321 results about "Lauric acid" patented technology

A method for preparing a silver powder, comprising: subjecting a first silver salt, a first dispersing agent and a first reducing agent to a first treatment, so as to obtain silver crystal nucleuses; and subjecting the silver crystal nucleus, a second silver salt, a second dispersing agent, a second reducing agent and a modifying agent to a second treatment, so as to obtain a silver powder, wherein the modifying agent comprises lauric acid, decanoic acid and undecanoic acid. The silver powder prepared by means of the method has good dispersity and wettability, a narrow particle size distribution, a small particle size and high sintering activity, and is not prone to agglomeration in a conductive silver paste, thereby enabling the conductive silver paste to have a high solid content and endowing the conductive silver paste with good conductivity. The present invention further relates to a silver powder, a conductive silver paste, an electronic device and electric equipment.

The invention relates to a fabric flavor enhancer containing ester-based quaternary ammonium salt and a preparation method thereof. The fabric flavor enhancer containing ester-based quaternary ammonium salt comprises the following components: polyethylene glycol, an ester-based quaternary ammonium salt solution, modified silicon dioxide, polyquaternary ammonium salt and the like. The modified silicon dioxide is prepared by the following steps: carrying out a blending reaction on hydroxylated silicon dioxide and KH570 to obtain an intermediate product, then carrying out a blending reaction on triethanolamine, acrylic acid, lauric acid and sodium bromoacetate to obtain an intermediate product 2, and finally polymerizing the intermediate product, the intermediate product 2 and hydroxyethyl methylacrylate. Long alkyl chains, quaternary ammonium cations and hydroxyl are introduced into the modified silicon dioxide, so that organic matters on the surface of the modified silicon dioxide form a net-shaped structure; wherein the long alkyl chain can improve the compatibility; quaternary ammonium cations can neutralize charges and make the fabric softer and more fluffy; hydroxyl can adsorb essence, the antistatic performance and the like can be improved, and in addition, silicon dioxide and a net-shaped structure can further enhance the fragrance of the fabric.

The invention relates to the technical field of high polymer materials, and particularly discloses a flame-retardant heat-conducting silica gel insulating coating and a preparation method thereof. The invention discloses a flame-retardant heat-conducting silica gel insulating coating. Comprising the following components: polydimethylsiloxane, aluminum hydroxide, modified nano aluminum oxide, a phosphorus-nitrogen flame retardant, silicon dioxide, methyltris (methylethylketoxime) silane, vinyltris (methylethylketoxime) silane, dibutyltin dilaurate, a diluent, amino propyl triethoxy silane, propyl trimethoxy silane and ethyl aminopropyl trimethoxy silane. And the polydimethylsiloxane is formed by compounding polydimethylsiloxane with the viscosity of 1,500 cp and polydimethylsiloxane with the viscosity of 20,000 cp. According to the invention, by finely blending the proportion of various functional components, especially the optimal combination of polydimethylsiloxane, modified nano aluminum oxide, the flame retardant and the filler, the flame retardance and thermal conductivity of the coating are effectively improved, and meanwhile, good insulativity and mechanical properties are ensured.

The invention provides a preparation method of a low-sulfur diesel oil anti-wear agent, and belongs to the technical field of carbon-containing fuel processing, and the preparation method comprises the following steps: adding sodium oleate, tetrabutylammonium bromide and xylene into a three-necked flask, uniformly stirring and mixing, heating, dropwise adding 3-chloro-1, 2-propylene glycol, continuously heating until reflux, centrifuging, and carrying out rotary evaporation to obtain glyceryl monooleate; the preparation method comprises the following steps: dispersing NCC in xylene, adding lauric acid and p-toluenesulfonic acid, and carrying out heating, reflux reaction, cooling, centrifugation, washing and drying under the protection of an inert atmosphere to obtain modified NCC; the preparation method comprises the following steps: heating and melting glyceryl monooleate, adding silane modified silicon dioxide, stirring, carrying out ultrasonic treatment, cooling to obtain a modified nano-composite, adding the modified NCC and a stabilizer, stirring, and carrying out ultrasonic uniform mixing to obtain the low-sulfur diesel oil anti-wear agent. The diesel oil anti-wear agent provided by the invention can improve the wear resistance of diesel oil under the condition that the addition amount is relatively low, and improve the low-temperature fluidity and demulsifying performance.

The invention belongs to the technical field of metal material plating, and particularly relates to a connector surface composite coating and a preparation process thereof, and the preparation process comprises the following steps: adding modified carbon black and sodium molybdate into deionized water, stirring to obtain a corrosion inhibition material, and mixing with modified zinc oxide to obtain a mixed filler; the preparation method comprises the following steps: adding dibutyltin dilaurate and toluene diisocynate into polypropylene glycol to obtain a core material; adding hexadecyl trimethyl ammonium bromide and the mixed filler into a 93-96 wt% ethanol solution, adding the core material for emulsification, adding an isophorone diisocyanate solution, and stirring to obtain a microcapsule; nickel sulfate hexahydrate, nickel chloride hexahydrate, sodium citrate, boric acid, a surface dispersant, a sodium hydroxide solution and microcapsules are added into deionized water to be mixed, and an electroplating solution is obtained; and putting the connector into the electroplating solution for electroplating to obtain the composite coating. The expansion of pitting corrosion can be inhibited, and the long-term use reliability and stability of the connector in a marine environment are improved.

The invention provides a high-strength fire-resistant cable and a preparation method thereof, and belongs to the technical field of cables, and the preparation method of the high-strength fire-resistant cable comprises the following steps: reacting nano-hydroxyapatite with 10-(2-methacryloyloxy) monodecyl phosphate in ethanol, and drying to obtain modified hydroxyapatite; ethylene-vinyl acetate copolymer, magnesium hydroxide, zinc borate, zinc stannate, polyethylene wax, vinyltrimethoxysilane, 2-hydroxy-2-methyl propiophenone and modified hydroxyapatite are mixed, melt-extruded and illuminated at constant temperature, and a sheath layer is obtained; mixing tetraethoxysilane, ethanol, dibutyltin dilaurate, fumed silica, phlogopite paper and glass fibers, heating and aging, and cutting to obtain a fireproof layer; the insulating layer, the fireproof layer and the sheath layer are sequentially coated on the conductor to prepare the high-strength fireproof cable, and the cable prepared by the invention has good mechanical property, electrical insulating property and fireproof property.

The present invention relates to a confectionery product comprising 20% to 70% by weight of a sweetener; and 20% to 70% by weight of a plant-based fat phase; wherein the plant-based fat phase has from 1.0% to 10.0% by weight of total lauric acid (C12: 0) and myristic acid (C14: 0); and from 20.0% to 70.0% by weight of total palmitic acid (C16: 0) and stearic acid (C18: 0); the percentage of acid is an acid bound as an acyl group in the glyceride of the plant-based fat phase and based on the total weight of C8 to C24 fatty acids; total palmitic acid (C16: 0) and stearic acid (C18: 0) in the second position of the triglycerides, which accounts for at least 1.0% of the percentage of total palmitic acid (C16: 0) and stearic acid (C18: 0) in the triglycerides of the plant-based fat phase (Sn-2 total palmitic acid and stearic acid%); up to 10.0% by weight of a total CN32 triglyceride, CN34 triglyceride, CN36 triglyceride, CN38 triglyceride, and CN40 triglyceride; the plant-based fat phase is based on total triglycerides present in the plant-based fat phase. The invention also relates to a method for preparing said confectionery product.

The invention provides a traditional Chinese medicine composition for improving spleen and stomach health and a preparation method thereof. The traditional Chinese medicine composition is prepared from the following raw materials in parts by weight: 25 to 30 parts of rhizoma dioscoreae, 15 to 20 parts of rhizoma atractylodis macrocephalae, 8 to 15 parts of fructus aurantii, 10 to 15 parts of red dates, 8 to 12 parts of liquorice root, 10 to 15 parts of inulin, 6 to 10 parts of fructus amomi and 5 to 8 parts of cassia twig. The lauric acid modified fenugreek gum (LA-FG) is used as an emulsifier and an immobilized enzyme carrier to construct a water-oil two-phase enzymolysis system, so that the content of effective active ingredients in the traditional Chinese medicine composition, the product stability and the bioavailability are remarkably improved. In addition, the traditional Chinese medicine composition can effectively improve the gastric emptying rate and the small intestine propulsion rate, the level of motilin and anti-inflammatory factors IL-10 is improved, and the effect of improving spleen and stomach health is achieved through multi-target-point synergism. The method successfully breaks through double limitations of a traditional process and an existing scheme, effectively considers volatile oil protection, efficient enzymatic conversion and system stability, and provides a new path for promoting technical upgrading of the traditional Chinese medicine industry.

The application provides a low pour point nonionic surfactant and a preparation method thereof, which is composed of the following raw materials in parts by weight: C13 isomeric fatty alcohol polyoxyethylene ether 18-30 parts, reverse EO / PO block copolymer 10-20 parts, sodium diisooctyl sulfosuccinate 1-7 parts, sodium dodecyl sulfonate 1-5 parts, glyceryl laurate 1-5 parts, isopropyl alcohol 5-10 parts, and propylene glycol 1-5 parts; the formula is constructed based on a nonionic surfactant as a main body, ion surfactants and additives are introduced, and the system is optimized, so that a low pour point nonionic surfactant with excellent adsorption capacity and decontamination capacity is obtained.

The invention relates to the field of animal nutrition additives, and particularly discloses an animal additive based on probiotic synergistic fermentation sea buckthorn residue and hermetia illucens protein and a preparation method thereof, the animal additive comprises the following components by mass: 5%-10% of a filling auxiliary material, and the balance of a fermentation composite product; the sea-buckthorn residues and the hermetia illucens larvae can be fermented to form a double-substrate fermentation product, so that the double-substrate fermentation product has a synergistic nutrition effect, and can be used for remarkably promoting the weight gain condition of animals, improving spleen and thymus indexes and increasing serum IgG and IgM; the hermetia illucens protein is rich in lauric acid, antibacterial peptide and high-quality animal protein, so that the non-specific immunity and the anti-stress capability of an organism are enhanced, and the infection risk in the breeding process is reduced; the low-value sea-buckthorn residues and the hermetia illucens larvae are upgraded and converted into high-value feeding resources in a biological fermentation mode, the environmental pressure of processing by-products is relieved, the additional value of raw materials is increased, and the method conforms to resource circulation and environmental protection policy guidance.

The present application relates to the technical field of energy storage equipment protection, and particularly relates to a phase change protective coating for an energy storage container and a preparation method thereof, which comprises, by total mass 100 parts, epoxy modified polyurethane 40-50 parts, lauric acid 10-15 parts, paraffin 5-8 parts, GPTMS modified boron nitride 3-6 parts, VTES modified nano-silicon dioxide 2-5 parts, leveling agent 0.5-0.7 parts, defoaming agent 0.3-0.5 parts, curing agent 7-9 parts, and diluent 10.8-17 parts; the GPTMS modified boron nitride is obtained by modifying 50 nm boron nitride with GPTMS and has a modification degree of 85%, and the VTES modified nano-silicon dioxide is obtained by modifying 30 nm nano-silicon dioxide with VTES and has a modification degree of 80%. The present application uses specific composite phase change materials and cooperates with a pretreatment process, so that the phase change components are uniformly dispersed, the problems of leakage and agglomeration are avoided, the stable phase change function of the coating is ensured, the environmental temperature fluctuation can be effectively smoothed, and stable operating temperature conditions are provided for the energy storage equipment.

The invention relates to a UV-LED blue paint for protecting a power battery shell, a preparation method and a coating applied by the UV-LED blue paint, and belongs to the technical field of paints. The UV-LED blue coating is prepared from the following components in parts by weight: 5 to 15 parts of a polybutadiene modified acrylate oligomer, 20 to 40 parts of a bisphenol A epoxy acrylate oligomer, 35 to 50 parts of a monofunctional reactive diluent, 5 to 15 parts of a bifunctional reactive diluent, 3 to 10 parts of a multifunctional reactive diluent, 4 to 7 parts of a photoinitiator, 0.6 to 2.2 parts of an auxiliary agent and 1 to 3 parts of blue color paste, the monofunctional reactive diluent is prepared from the following components in parts by weight: 30 to 40 parts of isobornyl-containing acrylate and 5 to 10 parts of lauric acid acrylate. A blue coating formed by the blue coating has good adhesive force, excellent electrolyte resistance and boiling resistance and low viscosity, so that the blue coating can be subjected to mass production through spraying, the curing speed is high, and the production efficiency is improved.

The embodiment of the application discloses a preparation method of a target temperature-sensitive drug-loaded composite microsphere based on attapulgite, which comprises the following steps: carrying out purification treatment on original attapulgite based on an aqueous solution of inorganic strong acid to obtain purified attapulgite; mixing the purified attapulgite, gypenoside, inulin and folic acid to obtain a mixture, and carrying out mixing treatment on the mixture based on deionized water to obtain a composite microsphere suspension; conveying the composite microsphere suspension into a spray dryer to carry out granulation to obtain primary drug-loaded composite microspheres; adopting a melt impregnation method to coat lauric acid on the surface and pores of the primary drug-loaded composite microspheres, and cooling the primary drug-loaded composite microspheres coated with lauric acid to room temperature to obtain the target temperature-sensitive drug-loaded composite microspheres. The application can not only realize temperature change-based on-off type control release of drugs, significantly improve the targeting and treatment accuracy of drugs, but also reduce the systemic toxic side effects of chemotherapy from the source, and realize efficient and low-toxicity synergistic treatment.

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.

The invention relates to the technical field of traditional Chinese medicine pharmacy, and discloses a preparation method of a traditional Chinese medicine external preparation for arthralgia based on blood circulation promoting and blood stasis removing, which comprises the following steps: extracting ferulic acid from angelica sinensis and ligusticum wallichii by adopting a supercritical CO2 fluid extraction process; extracting safflower, frankincense and other medicinal materials to obtain a synergistic active ingredient extract; the ferulic acid is used as a first hydrogen bond donor to react with lauric acid used as a temperature-sensitive phase change hydrogen bond donor and choline chloride used as a hydrogen bond acceptor, and the temperature-sensitive bioactive ternary eutectic solvent is prepared; loading the synergistic active ingredient extract in the solvent at low temperature to form a medicine mother solution; and finally, mixing the medicine mother liquor with auxiliary materials to prepare the external preparation. Ferulic acid in medicinal materials serves as a structural unit of a functional solvent, the solvent prepared under the mild condition has biological activity and temperature-sensitive phase change characteristics, a medicine storage cavern can be formed on the skin surface in situ, long-acting slow release and efficient transdermal absorption of active ingredients are achieved, and the curative effect and safety of a preparation are improved.

The invention discloses an organic intumescent rubber composition for a composite metal fireproof door and a preparation method of the organic intumescent rubber composition, and belongs to the technical field of preparation of fireproof materials. The preparation method comprises the following steps: plastifying a rubber master batch mixture at 50-60 DEG C for 5-9 minutes, then adding a vulcanizing agent, a vulcanization accelerator, lauric acid and an anti-aging agent, mixing at 110-120 DEG C for 10-14 minutes, and finally vulcanizing in a vulcanizing machine at 150-160 DEG C and 12 MPa for 18-20 minutes to obtain the organic intumescent rubber composition. The rubber master batch mixture, the vulcanizing agent, the vulcanization accelerator, the lauric acid and the anti-aging agent are mixed and then subjected to vulcanization treatment to obtain the organic intumescent rubber composition with good mechanical properties and flame retardance.

The object of the present invention is to provide a gummy candy that has both a resilient texture and a smooth, melt-in-your-mouth quality like chocolate, and that has a good chocolate-like flavor. [Solution] A gummy candy containing 2.0% by mass or more of a gelling agent, cocoa content, and oil and fat, wherein the ratio of the solid fat content of the oil and fat at 20°C to the solid fat content of the oil and fat at 35°C is 3 or more, and preferably, the oil and fat contains random transesterified oil and fat (A): the content of lauric acid residues in the constituent fatty acid residues is 5 to 50% by mass.

The present application relates to the technical field of biochar preparation, and discloses an organic acid modified biochar as well as a preparation method and application thereof.The preparation method of the organic acid modified biochar comprises the following steps: 1) performing calcination modification on biochar to obtain primary modified biochar; 2) placing the primary modified biochar prepared in step 1) in hydrochloric acid to perform impregnation modification on the primary modified biochar, and obtaining secondary modified biochar; and 3) mixing lauric acid, octadecylamine and the secondary modified biochar prepared in step 2), heating, and performing impregnation modification to obtain the organic acid modified biochar.The organic acid modified biochar provided by the present application has a permeability coefficient of 0.54*10 ‑8 m / s, has relatively optimal permeability resistance, and can be applied to building engineering permeability resistance.

The invention provides new application of lauric acid, and researches on the inhibiting effect of lauric acid on a cardiac voltage gated sodium channel Nav1.5 and the action mode of lauric acid in electrophysiological conduction prove that natural polysaturated fatty acid lauric acid is a potential Nav1.5 sodium channel inhibitor for the first time. Electrophysiological characterization shows that lauric acid is the most effective monomer in natural polysaturated fatty acid screened for inhibiting Nav1.5, and the IC50 value is 27.40 + / -12.78 mu M.

The invention relates to a multilayer release film and a preparation method thereof, and relates to the technical field of release film preparation. The preparation method comprises the following steps: dispersing epoxy acrylate, polyethylene glycol diacrylate and hydroxyethyl acrylate in a solvent, adding a composite photoinitiator, carrying out a reaction in a dark place, adding isophorone diisocyanate to obtain first slurry, coating the surface of a base material, and carrying out an illumination reaction to obtain a bottom layer; mixing polyvinyl alcohol and Ti3C2F to obtain a mixed solution, separating to take a solid phase, dispersing the solid phase in a solvent, mixing the solid phase with a polyamide acid solution to obtain second slurry, and coating the surface of the bottom layer to obtain a transition interlayer; dispersing polyurethane acrylate, polytetrahydrofuran acrylate, allyl laurate and 1-hydroxycyclohexyl phenyl ketone in a solvent, adding hydrogenated diphenylmethane diisocyanate to obtain third slurry, and coating the surface of the transition interlayer with the third slurry to form a surface layer to obtain the multi-layer release film. According to the invention, polyvinyl alcohol-Ti3C2F is introduced to form a physical barrier, moisture permeation is hindered, the moisture resistance of the release film in a humid environment is improved, and the damage of water to the structure and performance of the film is reduced.

A use of extracts of roselle seeds for preparing a composition of antioxidant, anti-inflammation, anti-UVB, anti-allergy, whitening, moisturizing, and anti-wrinkle, wherein the extracts of the roselle seeds comprise lauric, palmitic, linoleic, oleic, or stearic acids; and a method for preparing the extracts of the roselle seeds comprises steps of: steeping of: extracting a weight ratio of the 12:1 to 20:1 roselle seeds and an ethanol solution with a concentration of 75 to 95%; and steeping the roselle seeds in the ethanol solution to obtain a suspension; and extraction of: the suspension being engaged in an extraction of a continuous and rapid oscillation with an ultrasonic energy with a total energy of 200 to 500W, wherein 1 to 3 hours of the oscillation is one cycle, and a total number of 3 to 5 cycles is lasted, in order to obtain roselle seed crude extracts.

This invention relates to the field of extraction technology and proposes a green method for extracting glycyrrhizic acid, comprising the following steps: S1, mixing licorice with a first solvent, extracting, separating, and obtaining a solid pretreated material; S2, mixing the solid pretreated material with a second solvent, extracting, separating, and obtaining an extract; S3, concentrating the extract, adding it to an aqueous two-phase extraction system, stirring, allowing it to stand and separate phases, obtaining an upper phase solution; S4, adding a third solvent to the upper phase solution, adjusting the pH to alkaline, separating phases, obtaining an aqueous phase solution, adjusting the pH of the aqueous phase solution to acidic, separating, obtaining a solid, drying the solid, and obtaining glycyrrhizic acid; the aqueous two-phase extraction agent in the system includes polyoxyethylene laurate solution and dipotassium hydrogen citrate solution. This technical solution solves the problem of insufficient yield and purity of glycyrrhizic acid in the extraction of glycyrrhizic acid from licorice in related technologies.

The invention discloses a process for directly purifying quartz sand through gravity-flotation combined separation, and belongs to the technical field of deep processing of non-metallic ores. An existing acid leaching-roasting method is large in pollution and high in cost, and impurities such as Fe, Ti and Al are difficult to remove at the same time through single reselection or flotation. The method comprises the following steps: firstly, crushing raw ore, performing rod milling, and classifying by a cyclone until d90 is equal to 0.15 mm; then combined reselection is conducted through a two-section table concentrator and a centrifugal machine, pre-enriched concentrate with SiO2 larger than or equal to 99.2% is obtained, and the heavy mineral removal rate is larger than or equal to 65%; then, under different pH conditions, lauric acid, a neutral oil emulsified collecting agent and a mixed amine collecting agent are used for collecting mica and feldspar in a segmented mode, so that the grade of SiO2 is increased to be larger than or equal to 99.9%, and Al2O3 and Fe2O3 are reduced to be larger than or equal to 85% and larger than or equal to 70% relative to gravity concentrate; finally, deionized water washing and vacuum drying are conducted, and the high-purity quartz sand is obtained. The whole process is free of hydrofluoric acid and high-temperature roasting, the recovery rate of SiO2 with the size fraction of-0.6 + 0.1 mm is increased to 93-95%, product indexes are stable, equipment is conventional, and industrial popularization is easy.

The invention provides antimicrobial composition comprising (a) a first active ingredient, wherein in the first active ingredient is selected from the group consisting of petroleum jelly, EpiCeram® emulsion, and / or glycerin, and (b) a second active ingredient selected from the group consisting of 1-octanoyl-rac-glycerol, 1-decanoyl-rac-glycerol, glycerol monolaurate (GML), rac-glycerol 1-myrstate, glycerol monocaprate, glycerol monocaprylate, glycerol monomyristate, or reutericyclin, wherein the second active ingredient is present at a concentration of 10 μg / ml to 100 mg / ml in the composition. The compositions are useful as antimicrobial agents.

The present invention relates to a candle wax composition comprising one or more lauric fats and a plant-based oil and / or a plant-based wax. Furthermore, the present invention relates to a method for producing a candle wax composition, and the use of such a candle wax composition for reducing blooming formation and improving adhesion of a candle wax composition to glass.

The invention relates to the technical field of road engineering construction, and particularly discloses a composite pavement phase change material as well as a preparation method and application thereof. The composite pavement phase-change material comprises a cellulose aerogel base material, a phase-change core material infiltrating pores of the base material and an outer coating layer material, wherein the phase change core material comprises expanded graphite, lauric acid / myristic acid eutectic and polyethylene glycol; and the outer coating layer is made of a mixture of petroleum resin and maleic anhydride modified asphalt. The composite pavement phase change material can play a remarkable temperature control role in an asphalt pavement, improves the high and low temperature performance of an asphalt pavement mixture, can effectively prolong the service life of the pavement, and effectively makes up for the defects in the prior art.

The invention discloses a bio-enzyme preparation for catalytic degradation of grease as well as a preparation method and application thereof, and belongs to the technical field of bio-enzymes. The gel carrier is formed by cross-linking a chitosan-lauric acid-dopamine conjugate and Fe < 3 + > ions through covalent coupling; the bonding adaptive compound enzyme is a mixed enzyme of which the surface is grafted with a catechol group through an N-hydroxysuccinimide-dopamine ester modifier; the technical bottleneck that efficient catalysis, firm fixation, convenient recovery and long-acting stability of an industrial cleaning enzyme preparation are difficult to consider at the same time is solved, and the prepared biological enzyme preparation has the high-activity recovery rate, excellent recycling stability, intelligent separation and recovery characteristics and efficient broad-spectrum cleaning capacity; and the method has remarkable industrial application advantages and market competitiveness.

The application discloses a temperature-sensitive phase change one-way water guide paste dry base material and a preparation method thereof, and relates to the technical fields of skin care patches and flexible drug-loaded base materials. The method comprises the following steps: step 1, uniformly spraying a polylactic acid solution on one side of a non-woven fabric base material to obtain a hydrophobic closed layer after volatilizing the solvent; step 2, preparing a mixture containing lauric acid, myristic acid and Tween 20, heating and melting the mixture into a transparent liquid to obtain an oil phase of a temperature-sensitive layer, weighing a set amount of an efficacy component, stirring the efficacy component in a beaker containing a high-molecular-weight hydrogel solution to obtain an aqueous phase of the temperature-sensitive layer; step 3, stirring the oil phase of the temperature-sensitive layer into the aqueous phase of the temperature-sensitive layer until uniform to prepare a temperature-sensitive phase change microemulsion; step 4, quantitatively coating the temperature-sensitive phase change microemulsion on the other side of the non-woven fabric base material to obtain a hydrophilic layer of the temperature-sensitive layer; and step 5, low-temperature dehydration and drying to obtain the temperature-sensitive phase change one-way water guide paste dry base material. The binary eutectic system of lauric acid and myristic acid is used to keep the base material in a physical closed state at room temperature, when the microenvironment of human skin is heated to about 35 DEG C-37 DEG C, the phase change lipid is melted to realize the temperature-controlled intelligent release of the efficacy component; meanwhile, the one-way water guide structure is constructed in combination with the hydrophobic layer, the transdermal absorption effect is improved, and the dry entity is beneficial to non-preserved packaging, environmental protection and weight reduction.

The invention belongs to the technical field of graphene antibacterial materials, and particularly relates to a graphene antibacterial material and a preparation method and application thereof. The chitosan, the lysine-lauric acid conjugate, the tea tree essential oil and other components are synergistically antibacterial through different mechanisms of physical destruction, chemical inhibition and the like, and have efficient inhibition effects on gram-positive bacteria, gram-negative bacteria and fungi, so that the use amount of a single antibacterial agent can be remarkably reduced, and the risk of drug resistance of bacteria is reduced. The graphene oxide is reduced into reduced graphene oxide through hydrazine hydrate steam, so that the potential cytotoxicity of the graphene oxide is reduced, and meanwhile, the mechanical strength and chemical stability of the material are enhanced; and the stable performance of the material is ensured by controlling key indexes such as SiO2 shell layer protection, freeze drying, freezing rate and the like.

The application discloses a preparation method of an interface treatment agent for a steel structure, and comprises the following steps: adding graphene powder and boron nitride powder into a mixed solution composed of ethanol and water, performing ultrasonic treatment, then centrifuging the mixed solution, collecting supernatant, drying the supernatant, and obtaining graphene nanosheet / boron nitride nanosheet composite material; mixing and stirring polydimethylsiloxane, dibutyltin dilaurate and the graphene nanosheet / boron nitride nanosheet composite material, adding polyacrylate emulsion, and performing stirring treatment to obtain modified polyacrylate emulsion; mixing cement, redispersible latex powder, river sand, defoaming agent, triethanolamine and hydroxyethyl methyl cellulose as dry material components; and taking the modified polyacrylate emulsion as a liquid component. The interface treatment agent can not only effectively improve the interface performance between the steel structure and mortar, but also improve the corrosion resistance and weather resistance of the surface of the steel structure.