130 results about "Silica coating" patented technology

The invention belongs to the technical field of environmental protection, and provides a preparation method of an imine-modified functionalized mesoporous magnetic silicon dioxide nano material. The method comprises the following steps: synthesizing Fe3O4 magnetic nanoparticles in a Fe < 2 + > / Fe < 3 + > alkaline hydrolysis system through a coprecipitation method; then coating the magnetic nanoparticles with an amorphous silicon dioxide layer by taking TEOS (tetraethoxysilane) as a silicon source by adopting a sol-gel method, so as to prepare magnetic silicon coated nanoparticles; the prepared nano-particles are subjected to secondary silicon coating guided by a cetyl trimethyl ammonium bromide (CTAB) mesoporous template agent, and mesoporous magnetic silicon nano-particles are formed after calcination; and finally, carrying out surface amination modification on the mesoporous magnetic silicon nano-particles by utilizing an amino silane coupling agent, and then carrying out condensation reaction on the mesoporous magnetic silicon nano-particles and various aldehyde derivatives to construct imine bonds, so as to obtain the imine-modified functionalized mesoporous magnetic silicon dioxide nano-material. The imine-modified functionalized mesoporous magnetic silicon dioxide nano-material formed by the invention has the characteristics of efficient adsorption, rapid magnetic recovery and excellent environmental stability, and can effectively remove polystyrene micro-plastics and organic pollutants in a water body.

The present invention discloses a CrN-supported Pt single-atom site catalyst, its preparation and application. In the present invention, a novel Pt single-atom site catalyst is prepared with CrN as the support and single-atom Pt as the active component. Among them, CrN has excellent electrical conductivity, good acid resistance and structural stability, and is an ideal support for the Pt single-atom catalyst used in the electrocatalytic oxidation reaction of hydrogen. Moreover, due to the strong interaction between Pt atoms and the large specific surface area of the prepared CrN, the atomic-level uniform distribution of Pt and the improvement of the loading amount are ensured, so that the catalyst not only has high catalytic performance but also has the ability to resist CO poisoning. The problem of particle agglomeration during the formation of CrN is effectively alleviated by the method of silica coating. This method has universality and can be used to prepare various nanomaterials of small-sized transition metal nitrides, providing conditions for improving the performance of the catalyst after loading single-atom Pt.

The invention discloses an AR film and a preparation method thereof. The AR film comprises a surface film layer group, an AR use layer group and a bottom film layer which are sequentially laminated, the AR use layer group comprises an AR coating group, a hardened coating, a base material layer, a colorful coating and a pressure-sensitive adhesive layer which are attached in sequence; the AR coating group comprises an AF coating and a functional coating, and the functional coating comprises one or a combination of more of a silicon dioxide coating, a niobium pentoxide coating and a silicon oxide coating; according to the invention, the AR coating group and the colorful coating are reasonably arranged, and on the basis of having the anti-reflection and anti-reflection functions of a traditional AR film, the visual effect of the AR material is enhanced by utilizing the optical performance of the colorful coating and having the light arrangement polarization function, so that the overall color phenomenon looks more uniform and gorgeous, the visual feeling of consumers is improved, and the user experience is further improved. According to the preparation method provided by the invention, the AR film with good anti-reflection and anti-reflection effects and a good visual effect can be rapidly and stably prepared, and wide popularization and application are facilitated.

Coated articles are described herein that include a first layer. The first layer may comprise a planarization layer and / or a hydroxyl-modified layer. The planarization layer includes a silica or a partial silica-like having Si—O—Si—O bonds. The coated article further includes a surface-modifying layer disposed on a first surface area of the first layer. In aspects, the first layer has a molar ratio of hydrogen to silicon of about 0.2 or more. Methods of forming coated articles can include evaporating a functionalized polyhedral oligomeric silsesquioxane and impinging an ion beam thereon to from a planarization layer. Methods for forming coated articles can include impinging a plasma at a first major surface of a substrate to form a hydroxyl-modified layer.

The application discloses an amorphous silicon dioxide coating prepared based on micro-arc oxidation, a preparation method and application thereof, and belongs to the technical field of metal surface protection and silicon dioxide coating. In the application, a magnesium alloy, an aluminum alloy, a titanium alloy, a titanium-aluminum base and a nickel-aluminum base are used as anodes and are placed in a micro-arc oxidation tank, a hydrolytic solution of organic silicon is used as an electrolyte, and an amorphous silicon dioxide coating with a thickness of more than 100 mu m can be prepared within 20 minutes through a step-by-step step-incremental constant potential control means. The application utilizes the advantages of the micro-arc oxidation process and the sol-gel process, avoids their shortcomings, and realizes the superimposed synergistic effect of "1+1>2". The process steps of the application are simple, and the application is very suitable for full-automatic operation and processing in industry. The amorphous silicon dioxide coating with the required thickness, wear resistance, corrosion resistance, erosion resistance, oxidation resistance and other characteristics can be prepared by changing the electrolyte concentration, the micro-arc oxidation time and the electric control parameters, or through the conventional micro-arc oxidation constant voltage and constant current control means.

The invention belongs to the field of polymer coatings, and provides an aliphatic polyurethane finish paint with high adhesion resistance and a preparation method thereof. According to the invention, a polyurethane phase and a polyacrylate network are adopted to construct a semi-interpenetrating network structure, cyclic carbonate and hydrolyzable silane end groups are introduced into double-end functionalized polysiloxane, and a silicon-oxygen network surface layer is self-assembled after coating and curing; the high crosslinking density with the gel fraction being greater than or equal to 85%, the wear-resistant and anti-slip performance with the dry friction coefficient being greater than or equal to 0.50 and the abrasion mass loss being less than or equal to 0.030 g / 500 r, the ultra-low surface energy anti-dirt performance with the water contact angle being greater than or equal to 105 degrees and the surface free energy being less than or equal to 22 mN / m and the environment-friendly characteristic that the volatile organic compound content is less than or equal to 50 g / L are achieved; the three technical contradictions of high gel fraction and ultralow surface energy silica surface layer coupling, high hardness wear resistance and high friction coefficient maintenance, and high solid content and low volatility organic compound processing window and nano gradient silica surface layer construction are solved, and the nano gradient silica coating has wide application value in the field of industrial terraces and metal base material coatings.

The invention relates to the technical field of polypropylene, in particular to a flame-retardant polypropylene composite material and a preparation method thereof. The composite material is prepared from polypropylene, modified ammonium polyphosphate, dicumyl peroxide, an antioxidant and a lubricant. The modified ammonium polyphosphate is realized through silicon dioxide coating and branched molecular chain grafting, and the specific steps are as follows: firstly, hydrolytic polymerization is performed to form an alkenylated silicon dioxide coating layer, and then a flexible branched structure is introduced through sulfydryl-alkene click reaction and addition reaction. The material realizes collaborative optimization of flame retardance and mechanical properties, and is suitable for the fields of buildings, automobiles, electronics and the like.

The application discloses a multifunctional intelligent photovoltaic window which is assembled by a multifunctional variable color unit and a silicon solar cell, and has the characteristics of wide wave adjustment, self-driving and self-cleaning. The laminated structure multifunctional variable color unit mainly comprises a vanadium dioxide / silicon dioxide / polyurethane nanocomposite film, a polymer stable liquid crystal with a near-crystal-cholesteric phase transition, an indium tin oxide and a silicon dioxide coating, which are respectively used as a near-infrared light adjusting layer, a visible light adjusting layer, an electrothermal layer and a super-hydrophobic layer. Based on the above design, the intelligent photovoltaic window can realize dynamic adjustment of the transmittance in the wavelength range of 380-2500 nm, so that the ideal energy-saving effect is achieved. In combination with the high output power of the silicon cell and the excellent direct current heating effect of the indium tin oxide, the self-driving characteristic of the intelligent photovoltaic window is realized, and the energy-saving effect is further improved. In addition, the silicon dioxide super-hydrophobic coating with a contact angle of 150-160 degrees effectively solves the environmental dependence of the intelligent photovoltaic window, and the intelligent photovoltaic window also has a good vision under complex weather conditions such as rain and snow. The application can widen the application of the intelligent photovoltaic window in the fields of energy-saving buildings, automobiles and flexible photoelectric devices.

This invention belongs to the field of tertiary oil recovery technology, specifically relating to a CO2-switched magnetically driven nanoparticle, its preparation method, and its application. The magnetically driven nanoparticles are silica-coated Fe3O4 nanoparticles. The surface of the silica coating is further modified with amidine groups to act as CO2 switches. These CO2 switches cause the hydrophilicity of the magnetically driven nanoparticles to increase with the increase of CO2 solubility in the solution in which they are located. This invention integrates emulsification and demulsification functions through the CO2 switch loaded on the surface of the magnetically driven nanoparticles. Furthermore, the particles can be recycled using their own magnetic response, reducing costs. This nano-displacement agent can solve the problems of poor efficiency, ineffective oil-water separation, high economic costs, and environmental impact associated with existing displacement agents.

The utility model relates to the related field of advertisement painting films, in particular to an anti-corrosion and waterproof advertisement painting film which comprises a painting film base body, an anti-static coating, a fluorocarbon resin coating, a polyurethane coating, a nano silicon dioxide coating and the like. According to the utility model, the nano silicon dioxide coating is arranged to improve the hydrophobic performance of the advertisement inkjet film and reduce rainwater accumulation on the advertisement inkjet film, the polyurethane coating has good waterproof performance and can effectively prevent water from permeating into the advertisement inkjet film, and the fluorocarbon resin coating is arranged to improve the corrosion resistance of the advertisement inkjet film and prevent the advertisement inkjet film from being damaged. The corrosion of the advertisement inkjet film by external liquid and gas is reduced, the service life of the advertisement inkjet film is prolonged, the antistatic coating improves the antistatic capacity of the advertisement inkjet film, static accumulation can be reduced, the surface of the inkjet film is easier to clean and not prone to adsorbing dust, the attractiveness of the advertisement inkjet film can be effectively improved, and the service life of the advertisement inkjet film is prolonged. And the practicability of the advertisement inkjet film is improved.

To appropriately improve adhesiveness between an encapsulation part which encapsulates a resonator and a device chip without increasing the number of steps in a manufacturing process in an acoustic wave device.SOLUTION: A pattern 5 includes a first layer 5a consisting of a conductive material, a second layer 5b consisting of polyimide, and a third layer 5c consisting of a conductive material. A resonator 3 consists of the first layer 5a, and a wire 4 consists of both or any one of the first layer 5a and the third layer 5c. An encapsulation part 6 consists of a support layer 6a which is formed so as to enclose a formation region of the resonator 3 and consists of an insulating synthetic resin and a cover layer 6b which is supported on the support layer 6a. At least a part of a functional surface 2a and the first layer 5a is covered by a coating 5d consisting of silicon dioxide. In a single-layer region where only the second layer is positioned on the functional surface 2a, the coating 5b and the support layer 6a are fixed by the second layer 5b.SELECTED DRAWING: Figure 3

The invention relates to the technical field of photovoltaic glass processing, and discloses a tempering process of high-strength 2.0 mm coated photovoltaic glass, the process comprises cleaning treatment, coating treatment, curing treatment, tempering treatment and post-treatment, surface impurities and moisture are removed through the cleaning treatment, meanwhile, a nano-scale porous silicon dioxide coating layer is formed through the coating treatment, and the surface of the photovoltaic glass is subjected to the post-treatment. The film layer is preliminarily cured through curing treatment, so that the surface cleanness of the glass and the completeness of the coating layer are ensured, and a good foundation is provided for toughening treatment; through partition temperature control of heating treatment and cooperation of a quartz roller transmission system and driving of a variable-frequency synchronous motor and a servo motor, it is guaranteed that glass passes through all heating areas at a constant speed, the heating process is uniform and stable, meanwhile, a high-pressure air grid system is adopted for cooling treatment for quenching, air grid parameters are controlled, and cooling rate matching is guaranteed; and defects caused by uneven stress distribution are avoided.

The application relates to the technical field of wastewater treatment, in particular to a preparation method of a porous medium plate, a plasma device and a wastewater treatment equipment. The application dips an aluminum oxide plate into a first sol containing silicon dioxide to obtain an aluminum oxide plate loaded with a silicon dioxide coating. The silicon dioxide coating has a large specific surface area and hydroxyl groups exist on the coating surface, the hydroxyl groups can be combined with or adsorbed by low-lifetime active substances, the retention time of the low-lifetime active substances is prolonged, and the concentration and utilization rate of the low-lifetime active substances are improved. Due to the existence of the hydroxyl groups and the large specific surface area of the silicon dioxide coating, the silicon dioxide coating has strong adsorption capacity, so that the active substances adsorbed on the surface of the medium plate are increased, and then the reaction rate of the active substances and perfluorinated compounds is improved, so that the perfluorinated compounds are more completely degraded. The silicon dioxide has good dielectric properties, can enhance the dielectric constant and resistivity of the medium plate, and plays a positive role in the generation and transmission of the plasma.

The present invention provides hydrophobic coatings for transparent surfaces and processes of producing the same, whereby the invention is embodied by a transparent multilayer structure, comprising: a transparent substrate having an antireflective coating; a transparent surface coating comprising reactive hydroxyl groups, such as a silicon dioxide coating applied onto said transparent substrate; and a hydrophobic coating applied onto the outer layer of said transparent surface coating comprising reactive hydroxyl groups, whereby said hydrophobic coating comprises a fluorine free silicone polymer.

The utility model relates to the technical field of environment-friendly bricks, and discloses a water-permeable environment-friendly brick which comprises a brick body, an upper surface layer is fixedly connected to the top of the brick body, a lower bottom layer is fixedly connected to the bottom of the brick body, a reinforcing device is fixedly connected to the interior of the brick body, and a drainage device is fixedly connected to the interior of the brick body. A fixing rod is fixedly connected to the interior of the brick body, a first reinforcing rib is fixedly connected to the side face of the fixing rod, and a second reinforcing rib is fixedly connected to the side face of the first reinforcing rib. The silicon dioxide coating on the upper surface layer increases the hardness and anti-pollution capacity of the surface of the brick body, the design of the clamping grooves and the clamping blocks on the lower bottom layer facilitates splicing and fixing of the water-permeable environment-friendly bricks, impurities are effectively prevented from entering the brick body through the arrangement of the water-permeable layer and the filtering layer, and smoothness of water flow is guaranteed.

The utility model relates to the technical field of spraying, in particular to spraying equipment for a nanoscale silicon dioxide coating, which comprises a spraying box, a spraying gun barrel is arranged at the inner top of the spraying box, and a bidirectional screw rod is rotatably connected to the inner bottom of the spraying box; the adjusting mechanism is arranged in the spraying box; the adjusting mechanism comprises two sliding plates which are connected to the bottom in the spraying box in a sliding mode. According to the device, a first air cylinder, a connecting rod, a first rack and a first gear are utilized, a metal plate is turned over rapidly, the front face and the back face of the metal plate are turned over more conveniently, then the spraying efficiency of the metal plate is improved, a clamping block, a supporting block, a second gear and a second rack are utilized, the non-spraying face of the metal plate is supported, and the spraying efficiency of the metal plate is improved. And the spraying comprehensiveness of the spraying surface of the metal plate is guaranteed, and the effect of spraying the nanoscale silicon dioxide coating on the metal plate is improved.

The invention discloses an anti-bending and anti-fracture bamboo louver blade and a preparation process thereof, and belongs to the field of building decoration materials. In order to solve the problems that a traditional bamboo louver blade is prone to breakage and bending failure due to the fact that bamboo wood is low in cross grain strength and high in hygroscopicity, performance breakthrough is achieved through multi-dimensional synergistic modification. The preparation process comprises the following steps: selecting bamboo wood of 3-5 years old, cutting the bamboo wood, performing ultrasonic cleaning with sodium carbonate, treating linen fibers with acetic acid and a silane coupling agent, performing vacuum permeation and plastification with a glycerol-citric acid solution, constructing a bamboo wood-fibrofelt-bamboo wood three-layer composite structure, performing hot-pressing curing, and performing gradient drying, low-temperature circulation and beeswax-nano silicon dioxide coating edge sealing. Experiments show that the louver blade can resist bending for 5200 times, the elongation at break is 8.2%, the bending strength is 140 MPa, and the impact strength is 65 kJ / m < 2 >. Compared with a single reinforcing process of resin impregnation or recombined fibers, the bending fatigue resistance is improved by 32.7%-46.2% through cooperation of plasticizing modification, a laminated structure and surface protection, and the method is suitable for high-end building decoration scenes.

The invention provides a preparation method of a wear-resistant thermal shrinkage film, which comprises the following steps: optimizing a raw material formula, forming a three-layer structure, namely a fluorine-containing layer, a self-repairing modified layer and a supporting layer, inducing filler orientation by a gradient drawing process in combination with a pulsed magnetic field, and performing surface corona modification treatment and nano silicon dioxide coating, thereby obtaining the wear-resistant thermal shrinkage film. The prepared heat shrink film has remarkable advantages in the aspects of wear resistance, self-repairability, mechanical strength, optical performance and stability, and is particularly suitable for the fields of high-end cigarette packets, electronic devices and the like which have extremely strict requirements on packaging materials. Experimental results show that the wear-resistant life of the heat shrink film is doubled, the self-repairing rate reaches 88-95%, the tensile strength is 78-85 MPa, and the light transmittance is 89-93%.

The invention relates to the field of glass, and particularly discloses a processing technology for preventing glare glass from dusting and a grinding tool thereof.The processing technology comprises the following steps that to-be-processed glass is prepared, to-be-used agents are prepared, the temperature of a spraying chamber is adjusted to 300-500 DEG C, then spraying is conducted, after spraying is finished, the glass stands still for 3-6 hours in the environment of 170-200 DEG C, and after curing is finished, the glass is cooled to the room temperature; and transferring the glass into a grinding tool for grinding. According to the scheme, an acidic spraying agent is introduced, a proper curing temperature condition is matched, and a chemical reaction is promoted by virtue of an acidic environment and the most proper temperature, so that a closer and more stable interaction between a silicon dioxide coating and a glass substrate is promoted; after the coating is formed, the glass is transferred to a professional grinding tool, and the surface of the glass is finely ground by using a high-precision grinding head, so that the outermost coating with relatively weak binding force is removed, only the inner layer firmly adhered to the glass is reserved, and powder falling is avoided.

The invention relates to the technical field of insulating gloves, and discloses a manufacturing method of an arc-preventing insulating glove, which comprises the following steps: preparing a double-layer knitted glove, the double-layer knitted glove comprises an outer layer formed by knitting aramid 1313 fibers and an inner layer formed by blending cotton fibers and acrylic fibers according to a ratio of 2: 1; preparing a modified butyronitrile latex coating, and immersing the double-layer knitted glove into the modified latex slurry to form a compact coating; nano silicon dioxide coatings are additionally arranged on easy-to-wear parts such as fingertips of the glove through a secondary dipping process; by innovating a material system and structural design, multi-dimensional improvement of electric arc prevention, insulation and wear resistance of the glove is realized; through a four-stage protection mechanism of balancing an electric field through the conductive grid, resisting ablation of the aramid fiber outer layer, dissipating energy through the latex coating and resisting wear and strengthening of the nano inner layer, excellent arc-proof performance and insulating performance are achieved, and the wear-resistant service life is prolonged.

The present invention provides a wave-absorbing adhesive film, a wave-absorbing prepreg, and preparation methods thereof. The weight ratio of the resin to the magnetic medium type absorbent in the wave-absorbing adhesive film is 15 to 35:30 to 70, wherein the particle size of the magnetic medium type absorbent is less than or equal to 15 μm. The magnetic medium type absorbent includes a magnetic medium absorbent body and a surface modification layer, and the surface modification layer is a silica coating layer or a phosphorus oxide coating layer. The viscosity of the resin at 60 to 80 °C is less than or equal to 10,000 cps. In this application, targeted designs are carried out on both the resin material and the magnetic medium type absorbent of the wave-absorbing adhesive film. Even when the content of the magnetic medium material is relatively high, or even when it is the main body of the composite material, its uniform dispersion in the resin material is still ensured, ensuring the stable control of the electromagnetic parameters, areal density and thickness of the finally formed wave-absorbing prepreg.

The application relates to the technical field of lenses, in particular to a high-temperature-resistant lens and a preparation method thereof. The high-temperature-resistant lens comprises a lens base body and high-temperature-resistant coating layers coated on two sides of the lens base body, the high-temperature-resistant coating layers are coated by high-temperature-resistant coating liquid, and the high-temperature-resistant coating liquid comprises the following components: 100-200 parts of deionized water, 45-60 parts of methyl triethoxysilane, 15-30 parts of isopropyl alcohol, 15-60 parts of ethyl orthosilicate and 20-60 parts of silica sol. Inorganic silica coating layers formed by the combination of ethyl orthosilicate and silica sol are selected for surface modification treatment, due to the effective coating of the silicon film, inorganic coating layers can be formed at two ends of the lens, the inorganic coating layer structure can well resist high-temperature, high-humidity and high-heat environments, and therefore the high-temperature-resistant performance of the lens is improved.

The invention discloses high-speed dispersion equipment for nano silicon dioxide coating processing, and belongs to the technical field of coating processing equipment. The stirring mechanism is arranged below the driving mechanism and comprises a middle stirring assembly and a bottom stirring assembly, the middle stirring assembly comprises an inner packing auger and an outer packing auger, the outer packing auger is arranged outside the inner packing auger in a sleeving mode, and the driving mechanism is used for driving the inner packing auger and the outer packing auger to do reciprocating rotation in opposite directions; the bottom stirring assembly comprises a plurality of stirring blades, and the driving mechanism is also used for driving the plurality of stirring blades to rotate and perform planetary rotation at the same time; the bubble removing mechanism is arranged below the driving mechanism, and the bubble removing mechanism is used for collecting and breaking bubbles on the liquid surface of the coating; through the overall structure arrangement, the paint dispersing effect is improved, and meanwhile bubbles generated in the dispersing process are eliminated.

The invention discloses a composite super-hydrophobic coating material as well as a preparation method and application thereof, and belongs to the technical field of cultural relic protection. The composite super-hydrophobic coating material disclosed by the invention is composed of a benzotriazole-acrylic resin-fluorinated silicon dioxide composite super-hydrophobic coating; the benzotriazole-acrylic resin-fluorinated silicon dioxide composite super-hydrophobic coating comprises a benzotriazole coating, an acrylic resin coating and a fluorinated silicon dioxide coating which are sequentially assembled from the surface of a metal cultural relic, the fluorinated silicon dioxide coating is prepared by carrying out hydrolytic condensation on tetraethoxysilane by a sol-gel method. The composite super-hydrophobic coating based on benzotriazole-acrylic resin-fluorinated silicon dioxide is used for protecting metal cultural relics, the metal cultural relics are endowed with corrosion resistance to corrosive solutions and gases, and the coating does not cause surface color change. The method provided by the invention is used for solving the problems of poor performance, poor transparency and the like of the existing metal cultural relic anti-corrosion material.

The present application belongs to the technical field of hydrogel dressings, and particularly relates to a wet compress gel and application thereof. The wet compress gel comprises a functional component and a gel component; the functional component comprises composite silica gel balls, aluminum hydroxide, calcium carbonate and magnesium carbonate; the wet compress gel is packed in a breathable outer layer of a package to obtain a wet compress gel bag. In use, the wet compress gel bag can be heated by a microwave oven or hot water to apply heat to human skin, and the mineral beneficial factors can be released to the human body through the silica coating of deep-sea mud and shell powder; the obtained wet compress gel bag has excellent cold storage and heat storage performance, and the gel material has stable performance and better durability, and still has good cold storage and heat storage performance after multiple uses; the wet compress gel bag gel of the present application combines beneficial minerals and colloids, so that the gel has a Q elastic feel, and solves the common poor feel problem of cold and hot compress gels on the market which have strong flowability or weak resilience.

The application discloses a preparation method of an aluminum substrate IH applicable electric appliance inner pot, which comprises the following steps: S1, stamping forming an aluminum pot body structure and carrying out surface pretreatment; S2, mixing three kinds of different formula silica coating powder mixtures to realize the continuous spraying of a gradient distribution magnetic conductive layer from the bottom center to the upper part of the pot wall along the outer surface of the pot body by a cold spraying process; S3, placing in a protective atmosphere to carry out a first annealing treatment; S4, depositing a layer of ceramic coating easy-to-clean protective layer on the magnetic conductive layer of the outer surface of the pot body; S5, placing in a protective atmosphere again to carry out a second annealing treatment, so as to obtain the aluminum substrate IH applicable electric appliance inner pot. The preparation method realizes the performance optimization of the inner pot in different areas, improves the heating efficiency and uniformity, enhances the wear resistance and easy-to-clean property of the coating, and can meet the comprehensive demand of modern kitchen appliances on high-performance inner pots.

A nanoparticle generally includes a stimulus-responsive polymer core and a silica coating disposed on at least a portion of the core. Methods of forming nanoparticles. Methods of administering nanoparticles to a target subject.

In a first aspect, the invention is related to a silica containing dispersion comprising: (a) in the range of from 30 to 98 weight-% of a mixture comprising a resin and a compound having at least one (meth)acrylate group; (b) in the range of from 1 to 30 weight-% of silica; and (c) in the range of from 0.1 to 10 weight-% of a polyamine-grafted-polyacrylate copolymer; wherein the total weight of the silica dispersion are 100 weight-%. A second aspect of the invention is directed to the use of a silica containing dispersion according to the first aspect of the invention as coating agent. A third aspect of the invention relates to a method for coating of a surface. In a fourth aspect, the invention is directed to the use of a polyamine-grafted-polyacrylate copolymer according to (c) of the first aspect of the invention as dispersant for silica. A fifth aspect of the invention relates to a method for preparing a resin composition having silica dispersed therein. A sixth aspect is directed to a silica containing dispersion, obtained or obtainable by the method of the second aspect of the invention. A seventh aspect of the invention is related to a method for preparing a silica containing coating, and an eight aspect of the invention is directed to a coating, obtained or obtainable by the method of the seventh aspect of the invention.

The present invention relates to the field of environmental materials and water treatment technologies, and particularly to a graphene amino silica composite adsorbent for heavy metal wastewater treatment and its preparation method, including nanoparticles, an amino-functionalized silica coating layer, carboxylated reduced graphene oxide, a polydopamine modification layer, tetraethyl orthosilicate, 3-aminopropyltriethoxysilane, 3-mercaptopropyltrimethoxysilane, N-((4-vinylbenzyl)iminodiacetic acid), chitosan, β-cyclodextrin, cetyltrimethylammonium bromide, polyethylene glycol, L-ascorbic acid, 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride, and N-hydroxysuccinimide, which exhibits excellent adsorption performance for various heavy metal ions, far higher than that of traditional adsorbents and existing composite adsorbents.

The invention provides an IC soaking sheet surface micro-texture forming method and device, and relates to the field of electronic equipment manufacturing. According to the method, aluminum alloy is put into a stamping die to be subjected to stamping forming, and a workpiece with a micro-texture on one face is obtained; the workpiece is transferred to a PVD cavity, vacuumizing is conducted, inert gas is introduced, a sputtering power source is turned on, and a titanium oxide coating and a PTFE-silicon dioxide coating are sequentially sputtered and deposited on the face, with the microstructure, of the workpiece; and turning off a sputtering power supply, and blanking to obtain the IC soaking sheet. Wherein the aluminum alloy comprises the following components in percentage by weight: 2%-3% of Si, 0.2%-0.4% of Cu, 0.05%-0.1% of Ti, 0.1%-0.5% of B, 0.03%-0.08% of Sc, 0.02%-0.05% of Sr, less than 0.1% of inevitable impurities and the balance of aluminum. The prepared IC soaking sheet is good in heat conduction performance, heat transfer can be accelerated, the heat dissipation effect is enhanced, the bonding force between the sputtering functional coating and the aluminum alloy workpiece is high, and stability is good.