15 results about "Octadecyltrimethoxysilane" patented technology

The application relates to the technical field of solar energy, in particular to a self-cleaning solar photovoltaic panel and a preparation process thereof. The application adds anhydrous ethanol, ammonia water, deionized water, methyl triethoxysilane, tetraethyl orthosilicate and octadecyl trimethoxysilane to prepare silica sol. Then, tetra(2-hydroxyethoxy)silane, polypropylene glycol, toluene diisocyanate, betulin, 3,4-diamino furazan, silica sol and a catalyst stannous octoate are added to prepare a polymer. Glass, ethylene-vinyl acetate copolymer, a cell piece and ethylene-vinyl acetate copolymer are sequentially laid in layers; the laminated assembly is assembled with a frame to obtain a solar photovoltaic panel. Finally, a coating is prepared by taking the polymer as a raw material, and the coating is coated on the solar photovoltaic panel to obtain a finished product. The finished product has good hydrophobicity and antibacterial property, and therefore has a wide application prospect.

This invention relates to the field of waterproof membrane technology, specifically to a TPO thermoplastic polyolefin polymer composite material. This material is composed of multiple components, including an interface-controlled masterbatch. Its core lies in the process of sequentially hydroxylating, treating with vinyltrimethoxysilane, hydrolyzing and condensing tetraethyl orthosilicate, and treating with octadecyltrimethoxysilane to obtain a surface-functionalized filler, which is then combined with maleic anhydride-grafted polypropylene to form the interface-controlled masterbatch. This design significantly improves the interfacial bonding between the filler and the polymer matrix, enabling the material to maintain excellent mechanical properties, dimensional stability, and low-temperature flexibility even after artificial climate aging, and effectively ensuring the long-term durability and reliability of welded joint areas.

The invention provides an anti-carbonization coating and a preparation method thereof, and relates to the field of coatings. The anti-carbonization coating is prepared from the following components in parts by weight: 32 to 38 parts of vinyl ester resin, 6 to 8 parts of rutile titanium dioxide, 8 to 12 parts of glass flake, 3 to 6 parts of mica powder, 1 to 3 parts of nano zirconium dioxide, 2 to 3 parts of nano silicon dioxide, 1 to 3 parts of modified boron nitride nano powder, 5 to 8 parts of styrene, 1 to 2 parts of methyl ethyl ketone peroxide and 1 to 2 parts of functional additive, according to the anti-carbonization coating provided by the invention, the sheet structures of the used glass flakes and boron nitride are synergistic, a permeation path is prolonged, the glass flakes and the boron nitride are jointly dispersed in resin, stress is absorbed through interlayer slippage, and crack propagation of a coating is reduced; under the combined action of gamma-aminopropyltriethoxysilane and octadecyltrimethoxysilane, dual functional modification is given to the boron nitride nanosheets, covalent bonds or hydrogen bonds are formed by the boron nitride nanosheets and polar groups in vinyl ester resin through chemical bonding, and the interface bonding force between filler and a matrix is enhanced.

The invention belongs to the technical field of new materials, and particularly relates to temperature-pH dual-response antioxidant hollow mesoporous silica nanoparticles as well as a preparation method and application thereof. The method disclosed by the invention comprises the following steps: S1, carrying out hydrophobic modification on HMSNs by adopting octadecyl trimethoxy silane, so as to obtain HMSNs-C18; s2, carrying out amination modification on the HMSNs-C18, so as to obtain HMSNs-C18-NH, and carrying out initiator fixation treatment on the HMSNs-C18-NH, so as to obtain HMSNs-C18-Br; the preparation method comprises the following steps: carrying out PNIPAM grafting treatment on HMSNs-C18-Br to obtain HMSNs-C18-PNIPAM-Br, carrying out PAA grafting treatment on the HMSNs-C18-PNIPAM-Br to obtain HMSNs-C18-PNIPAM-b-PAA, and carrying out PNIPAM grafting treatment on the HMSNs-C18-PNIPAM-b-PAA to obtain HMSNs-C18-PNIPAM-b-PAA; and S3, grafting gallic acid on the HMSNs-C18-PNIPAM-b-PAA, so as to obtain the temperature-pH (Potential of Hydrogen) dual-response antioxidant hollow mesoporous silicon dioxide nano particles. By adopting the temperature-pH dual-response antioxidant hollow mesoporous silica nanoparticle entrapped plant essential oil prepared by the invention, the solubility and bioavailability of the essential oil can be improved, the active ingredients of the essential oil are protected, the release of the active ingredients is controlled, and the storage stability, bacteriostasis and oxidation resistance of the essential oil are improved. The effects of oxidation resistance, bacteriostasis and the like of the essential oil can also be remarkably improved through the slow release effect.

The application discloses a self-cleaning and cooling flexible transparent film and a preparation method thereof. The flexible film is mainly composed of PVDF and PMMA polymer monomers, and the preparation method comprises the following steps: mixing PVDF and PMMA, adding a solvent DMAc or DMF, and fully stirring to obtain a colorless transparent solution; adding a low surface energy modifier trimethoxy (1H, 1H, 2H, 2H-heptadecafluorodecyl) silane or octadecyl trimethoxysilane into the colorless transparent solution and fully dispersing by magnetic stirring; placing the prepared solution at room temperature for 2-4 hours, transferring the solution to a cleaned glass, coating a film on the surface of the substrate by an adjustable scraper, forming a flat coating, and placing the coating into a 70-130 DEG C oven to completely solidify. The film is a flexible and bendable film, has good light transmittance, a hydrophobic rolling angle, and has remarkable refrigeration and cooling performance, and can be widely used in the outer surfaces of objects, such as special-shaped curved surfaces, solar cell panels and building glasses, which need light transmission and cooling.

The invention relates to the technical field of surface coatings, in particular to a fluoride-free anti-fingerprint coating working solution, a method for forming a fluoride-free anti-fingerprint coating on a base material and a workpiece with the fluoride-free anti-fingerprint coating. The fluoride-free anti-fingerprint coating working solution provided by the invention comprises a main agent and a solvent, the main agent is prepared from the following components in percentage by mass: 20 to 25 percent of trimethoxy siloxane modified polyhedral oligomeric silsesquioxane; 20% to 25% of trimethoxy double-end-capped polydimethylsiloxane; 20% to 25% of trimethoxy single end capped polydimethylsiloxane; 15% to 20% of octadecyl trimethoxy silane; 10% to 15% of 1, 2-bis (triethoxysilyl) decane; 2%-5% of a cross-linking agent; 0.05% to 0.08% of a catalyst; wherein the trimethoxy siloxane modified polyhedral oligomeric silsesquioxane has a structure as shown in a formula (1) which is described in the specification. According to the invention, the coating has excellent hydrophobicity and wear resistance.

The invention discloses a preparation method of an ODTMS modified halloysite / polyurea composite super-hydrophobic coating. The composite coating prepared by the invention is a composite coating which takes polyurea as a matrix and ODTMS modified halloysite as a filler and has super-hydrophobic performance. The hydrophobic modification mechanism of ODTMS (octadecyltrimethoxysilane) on halloysite is essentially that non-polar long-chain alkyl is grafted to the surface of a mineral through a covalent bond through a silane hydrolysis-surface condensation reaction, hydrophilic hydroxyl is replaced, a hydrophobic layer with low surface energy is formed, and the hydrophobicity of the silanized halloysite / polyurea composite coating can be improved through the method. Due to the fact that polyurea is listed by flexibility, abrasion resistance and adjustable cross-linking density, the polyurea is an ideal matrix for containing the nanofiller, meanwhile, structural integrity is kept under pressure, and the composite coating is endowed with good hydrophobicity, corrosion resistance and abrasion resistance. The key technical problems of traditional materials in the fields of water resistance, antifouling, corrosion resistance and the like are solved, and a practical and effective method is provided for preparing high-performance multifunctional materials.

The invention relates to a composite functional material in the field of high polymer materials, in particular to double-layer hydrophobic-oleophylic composite oil absorption cotton and a preparation method thereof.The double-layer hydrophobic-oleophylic composite oil absorption cotton comprises an outer-layer hydrophobic material layer and an inner-layer oleophylic material layer, and the outer-layer hydrophobic material layer and the inner-layer oleophylic material layer are subjected to interface fusion through a hot pressing technology; the outer hydrophobic material layer is prepared from the following components in parts by weight: 85 to 95 parts of fluorinated polypropylene resin; 0.5 to 2 parts by weight of polydimethylsiloxane; 0.1 to 0.3 part by weight of ascorbyl palmitate; the inner oleophylic material layer is prepared from the following components in parts by weight: 90 to 98 parts of modified polyester fiber; 0.5 to 1.5 parts by weight of alkyl alcohol polyoxyethylene ether; the outer layer hydrophobic material effectively prevents tobacco tar leakage, and the inner layer oleophylic material ensures efficient guiding and uniform distribution of the tobacco tar.

The application discloses an alkylated SiO2 / CNFs super-amphiphobic sol coating, a coating and a preparation method and application, and belongs to the technical field of coating, wherein the super-amphiphobic sol coating is obtained by sequentially modifying SiO2 nanoparticles and cellulose nanofiber CNFs by gamma-aminopropyl triethoxysilane and octadecyl trimethoxysilane. The application solves the problems of low transparency and poor mechanical stability of the existing super-amphiphobic coating. The super-amphiphobic sol coating of the application is used as a coating material, the obtained coating has excellent super-amphiphobic performance and mechanical performance, prevents the overall failure of the coating when the coating is subjected to mechanical impact, and is suitable for transparent substrate surface protection with high requirements for light transmission and durability.

The application discloses a bifunctional mesoporous silica material and a preparation method and application thereof, and the bifunctional mesoporous silica material is MCM-41@COOH@C 18 mesoporous microspheres; the MCM-41@COOH@C 18 The mesoporous microspheres are obtained by modifying MCM-41 through 3-aminopropyl triethoxysilane, succinyl and octadecyl trimethoxysilane. The application optimizes solid phase extraction parameters, uses an amide chromatographic column for separation, and establishes an ultra performance liquid chromatography-tandem mass spectrometry (UPLC-MS / MS) detection method for six kinds of aminoglycoside drugs (AGs) residues in milk. The material is low in cost, simple in production, and high in operability as a SPE filler, and can be applied to detection of AGs in other food or agricultural product samples in the future.

The invention relates to the technical field of oil and gas field drilling, and discloses a nano-silica cooling material and an oil-based drilling fluid, the cooling material is a three-stage modified nano-silica particle dispersion liquid, the cooling material is prepared from the following raw materials: nano silicon dioxide, octadecyl trimethoxy silane, a fluorine-containing modifier and polydimethylsiloxane (PDMS). The specific heat capacity of the drilling fluid can be remarkably improved by 9.7%, the heat conductivity coefficient is improved by 6.6%, the high-temperature and high-pressure filter loss after aging at 160 DEG C is smaller than or equal to 5.2 mL, the drilling fluid is excellent in compatibility with an oil-based system, an efficient and long-acting cooling technical solution is provided for high-temperature drilling operation of a deep shale gas well, the stability and performance of the drilling fluid in a high-temperature environment are remarkably improved, and the drilling fluid has good application prospects. The drilling fluid solves many technical problems encountered in a deep high-temperature environment in the traditional drilling fluid, and has important practical application value.

The invention discloses an alkylated SiO2 / CNFs super-amphiphobic sol coating, a coating, a preparation method and application, and belongs to the technical field of coatings, and the super-amphiphobic sol coating is obtained by sequentially modifying SiO2 nanoparticles and cellulose nanofibers CNFs with gamma-aminopropyltriethoxysilane and octadecyl trimethoxysilane. The problems that an existing super-amphiphobic coating is low in transparency and poor in mechanical stability are solved, the super-amphiphobic sol coating serves as a coating material, the obtained coating has excellent super-amphiphobic performance and mechanical performance, overall failure of the coating when the coating is subjected to mechanical impact is prevented, and the service life of the coating is prolonged. The transparent protective film is suitable for surface protection of transparent base materials with high requirements on light transmittance and durability.

The invention discloses low-energy-consumption efficient oil-mixing long-acting lubricating oil and a preparation method thereof, and belongs to the technical field of high-performance lubricating oil. The lubricating oil is prepared by taking epoxidized soybean oil as base oil and adding two specific surface modification nano additives, a dispersing agent, an antioxidant, a viscosity index improver and a defoaming agent. The two core additives are respectively octadecyl trimethoxy silane modified rare earth fluoride doped hexagonal boron nitride nanosheets and organosilane functionalized molybdenum disulfide / zinc sulfide heterostructure nanospheres. The rare earth fluoride is prepared through a pulse Joule heating and heat treatment composite technology, and effective doping and anchoring of rare earth fluoride on boron nitride are achieved. The latter is used for synthesizing a heterostructure through a hydrothermal method, and surface modification is completed in a weakly acidic buffer system. The prepared lubricating oil has good compatibility with various base oils, the nano additive has excellent dispersion stability, friction and wear can be significantly reduced, and long-acting lubrication is realized.

The invention relates to the field of well cementation of oil and gas well engineering, and discloses a water-based dispersion liquid composition, a water-based dispersion liquid, a preparation method of the water-based dispersion liquid and cement paste. The water-based dispersion liquid composition comprises one or more of steel mill smoke dust, water, a dispersing agent and a surface coating agent which are independently stored; wherein the wrapping coating agent is polyethylene glycol, and the dispersing agent is selected from one or more of a polycarboxylic acid dispersing agent, octadecyl trimethoxy silane, sodium polyphosphate, sodium pyrophosphate and sodium orthophosphate. The water-based dispersion liquid disclosed by the invention can play a role in increasing the density of the cement paste in the cement paste, and can improve the compactness of set cement and enhance the anti-channeling performance of the cement paste through filling and blocking effects.

This invention provides a PDA / ODT-ODTMS composite coating and its preparation method, relating to the field of metal surface protection technology. The coating comprises, from the inside out, a polydopamine intermediate layer and a co-deposited functional layer of n-octadecyl mercaptan / octadecyltrimethoxysilane. The preparation method involves first electrodepositing a PDA intermediate layer on the substrate surface, then immersing it in an aqueous micelle deposition solution composed of n-octadecyl mercaptan, octadecyltrimethoxysilane, and a surfactant, and forming the composite functional layer through isothermal chemical deposition. This invention, through molecular-level co-deposition of ODT and ODTMS combined with an aqueous micelle process, constructs a firmly adhered, dense, and highly hydrophobic protective barrier on the metal surface, significantly improving the long-term corrosion resistance and stability of the coating, while also making the preparation process safer and more environmentally friendly.