262results about How to "The preparation process is easy to control" patented technology

The invention discloses low-cost green cellulose aerogel and a preparation method for hybrid aerogel thereof. The preparation method for the hybrid aerogel of the cellulose aerogel comprises the following steps that cellulose is dissolved into a zinc chloride aqueous solution, centrifugal deaeration is performed, and a uniform and transparent cellulose solution is obtained; the cellulose solution is formed, then the formed cellulose solution is placed into a coagulating bath to be regenerated, in addition, the regenerated cellulose solution is fully washed by use of a solvent, and cellulose solvent gel is obtained; the solvent in the cellulose solvent gel is removed by use of supercritical carbon dioxide drying or freeze drying, and the cellulose aerogel is obtained. Functional filler can be added into the cellulose solution to obtain the hybrid aerogel. By the adoption of different solution forming methods, the cellulose aerogel and the hybrid aerogel thereof in the shapes of sheets, fibers, particles and the like can be prepared. The preparation method is low in cost and is environmentally friendly, and the prepared aerogel is provided with a uniform nano-grade net porous structure.

The invention discloses a preparation method of a lithium-ion battery with a conductive polymer coated positive electrode. The positive electrode sheet is a positive electrode slurry made of a positive electrode material, a conductive agent, a positive electrode binder, a conductive polymer or a conductive polymer monomer, and a solvent. The negative electrode sheet is composed of negative electrode material, thickener, negative electrode binder, and solvent mixed into negative electrode slurry and negative electrode current collector. The specific capacity of the battery is increased by 10-20% by adding a conductive polymer or a conductive polymer monomer to the slurry for coating. The invention effectively improves the performance of the prepared positive electrode material, and because the method is simple, the product cost is reduced, the process is simplified, and the method is suitable for large-scale production.

The invention relates to nanostructured lipid carrier loaded with phenylethyl resorcinol. The carrier is loaded with the active component phenylethyl resorcinol (SymWhite 377) and is characterized in that the nanostructured lipid carrier comprises the following compositions in percent by weight: 0.5%-2% of phenylethyl resorcinol, 2%-5% of a nemulsifier, 5%-10% of a composite lipid material and 83%-92.5% of deionized water. The invention also relates to a preparation method of the nanostructured lipid carrier. The invention also relates to a skin-care product or a cosmetic containing the nanostructured lipid carrier. The nonostructured lipid carrier has excellent stability and water solubility, the preparation method is simple and controllable and good in repeatability, and is applicable to preparation of cosmetic containing phenylethyl resorcinol.

The invention discloses a resveratrol nanostructured lipid carrier. The resveratrol nanostructured lipid carrier is loaded with active pharmaceutical ingredients of resveratrol and is characterized by comprising 0.1 to 1wt% of resveratrol, 2 to 20wt% of at least one emulsifier, 2 to 30wt% of a composite lipid material and the balance water, wherein the composite lipid material is a mixture of at least one solid lipid material and at least one liquid lipid material. The at least one solid lipid material and the at least one liquid lipid material are selected from glyceryl triacetate, acetylated monoglyceride, diethyl sebacate, diisopropyl adipate, diisopropyl sebacate, glycerol monolaurate, peach resin and an octadecyl alcohol. The resveratrol nanostructured lipid carrier has good stability and water-solubility. The preparation method of the resveratrol nanostructured lipid carrier is simple and controllable and has good repeatability. The resveratrol nanostructured lipid carrier can be utilized in preparation of resveratrol-containing cosmetics.

The invention discloses a power polymer lithium ion battery and a fabricating process thereof. A positive plate comprises modified lithium iron phosphate, conductive agent, positive adhering agent, dispersant and positive current collector. A negative plate comprises graphite, conductive agent, negative adhering agent and negative current collector. The fabricating process comprises the following steps: firstly, dispersing the conductive agent; secondly, dispersing the modified lithium iron phosphate; thirdly, adding the efficient organic adhering agent so as to increase the adhering property among grains of the conductive agent, between the conductive agent and the positive material, and between the conductive agent and the positive material and the current collector, and to increase the electrode contact conductivity and electron conductivity, thereby greatly improving the battery high-rate charge and discharge property. The invention has the advantages of simple process, easy control, good product safety and long circulation service life.

The invention provides a rotary writing method of a multi-core fiber grating, which comprises the following steps of stripping one section of coating on a multi-core fiber; fixing the multi-core fiber on a fiber fixture after cleaning treatment; arranging the fiber fixture on a rotary optical device; tightly attaching the multi-core fiber to a mask; regulating the rotary optical device so that one fiber core aligns with a writing optical source; starting an excimer laser, and conducting exposure after the optical source becomes parallel light through collimating and beam expanding; connecting one end of the multi-core fiber to a broadband optical source, and connecting the other end to a spectrograph; monitoring grating formation through the spectrograph, and stopping exposure after achieving the required reflectivity; regulating the rotary optical device to a proper angle so that the next fiber core of the multi-core fiber rightly aligns with the writing source for writing fiber by fiber; and packaging. The invention has the advantages of simple implementation and easy control, and can improve the writing quality of the grating; a plurality of manufactured multi-core fiber gratings are integrated in one fiber, which improves the integration of optical devices in the fiber and can be used for simultaneously measuring a plurality of physical quantities and multi-dimension information.

The invention provides a skin moisturizer containing ginkgo enzyme, as well as a preparation method and application of the skin moisturizer. The skin moisturizer comprises the ginkgo enzyme and skin matrix. The preparation method comprises the following steps: inoculating raw materials of ginkgo kernels, fruits and vegetables, Chinese herbal medicine accessories and the like with compound strains, stirring the mixture evenly, sealing the mixture, fermenting the mixture away from light, stewing, filtering and removing fermentation residue to obtain the ginkgo enzyme, and adding the skin matrix to the ginkgo enzyme so as to obtain the skin moisturizer containing the ginkgo enzyme. The skin moisturizer containing the ginkgo enzyme does not contain any preservative component; therefore, the skin moisturizer which does not irritate skin can protect dermis cells, improve blood circulation, and prevent the cells from oxidation to wrinkle; at the same time, the skin moisturizer can hinder pigments from formation and pigmentation in dermis, and play the role of whitening the skin and preventing and treating hyperpigmented macule. The invention further discloses the application of the skin moisturizer to beauty masks.

The invention discloses a catalyst for preparing aromatic hydrocarbons through directed conversion of CO2, and relates to the technical field of catalytic hydrogenation. Metal oxide is adopted as a core, and a a molecular sieve is adopted as a shell so as to obtain the core-shell structure catalyst, wherein the metal ion center of the metal organic compound is one or more of Zn<2+>, Zr<2+>, Fe<3+>, Co<2+>, Ni<2+>, Cu<2+>, Cr<3+> and Mn<2+>, and the molecular sieve is one or more of ZSM-5, MCM-41, SAPO, MCM-22, USY and SBA-15. The catalyst for preparing aromatic hydrocarbons through directed conversion of CO2 has the characteristics of a uniform structure, uniform properties and precise regulation, the preparation process has simple procedures and high repeatability, and the prepared catalyst has the advantages of high conversion rate of CO2, high selectivity to aromatic hydrocarbons, a long service life, a wide application range and the like; and the prepared catalyst can be directly applied to preparation of aromatic hydrocarbons through directed conversion of CO2, and has an industrial value.

The invention relates to a method for preparing large-particle cerium oxide, belonging to a preparation process for material. The method for preparing large-particle cerium oxide disclosed by the invention comprises the following steps of: preparing cerium oxycarbonate by using cerium chloride solution as a raw material and using ammonium bicarbonate as a precipitant, and then washing, filtering, centrifugally spin-drying and burning the cerium oxycarbonate precipitate, so as to obtain a cerium oxide product having a medium particle size of 35 to 45 microns. In the method for preparing large-particle cerium oxide disclosed by the invention, the precipitation temperature and concentration of the cerium oxycarbonate are the key, and cerium carbonate instead of cerium oxycarbonate is obtained when the precipitation temperature is lower than 85 DEG C; moreover, the preparation process is easy to control, and a large-particle cerium oxide product having a medium particle size of 35 to 45 microns is produced by the traditional cerium carbonate precipitation procedure of factory; and the large-particle cerium oxide product is uniform in particle distribution, good in dispersibility and spherical in shape.

The invention relates to acne-removing, oil control and skin beautifying cream and belongs to the technical field of cosmetics. The acne-removing, oil control and skin beautifying cream is prepared from, by weight, nano pearl powder 3-8%, bletilla extract 0.5-0.8%, rose essential oil 0.5-1%, rose bud extract 3-8%, coix seed extract 0.6-1.2%, cactus extract 1.3-1.5%, tea tree oil 0.01-0.03%, rice oil 0.5-1.0%, cactus extract 0.5-1.0%, grape seed extract 1-2%, skin repair liquid 25-40% and the balance water. The acne-removing, oil control and skin beautifying cream is prepared by compounding a variety of natural plant extracts and the skin repair liquid, can produce a remarkable acne-removing effect, can achieve swelling subsidence and promote skin inflammation subsidence, improve, fade and remove acne marks and meanwhile plays the effects of whitening skin and prevention and control of pigment plaques.

The invention provides a preparation method for tetragonal phase nano barium titanate. The preparation method comprises the steps as follows: i), preparing water solutions of barium chloride and oxalic acid respectively, and mixing alcoholic solution of butyl titanate and oxalic acid solution uniformly to obtain titanium oxyoxalate complex ion solution; ii), adding titanium oxyoxalate complex ion solution obtained in the step i) into a supergravity reactor as a circulating flowing phase to control the supergravity level; and meanwhile, dropping barium chloride solution to obtain white barium titanyl oxalate precipitation suspension as a precursor of barium titanate, and keeping the pH value of the whole system at 2.5-3.5 during reaction; and iii),ageing the precipitation suspension obtained in the step ii), leaching, washing and drying to obtain white barium titanyl oxalate power. The preparation method provided by the invention has the advantages that tetragonal phase nano barium titanate can be prepared; and the particle size of the prepared power can be controlled to be within the range of 30-90 nm; the average particle size is small, and the particle size is narrow in distribution; and the degree of crystallinity is high, and the crystal formation is intact.

The invention relates to an iridium oxide electrode and the method for preparing the same, belonging to the field of electrochemical technique. Said electrode is especially suitable for nerve electrographic recording and nerve electric stimulation and pH sensor. There is one insulating layer in the iridium oxide electrode, at least one electrode core is packed inside; at least one end of said electrode core is on the electric conductor, the outer surface of metallic iridium or non-iridium is deposited, and the electric conductor surface is regenerative iridium oxide. One end is connected with wire and the iridium oxide surface is out of insulating layer. The process of electrochemical activation to generate iridium oxide surface comprises following steps: a. pre-treating electrode; b. putting electrode into activating solution for treatment; c. depolarizing activation electrode through reference electrode and auxiliary electrode. The iridium oxide electrode is characterized by safety, reliability, high sensitivity, practical, wide application, fast, controllable and high efficient production method.

The invention provides a bullet-shaped non-spherical micro-particle and microcapsule. A matrix of the micro-particle and micro-capsule is a polymerized photopolymerizable macromolecule, and the micro-particle and microcapsule is of an integrated bullet shape and consists of a similarly cone-shaped head portion and a cylindrical tail portion which are smoothly connected with each other; the microcapsule has at least one mutually independent chamber; and an oil phase solution is contained in the chamber. The invention further provides a method for continuously preparing the above bullet-shaped non-spherical micro-particle and microcapsule by using a microfluidic technique. The technical scheme provided by the invention can improve the flow characteristics and the movement rate of the microparticle and microcapsule in a channel, and improve the embedding effect of the microparticle and microcapsule. The microcapsule provided by the invention can realize entrapment and transport of activeingredients such as a drug.

The invention relates to a method for preparing large-grain spherical praseodymium neodymium oxide, belonging to a preparation technology of material. The method comprises the following steps of: taking praseodymium neodymium chloride solution as raw material, taking ammonium bicarbonate as precipitator, preparing basic praseodymium neodymium carbonate, and washing, filtering, centrifugally dripping and firing basic praseodymium neodymium carbonate precipitate, to obtain the spherical praseodymium neodymium oxide product with the centre grain diameter being from 25 to 30 mu m. The precipitation temperature and concentration of the basic praseodymium neodymium carbonate in the method are key factors, the precipitation temperature is less than 85 DEG C to obtain the praseodymium neodymium carbonate rather than the basic praseodymium neodymium carbonate, the preparation technology is easy to control, the large-grain praseodymium neodymium oxide product with the centre grain diameter being from 25 to 30 mu m is produced by a factory conventional praseodymium neodymium carbonate preparation working procedure, and the praseodymium neodymium oxide is even in grain distribution, good in dispersity and spherical in appearance.