731results about "Polyether coatings" patented technology

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 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 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 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 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 present invention relates to novel (per)fluoropolyether (PFPE) polymers, to a process for their manufacture and to their use as additives in coating compositions. Specifically, the invention relates to a (per)fluoropolyether polymer [polymer (PP)] comprising a (per)fluoropolyoxyalkylene chain [chain (Rpf)] having two chain ends bonded to opposite sides of said chain (Rpf), wherein: * one of said chain ends comprises at least one, preferably from 1 to 3, group (group [I]) selected from: alkoxysilane [group (Si)] or cross-linkable group, preferably selected from unsaturated moiety [group (U)] and epoxide [group (E)]; and * the other chain end comprises at least one, preferably from 1 to 3, group (group [II]) selected from: optionally substituted piperidine, optionally substituted pyridine or optionally substituted pyrrole.

The invention provides a thermoplastic composite material 3D printing wire rod and a preparation method thereof. The thermoplastic composite material 3D printing wire rod comprises a fiber matrix, and a first resin layer, a second resin layer and a third resin layer which wrap the fiber matrix and are sequentially stacked from inside to outside; wherein the first resin layer is formed after imidization of a water-soluble thermoplastic polyamide acid resin system, the second resin layer is formed after hot melting and shaping of a suspension prepared from semi-crystalline thermoplastic resin powder, and the third resin layer is formed after melting, pultrusion and shaping of a solution prepared from amorphous thermoplastic resin powder and a nano reinforcing material. Through the multi-layer resin structure design, matching of fiber resin and optimization of layers in the printing process are facilitated, the problems of high porosity and low interface bonding in the thermoplastic composite material 3D printing forming process are solved, and rapid and reliable application of the thermoplastic composite material 3D printing technology in the high-end fields such as aerospace is promoted.

The invention provides application of an anti-fog and anti-frost high-light-transmittance coating with self-repairing performance in anti-counterfeiting and an anti-counterfeiting product. The anti-counterfeiting product comprises a solid substrate; the first anti-counterfeiting coating covers at least one part of the surface of the solid substrate and is formed by an anti-fog and anti-frost high-light-transmittance coating with self-repairing performance. The cross-linking is controlled by optimizing the ratio of the amount of substance of hydroxyl in the polymer containing hydroxyl in the main chain or side chain to the amount of substance of the organosilane reagent serving as the cross-linking agent and the polymer containing carboxyl in the main chain or side chain; a cross-linked transparent coating with self-repairing performance, water resistance, long-acting fog resistance, frost resistance and high light transmittance is obtained on a solid substrate by adopting a coating method, and the transparent coating is applied to the anti-counterfeiting field and is directly used as an anti-counterfeiting coating; therefore, the application of the long-acting anti-fog and anti-frost high-light-transmittance coating with the self-repairing performance in the anti-counterfeiting field is developed, and the coating is particularly suitable for anti-counterfeiting of exit-entry certificates with transparent windows.

The present invention relates to coating compositions that can be applied to the surface of a substrate to form a durable, non-stick coating. The coating compositions can include a basecoat composition and a topcoat composition for forming a basecoat and a topcoat applied over the basecoat. The basecoat can include one of an organic polymer, a sol-gel composition, and a silicone resin. The basecoat composition and the resulting basecoat can further include reinforcing particles. The topcoat can include a siloxane matrix formed from one of a hydrosilylation reaction, a dehydrocoupling reaction, and a polycondensation reaction. The basecoat and the topcoat can each be substantially free of a fluoropolymer component.

The invention discloses a silane modified polymer waterproof coating as well as a preparation method and a use method thereof, relates to the technical field of waterproof coatings, and aims to solve the problems that the waterproof coating is slow in film forming and easy to sag. The high-temperature-resistant plastic comprises the following raw materials in parts by weight: 25-35 parts of resin, 1-3 parts of a coupling agent, 10-15 parts of a plasticizer, 1-3 parts of a water removal agent, 0.5-1 part of a dispersing agent, 35-40 parts of filler, 1-2 parts of a stabilizer, 0.1-0.5 part of a defoaming agent and 1-3 parts of an aging agent. The waterproof coating prepared according to the scheme meets performance indexes required by part design in the general waterproof specification GB55030-2022 of building and municipal engineering, the film forming time is short, the required thickness can be achieved through one-time film coating, sagging is avoided, resources are saved, and the service life of a waterproof material is prolonged.

The utility model provides a compressor rear end cover coating and a compressor rear end cover, and belongs to the technical field of compressors. The compressor rear end cover coating comprises a bottom layer bonding layer and an insulating layer, the bottom layer bonding layer is attached to a compressor rear end cover, the insulating layer is arranged on the bottom layer bonding layer, and the insulating layer comprises PEEK paint. The coating is good in adhesive force and excellent in insulating property, and can meet the use requirements of the compressor.

The invention relates to the field of building waterproofing, and discloses a plasticizer and a preparation method thereof, a composition for a polyether waterproof coating, the polyether waterproof coating and a preparation method of the polyether waterproof coating. The method for preparing the modified polyether plasticizer comprises the following steps: (1) in a protective atmosphere, in the presence of a base catalyst, stirring and mixing alpha, omega-dihydroxy polydimethylsiloxane and alkylene oxide to obtain an intermediate I; and (2) contacting and mixing a neutralizer with the intermediate I to obtain the modified polyether plasticizer, relative to 100 parts by weight of the alpha, omega-dihydroxy polydimethylsiloxane, the use amount of the base catalyst is 0.1 to 1 part by weight, the use amount of the alkylene oxide is 400 to 900 parts by weight, and the use amount of the neutralizer is 0.12 to 1.2 parts by weight. The silane modified polyether waterproof coating prepared from the modified polyether plasticizer provided by the invention has obviously better weather resistance.

The invention discloses an anti-scraping thin coating type powder coating plate and a preparation method thereof, and relates to the technical field of coating materials and metal surface treatment. According to the scheme, the method comprises the following steps: forming a film on the surface of a degreased, alkali-washed and passivated metal substrate by adopting an interface modification liquid containing a silane coupling agent KH-590; and performing melt extrusion on a powder coating prepared from a hydroxyl-terminated polyether-ether-ketone / bisphenol A type epoxy silane grafted composite resin matrix, a triglycidyl isocyanurate / caprolactam composite curing agent and a titanate modified nano composite filler, and then performing electrostatic spraying and curing to obtain a coated plate with a dry film thickness of 20-40 [mu] m, wherein the powder coating is prepared from the hydroxyl-terminated polyether-ether-ketone / bisphenol A type epoxy silane grafted composite resin matrix, the triglycidyl isocyanurate / caprolactam composite curing agent and the titanate modified nano composite filler. The invention has the following beneficial effects: the interface modification layer and the silicon-containing grafted resin cooperate to improve the interface bonding force, boiling resistance and salt spray resistance; the multi-scale hard filler constructs a reinforced skeleton in the film, so that the scratch resistance is improved while the mechanical property is maintained, and thin coating and powder saving are realized under the condition of ensuring the decoration and durability.

The objective is to provide a treated copper foil that can adhere firmly to a substrate at a smooth interface with minimal irregularities, and a method for manufacturing the same. Furthermore, the objective is to provide a laminate in which the treated copper foil and the substrate are firmly adhered at a smooth interface with minimal irregularities, and a method for manufacturing the same. [Solution] By using a treated copper foil in which a conductive layer (B) containing silver (b1) is laminated onto a copper foil (A) with a smooth surface, it is possible to firmly adhere the copper foil (A) and the substrate (D) at a smooth interface with minimal irregularities, thus completing the present invention.

The present application relates to a kind of supramolecular surfactants based on fluorine-fluorine interaction, belong to supramolecular coordination chemistry, surface modification engineering and hydrophobic coating technical field.The esterification reaction of perfluorooctanoic acid and high molecular weight polypropylene glycol is carried out in the present application to prepare flexible ligand PFOA-PPG-PFOA, the ligand can be bent, form supramolecular micelles by fluorine-fluorine interaction with the help of zinc ion in solvent, and self-assemble into a kind of supramolecular surfactants based on fluorine-fluorine interaction.The active agent can be applied in the field of hydrophobic coating, coating has the characteristics of imitating lotus leaf structure and hydrophobic wax, and has good hydrophobic performance.

The invention belongs to the technical field of anticorrosive and antibacterial coatings, and particularly relates to a self-repairing antibacterial anticorrosive coating and a preparation method thereof. The core-shell structure nanofiber membrane with a high polymer material as a shell and a metal corrosion inhibitor as core liquid is prepared by adopting a coaxial electrostatic spinning technology. An epoxy resin coating is sprayed on an iron sheet in advance, the sprayed epoxy resin is subjected to low-temperature pretreatment to be in a semi-solidified state, and a core-shell structure nanofiber membrane is attached to the pretreated epoxy resin coating; and finally, spraying the epoxy resin containing the antibacterial agent and the antibacterial agent ethanol solution on the surface of the fiber membrane again to prepare the composite coating with a sandwich structure. The prepared composite coating has good antibacterial ability, after the iron sheet coating is damaged, the anti-corrosion coating can rapidly release an anti-corrosion healing agent to rapidly repair the damaged part of the coating, and the composite coating has efficient self-repairing anti-corrosion ability and has good application prospects in the anti-corrosion field.

The application provides a nanoscale composite lubricant, a ceramic guide plate of a probe card and a preparation method of the ceramic guide plate. The composite lubricant comprises the following components in mass fraction: 60-85% of Teflon nanoparticles, 5-20% of an adhesive reinforcing phase, 15-35% of a dispersion medium and 0.1-5% of a functional additive. The ceramic guide plate is provided with a plurality of needle implantation holes, one probe is inserted into each needle implantation hole, the inner wall of each needle implantation hole is coated with a dry lubricant coating, the dry lubricant coating is filled between the probe and the inner wall of the needle implantation hole, and the dry lubricant coating is formed by solidification of the composite lubricant coated on the inner wall of the needle implantation hole. By coating the nanoscale lubricant coating in the needle implantation hole of the ceramic guide plate, the sliding resistance and friction of the probe during movement are significantly reduced, the probe card stagnation phenomenon and abrasive contamination are effectively avoided, and the cleanliness and yield of the test are improved.

Provided is an ink-repellent member including an underlying portion containing an inorganic oxide, the ink-repellent member having a fluorine compound bonded to a surface of the underlying portion, wherein the fluorine compound has a chain structure, and is bonded to the surface by forming a phosphonic acid ester structure at each of both ends thereof.