118 results about "N-hexadecane" patented technology

The invention discloses a phase change micro-capsule for clothing thermoregulation as well as a preparation method and application thereof. The phase change micro-capsule for clothing thermoregulation comprises a core material and a wall material, wherein the core material is a mixture of n-octadecane and n-hexadecane, and the molar ratio between n-octadecane and n-hexadecane is (3 : 1)-(24 : 1); the wall material is methyl methacrylate; the phase change micro-capsule is applied to preparation of a clothing thermoregulation material. The phase change micro-capsule is stable in performance, non-toxic, non-corrosive and low in cost, can not cause super-cooling and super-heating phenomenon in use, has a melting and solidification temperature range just in the temperature range in which a human body can feel comfortable, is uniform in particle size distribution and appropriate in melting heat and solidification heat, meets the flexibility of finished fabrics in a later period, has a relatively large heat storage effect, and is suitable for performing thermoregulation on clothing.

The invention relates to a preparation method of strawberry-type polystyrene-silicon dioxide nanocomposite microspheres. The preparation method comprises the following steps: in a nitrogen atmosphere, mixing methacryloyloxyethyl trimethyl ammonium chloride, octaphenyl polyoxyethyiene and deionized water to obtain a water-phase mixture; dissolving azodiisobutyronitrile into styrene and n-hexadecane through ultrasonic wave to obtain an oil-phase mixture; dropping the oil-phase mixture into the water-phase mixture by using a constant-pressure dropping funnel to obtain mixed liquid; performing ultrasonic treatment on the mixed liquid under an ice-water mixed bath condition to obtain miniemulsion; dropwise adding silicon dioxide nanosol into the miniemulsion, and heating to obtain milky dispersion liquid; collecting and cooling the dispersion liquid, and centrifugating and dispersing until no free SiO2 particles exist under a transmission electron microscope, so as to obtain the strawberry-type polystyrene-silicon dioxide nanocomposite microspheres finally. The preparation method is simple and relatively low in cost and the SiO2 cladding rate is relatively high.

The invention relates to the field of application of microbes in environmental pollutant degradation, particularly a pseudomonad strain and application thereof in degrading petroleum pollutants. The pseudomonad strain (Pseudomonas sp. LKY-5) is screened from petroleum polluted soil in Shengli Oil Field in China, and the collection number is CCTCC NO:M2015448. The screened Pseudomonas sp. LKY-5 can effectively degrade sulfur-containing heterocyclic aromatics, such as dibenzothiophene, benzothiophene, alkyl dibenzothiophene, 4,6-dimethyl dibenzothiophene, 2,4,6-trimethyl dibenzothiophene and the like. Meanwhile, the Pseudomonas sp. LKY-5 can degrade many other pollutants in crude oil, such as n-hexadecane, phenanthrene, pyrene, carbazole and the like.

The invention particularly relates to a microbial composite functional bacterial agent for treating coking wastewater and a preparation method thereof. According to the technical scheme, the microbial composite functional bacterial agent comprises the following microbes: 15-20wt% of n-hexadecane degrading bacteria, 20-30wt% of phenol degrading bacteria, 10-15wt% of pyridine degrading bacteria, 8-12wt% of chinoline degrading bacteria, 5-10wt% of carbazole degrading bacteria, 15-20wt% of naphthalene degrading bacteria and 8-12wt% of anthracene degrading bacteria. The microbial composite functional bacterial agent has the characteristics that: the composite functional bacterial agent prepared from artificially bred functional strains is added to an original biochemical treatment device, thus the removing capability of refractory organic matters in the coking wastewater is greatly improved and the contents of COD (chemical oxygen demand) and NH3-N in the coking biochemical effluent can both reach national first-level emission standard. The microbial composite functional bacterial agent has strong environment adaptability, good cooperativity, and broad application prospects in bioaugmentation of coking wastewater.

The invention discloses a solid-liquid phase change heat exchange working medium for power generation by oceanic thermal energy, wherein a ternary solid-liquid phase change heat exchange working medium matrix mixing material is prepared by mixing n-pentadecane (C15H32), n-hexadecane (C16H34) and n-hexadecane (C17H36) at a weight ratio of 6:60:34, and a modifying material with high-thermal conductivity, namely expanded graphite, is added into the mixed material so as to intensify the heat conductive performance. A dispersant, namely organic bentonite, is added into and the dispersion stability of the organic bentonite is improved by ultrasonic oscillation. The solid-liquid phase change temperature range of the solid-liquid phase change heat exchange working medium disclosed by the invention is 14.5-17.5 DEG C, the phase change potential heat value of the working medium is about 212.1kJ/kg and the volume expansion ratio of the working medium is about 8.5%. The material serving as the solid-liquid phase change heat exchange working medium for power generation by oceanic thermal energy can satisfy the basic requirements on solid-liquid phase change heat exchange working medium for power generation by oceanic thermal energy.

The invention discloses a beauveria bassiana microcapsule formulation which is prepared by taking suspension prepared from beauveria bassiana conidia, kaolin and water as a capsule core, taking sodium alginate as a capsule wall, dispersing in a dispersing agent of n-hexadecane, corn oil and lecithin with different proportions, crosslinking through calcium ions, and solidifying microcapsules to enveloped fine particles with partical diameter being smaller than 100 Mu m. In the germination process of the beauveria bassiana conidia, a germ tube can perforate through the envelop of the capsule wall. The microcapsule formulation is also added with a conidium germination nutrient solution which increases the germination percentage and the germination speed of the conidia. The beauveria bassiana microcapsule formulation can effectively prevent the influences bad environments such as external ultraviolet rays and drying from the conidia, achieves high germination percentage under the influences of the same temperature, humidity and ultraviolet rays, and has good control effect to agriculture and forestry pests; and meanwhile the beauveria bassiana microcapsule formulation has simple production process and is easy for mass production.

The invention discloses an alkane degrading bacterium and an application thereof. The alkane degrading bacterium C20 provided by the invention belongs to Tsukamurellasp. The alkane degrading bacterium is preserved in China Center for Type Culture Collection on 23rd, March, 2012; the preservation number is CCTCC NO: M2012089; the GenBank accession number of the strain 16SrDNA is JQ806393. The alkane degrading bacterium is a gram-positive bacterium; the bacterial colony is chrysanthemum yellow, has regular edge, is round, has drying surface and raised centre; the thallus is in short-rod shape, is arranged in a chain shape and has no capsule under observation of a microscope. The degradation rate of the alkane degrading bacterium for 1000mg/L of n-hexadecane in 48h is more than 98%; medium-long-chain alkane (C12-C24) in the diesel can effectively degraded, and the alkane degrading bacterium metabolizes to produce a bio-emulsifier for accelerating oil to dissolve. The alkane degrading bacterium can be applied in biological strengthening treatment and repairing of refinery waste water, petroleum-polluted water and soil and has good prospect.

The invention relates to a new method for synthesizing and purifying n-eicosane, comprising the following steps: (1) mixing bromo-n-butane and bromo-n-hexadecane; (2) after mixing petroleum ether and mixed liquor, adding sodium to carry out reflux reaction for 1-2h; (3) after dropwise adding absolute ethanol and water, separating organic phase and rinsing organic phase until organic phase is neutral; (4) distilling and collecting distillate at 320-360 DEG C, after washing the distillate until organic phase is colorless or light yellow, rinsing organic phase until organic phase is neutral; and (5) after drying and filtering the organic phase, absorbing, distilling at reduced pressure and collecting the intermediate n-distillate, namely the n-eicosane product. The raw materials adopted in the invention are sufficiently supplied in the market, thus effectively solving the problem that the yield is affected by tension supply of the raw materials; the requirements for process conditions and production equipment are low, thus reducing the investment in equipment and saving the fund; meanwhile, the product quality can be evidently improved while increasing the yield, thus further increasing the economic benefits.

The invention provides a hierarchically pored SAPO-11 molecular sieve and a solid-phase synthesis method. The solid-phase synthesis method comprises the steps that a solid silicon source, an aluminium source, a mesoporous template and a phosphorus source are mixed, ground and subjected to a crystallization reaction at 140-220 DEG C for 12-72 h, a product is dried centrifugally and roasted, and the hierarchically pored SAPO-11 molecular sieve is obtained after the template is removed. The conversion rate of a hydroisomerization reaction of n-hexadecane by the prepared hierarchically pored SAPO-11 molecular sieve is 83.5%, and the stereoselectivity is 82.1% (under reaction conditions of 290 DEG C, 6MPa, WHSV being 1<-1> and nH2:nC16 being 15. Compared with the prior art, the obtained product not only has a complete AEL structure of the SAPO-11 molecular sieve and higher crystallinity, but also has a mesoporous structure, besides, water is not used in a synthesis process of the molecular sieve, so that produced wastewater is reduced in a production process, and the yield and single-reactor yield are increased to a greater extent.

The invention discloses an integrin receptor target lipidosome drug carrier and a preparation method thereof, as well as an application of the drug carrier in preparing antitumor lipidosome drug. Hexadecyl fatty chain is conjugated with RGD peptide segment and is hydrophobic-modified so as to synthesize hexadecyl and RGD peptide conjugate with amphipathy, namely, Arg-Gly-Asp-X-NH-C16H33, and X is selected from valine, serine or phenylalanine. The invention introduces fat-soluble antitumor drug into the conjugate with amphipathy to obtain the antitumor target lipidosome drug, the lipidosome system can increase the concentration of the antitumor drug at the target and can reduce toxic and side effects of the antitumor drug to the non-target part, thereby improving the treatment index of the drug. The invention evaluates the antitumor activity of taxol lipidosome by using a Holland sarcoma S180 mouse as a model, the result shows that the taxol lipidosome has more excellent antitumor activity than each control group.

The invention discloses a phase change latent heat environment-friendly energy-saving type building material and a preparation method thereof. The phase change latent heat environment-friendly energy-saving type building material comprises 50-80 parts of cement, 30-50 parts of diatomite, 0.5-3.5 parts of acetyl tributyl citrate, 1-5 parts of an aliphatic water reducer, 10-15 parts of poly-2,6-naphthalene acid ethyl ester fiber, 2-7 parts of expanded vermiculite, 30-50 parts of triethylene glycol monomethyl ether, 8-15 parts of sebacic acid, 5-10 parts of tetradecanoic acid and 12-20 parts of n-hexadecane. The method comprises the steps that the sebacic acid, the tetradecanoic acid and the n-hexadecane are mixed and stirred at the temperature of 130-150 DEG C; the expanded vermiculite and the triethylene glycol monomethyl ether are added, the temperature is decreased to be 80-120 DEG C, and stirring continues to be performed; the cement, the diatomite, the acetyl tributyl citrate, the aliphatic water reducer and the poly-2,6-naphthalene acid ethyl ester fiber are added into the mixture after the temperature is decreased to be 50-60 DEG C, the temperature is increased to be 90-130 DEG C, and a vaccumizing reaction is performed for 20-40 min; after cooling is performed, drying and pressing in a drying oven are performed, and then the phase change latent heat environment-friendly energy-saving type building material can be obtained. The building material is high in heat conductivity coefficient, good in fixation and formation and resistant to fire, meanwhile energy consumption is saved, and the comfort is improved.

The invention discloses highly washable and friction-resistant ink for cotton fabrics. The ink is composed of the following components in parts by weight: 3-5 parts of pigments, 2.5-6.5 parts of macromolecular trisulfide carbonate compounds, 0.8-1.0 part of lauryl sodium sulfate, 0.8-1.0 part of n-hexadecane, 15-18 parts of soft monomers, 2-5 parts of hard monomers, 0.03-0.05 part of a water-soluble initiator and 65-80 parts of deionized water. Compared with the traditional non-structured or non-block structure type adhesive film, the block 'core-shell' structure coated ink designed in the invention has excellent mechanical property after film forming, and an RAFT living polymerization technology is adopted when a basic molecular chain structure of the adhesive film is designed, so that each macromolecular chain is directionally and quantitatively grafted with active groups that can carry out characteristic reactions with the cotton fabrics, binding force between the adhesive layer ofthe ink and fibers of the cotton fabrics is greatly enhanced on a molecular level, and macroscopic performances such as washable property and fastness to rubbing of the ink are improved.

The invention discloses fluorescence enhancement type encoding beads and a preparing method thereof. The outer sides of magnetic encoded carrier beads are coated with porous photonic crystal shell structures, the forbidden band of photonic crystal is made to be matched with the excitation wavelength or emission wavelength of detection fluorescence, and then fluorescence detection signals are intensified. The preparing method comprises the steps of evenly dispersing magnetic nanoparticles into a polymer solution or a prepolymer of a polymer; evenly dispersing monodisperse silica particles in one or more solutions in the prepolymer; injecting 3-10% polyvinyl alcohol solution or methyl silicone oil or n-hexadecane into a bead generation device through an injection pump; injecting the polymer solution containing the magnetic nanoparticles and the prepolymer solution containing the silicon dioxide particles into the generation device, obtaining spherical capsules at an outlet, conducting drying and curing, treating cured capsules with 2-4% HF aqueous solution, removing silicon dioxide particles from a shell, and finally obtaining magnetic content encoded polymer carrier beads with outer sides coated with pored photonic crystal shells.

The invention discloses a uvioresistant and anti-static chemical fiber yarn and a preparation method thereof. The preparation method comprises the following steps: at first, loading a plurality of silver ions on a modified metal organic framework, blending with spinning solution to obtain chemical fiber, grafting AESO outside the chemical fiber, and carrying out copolymerization on modified microspheres to obtain a chemical fiber inner layer; manufacturing modified microspheres by taking methyl methacrylate as a wall material and taking hexadecane, plant essence and beta-1,4-polyglucosamine ascore materials; and adding an ultraviolet absorbent and dopamine in absorbing film slurry, and soaking the fiber inner layer in the absorbing film slurry for 20-30 hours, and taking the fiber inner layer out. Through synergistic effect of the modified metal organic framework, the modified microspheres, the absorbing film slurry and the like, the problems about hydroscopicity, antibacterial property, fragrance retention property and washability of common chemical fiber fabric are improved to a greater degree, and higher practicality is improved.

An intermediate transfer member for electrophotography comprising a substrate and a surface layer provided on the substrate. The surface layer comprises a binder resin and a perfluoropolyether. An extraction amount of the perfluoropolyether per 10 mm³ of the surface layer, is 0.10 mg or more and 5.00 mg or less, the extraction amount of the perfluoropolyether obtained by immersing the intermediate transfer member into a solvent that can dissolve the perfluoropolyether at 25 degrees in Celsius for 24 hours. A surface of the intermediate transfer member that is not subjected to first and second treatments, has a n-hexadecane contact angle of 55 degrees or more. A surface of the intermediate transfer member that has been subjected to the first treatment, has a n-hexadecane contact angle of 40 degrees or less. A surface of the intermediate transfer member that has been subjected to the second treatment, has a n-hexadecane contact angle of 50 degrees or more.

The invention relates to an n-hexadecane hydroisomerization reaction method on a loaded crystalline state nickel phosphide catalyst, belongs to the field of heavy alkane isomerization, and particularly relates to the n-hexadecane hydroisomerization reaction method on the loaded crystalline state nickel phosphide catalyst. The invention aims at solving the problems of a precious-metal-containing catalyst used for long-carbon-chain heavy alkane isomerization in the prior art of high cost and poor sulfide poisonousness resistant performance and the problem of a precious-metal-free isomerization catalyst of low selectivity. According to the method, Ni(NO3)2 6H2O and (NH4)2HPO4 are dissolved into water; SAPO-31 molecular sieves are added; drying is performed at the temperature being 100 DEG C; then, the materials are put into a muffle furnace to be roasted; then, temperature-programmed reduction is performed in hydrogen gas atmosphere to obtain the catalyst; the catalyst is filled into a reactor; the n-hexadecane hydroisomerization reaction is performed.

The invention provides a self-repairing microencapsulated lithium ion battery electrode material and a preparation method thereof, a lithium ion battery negative electrode and a lithium ion battery. Liquid alloy particles are mixed with n-hexadecane, liquid alloy particles are used as anode active material, and urea, resorcinol, ammonium chloride and polyvinyl maleic anhydride copolymer are reacted to form resin as shell of capsule. Compared with the prior art, the capsule prepared by the invention encapsulates the liquid alloy particles, has stable chemical properties, and is carbonized at ahigh temperature in an argon atmosphere to finally obtain a carbonized liquid alloy material. The capsule structure can well contain the volume change of liquid alloy particles in the charge and discharge process, greatly improve the structural integrity of liquid alloy particles, and has the function of self-repair. Using this material as the cathode of lithium ion battery, it has the characteristics of high capacity and stable cycling performance. The method provided by the invention is simple, has high yield and good controllability.

An optical member includes a substrate and an antireflection film on the substrate. The antireflection film includes a porous layer at the surface thereof. The porous layer contains silicon oxide particles and a binder. The porous layer is provided with a fluororesin on at least part of the surface of the porous layer. The contact angle of n-hexadecane on the surface of the antireflection film is in the range of 50° to 80°.

The invention discloses a method for preparing isohexadecane by using a Pd-supported SAPO-31 molecular sieve nanocrystalline bifunctional catalyst, and relates to a method for preparing isoparaffin byadopting the bifunctional catalyst through n-alkane hydroisomerization reaction. The invention aims to solve the problems that the cost of the catalyst is increased due to high loading capacity of noble metals in the catalyst prepared in the prior art, and the selectivity of isomerization reaction is reduced due to large grain size of a micron-sized molecular sieve adopted by the existing catalyst. The method comprises the following steps: with the Pd-supported SAPO-31 molecular sieve nanocrystalline as a bifunctional catalyst, carrying out n-hexadecane hydroisomerization reaction on a fixedbed reactor to prepare isohexadecane. The method has the advantages that the loading capacity of Pd is 0.02 wt%-0.09 wt%; and the proportion of polybranched isomers in the isohexadecane reaches more than 50%. The method is mainly used for preparing isohexadecane.

The objective of the invention is to develop a microbiological method for treating gasoline type petroleum hydrocarbons, and the invention provides a pandoraea sp. strain and an application method thereof. The strain is pandoraea sp. JWJ-06, and is called pandoraea sp. JWJ-06 for short, and the accession number of the pandoraea sp. is CGMCC No.13558. The application method includes degrading organic compounds or waste water containing organic compounds by adopting the pandoraea sp.. The organic compounds are gasoline type petroleum hydrocarbons, n-hexadecane, toluene, or a mixture of two or three of the gasoline type petroleum hydrocarbons, the n-hexadecane and the toluene. The pandoraea sp. has good degradation effects on the n-hexadecane, single-ring benzene compounds and the gasoline type petroleum hydrocarbons, can rapidly and relatively-completely degrade the n-hexadecane, the single-ring benzene compounds and the gasoline type petroleum hydrocarbons, and provides a novel route for solving a problem that gasoline or other petroleum hydrocarbons pollutes the environment.

The invention discloses a composite non-woven fabric suitable for oil-water separation and a preparation method thereof. The non-woven fabric comprises: 28-50 parts of polypropylene non-woven fabric,12-26 parts of acetone, 10-25 parts of acrylic acid, 12-25 parts of benzophenone, 13-19 parts of dichloroethane, 8-19 parts of calcium chloride, 8-19 parts of sodium carbonate, 19-32 parts of calciumcarbonate, 15-28 parts of n-hexadecane, 17-27 parts of sodium periodate, 7-20 parts of ethylenediamine, and 23-39 parts of dimethylsulfoxide. According to the method, a co-radiation method is employedfor grafting of acrylic acid to the polypropylene non-woven fabric and then mineralization is carried out, in a solid-water-oil three-phase system, a mineral layer on the non-woven fabric surface plays a role of rigid and stable moisture retention layer, and a mineralized membrane shows the underwater superoleophobic and oil drop adhesion layer effects. The composite non-woven fabric suitable foroil-water separation provided by the invention has the advantages of high oil phase disruptive pressure, small transmembrane resistance, and high retention rate of large-size emulsion droplets.