124 results about "Octadecyltrichlorosilane" patented technology

The invention discloses a transparent super-hydrophobicity wood coating which comprises the following components in parts by weight: 20-50 parts of water dispersive polyurethane resin or water dispersive alkyd resin, 4.5-25 parts of nano silica sol, 3-16 parts of nano cellulose gel, 0.1-1 part of octadecyl trichlorosilane or tetrahydroperfluorodecyltrichlorosilane or stearic acid and 0-45 parts of nano talc powder or nano calcium carbonate. A preparation method of the transparent super-hydrophobicity wood coating comprises the following steps: adding matrix resin and filler into a stirring kettle, and stirring uniformly to obtain slurry; grinding the slurry with a sand mill; adding a low-surface energy substance and supported nano silica sol; performing ultrasonic sufficient mixing for 30 minutes to obtain the transparent super-hydrophobicity coating. The transparent super-hydrophobicity wood coating disclosed by the invention has the advantages of low cost, controllable process, adjustable size and good applicability and is suitable for a preparation method of large-area preparation of transparent super-hydrophobicity surface; the prepared super-hydrophobicity film has good self-cleaning property, antifouling property, hydrophobic property, oleophobic property and the like.

The invention provides a preparation method of oil-water separation filter paper, belonging to the technical field of functional materials. The method comprises the following steps of: (1) sequentially adding ethyl orthosilicate and ammonia water into ethanol for reacting, and standing over night for aging; (2) adding octadecyltrichlorosilane into the aged mixed liquor, magnetically stirring, washing with ethanol, centrifuging, and drying to obtain hydrophobic silica particles; (3) preparing a tetrahydrofuran solution of polystyrene; (4) preparing hydrophobic silica/polystyrene/tetrahydrofuran mixed liquor; and (5) A: soaking filter paper into the mixed liquor, taking the filter paper out of the mixed liquor, putting the filter paper in clean watch glass, and drying at room temperature to obtain the oil-water separation filter paper; or (B) horizontally paving filter paper into clean watch glass, sucking a certain amount of mixed liquor, uniformly coating the mixed liquor on the surface of the filter paper, and drying at room temperature to obtain the oil-water separation filter paper. The method provided by the invention has the advantages of simple process, low economic cost, short period, small energy consumption, no need of complicated special equipment and no subsequent problem, thus the method has wide application prospects in the future.

The invention relates to a functional micro-well chip for trace detection on nucleic acid molecules and a preparation method of the functional micro-well chip. The preparation method of the functional micro-well chip comprises the following steps: on the basis of taking nano silicon dioxide as a substrate, modifying the substrate with octadecyltrichlorosilane, covering the substrate with a mask, and degrading the octadecyltrichlorosilane in an uncovered region by use of ultraviolet light, thereby obtaining patterned nano silicon dioxide super-hydrophilic micro-wells; and modifying the region of the super-hydrophilic micro-wells with a functionalizing silane reagent, wherein the functionalizing silane reagent is capable of adding functional groups to the region of the super-hydrophilic micro-wells by use of covalent bonds, and the functional groups can be combined with ligands to form the functional micro-well chip having biological specific affinity. The functional micro-well chip has the advantage of fixed-point confinement enrichment, so that sample application is simple and convenient, sample application points are regular and uniform, and the accuracy of detection is improved; meanwhile, the functional micro-well chip is excellent in optical properties and stable in chemical properties; a nucleic acid capture chain is modified by securely bonding the corresponding ligands with the covalent bonds so that the nucleic acid immobilization amount can be increased, and trace detection on biological nucleic acid molecules can be realized.

The invention discloses a preparation method of a super-hydrophobic silicon dioxide film. The method comprises the steps: SiO2 powder with super-hydrophobicity is obtained by surface modification; an electrophoretic technique is adopted to deposit the SiO2 powder on a metal matrix to obtain the super-hydrophobic SiO2 film. The electrophoresis matrix mainly comprises galvanized steel, aluminium, magnesium, titanium and alloy thereof. The super-hydrophobic SiO2 powder is obtained by hydrolysis condensation reaction of nanoscale SiO2 powder and long chain organosilane such as dodecyltrimethoxysilane, hexadecyltrimethoxysilane, octadecyltrimethoxysilane or chlorine and fluorine hydrophobic silane such as octadecyltrichlorosilane and total fluorine octyl trimethoxy silane under an alkaline condition. An electrophoretic liquid consists of acetone or alcohol, water, modified super-hydrophobic SiO2 powder and resin binder. The super-hydrophobic film which is prepared by the method is mainly used for aspects such as metal protection, self-cleaning and surface water mist icing prevention. The method has the advantages that the operation is simple; the cost is relatively low; the condition is mild; and the method is expected to be applied to industrial production on a large scale.

The invention discloses a light-sensing organic field-effect transistor and a preparation method thereof. The transistor comprises a substrate, a grid electrode arranged on the substrate and an insulating layer arranged on the grid electrode; the transistor further comprises a self-assembled monomolecular-modified layer and a source electrode, a drain electrode and at least one organic semiconductor compound single crystal wire positioned on the self-assembled monomolecular layer. The self-assembled monomolecular layer comprises materials of octadecyltrichlorosilane, octacyltrichlorosilane, phenyltrichlorosilane and the like; and the preferential organic semiconductor compound is 6-methyl-anthracene [2,3-b] benzo-[d] thiophene. The length of the organic semiconductor compound single crystal is 80-300 microns, and the diameter is 1-10 microns. The preparation method provided by the invention has simple prepration process and low cost, and the prepared organic field-effect transistor has very high response on a low-energy light source with the energy of 10-90 microwatts per square centimeter, high mobility, high photosensitivity and high ratio of light current to dark current.

The invention relates to a preparation method of a dendritic TiO2 nanocrystal-loaded Pt-Ce-Cu alloy nanoparticle benzaldehyde photocatalysis material. The preparation method comprises the following steps: preparation of micrometer ilmenite particles with octadecyl trichlorosilane adhered to the surface, preparation of dendritic TiO2 nanocrystal magnetic-assisted precipitate and assembling of Pt-Ce-Cu alloy nanoparticles on the surface of dendritic TiO2 nanocrystal. The prepared dendritic TiO2 nanocrystal-loaded Pt-Ce-Cu alloy nanoparticle material has remarkable selective photocatalysis characteristic for benzyl alcohol catalytic oxidation reaction for production of benzaldehyde.

Liquid coating solutions impart hydrophobicity to substrate surfaces (e.g., glass) and include a silane, preferably octadecyltrichlorosilane (OTS), dissolved in a liquid paraffinic solvent. Preferred liquid paraffinic solvents are normal (straight chain) liquid parrafins having between 10 to 20 carbon atoms per molecule exhibiting flash points (ASTM D93) of between about 70° C. to about 160° C., and initial boiling points (ASTM D86) of between about 185° C. to about 300° C. The OTS will be present in the hydrophobic solutions in amounts sufficient to form a hydrophobic coating on surfaces of substrates on which the solutions are applied, and most preferably will be present in amounts ranging between about 0.25 to about 2.5 molar. Applying a coating of the solution onto a substrate surface will allow the OTS for form a self-assembled monolayer thereon imparting hydrophobicity to the substrate as determined by a high contact angle of at least about 100°.

The invention discloses an organic monocrystal field effect circuit and a preparation method thereof. The preparation method comprises the following steps of: preparing a circuit mask plate; preparing a flexible plane internally-embedded laminated electrode with a circuit pattern, including, 1) connecting octadecyl trichlorosilane on a surface of a substrate, 2) preparing a source electrode, a drain electrode and a grid electrode on the modified substrate respectively, and connecting with mercaptopropyl trimethoxy silane, 3) spin-coating polydimethylsiloxane on the metal electrode surfaces of the source electrode, the drain electrode and the grid electrode, 4) transferring the grid electrode on which the polydimethylsiloxane is spin-coated, performing oxygen plasma processing on the metal electrode surface of the grid electrode, and the polydimethylsiloxane surfaces of both the source electrode and the drain electrode respectively to form oxhydryl, and 5) shearing the source electrode and the drain electrode, and connecting the grid electrode, the source electrode and the drain electrode to form an integral body so as to obtain the flexible plane internally-embedded laminated electrode; preparing the organic monocrystal field effect circuit. As a high-precision photo-etching technology is adopted to prepare the electrodes in the invention, high-precision and complex patterns can be prepared, and the preparation method is convenient and practical.

A mask with hydrophobic surface. The mask includes a substrate, a plurality of patterns formed on the substrate, and a self-assembled monolayer (SAM) formed on the substrate exposed by the patterns. The self-assembled monolayer includes an alkyltrichlorosilane-based layer such as octadecyltrichlorosilane (OTS) or perfluorodecyltrichlorosilane (FDTS) and formed by vapor process or solution process.

The invention discloses a novel method for preparing macroporous silicon dioxide@porous polymer core-shell microspheres. Non-porous silica microspheres are used as a core, octadecyltrichlorosilane isused for performing the surface hydrophobic modification, PVA and SDS are used as a dispersing agent, monomers GMA, a cross-linking agent EDMA and a pore forming agent are added to prepare the silicondioxide@porous polymer core-shell microspheres with a macroporous structure through an emulsion polymerization process. The preparation method is simple in preparation process, mild in conditions, and easy in mass production; and the surface of the prepared core-shell microspheres is a porous organic polymer which has higher acid and alkali resistance, the application range of core-shell fillersis enlarged, a larger aperture structure can be obtained, and the prepared core-shell microspheres are particularly suitable for the isolated analysis of biological molecules.

The invention provides a single aligned carbon nano tube jet-printing arrangement method. The method comprises the steps that a substrate is modified with octadecyltrichlorosilane (OTS), so that the surface of the substrate has a hydrophobic property; precise control over the thin film position, the aligned density and patterning of aligned carbon nano tubes is achieved on the functional hydrophobic substrate through ink-jet printing, and a carbon nano tube thin film which is uniform in density and consistent in orientation and has different patterns is arranged. By means of the method, the carbon nano tube arrangement area of the size from several micrometers to the wafer level can be effectively controlled; the problems can be solved that in all existing arrangement methods, the arrangement position, the arrangement orientation, the arrangement density and the thin film array patterning of one-dimensional nano materials on the substrate cannot be efficiently and precisely controlled;the method can be widely used for preparing various high-performance photoelectric devices, logic circuits and functional thin films based on the carbon nano tubes, and the method also has a wide application prospect in the field of flexible wearable nano devices.

The invention discloses a preparation method of an HPLC (high performance liquid chromatography) filler, and particularly relates to a method for bonding octadecyl on the surface of high-purify silica gel. Obtained particles can be used as the filling material of a liquid chromatography column so as to be used for separation and purification of a multi-component organic compound. The preparation method comprises the following specific steps: (1) carrying out acidification treatment on silica gel; (2) carrying out alkylation reaction on Si-OH on the surface of the silica gel by adopting a liquid phase reaction method by utilizing octadecyl trichlorosilane; and (3) carrying out end sealing treatment by using trimethysilyl chloride. Tested by packing a column, the obtained reverse filler is excellent in performance and high in stability compared with a commercial filler.

A superhydrophobic and self-cleaning surface including a substrate and a superhydrophobic layer. The superhydrophobic layer having a reacted form of octadecyltrichlorosilane. The octadecyltrichlorosilane is disposed on and crosslinked to a surface of the substrate via surface hydroxyl groups. The surface exhibits a rms roughness of 40 nm to 60 nm, a water contact angle of 155° to 180°, and a contact angle hysteresis of less than 15°. A method of preparing the substrate with a superhydrophobic and self-cleaning surface including treating a substrate with a plasma treatment, contacting the substrate with water or an alcohol to form an hydroxylated substrate, contacting the hydroxylated substrate with a solution of octadecyltrichlorosilane in an alkane solvent at a concentration in the range of 0.05 M to 0.3 M, and drying the solution on to the substrate under ambient air to form the superhydrophobic and self-cleaning surface on the substrate.

The invention discloses an inflame-retarding anti-fouling polyurethane coating. The coating comprises the following raw materials: waterborne polyurethane resin, water dispersible alkyd resin, aqueous colloidal silica, epoxy resin, polydimethylsiloxane, zinc oxide, alumina sol, talcum powder, nano-zirconia, kieselguhr, nanometer titania, bamboo charcoal powder, poly naphthalene vinylene, 2,2,4-trimethyl-1,3-pentanediol-monoisobutyrate, polypropylene glycerol aether, sodium di(2-ethyl-hexyl)sulfosuccinate, amidinourea phosphate, ammonium polyphosphate, pentaerythritol, melamine, 1-chloro-2-propano phosphate, perfluorooctyl ethyl trichlorosilane, octadecyltrichlorosilane, hexamethyldisiloxane, chitosan, chitin and water. The inflame-retarding anti-fouling polyurethane coating provided by the invention has the advantages that the water resisting property, abrasive resistance and antifouling property are good, the inflame-retarding property is excellent, and the service life is long.

The invention discloses a preparation method of a hydrophobic antibacterial nano-regenerated cellulose film, and the preparation method comprises: dispersing corn straw cellulose in an acetate buffersolution, adding sodium chlorite, tetramethyl piperidine oxide and a sodium hypochlorite solution, stirring, then adding sodium chlorite and a sodium hypochlorite solution, and stirring to obtain oxidized corn straw cellulose; dispersing the oxidized corn straw cellulose in deionized water, carrying out ultrasonic treatment and homogenizing in an ice water bath to obtain a nano-cellulose fiber filament dispersion liquid, adding N,N-dimethylacetamide, under a nitrogen atmosphere, stirring in an oil bath, cooling, adding lithium chloride, stirring, dissolving, spreading the mixture on a siliconwafer, drying to obtain a thin film, and cleaning and drying the thin film to obtain a nano regenerated cellulose film; and soaking the film in an octadecyl trichlorosilane and n-hexane solution, carrying out hydrophobic modification, taking the film out and washing the film with n-hexane, carrying out vacuum drying to obtain a hydrophobic modified nano-regenerated cellulose film, soaking the hydrophobic modified nano-regenerated cellulose film into an antibacterial extracting solution of Dioscorea cirrhosa, heating, finishing, washing with water and airing to obtain the hydrophobic antibacterial nano-regenerated cellulose film.

The invention relates to a preparation method of a self-assembly vanadium oxide film, and belongs to the field of inorganic semi-conductor functional materials. The preparation method comprises the following steps: carrying out ultrasonic cleaning on a substrate by utilizing an acetone solution, then carrying out ultrasonic cleaning by utilizing deionized water, carrying out the ultrasonic cleaning by utilizing absolute ethyl alcohol, and finally drying; putting the dried substrate in an octadecyltrichlorosilane-toluene solution, then standing, and then irradiating the obtained substrate by ultraviolet light; dissolving V2O5 and ascorbic acid in water, and adding diluted HCl to regulate the pH value until a transparent clear blue solution A is formed; dissolving cerium acetate and ammonium paratungstate in the water, and adding the diluted HCl to regulate the pH value so as to form a solution B; mixing the solution A with the solution B, stirring while mixing, adding polyethylene glycol, and then carrying out seal ageing; putting the substrate irradiated by the ultraviolet light into the solution subjected to seal ageing, then taking out the processed substrate and drying the processed substrate; and finally carrying out thermal treatment in the presence of Ar gas. In the preparation method, the synthesis is carried out at a lower temperature, thereby avoiding the toxicity of vanadium oxide at a high temperature, simplifying the process flow of precursor preparation and being beneficial to environment conservation and health of operators.

The invention relates to a preparation method and an application of OTS self-assembling water inhibition quartz sand. The preparation method comprises the following steps: (1) preparing an octadecyltrichlorosilane/methylbenzene liquid from octadecyltrichlorosilane and methylbenzene according to a ratio, thereby obtaining a reaction liquid; (2) performing surface treatment on the washed and dried common quartz sand for fracturing by using a chromic pickling liquid, washing, drying, thereby obtaining the treated quartz sand; and (3) adding the treated quartz sand into the reaction liquid, soaking, reacting, filtering, taking the precipitate, washing, drying, thereby obtaining the OTS self-assembling water inhibition quartz sand. The OTS self-assembling water inhibition quartz sand prepared by the invention is good in water inhibition and oil penetration performance and stable in surface properties and has good acid etching resistance and water erosion resistance. Moreover, compared with the common quartz sand, the OTS self-assembling water inhibition quartz sand disclosed by the invention is high in propping agent strength, low in breakage rate and good in diversion capacity, is suitable for large-scale oilfield application and has significance for improving the oil production rate and reducing the production cost.

The invention discloses a moisturizing dust suppressant which comprises the following components: paraffin oil, castor oil, tricosanol, pentacosanol, octadecyl trichlorosilane, lauryl alcohol, polyvinyl alcohol, an inorganic salt additive, a filler and water. The invention also discloses a preparation method of the moisturizing dust suppressant. According to the preparation method, mullite and volcanic rock as raw materials are subjected to acid and alkali treatment, corn straw and sugarcane straw are subjected to high-pressure water steam closed blasting treatment, and then are mixed with themullite and the volcanic rock for calcining to form a porous structure, and substances such as the paraffin oil, the castor oil, the tricosanol, the pentacosanol and the octadecyl trichlorosilane canbe adsorbed; and during use, the adsorbed substances such as the paraffin oil, the castor oil and the tricosanol are gradually released, so that dust is wetted, and dust suppression period can be increased and dust suppression time can be prolonged by adding the filler.

The invention discloses a novel high-strength anti-corrosion exterior wall thermal insulation decorative board, comprising a thermal insulation layer and a decorative layer, the decorative layer is arranged on one side of the thermal insulation layer, the thermal insulation layer is wrapped by an aluminum plate, and the center is filled with thermal insulation material , the aluminum sheet percentage includes Mg0.2%, Si 2.0%, Cu4.0%, Mn0.2%, Fe0.2%, Zr0.1%, Er0.1%, Cr0.01%, Ni0.01%, Ti0.1%, Al balance. The aluminum plate is through (1) smelting; (2) adding Al-5Ti-B, Al-lOSr and RE three kinds of metal refinement modifiers to add refinement modifiers; (3) standing for 2h under the condition of 100MPa to form a casting Ingot; (4) five hot rolling, three cold rolling under ultrasonic vibration; (5) C and V laser modification and (6) octadecyltrichlorosilane solution surface treatment to obtain the finished product. The invention utilizes multiple means to modify and process the material of the aluminum plate, so that the aluminum plate can still maintain the integrity of the oxide film when corroded under severe working conditions, avoid metal failure, and meet the requirements of today's industrial development.

The invention discloses a novel method for preparing self-suspension ceramsite. The novel method comprises the following steps: (1), xylene, acetone, octadecanol and butyl acetate in a certain mass ratio are added into a first reactor in which a stirrer and a thermometer are loaded; (2), under an ice-bath condition, dodecyl trimethylsilane, octadecyl trichlorosilane and stearic acid are slowly added into a second reactor in which a stirrer and a thermometer are loaded, and stirring for reaction for a period of time at a constant speed is performed under the condition of 78-80 DEG C, so as to obtain a head product A; (3), deionized water, alkylphenol polyoxyethylene, span 60 and ethyl alcohol in a certain mass ratio are added into the second reactor in which the stirrer and the thermometer are loaded, then the head product A is added, stirring for dispersing at a high speed for a period of time is performed, a certain mass of ceramsite is added, the reaction continues for a period of time, and ethyl alcohol is used for washing for two times, and then sample collecting is performed. The ceramsite prepared by adopting the method for preparing self-suspension ceramsite can be dispersed in water in a suspending manner, and as a fracturing propping agent, the ceramsite can ensure that high flow conductivity is kept at cracks and crack blockage are prevented.