as the thermal expansion coefficient of the wafer, and has a good application prospect. Stress generated between the protection film and the wafer due to size change is avoided, and the protection effect and subsequent tearing of the organic protection film are not affected.

A method of making a silver-silicalite coating on a surface of a stainless-steel substrate is provided. The method includes mixing metakaolin with an aqueous solution of NaOH to form a first mixture. The method further includes mixing silica gel and silver nitrate with the first mixture to form a second mixture. Furthermore, the method includes mixing Zeolites Socony Mobil-5 (ZSM-5) with the second mixture to form a third mixture. The method further includes hydrothermally treating the stainless-steel substrate with the third mixture to form the silver-silicalite coating on the surface of the stainless-steel substrate. The hydrothermal treatment is carried out in the absence of an organic template. The stainless-steel substrate coated with the silver-silicalite coating, prepared by the method of the present disclosure, has lower corrosion in comparison to the same stainless-steel substrate without the silver-silicalite coating.

According to the preparation method of the high-temperature-resistant durable super-hydrophobic powder coating, integrated powder coating particles are prepared by mixing through a tabletting-crushing-sieving technology, and finally, one end of a solid nano-material in the integrated powder coating particles is embedded into a bottom layer, and the other end of the solid nano-material protrudes out of the surface of the coating, so that a nano-fiber bridging interface strengthening structure is formed. According to the invention, the low surface energy material, the solid nano material and the thermoplastic film-forming resin are effectively combined together to construct firm and stable integrated powder coating particles, so that the overall performance is synergistically enhanced, and the protection capability of a micron-scale structure to a nano-scale structure is greatly improved; the solvent-free durable super-hydrophobic powder coating is directly prepared through electrostatic spraying, so that the technological process is simplified; the solid, solvent-free and environment-friendly super-hydrophobic powder coating is prepared, has excellent high-temperature resistance and super-hydrophobic performance, and has potential advantages in the aspect of anti-corrosion and anti-drag application of a heat distribution pipeline.

The present invention relates to a cooking element (1) comprising a metal support (2) that comprises an inner face (21) suitable for receiving food and an outer face (25), wherein the inner face (21) is coated with a coating (5) that consists, successively from the support (2), of an underlayer (3) and a surface coating (4), characterised in that the underlayer (3) takes the form of a discontinuous layer, is formed from one or more materials selected from the group consisting of Al2O3-TiO2, Al2O3-SiO2, Al2O3-ZrO2, Al2O3 and mixtures thereof, and has open pores across all or some of the thickness of the underlayer, wherein the open pores account for 20% to 70% by volume of the volume of the underlayer (3), and wherein the open pores are filled with the surface coating (4) to between 40% and 100% by volume, and in that the surface coating (4) penetrates into the thickness of the underlayer (3) to a depth of at least 30% relative to the thickness of the underlayer (3).

The invention discloses a metal non-stick coating and a preparation method. The coating comprises 20-30 parts of low-melting-point glass powder, 10-20 parts of a two-dimensional material, 10-20 parts of a spherical material, 10-20 parts of a rod-like material, 5-10 parts of a high-temperature pigment and 20-30 parts of a water-based carrier. The metal non-stick coating is sintered on the base material at low temperature, and the low-melting-point glass powder is used as a cladding sealing film forming substance and is cladded on the metal base material by adopting a sintering process, so that the hardness of the coating is higher than that of metal, the coating is not afraid of being scratched by metal kitchenware and hard food materials, and the metal non-stick coating is not prone to being scratched by the metal kitchenware and the hard food materials during conventional operations such as decocting and stir-frying. The coating is not prone to falling off or oxygenolysis, the concave-convex lotus leaf structure with the microscopic surface is formed through cooperation of the two-dimensional material, the spherical material, the rod-shaped material, the high-temperature pigment, the water-based carrier and other materials, and when food is cooked, the concave-convex lotus leaf structure can reduce contact between the food and the bottom of the pan, the Leidenfrost effect is formed, and the food is prevented from sticking to the pan.

The invention belongs to the field of batteries, and particularly relates to a solid-state polymer electrolyte composite membrane, a preparation method thereof and a solid-state battery. The solid polymer electrolyte composite membrane comprises an MOF functional layer, an anti-reduction coating and an anti-oxidation coating, wherein the anti-reduction coating and the anti-oxidation coating are arranged on the two sides of the MOF functional layer respectively; the MOF functional layer comprises an intermediate layer base material formed by an organic polymer, and an inorganic solid electrolyte and an MOF-based ionic conductor MOF-ILE which are dispersed in the intermediate layer base material; the MOF-based ionic conductor MOF-ILE comprises an MOF material, an ionic liquid and a lithium salt. The electrolyte membrane can meet the multifunctional requirements of all-solid-state batteries, including high ionic conductivity of the electrolyte membrane, good electrode-solid electrolyte membrane interface compatibility, high electrochemical window, excellent mechanical strength and electrochemical stability, so that the electrical performance of the all-solid-state batteries is remarkably improved.

The invention discloses a packaging method of a perovskite solar cell and the perovskite solar cell. The packaging method of the perovskite solar cell comprises the following steps of coating the surface of a back electrode layer with insulating slurry to form an insulating barrier layer, performing ultrasonic cleaning and surface treatment on back plate glass, coating a to-be-bonded surface of the back plate glass with an adhesive, bonding the back plate glass and the insulating barrier layer, and performing lamination and curing treatment to obtain the perovskite solar cell. And packaging is completed. The perovskite solar cell can be packaged at the temperature lower than 100 DEG C, and the problems that in the prior art, due to the fact that a packaging adhesive film needs to be subjected to hot-pressing packaging at the high temperature, the photoelectric conversion efficiency is reduced, and the internal structure and connection of the cell are prone to damage are solved.

This reactive silicon group-containing polyoxyalkylene derivative in which one or both terminals of a polyoxyalkylene chain are blocked with a group represented by structural formula (1) has good curability even if an amine-based compound is used as a curing catalyst, and gives a cured product having excellent yellowing resistance and heat resistance. (In the formula, R1 and R2 each independently represent a hydrogen atom, a C1-10 aliphatic saturated hydrocarbon group or a C6-10 aryl group, each R3 independently represents a C1-10 aliphatic saturated hydrocarbon group or a C6-10 aryl group, and n is an integer of 2-12. The wavy line represents a bond.)

The invention relates to the technical field of high-end packaging and printing, and discloses a base material back coating and a preparation method thereof, and the base material back coating comprises the following components in parts by weight: 55-70 parts of mixed matrix resin formed by polar modified epoxy acrylate and perfluoropolyether acrylate according to a weight ratio of 4 / 1-9 / 1, according to the invention, self-stratification power generated by viscosity reduction in a heat leveling stage is utilized to drive the components to migrate directionally and construct a gradient interpenetrating network structure, so that the self-stratification effect is improved, and the self-stratification effect is improved; the coating is subjected to continuous chemical transition from the bottom anchoring layer to the surface shielding layer, interface stress concentration generated by physical layering is eliminated, and the interface bonding stability is improved on the premise that the protection strength of the ultrathin coating is guaranteed.

The invention discloses a deicing material with a low-interface-toughness coating coupled with a mixed phase change material and a preparation method of the deicing material, and belongs to the technical field of anti-icing and deicing materials. The preparation method comprises the following steps: spraying a product solution obtained by grafting micron-sized hydrophilic silicon dioxide, nano-sized aluminum oxide and a silane coupling agent on the surface of a substrate, drying and curing to obtain a micro-nano porous structure bottom layer, and uniformly coating the micro-nano porous structure bottom layer with a Graphene-coated PEG400 mixed phase change material to form a phase change heating / photo-thermal layer. And finally, spraying a low-interface toughness coating prepared by reacting polydimethylsiloxane with a cross-linking agent and a polymerization increasing agent on the phase change heating / photo-thermal layer to obtain the deicing material. According to the invention, the weak binding force of the low-interface toughness coating is utilized to greatly reduce the adhesive force between the ice layer and the substrate, and the heating effect of the phase change heating / photo-thermal layer is utilized to realize low-energy-consumption intelligent deicing, so that the safety and economical efficiency of equipment are remarkably improved.

Organotin compositions having the formula RSnL3 and corresponding synthetic methods are described. R includes aromatic, cyclic and / or halogenated ether moieties, or polyethers, and L includes hydrolysable groups. The organotin compositions may be formed as radiation-patternable coatings on substrates. The coatings may have an average thickness from about 1 nm to about 75 nm and have the formula RSnOn(OH)3-2n, forming an oxo-hydroxo network, where R is a hydrocarbyl ether group with 1 to 30 carbon atoms and 0<n<3 / 2, wherein regions of the coating are soluble in 2-heptanone in a puddle development step following a bake at 150° C. for 120 seconds. The coatings may be radiation-patternable using UV, EUV or ion beam radiation, and corresponding methods are described.

The invention discloses a knurled bolt with corrosion resistance and a preparation method and application thereof, and belongs to the technical field of bolt machining, a rod blank comprises the following chemical components in percentage by weight: 0.33 to 0.37 percent of C, 12.3 to 12.7 percent of Cr, 2.1 to 2.3 percent of Ni, 1.15 to 1.25 percent of Mo, 0.80 to 0.95 percent of Mn, 0.18 to 0.22 percent of V, 0.15 to 0.25 percent of Si, 0.05 to 0.07 percent of N, 0.0015 to 0.0025 percent of B, less than or equal to 0.03 percent of Al, less than or equal to 0.02 percent of Ti, less than or equal to 0.002 percent of S, less than or equal to 0.012 percent of P and the balance of Fe and other inevitable elements; and the rod blank is subjected to spheroidizing annealing, acid pickling phosphating, wire drawing, cold heading, knurling, thread rolling, heat treatment and Dacromet surface treatment, and then the knurled bolt with the corrosion resistance is obtained. By means of the mode, the excellent mechanical property is achieved under the condition that the corrosion resistance is guaranteed.

The invention provides an anti-corrosion laser cutting protection liquid as well as a preparation method and application thereof. The anti-corrosion laser cutting protection liquid comprises the following components in parts by weight: 10-20 parts of water-soluble resin; 0.1 to 0.5 part of an auxiliary agent; 10-25 parts of an organic solvent; 0.1 to 0.5 part of a corrosion inhibitor; 0.1 to 0.5 part of a pH regulator; 65 to 80 parts of ultrapure water; the corrosion inhibitor is a mixture of mahogany petroleum sulfonate and fluorine-containing phosphate, and the mass ratio of mahogany petroleum sulfonate to fluorine-containing phosphate is (2: 3)-(2: 8). The invention further discloses a preparation method of the corrosion-resistant laser cutting protection liquid and application of the corrosion-resistant laser cutting protection liquid in the field of wafer cutting. The corrosion-resistant laser cutting protection liquid can effectively prevent a metal layer from being corroded, so that the cutting efficiency and quality of a silicon wafer are improved.

According to a first aspect of the present invention, there is provided an antifouling member, in which a surface of one face is provided with irregularities on an order of nanometers, the antifouling member including an antifouling layer which is provided on recesses of the irregularities. In addition, there are also provided a display in which at least a part of a display portion is covered with the antifouling member, a touch panel in which at least a part of a touch portion is covered with the antifouling member, and a sensor in which at least a partial surface is covered with the antifouling member.

The invention belongs to the technical field of fluorosilicone polymer materials and surface treatment, and particularly relates to a silane compound containing a straight-chain perfluoropolyether group and a preparation method of the silane compound, the structural formula of the silane compound containing the straight-chain perfluoropolyether group is Rf-CH2-OC (O)-X1-CONQaT2-a (1), and the number-average molecular weight is 500-10000; in the formula, Rf is F (CF2) m-(OC4F8) p-(OC3F6) q-(OC2F4) r-(OCF2) sO-C (Z) F (CF2) n-, p, q, r and s are respectively independent and are integers between 0 and 200, the sum of p, q, r and s is not less than 1, the existence sequence and number of each repeating unit with p, q, r and s and included by brackets are arbitrary in the formula, m and n are integers between 0 and 30, and Z is F or CF3; a is 0 or 1, X1 is a divalent organic group, Q is hydrogen, phenyl or C1-22 alkyl, T is-Y-SiR1jR2-j, and Y is a divalent organic group. According to the silane compound containing the straight-chain perfluoropolyether group and the preparation method of the silane compound containing the straight-chain perfluoropolyether group, an article coated with the silane compound containing the straight-chain perfluoropolyether group has good hydrophobicity, oleophobicity, smoothness, steel wool abrasion resistance and eraser abrasion resistance.

The invention belongs to the technical field of anti-rust coatings, and provides an anti-rust coating composition as well as a preparation method and application thereof. The preparation method comprises the following steps: firstly, preparing a BiVO4 composite material with high thermal stability and an oxygen vacancy structure by adopting a hydrothermal method so as to enhance the thermal stress resistance and mechanical strength of the BiVO4 composite material; secondly, a phosphonitrile chloride polymer compound is prepared through an absolute ethyl alcohol dispersion polymerization method, so that the chemical corrosion resistance and the thermal stability of the coating are improved; then, phosphate reinforced glass ceramic is prepared, and the mechanical performance and the high temperature resistance of the coating are improved; finally, the functional materials are mixed with the modified resin and the phosphate coupling agent, the mixture is evenly dispersed through a three-roller grinding machine, the anti-corrosion coating composition is prepared, the coating shows excellent thermal stress resistance under the high-temperature condition, cracking, falling and corrosion of the coating can be effectively inhibited, the service life of the high-temperature transportation pipeline is prolonged, and the anti-corrosion performance of the high-temperature transportation pipeline is improved. The method is suitable for the high-temperature pipeline field.

This fluoropolyether-based curable composition contains(A) a perfluoropolyether compound having two or more alkenyl groups per molecule,(B) a fluorine-containing organo hydrogen silane compound having two or more hydrosilyl groups having a specific structure,(C) a platinum group metal-based catalyst, and(D) a specific amount of at least one filler selected from organic resin powders and carbon black powders.Such a fluoropolyether-based curable composition can provide a cured product that has endurance against fluoric acid and electrolytic solutions for lithium ion batteries, has fine mechanical properties, and has excellent releasability because of not having uncured portions resulting from low compatibility between structural ingredients.

The invention provides an organic silicon modified perfluoropolyether UV anti-fingerprint agent and a preparation method thereof. The method comprises the following steps: adding organic silicon modified perfluoropolyether into a fluorocarbon solvent, and adding an alcohol compound containing a propenyl terminal group and a catalyst for reaction to obtain a hydroxyl-containing organic silicon modified perfluoropolyether solution; the preparation method comprises the following steps: adding an acid-binding agent into a hydroxyl-containing organosilicon modified perfluoropolyether solution, and slowly dropwise adding acryloyloxy chloride for reaction to obtain a crude product; and adding an organic alcohol compound into the crude product for treatment, carrying out liquid separation and standing, taking out subnatant, and carrying out rotary evaporation to obtain the organic silicon modified perfluoropolyether UV anti-fingerprint agent. According to the method disclosed by the invention, the problem of compatibility of the perfluoropolyether-based anti-fingerprint agent and the UV coating is solved under the condition of reducing the fluorocarbon solvent through chemical synthesis. In the curing process, the perfluoropolyether-based anti-fingerprint agent part is quickly migrated to the surface of the UV coating, and in-situ curing and crosslinking are achieved.

The invention provides a polyether-ether-ketone composite membrane as well as a preparation method and application thereof, and belongs to the field of composite materials. The invention provides a polyether-ether-ketone composite membrane. The polyether-ether-ketone composite membrane comprises a coating, a first aramid fiber composite membrane and a second aramid fiber composite membrane, the coating is arranged on the surface of the first aramid fiber composite film; the first aramid fiber composite membrane comprises first polyether-ether-ketone and first deprotonated aramid fiber dispersed in the first polyether-ether-ketone; the second aramid fiber composite film comprises second polyether-ether-ketone, and graphene, multi-walled carbon nanotubes and second deprotonated aramid fibers which are dispersed in the second polyether-ether-ketone; the coating comprises soluble polyaryletherketone and mica sheets and / or boron nitride wrapped by the soluble polyaryletherketone; the coating is of a porous structure. The polyether-ether-ketone composite film disclosed by the invention has excellent radiation cooling performance, solar heating performance and heat-conducting performance.

The invention discloses a pH / temperature dual-response type quaternary ammonium salt-nano silver-zinc oxide composite antibacterial coating material as well as a preparation method and application thereof, and belongs to the technical field of antibacterial materials. The antibacterial effective life of the coated product is at least up to 5 years. The coating product is preferably a gastrointestinal endoscope, efficient bacteriostasis is achieved under the condition that the light transmittance of the gastrointestinal endoscope is not affected, biocompatibility is good, safety is high, precise controlled release of silver ions is achieved, and biotoxicity caused by sudden release of the silver ions is avoided. The quaternary ammonium salt-nano silver-zinc oxide composite coating material with the pH / temperature dual-response antibacterial effect is finally obtained through the steps of preparing a composite carrier material, loading antibacterial metal elements, constructing a pH / temperature dual-response polymer network and the like in sequence. A high-performance, safe and environment-friendly antibacterial coating system which is rapid in sterilization, precise in controlled release and long-acting in interference resistance is constructed, and an antibacterial solution with high technical adaptability is provided for the fields of medical treatment, food, water treatment and the like.

The invention relates to the technical field of circuit boards, in particular to a low-profile coarsened copper foil for a circuit board and application of the low-profile coarsened copper foil for the circuit board, and the low-profile coarsened copper foil adopts a two-coarsening and one-solidifying treatment process and comprises the following steps: adding indium and cerium elements and hydroxyethyl cellulose with the molecular weight of 80,000-100,000 into coarsening liquid; the components in the silane treatment liquid are limited, and imidazole amide propyl triethoxy silane is used as a coupling agent to react with tetraethyl silicate and modified bisphenol A polyaryletherketone under the catalysis of ammonia water; the imidazole amide propyl triethoxy silane is synthesized by taking imidazole and gamma-isocyanate propyl triethoxy silane as raw materials; the preparation method of the modified bisphenol A type polyaryletherketone comprises the following steps: synthesizing a monomer containing an imide phenoxy hexafluoropropane structure by using 2, 2-bis [4-(4-aminophenoxy benzene)] hexafluoropropane and 4-chlorophthalic anhydride as raw materials, copolymerizing the monomer with bisphenol A and 4, 4 '-difluorobenzophenone, and introducing an imide phenoxy hexafluoropropane group on a main chain structure of the polyaryletherketone.