77results about How to "Preparation conditions are easy to meet" patented technology

The invention relates to a water-soluble fullerene and an application thereof; and problems that the traditional tumor therapeutic drug has a large side effect and cannot very well suppress tumor cell proliferation can be effectively solved; and a technical scheme for solving the problems is as follows: on the basis that the original fullerene is purified, the purified fullerene reacts with an ammoniation reagent; and after an amino with stronger reaction activity is connected to the surface of the fullerene, the fullerene reacts with a hyaluronic acid, so as to generate fullerene-hyaluronic acid polymer, wherein the mass ratio of the hyaluronic acid and the fullerene is 0.18-0.25:1; and the water-soluble fullerene provided by the invention has the advantages of good physical and chemical stability, easiness for satisfying preparation conditions, rich raw material sources, low cost and small side effect and is an innovation on a tumor therapeutic drug carrier.

A process for preparing the crystal whiskers of potassium hexatitanate from titanium compound and potassium compound includes such steps as preparing spherical precursor from the crystal Ti compound and the K compound, sintering, hydrolyzing with deionized water, filtering, washing, and drying. Its advantages are high quality of crystal whisker, low cost and less discharged sewage.

The invention discloses a method for preparing hydroxylapatite/fibroin protein composite porous support material, comprising the following steps: dropping fibroin protein solution in hydroxylapatite homogenate; putting the mixed solution in a supersonic cleaner for oscillation treatment; dropping glutaric dialdehyde cross linking agent to the mixed solution and stirring the mixture; and then transferring the solution to a cell culture plate and putting the solution into a refrigerator for precooling at minus 20 degrees; cooling the solution for 12h, refreezing the solution for 24h after temperature returning treatment at the temperature of 25 DEG C; then drying the solution again to prepare the hydroxylapatite/fibroin protein composite porous support material of different proportions. The hydroxylapatite/fibroin protein composite multiaperture support material of the invention features simple preparation technique, short time, easily satisfied preparation conditions, no addition of pore-foaming agent, small use amount of reagent, low price and low cost thereof; in addition, the support material prepared in the invention features relatively high porosity factor, uniform dispersion of pores and mutual perforation of pores, thus meeting demands of bone tissue engineering support material on pore space and pore diameter structure.

The invention discloses a preparation method of a high performance iodine vacancy bismuth oxygen-iodine (BiO1.18I0.64) photocatalytic material. The preparation method is characterized in that bismuthnitrate and potassium iodide are used as raw materials, ethylene glycol is used as a solvent, and a novel photocatalytic material iodine vacancy bismuth oxygen-iodine (BiO1.18I0.64) is obtained by combining a solvothermal method with a calcination method. The preparation process is simple and operation conditions are loose; and the synthesized iodine vacancy bismuth oxygen-iodine (BiO1.18I0.64) has excellent photocatalytic performance and higher degradation activity for toxic organic matters in water.

The invention discloses a synthetic method of titanium dioxide self-assembled particles. According to the synthetic method, water is taken as a solvent, TiCl4 or an organic alkanol titanium oxide is taken as a titanium oxide precursor, an alkylammonium hydroxide is added as a protective agent, and cauliflower-shaped and rod-shaped titanium dioxide nanoparticles are synthesized via hydrothermal method. The synthetic method is simple; synthetic conditions are not strict; operation is simple; the prepared titanium dioxide nanoparticles possess cauliflower-shaped or rod-shaped appearance, and a structure which is formed via self-assembly of titanium dioxide nanowires along an axial direction. The synthesized titanium dioxide possesses relatively high photocatalytic activity.

The invention discloses a high-entropy alloy with a banded precipitated phase. The high-entropy alloy consists of Co, Cr, Ni and Mo elements, wherein the atomic percent of Co is 25-35%, the atomic percent of Cr is 25-35%, the atomic percent of Ni is 25-35%, the atomic percent of Mo is 5-15%, and the sum of atomic percents of the components is 100%. The phase composition of the high-entropy alloy with the banded precipitated phase comprises a face-centered cubic phase and a sigma precipitated phase, wherein the sigma precipitated phase accounts for 40-60%. In the preparation method, the non-uniform precipitation of the Mo-rich phase is achieved through the combination of hot processing, solid solution processing, cold processing and annealing process, and the high-entropy alloy with the banded precipitated phase is obtained. The alloy can ensure excellent strength and toughness matching, and has application prospects in the fields of cutter materials, aerospace materials and the like.

The invention discloses a super-hydrophobic nano-silver raman-enhanced substrate material and a preparation method thereof. The preparation method comprises the following steps: performing surface de-oiling and acid washing on a base material in sequence; performing chemical deposition in chemical silver-plating deposition liquid at 20-80 DEG C for 2-30 minutes; and storing a nano-silver substrate obtained by the deposition for 1-2 months to obtain the super-hydrophobic nano-silver raman-enhanced substrate material. The method is a one-step chemical deposition process and is simple and feasible, and the super-hydrophobic surface with high contact angle hysteresis can be obtained without any surface modification; the prepared substrate has an ultrasensitive raman-enhanced effect, rhodamine 6G is taken as a probe molecule, and the detection limit is reduced to 10-12mol/L; meanwhile, the substrate is very good in surface structure stability and excellent in performances of acid resistance, alkaline resistance, organic solvent resistance, low temperature resistance, high temperature resistance and the like, and can meet the actual application needs.

The invention discloses a fullerene amino-acid-ester self-assembled medicine-carrying slow-release vesicle material, and a preparation method and application thereof, and relates to the field of fullerene. The vesicle material is prepared by enabling fullerene molecule to be connected with an amino-acid ester molecule through nucleophilic substitution, wherein fullerene is C60 fullerene and the molecular general formula is C60R5Cl. The preparation method comprises taking C60 fullerene and ICl as raw materials, taking chlorobenzene as a solvent, and synthesizing C60Cl6; adding an amino acid into a hydrochloric acid methanol saturated solution, and performing heating reflux to obtain the amino-acid ester; performing heating reflux on C60Cl6 and the amino-acid ester in a mixed solvent of ethyl acetate and toluene, so as to obtain the fullerene amino-acid-ester cruder product; and performing chromatographic separation, so as to obtain the fullerene amino-acid-ester self-assembled medicine-carrying slow-release vesicle material.

The invention relates to an ionic conductor elastomer and preparation and application thereof. The ionic conductor elastomer is prepared by taking a high molecular monomer, a water-soluble polymer andan ionic liquid as raw materials, carrying out one-step water phase free radical polymerization under the action of an initiator, and processing. The ionic conductor elastomer prepared by the invention has high strength, self-repair, ultra-long stretching and other high performance, and is easy to be processed into various shapes. The ionic conductor elastomer has simple steps and easy operation,is convenient to realize large-scale production and preparation, and is expected to be used in the fields of Internet of Things sensing equipment, medical bionic electronic instruments, intelligent robots and the like.

The invention relates to a preparation method of conductive carbon paste with water solubility and PTC function. The method comprises the following steps of: first step: carrying out preparation of the carbon paste; adding 40 percent to 60 percent of deionized water into 24 percent to 40 percent of bicomponent polyurethane, uniformly mixing, adding 10 percent to 20 percent of carbon powder, adding dispersing agent and uniformly stirring; second step: carrying out preparation of PTC functional material; taking 30 percent to 50 percent of deionized water, adding 2 percent to 4 percent of matrix wetting agent 500, 10 percent to 20 percent of ethylene glycol monomethyl ether and 3 percent to 5 percent of emulsifying agent; adding tween and uniformly mixing; then adding stearic acid, monoglyceride and glycerin, heating to 80 DEG C, uniformly stirring, homogenizing, emulsifying, reducing temperature to 35 DEG C, and filtering for spare; and third step: carrying out the preparation of conductive carbon paste with water solubility and PTC function, taking 100 parts by weight of conductive carbon paste and 30 to 60 parts by weight of PTC functional material, and mixing and stirring; and taking 0 percent to 4 percent of defoaming agent which is put into conductive carbon paste with PTC function in stirring and uniformly stirring. The method has simple operation, loose preparation conditions, wide material obtaining, no toxicity and no pollution; and the product thereof has excellent conductivity, safeness, reliability and wide application.

The invention discloses a preparation method for an Au-ZnIn2S4 nanoarray electrode photocatalytic nitrogen fixation material, belonging to the field of preparation and modification methods for photoelectrochemical catalytic materials. The preparation method comprises the following steps: based on a ZnIn2S4 nanoarray electrode, performing photodeposition of Au nanoparticles on the surface of the ZnIn2S4 nanoarray electrode so as to improve the photocatalytic nitrogen fixation performance of ZnIn2S4; growing a layer of a ZnIn2S4 nanosheet array on FTO conductive glass by adopting a hydrothermalmethod, and depositing Au particles on the surface of the ZnIn2S4 nanosheet array by adopting a photodeposition method so as to prepare an Au-ZnIn2S4 electrode; fixedly putting the Au-ZnIn2S4 electrode slice in an aqueous methanol solution, continuously introducing high-purity nitrogen, converting N2 into NH3 under the illumination of a xenon lamp, and then converting NH3 into NH4<+>; and mixing areaction solution with a Nessler's reagent for color development, and determining the concentration of NH4<+> in the reaction solution so as to further determine the photocatalytic nitrogen fixationperformance of the material. The method has the advantages of simple preparation, loose preparation conditions, no toxicity, and easy recovery and cyclic utilization of the material in the process ofapplication; since ZnIn2S4 is narrow in forbidden band width and can absorb visible light in a larger range, and Au also has strong absorption performance in a visible light range, the material is increased in the comprehensive utilization rate of visible light.

The invention provides graphene cladded silylene as well as a preparation method and an application method thereof. The preparation method comprises the following steps: placing a metal catalysis substrate in a reaction cavity; removing a natural oxidization layer on the metal catalysis substrate and exposing a metal layer; selecting a gas-state hydrocarbon type carbon source as a precursor and forming graphene on the metal layer through a chemical vapor deposition method; closing the gas-state hydrocarbon type carbon source of the reaction cavity and introducing a silicon-containing gas source and reductive gas, so as to form silylene on a surface layer of the graphene through evaporated silicon atoms via epitaxial growth; only closing the silicon-containing gas source or closing the silicon-containing gas source and reductive gas at the same time; introducing the gas-state hydrocarbon type carbon source to clad carbon atoms on the surface of the graphene, so as to obtain the graphenecladded silylene. The silylene obtained by the preparation method can keep an original structure in the air for two or more than two years; the method breaks through a traditional method, and preparation conditions are relatively loose and simple.

The invention relates to a nano diamond derivative with an end group as an amino group as well as a preparation method and an application thereof, and belongs to the field of nanometer materials. The derivative is prepared according to the following steps: firstly, reacting nano diamond subjected to purification and mixed acid oxidization treatments with thionyl chloride; then respectively carrying out nucleophilic substitution reaction on the product obtained from the former step and a diamine compound and trichloro-triazine; and then, utilizing the substituted nano-diamond to carrying out iteration reaction on the product obtained from the former step and the diamine compound and the trichloro-triazine, thus obtaining the derivative, wherein the amino content is about 0.01%-0.1%. The nano diamond derivative with the end group as the amino group has good dissolubility in an organic solvent, so that the nano diamond is stably dispersed; the preparation conditions of the derivative are easy to satisfy, and raw materials are available; the method for preparing the nano diamond derivative with the end group as the amino group through step-by-step iteration reaction is developed; and the derivative has high scientific and technological content, strong innovativeness and a good application prospect.

The present invention provides a droxyethylcellulose-carbon nanotube derivative, prepared by original carbon nanotube reacting with an halogenating agent after being ball grinded, purified on the base of acidizing, carboxylic acid group of the carbon nanotube surface reacting with a binary functional group organic compound to make the lively functional group extend from the surface of the carbon nanotube after being converted to acyl halide group having strong reactive activity, then reacting with trichloro triazine, obtaining a lively carbon nanotube containing trichloro triazine on the surface which can react with hydroxide radical, finally reacting with the droxyethylcellulose via nucleophilic substitution. The mass content ratio of droxyethylcellulose and carbon nanotube is 0.2-1.6:1. The invention also relates to a preparing method of the derivative. The derivative has a friendly environment, has better solubility in organic solvent such as N-pyrrolidoneextraction, dimethylsulfoxide, N, N'-dimethylformamide and N, N'-dimethyl acetamide. The preparing condition of the derivative is easy to meet, and has an ample source of feed, lower cost.

The invention discloses regenerated aggregate concrete and a preparation method thereof. The regenerated aggregate concrete is prepared from the following raw materials in percentage by weight: 15 to 20% of cement, 5 to 15% of water, 0.5 to 40% of natural coarse aggregate, 30 to 70% of waste concrete regenerated coarse aggregate, 0.03 to 0.05% of methacrylic acid, 0.02 to 0.08% of neopentyl glycol, 0.5 to 1% of composite toughening material, 5 to 10% of fly ash, 0.5 to 1% of polyacrylate, 0.01% to 0.03% of early strength agent, and 0.01 to 0.03% of water reducer. The prepared regenerated aggregate concrete has the advantages that the toughness, anti-fatigue property and isotropy are good, the synergistic toughening effect of the materials is favorably performed, and the strength can reach 60 to 80MPa; the regenerated aggregate concrete is suitable for preparing bearing structures, and can fill the blank in existing study in China.

The invention belongs to the field of microfabrication, and particularly relates to a phenethyl resorcinol microneedle patch. The patch comprises needles and a microneedle substrate, wherein the needles are uniformly distributed on the microneedle substrate, and the needles comprise phenethyl resorcinol with a content of 0.05-1.0% by weight percentage and sodium hyaluronate with a content of 10-50% by weight percentage. The invention also provides a preparation method of the phenethyl resorcinol microneedle patch. The phenethyl resorcinol microneedle patch provided by the invention adopts thephenethyl resorcinol, and the phenethyl resorcinol can be directly injected into the muscle bottom through a microneedle technology, so that the absorption efficiency of the skin on the phenethyl resorcinol is increased, and the whitening and freckle removing effects are doubled. In addition, the preparation method provided by the invention has the advantages that: the requirements of preparationconditions are easy to meet, and the production scale is easy to realize.

The invention belongs to the technical field of a tobacco flavor, and particularly relates to a preparation method and application of a colorless caramel flavor. The preparation method of the colorless caramel fragrance comprises the steps of preparing caramel flavor liquid by a microwave method; then, adding ethanol; performing distillation at reduced pressure; and collecting the colorless caramel flavor. The colorless caramel flavor can be applied to filter rod tows, flavor threads or cut tobacco; the appearance beauty is ensured, and meanwhile, the caramel-like characteristic fragrance is given to smoke; the smoke irritation is reduced, the aftertaste in the oral cavity is improved; and the sweet and moist feeling in the oral cavity is improved. The preparation method and application ofthe colorless caramel flavor have the advantages that the operation is simple; manufacturing conditions can be easily met; the stability high; economical and applicability are realized; and the method is suitable for being used and popularized.

The invention discloses a green and recyclable cellulose solvent and a preparation method thereof, and a method for realizing cellulose regeneration. The cellulose solvent is a mixed hydrated fused salt of calcium chloride hexahydrate and anhydrous lithium chloride, the content of the calcium chloride hexahydrate is 65.0%-90.0%, and the content of the anhydrous lithium chloride is 10.0%-35.0%. The cellulose solvent is prepared from calcium chloride hexahydrate and anhydrous lithium chloride, and the method is wide in raw material source, low in cost, free of toxic and harmful substances and environmentally friendly. The solvent system can be used for dissolving natural cellulose with the molecular weight as high as 8.0 * 10 < 5 > to obtain a cellulose solution with high solubility. A cellulose solution obtained by using the solvent is solidified and regenerated by a 5.0-10.0% ethanol water solution to prepare a cellulose membrane and gel.

The invention discloses high-tenacity cement mortar and a preparation method thereof. The high-tenacity cement mortar is characterized in that on the basis of taking cement, fine sand, polyacrylic ester and gypsum as raw materials of cement mortar, hydroxyethyl cellulose is utilized to modify halloysite subjected to activating treatment, so that the modified halloysite can not only be fully dispersed in cement mortar but also endow the cement mortar with favorable tenacity, isotropy and fatigue resistance, and accordingly, the high-performance cement mortar is prepared.

The invention provides a nanodiamond derivative having hydroxy groups as terminal groups, and a preparation method and a use thereof, and belongs to the nanomaterial field. The preparation method comprises the following steps: 1, reacting nanodiamond subjected to purification and mixed acid oxidation treatment with thionyl chloride; 2, respectively carrying out a nucleophilic substitution reaction of a substance obtained in step 1 by a diamine compound and trichlorotriazine; 3, respectively carrying out the nucleophilic substitution reaction of a substance obtained in step 2 by a dibasic alcohol compound and trichlorotriazine; and 4, carrying out an iteration reaction of a substance obtained in step 3, the dibasic alcohol compound and trichlorotriazine to obtain the nanodiamond derivative having hydroxy groups as terminal groups, wherein the content of the hydroxy content in the nanodiamond derivative having hydroxy groups as terminal groups is about 0.001-0.01%. The nanodiamond derivative having hydroxy groups as terminal groups has good dissolvability in a water and parts of polar organic solvents, so the stable dispersion of nanodiamond is realized; the preparation conditions of the derivative can be easily satisfied, and the above raw materials are easy to obtain; and the derivative has the advantages of stable structure, good dispersity and stability in water and parts of polar organic solvents, high technological content, strong innovation and good application prospect.