523 results about "Octadecane" patented technology

The invention provides a content detection method for a salvia miltiorrhiza medicinal material, a salvia miltiorrhiza clear paste and a musk heart-dredging dropping pill. According to the method, a high performance liquid chromatography method is adopted, octadecylsilane chemically bonded silica is used as a chromatographic column filler, acetonitrile is used as a mobile phase A, 0.02%-0.1% trifluoroacetic acid is used as a mobile phase B, gradient elution is carried out, and rosmarinic acid and salvianolic acid B in the salvia miltiorrhiza medicinal material are synchronously and quantitatively detected. And synchronously and quantitatively detecting tanshinol, protocatechuic aldehyde, caffeic acid, salvianolic acid E, rosmarinic acid, alkannic acid and salvianolic acid B in the salvia miltiorrhiza clear paste, and synchronously and quantitatively detecting tanshinol, protocatechuic aldehyde, caffeic acid, salvianolic acid E, rosmarinic acid, alkannic acid, salvianolic acid B, arenobufagin and bufalin in the musk Tongxin dropping pill. The method is used for monitoring the content of specific components, can also judge the transfer rate in the medicine production process, and facilitates traceability in the production link. In addition, the method is relatively low in equipment requirement and suitable for industrial popularization.

The invention relates to the field of pharmaceutical analytical chemistry, in particular to a method for determining tandospirone and salt intermediates thereof, high performance liquid chromatography is adopted, and chromatographic conditions include that a chromatographic column with octadecylsilane chemically bonded silica as a filler is adopted, and gradient elution is performed by a mobile phase A and a mobile phase B; wherein the mobile phase A consists of a first water phase and acetonitrile; the mobile phase B is composed of a second water phase and acetonitrile; the first water phase is a water solution containing monopotassium phosphate and sodium hexanesulfonate, and the pH value of the first water phase is 3.0-3.8; the second water phase is an aqueous solution containing monopotassium phosphate and sodium hexanesulfonate, and the pH value of the second water phase is 1.8-2.6. The testing method disclosed by the invention has good specificity, accuracy and repeatability, and can be used for monitoring the quality of the tandospirone raw material medicine.

The application belongs to the technical field of oil and gas field development, and provides a phase permeability improver, a fracturing fluid system containing the same, and respective preparation methods and applications. The phase permeability improver is obtained by copolymerization and hydrolysis of acrylamide AM, a functional monomer 2-acrylamido-2-methylpropanesulfonic acid AMPS, and cationic hydrophobic monomers A and B; the cationic hydrophobic monomer A is at least one of tetradecyl dimethyl allyl ammonium chloride, hexadecyl dimethyl allyl ammonium chloride, and octadecyl dimethyl allyl ammonium chloride; the cationic hydrophobic monomer B is at least one of methacryloyloxyethyl trimethyl ammonium chloride, acryloyloxyethyl trimethyl ammonium chloride, and acryloyloxyethyldimethyl benzyl ammonium chloride; the phase permeability improver and the fracturing fluid system containing the same can significantly reduce the water phase permeability after fracturing operation, while having a smaller influence on the oil phase permeability, and have a significant effect of stabilizing oil and controlling water, and can significantly improve the stable production effect of fracturing operation in a low-permeability oil reservoir.

The application provides a temperature-resistant and salt-resistant wall stabilizer for a ten-thousand-meter deep well water-based drilling fluid and a preparation method and application thereof, and belongs to the technical field of drilling. The preparation method of the wall stabilizer comprises the following steps: acrylic acid is added into deionized water, the pH of the system is adjusted to 7.0, then N-hydroxymethyl acrylamide, N-[2-(3,4-dihydroxyphenyl)ethyl]-2-acrylamide, an emulsifier, octadecyl vinyl ether and a complexing agent are sequentially added into the system, shearing is performed, a monomer solution is obtained, an initiator is added into the monomer solution, and reaction is performed; after the reaction is completed, washing, drying and crushing are performed, and the wall stabilizer is obtained. The wall stabilizer has a temperature resistance of 200 DEG C and a salt resistance of saturation, has strong adsorption and high cohesion, can effectively adsorb, plug and cement micro-pores and micro-cracks of rocks, thereby consolidating the rocks, effectively enhancing the well wall stability, preventing drilling fluid leakage and providing technical support for safe and efficient drilling of deep wells.

The invention relates to the field of plasma separation and detection, in particular to a composition for separating plasma and a using method thereof. The composition comprises: a phase change component, which is selected from n-alkanes, which are selected from at least one of n-tetradecane, n-pentadecane, n-hexadecane, n-heptadecane, n-octadecane, n-nonadecane, n-eicosane, n-heneicosane or n-docosane; a liquid phase carrier component, wherein the liquid phase carrier component is selected from silicone oil; the structural framework and rheology regulation and control component comprises fumed silica, and the structural framework and rheology regulation and control component comprises fumed silica; the dispersion and stabilization auxiliary agent component is selected from at least one of TiO2 and BaSO4, the density adjusting filler component is selected from at least one of TiO2 and BaSO4, and the dispersion and stabilization auxiliary agent component comprises a silane coupling agent. According to the device, plasma and blood cells can be reliably, rapidly and effectively separated only through one-time low-temperature centrifugation, and remixing caused by transportation jolting can be avoided.

The invention relates to the technical field of heat energy storage materials, and particularly provides a silicon dioxide aerogel composite phase change heat storage material and a preparation method thereof. The method comprises the following steps: mixing an organic silicon source, absolute ethyl alcohol and deionized water according to a specific ratio, fully stirring to obtain a mixed solution, and dropwise adding an acid catalyst into the mixed solution at room temperature for hydrolysis reaction to obtain a hydrolysate; sequentially adding a drying control agent and an alkali catalyst, and standing for gelation reaction to obtain gel; adding an organic solvent to carry out aging reaction, and then adopting the organic solvent to carry out replacement for multiple times to obtain alcogel; replacing the alcohol gel with an organic solvent for multiple times to obtain wet gel, soaking the wet gel in an excessive molten phase change material, and carrying out normal-pressure solvent replacement and drying at 40 DEG C to obtain the phase change material, the loading capacity of octadecane in the obtained CPCM is about 83%, the phase change enthalpy reaches up to 192J / g, the heat conductivity is as low as 0.0812 W / m.K, and no obvious leakage occurs after 200 times of circulation.

The invention relates to the technical field of chemical fiber manufacturing, in particular to a preparation process of graphene reinforced porous hollow polyester fibers. The problems that existing polyester fibers are insufficient in mechanical property and poor in moisture absorption and air permeability are solved. The preparation method comprises the following steps: modifying a PET sheet by using 2, 2-dimethylolpropionic acid and hydroxyl-terminated polydimethylsiloxane to obtain modified PET; the preparation method comprises the following steps: taking chitosan modified graphene as a carrier, and loading metal ions to obtain loaded graphene; polyethylene glycol and sodium bicarbonate are used as pore-foaming agents; modifying octadecyl dimethyl allyl ammonium chloride to obtain an antibacterial toughening agent; all the components are mixed, and the polyester fiber is prepared through melt spinning, stretching, heat treatment and alkali treatment. The mechanical property of the fiber is improved through the introduction of graphene and the modification treatment of the PET sheet; by utilizing the composite pore-foaming agent and adjusting the process, the moisture absorption and air permeability of the fiber are improved, and the service life of the fiber is prolonged.

The invention relates to a phase change energy storage fiber with ultraviolet shielding and heat regulation and control functions and a preparation method of the phase change energy storage fiber. The preparation method comprises the following steps: dissolving thermoplastic polyurethane in N, N-dimethylformamide to form a spinning mother solution; the preparation method comprises the following steps: firstly, adding nano titanium dioxide and uniformly dispersing, then adding a silicon dioxide shell layer-octadecane core layer phase change microcapsule, and stirring and ultrasonically defoaming to obtain a uniform composite spinning solution; extruding the spinning solution into a coagulating bath consisting of isopropanol and deionized water through an injection pump, and coagulating and forming to obtain nascent fibers; finally, washing, solvent replacement, tension setting and drying treatment are conducted, and compared with the prior art, the obtained fiber has efficient ultraviolet shielding performance and remarkable phase change energy storage capacity and has wide application prospects in the fields of intelligent temperature adjusting textiles, outdoor protective garments, building heat management and the like.

The application provides an octadecane-loaded cellulose-based composite phase change material evaporator and a preparation method and application thereof in seawater desalination, and belongs to the fields of photo-thermal conversion materials and separation technologies. Nanocellulose and polyvinyl alcohol are mixed to prepare an aerogel, octadecane is encapsulated in the pores of the aerogel by a vacuum impregnation method to obtain a composite phase change material aerogel, and the composite phase change material aerogel is coated with a non-woven fabric loaded with polypyrrole to obtain the octadecane-loaded cellulose-based composite phase change material evaporator. The evaporator is a composite phase change material evaporator based on the coupling of interfacial evaporation and phase change energy storage, solves the problems of discontinuous evaporation and low solar energy utilization rate caused by day and night alternation, has excellent light absorption performance, good heat insulation performance and sufficient water supply and the like, can be used for seawater desalination, and has the advantages of high evaporation rate, high energy conversion efficiency, salt precipitation prevention and the like.

The invention is suitable for the technical field of polyethylene pipeline materials, and provides a high-crack-resistance and high-durability medium-pressure polyethylene pipeline material and a preparation method thereof. Comprising the following components in parts by weight: 100 to 140 parts of medium-pressure polyethylene, 5 to 7 parts of tetra (octadecyloxy) phthalocyanine, 0.6 to 1.2 parts of a nucleating agent, 2 to 4 parts of nano silicon dioxide, 1.5 to 4.5 parts of montmorillonite, 1.3 to 2.7 parts of carbon black, 0.7 to 1.4 parts of a surfactant and 1.1 to 2.6 parts of a toughening agent. Preferably, the preparation method of the tetra (octadecyloxy) phthalocyanine comprises the following steps: adding tetrachloro phthalocyanine and octadecanol into a container according to a molar ratio of 1: 4, then adding a proper amount of K2CO3, taking DMF (Dimethyl Formamide) as a solvent, reacting under the protection of nitrogen, after the reaction is finished, adding ice water, filtering, and recrystallizing with methanol. The crack resistance and durability of the polyethylene pipeline material are remarkably improved, in addition, the preparation method is simple and easy to implement and easy for industrial production, and the prepared medium-pressure polyethylene pipeline material is low in cost and has a wide application prospect.

The invention relates to the technical field of super-hydrophobic anti-icing coatings, and discloses a photo-thermal super-hydrophobic anti-icing coating and a preparation method and application thereof.The photo-thermal super-hydrophobic anti-icing coating is prepared from nanocellulose, MXene, dopamine and octadecylamine, and the mass ratio of nanocellulose to MXene is (0.3-1.7): 1; the mass ratio of the dopamine to the MXene is 1: (0.3 to 1.7). A coating prepared from the photo-thermal super-hydrophobic anti-icing coating has good photo-thermal conversion capacity, has good compatibility with various substrates and can be applied to icing prevention in cold weather.

The invention discloses a microcapsule phase change cement material, which is prepared by compounding a microcapsule with phase change performance and a cement matrix, the microcapsule is of a core-shell structure, the raw materials of the shell are melamine, urea and formaldehyde, the raw material of the core material is octadecane, and Tween 80 and lauryl sodium sulfate are used as emulsifiers. The preparation method comprises the following steps: 1, preparing an MUF resin prepolymer; 2, preparing a core material O / W emulsion; 3, polymerization reaction of the microcapsules; and 4, preparing the microcapsule phase change cement material. When the composite material is used as a cement-based composite material, the melting temperature ranges from 25 DEG C to 29 DEG C, the crystallization temperature ranges from 19 DEG C to 23 DEG C, the melting enthalpy ranges from 13.47 J / g to 29.78 J / g when the mixing amount is 10%-30%, the crystallization enthalpy ranges from 12.94 J / g to 28.41 J / g, and the coating efficiency is 67.5%. The initial decomposition temperature ranges from 386.13 DEG C to 390.96 DEG C, the finishing temperature ranges from 399.49 DEG C to 406.42 DEG C, and the maximum degradation temperature ranges from 438.78 DEG C to 443.64 DEG C; the heat conductivity coefficient is 0.3216 to 0.3949, and is improved by 39.4 percent compared with that of standard cement.

The invention discloses a surface low-energy silicon dioxide shell phase change microcapsule, a moisture resistance control construction method and application thereof. Firstly, core-shell structure microcapsules with octadecane as a heat energy storage core material and silicon dioxide as a protective shell layer are prepared through an interfacial polymerization method, and phase change microcapsule powder is obtained. And then, constructing an alkylated low-energy interface layer on the surface of the microcapsule shell by utilizing an organosilane hydrolysis-condensation reaction. The phase change microcapsule treated by the method can effectively inhibit a shell layer from adsorbing free moisture in a humid environment, alleviate the phenomenon of interface instability at the initial stage of cement hydration, and improve the construction fluidity and circulating energy storage durability of a cement-based material. Meanwhile, the composite can be used as functional microparticles to be applied to building outer surface coatings, and antifouling, anti-infiltration and photo-thermal regulation and control effects are achieved. The method is simple, convenient and high in adaptability, large-scale production can be achieved, and a new solution is provided for construction of building functional materials with energy conservation, energy storage and interface stability.

The invention relates to the technical field of biochemical engineering, in particular to a method for extracting high-purity Ectoine from Ectoine mother liquor. According to the method, the Ectoine mother liquor is purified into high-purity Ectoine solid through the steps of chromatographic separation, ion exchange process, concentration and decoloration and crystallization in sequence; chromatographic separation adopts a specific filler (silica gel bonded octadecylsilane (C18) or a strong cation exchange resin filler), and separation is carried out at room temperature by controlling the sample size and the flow rate; in the ion exchange process, strong-acid cation exchange resin and strong-base anion exchange resin are connected in series to remove cation and anion impurities; concentrating and decoloring through vacuum concentration and activated carbon decoloring; and adding low-molecular alcohol for cooling crystallization, and carrying out spinning filtration and drying to obtain high-purity Ectoine solid. According to the method, the purity of Ectoin can reach 99% or above, and the method has the advantages of being low in cost, environmentally friendly and suitable for large-scale industrial production.

The invention relates to the technical field of polyurethane coatings, and mainly relates to a waterproof polyurethane coating and a preparation method thereof. The invention discloses a water-resistant polyurethane coating which is prepared from the following components in parts by weight: 50 to 60 parts of polycaprolactone diol, 10 to 20 parts of polytetrahydrofuran, 20 to 30 parts of diisocyanate monomer, 0.01 to 0.1 part of catalyst, 1 to 2 parts of chain extender, 40 to 50 parts of solvent and 1 to 4 parts of modified nano zirconium oxide, the preparation method of the modified nano-zirconia comprises the following steps: dispersing nano-zirconia in an alcohol solvent, and carrying out ultrasonic dispersion; adding the dodecyl phosphoric acid and the octadecyl phosphoric acid in a stirring state, and reacting for 1.5-2.5 hours under the condition of 38-42 DEG C; and filtering, and drying the obtained solid part to obtain the modified nano zirconium oxide. The water-resistant polyurethane coating provided by the invention has remarkable water resistance, acid and alkali resistance and wear resistance.

The invention discloses a method for detecting an N-nitroso compound in vortioxetine hydrobromide, and the N-nitroso compound is 2, 2 '-(nitroso amino) bis-acetonitrile. According to the method, a high performance liquid chromatography is adopted, an octadecyl silane bonded silica gel filler chromatographic column and an ultraviolet detector are adopted, a mobile phase A is 0.05% phosphoric acid aqueous solution, a mobile phase B is methanol, and gradient elution is adopted. The method has good specificity and sensitivity.

The invention provides a method for detecting the content of poloxamer 188. Specifically, a high performance liquid chromatography method is adopted, octadecylsilane chemically bonded silica is used as a filler, a formic acid aqueous solution is used as a mobile phase A, a mixed solution of formic acid and isopropanol or a mixed solution of acetic acid and isopropanol is used as a mobile phase B, and isocratic or gradient elution is carried out; and an evaporative light scattering detector is adopted for detection. The detection method is high in sensitivity, and the content of the poloxamer 188 can be rapidly and accurately detected with high sensitivity, so that the quality controllability of the product is ensured.

The invention relates to the technical field of analysis and detection, and discloses a construction method of a fingerprint spectrum of relevant characteristic peaks of rhizoma coptidis paste and radix rehmanniae recen, and the construction method comprises the following steps: S1, preparing a reference solution and a test solution; and S2, injecting the reference substance solution and the test solution into a high performance liquid chromatograph, adopting a chromatographic column with octadecylsilane chemically bonded silica as a filler, taking acetonitrile as a mobile phase A, taking a 0.0125 mol / L monopotassium phosphate solution as a mobile phase B, eluting according to a specified gradient program, and detecting by adopting an ultraviolet detector to obtain the fingerprint spectrum. By means of the provided construction method of the fingerprint spectrum of the relevant characteristic peaks of the coptis chinensis paste and the radix rehmanniae recen, the sequence and the mutual relation of the characteristic peaks can be indicated, and the effect of the fingerprint spectrum of the relevant characteristic peaks of the coptis chinensis paste and the radix rehmanniae recen is effectively represented.

The application provides a construction method and application of a mistletoe preparation characteristic spectrum, wherein the construction method of the mistletoe preparation characteristic spectrum adopts a high performance liquid chromatography method to obtain a characteristic spectrum of a to-be-detected substance; and specific chromatographic conditions of the high performance liquid chromatography method are provided, wherein an octadecylsilane bonded silica gel is used as a filler of a chromatographic column; a detection wavelength is 248-252 nm; methanol is used as a mobile phase A, and a 0.09-0.11% phosphoric acid aqueous solution is used as a mobile phase B, and elution is performed according to a specific gradient program. The characteristic spectrum obtained by the construction method is comprehensive in material information, and fully represents key characteristic chemical components of the mistletoe preparation and common adulterated water extraction preparations of the mistletoe; differences in chemical components of the mistletoe and the preparation thereof and different adulterants characterized by the method can realize overall quality control of the mistletoe and identification of adulterated mistletoe.

The invention relates to a method for detecting genotoxic impurities of rupatadine fumarate, which is characterized in that a phosphate buffer solution is matched with acetonitrile, a high performance liquid chromatography method is adopted, a chromatographic column is a silica gel bonded octadecylsilane column, a gradient program is adopted for elution, and the content of the rupatadine fumarate genotoxic impurities in the rupatadine fumarate genotoxic impurities in the rupatadine fumarate genotoxic impurities is detected. Effective separation between rupatadine fumarate and genotoxic impurities and between genotoxic impurities can be achieved, accurate quantitative analysis can be achieved, and the quality of drugs can be effectively controlled.

The invention belongs to the technical field of pharmaceutical analysis, and particularly relates to a method for separating and determining nafamostat mesylate SM2 and related impurities thereof. The method is a high performance liquid chromatography, and comprises the following steps: by taking octadecylsilane chemically bonded silica as a chromatographic column filler, a potassium hexafluorophosphate solution as a mobile phase A and acetonitrile as a mobile phase B, separating nafamostat mesylate SM2 and related impurities thereof through linear gradient elution; and detecting by using detection wavelengths of 200 nm to 240 nm and 250 nm to 280 nm to obtain a chromatogram, so that effective determination of the nafamostat mesylate SM2 and the related impurities thereof is realized. The method provided by the invention adopts common buffer salt as a mobile phase, and has the characteristics of short analysis time, strong specificity, high sensitivity and good reproducibility.

The invention belongs to the field of pest repellents, and particularly relates to application of n-octadecane in preparation of a pest repellent. According to the invention, n-octadecane (n-octadecane, with the CAS number of 593-45-3) is screened and identified from chemical signal substances on the body surface of the spider brachyta, and the n-octadecane has remarkable behavior regulation and control activity. A behavioral experiment proves that the pest repellent taking n-octadecane as a unique effective repelling component can remarkably induce the repelling behavior of cockroach pests such as cockroaches and periplaneta americana. The invention provides a novel, environment-friendly and efficient prevention and control product and a prevention and control method for pest prevention and control.

The invention relates to the technical field of non-ferrous metal beneficiation, in particular to a flotation reagent composition for recycling micro-fine particle copper sulfide from copper oxide acid leaching residues and a beneficiation method of the flotation reagent composition. The flotation reagent composition for recovering copper sulfide from copper oxide acid leaching residues is characterized by comprising a collecting agent, a hydrophobic agglomeration agent and a foaming agent, and the collecting agent is ethyl thioacetate; the hydrophobic agglomeration agent is prepared from octadecyl triethoxy silane and kerosene; and the foaming agent is selected from terpilenol, methyl isobutyl carbinol or sec-octanol. The ethyl thioacetate serving as a collecting agent is stable in chemical property in an acid environment, weak in gangue mineral collecting capacity and good in selectivity in the copper sulfide mineral flotation process, and therefore the grade and the recovery rate of obtained copper sulfide concentrate are higher.

The application discloses a detection method and application of a fingerprint spectrum and a mark characteristic effective component of compound tung oil for burns and a detection method of the fingerprint spectrum, and the detection method of the fingerprint spectrum comprises the following steps: preparing a sample solution and a standard control solution of the compound tung oil for burns, and adopting HPLC chromatography to construct the fingerprint spectrum of the compound tung oil for burns; the HPLC chromatography conditions for constructing the fingerprint spectrum of the compound tung oil for burns comprise the following steps: adopting an octadecyl silica water-resistant analysis column chromatographic column, adopting methanol (A) and 0.08-0.12% ammonium acetate (B) as a mobile phase, adopting a flow rate of 0.5-0.7 mL / min, and adopting a sample injection amount of 5-15 muL. The method system is reliable in results and provides a scientific screening method for quality control of the compound tung oil for burns.

The invention belongs to the technical field of desulfurizer preparation, and particularly relates to a desulfurizer for oil extraction of oil and gas fields and a preparation method thereof. The desulfurizing agent for oil extraction of the oil and gas field is prepared from the following raw materials: N-octadecyl-1, 3-propane diamine, an ionic liquid and organic copper mixture, ammonium molybdate, lysine sodium, hydroxyethylidene diphosphonic acid, polyoxyethylene sorbitan monostearate and the balance of water. According to the desulfurizing agent for oil extraction of the oil-gas field, water is used as a solvent, N-octadecyl-1, 3-propane diamine, an ionic liquid and organic copper mixture and ammonium molybdate in raw materials are used as main desulfurizing components to remove organic sulfur and inorganic sulfur, and lysine sodium, hydroxyethylidene diphosphonic acid and polyoxyethylene sorbitan monostearate are added, so that the desulfurizing agent for oil extraction of the oil-gas field is obtained. Due to the synergistic effect of the raw materials, the efficient removal of inorganic sulfur and organic sulfur in oil extraction of an oil and gas field is realized.

The invention discloses a leakproof composite phase change material and application of the leakproof composite phase change material in wide temperature range operation of a lithium battery, and belongs to the technical field of battery thermal management. Boron nitride nanosheet modified ceramic fibers are used as an internal supporting framework to enhance thermal conductivity and provide capillary constraint, and a core material is a phase change medium such as paraffin or n-octadecane; the invention further discloses a preparation method of the composite material and application of the composite material in lithium battery thermal management, the composite material solves the problems that a traditional phase change material is prone to leakage, poor in heat conduction and single in function, the battery can be rapidly heated at low temperature, heat can be efficiently absorbed and diffused at high temperature / normal temperature and high rate, and the service life of the battery is prolonged. The safe, efficient and stable operation of the lithium battery in a wide temperature range is realized, the leak-proof performance is high, the cycling stability is good, the preparation cost is controllable, and the application prospect is wide.

The invention discloses a liquid-liquid coalescence filter element material for oil dehydration, which takes glass fiber paper as a substrate and is coated with the following modified materials in percentage by mass: 1 to 5 percent of nano silicon dioxide, 2 to 10 percent of gamma-aminopropyltriethoxysilane, 2 to 10 percent of octadecyltriethoxysilane and the balance of absolute ethyl alcohol. The water contact angle of the liquid-liquid coalescence filter element material is larger than 150 degrees, and the oil contact angle is smaller than 10 degrees; the invention also discloses a preparation method which comprises the following steps: uniformly mixing the raw materials to form a modified solution, spraying the modified solution on the surface of the cured glass fiber paper, and drying to obtain the liquid-liquid coalescence filter element material. According to the invention, the nano silicon dioxide is modified by gamma-aminopropyltriethoxysilane and octadecyltriethoxysilane, so that the super-hydrophobicity and super-lipophilicity of the glass fiber paper are improved; the prepared liquid-liquid coalescence filter element material is uniform and firm in coating adhesion and suitable for the fields of oil product production, storage, transportation and the like.

The invention discloses a preparation method and application of a super-hydrophobic antifouling coating with a self-repairing function, and belongs to the technical field of modification of self-repairing super-hydrophobic coatings of textiles. The method comprises the following steps: mixing boric acid, ethanol and n-octadecyltriethoxysilane, heating and stirring to completely dissolve the boric acid to obtain a mixed solution; and dropwise adding water into the mixed solution while heating and stirring, and then standing and reacting to form a B-O-Si covalent bond, thereby obtaining the super-hydrophobic antifouling coating material. After the fabric is subjected to immersion treatment by the super-hydrophobic antifouling coating material, a good dynamic hydrophobic effect is shown, the original air permeability and moisture permeability of the fabric are hardly influenced, and compared with the original fabric, the air permeability is reduced by 1.9-6.6%, and the moisture permeability is reduced by 3.2-4.8%; after the super-hydrophobic antifouling coating fabric is worn and damaged by washing, the super-hydrophobic performance can be recovered under the condition of standing for 180 minutes or heating at 110 DEG C for 30 minutes.

The present invention belongs to the technical field of lyocell fibers, and specifically relates to high-enthalpy phase-change temperature-regulating lyocell fibers and a preparation method thereof. The preparation method of the high-enthalpy phase-change temperature-regulating lyocell fibers comprises the following steps: using a mixture of n-octadecane, n-nonadecane, and n-heneicosane as a capsule core material, polyurethane as an inner capsule wall, and a product of gelatin and gum arabic as an outer capsule wall to prepare phase-change temperature-regulating microcapsules; adding cellulose pulp to a cellulose solvent to prepare a cellulose spinning solution; adding phase-change temperature-regulating microcapsules to an aqueous solution of a low-concentration cellulose solvent to prepare a phase-change temperature-regulating microcapsule dispersion system; and mixing the cellulose spinning solution and the phase-change temperature-regulating microcapsule dispersion system to prepare high-enthalpy phase-change temperature-regulating lyocell fibers. The high-enthalpy phase-change temperature-regulating lyocell fibers prepared by the present invention have good dispersibility and compatibility of the phase-change temperature-regulating microcapsules contained therein in the fibers, and have good phase-change temperature-regulating function and toughness.

The application discloses an environment-friendly fluorine-free super-hydrophobic coating material and a preparation method thereof, and belongs to the technical field of super-hydrophobic coating materials. The preparation method comprises the following steps: mixing hyperbranched polyurethane, ethyl acetate and propylene glycol methyl ether acetate for 10-20 min, then adding polydimethylsiloxane and octadecyl isocyanate to carry out mixing reaction for 60-80 min, then adding multistage microspheres to carry out ultrasonic treatment for 15-30 min, and then adding Isopar G, isophorone diisocyanate, silane coupling agent KH-560, dibutyl tin dilaurate and triethylenediamine to carry out stirring and dispersion for 30-50 min, so as to obtain the environment-friendly fluorine-free super-hydrophobic coating material. The environment-friendly fluorine-free super-hydrophobic coating material prepared by the application has good super-hydrophobicity, self-repairing function and wear resistance.