129results about How to "Good response controllability" patented technology

The invention belongs to the field of aerogel material preparation technologies, and relates to a method for preparing a hydrophobic SiO2 aerogel by virtue of normal pressure drying. During the preparation, a two-step method is adopted, an organic silicon source as precursor, water as a hydrolysis agent, absolute ethyl alcohol as a solvent, acid and alkali as catalysts, and an organic silicon solution and a surface modifier. The preparation method comprises the following steps: mixing and stirring the organic silicon source, the water and the absolute ethyl alcohol in proportion, and respectively adding an acid catalyst and an alkaline catalyst by virtue of an acid and alkali two-step method to regulate pH value so as to form gel; performing solvent replacement on the aged gel, carrying out surface hydrophobic modification, replacing a hydrophilic group on the surface of the gel through a hydrophobic group, so that the gel is hydrophobic; finally, performing normal pressure drying to obtain the hydrophobic SiO2 aerogel. The method disclosed by the invention can be used for reducing the preparation cost of the aerogel; moreover, according to a hydrophobicity test, the contact angle can reach about 158 degrees, thereby showing that the hydrophobicity is good.

The invention provides a gold nanorod with high yield and great slenderness ratio and a preparation method of the gold nanorod. A small number of hexadecylamine type cation surfactant ingredients with greater head groups are added into growth solution of the traditional seed growth method, the hexadecyl trimethyl ammonium bromide double-layer structure adsorbed on the surface of a gold rod can be partially substituted in the growth process through the ingredient addition, and the greater heat groups can tightly wrap the gold nanorod, so the substance exchange between the naked side surface of the gold nanorod and the growth solution is effectively inhabited, because the top point of the gold rod has greater curvature, the influence of the wrapping effect on the growth is less, and the slender gold nanorod with great slenderness ratio is obtained. For the continuous adjustment of the resonant wavelength of plasmas at the longitudinal surface of the synthesized gold nanorod, chloroauric acid hydrated is adopted as an oxidant so that the gold nanorod is gradually shortened, and the diameter of the gold nanorod is maintained unchanged.

The invention provides a zinc aluminate nanometer powder and a preparing method thereof. The preparing method includes the steps that 1, soluble aluminum salt and zinc salt are added into a water solution, the mixture is heated to be at the temperature of 40 DEG C to 70 DEG C under stirring, a water bath is carried out for 20 min to 60 min at the constant temperature, and a mixed solution is obtained; 2, a morphology control agent is added into the mixed solution obtained in the step 1, and dissolved under stirring, wherein the concentration of the morphology control agent is 0.01 mol/L to 2 mol/L; 3, urea is added into the mixed solution obtained in the step 2, and the constant temperature of 40 DEG C to 70 DEG C is kept for 1 h to 5 h, wherein the molar ratio of the morphology control agent to the urea is 1:100-1:10; 4, the mixed solution obtained in the step 3 is transferred to a high-pressure reaction vessel, and is reacted for 2 h to 8 h at the temperature of 120 DEG C to 180 DEG C, the obtained product is washed, subjected to suction filtration, dried at the low temperature, and subjected to high-temperature roasting, and the zinc aluminate nanometer powder is obtained. The zinc aluminate nanometer powder prepared with the method is of a fluffy-sea-urchin-shaped structure, and has the high specific surface area and high fluffiness.

The invention discloses application of dodecyl chitosan in preparing a hemostasis dressing.It is proved through experiments that after being prepared into hemostasis sponge, dodecyl chitosan fast stops arterial hemorrhage and is suitable for emergency aid and treatment on arterial hemorrhage of the wounded in disaster rescue, anti-terrorist emergency and field operation.

The invention discloses a clean pulping process for preparing paper pulp by using a wet catalytic oxidation reaction and equipment for implementing the same. The clean pulping process and the equipment are characterized in that: in a wet catalytic oxidation reaction kettle at a certain temperature and under certain pressure, introduced oxygen continuously generates a great number of active groups with strong oxidation, such as hydroxyl radicals (HO) and the like, in a water body by initiation of a catalyst; and the active groups have excellent capabilities of removing lignin and decomposing chromophore and can carry out lignin removal and bleaching treatment on various raw materials which are subjected to previous pretreatment, such as cotton stalks, wheat straw and wood, to finally obtain the paper pulp. The pulping process and the equipment have the most obvious characteristics of simple process, high yield of the paper pulp, low CODCr value of generated waste water, capability of eliminating the use of a mass of chemicals such as acid, alkali, sulphur, chlorine, anthraquinone and the like and serious pollution on the environment caused by a mass of paper-making black liquor in the conventional paper pulp making industry from source and clean and efficient novel pulping process.

The invention discloses a flame-retardant bismaleimide resin and a preparation method thereof. The flame-retardant bismaleimide resin is prepared by the following steps: stirring 100 weight parts of bismaleimide, 0-80 weight parts of diallyl phenyl compounds and10-50 weight parts of a halogen-free non-phosphorus silicon-containing flame retardant under the temperature condition of 120-150DEG C to form a transparent liquid. The halogen-free non-phosphorus silicon-containing flame retardant is poly-maleimide hyperbranched silicon resin with the branching degree of 0.5-0.6 and the molecular weight of 2500-3400. The flame-retardant bismaleimide resin not only has excellent flame retardance performance, but also the mechanical performance can be greatly improved, in addition, the flame-retardant bismaleimide resin also maintains the excellent heat resistance, and can be used as a high-performance resin matrix, an adhesive, insulating paint and the like, and has wide application prospects in the fields of aerospace, electronic information, electrical insulation and the like.

The invention belongs to the technical field of mesophase asphalt precursor synthesis methods, and particularly relates to a preparing method of high-purity arene oligomerization asphalt. The preparing method mainly solves the problems that according to an existing preparing method of the high-purity arene oligomeriation asphalt, reaction conditions are rigid, corrosion for equipment is strong, the cost is high and purification is difficult. The technical scheme of the preparing method of the high-purity arene oligomerization asphalt includes that arene chemical compounds are guided into a first stage reactor, catalysts are guided into a catalyst feeding system, after uniform mixing, the catalysts are input into the first stage reactor through the feeding system, after uniform mixing and reaction for 1-50 hours, materials in the first stage reactor are guided into a second stage reactor to react, materials in the second stage reactor are conveyed to a corrosion-resistant film evaporator, the residual catalysts are eliminated, and the arene oligomerization asphalt is formed. The preparing method of the high-purity arene oligomerization asphalt has the advantages of good reaction controllability, low-temperature efficient reaction, catalyst recycling, and good asphalt performance, and the like.

The invention discloses a preparation method of polycaprolactone. The method comprises the following steps: mixing a catalyst, an organic solvent and caprolactone; carrying out ring-opening polymerization in the presence of anhydrous and anaerobic inert gases; treating a reactant to obtain polycaprolactone after reacting, wherein the catalyst is an amido anilino group lithium compound. With the amido anilino group lithium compound as a catalyst, the preparation method is good in reaction controllability, mild in condition, high in reaction rate and high in catalytic activity; polymerization reaction can be carried out without adding an alcohol-assisted catalyst; and the obtained polycaprolactone is controllable in molecular weight, high in productivity and few in metal residues. In addition, the polymerization reaction process is simple; a general solution polymerization method can be adopted; through control on polymerization reaction conditions, the molecular weight of the polymer can be regulated and controlled; and the obtained polymer is narrow in molecular weight distribution, has excellent physical and chemical characteristics, and can meet the requirements of the market.

The invention provides a method for synthesizing fluorescent silver nano-particles under microwave by polymethylacrylic acid, relating to fluorescent silver nano-particles, and provides the method for synthesizing the fluorescent silver nano-particles under microwave by polymethylacrylic acid. In the method, the polymethylacrylic acid is used as a stabilizing agent and a reducing agent to synthesize the fluorescent silver nano-particles by a microwave method; silver nitrate aqueous solution is prepared; polymer is added into the silver nitrate aqueous solution, and is stirred to prepare reaction precursor solution; the reaction precursor solution is filled in a quartz reaction flask, the quartz reaction flask is sealed and subject to a microwave heating reaction; and after the microwave heating reaction, the system is cooled to room temperature to obtain the fluorescent silver nano-particles, and the obtained product can be placed in a 4 DEG C low-temperature refrigerator to keep in dark place.

The invention relates to a phosphor-containing crown macromolecular hybrid nanometer material and a preparation method and application thereof. The phosphor-containing crown macromolecular hybrid nanometer material is characterized in that phosphonitrilic chloride trimer is used as a core to synthesize novel phosphor-containing crown macromolecules by a layered modifying method, the surface is modified with pyridine, the novel phosphor-containing crown macromolecule of which the surface contains metal ion chelating sites is obtained, and the copper ions and gold ions are directly complexed, soas to form the hybrid nanometer material for preparing anti-tumor drugs. The phosphor-containing crown macromolecular hybrid nanometer material has the advantages that the raw materials are commercialized, the molecular weight of the prepared phosphor-containing crown macromolecule is uniform, the preparation method is simple, the controllability of reaction process is high, the operation is easy, and a plurality of metal ion chelating sites is contained; the prepared hybrid nanometer material can be applied to the anti-tumor study, and the good application prospect is realized.

The invention provides a Cu-Ag bimetallic nano material, a preparation method and application thereof, and belongs to the field of nano materials. The preparation method comprises the steps of preparing a polyatomic alcohol solution of silver nitrate, a polyatomic alcohol solution of polyvinylpyrrolidone and a polyatomic alcohol solution of copper acetate; mixing the polyatomic alcohol solution of silver nitrate with the polyatomic alcohol solution of polyvinylpyrrolidone according to the fact that the volume ratio of the polyatomic alcohol solution of silver nitrate to the polyatomic alcohol solution of polyvinylpyrrolidone is 1 to (1 to 1.2), and carrying out microwave treatment to obtain an Ag nano solution; mixing an n-heptanol solution of copper acetate with the Ag nano solution according to the volume ratio of the n-heptanol solution of copper acetate to the Ag nano solution is 1 to (1 to 1.2), and carrying out microwave treatment to obtain Cu-Ag nano sol suspension; and carrying out centrifugal cleaning on the Cu-Ag nano sol suspension, and removing supernate to obtain the Cu-Ag bimetallic nano material. The preparation method of the Cu-Ag bimetallic nano material provided by the invention is simple and reliable to use and environment-friendly in technology. The invention further discloses the Cu-Ag bimetallic nano material prepared through the method and application of the Cu-Ag bimetallic nano material as an antibacterial agent.

The invention discloses a BSA (Bovine Serum Albumin)-gadolinium ion complex wrapped hollow golden nano shell and a preparation method. The preparation method comprises the following steps: (1) preparing mesoporous silica nanoparticles; (2) preparing aminated mesoporous silica nanoparticles; (3) preparing golden shell wrapped mesoporous silica nanoparticles; (4) preparing a hollow golden nano shell; (5) preparing a carboxyl modified hollow golden nano shell; (6) preparing a BSA-gadolinium ion complex; and (7) preparing the BSA-gadolinium ion complex wrapped hollow golden nano shell. The BSA-gadolinium ion complex wrapped hollow golden nano shell disclosed by the invention has a porous surface and an internal hollow structure, can be directly applied to diagnosis and treatment on cancer, canbe also used as a medicine carrier to prepare a cancer diagnosis medicine or an anti-cancer medicine, has a three-mode imaging (CT/PA/MR (Computed Tomography/Photoacoustic/Magnetic Resonance)) medicated photo-thermal treatment function, is capable of achieving visible monitoring on cancer, and is stable in property and good in dispersibility and biocompatibility.

The invention provides a preparation method for covering-type textile inkjet printing pigment ink, and belongs to the field of fine chemistry and material science. Oxides are coated on the surfaces of pigments by adopting a sol-gel technique, the pigment surfaces coated with the oxides are modified with silane coupling agents KH570, then polymers are coated on the surfaces of the pigments through miniemulsion polymerization to prepare nano-composite colorants, and finally the covering-type textile inkjet printing pigment ink is prepared by adding auxiliaries such as polyatomic alcohols, surfactants and antibacterial agents in the nano-composite colorants. The covering-type textile inkjet printing pigment ink prepared through the method is smooth in jetting, bright in color and high in covering force and achieves inkjet printing of non-white textiles.

The invention belongs to the field of printing machining and particularly relates to a method for improving ink adhesion in a plastic printing product. The method includes the following steps of (1) pretreatment of the plastic product and (2) printing. An ion sputtering method is adopted to conduct oxidation treatment on the surface of the plastic product, energy can be rapidly transferred to a special functional group on the plastic surface, and purposes of even heating and even oxidization are achieved; printing ink is prepared in the manner that based on ordinary ink, microcrystalline wax, N, N-dimethylaniline, lignin-based epoxy resin and a surface active agent are added, and consistency and permeability of the ink and the plastic product are increased. The plastic printing product prepared through the method has the advantages that adhesion between the plastic product and the ink is high, and friction resistance is achieved.

The invention is applicable to the technical field of high polymer material manufacturing, and provides a preparation method of a temperature-sensitive microgel uniformly coated with nano iron oxide.The preparation method comprises the following steps: sequentially adding monomers MEA, PEGA and AAEM into a sealable container to obtain a mixed material I; adding gamma-Fe2O3, PEGDA, PVP and deionized water into the mixed material I, stirring, sealing the container, transferring the container into an ice-water bath, blowing nitrogen and discharging oxygen for 30-60 minutes to obtain a material II; injecting a KPS solution into the material II; and continuously introducing nitrogen, and reacting for 6 hours to obtain the temperature-sensitive microgel. According to the preparation method, thepreparation method is short in reaction time, high in preparation efficiency, strong in whole reaction controllability and high in repeatability, and the prepared temperature-sensitive microgel is uniform in particle size and can be applied to the fields of drug carriers, targeted therapy or sensors and the like.

The invention discloses a dual-imaging-guided photothermal therapy multifunctional nano-hybrid and a preparation method. The preparation steps are: (1) preparing bismuth selenide nanoplate powder by solvent method: hyaluronic acid doped polypyrrole coated bismuth selenide Nanoplate: dissolve bismuth selenide nanoplate powder and polyvinylpyrrolidone with an average molecular weight of k13-18 in water, add pyrrole, stir, transfer to ice bath, add ferric chloride aqueous solution drop by drop, add hyaluronic acid Acid aqueous solution, reaction; dialyzed polymer solution, centrifuged, and dried precipitate, that is. The hybrid compound of the present invention has good physical stability, and exhibits good water solubility, biocompatibility, strong near-infrared absorption and good photothermal stability, and can be used for photothermal therapy guided by CT and PA imaging; Good in vivo targeting; simple preparation process, mild reaction conditions, strong reaction controllability, low toxicity, easy scale-up, readily available raw materials, and cheap prices.

The invention relates to a phosphorus-containing crown macromolecular hybrid nano material as well as preparation and application thereof. The structural formula of the hybrid nano-material is shown as a formula I in the specification. The raw materials are commercialized sources, the prepared phosphorus-containing crown macromolecules are uniform in molecular weight, the preparation method is simple, the controllability of the reaction process is high, and the operation is easy. The nano material prepared by the invention can be used for tumor chemotherapy and gene combined therapy research,and has a good application prospect.

The invention provides an imidazole-based anionic dye dyeable modified copolyester masterbatch, and preparation and application thereof. The imidazole-based anionic dye dyeable modified copolyester masterbatch is characterized in that a comonomer of the imidazole-based anionic dye dyeable modified copolyester masterbatch comprises terephthalic acid, glycol, N-2-(3,5-dicarboxyl phenyl) ethyl-N'-methylimidazole chlorine salt and 2-methyl-1,4-butanediol according to the molar ratio of 1:1.2-2.5:0.1-0.4:0.03-0.25. The imidazole-based anionic dye dyeable modified copolyester masterbatch prepared by the invention is blended with unmodified PET polyester to obtain a polyester product which has good anionic dye dyeability, the polyester product can be dyed at normal temperature and under normal pressure or can be subjected to boiling dyeing under normal pressure, the dye-uptake can be above 85%, dye cannot leak easily, and the imidazole-based anionic dye dyeable modified copolyester masterbatch can be applied to the field of garment, home textile, agriculture, industry and the like.

The invention provides a polyion liquid acid-base indicator suitable for non-polar solvent and a preparation method thereof. The preparation method includes the steps that ethylene glycol is added into a phthalic anhydride solution under the protection of nitrogen to be stirred; epoxy chloropropane is dropwisely added to the obtained solution for carrying out a stirring reaction; N-methylimidazole is dropwisely added for carrying out a stirring reaction; the obtained mixture is added into acetone to be stirred and settled; obtained sediment is dissolved in deionized water to be dropwisely added to a mixed aqueous solution of methyl orange and methyl blue for carrying out a stirring reaction to be settled; the obtained sediment is repeatedly washed and dried to be added into dichloromethane for stirring, so that a mixture is formed; the obtained mixture is filtered, so that filter liquor is obtained; the obtained filter liquor is subjected to rotary evaporation, the dichloromethane solvent is removed, and vacuum drying is conducted. Considering that the polyion liquid acid-base indicator has good solubility and obvious acid-base indicating behaviors in the non-polar solvent, the polymer can be used in the acid-base indicating field of the non-polar solvent.